WO2020249022A1

WO2020249022A1 - Self-locking device for anti-falling rail

Info

Publication number: WO2020249022A1
Application number: PCT/CN2020/095432
Authority: WO
Inventors: 吴建宁
Original assignee: 北京国网富达科技发展有限责任公司
Priority date: 2019-06-12
Filing date: 2020-06-10
Publication date: 2020-12-17
Also published as: ZA202104957B; CN110215627A; SG11202107569TA

Abstract

A self-locking device for an anti-falling rail, comprising a housing (1), a spring (2), a rotary rod (3) and a first connection shaft (4); the housing (1) comprises a fixed-side main body (11) and an open-side main body (12), the fixed-side main body (11) being detachably connected to the open-side main body (12), and two ends of the first connection shaft (4) are connected to the fixed-side main body (11) and the open-side main body (12) respectively; one end of the rotary rod (3) is located inside the housing (1), and the other end of the rotary rod (3) is located outside the housing (1); the spring (2) may make the rotary rod (3) rotate about the first connection shaft (4), and allows one end of the rotary rod (3) to abut against the front surface (21) of a wing board of an anti-falling rail (20). The present self-locking device is adapted to the size of a guide rail thereof, thereby solving the problem that existing self-locking devices are liable to jam and have unsmooth operations.

Description

Self-locking device for anti-falling track

Technical field

The invention relates to the field of power transmission auxiliary equipment, in particular to a self-locking device for an anti-falling track.

Background technique

In recent years, with the continuous deepening and improvement of power grid construction and the continuous improvement of transmission voltage levels, the construction mileage of overhead transmission lines has increased and the maintenance of lines has become more and more onerous. Since the operational safety of transmission lines is extremely important to the development of society, the regular maintenance of transmission towers is a powerful guarantee for the normal and stable operation of transmission lines. The anti-falling device is a safety device used for the safety protection measures of the personnel in the process of climbing, moving and working at the height of the pole and tower, especially when the operator falls.

The existing anti-falling devices for poles and towers usually mainly include an anti-falling track and a self-locking device, wherein the self-locking device is used in conjunction with a rigid anti-falling track. At present, the cross-sectional form of the rigid anti-fall rail installed on the pole tower is mainly "T" type (as shown in Figure 1). Due to processing and installation problems, the on-site anti-fall device is prone to jamming during use. Affect the use effect of the anti-falling device. At the same time, the existing self-locking device has complicated structure, cumbersome processing, and inconvenient disassembly of the self-locking device: it cannot be disassembled from the middle part of the guide rail, but can only be disassembled from the end of the guide rail.

Summary of the invention

In order to solve the problem of inconvenient disassembly of the existing anti-falling self-locking device, the present invention provides a self-locking device for an anti-falling rail. The self-locking device for an anti-falling rail is compatible with the size of the anti-falling rail and is compatible with the surface of the anti-falling rail. The contact guide structure adopts rolling friction to reduce the friction between the self-locking device and the anti-falling track, and improve the passage of the self-locking device on the anti-falling track; the self-locking device structure adopts an open structure, which can be removed from the anti-falling track. The middle part of the non-end part is opened. When the self-locking device is stuck on the anti-falling track, it is convenient to remove the self-locking device from the anti-falling track and go over the place where the stuck-up anti-falling track occurs. installation.

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

The invention provides a self-locking device for an anti-falling rail, which comprises a casing, a spring, a rotating rod and a first connecting shaft. The casing contains a through groove for inserting the anti-falling rail, and the casing includes a fixed side main body and an open side The main body, the fixed side main body and the open side main body are detachably connected, the two ends of the first connecting shaft are respectively connected with the fixed side main body and the open side main body, one end of the rotating rod is located in the shell, and the other end of the rotating rod is located outside the shell. The rotating rod is rotated about the first connecting shaft, and one end of the rotating rod abuts against the front surface of the wing plate of the anti-fall rail.

Preferably, the fixed side body includes a first fixed plate and a second fixed plate connected in sequence, the first fixed plate is parallel to the open side body, and the second fixed plate is located between the first fixed plate and the open side body.

Preferably, the second fixing plate is provided with a spring mounting step hole, one end of the spring mounting step hole is fixed with a spring stopper, one end of the spring is connected with the spring stopper, and the other end of the spring is connected with the rotating rod.

Preferably, the first connecting shaft includes an arcuate section, a large-diameter section and a small-diameter section connected in sequence, the outer diameter of the arcuate section is larger than the outer diameter of the large-diameter section, and the outer diameter of the large-diameter section is larger than that of the small-diameter section.

Preferably, the arcuate section and the large diameter section of the first connecting shaft are in interference fit with the first fixing plate, and the small diameter section of the first connecting shaft passes through the rotating rod.

Preferably, the opening-side main body is connected with a limiting screw, and the end of the small-diameter section is inserted into the opening-side main body, and the limiting screw can prevent the fixed-side main body from being separated from the opening-side main body.

Preferably, the end of the small-diameter section is provided with a limiting groove, and when the end of the limiting screw is inserted into the limiting groove of the first connecting shaft, the fixed side body and the opening side body are in a connected and fixed state; When the tail end is separated from the limiting groove of the first connecting shaft, the fixed side body and the opening side body can be separated.

Preferably, the self-locking device for the anti-fall rail further includes a second connecting shaft, the second connecting shaft is parallel to the first connecting shaft, the second connecting shaft and the first connecting shaft are mirror images of each other, and both ends of the second connecting shaft are respectively Connect with the fixed side body and the open side body.

Preferably, the self-locking device for the anti-fall rail further includes an inner guide wheel, an outer guide wheel, and a side guide wheel. The inner guide wheel can roll on the front of the wing plate of the anti-fall rail, and the outer guide wheel can roll on the wing of the anti-fall rail. The board rolls on the back, and the side guide wheels can roll on the side of the wing board of the anti-fall rail.

Preferably, the outer guide wheel has a truncated cone-shaped structure, the outer diameter of the small diameter section of the outer guide wheel is greater than the outer diameter of the inner guide wheel, and the outer guide wheel contains an inner wheel body and a wear-resistant material layer, and the wear-resistant material layer is sleeved inside Outside the wheel body, the wear-resistant material layer is connected with the inner wheel body through an outer baffle and a countersunk screw.

Compared with the prior art, the present invention has achieved the following beneficial technical effects:

(1) The self-locking device for the anti-falling track provided by the present invention is detachable, so that it can be detached when the middle position of the guide rail cannot pass through, and it can continue to be installed and used after passing the obstacle point position.

(2) The self-locking device for the anti-falling track provided by the present invention solves the problem that the self-locking device is easy to jam when used on the anti-falling track of the power transmission line.

(3) The self-locking device for the anti-falling track provided by the present invention solves the problem of the difficulty of integrated and integral processing of the self-locking device.

(4) The self-locking device for the anti-falling track provided by the present invention is simple and practical, and runs smoothly on the anti-falling track of the power transmission line.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, without creative labor, other drawings can be obtained from these drawings.

Figure 1 is a schematic diagram of an existing anti-fall rail;

2 is a top perspective schematic view of the self-locking device for the anti-falling rail of the present invention;

Fig. 3 is a bottom perspective schematic view of the self-locking device for the anti-fall rail of the present invention;

4 is a schematic diagram of the use state of the self-locking device for the anti-falling rail of the present invention;

Figure 5 is a cross-sectional view of the self-locking device for the anti-fall rail of the present invention;

Figure 6 is a three-dimensional schematic view of the fixed side body;

Figure 7 is a perspective cross-sectional view of the fixed side body;

Figure 8 is a perspective schematic view of the open side main body;

Figure 9 is a schematic diagram of the fixed side body and the open side body in a connected state;

Figure 10 is a schematic diagram of the fixed side body and the open side body in a separated state;

Figure 11 is a front view of the first connecting shaft;

Figure 12 is a schematic diagram of the connection of the first connecting shaft, the opening side body and the stop screw;

Figure 13 is a schematic view of the structure of the outer guide wheel;

Figure 14 is a schematic diagram of the rotating rod;

1. Housing; 2. Spring; 3. Rotating rod; 4. First connecting shaft; 5. Spring stopper; 6. Limit screw; 7. Second connecting shaft; 8. Inner guide wheel; 9. Outer guide Wheel; 10, side guide wheel; 11, fixed side main body; 12, open side main body; 13, first fixed plate; 14, second fixed plate; 15, through groove;

20. Anti-falling track; 21. Front of wing plate; 22. Back of wing plate; 23. Side of wing plate;

41. Arch section; 42. Large diameter section; 43. Small diameter section; 44. Limit groove;

91. Inner wheel body; 92. Wear-resistant material layer; 93. Outer side baffle; 94. Countersunk screws.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a self-locking device for an anti-falling rail to solve the problems existing in the prior art.

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

This embodiment provides a self-locking device for an anti-falling track, as shown in Figures 1 to 5, comprising a housing 1, a spring 2, a rotating rod 3, and a first connecting shaft 4. The housing 1 contains an insert for inserting Connected to the through groove 15 of the anti-fall rail 20, the housing 1 includes a fixed side body 11 and an opening side body 12. The fixed side body 11 and the opening side body 12 are detachably connected, and both ends of the first connecting shaft 4 are respectively connected to the fixed side body 11 is connected to the opening side body 12, one end of the rotating rod 3 is located in the housing 1, the other end of the rotating rod 3 is located outside the housing 1, the first connecting shaft 4 passes through the rotating rod 3, the spring 2 can make the rotating rod 3 The first connecting shaft 4 rotates on a shaft and makes one end of the rotating rod 3 abut against the front face 21 of the wing plate of the anti-fall rail 20.

The section of the anti-fall rail 20 to which the self-locking device for anti-fall rail is applied is T-shaped or I-shaped. For example, the cross-section of the anti-fall rail 20 is T-shaped. The anti-fall rail 20 includes a wing plate and a bottom plate. The wing plate includes a wing plate front 21, a wing plate back 22, and a wing plate side 23. In a self-locking state, that is, when the anti-fall rail is installed on the anti-fall rail 20 with a self-locking device, the spring 2 provides pressure to the rotating rod 3 so that one end of the rotating rod 3 always abuts against the front face 21 of the wing plate of the anti-fall rail 20 Therefore, the self-locking device for the anti-fall rail cannot move relative to the anti-fall rail 20.

In this embodiment, as shown in FIGS. 6 to 8, in order to facilitate installation and processing, the fixed side body 11 and the opening side body 12 are detachably connected. The casing 1 is a split structure. The cross-section of the casing 1 is roughly in a concave shape. The fixed side body 11 includes a first fixed plate 13 and a second fixed plate 14 connected in sequence. The first fixed plate 13 is parallel to the open side body 12, The second fixing plate 14 is located between the first fixing plate 13 and the opening-side body 12, that is, the first fixing plate 13, the second fixing plate 14 and the opening-side body 12 are connected in sequence. One end of the first connecting shaft 4 is connected to the first fixing plate 13, and the other end of the first connecting shaft 4 is connected to the opening side main body 12.

In this embodiment, the second fixing plate 14 is provided with a spring mounting step hole, one end of the spring mounting step hole is fixed with a spring stopper 5, one end of the spring 2 abuts the spring stopper 5, and the other of the spring 2 One end is in contact with the rotating rod 3. The first connecting shaft 4 includes an arcuate section 41, a large diameter section 42, and a small diameter section 43 connected in sequence. The outer diameter of the arcuate section 41 is larger than the outer diameter of the large diameter section 42, and the outer diameter of the large diameter section 42 is larger than that of the small diameter section 43. path.

Among them, the section of the arcuate section 41 is arcuate, and the sections of the large diameter section 42 and the small diameter section 43 are both circular. The arcuate section 41 and the large-diameter section 42 of the first connecting shaft 4 are in interference fit with the first fixing plate 13, and the small-diameter section 43 of the first connecting shaft 4 passes through the rotating rod 3.

In this embodiment, in order to facilitate the detachable connection between the fixed side main body 11 and the opening side main body 12, the opening side main body 12 is connected with the limit screw 6, that is, the limit screw 6 is threadedly connected with the opening side main body 12. The end of the small-diameter section 43 is inserted into the opening-side main body 12, and the stop screw 6 can prevent the fixed-side main body 11 and the opening-side main body 12 from being separated.

Specifically, as shown in Figures 10, 11 and 12, the end of the small diameter section 43 is provided with a limiting groove 44. When the tail end of the limiting screw 6 is inserted into the limiting groove 44 of the first connecting shaft 4, The fixed side main body 11 and the open side main body 12 are in a connected and fixed state, that is, the fixed side main body 11 and the open side main body 12 cannot be separated, as shown in Figure 9, Figure 11 and Figure 12; when the end of the limit screw 6 When the limiting groove 44 of the first connecting shaft 4 is separated, the fixed side body 11 and the opening side body 12 can be separated, that is, the fixed side body 11 and the opening side body 12 are in a separated state.

When the fixed side main body 11 and the open side main body 12 are in the separated state shown in FIG. 10, the anti-fall rail 20 can be easily inserted into the through groove 15 of the self-locking device for the anti-fall rail; when the fixed side main body 11 and When the opening side main body 12 is in the connected state shown in FIG. 9, the self-locking device for the fall prevention rail can be prevented from being separated from the fall prevention rail 20.

In this embodiment, the self-locking device for the anti-fall rail further includes a second connecting shaft 7, which is parallel to the first connecting shaft 4, and the second connecting shaft 7 and the first connecting shaft 4 are mirror images of each other, Both ends of the second connecting shaft 7 are respectively connected to the fixed side body 11 and the opening side body 12. The connection mode of the second connecting shaft 7 and the fixed side main body 11 is exactly the same as the connection mode of the first connection shaft 4 and the fixed side main body 11. The connection mode of the second connection shaft 7 and the opening side main body 12 is the same as that of the first connection shaft 4 and The connection method of the opening side main body 12 is exactly the same. The second connecting shaft 7 can prevent relative rotation when the fixed side body 11 and the open side body 12 are in a separated state.

In this embodiment, the self-locking device for the anti-fall rail further includes an inner guide wheel 8, an outer guide wheel 9 and a side guide wheel 10. The inner guide wheel 8 can roll on the front face 21 of the wing plate of the anti-fall rail 20, and the outer The guide wheels 9 can roll on the wing back 22 of the anti-fall rail 20, and the side guide wheels 10 can roll on the wing side 23 of the anti-fall rail 20.

In this embodiment, as shown in FIG. 13, the outer guide wheel 9 has a truncated cone-shaped structure, the outer diameter of the small-diameter section of the outer guide wheel 9 is larger than the outer diameter of the inner guide wheel 8, and the outer guide wheel 9 contains an inner wheel body 91 And the wear-resistant material layer 92, the wear-resistant material layer 92 is sleeved outside the inner wheel body 91, and the wear-resistant material layer 92 is detachably connected to the inner wheel body 91 through the outer baffle 93 and the countersunk screw 94.

The following introduces a further introduction to the self-locking device for the anti-falling track.

The fixed side main body 11 and the open side main body 12 are the structural main bodies of the self-locking device, the fixed side main body 11 and the open side main body 12 are an asymmetric structure, and the fixed side main body 11 and the open side main body 12 are used as the installation structure and bearing of other structures. Structure, the split structure is easier to process than the integrated structure, which can effectively reduce the processing cost. The spring 2 is fixed in the fixed side main body 11, which can maintain the pressing force of one end of the rotating rod 3 on the front face 21 of the wing plate of the anti-fall rail 20. The fixed side main body 11 is machined with a stepped mounting hole for installing the spring and a stepped mounting hole The spring baffle 5 of the self-locking device is installed at the place, and an interference fit is adopted between the spring baffle 5 and the stepped mounting hole to limit the spring 2 and reduce the processing cost. A U-shaped ring is connected to the other end of the rotating rod 3. Pulling the U-shaped ring can release the pressing force of one end of the rotating rod 3 on the front face 21 of the wing plate of the anti-fall rail 20. At this time, the self-locking device for the anti-fall rail can move relative to the anti-fall rail 20.

The opening side body 12 can move a distance of 8mm-13mm relative to the fixed side body 11, that is, the opening side body 12 in FIG. 9 moves 8mm-13mm to the right and becomes the state shown in FIG. 10. After the self-locking device for the anti-fall rail is opened, the outer guide wheel 9 can move unilaterally and separate from the back 22 of the wing plate of the anti-fall rail. The self-locking device for the anti-fall rail can be removed or installed from the anti-fall rail 20 . In order to ensure that the opening side main body 12 does not rotate when moving relative to the fixed side main body 11, two connecting shafts are used to connect the fixed side main body and the connecting side main body, and play a role of guiding movement, and at the same time strengthen the overall strength of the body effect.

The inner guide wheel 8, the outer guide wheel 9, the side guide wheel 10 and the anti-fall rail 20 all use rolling friction when they move relative to each other. The inner guide wheel 8, the outer guide wheel 9 and the side guide wheel 10 all adopt "guide wheel + central axis" ”Structure, the guide wheel can rotate around the central axis, and there is a proper gap between the guide wheel and the track contact surface, and on the basis of ensuring the safety of the self-locking device, the passage of the self-locking device on the track is improved .

The inner guide wheel 8 and the outer guide wheel 9 together form a clamping effect on the wing plate of the anti-fall rail 20; when the self-locking device is in the unlocked state, the inner guide wheel 8 contacts the front surface 21 of the wing plate of the anti-fall rail 20 And relative rolling occurs. When a fall occurs and the self-locking device is in a locked state, the pressing face of the rotating rod 3 generates a pressing force on the front face 21 of the wing plate of the track, and at the same time the inner guide wheel 8 separates from the front face 21 of the wing plate of the track Contact; because the inner guide wheel 8 only has the rolling guiding function, the outer guide wheel 9 has the rolling guiding function, but also has to bear the impact force generated during the fall and limit the position of the self-locking device on the anti-fall track, so the outer guide The outer diameter of the wheel 9 is larger than the outer diameter of the inner guide wheel 8, and the number is two more.

The outer guide wheel 9 is in the shape of a truncated cone, which can better fit the shape of the back 22 of the wing plate of the guide rail, so as to increase the contact area with the back 22 of the rail wing plate. When the outer guide wheel 9 rubs against the steel material of the track, it is easy to wear and needs to be replaced frequently, so the structure is designed to be easy to open and replace. The number of inner guide wheels 8 is 4, the number of outer guide wheels 9 is 6, and the number of side guide wheels 10 is 4.

As shown in Figure 14, the rotating rod 3 is able to effectively bear the impact of the fall and has a high sensitive locking performance through reasonable design of the rotation center, the load center and the relative position and shape of the pressing surface. When falling, the impact load of the human body's fall acts on the load center through the U-shaped ring, and pulls the rotating block to rotate around the center of rotation, and then the compression surface compresses the anti-fall rail and locks it on the rail. The fall load is transmitted through the rotating block and the connecting shaft. To the machine body, prevent the operator from falling and ensure the safety of the operator.

The present invention uses specific examples to illustrate the principles and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the present invention There will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be construed as a limitation of the present invention.

Claims

A self-locking device for an anti-falling track, which is characterized in that it comprises a housing (1), a spring (2), a rotating rod (3) and a first connecting shaft (4). The housing (1) contains a Connected to the through groove (15) of the anti-fall rail (20), the housing (1) contains a fixed side body (11) and an opening side body (12), the fixed side body (11) and the opening side body (12) are detachably connected , The two ends of the first connecting shaft (4) are respectively connected with the fixed side body (11) and the open side body (12), one end of the rotating rod (3) is located in the housing (1), and the other of the rotating rod (3) One end is located outside the housing (1), the spring (2) can make the rotating rod (3) rotate about the first connecting shaft (4), and make one end of the rotating rod (3) and the wing of the anti-fall rail (20) The front side (21) of the board abuts.
The self-locking device for the anti-fall rail according to claim 1, characterized in that: the fixed side main body (11) contains a first fixing plate (13) and a second fixing plate (14) connected in sequence, and the first fixing plate ( 13) is parallel to the opening side main body (12), and the second fixing plate (14) is located between the first fixing plate (13) and the opening side main body (12).
The self-locking device for the anti-fall rail according to claim 2, characterized in that: the second fixing plate (14) is provided with a spring mounting step hole, and one end of the spring mounting step hole is fixed with a spring stopper (5) One end of the spring (2) is connected with the spring baffle (5), and the other end of the spring (2) is connected with the rotating rod (3).
The self-locking device for the anti-fall track according to claim 2, characterized in that: the first connecting shaft (4) contains an arcuate section (41), a large diameter section (42) and a small diameter section (43) which are connected in sequence, and the arcuate The outer diameter of the section (41) is larger than the outer diameter of the large-diameter section (42), and the outer diameter of the large-diameter section (42) is larger than the outer diameter of the small-diameter section (43).
The self-locking device for the anti-fall track according to claim 4, characterized in that: the arcuate section (41) and the large diameter section (42) of the first connecting shaft (4) are in interference fit with the first fixing plate (13) , The small diameter section (43) of the first connecting shaft (4) passes through the rotating rod (3).
The self-locking device for the anti-fall rail according to claim 5, characterized in that the opening side main body (12) is connected with the limit screw (6), and the end of the small diameter section (43) is inserted into the opening side main body (12) Inside, the stop screw (6) can prevent the fixed side body (11) from being separated from the opening side body (12).
The self-locking device for the anti-fall track according to claim 6, characterized in that: the end of the small diameter section (43) is provided with a limiting groove (44), when the end of the limiting screw (6) is inserted into the first connection When the limit groove (44) of the shaft (4), the fixed side main body (11) and the open side main body (12) are connected and fixed; when the end of the limit screw (6) is separated from the first connecting shaft (4) When the limiting groove (44) is formed, the fixed side body (11) and the open side body (12) can be separated.
The self-locking device for the anti-falling rail according to claim 1, wherein the self-locking device for the anti-falling rail further comprises a second connecting shaft (7), the second connecting shaft (7) and the first connecting shaft ( 4) Parallel, the second connecting shaft (7) and the first connecting shaft (4) are mirror images of each other, and the two ends of the second connecting shaft (7) are respectively connected with the fixed side body (11) and the open side body (12).
The self-locking device for the anti-falling rail according to claim 1, wherein the self-locking device for the anti-falling rail further comprises an inner guide wheel (8), an outer guide wheel (9) and a side guide wheel (10), The inner guide wheel (8) can roll on the front side (21) of the wing plate of the anti-fall rail (20), and the outer guide wheel (9) can roll on the back side (22) of the wing plate (22) of the anti-fall rail (20), and is guided on the side The wheel (10) can roll on the side surface (23) of the wing plate of the anti-fall rail (20).
The self-locking device for the anti-fall track according to claim 9, characterized in that the outer guide wheel (9) has a truncated cone-shaped structure, and the outer diameter of the small diameter section of the outer guide wheel (9) is larger than that of the inner guide wheel (8) Outer diameter, the outer guide wheel (9) contains an inner wheel body (91) and a wear-resistant material layer (92), the wear-resistant material layer (92) is sleeved outside the inner wheel body (91), and the wear-resistant material layer (92) It is connected with the inner wheel body (91) through the outer side baffle (93) and the countersunk screw (94).