Portable tower anti-falling device

Abstract

An inner cavity of a main body sliding block is matched with a T-shaped guide rail and moves on the T-shaped guide rail, and an upper protrusion of an arc-shaped structure is arranged on the inner side of the upper surface of the flange, close to the T-shaped guide rail, of the main body sliding block; the multiple sets of guide wheels are distributed on the two opposite sides of the flange of the T-shaped guide rail in two rows. The upper ends and the lower ends of the guide wheels are symmetrically provided with conical parts. The radial correction assembly is used for driving the guide wheel to radially move; the axial correction assembly is used for driving the guide wheel to move in the axial direction. Through structural optimization design, it is ensured that the anti-falling device can smoothly pass through the dislocation position of the guide rail joint, flexibility is achieved, climbing personnel are not affected, and therefore the safety and effect of high-altitude operation are improved. The radial correcting assemblies and the axial correcting assemblies are matched to drive the guide wheels to move, so that various dislocation conditions can be adapted, the cost of manually adjusting the dislocation guide rail is saved, and the high-altitude operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anti-falling for aerial work, and in particular to a lightweight tower anti-falling device. Background Art

[0002] Power grid maintenance personnel face safety challenges when working at heights. In order to ensure the safety of workers working at heights when climbing pole towers, a T-shaped guide rail is usually fixed on the pole tower, and the workers working at heights are connected to a fall prevention device that moves on the T-shaped guide rail through a safety rope.

[0003] For example, the patent publication number CN113577592A discloses a "multifunctional anti-fall guide rail for iron towers". When a worker suddenly falls from a high altitude, the bound rope will pull down the rope connection block, so that the anti-fall column is inserted into the anti-fall hole, so that the anti-fall device can be quickly positioned and stuck, reducing the damage that may be caused by the impact of falling;

[0004] However, the fixed T-type guide rails have the problem of misalignment of the guide rail joints during long-term use. It was found that the guide rail joints mainly have misalignment in the front-to-back direction within 2 cm, and there may also be misalignment in the left-to-right direction during the installation process, causing the anti-fall safety buckle to be stuck at the misalignment, making it impossible for people to climb up safely.

[0005] Currently, most anti-fall devices are unable to achieve adaptive adjustment of misaligned guide rails. When the guide rail connection is misaligned, maintenance personnel are required to manually knock on the guide rail to restore it to a range where the anti-fall device can pass. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a portable tower anti-falling device to solve the above problems.

[0007] The present invention provides the following technical solutions:

[0008] A portable tower anti-fall device, comprising:

[0009] A main body slider, wherein the inner cavity of the main body slider is adapted to the T-shaped guide rail and moves on the T-shaped guide rail, and an upper protrusion with an arc structure is arranged on the inner side of the upper surface of the flange of the main body slider close to the T-shaped guide rail;

[0010] Guide wheels, wherein a plurality of groups of guide wheels are arranged in two rows on opposite sides of the flange of the T-shaped guide rail, and symmetrically arranged conical portions are provided at both ends of the upper and lower ends of the guide wheels;

[0011] A radial correction assembly, the radial correction assembly is used to drive the guide wheel to move along its radial direction;

[0012] An axial correction component is used to drive the guide wheel to move along its axial direction.

[0013] Preferably, a pressure block is connected to the main sliding block via a locking screw group, and the end of the pressure block relative to the locking screw group is in an eccentric arc structure.

[0014] Preferably, the distance between the two groups of tapered portions at the upper and lower ends of the guide wheel is adapted to the flange height of the T-shaped guide rail.

[0015] Preferably, the angle between the edge line of the tapered portion and the axis of the guide wheel is 25°-35°.

[0016] Preferably, a lower protrusion is provided on one side of the main body slider close to the lower surface of the flange of the T-shaped guide rail, and the upper surface of the lower protrusion is inclined and matched with the lower surface of the flange of the T-shaped guide rail.

[0017] Preferably, there are four groups of guide wheels distributed at the four corners of the main slider.

[0018] Preferably, the guide wheel sleeve is movably arranged on a one-to-one corresponding and coaxial outer wall of the rotating shaft.

[0019] Preferably, the radial correction assembly includes an internal slider and a first spring, the internal slider linearly slides on the main slider, the end of the rotating shaft is installed on the internal slider, and the elastic force of the first spring pushes the guide wheel of the internal slider close to the flange side wall of the T-shaped guide rail.

[0020] Preferably, the axial correction assembly includes a rotating shaft spring block and a second spring, the rotating shaft spring block is movably mounted on the corresponding rotating shaft, the rotating shaft spring blocks are arranged above and below the guide wheel, and the second spring is arranged between the rotating shaft spring block and the internal slider.

[0021] Preferably, it also includes a side block, which is installed on the side wall of the main slider through a bolt assembly, and a sliding groove for the internal slider to slide linearly is formed between the side block and the main slider.

[0022] The present invention has the following beneficial technical effects:

[0023] The present invention ensures that the anti-fall device can smoothly pass through the misaligned joint of the guide rail through structural optimization design, is flexible and does not affect climbers, thereby improving the safety and effect of high-altitude operations.

[0024] The radial correction component and the axial correction component cooperate to drive the guide wheel to be movable, which can adapt to various misalignment situations, save the cost of manual adjustment of the misaligned guide rail, and improve the efficiency of high-altitude operations.

[0025] The present invention has a stronger locking ability and can more effectively and safely protect the lives of personnel when facing emergencies.

[0026] This design has better movement stability. During high-altitude operations, due to the spring preload and the internal protrusions of the device, the T-rail can be limited accordingly, thereby more effectively reducing shaking and vibration during work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a stereoscopic isometric view of the present invention;

[0028] Figure 2 is a side view of the present invention;

[0029] Figure 3 It is the front view of the present invention;

[0030] Figure 4 It is a main cross-sectional view of the present invention;

[0031] Figure 5 is a side sectional view of the present invention;

[0032] Figure 6 It is a schematic diagram of the upper protrusion of the inner cavity of the main body slider of the present invention;

[0033] Figure 7 is a cross-sectional view of the guide wheel and its matching parts of the present invention;

[0034] Figure 8 It is a schematic diagram of the present invention running at the misaligned position of the T-shaped guide rail.

[0035] The reference numerals in the figure are:

[0036] 1. Side block; 2. Main slider; 21. Upper protrusion; 22. Lower protrusion; 3. Locking screw set; 4. Pressure block; 5. Guide wheel; 51. Conical part; 6. Rotating shaft spring block; 7. Rotating shaft; 8. Second spring; 9. Internal slider; 100. T-type guide rail. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example:

[0039] A portable tower anti-fall device, such as Figure 1-8 As shown:

[0040] A plurality of sections of T-shaped guide rails 100 are vertically connected end to end on the tower in sequence, and the joints between adjacent T-shaped guide rails 100 have the problem of front-to-back and left-to-right misalignment.

[0041] The inner cavity of the main slider 2 is adapted to the T-shaped guide rail 100, and the main slider 2 moves relatively on the T-shaped guide rail 100; with the main slider 2 as the central body, four groups of side blocks 1 are symmetrically arranged at the four corners of the main slider 2, and the side blocks 1 are detachably mounted on the side wall of the main slider 2 through a bolt assembly, and a slide groove is formed between the side blocks 1 and the main slider 2, and an internal slider 9 is linearly slidably connected in the slide groove, and a first spring (not shown in the drawings) is connected between the internal slider 9 and the inner side wall of the slide groove;

[0042] The upper and lower ends of the guide wheel 5 are provided with conical portions 51, and the conical portions 51 at the upper and lower ends of the guide wheel 5 are symmetrically arranged, and the angle between the edge line of the conical portion 51 and the axis of the guide wheel 5 is 25°-35° (preferably 29°); the guide wheel 5 is freely rotatably connected to the outer wall of the coaxial rotating shaft 7, and the outer wall of the rotating shaft 7 is located above and below the guide wheel 5 and is movably sleeved with a rotating shaft spring block 6, and the end of the rotating shaft 7 is relatively fixed to the internal slider 9, and a second spring 8 is connected between the internal slider 9 and the rotating shaft spring block 6, and the spacing between the two groups of rotating shaft spring blocks 6 is greater than the length of the guide wheel 5.

[0043] like Figure 8 As shown, the main slider 2 is perpendicular to the axial direction of the guide wheel 5 and the length of the T-shaped guide rail 100 is the ascending direction. The four sets of guide wheels 5 on the main slider 2 are symmetrical in the length direction of the T-shaped guide rail 100 to achieve smooth sliding and efficient self-locking.

[0044] like Figure 6 As shown, the inner cavity top wall of the main slider 2 is provided with an upper protrusion 21, which is used to contact and cooperate with the upper surface of the flange of the T-shaped guide rail 100, and the upper protrusion 21 is an arc-shaped structure; Figure 3-4 As shown, two groups of left-right symmetrical lower protrusions 22 are provided on the bottom wall of the inner cavity of the main slider 2, and the inclined upper surface of the lower protrusion 22 is used to contact and cooperate with the lower surface of the flange of the T-shaped guide rail 100. The inclined upper surface of the T-shaped guide rail 100 is a 12° inclined surface that matches the lower surface of the flange of the T-shaped guide rail 100. Through the cooperation of the upper protrusion 21 in the inner cavity of the main slider 2 and the two groups of lower protrusions 22, not only can the T-shaped guide rail 100 enter the inner cavity of the main slider 2 for a certain limit, but also the displaced guide rail can smoothly pass through the internal cavity of the T-shaped guide rail 100.

[0045] like Figure 1-2As shown, the clamping end of the pressure block 4 adopts an eccentric wheel structure, and the eccentric part of the clamping end of the pressure block 4 is connected to the upper part of the main slider 2 through the locking screw group 3, and the other end of the pressure block 4 is connected to the user through a pull rope; a torsion spring is connected between the clamping end of the pressure block 4 and the upper part of the main slider 2. Under normal circumstances, the torsion spring ensures that the clamping end of the pressure block 4 will not clamp the T-shaped guide rail 100 during normal operation, and the main slider 2 can be smoothly pulled. In an emergency, the pressure block 4 is driven to rotate by the pull rope, so that the clamping end of the pressure block 4 rotates eccentrically relative to the locking screw group 3, thereby realizing that the clamping end of the pressure block 4 effectively clamps the T-shaped guide rail 100. At the same time, the lower surface of the flange of the T-shaped guide rail 100 and the upper surface of the lower protrusion 22 achieve surface-to-surface contact to improve friction.

[0046] like Figure 3 As shown, it is a state diagram under normal conditions. At this time, the circumferential surface of the guide wheel 5 contacts the flange side wall of the T-shaped guide rail 100, and the flange of the T-shaped guide rail 100 is relatively located between the two groups of tapered portions 51. There is a certain distance between the lower surface of the flange of the T-shaped guide rail 100 and the upper surface of the lower protrusion 22, and there is a certain distance between the upper surface of the flange of the T-shaped guide rail 100 and the upper surface of the upper protrusion 21.

[0047] When the joints between adjacent T-shaped guide rails 100 are misaligned left and right, the flange of the T-shaped guide rail 100 relatively pushes the guide wheel 5 to move radially, the internal slider 9 relatively moves in the slide groove and compresses the first spring to generate a reverse elastic force, thereby adapting to the radial misalignment of the T-shaped guide rail 100.

[0048] When the joints between adjacent T-guide rails 100 are misaligned front to back, the flanges of the misaligned T-guide rails 100 first contact the inclined surfaces of the tapered portions 51 of the guide wheel 5, thereby driving the guide wheel 5 to move axially relative to the rotating shaft 7 and contact the rotating shaft spring block 6, thereby pushing the rotating shaft spring block 6 close to the corresponding internal slider 9 and compressing the second spring 8, so as to enable the misaligned T-guide rail 100 to slide quickly into the normal circumferential sliding surface of the guide wheel 5, that is, the front and rear pairs of guide wheels 5 of the mechanism can work simultaneously at different plane heights at this time, thereby achieving front and rear direction adjustment of the misaligned T-guide rail 100, thereby adapting to the axial misalignment of the T-guide rail 100.

[0049] It can also adapt to the T-shaped guide rail 100 left and right, front and back misalignment.

[0050] Parts of the tower anti-fall device, such as the side block 1, the main slider 2, the pressure block 4, the guide wheel 5, the shaft spring block 6, the shaft 7, and the internal slider 9, can be designed with aluminum alloy, which can reduce the weight of the device while ensuring the strength.

[0051] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A portable tower anti-fall device, characterized in that: include: A main body slider (2), the inner cavity of the main body slider (2) being adapted to the T-shaped guide rail (100) and moving on the T-shaped guide rail (100), and an upper protrusion (21) with an arc-shaped structure being arranged on an inner side of an upper surface of a flange of the main body slider (2) close to the T-shaped guide rail (100); Guide wheels (5), wherein a plurality of groups of guide wheels (5) are arranged in two rows on opposite sides of the flange of the T-shaped guide rail (100), and symmetrically arranged conical portions (51) are provided at both ends of the upper and lower ends of the guide wheels (5); A radial correction component, the radial correction component is used to drive the guide wheel (5) to move along its radial direction; An axial correction component is used to drive the guide wheel (5) to move along its axial direction.

2. A portable tower anti-falling device according to claim 1, characterized in that: The main body sliding block (2) is connected to a pressing block (4) via a locking screw group (3), and the end of the pressing block (4) relative to the locking screw group (3) is in an eccentric arc structure.

3. A portable tower anti-falling device according to claim 1, characterized in that: The distance between the two groups of tapered portions (51) at the upper and lower ends of the guide wheel (5) is adapted to the flange height of the T-shaped guide rail (100).

4. A portable tower anti-falling device according to claim 3, characterized in that: The angle between the edge line of the tapered portion (51) and the axis of the guide wheel (5) is 25°-35°.

5. A portable tower anti-falling device according to claim 1, characterized in that: A lower protrusion (22) is provided on one side of the main body sliding block (2) close to the lower surface of the flange of the T-shaped guide rail (100); the upper surface of the lower protrusion (22) is inclined and matched with the lower surface of the flange of the T-shaped guide rail (100).

6. A portable tower anti-falling device according to claim 1, characterized in that: There are four groups of guide wheels (5) distributed at the four corners of the main sliding block (2).

7. A portable tower anti-falling device according to claim 1, characterized in that: The guide wheel (5) is sleeved and movably mounted on the outer wall of the rotating shaft (7) which is in one-to-one correspondence and coaxial.

8. A portable tower anti-falling device according to claim 7, characterized in that: The radial correction assembly comprises an internal slider (9) and a first spring. The internal slider (9) is linearly slidably matched on the main slider (2). The end of the rotating shaft (7) is mounted on the internal slider (9). The elastic force of the first spring pushes the guide wheel (5) of the internal slider (9) close to the flange side wall of the T-shaped guide rail (100).

9. A portable tower anti-falling device according to claim 8, characterized in that: The axial correction component comprises a rotating shaft spring block (6) and a second spring (8), wherein the rotating shaft spring block (6) is movably mounted on the corresponding rotating shaft (7), the rotating shaft spring block (6) is disposed above and below the guide wheel (5), and the second spring (8) is disposed between the rotating shaft spring block (6) and the internal slider (9).

10. A portable tower anti-falling device according to claim 9, characterized in that: It also comprises a side block (1), which is mounted on the side wall of the main slider (2) by means of a bolt assembly, and a slide groove is formed between the side block (1) and the main slider (2) for the internal slider (9) to slide linearly.

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