Anti-falling device for subway pipeline supporting steel enclosing purlin

Abstract

The utility model belongs to the technical field of subway supporting, and particularly relates to an anti-falling device for a subway pipeline supporting steel enclosing purlin. The device comprises two hooks, a connecting mechanism for connecting the two hooks is arranged between the two hooks, the connecting mechanism comprises two adjusting rods, fixing pipes in threaded fit with the adjusting rods are arranged on the adjusting rods, one end of each adjusting rod penetrates out of the corresponding fixing pipe to be fixedly provided with a pull ring connected with the corresponding hook, and a rotating assembly is arranged between the two fixing pipes. The rotating assembly is used for connecting the two fixing pipes and enabling the fixing pipes to rotate independently. The combined length of the fixed pipe and the adjusting rod is adjusted, so that the tightness degree is adjusted; and through the two fixing pipes, the two fixing pipes can rotate independently, one-way adjustment can be conducted, and adjustment of the tightness degree is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of subway support, in particular to an anti-falling device for subway pipeline supporting steel purlins. Background Art

[0002] In subway construction, open-cut method is a commonly used construction method for building subway stations because of its advantages such as more construction working surfaces, fast speed, short construction period, easy to ensure project quality and low project cost. Open-cut method requires digging foundation pits, and in order to prevent foundation pit collapse, the foundation pit needs to be internally supported. The existing internal supports of the foundation pit include poured concrete supports, steel pipe supports and H-shaped steel supports; and the steel pipe supports need to be used in conjunction with the purlins.

[0003] Most of the existing purlins are made of steel purlins, and steel purlins generally use double-piece I-beams. Steel plates are welded on the facing and back-facing sides of the I-beams. The thickness of the steel plate on the facing side is smaller than that on the back-facing side. A triangular bracket is installed on the retaining structure of the foundation pit, and then the steel purlin is installed on the triangular bracket. The steel purlins are welded to each other, and concrete is backfilled between the steel purlins and the retaining structure. When the concrete meets the design requirements, the steel pipe can be supported on the steel purlin for support.

[0004] In order to ensure the stability of the steel purlin and prevent it from falling and injuring people when the support is dismantled, an anti-falling device is provided at the end of the steel purlin. The existing anti-falling device includes two hooks, one of which is fixed to the enclosure structure by an expansion bolt, and the other is fixed to the steel purlin. The two hooks are connected by a steel rope or a basket bolt. When in use, it is necessary to adjust the length of the steel rope so that the steel rope is tightened to achieve the pulling effect, but it is inconvenient to adjust the length of the steel rope, that is, it is inconvenient to adjust the tightness. When the basket bolt is used for connection, it is not convenient to rotate the adjusting rod alone after the basket bolt is connected to the hook, and only the pull rod can be rotated. Rotating the pull rod will cause the pull rod to move on the two adjusting rods, which is not convenient for unidirectional adjustment. Utility Model Content

[0005] The utility model aims to provide a falling prevention device for a subway pipeline supporting steel purlin, which is convenient for adjusting the tightness.

[0006] The anti-falling device for subway pipeline supporting steel purlin comprises two hooks, a connecting mechanism for connecting the two hooks is arranged between the two hooks, the connecting mechanism comprises two adjusting rods, a fixing pipe threadedly matched with the adjusting rods is arranged on the adjusting rods, one end of the adjusting rods passes through the fixing pipes and is fixed with a pull ring connected to the hooks, a rotating assembly is arranged between the two fixing pipes, and the rotating assembly is used to connect the two fixing pipes and make the fixing pipes rotate independently.

[0007] Furthermore, the rotating assembly includes a first fixed block and a second fixed block, the first fixed block is fixed to the end of one of the fixed tubes, the second fixed block is fixed to the end of the other fixed tube, a fixing rod perpendicular to the first fixed block is fixed to the side of the first fixed block close to the second fixed block, a through hole is opened on the second fixed block for the fixing rod to pass through, and a limit block is fixed to the fixing rod passing through the through hole to prevent the fixing rod from detaching from the through hole.

[0008] Furthermore, the limiting block is a circular plate, and a bearing is provided between the limiting block and an inner side wall of the fixing tube to which the second fixing block is fixed.

[0009] Furthermore, the first fixing block and the second fixing block are both circular plates, and the diameters of the first fixing block and the second fixing block are consistent with the outer diameter of the fixing tube.

[0010] Furthermore, a first fixing plate is fixed on one of the hooks, and the first fixing plate is fixed to the enclosure structure by expansion bolts; a second fixing plate is vertically fixed on the other hook, and the hook is obliquely fixed to the top of the second fixing plate, and two limiting plates parallel to the second fixing plate are arranged on one side of the second fixing plate, with a gap between the two limiting plates, and the two limiting plates are respectively fixed to the top and bottom of the second fixing plate by two connecting blocks, and one of the limiting plates is horizontally provided with a threaded hole, and a bolt threadably matched with the second fixing plate is arranged in the threaded hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model adjusts the tightness by adjusting the combined length of the fixed tube and the adjusting rod; and by using two fixed tubes and enabling the two fixed tubes to rotate independently, one-way adjustment can be performed, making the adjustment of the tightness more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0015] Figure 3 for Figure 1 A schematic diagram of the front view structure of

[0016] Figure 4 This is a diagram of the use state of the utility model;

[0017] The names of the components in the figure are: 1, hook 2, adjusting rod 3, pull ring 4, first fixing plate 5, fixing pipe 6, bolt 7, limit plate 8, connecting block 9, second fixing plate 10, first fixing block 11, second fixing block 12, limit block 13, fixing rod 14, enclosure structure 15, steel purlin. DETAILED DESCRIPTION

[0018] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0019] The anti-falling device for a subway pipeline supporting steel purlin described in this embodiment is as follows: Figure 1 , Figure 2 and Figure 3 As shown, it includes two hooks 1, and a connecting mechanism connecting the two hooks 1 is arranged between them. The connecting mechanism includes two adjusting rods 2, and the adjusting rods 2 are provided with fixing tubes 5 threadedly matched therewith. The adjusting rods 2 are screw rods, and the inner side wall of the fixing tube 5 is provided with an internal thread. In some embodiments, the adjusting rods 2 can also be lead screws, and the inner side wall of the fixing tube 5 is a structure of a lead screw nut; one end of the adjusting rods 2 passes through the fixing tube 5 and is fixed with a pull ring 3 connected to the hook 1, and is hooked on the hook 1 through the pull ring 3, so that the hook 1 and the pull ring 3 are connected.

[0020] A first fixing block 10 is fixed to the end of one of the fixing tubes 5, and a second fixing block 11 is fixed to the end of the other fixing tube 5. A fixing rod 13 perpendicular to the first fixing block 10 is fixed to the side close to the second fixing block 11. The fixing rod 13 is perpendicular to the side of the first fixing block 10 close to the second fixing block 11. A through hole for the fixing rod 13 to pass through is opened on the second fixing block 11. A limiting block 12 is fixed to the fixing rod 13 through the through hole to prevent the fixing rod 13 from escaping from the through hole. The limiting block 12 is a circular plate. The diameter of the through hole on the second fixing block 11 is smaller than the diameter of the limiting block 12 to avoid the limiting block 11 2 passes through the through hole, and the stop block 12 prevents the fixing rod 13 from being separated from the through hole on the second fixing block 11, so that the second fixing block 11 and the fixing rod 13 are connected, that is, the second fixing block 11 and the first fixing block 10 are connected, so that the two fixing pipes 5 are connected, and the fixing rod 13 rotates in the through hole on the second fixing block 11, so that when a single fixing pipe 5 rotates, it will not drive the other fixing pipe 5 to rotate, so that the two fixing pipes 5 rotate independently and can be adjusted in one direction; this paragraph of text as a whole constitutes a rotating assembly for connecting two fixing pipes 5 and making the fixing pipes 5 rotate independently.

[0021] Of course, in some embodiments, the rotating assembly may also not need the second fixed block 11, and a bearing is provided between the fixed rod 13 and another fixed tube 5, and the fixed rod 13 is connected to the fixed tube 5 through the bearing so that the fixed rod 13 can rotate independently in the fixed tube 5.

[0022] The limit block 12 is a circular plate, and a bearing is arranged between the limit block 12 and the inner side wall of the fixed tube 5 to which the second fixed block 11 is fixed. The limit block 12 is located in the fixed tube 5 fixed to the second fixed block 11, and a bearing is arranged between the limit block 12 and the inner side wall of the fixed tube 5. The inner ring of the bearing is fixedly sleeved on the limit block 12, and the outer ring of the bearing is fixed to the inner side wall of the fixed tube 5. The bearing prevents the fixing rod 13 from deviating in the through hole on the second fixed block 11, so that the rotation of the fixing rod 13 is smoother; of course, in actual use, the bearing can also be arranged between the through hole on the fixing rod 13 and the second fixed block 11.

[0023] The first fixing block 10 and the second fixing block 11 are both circular plates, and the diameters of the first fixing block 10 and the second fixing block 11 are consistent with the outer diameter of the fixing tube 5, so that the edge of the first fixing block 10 and the edge of the second fixing block 11 are flush with the outer side wall of the fixing tube 5, avoiding the first fixing block 10 and the second fixing block 11 protruding from the outer side wall of the fixing tube 5 to cause obstruction, making it easy to hold the fixing tube 5 for rotation.

[0024] In some embodiments, a first fixing plate 4 is fixed to one of the hooks 1, and the hook 1 can be tilted and fixed to the bottom of the first fixing plate 4, and the first fixing plate 4 is fixed to the enclosure structure by expansion bolts; a second fixing plate 9 is vertically fixed to the other hook 1, and the hook 1 is tilted and fixed to the top of the second fixing plate 9, and two limiting plates 7 parallel to it are arranged on one side of the second fixing plate 9, and the limiting plate 7 is located on the side where the hook 1 is tilted, such as the top of the bottom hook 1 is tilted to the upper left, and the limiting plate 7 is located on the left side of the second fixing plate 9, and there is a gap between the limiting plate 7 and the second fixing plate 9, and there is a gap between the two limiting plates 7, and the two limiting plates 7 are respectively fixed to the top and bottom of the second fixing plate 9 by two connecting blocks 8, and one of the limiting plates 7 is horizontally opened with a threaded hole communicating with the left and right, and a bolt 6 threadedly matched with it is arranged in the threaded hole; such as Figure 4 As shown, because the existing steel purlin 15 is generally a double I-beam structure, the second fixing plate 9, the limiting plate 7 and the connecting block 8 can be hung on the side of the steel purlin 15 away from the enclosure structure 14, and then the second fixing plate 9 and the steel purlin 15 are fixed by bolts 6, and the limiting plate 7 and the second fixing plate 9 are slid on the steel purlin 15 to change the position of the second fixing plate 9 on the steel purlin 15, so that the second fixing plate 9 and the steel purlin 15 are in a detachable structure, which is more convenient when disassembling; of course, in actual use, the second fixing plate 9 and the steel purlin 15 can also be directly welded.

[0025] Working principle:

[0026] When using, Figure 4 As shown, a hook 1 is fixed to the enclosure structure 14 through the first fixing plate 4 and the expansion bolt, and then the other hook 1 is fixed to the steel enclosure purlin 15 through the second fixing plate 9, the connecting block 8, the limit plate 7 and the bolt 6, and then the two pull rings 3 are hung on the hooks 1 respectively, and the fixing tube 5 is rotated to adjust the combined length between the fixing tube 5 and the adjusting rod 2, so as to adjust the tightness between the two hooks 1, better hang the steel enclosure purlin 15, increase the fixing effect of the steel enclosure purlin 15, and prevent the steel enclosure purlin 15 from detaching during disassembly, and the two fixing tubes 5 can be rotated independently through the fixing rod 13 and the limit block 12, so that when adjusting, when one of the fixing tubes 5 is rotated, the other fixing tube 5 will not rotate, and unidirectional adjustment can be performed, so that the adjustment of the tightness is more convenient.

Claims

1. A falling prevention device for a subway pipeline supporting steel purlin, comprising two hooks (1), a connecting mechanism for connecting the two hooks (1) being arranged between the two hooks (1), characterized in that: The connection mechanism comprises two adjusting rods (2), each of which is provided with a fixing tube (5) threadedly matched therewith, one end of each adjusting rod (2) passing through the fixing tube (5) and fixed with a pull ring (3) connected to the hook (1), and a rotating assembly is provided between the two fixing tubes (5), the rotating assembly being used to connect the two fixing tubes (5) and enable the fixing tubes (5) to rotate independently.

2. The anti-falling device for subway pipeline supporting steel purlin according to claim 1 is characterized in that: The rotating assembly comprises a first fixing block (10) and a second fixing block (11); the first fixing block (10) is fixed to the end of one of the fixing tubes (5); the second fixing block (11) is fixed to the end of the other fixing tube (5); a fixing rod (13) perpendicular to the first fixing block (10) is fixed on one side of the first fixing block (10) close to the second fixing block (11); a through hole for the fixing rod (13) to pass through is provided on the second fixing block (11); a stop block (12) is fixed to the fixing rod (13) passing through the through hole to prevent the fixing rod (13) from escaping from the through hole.

3. The anti-falling device for subway pipeline supporting steel purlin according to claim 2 is characterized in that: The limiting block (12) is a circular plate, and a bearing is provided between the limiting block (12) and the inner side wall of the fixed tube (5) to which the second fixed block (11) is fixed.

4. The anti-falling device for subway pipeline supporting steel purlin according to claim 3 is characterized in that: The first fixing block (10) and the second fixing block (11) are both circular plates, and the diameters of the first fixing block (10) and the second fixing block (11) are consistent with the outer diameter of the fixing tube (5).

5. The anti-falling device for subway pipeline supporting steel purlin according to claim 1 or 4, characterized in that: A first fixing plate (4) is fixed on one of the hooks (1), and the first fixing plate (4) is fixed to the enclosure structure by means of expansion bolts; a second fixing plate (9) is vertically fixed on the other hook (1), and the hook (1) is obliquely fixed to the top of the second fixing plate (9); two limiting plates (7) parallel to the second fixing plate (9) are arranged on one side of the second fixing plate (9), a gap is provided between the two limiting plates (7), and the two limiting plates (7) are respectively fixed to the top and bottom of the second fixing plate (9) by means of two connecting blocks (8); a threaded hole is horizontally provided on one of the limiting plates (7), and a bolt (6) threadably matched with the second fixing plate (9) is arranged in the threaded hole.

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