A wear resistance detection device for fire hose

Abstract

The application provides a wear resistance detection device for a fire hose, which detects a hose body and comprises a workbench, symmetrical butt joints are arranged at both ends of the top of the workbench, a slide rail is arranged on the top of the workbench, a support is slidably connected to the slide rail, the support is connected to the bottom of the butt joint, an inner ring is pivotally connected to the inner end of the butt joint, a flange is arranged on the inner side of the inner ring, the flange extends into the port of the hose body, and an outer hoop is arranged on the port of the hose body. The workbench, butt joint, outer hoop, polisher, ball screw and soft bone support are arranged, the hose body is supported by the soft bone support, the outer wall of the hose sample is kept in a uniform tension state during friction, the friction consistency is improved, the test error is reduced, the polisher is internally provided with floor stones, metal blocks and stone particle balls, different scene tests are increased, the wear degree of different objects on the fire hose is simulated and detected, various tests are formed, the friction mode is avoided from being too single, and the test effect is improved.

Description

Technical Field

[0001] This invention relates to the technical field of fire hose testing devices, and in particular to a device for testing the abrasion resistance of fire hoses. Background Technology

[0002] Fire hoses are flexible tubes used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses have a rubber inner lining and an outer surface covered with woven linen.

[0003] During the production of fire hoses, fire hoses are sampled and tested to check their abrasion resistance. This is to prevent low-quality fire hoses from circulating in the market. The abrasion resistance test usually involves rubbing the surface of the fire hose with a grinding wheel or sandpaper, and then water is poured into the fire hose to check whether the airtightness of the fire hose is good and whether there is any damage.

[0004] Existing equipment mostly uses fixed friction surfaces (such as sandpaper or metal rollers) to perform unidirectional or double-sided reciprocating friction on the surface of the hose. This cannot simulate the multi-angle dynamic contact wear that occurs between the hose and rough ground, stones, metal edges, etc. in a real fire. The friction mode is singular, and the test results often rely on manual visual inspection of wear marks, which can easily lead to large errors in the test data. Summary of the Invention

[0005] To address the shortcomings of existing testing equipment in physics, which cannot simulate real-world environments, suffer from limited friction modes, rely on manual visual inspection for test results, and exhibit large errors in test structures.

[0006] The technical solution provided by this invention is as follows: A wear resistance testing device for fire hoses, used to test the hose body, includes a workbench, with symmetrically arranged docking nozzles at both ends of the top of the workbench, a slide rail on the top of the workbench, a bracket slidably fitted on the slide rail, the bracket connected to the bottom of the docking nozzle, an inner ring pivotally connected to the inner end of the docking nozzle, a flange on the inner side of the inner ring extending into the hose body port, an outer hoop on the hose body port, the outer hoop tightly fitting and clamping the hose body port with the inner ring flange, and a grinder above the workbench, with the hose body horizontally passing through the grinder in the horizontal direction.

[0007] The grinder consists of two semicircular rings, with three grooves inside each semicircular ring. Groove 1 contains a floor stone, groove 2 contains a metal block, and groove 3 contains a stone particle ball. The floor stone is used to simulate a rough ground, the metal block is used to simulate metal edges, and the stone particle ball is used to simulate a stone. The surfaces of the floor stone, the metal block, and the stone particle ball can all come into contact with the surface of the water hose body.

[0008] The bottom of the workbench is equipped with a drive unit. Two semi-circular rings are spliced ​​together to form a ring that wraps around the water belt body. The drive unit drives the grinder to rotate rapidly, and at the same time, the drive unit drives the grinder to move back and forth left and right.

[0009] Multiple cartilage supports are placed along the length of the water hose body. The multiple cartilage supports are connected by connecting rods. The cartilage supports are snowflake-shaped with multiple branches. The ends of the multiple branches have arc-shaped strips that fit against the inner wall of the water hose body.

[0010] It also includes a detection component, which consists of two vertical plates and two horizontal plates. There is a gap between the two vertical plates that can accommodate the diameter of the water hose body. The two horizontal plates are symmetrically arranged between the two vertical plates. The horizontal plates are slidably fitted with sliders. A steel wire connects the upper and lower sliders. A tension sensing unit is installed on the opposite side of the sliders.

[0011] The end of the vertical plate is fixedly connected to the end of the horizontal plate by screws. The horizontal plate has a through groove along its length. The slider slides in the through groove. A motor-driven screw is pivotally connected in the through groove. The screw thread passes through the slider. The surface of the horizontal plate is engraved with graduations along the length of the through groove.

[0012] The working end of the tension sensing unit is equipped with a hook, and the end of the steel wire is connected to a hanging ring. The hook hooks onto the hanging ring, and the steel wire is in a state of just tension.

[0013] The groove is provided with two insert plates. The lower end of the insert plates is hinged to the inner wall of the groove. The two insert plates are connected to a spring on the side away from each other. The end of the spring away from the insert plate is connected to the inner wall of the groove. The bottom of the floor stone is arc-shaped, and the bottom of the floor stone has a groove that matches the insert plates.

[0014] The metal block is prismatic, with one edge used to contact the surface of the water hose body. A heating mold is installed in the second groove, and the heating module is in contact with the second groove.

[0015] It also includes a water tank, with a water pipe connected to the end of the water tank, and the water pipe is connected to the connector.

[0016] The drive unit includes a ball screw, which is located on the top of the worktable. A base is connected to the sliding balls of the ball screw, and a motor-driven roller is mounted on the base. The outer surface of the grinder contacts the roller, and a protrusion is provided on the outer side of the grinder to block the roller.

[0017] The beneficial effects of the technical solution provided by this invention include:

[0018] The system includes a workbench, connector, outer clamp, grinder, ball screw, and flexible support. The flexible support supports the hose body, ensuring uniform tension on the outer wall of the hose sample during friction, improving friction consistency and reducing testing errors. The grinder contains floor stones, metal blocks, and stone granules to increase the testing scenarios and simulate the wear and tear on the fire hose from different objects, creating a variety of test methods and avoiding overly simplistic friction patterns. This improves testing effectiveness.

[0019] A rectangular frame is constructed using vertical and horizontal plates. Multiple sliders slide within this frame, forming pairs of sliders. A tension sensor and a steel wire work together to create a trigger mechanism. As the sliders move, the steel wire moves closer to the water hose sample. The tension sensor registers a reading to determine if the wire is in contact with the sample. This allows for the estimation of the slider's displacement distance and further calculation of the degree of wear. This method replaces manual visual inspection of wear, making detection more convenient and efficient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure and operation of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the cartilage scaffold structure of the present invention; Figure 4 This is an exploded view of a partial structure of the present invention; Figure 5 This is a structural diagram of the grinder of the present invention; Figure 6 This is a schematic diagram of the floor stone structure of the present invention; Figure 7 This is a schematic diagram of the horizontal plate structure of the present invention.

[0021] In the diagram: 1. Workbench, 11. Slide rail, 2. Connecting nozzle, 21. Bracket, 22. Inner ring, 3. Outer hoop, 4. Grinding tool, 41. Groove I, 411. Insert plate, 412. Spring, 42. Groove II, 43. Groove III, 44. Floor stone, 441. Gap, 45. Metal block, 46. Stone pellet ball, 47. Protrusion, 5. Ball screw, 51. Base, 52. Roller, 6. Cartilage support, 61. Connecting rod, 7. Vertical plate, 8. Horizontal plate, 81. Through groove, 82. Screw, 83. Slider, 84. Tension sensing unit, 85. Steel wire, 9. Water tank, 10. Water hose body. Detailed Implementation

[0022] A device for testing the abrasion resistance of fire hoses, used to test the hose body 10, includes a workbench 1. Symmetrical connecting nozzles 2 are located at the left and right ends of the top of the workbench 1. A slide rail 11 is welded to the top of the workbench 1, and a bracket 21 is slidably fitted onto the slide rail 11. The bracket 21 is welded to the bottom of the connecting nozzle 2. An inner ring 22 is pivotally connected to the inner end of the connecting nozzle 2. An integrally formed flange is formed on the inner side of the inner ring 22, extending into the port of the hose body 10. An outer hoop 3 is fitted over the port of the hose body 10, tightly fitting and clamping the port of the hose body 10 with the flange of the inner ring 22. A grinder 4 is located above the workbench 1, and the hose body 10 passes horizontally through the grinder 4.

[0023] The grinder 4 consists of two semicircular rings, with grooves 41, 42, and 43 inside each ring. A floor stone 44 is fixedly installed in groove 41, a metal block 45 is fixedly installed in groove 42, and a stone particle ball 46 is fixedly installed in groove 43. The floor stone 44 is used to simulate a rough ground, the metal block 45 is used to simulate metal edges, and the stone particle ball 46 is used to simulate a stone. The surfaces of the floor stone 44, the metal block 45, and the stone particle ball 46 can all contact the surface of the water hose body 10.

[0024] The aforementioned floor stones 44, metal blocks 45, and stone granules 46 are used as friction materials to rub the water hose 10 sample. They can be freely combined as needed to increase test data results and simulate different environments.

[0025] The bottom of the workbench 1 is equipped with a drive unit. Two semi-circular rings are spliced ​​together to form a ring that wraps around the water hose body 10. The drive unit drives the grinder 4 to rotate rapidly, and at the same time, the drive unit drives the grinder 4 to move back and forth left and right.

[0026] Multiple cartilage supports 6 are placed along the length of the hose body 10. Connecting rods 61 are fixedly installed between the multiple cartilage supports 6. The cartilage supports 6 are snowflake-shaped with multiple branches, and the ends of the multiple branches are integrally formed with arc-shaped strips that fit against the inner wall of the hose body 10. The cartilage supports 6 provide support, so that the outer wall of the hose remains in a uniform tension state during friction, thus improving the consistency of friction.

[0027] Installation steps: Cut several sections of the fire hose sample for testing. Floor stones 44, metal blocks 45, and stone granules 46 can be combined arbitrarily according to requirements and installed in the corresponding grooves. Now, insert the bracket into the hose body 10. The connector 2, carrying the inner ring 22, extends into the port of the hose body 10. At this time, the connector 2 and the center of the cartilage support 6 are in contact. The outer hoop 3 clamps the inner ring 22. Use screws to assemble the two semi-circular rings together to wrap around the hose body 10.

[0028] It also includes a detection component, which consists of two vertical plates 7 and two horizontal plates 8. There is a gap between the two vertical plates 7 that can accommodate the diameter of the water hose body 10. The two horizontal plates 8 are symmetrically arranged between the two vertical plates 7, forming a rectangular frame through the cooperation of the vertical plates 7 and the horizontal plates 8. The horizontal plates 8 are slidably fitted with sliders 83, and a steel wire 85 connects the upper and lower sliders 83.

[0029] The end of the vertical plate 7 is fixedly connected to the end of the horizontal plate 8 by screws. The horizontal plate 8 has a through groove 81 along its length. The slider 83 is slidably fitted in the through groove 81. A motor-driven screw 82 is pivotally connected in the through groove 81. The screw 82 threaded through the slider 83. The surface of the horizontal plate 8 is engraved with scales along the length of the through groove 81.

[0030] A hook is fixedly installed at the working end of the tension sensing unit 84, and a hanging ring is fixedly tied to the end of the steel wire 85. The hook hooks onto the hanging ring, and the steel wire 85 is in a state of just tension.

[0031] Working principle: The motor rotates the screw 82, which in turn moves the slider 83, causing them to slowly approach each other. When the steel wire 85 touches the water hose sample 10, it deforms and is stretched. The steel wire 85 pulls the tension sensing unit 84, which transmits the information to the computer terminal. The computer terminal immediately stops the screw 82 from rotating. The inspector records the scale at which the slider 83 stops at this point.

[0032] Record the readings once before friction and once after friction. Based on the difference between the two readings, calculate the degree of wear on the hose body.

[0033] Secondly, since the inner ring 22 can rotate, the test area can be changed by rotating the original inner ring 22 during the test, thereby further enriching the test data.

[0034] Two insert plates 411 are provided in the groove 41. The lower end of the insert plates 411 is hinged to the inner wall of the groove 41. A spring 412 is welded to one side of the two insert plates 411 away from each other. The end of the spring 412 away from the insert plates 411 is welded to the inner wall of the groove 41. The bottom of the floor stone 44 is arc-shaped, and the bottom of the floor stone 44 has a clamping groove 441 that matches the insert plates 411. The insert plates 411 are used to fix the floor stone 44. Since the floor stone 44 is arc-shaped, when the bottom of the floor stone 44 is inserted between the two insert plates 411, the insert plates 411 move apart and insert into the clamping groove 441.

[0035] The metal block 45 is prismatic, with one edge designed to contact the surface of the hose body 10. A heating mold is fixedly installed in the second groove 42, and the heating module is in contact with the second groove 42. The heating module heats the metal block 45 to simulate heated metal objects in a fire.

[0036] It also includes a water tank 9, with a water pipe fixedly installed at one end of the water tank 9, which is connected to the connector 2. Water is continuously supplied to the hose body 10 through the water tank 9 to simulate the working state of a fire hose.

[0037] The drive unit includes a ball screw 5 that is driven to rotate by a motor, and the ball screw 5 is mounted on the top of the worktable 1. The end of the screw is connected to the motor drive shaft.

[0038] A base 51 is fixedly mounted on the sliding balls of the ball screw 5. A motor-driven roller 52 is fixedly mounted on the base 51. The outer surface of the grinder 4 contacts the roller 52. A protrusion 47 is provided on the outer side of the grinder 4, which blocks the roller 52. The rotation of the roller 52 drives the grinder 4 to rotate, and the operation of the ball screw 5 drives the grinder 4 to reciprocate left and right.

[0039] The system consists of a workbench 1, a connecting nozzle 2, an outer clamp 3, a grinder 4, a ball screw 5, and a cartilage support 6. The cartilage support 6 supports the hose body 10, ensuring that the outer wall of the hose sample 10 maintains uniform tension during friction, improving friction consistency and reducing testing errors. The grinder 4 contains floor stones 44, metal blocks 45, and stone granules 46 to increase the number of testing scenarios and simulate the wear and tear on the fire hose from different objects, forming a variety of tests and avoiding overly simplistic friction patterns. This improves the testing effect.

[0040] A rectangular frame is formed by vertical plates 7 and horizontal plates 8. Multiple sliders 83 slide within this frame, arranged in pairs. A trigger mechanism is formed by a tension sensing unit 84 and a steel wire 85. The movement of the sliders 83 causes the steel wire 85 to move closer to the water hose sample 10. The presence or absence of a reading from the tension sensing unit 84 indicates whether the steel wire 85 is in contact with the water hose sample 10. This allows for the estimation of the slider 83's displacement distance and further calculation of the degree of wear. This method replaces manual visual inspection of wear, making detection more convenient and faster.

[0041] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A device for testing the abrasion resistance of fire hoses, for testing the hose body (10), characterized in that: The device includes a workbench (1), with symmetrically arranged docking nozzles (2) at both ends of the top of the workbench (1). A slide rail (11) is provided on the top of the workbench (1), and a bracket (21) is slidably fitted on the slide rail (11). The bracket (21) is connected to the bottom of the docking nozzle (2). An inner ring (22) is pivotally connected to the inner end of the docking nozzle (2). A flange is provided on the inner side of the inner ring (22), and the flange extends to the port of the water hose body (10). An outer hoop (3) is fitted on the port of the water hose body (10). The outer hoop (3) and the flange of the inner ring (22) are tightly fitted to clamp the port of the water hose body (10). A grinder (4) is provided above the workbench (1), and the water hose body (10) passes through the grinder (4) horizontally in the horizontal direction. The grinder (4) consists of two semi-circular rings. The two semi-circular rings have three grooves: groove 1 (41), groove 2 (42), and groove 3 (43). Groove 1 (41) contains floor stones (44), groove 2 (42) contains metal blocks (45), and groove 3 (43) contains stone granules (46). The floor stones (44) are used to simulate rough ground, the metal blocks (45) are used to simulate metal edges, and the stone granules (46) are used to simulate stones. The surfaces of the floor stones (44), metal blocks (45), and stone granules (46) can all contact the surface of the water hose body (10). The bottom of the workbench (1) is provided with a drive unit. Two semi-circular rings are spliced ​​together to form a ring that wraps around the water hose body (10). The drive unit drives the polisher (4) to rotate rapidly, and at the same time, the drive unit drives the polisher (4) to move back and forth left and right. Multiple cartilage supports (6) are placed inside the water hose body (10) along the length direction. The multiple cartilage supports (6) are connected by connecting rods (61). The cartilage supports (6) are snowflake-shaped with multiple branches. The ends of the multiple branches have arc-shaped strips that fit against the inner wall of the water hose body (10).

2. The abrasion resistance testing device for fire hoses according to claim 1, characterized in that: It also includes a detection component, which includes two vertical plates (7) and two horizontal plates (8). There is a gap between the two vertical plates (7) that can accommodate the diameter of the water hose body (10). The two horizontal plates (8) are arranged symmetrically between the two vertical plates (7). The horizontal plates (8) are slidably fitted with sliders (83). A steel wire (85) is connected between the upper and lower sliders (83). A tension sensing unit (84) is installed on the opposite side of the sliders (83).

3. The abrasion resistance testing device for fire hoses according to claim 2, characterized in that: The end of the vertical plate (7) is fixedly connected to the end of the horizontal plate (8) by screws. The horizontal plate (8) has a through groove (81) along its length. The slider (83) is slidably fitted in the through groove (81). A motor-driven screw (82) is pivotally connected in the through groove (81). The screw (82) threaded through the slider (83). The surface of the horizontal plate (8) is engraved with scales along the length of the through groove (81).

4. The abrasion resistance testing device for fire hoses according to claim 3, characterized in that: The working end of the tension sensing unit (84) is equipped with a hook, and the end of the steel wire (85) is connected to a hanging ring. The hook hooks onto the hanging ring, and the steel wire (85) is in a state of just tension.

5. The abrasion resistance testing device for fire hoses according to claim 4, characterized in that: The groove (41) is provided with two insert plates (411). The lower end of the insert plate (411) is hinged to the inner wall of the groove (41). The two insert plates (411) are connected to a spring (412) on the side away from each other. The end of the spring (412) away from the insert plate (411) is connected to the inner wall of the groove (41). The bottom of the floor stone (44) is arc-shaped, and the bottom of the floor stone (44) is provided with a clamping groove (441) that matches the insert plate (411).

6. The abrasion resistance testing device for fire hoses according to claim 5, characterized in that: The metal block (45) is prismatic, with one edge used to contact the surface of the water hose body (10). A heating mold is installed in the second groove (42), and the heating module contacts the second groove (42).

7. The abrasion resistance testing device for fire hoses according to claim 6, characterized in that: It also includes a water tank (9), with a water pipe connected to the end of the water tank (9), and the water pipe is connected to the connector (2).

8. The abrasion resistance testing device for fire hoses according to claim 7, characterized in that: The drive unit includes a ball screw (5), which is located on the top of the worktable (1). A base (51) is connected to the sliding ball of the ball screw (5). A motor-driven roller (52) is installed on the base (51). The outer surface of the grinder (4) contacts the roller (52). A protrusion (47) is provided on the outer side of the grinder (4), which blocks the roller (52).

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