Anti-falling fire hose

Abstract

The utility model provides an anti-drop fire hose, which relates to the technical field of fire hoses and comprises a first connecting part and a second connecting part which are arranged at the connecting ends of two hoses, a plurality of clamping blocks are arranged on the outer ring of the first connecting part at equal angles, and a clamping groove for the clamping blocks to axially slide is formed in the inlet of the inner ring of the second connecting part. The tail end of the clamping groove is provided with a limiting annular groove for the clamping blocks to slide in the annular direction, and a locking mechanism capable of being clamped between every two adjacent clamping blocks is arranged in the clamping groove. According to the anti-falling fire hose, when the fire hose is clamped, clamping blocks on the first connecting part are aligned with clamping grooves and then inserted into the bottommost part, and then clamping can be completed by rotating the clamping blocks by a certain angle along limiting ring grooves; during unlocking, only the linkage ring needs to be poked downwards to drive the top plate to be separated from the space between the two clamping blocks, then the first connecting part is rotated, and the clamping blocks enter the clamping grooves again and then are pulled out; and compared with locking and unlocking by adopting a plurality of screw rods in a spiral mode, the clamping efficiency is greatly improved, and more advantages are achieved in the fire extinguishing process.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hoses, in particular to an anti-falling fire hose. Background Art

[0002] A fire hose is a flexible pipe used to transport flame-retardant liquids such as high-pressure water or foam. Traditional fire hoses are lined with rubber and wrapped with linen fabric on the outside. Advanced fire hoses are made of polymer materials such as polyurethane. There are metal joints at both ends of the fire hose, which can be connected to another hose to extend the distance or to a nozzle to increase the liquid spray pressure.

[0003] However, when using firefighting, the connection between the fire hose and the fire hydrant is troublesome, and during the firefighting process, the water pressure sprayed from the fire hydrant is too high, thereby causing the connection between the fire hose and the fire hydrant to be disconnected, causing problems affecting the speed of firefighting.

[0004] There are also some relatively sturdy anti-falling fire hoses on the market, such as an anti-falling fire hose with Chinese patent publication number CN209221393U: "When in use, the staff inserts the pin on the connecting block one into the pin slot on the connecting block two, so that the compression spring is compressed and the positioning block moves into the positioning slot, which effectively prevents the connecting block one and the connecting block two from falling off. The sleeve is rotated by the handle to make the telescopic rod drive the positioning block to move outward, and the positioning block is taken out of the positioning slot, so that the baffle pushes the pin to move to the left, thereby improving the efficiency of splitting the connecting block one and the connecting block two."

[0005] This connection structure controls the disengagement of the positioning block by the cooperation between the positioning block and the positioning groove and by the spiral rotation of the adjusting rod. Since multiple adjusting rods are provided, they need to be unscrewed one by one when unhooking the water hose, and the adjusting rods need to be screwed to the deepest point before they can be used when fastening the connection again. The rotation process is time-consuming and inefficient. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the deficiencies in the prior art, the utility model provides an anti-falling fire hose, which solves the problems raised in the above-mentioned background technology.

[0008] (II) Technical solution

[0009] To achieve the above purpose, the utility model is implemented through the following technical scheme: a fire hose that prevents falling off, including a connecting part one and a connecting part two arranged at the connecting ends of two hoses, a plurality of clamping blocks are arranged at equal angles on the outer ring of the connecting part one, a clamping groove for axial sliding of the clamping block is provided at the entrance of the inner ring of the connecting part two, a limiting ring groove for annular sliding of the clamping block is provided at the end of the clamping groove, and a locking mechanism that can be clamped between two adjacent clamping blocks is provided in the clamping groove.

[0010] Preferably, the locking mechanism includes a top plate and a spring, the top plate is axially slidably adapted in a limiting ring groove, a spring cavity for accommodating the spring is axially opened at the bottom of the limiting ring groove, and the top plate is connected to the spring.

[0011] Preferably, a linkage ring connected to a plurality of top plates is disposed on the outer surface of the second connecting portion, and the linkage ring can slide axially along the outer surface of the second connecting portion.

[0012] Preferably, the circumferential angle of each of the clamping blocks is the same as the circumferential angle of the groove between two adjacent clamping blocks.

[0013] Preferably, a hemispherical protrusion is provided in the limiting ring groove between two adjacent clamping grooves, and a hemispherical groove matched with the protrusion is provided at the bottom of the clamping block.

[0014] Preferably, the number of the card blocks and the number of the card slots are both six.

[0015] (III) Beneficial effects

[0016] The utility model provides a fire hose that prevents falling off. It has the following beneficial effects:

[0017] 1. When inserting the fire hose, you only need to align the block on the connecting part with the slot and insert it to the bottom, and then rotate it along the limit ring groove for a certain angle to complete the clamping; when unlocking, you only need to push the linkage ring downward to drive the top plate out of the space between the two blocks, and then rotate the connecting part to make the block re-enter the slot and then pull it out; compared with using multiple spiral screws to lock and unlock, the clamping efficiency is greatly improved, which has more advantages in the race against time firefighting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a corresponding diagram of the connection part 1 and the connection part 2 of the utility model;

[0019] Figure 2 It is a schematic diagram of the groove of the utility model;

[0020] Figure 3 It is a half-section view of the connection part 1 and the connection part 2 of the utility model being clamped together.

[0021] In the figure: 1 water hose, 2 connecting part 1, 3 connecting part 2, 4 clamping block, 5 clamping groove, 6 limiting ring groove, 7 top plate, 8 spring cavity, 9 spring, 10 linkage ring, 11 protrusion, 12 groove. DETAILED DESCRIPTION

[0022] The utility model provides a fire hose that prevents falling off, such as Figure 1-3 As shown, it includes a connection part 1 2 and a connection part 2 3 arranged at the connection ends of two water hoses 1, a plurality of blocks 4 are arranged at equal angles on the outer ring of the connection part 1 2, and a groove 5 for the axial sliding of the blocks 4 is provided at the entrance of the inner ring of the connection part 2 3, and the circumferential angle of each block 4 is the same as the circumferential angle of the groove between two adjacent blocks 4. In this embodiment, the number of blocks 4 and grooves 5 is six. The circumferential angle of each block 4 is 30°. The size of the groove 5 is slightly larger than that of the block 4.

[0023] The end of the slot 5 is provided with a limiting annular groove 6 for the block 4 to slide in an annular direction, and the depth of the limiting annular groove 6 is slightly greater than the thickness of the block 4. When the block 4 is inserted into the bottom of the slot 5, it can slide into the limiting annular groove 6 in an annular direction.

[0024] In order to prevent the connection part 1 2 and the connection part 2 3 from falling off after being engaged, a locking mechanism that can be engaged between two adjacent blocks 4 is provided in the engagement groove 5 .

[0025] like Figure 2 As shown, the locking mechanism includes a top plate 7 and a spring 9. The top plate 7 is axially slidably adapted in the limiting ring groove 6. The bottom of the limiting ring groove 6 is axially provided with a spring cavity 8 for accommodating the spring 9. The top plate 7 is connected to the spring 9. When the block 4 presses the top plate 7 downward, the spring 9 is gradually compressed in the spring cavity 8. The size of the top plate 7 is larger than the cross-sectional size of the spring cavity 8.

[0026] The outer sleeve of the connecting part 2 3 is provided with a linkage ring 10 connected to a plurality of top plates 7, and a through groove is provided on the outer wall of the connecting part 2 3 along the sliding direction of the top plates 7, and the linkage ring 10 can drive a plurality of fixed top plates 7 to slide along the outer axis of the connecting part 2 3. Only one linkage ring 10 is needed to control the linkage of a plurality of top plates 7.

[0027] In order to facilitate the positioning of the clamping block 4 in the circumferential rotation in the limiting ring groove 6, a hemispherical protrusion 11 is provided between two adjacent clamping grooves 5 in the limiting ring groove 6, and a hemispherical groove 12 matching the protrusion 11 is provided at the bottom of the clamping block 4. The protrusion 11 is made of rubber material, so that it has a certain plasticity when being squeezed by the clamping block 4.

[0028] Principle of clamping: First, align the multiple clamping blocks 4 on the connection part 1 2 with the clamping grooves 5 on the connection part 2 3 one by one, and slide along the clamping grooves 5 to the limiting ring groove 6 at the bottom, and then rotate 30 degrees in the annular direction, so that the grooves 12 on the clamping blocks 4 are sleeved on the protrusions 11 to complete the positioning. Finally, the top plate 7 moves upward to the space between two adjacent clamping blocks 4 under the action of the spring 9, realizing the annular limit of the connection part 1 2, and the limiting ring groove 6 realizes the axial limit of the connection part 1 2.

[0029] Unlocking principle: The linkage ring 10 drives several top plates 7 to slide to the bottom along the bottom direction of the card slot 5. Preferably, an embedding groove can be opened at the bottom of the limiting ring groove 6 for the top plate 7 to be embedded. After the top plate 7 enters the embedding groove, rotate the connecting part 2, rotate the card block 4 30° to align it with the card slot 5, and then pull it out directly.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire hose that prevents falling off, comprising a connecting portion 1 (2) and a connecting portion 2 (3) arranged at the connecting ends of two hoses (1), characterized in that: A plurality of clamping blocks (4) are arranged at equal angles on the outer ring of the connecting part 1 (2); a clamping groove (5) for the clamping block (4) to slide axially is provided at the entrance of the inner ring of the connecting part 2 (3); a limiting ring groove (6) for the clamping block (4) to slide circumferentially is provided at the end of the clamping groove (5); a locking mechanism capable of being clamped between two adjacent clamping blocks (4) is provided in the clamping groove (5).

2. The fire hose that prevents falling off according to claim 1 is characterized in that: The locking mechanism comprises a top plate (7) and a spring (9); the top plate (7) is axially slidably adapted in a limiting ring groove (6); a spring cavity (8) for accommodating the spring (9) is axially opened at the bottom of the limiting ring groove (6); and the top plate (7) is connected to the spring (9).

3. The fire hose that prevents falling off according to claim 2 is characterized in that: The outer sleeve of the second connecting part (3) is provided with a linkage ring (10) connected to a plurality of top plates (7), and the linkage ring (10) can slide along the outer axial direction of the second connecting part (3).

4. The fire hose that prevents falling off according to claim 1 is characterized in that: The circumferential angle of each clamping block (4) is the same as the circumferential angle of the groove between two adjacent clamping blocks (4).

5. The fire hose that prevents falling off according to claim 1 is characterized in that: A hemispherical protrusion (11) is arranged between two adjacent clamping grooves (5) in the limiting ring groove (6), and a hemispherical groove (12) matching the protrusion (11) is arranged at the bottom of the clamping block (4).

6. The fire hose that prevents falling off according to claim 4 is characterized by: The number of the card blocks (4) and the number of the card slots (5) are both six.

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