Device and method for detecting tensile strength of fire hose for fire detection

Abstract

The invention relates to the technical field of fire hose strength detection, in particular to a fire hose tensile strength detection device for fire detection and a method thereof.The fire hose tensile strength detection device comprises a base, a partition plate is integrally formed in the middle of the inner side of the base, a blocking groove is formed in one side of the partition plate, and the interior of the base is divided into a water storage cavity and a dry cavity by the partition plate; and a driving assembly is arranged in the dry cavity, and the top end of the driving assembly is movably connected with an eccentric adjusting assembly. According to the improved device and method for detecting the tensile strength of the fire hose for fire detection, through mutual cooperation of the driving assembly, the eccentric adjusting assembly and the water injection assembly, the tensile property of the fire hose under the conditions of no water injection and water injection can be detected; meanwhile, the detection comprehensiveness can be improved by changing the direction of the tensile force applied to the water hose in the detection process, and the radial extrusion assembly can simulate the situation that the water hose is externally treaded or impacted in actual use, so that the diversity of detection items is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fire hose strength detection, in particular to a fire hose tensile strength detection device and method for fire detection. Background Art

[0002] A fire hose is a flexible pipe used to transport high-pressure water or flame-retardant liquids such as foam. Traditional fire hoses are lined with rubber and covered with a woven linen fabric. Advanced fire hoses are made of polymer materials such as polyurethane. Each end of the fire hose has metal connectors that can be connected to another hose to extend the reach or to a nozzle to increase the pressure of the liquid spray. Existing fire hose tensile strength testing devices mostly use a straight line, which does not effectively simulate the scenarios of actual use, where the stretching direction changes constantly. Therefore, we have developed a fire hose tensile strength testing device for firefighting inspections.

[0003] The existing patent (publication number: CN118067525B) discloses a fire hose tensile strength testing device for fire detection, which relates to the field of fire hose testing technology. The following scheme is proposed, including a mounting frame, and also includes: a moving mechanism, the moving mechanism is mounted on the mounting frame; a water filling mechanism, the water filling mechanism is mounted below the moving mechanism, the water filling mechanism includes two piston water tanks mounted in a mirrored manner; a connecting mechanism, the connecting mechanism is mounted on the top of the moving mechanism; an anti-residue mechanism, the anti-residue mechanism is mounted on the mounting frame; a driving mechanism, the driving mechanism is mounted on one side of the anti-residue mechanism; and a detection mechanism, the detection mechanism is mounted on the anti-residue mechanism; the mounting frame includes two connecting plates, and a U-shaped mounting frame is fixed on the top of the two connecting plates. The invention simulates the use scenario and simultaneously performs a water pressure test and a tensile test on the fire hose, which is more in line with the use scenario and the use standard of the fire hose. The existing technology has the following problems: it can only perform linear stretching on the fire hose, and the detection mode is single, which does not meet the actual conditions of the fire hose under the continuous change of the tensile force direction, resulting in the final tensile test results being too one-sided. Summary of the Invention

[0004] The object of the present invention is to provide a fire hose tensile strength detection device and method for fire detection, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a fire hose tensile strength testing device for fire detection, comprising a base, a partition integrally formed on the inner middle portion of the base, a blocking groove being provided on one side of the partition, the partition dividing the interior of the base into a water storage chamber and a dry chamber, and a driving assembly being provided inside the dry chamber, an eccentric adjustment assembly being movably connected to the top of the driving assembly, a water injection assembly being slidably provided inside the blocking groove, a guide column being fixedly connected to one side of the top surface of the base, a radial extrusion assembly being provided in the middle portion of the top surface of the base, a through hole being provided in the middle portion of the top surface of the base, and a lower connector being provided at the outer edge of the top surface of the through hole;

[0006] The eccentric adjustment assembly includes a hydraulic push rod fixedly connected to one side of the top surface of the base, the top of the hydraulic push rod is fixedly connected to the mounting frame, the middle part of the mounting frame is rotatably connected to the second gear through a connecting shaft, one side of the second gear is meshed with the first gear, the bottom surface of the first gear is fixedly connected to the secondary pulley, the bottom surface of the secondary pulley is integrally formed with a large gear, the bottom surface of the large gear is fixedly connected to the rotating base, the bottom surface of the rotating base is fixedly connected to the adjusting seat, the middle part of the adjusting seat is slidably connected to a trapezoidal slider, the middle part of the trapezoidal slider is threaded with an adjusting screw, one end of the adjusting screw is fixedly connected to an adjusting bevel gear, one side of the adjusting bevel gear is meshed with the first bevel gear, the top surface of the first bevel gear is fixedly connected to the second bevel gear through a connecting shaft, one side of the second bevel gear is meshed with a third bevel gear, the third bevel gear is meshed with a fourth bevel gear, the top surface of the fourth bevel gear passes through the mounting frame through a connecting shaft and is fixedly connected to the speed regulating gear, the third bevel gear is rotatably connected to the inner ring of the gear ring through a connecting shaft, and one side of the gear ring is meshed with the third gear.

[0007] Preferably, the third gear is connected to the second gear through a connecting shaft, the bottom surface of the trapezoidal slider is fixedly connected to a fixed sleeve, the interior of the fixed sleeve is slidably connected to an inner sliding rod, the top of the inner sliding rod is integrally formed with a limiting plate, and a reset spring is fixedly connected between the limiting plate and the inner bottom of the fixed sleeve.

[0008] Preferably, the bottom end of the inner sliding rod is fixedly connected to a connecting seat, the outer ring of the connecting seat is rotatably connected to a rotating seat via a bearing, and the bottom surface of the rotating seat is integrally formed with an upper connecting head.

[0009] Preferably, the driving assembly includes a motor fixedly connected to the inner bottom surface of the dry chamber, the output end of the motor passes through the top surface of the base and is connected to the reciprocating screw, the top end of the reciprocating screw is fixedly connected to a top plate, the top surface of the top plate is integrally formed with an outer cylinder, the inner part of the outer cylinder is slidably connected to an inner rod, the outer surface of the inner rod has two limiting convex strips integrally formed, the top end of the inner rod is fixedly connected to a main pulley, and a transmission structure is formed between the main pulley and the secondary pulley through a transmission belt.

[0010] Preferably, the water injection assembly includes a driven gear meshing with the large gear, the bottom surface of the driven gear is fixedly connected to a rotating column, the middle part of the bottom end of the rotating column is integrally formed with a plum blossom column, the outer side of the plum blossom column is sleeved with a threaded column, the inner ring of the threaded column is provided with a hole, and a spring telescopic rod is fixedly connected in the hole, and one end of the spring telescopic rod close to the central axis of the threaded column is fixedly connected to a limiting protrusion, and the limiting protrusion is in close contact with the outer surface of the plum blossom column.

[0011] Preferably, the outer side of the threaded column is threadedly connected to an arc block, the top surface of the arc block is rotatably connected to a support shaft, the top end of the support shaft is integrally formed with a clutch gear, and a cylindrical gear is provided in the middle of the support shaft.

[0012] Preferably, the bottom surface of the arc block is fixedly connected to a connecting rod, the bottom end of the connecting rod is fixedly connected to a blocking block, one side of the blocking block is fixedly connected to a bottom plate, the top surface of the bottom plate is provided with a support spring, and the top end of the support spring is fixedly connected to a piston plate.

[0013] Preferably, the radial extrusion assembly includes a mounting enclosure fixedly connected to the top surface of the base, a triangular block is integrally formed on the side of the mounting enclosure close to the central axis of the base, the inclined surface of the triangular block is slidably fitted with an extrusion nail, and a limiting push plate is integrally formed in the middle of the extrusion nail, the limiting push plate is slidably connected to the inside of the mounting cavity, and a rebound spring is fixedly connected between the limiting push plate and the inner wall of the mounting cavity, the mounting cavity is opened inside the lifting ring, and beams are integrally formed on both sides of the outer ring of the lifting ring.

[0014] Preferably, there are two crossbeams, one of which is threadedly connected to the reciprocating screw, and the other crossbeam is slidably penetrated by the guide column.

[0015] A method for testing the tensile strength of a fire hose for fire detection uses the above-mentioned fire hose tensile strength testing device for fire detection, comprising the following steps:

[0016] S001: Use ropes to secure both ends of the fire hose that needs to be tensile tested to the upper and lower connectors to complete the initial fixation of the fire hose;

[0017] S002: Start the driving assembly to cooperate with the eccentric adjustment assembly and the water injection assembly to inject water into the fire hose. At the same time, the hydraulic push rod in the eccentric adjustment assembly extends to stretch the fire hose to test the tensile strength of the fire hose.

[0018] S003: After the water filling component is filled with water, it can drive the eccentricity adjustment component to adjust the eccentricity of the top of the fire hose during the rotation process, thereby changing the movement state of the fire hose and the direction of the tension it receives, making the fire hose inspection more comprehensive;

[0019] S004: Remove the tested fire hose from the upper and lower sets of connectors and check whether there is any leakage. If there is no damage or leakage, the fire hose has passed the test.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, the two ends of the fire hose to be tested are respectively fixed on the upper connecting head and the lower connecting head, and then the driving component is started to drive the eccentric adjustment component to rotate, and the hydraulic push rod is started to extend at the same time to test the tensile strength of the fire hose. At this time, the fire hose has not been filled with water. Then, under the continued operation of the eccentric adjustment component, the water injection component will squeeze the water in the water storage chamber into the fire hose. After the fire hose is filled with water, the hydraulic push rod can continuously apply axial tension to the fire hose, thereby performing tensile testing on the fire hose both when it is filled with water and when it is not filled with water, and the testing is more comprehensive.

[0022] In the present invention, the clutch gear at the top of the water injection assembly rises and engages with the speed regulating gear, triggering the eccentric mechanism in the eccentric adjustment assembly to change the direction of the tension on the fire hose. Note that compared with traditional fire hose detection devices, the detection range is wider and the detection items are more comprehensive.

[0023] In the present invention, the driving assembly also drives the radial extrusion assembly to radially extrude the fire hose, thereby simulating the situation in which the fire hose is stepped on or bumped from the outside during actual use, thereby increasing the comprehensiveness of the detection. When the top end of the fire hose revolves with the trapezoidal slider, it will also rub against the inner ring of the lifting ring, thereby testing the wear resistance of the fire hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the front three-dimensional structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the front cross-sectional three-dimensional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of the blocking block of the present invention;

[0027] Figure 4This is a schematic diagram of the front cross-sectional three-dimensional structure of the threaded column of the present invention;

[0028] Figure 5 This is a schematic diagram of a front cross-sectional three-dimensional structure of a radial extrusion assembly of the present invention;

[0029] Figure 6 For the present invention Figure 5 A in the figure is an enlarged schematic diagram of the three-dimensional structure;

[0030] Figure 7 This is a schematic diagram of a partial front view of the three-dimensional structure of the drive assembly of the present invention;

[0031] Figure 8 This is a schematic diagram of the front cross-sectional three-dimensional structure of the eccentric adjustment assembly of the present invention;

[0032] Figure 9 For the present invention Figure 8 A schematic diagram of the enlarged three-dimensional structure at B in FIG.

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of the adjustment seat of the present invention when viewed from above.

[0034] In the figure: 1. Base; 101. Partition; 102. Blocking groove; 2. Driving assembly; 201. Motor; 202. Reciprocating screw; 203. Top plate; 204. Outer cylinder; 205. Inner rod; 206. Limiting ridge; 207. Main pulley; 3. Eccentric adjustment assembly; 301. Hydraulic push rod; 302. Mounting frame; 303. Second gear; 304. First gear; 305. Secondary pulley; 306. Large gear; 307. Rotating base; 308. Adjusting base; 309. Trapezoidal slider; 3010. Adjusting screw; 3011. Fixed sleeve; 3012. Inner sliding rod; 3013. Return spring; 3014. Connecting base; 3015. Rotating base; 3016. Adjusting bevel gear; 3017. First bevel gear; 3018. Second bevel gear; 301 9. Third bevel gear; 3020. Fourth bevel gear; 3021. Speed regulating gear; 3022. Ring gear; 3023. Third gear; 4. Water injection assembly; 401. Driven gear; 402. Rotating column; 403. Plum blossom column; 404. Threaded column; 405. Spring telescopic rod; 406. Limiting protrusion; 407. Arc block; 408. Support shaft; 409. Blocking block; 4010. Bottom plate; 4011. Support spring; 4012. Piston plate; 4013. Connecting rod; 4014. Cylindrical gear; 4015. Clutch gear; 5. Radial extrusion assembly; 501. Crossbeam; 502. Lifting ring; 503. Mounting cavity; 504. Rebound spring; 505. Limiting push plate; 506. Extrusion pin; 507. Mounting enclosure; 508. Triangular block; 6. Guide column. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 technical personnel in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figures 1 to 10 The present invention provides a technical solution: a fire hose tensile strength testing device for fire detection, comprising a base 1, a partition 101 integrally formed in the middle of the inner side of the base 1, a sealing groove 102 is opened on one side of the partition 101, the partition 101 divides the interior of the base 1 into a water storage chamber and a dry chamber, and a driving component 2 is provided inside the dry chamber, the top of the driving component 2 is movably connected to an eccentric adjustment component 3, a water injection component 4 is slidably provided inside the sealing groove 102, a guide column 6 is fixedly connected to one side of the top surface of the base 1, a radial extrusion component 5 is provided in the middle of the top surface of the base 1, a through hole is opened in the middle of the top surface of the base 1, and a lower connecting head is provided at the outer edge of the top surface of the through hole.

[0037] In this embodiment, Figure 1 、 Figure 2 and Figures 8 to 10As shown, the eccentric adjustment assembly 3 includes a hydraulic push rod 301 fixedly connected to one side of the top surface of the base 1, the top of the hydraulic push rod 301 is fixedly connected to the mounting frame 302, the middle part of the mounting frame 302 is rotatably connected to the second gear 303 through a connecting shaft, one side of the second gear 303 is meshed with a first gear 304, the bottom surface of the first gear 304 is fixedly connected to the secondary pulley 305, the bottom surface of the secondary pulley 305 is integrally formed with a large gear 306, the bottom surface of the large gear 306 is fixedly connected to a rotating base 307, the bottom surface of the rotating base 307 is fixedly connected to an adjustment base 308, the middle part of the adjustment base 308 is slidably connected to a trapezoidal slider 309, the middle part of the trapezoidal slider 309 is threaded with an adjusting screw 3010, and the adjusting screw 3 One end of 010 is fixedly connected to an adjusting bevel gear 3016, one side of the adjusting bevel gear 3016 is meshed with a first bevel gear 3017, the top surface of the first bevel gear 3017 is fixedly connected to the second bevel gear 3018 through a connecting shaft, one side of the second bevel gear 3018 is meshed with a third bevel gear 3019, the third bevel gear 3019 is meshed with a fourth bevel gear 3020, the top surface of the fourth bevel gear 3020 passes through the mounting frame 302 and is fixedly connected to the speed regulating gear 3021 through a connecting shaft, the third bevel gear 3019 is rotatably connected to the inner ring of the ring gear 3022 through a connecting shaft, one side of the ring gear 3022 is meshed with a third gear 3023, and the third gear 3023 is connected to the second gear 303 through a connecting shaft;The secondary pulley 305 is driven to rotate by the main pulley 207 and the transmission belt in the driving assembly 2. When the secondary pulley 305 rotates, it drives the large gear 306 and the first gear 304 connected thereto to rotate synchronously. The large gear 306 drives the adjustment seat 308 below to rotate through the rotating base 307, and the first gear 304 drives the second gear 303 meshing with it to rotate. The second gear 303 uses the connecting shaft in the middle of the top surface to drive the third gear 3023 to rotate. The third gear 3023 drives the gear ring 3022 on one side to rotate, and the gear ring 3022 drives the third bevel gear of the inner ring. The bevel gear 3019 rotates orbitally, and the third bevel gear 3019 will synchronously drive the second bevel gear 3018 and the fourth bevel gear 3020 meshing with it to rotate around their respective corresponding connecting shafts. At this time, the second bevel gear 3018, the third bevel gear 3019 and the fourth bevel gear 3020 are relatively stationary. At the same time, the second bevel gear 3018 passes through the first gear 304 and is connected to the first bevel gear 3017 through the connecting shaft. Therefore, the second bevel gear 3018 also drives the first bevel gear 3017 to rotate synchronously. The adjusting bevel gear 3016 is on the joint seat 308, so the adjusting bevel gear 3016 will rotate with the adjusting seat 308. At this time, the adjusting bevel gear 3016 and the first bevel gear 3017 are also relatively stationary, and the adjusting bevel gear 3016 will not rotate on its own, and will not drive the adjusting screw 3010 to rotate on its own, thereby changing the position of the trapezoidal slider 309. In the initial state, the trapezoidal slider 309 is located just above the lower connector. At this time, the fire hose maintains a linear stretch, and with the extension of the hydraulic push rod 301, the fire hose can be stretched linearly. If the speed regulating gear 3021 rotates on its own, it will pass through the connecting rod 3021. The connecting shaft drives the fourth bevel gear 3020 below to rotate. This rotation drives the meshing third bevel gear 3019 to rotate. The third bevel gear 3019 then rotates while orbiting with the ring gear 3022. The rotation of the third bevel gear 3019 drives the second bevel gear 3018 to rotate. The rotation of the second bevel gear 3018 drives the first bevel gear 3017 connected to it via the connecting shaft. The first bevel gear 3017 then drives the meshing adjustment bevel gear 3016 to rotate. The adjustment bevel gear 3016 then drives the adjustment screw 3010 to rotate.

[0038] In this embodiment, Figure 9 and Figure 10As shown, the bottom surface of the trapezoidal slider 309 is fixedly connected to a fixed sleeve 3011, the interior of the fixed sleeve 3011 is slidably connected to an inner sliding rod 3012, the top of the inner sliding rod 3012 is integrally formed with a limiting piece, and a return spring 3013 is fixedly connected between the limiting piece and the inner bottom of the fixed sleeve 3011, the bottom end of the inner sliding rod 3012 is fixedly connected to a connecting seat 3014, and the outer ring of the connecting seat 3014 is rotatably connected to a rotating seat 3015 through a bearing. The bottom surface of the rotating seat 3015 is integrally formed with an upper connecting head; when the adjusting screw 3010 rotates, it drives the trapezoidal slider 309 to slide along the adjusting seat 308, and the trapezoidal slider 309 drives the fixed sleeve 3011 below to move synchronously, so that the fixed sleeve 3011 moves away from or close to the central axis of the large gear 306. When the fixed sleeve 3011 moves, it drives the inner sliding rod 3012 inside to move synchronously, and the inner sliding rod 3012 drives the connecting seat 3014 below to move When the lever 3014 is lowered, the inner sliding rod 3012 is pulled downward along the inside of the fixed sleeve 3011, and the limit piece at the top of the inner sliding rod 3012 compresses the reset spring 3013 to compensate for the increased distance between the trapezoidal slider 309 and the lower connecting head.

[0039] In this embodiment, Figure 1 、 Figure 2 and Figure 7As shown, the drive assembly 2 includes a motor 201 fixedly connected to the bottom surface of the inner side of the dry chamber, the output end of the motor 201 passes through the top surface of the base 1 and is connected to the reciprocating screw 202, the top of the reciprocating screw 202 is fixedly connected to the top plate 203, the top surface of the top plate 203 is integrally formed with an outer cylinder 204, the inner surface of the outer cylinder 204 is slidably connected to the inner rod 205, the outer surface of the inner rod 205 is integrally formed with two limiting convex strips 206, the top of the inner rod 205 is fixedly connected to the main pulley 207, and a transmission structure is formed between the main pulley 207 and the secondary pulley 305 through a transmission belt; the motor 201 is started to drive the reciprocating screw 202 at the output end to rotate, and when the reciprocating screw 202 rotates, it drives the reciprocating screw 202 The top plate 203 at the top rotates, and the top plate 203 drives the outer cylinder 204 on the top surface to rotate. The contour of the opening at the top of the outer cylinder 204 is consistent with the contour of the cross section of the inner rod 205 and the limiting ridge 206. Therefore, when the outer cylinder 204 rotates, it can drive the inner rod 205 to rotate synchronously. The inner rod 205 drives the main pulley 207 at the top to rotate. The main pulley 207 drives the secondary pulley 305 to rotate through the transmission belt, thereby making the eccentric adjustment component 3 operate. It should be noted that the middle part of the top surface of the main pulley 207 is rotatably connected to the mounting frame 302 through a connecting shaft. When the hydraulic push rod 301 is extended or retracted, it can synchronously drive the main pulley 207 to rise and fall, and always keep the drive component 2 able to drive the eccentric adjustment component 3 to operate.

[0040] In this embodiment, Figure 1 、 Figure 3 and Figure 4As shown, the water injection assembly 4 includes a driven gear 401 meshing with the large gear 306, the bottom surface of the driven gear 401 is fixedly connected to a rotating column 402, and a plum blossom column 403 is integrally formed in the middle of the bottom end of the rotating column 402. A threaded column 404 is sleeved on the outer side of the plum blossom column 403, and a hole is opened in the inner ring of the threaded column 404, and a spring telescopic rod 405 is fixedly connected in the hole. One end of the spring telescopic rod 405 close to the central axis of the threaded column 404 is fixedly connected to a limiting protrusion 406, and the limiting protrusion 406 is in close contact with the outer surface of the plum blossom column 403. 4 is threadedly connected to an arc block 407, the top surface of the arc block 407 is rotatably connected to a support shaft 408, the top of the support shaft 408 is integrally formed with a clutch gear 4015, and the middle of the support shaft 408 is provided with a cylindrical gear 4014, the bottom surface of the arc block 407 is fixedly connected to a connecting rod 4013, the bottom end of the connecting rod 4013 is fixedly connected to a blocking block 409, one side of the blocking block 409 is fixedly connected to a bottom plate 4010, the top surface of the bottom plate 4010 is provided with a support spring 4011, the top of the support spring 4011 is fixedly connected to a piston plate 4012;When the large gear 306 rotates, it drives the driven gear 401 meshing with it to rotate, and when the driven gear 401 rotates, it drives the rotating column 402 to rotate, and the plum blossom column 403 at the bottom end of the rotating column 402 also rotates with the rotating column 402. The bottom end of the plum blossom column 403 is rotatably connected to the top surface of the base 1, and when the plum blossom column 403 rotates, it drives the threaded column 404 to rotate through the limiting protrusion 406 and the spring telescopic rod 405. When the threaded column 404 rotates, the thread on its outer surface drives the arc block 407 to move along the axis of the threaded column 404. Here, taking the rising of the arc block 407 as an example, the arc block 407 rises and drives the cylindrical gear 401 through the support shaft 408. 4 and the clutch gear 4015 rise synchronously. Since the cylindrical gear 4014 is at a greater height, it always keeps meshing with the large gear 306 during the lifting process, thereby driving the clutch gear 4015 to rotate all the time. When the clutch gear 4015 rises to contact with the speed regulating gear 3021, it drives the speed regulating gear 3021 to rotate. Due to the influence of the transmission ratio, the speed of the speed regulating gear 3021 will change, and the speed regulating gear 3021 will rotate and drive the fourth bevel gear 3020 to rotate. At this time, the fourth bevel gear 3020 no longer remains relatively stationary with the third bevel gear 3019, causing the third bevel gear 3019 to rotate, and finally driving the adjusting screw through the rotation of the other bevel gears. The rod 3010 rotates, thereby driving the trapezoidal slider 309 to move, so that the eccentricity of the top of the fire hose changes while it revolves around the central axis of the large gear 306. When the entire movement process is viewed from a top-down perspective, the top of the fire hose exhibits a vortex motion. In addition, when the arc block 407 rises, it also drives the blocking block 409 to rise through the connecting rod 4013 at the bottom. The rising blocking block 409 drives the bottom plate 4010 to move up synchronously. The bottom plate 4010 drives the piston plate 4012 to move up through several supporting springs 4011 on the top surface. When the piston plate 4012 moves up, the water in the water storage chamber of the base 1 is squeezed into the fire hose, automatically filling the fire hose with water. When the fire hose After the piston plate 4012 is filled with water, the water above the piston plate 4012 can no longer be compressed. The bottom plate 4010 then continues to move upward, compressing the support spring 4011 and raising the clutch gear 4015 until it engages with the speed regulating gear 3021. When the support spring 4011 is also compressed to its limit, the arc block 407 can no longer move upward, but the plum blossom column 403 continues to rotate. Due to the increased load between the threads on the outer surface of the threaded column 404 and the arc block 407, the plum blossom column 403 continuously presses the limiting protrusion 406 into the hole on the inner wall of the threaded column 404, compressing the spring telescopic rod 405, preventing further power transmission between the plum blossom column 403 and the threaded column 404.

[0041] In this embodiment, Figure 1 、 Figure 5 and Figure 6As shown, the radial extrusion assembly 5 includes a mounting enclosure 507 fixedly connected to the top surface of the base 1, and a triangular block 508 is integrally formed on the side of the mounting enclosure 507 close to the central axis of the base 1, and the inclined surface of the triangular block 508 is slidably fitted with an extrusion nail 506, and a limited push plate 505 is integrally formed in the middle of the extrusion nail 506, and the limited push plate 505 is slidably connected to the inside of the mounting cavity 503, and a rebound spring 504 is fixedly connected between the limited push plate 505 and the inner wall of the mounting cavity 503, and the mounting cavity 503 is opened inside the lifting ring 502, and beams 501 are integrally formed on both sides of the outer ring of the lifting ring 502. There are two beams 501, one of which is threadedly connected to the reciprocating screw 202, and the other beam 501 is slidably penetrated by the guide column 6; when the reciprocating screw 202 in the drive assembly 2 rotates, the lifting ring 502 can be driven to rise and fall through the beam 501, and when the lifting ring 502 is During the lifting process, the squeezing pin 506 continuously contacts the triangular block 508 and is squeezed by the triangular block 508 in the direction close to the fire hose. During this process, the limit push plate 505 continuously compresses the rebound spring 504 and then resets. When the squeezing pin 506 moves toward the fire hose, it can radially squeeze the outer surface of the fire hose, simulating the situation that the fire hose is subjected to external impact during actual use, further increasing the diversity of fire hose detection. In addition, when the lifting ring 502 rises to the upper half of the reciprocating screw 202, and the top of the fire hose moves to a position away from the central axis of the large gear 306 with the trapezoidal slider 309, the fire hose at this time will continue to rotate under the drive of the adjusting seat 308, and rub against the inner ring of the lifting ring 502 during the rotation, so as to test the wear resistance of the fire hose. Because in actual use, the fire hose needs to be dragged on the ground, it needs to have good wear resistance.

[0042] A method for testing the tensile strength of a fire hose for fire detection, using the above-mentioned fire hose tensile strength testing device for fire detection, comprises the following steps:

[0043] S001: Use ropes to secure both ends of the fire hose that needs to be tensile tested to the upper and lower connectors to complete the initial fixation of the fire hose;

[0044] S002: Start the driving assembly 2 to cooperate with the eccentric adjustment assembly 3 and the water injection assembly 4 to inject water into the fire hose. At the same time, the hydraulic push rod 301 in the eccentric adjustment assembly 3 extends to stretch the fire hose to test the tensile strength of the fire hose.

[0045] S003: After the water filling component 4 is filled with water, it can drive the eccentricity adjustment component 3 to adjust the eccentricity of the top of the fire hose during the rotation process, thereby changing the movement state of the fire hose and the direction of the tension it receives, making the fire hose inspection more comprehensive;

[0046] S004: Remove the tested fire hose from the upper and lower sets of connectors and check whether there is any leakage. If there is no damage or leakage, the fire hose has passed the test.

[0047] The use method and advantages of the present invention: When the fire hose tensile strength detection device and method are used, the working process is as follows:

[0048] First, fix the two ends of the fire hose to be tested on the upper connector and the lower connector respectively, then start the driving component 2 to drive the eccentric adjustment component 3 to rotate, and at the same time start the hydraulic push rod 301 to extend to test the tensile strength of the fire hose. Note that the fire hose has not been filled with water at this time. Then, under the continued operation of the eccentric adjustment component 3, the water injection component 4 will squeeze the water in the water storage chamber into the fire hose, and the clutch gear 4015 at the top of the water injection component 4 rises and meshes with the speed regulating gear 3021, triggering the eccentric mechanism in the eccentric adjustment component 3 to change the fire hose. Regarding the direction of the tension on the hose, please note that after the fire hose is filled with water, the hydraulic push rod 301 can continuously apply axial tension to the fire hose, thereby performing tensile testing on the fire hose both when it is filled with water and when it is not. In addition, the drive component 2 will also drive the radial extrusion component 5 to radially extrude the fire hose, simulating the external trampling or bumping of the fire hose during actual use, thereby increasing the comprehensiveness of the test. When the top of the fire hose revolves with the trapezoidal slider 309, it will also rub against the inner ring of the lifting ring 502, thereby testing the wear resistance of the fire hose.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire hose tensile strength testing device for fire detection, comprising a base (1), characterized in that: A partition (101) is integrally formed in the middle of the inner side of the base (1), and a sealing groove (102) is provided on one side of the partition (101). The partition (101) divides the interior of the base (1) into a water storage chamber and a dry chamber, and a driving component (2) is provided inside the dry chamber. The top of the driving component (2) is movably connected to an eccentric adjustment component (3), and a water injection component (4) is slidably provided inside the sealing groove (102). A guide column (6) is fixedly connected to one side of the top surface of the base (1), and a radial extrusion component (5) is provided in the middle of the top surface of the base (1). A through hole is provided in the middle of the top surface of the base (1), and a lower connector is provided on the outer edge of the top surface of the through hole; The eccentric adjustment assembly (3) comprises a hydraulic push rod (301) fixedly connected to one side of the top surface of the base (1); the top end of the hydraulic push rod (301) is fixedly connected to the mounting frame (302); the middle part of the mounting frame (302) is rotatably connected to a second gear (303) via a connecting shaft; one side of the second gear (303) is meshed with a first gear (304); the bottom surface of the first gear (304) is fixedly connected to a secondary pulley (305); the bottom surface of the secondary pulley (305) is integrally formed with a large gear (306); the bottom surface of the large gear (306) is fixedly connected to a rotating base (307); the bottom surface of the rotating base (307) is fixedly connected to an adjustment base (308); the middle part of the adjustment base (308) is slidably connected to a trapezoidal slider (309); the middle part of the trapezoidal slider (309) is threaded through An adjusting screw (3010) is passed through the adjusting screw (3010), one end of which is fixedly connected to an adjusting bevel gear (3016), one side of which is meshed with a first bevel gear (3017), the top surface of which is fixedly connected to a second bevel gear (3018) via a connecting shaft, one side of which is meshed with a third bevel gear (3019), the third bevel gear (3019) being meshed with a fourth bevel gear (3020), the top surface of which is passed through the mounting frame (302) via a connecting shaft and fixedly connected to a speed regulating gear (3021), the third bevel gear (3019) being rotatably connected to the inner ring of a gear ring (3022) via a connecting shaft, and one side of which is meshed with a third gear (3023).

2. A fire hose tensile strength testing device for fire detection according to claim 1, characterized in that: The third gear (3023) is connected to the second gear (303) via a connecting shaft. The bottom surface of the trapezoidal slider (309) is fixedly connected to a fixed sleeve (3011). The interior of the fixed sleeve (3011) is slidably connected to an inner sliding rod (3012). A limiting piece is integrally formed at the top end of the inner sliding rod (3012), and a reset spring (3013) is fixedly connected between the limiting piece and the inner bottom of the fixed sleeve (3011).

3. A fire hose tensile strength testing device for fire detection according to claim 2, characterized in that: The bottom end of the inner sliding rod (3012) is fixedly connected to a connecting seat (3014), the outer ring of the connecting seat (3014) is rotatably connected to a rotating seat (3015) via a bearing, and the bottom surface of the rotating seat (3015) is integrally formed with an upper connecting head.

4. A fire hose tensile strength testing device for fire detection according to claim 1, characterized in that: The driving assembly (2) comprises a motor (201) fixedly connected to the inner bottom surface of the dry chamber, the output end of the motor (201) passes through the top surface of the base (1) and is connected to the reciprocating screw (202), the top end of the reciprocating screw (202) is fixedly connected to a top plate (203), the top surface of the top plate (203) is integrally formed with an outer cylinder (204), the interior of the outer cylinder (204) is slidably connected to an inner rod (205), the outer surface of the inner rod (205) is integrally formed with two limiting convex strips (206), the top end of the inner rod (205) is fixedly connected to a main pulley (207), and a transmission structure is formed between the main pulley (207) and the secondary pulley (305) through a transmission belt.

5. The fire hose tensile strength testing device for fire detection according to claim 1, characterized in that: The water injection assembly (4) comprises a driven gear (401) meshed with a large gear (306); a rotating column (402) is fixedly connected to the bottom surface of the driven gear (401); a plum blossom column (403) is integrally formed in the middle of the bottom end of the rotating column (402); a threaded column (404) is sleeved on the outer side of the plum blossom column (403); a hole is formed in the inner ring of the threaded column (404); and a spring telescopic rod (405) is fixedly connected in the hole; one end of the spring telescopic rod (405) close to the central axis of the threaded column (404) is fixedly connected to a limiting protrusion (406); and the limiting protrusion (406) is in close contact with the outer surface of the plum blossom column (403).

6. A fire hose tensile strength testing device for fire detection according to claim 5, characterized in that: The outer side of the threaded column (404) is threadedly connected to an arc block (407), the top surface of the arc block (407) is rotatably connected to a support shaft (408), the top end of the support shaft (408) is integrally formed with a clutch gear (4015), and the middle part of the support shaft (408) is provided with a cylindrical gear (4014).

7. A fire hose tensile strength testing device for fire detection according to claim 6, characterized in that: The bottom surface of the arc block (407) is fixedly connected to a connecting rod (4013), the bottom end of the connecting rod (4013) is fixedly connected to a blocking block (409), one side of the blocking block (409) is fixedly connected to a bottom plate (4010), the top surface of the bottom plate (4010) is provided with a supporting spring (4011), and the top end of the supporting spring (4011) is fixedly connected to a piston plate (4012).

8. The fire hose tensile strength testing device for fire detection according to claim 1, characterized in that: The radial extrusion assembly (5) comprises an installation enclosure (507) fixedly connected to the top surface of the base (1); a triangular block (508) is integrally formed on one side of the installation enclosure (507) close to the central axis of the base (1); an extrusion pin (506) is slidably fitted on the inclined surface of the triangular block (508); a limiting push plate (505) is integrally formed in the middle of the extrusion pin (506); the limiting push plate (505) is slidably connected to the inside of the installation cavity (503); and a rebound spring (504) is fixedly connected between the limiting push plate (505) and the inner wall of the installation cavity (503); the installation cavity (503) is opened inside the lifting ring (502); and beams (501) are integrally formed on both sides of the outer ring of the lifting ring (502).

9. A fire hose tensile strength testing device for fire detection according to claim 8, characterized in that: There are two cross beams (501), one of which is threadedly connected to the reciprocating screw (202), and the other cross beam (501) is slidably penetrated by the guide column (6).

10. A method for testing the tensile strength of a fire hose for fire detection, using the fire hose tensile strength testing device for fire detection according to any one of claims 1 to 9, characterized in that: The following steps are involved: S001: Use ropes to secure both ends of the fire hose that needs to be tensile tested to the upper and lower connectors to complete the initial fixation of the fire hose; S002: The driving assembly (2) is started to cooperate with the eccentric adjustment assembly (3) and the water injection assembly (4) to inject water into the fire hose. At the same time, the hydraulic push rod (301) in the eccentric adjustment assembly (3) is extended to stretch the fire hose to test the tensile strength of the fire hose. S003: After the water injection component (4) is completed, it can drive the eccentricity adjustment component (3) to adjust the eccentricity of the top of the fire hose during the rotation process, thereby changing the movement state of the fire hose and the direction of the tension it receives, making the fire hose detection more comprehensive; S004: Remove the tested fire hose from the upper and lower sets of connectors and check whether there is any leakage. If there is no damage or leakage, the fire hose has passed the test.

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