Hydropower station tail water pipeline rope ladder fixing device

Abstract

The invention relates to a hydropower station tail water pipeline rope ladder fixing device, which is applied in a hydropower station tail water pipeline and comprises a rope ladder, the upper end of which is fixed at a metal pipeline inlet; the two magnetic attraction assemblies are arranged on the left side and the right side of the rope ladder and installed on the surface of a steel lining of a metal pipeline in a magnetic attraction mode. Two ends of the rope are respectively connected with the lower end of the rope ladder and the magnetic component; the device is suitable for being fixed in a metal pipeline, electric welding is not needed, and the surface of a pipeline steel lining cannot be damaged. And the device is convenient to carry and mount, and the rope ladder is fixed under the condition that the construction environment in the steel pipe is poor.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower station maintenance, and in particular to a tailwater pipeline ladder fixing device for a hydropower station. Background Art

[0002] The tailwater of a hydropower station needs to be regularly inspected and maintained. The tailwater pipe has an arc-shaped entrance from the manhole to the bottom, with a vertical drop of more than ten meters. Operators need to use a soft ladder fixed at the upper end to enter the tailwater pipe. A soft ladder is a tool for high-altitude operations and climbing, usually a rope-type, with the characteristics of no length restrictions, softness, easy transportation, and lightness. It consists of a ladder hook, a ladder rope, a ladder pedal, etc. The ladder hook is used to hang the ladder, the ladder rope is used to support the ladder, and the ladder pedal is for people to step on. Compared with ordinary ladders, soft ladders are softer, lighter, and not restricted in length, making them more suitable for use at high altitudes or in special environments.

[0003] For example, the "A Fire-fighting Life-saving Ladder" disclosed in patent announcement number CN202706900U includes a left ladder frame, a right ladder frame, and a plurality of crossbars evenly arranged between the left ladder frame and the right ladder frame from top to bottom, wherein the two ends of the crossbars are respectively fixedly connected to the left ladder frame and the right ladder frame, wherein the left and right ends of the top crossbars are respectively fixed with a left lashing rope and a right lashing rope. The left ladder frame and the right ladder frame are soft ropes coated with a wear-resistant and fireproof insulating layer. The structure is simple, easy to carry, and can be folded for storage, and will not take up a lot of space;

[0004] However, due to the structural characteristics of the tailwater pipe, when on-site workers climb the soft ladder, there is a risk of people falling from a height due to uneven force, shaking and flipping of the ladder, as the lower end of the ladder is located in the smooth tailwater pipe with no fulcrum.

[0005] The existing practice is to weld two anchor points in the tailwater pipe, pull the lower part of the soft ladder onto the anchor points, and work together with the two fixed points on the upper part to ensure the stability of the soft ladder. Electric welding is carried out in a limited space, the construction conditions are harsh, the operation is difficult and there is a risk of hypoxia; the anchor points affect the water flow capacity of the tailwater pipe flow channel, and the steel lining surface of the pipeline will also be damaged during welding. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a hydropower station tailwater pipeline ladder fixing device to solve the above problems.

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

[0008] A flexible ladder fixing device for tailwater pipeline of a hydropower station, used in the tailwater pipeline of a hydropower station, comprises:

[0009] A soft ladder, the upper end of which is fixed to the entrance of the metal pipe;

[0010] A magnetic suction component, wherein two groups of the magnetic suction components are arranged on the left and right sides of the soft ladder, and the magnetic suction components are installed on the steel lining surface of the metal pipe;

[0011] The rope has two ends respectively connected to the lower end of the soft ladder and the magnetic attraction component.

[0012] Preferably, the magnetic attraction component includes a shell and a switch-type magnet arranged on the shell, and the lower end of the rope is connected to the switch-type magnet.

[0013] Preferably, the shell and the switch-type magnet are connected via a plurality of springs, a fixed pulley is rotatably connected to the top of the shell, the rotation axis of the fixed pulley is horizontally arranged, and the lower end of the rope is connected to the switch-type magnet after being guided by the fixed pulley.

[0014] Preferably, a non-slip pad is provided at a portion of the shell that is in contact with the surface of the steel lining of the metal pipe.

[0015] Preferably, the upper end of the rope is connected to the ladder via a lock.

[0016] Preferably, it also includes an adjusting component, which can be detachably mounted on any ladder pedal of the ladder, and the two groups of magnetic suction components share a rope, which is connected to the ladder through the adjusting component.

[0017] Preferably, the adjustment assembly includes a U-shaped or C-shaped sleeve that is compatible with the ladder tread of the soft ladder, a bottom sleeve is provided at the bottom of the sleeve, an upper pressure piece and a lower pressure piece are provided in the bottom sleeve, the rope passes through the upper pressure piece and the lower pressure piece in the bottom sleeve, and a bottom plate fixedly connected to the upper pressure piece is provided in the sleeve; when the ladder tread of the soft ladder is embedded in the sleeve, the upper pressure piece and the lower pressure piece cooperate to clamp the rope.

[0018] Preferably, a shell is provided below the bottom sleeve, and two sets of spring turntables are built in the shell, and the ends of the two sets of ropes facing away from the magnetic suction assembly are wound around the outer walls of the corresponding spring turntables.

[0019] Preferably, the outer wall of the sleeve is provided with a plurality of straps with holes, the bottom sleeve is provided with a turntable, and the outer side wall of the turntable is provided with columns used in conjunction with the holes.

[0020] Preferably, the turntable is rotatably connected to the bottom sleeve, a wire pressing portion is provided on the turntable extending outward, and an avoidance groove matched with the wire pressing portion is provided on the lower pressing member.

[0021] The present invention has the following beneficial technical effects:

[0022] The present invention is suitable for fixing inside metal pipes, does not require electric welding, and does not damage the surface of the steel lining of the pipe. The device is easy to carry and install, and can fix the soft ladder under the condition of poor construction environment inside the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the magnetic attraction component of the present invention;

[0025] Figure 3 It is a schematic diagram of the cooperation of two sets of magnetic suction components, ropes and adjustment components of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the regulating component of the present invention;

[0027] Figure 5 is a cross-sectional view of the adjustment assembly of the present invention;

[0028] Figure 6 It is a schematic diagram of the cooperation between the rotating disk and the pressing member of the present invention;

[0029] Figure 7 It is a schematic diagram of the cooperation between the housing of the present invention and the spring rotating disk inside it.

[0030] The reference numerals in the figure are:

[0031] 100. Metal pipe entrance; 200. Soft ladder; 300. Magnetic suction assembly; 400. Rope; 402. Spring turntable; 403. Shell; 500. Adjustment assembly;

[0032] 31. switch magnet; 32. spring; 33. housing; 34. fixed pulley; 35. anti-slip pad;

[0033] 51. Sleeve; 52. Bottom sleeve; 53. Bottom plate; 54. Binding strap; 541. Belt hole; 55. Upper pressing piece; 56. Lower pressing piece; 561. Avoidance groove; 57. Turntable; 571. Post; 572. Wire pressing part. DETAILED DESCRIPTION

[0034] 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.

[0035] Embodiment 1:

[0036] A flexible ladder fixing device for tailwater pipeline of a hydropower station, such as Figure 1-2 As shown:

[0037] The upper end of the soft ladder 200 is installed at the metal pipe entrance 100, and two groups of magnetic suction components 300 are arranged on the left and right sides of the lower part of the soft ladder 200, respectively. The magnetic suction components 300 are magnetically fixed on the steel lining surface of the metal pipe;

[0038] The magnetic attraction assembly 300 includes a switch magnet 31, a spring 32, a shell 33, a fixed pulley 34 and an anti-slip pad 35. The anti-slip pad 35 is fixed to the lower surface of the shell 33. The switch magnet 31 and the shell 33 are connected by a number of evenly arranged springs 32. The fixed pulley 34 is rotatably connected to the upper part of the shell 33. The upper end of the rope 400 is arranged on the soft ladder 200 through a locking sleeve, and the lower end of the rope 400 is connected to the switch magnet 31 after being turned by the fixed pulley 34.

[0039] The switch-type magnet 31 is adsorbed on the surface of the steel lining to act as a fixing device. By utilizing the combination of the rope 400 and the fixed pulley 34, the lateral shear force that the device may be subjected to is converted into a vertical force consistent with the adsorption force of the switch-type magnet 31, thereby improving the shear resistance of the magnetic attraction component 300.

[0040] Embodiment 2: includes all the contents of Embodiment 1, except that Figure 3-6 As shown:

[0041] The ends of the two groups of ropes 400 are respectively connected to the switch-type magnets 31 of the two groups of magnetic attraction components 300. The ropes 400 are relatively long and have a margin.

[0042] The adjustment assembly 500 includes a sleeve 51, a bottom sleeve 52, a bottom plate 53, a strap 54, an upper pressing piece 55, a lower pressing piece 56 and a rotating disc 57;

[0043] The sleeve 51 is hollow inside and has an opening in a U-shaped or C-shaped structure and is adapted to the ladder step of the soft ladder 200. The bottom sleeve 52 is fixed to the bottom of the sleeve 51. A lower pressing piece 56 is fixedly arranged at the lower part of the inner cavity of the bottom sleeve 52. An upper pressing piece 55 is movably arranged at the upper part of the inner cavity of the bottom sleeve 52. A friction pattern is arranged on the side where the upper pressing piece 55 and the lower pressing piece 56 are close to each other for cooperating with the rope 400. A bottom plate 53 is arranged at the lower part of the inner cavity of the sleeve 51, and the bottom plate 53 is fixedly connected to the upper pressing piece 55.

[0044] Rope 400 (such as Figure 4 The two sets of ropes 400 are respectively wound around the corresponding spring turntables 402 at the other ends (as shown by the red lines in FIG. 4 ). The two sets of spring turntables 402 are arranged in the inner cavity of the shell 403 and the shell 403 is located below the bottom sleeve 52.

[0045] The turntable 57 is rotatably connected to the side wall of the bottom sleeve 52, and a plurality of evenly arranged columns 571 are provided on the periphery of the turntable 57. The columns 571 adopt a spring telescopic rod structure for pressing, and a wire pressing portion 572 is also provided on the periphery of the turntable 57; the turntable 57 is reset under the action of the torsion spring, and an avoidance groove 561 is provided on the upper surface of the lower pressing member 56 corresponding to the position of the wire pressing portion 572. Under normal circumstances, the wire pressing portion 572 is attached to the lower surface of the upper pressing member 55.

[0046] like Figure 7 As shown: it also includes a shell 403, the shell 403 is hollow inside and is provided with two groups of spring turntables 402, the rope 400 is wound around the corresponding spring turntables 402, the shell 403 is arranged below the bottom sleeve 52, the rope 400 can be tightened by the spring turntable 402 to wind up the excess rope 400, so that the shell 403 is close to the bottom sleeve 52, so as to avoid the rope 400 below the bottom sleeve 52 and the sleeve 51 from becoming an obstacle when climbing up and down the ladder.

[0047] Working principle:

[0048] The rope 400 is tightened under the action of the spring turntable 40, and a ladder step of any height of the soft ladder 200 can be embedded in the sleeve 51 according to the needs, and the bottom plate 53 in the sleeve 51 is pressed down by the ladder step, and the bottom plate 53 descends to drive the upper pressing piece 55 to approach the lower pressing piece 56, and the upper pressing piece 55 and the lower pressing piece 56 cooperate to clamp the rope 400 therein, so that part of the rope 400 between the magnetic attraction component 300 and the soft ladder 200 is in a tightened state.

[0049] The turntable 57 is manually driven to rotate so that the wire pressing part 572 rotates into the avoidance groove 561, thereby bending the rope 400 at this part. The bent rope 400 increases the friction between the upper pressing piece 55 and the lower pressing piece 56. Then, the strap 54 is tightened and one of the belt holes 541 is mounted on one of the columns 571. The tightened strap 54 further reduces the internal space of the sleeve 51.

[0050] The belt hole 541 of the strap 54 can be detached by pressing the column 571 .

[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 hydropower station tailwater pipeline ladder fixing device, characterized in that: Used in tailwater pipes of hydropower stations, including: A flexible ladder (200), the upper end of which is fixed to the metal pipe entrance (100); A magnetic attraction component (300), wherein the magnetic attraction component (300) is provided with two groups arranged on the left and right sides of the flexible ladder (200), and is magnetically installed on the steel lining surface of the metal pipe; A rope (400), wherein two ends of the rope (400) are respectively connected to the lower end of the soft ladder (200) and the magnetic attraction component (300).

2. A hydropower station tailwater pipeline ladder fixing device according to claim 1, characterized in that: The magnetic attraction component (300) comprises a housing (33) and a switch-type magnet (31) arranged on the housing (33); the lower end of the rope (400) is connected to the switch-type magnet (31).

3. A hydropower station tailwater pipeline ladder fixing device according to claim 2, characterized in that: The housing (33) and the switch-type magnet (31) are connected via a plurality of springs (32); a fixed pulley (34) is rotatably connected to the top of the housing (33); the rotation axis of the fixed pulley (34) is horizontally arranged; and the lower end of the rope (400) is connected to the switch-type magnet (31) after being guided by the fixed pulley (34).

4. A hydropower station tailwater pipeline ladder fixing device according to claim 3, characterized in that: The portion of the outer shell (33) that is used to contact the surface of the steel lining of the metal pipeline is provided with an anti-slip pad (35).

5. A hydropower station tailwater pipeline ladder fixing device according to claim 2, characterized in that: The upper end of the rope (400) is connected to the ladder (200) via a lock.

6. A hydropower station tailwater pipeline ladder fixing device according to claim 1, characterized in that: It also includes an adjustment component (500), which can be detachably mounted on any ladder pedal of the soft ladder (200); the two groups of magnetic suction components (300) share a rope (400), and the rope (400) is connected to the soft ladder (200) through the adjustment component (500).

7. A hydropower station tailwater pipeline ladder fixing device according to claim 6, characterized in that: The adjustment assembly (500) comprises a U-shaped or C-shaped sleeve (51) adapted to the ladder tread of the soft ladder (200); a bottom sleeve (52) is arranged at the bottom of the sleeve (51); an upper pressing piece (55) and a lower pressing piece (56) are arranged inside the bottom sleeve (52); a bottom plate (53) fixedly connected to the upper pressing piece (55) is arranged inside the sleeve (51) between the upper pressing piece (55) and the lower pressing piece (56) in the bottom sleeve (52) through which the rope (400) passes; when the ladder tread of the soft ladder (200) is embedded in the sleeve (51), the upper pressing piece (55) and the lower pressing piece (56) cooperate to clamp the rope (400).

8. A hydropower station tailwater pipeline ladder fixing device according to claim 7, characterized in that: A shell (403) is arranged below the bottom sleeve (52), and two groups of spring turntables (402) are built in the shell (403). One end of the two groups of ropes (400) facing away from the magnetic attraction component (300) is wound around the outer wall of the corresponding spring turntable (402).

9. A hydropower station tailwater pipeline ladder fixing device according to claim 7, characterized in that: The outer wall of the sleeve (51) is provided with a plurality of straps (54) with holes (541); the bottom sleeve (52) is provided with a rotating disk (57); and the outer wall of the rotating disk (57) is provided with a column (571) used in conjunction with the holes (541).

10. A hydropower station tailwater pipeline ladder fixing device according to claim 9, characterized in that: The rotating disk (57) is rotatably connected to the bottom sleeve (52); a wire pressing portion (572) is extended outwardly from the rotating disk (57); and an avoidance groove (561) adapted to the wire pressing portion (572) is provided on the lower pressing member (56).

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