Wear resistance testing device for fire hose production

Abstract

The invention discloses a wear resistance testing device for fire hose production, and belongs to the technical field of fire hose production, the wear resistance testing device comprises a base, the top of the base is provided with a testing mechanism and two groups of positioning mechanisms, and the positioning mechanisms are used for clamping and tightening a fire hose; the testing mechanism comprises a cooling mechanism, a driving mechanism, a linkage mechanism, a cooling box, a moving box and a friction plate, the moving box is slidably mounted in the cooling box, a heat conducting plate is fixedly mounted at the bottom of the friction plate through bolts, and a guide plate is fixedly mounted at the bottom of the heat conducting plate. One-way friction detection of the friction plate relative to the fire hose can be realized through the arranged testing mechanism, so that the detection result is more practical, and the friction plate can be cooled through the arranged cooling mechanism when the wear resistance of the fire hose is detected. And through the linkage mechanism, the cooling effect on the friction plate can be improved during high-speed friction detection, and the situation that the temperature of the friction plate is increased, and the detection result is affected is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of fire hose production, in particular to a wear resistance testing device for fire hose production. 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 composite 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] When the fire hose is actually used, it needs to be dragged on the ground. Therefore, the fire hose needs to be tested for wear resistance after production. Only the fire hose that passes the test can be used.

[0004] Most of the current wear-resistance testing devices use friction plates to repeatedly wipe the fire hose to achieve the test. However, in actual use, friction is mostly in one direction. The current testing devices are difficult to simulate the actual use scenario of the fire hose, making the test results inaccurate.

[0005] And because the friction plate and the fire hose generate heat during the friction process, this heat may cause thermal expansion of the fire hose and the friction plate. This expansion may change the contact area and pressure distribution between them, thereby affecting the measurement results of the wear resistance. Therefore, we propose a wear resistance test device for fire hose production to solve this problem. Summary of the invention

[0006] The object of the present invention is to provide a wear resistance testing device for fire hose production to solve the problems raised in the above background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A wear resistance test device for fire hose production, comprising: a base, a testing mechanism and two sets of positioning mechanisms are arranged on the top of the base, the positioning mechanisms are used to clamp and tighten the fire hose, the testing mechanism comprises: a cooling mechanism, a driving mechanism, a linkage mechanism, a cooling box, a moving box and a friction plate, the moving box is slidably installed in the cooling box, a heat conducting plate is fixedly installed on the bottom of the friction plate by bolts, a guide plate is fixedly installed on the bottom of the heat conducting plate, guide rods are fixedly installed on both sides of the top of the moving box, and the guide plate is slidably sleeved on the outside of the two guide rods;

[0009] The driving mechanism comprises: a driving shaft, a sector gear and a rack, the rack is fixedly mounted on the bottom of the moving box, the sector gear is meshed with the rack, the sector gear is fixedly mounted on the outside of the driving shaft, and the driving shaft is rotatably mounted in the cooling box;

[0010] The cooling mechanism includes: a piston plate, a water inlet pipe, a water outlet pipe and a cooling pipe, the water inlet pipe and the water outlet pipe are respectively connected to the bottom and the top of the moving box, the cooling pipe is slidably connected to the inside of the water outlet pipe, and the cooling pipe runs through the inside of the heat conduction plate, the piston plate is slidably and sealedly connected to the moving box, and a fixing rod is fixedly installed on one side of the piston plate, one end of the fixing rod is fixedly connected to the inner wall of the cooling box, a first one-way valve is arranged in the water inlet pipe, and a second one-way valve is arranged in the water outlet pipe.

[0011] Preferably, a refrigerator is fixedly installed in the cooling box, and the linkage mechanism includes: a rotating frame, a fixed frame, a varistor and a conical disk. The rotating frame is fixedly connected to the rear end of the driving shaft, and a sliding frame is slidably sleeved on the outer side of the rotating frame. A counterweight plate is fixedly installed on the front side of the sliding frame, and a connecting spring is fixedly installed on the side of the two counterweight plates away from each other, and the other end of the connecting spring is fixedly connected to the rotating frame. A universal ball seat is fixedly installed on the rear side of the sliding frame, and a ball is arranged in the universal ball seat;

[0012] A conical groove is provided on the front side of the conical disk, and the ball is movably abutted against the inner wall of the conical groove. The varistor is fixedly connected between the conical disk and the fixed frame. A compression spring and a guide column are fixedly installed on the rear side of the conical disk. The other end of the compression spring is fixedly connected to the fixed frame, and the fixed frame is slidably sleeved on the outer side of the guide column. The fixed frame is fixedly installed on the rear side of the cooling box, and the varistor is connected in series with the refrigerator.

[0013] Preferably, guide columns are fixedly installed on the front and rear sides of the guide plate, mounting rods are fixedly installed on the front and rear sides of the top of the cooling box, and guide plates are fixedly installed on the tops of the mounting rods. Guide grooves are provided on the sides of the two guide plates close to each other, and the two guide columns are movably inserted in the corresponding guide grooves respectively, and the guide grooves include: a starting section, an ascending section, a translation section, a descending section and a returning section.

[0014] Preferably, the positioning mechanism includes: a fixed plate, a translation plate and a lifting frame, the fixed plate is fixedly installed on the top of the base, and a first cylinder is fixedly installed on one side of the fixed plate, a first pressure sensor is fixedly installed on the output end of the first cylinder, one side of the first pressure sensor is fixedly installed on one side of the translation plate, a horizontal plate is fixedly installed on the top of the translation plate, a second cylinder is fixedly installed on the top of the horizontal plate, a second pressure sensor is fixedly installed on the output end of the second cylinder, the bottom of the second pressure sensor is fixedly connected to the lifting frame, and a clamping mechanism is provided on one side of the lifting frame.

[0015] Preferably, the clamping mechanism comprises: an inner cylinder, an outer cylinder, a driving disk, an electric push rod, a third pressure sensor and a plurality of clamping plates, the outer cylinder is fixedly mounted on the outer side of the inner cylinder, a plurality of sliding holes are provided on the outer side of the inner cylinder, a plurality of clamping plates are slidably connected in the corresponding sliding holes, and a limiting strip is integrally formed on one side of the plurality of clamping plates close to each other, a plurality of limiting grooves are provided on the outer side of the driving disk, the limiting strip is slidably connected in the corresponding limiting grooves, the driving disk is fixedly mounted on one side of the third pressure sensor, and the output end of the electric push rod is fixedly mounted on the other side of the third pressure sensor;

[0016] The inner cylinder and the electric push rod are respectively fixedly mounted on both sides of the lifting frame.

[0017] Preferably, horizontal rails are fixedly installed on both sides of the top of the base, a guide seat is fixedly installed on the bottom of the translation plate, the guide seat sliding sleeve is arranged on the outer side of the corresponding horizontal rail, and vertical rails are fixedly installed on one side of the two lifting frames, and the horizontal plate sliding sleeve is arranged on the outer side of the corresponding vertical rail.

[0018] Preferably, a controller and a drive motor are fixedly installed on the front side of the cooling box, and the output shaft of the drive motor is fixedly connected to the front end of the drive shaft;

[0019] A first temperature sensor is fixedly installed inside the heat conducting plate, and the controller is connected to the first temperature sensor and the refrigerator signal. When the first temperature sensor detects that the temperature exceeds a preset value, the refrigerator is started through the controller;

[0020] A second temperature sensor and a partition are fixedly installed in the cooling box. A communication hole is opened on one side of the partition. An electric control valve is arranged in the communication hole.

[0021] Preferably, square plates are fixedly installed on the front and rear sides of the moving box, square holes are fixedly installed on the front and rear sides of the cooling box, the square plates are slidably connected in the corresponding square holes, and a return spring is fixedly installed on the right side of the square plate, and the right end of the return spring is fixedly connected to the side wall of the square hole.

[0022] The beneficial effects of the present invention are:

[0023] 1. In the present invention, a wear resistance performance testing device for fire hose production is described. The two ends of the fire hose are inserted into the gap between the inner cylinder and the outer cylinder, and then the electric push rod is started to drive the third pressure sensor and the driving disk to move horizontally. The driving disk drives the multiple clamping plates to move away from each other through the cooperation of the limit groove and the multiple limit strips, so that the multiple clamping plates abut against the inside of the fire hose and clamp it. When the clamping plates are clamped in place, the clamping force is monitored by the third pressure sensor. When the clamping force standard is reached, the controller controls the electric push rod to stop feeding, and drives the two translation plates to move away from each other by starting the two first electric push rods, thereby driving the two inner cylinders to move away from each other, so as to achieve the tightening of the fire hose, and the tightening force is monitored by the first pressure sensor. The second electric push rod is started to drive the two lifting frames to perform synchronous lifting and lowering movements, so as to adjust the height of the fire hose to facilitate wear resistance testing.

[0024] 2. In the present invention, the wear resistance performance testing device for fire hose production described above drives the driving shaft and the fan gear to rotate clockwise by starting the driving motor. The fan gear drives the moving box to move right by meshing with the rack, and compresses the return spring by the square plate. When the fan gear is out of mesh with the rack, the moving box is reset by the return spring, so that the moving box can be driven to move back and forth left and right under the cooperation of the fan gear and the return spring. When the moving box moves to the right, the guide column is driven to move right by the guide plate. The guide column enters the ascending section from the starting section, and then enters the descending section along the translation section. When the guide column moves in the translation section, the friction plate contacts the fire hose, so as to perform wear resistance detection. When the moving box moves to the left, it drives the guide column to move left along the homing section, and in this process, the friction plate is out of contact with the fire hose, so that the friction plate can realize the unidirectional friction detection of the fire hose;

[0025] 3. In the present invention, in the wear resistance test device for fire hose production, the piston plate and the fixed rod are fixed to each other when the movable box moves left and right, so that the piston plate will not be displaced, so that the cavity volume on the left side of the piston plate in the movable box is alternately reduced and increased. When the cavity volume increases, negative pressure is formed at the water inlet pipe, and the cooling water pre-stored in the cooling box is sucked into the movable box. When the cavity volume decreases, the water in the cavity flows into the cooling pipe along the water outlet pipe, and then flows back to the right side of the partition. When the cooling water flows through the cooling pipe, it can take away the heat of the heat conducting plate and the friction plate, thereby preventing the friction plate from heating up and affecting the test results;

[0026] 4. In the present invention, the wear resistance test device for fire hose production monitors the temperature of the friction plate and the heat conducting plate through the first temperature sensor. When the temperature exceeds the preset value, the controller controls the refrigerator to start, thereby cooling the cooling water in the cooling box to improve the cooling effect on the friction plate;

[0027] 5. In the present invention, the wear resistance test device for fire hose production can control the power of the driving motor through the controller, so as to control the rotation speed of the driving shaft to adjust the moving speed of the friction plate, so as to realize friction detection at different speeds according to needs. At the same time, the driving shaft will drive the rotating frame to rotate synchronously while rotating, and drive the sliding frame and the counterweight plate to perform circular motion. The counterweight plates move away from each other under the action of centrifugal force, and drive the balls to perform synchronous motion through the universal ball seat. The balls drive the conical disk to move backward through the cooperation of the conical groove and squeeze the varistor. The resistance of the varistor decreases after being squeezed. Since the varistor is connected in series with the refrigerator, the power of the refrigerator is increased, so that the cooling speed of the cooling water can be improved when performing higher-speed friction detection, thereby further avoiding the influence of the friction plate heating on the detection;

[0028] 6. In the present invention, the wear resistance test device for fire hose production uses a second temperature sensor to monitor the temperature of the cooling wastewater in the reflux cooling box. When the temperature drops to the initial state, the controller opens the electric control valve, so that the cooling wastewater on the right side of the partition flows back to the left side through the connecting hole to achieve re-cooling, thereby achieving a circulating cooling effect;

[0029] 7. In the present invention, the wear resistance testing device for fire hose production can realize one-way friction detection of the friction plate relative to the fire hose through the set testing mechanism, so that the detection result is more in line with reality. The cooling mechanism can cool the friction plate when the fire hose is subjected to wear resistance testing, and the linkage mechanism can enhance the cooling effect of the friction plate when conducting high-speed friction testing, thereby preventing the temperature of the friction plate from rising and affecting the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a wear resistance testing device for fire hose production proposed by the present invention;

[0031] Figure 2 This is a schematic cross-sectional view of a wear resistance testing device for fire hose production proposed by the present invention;

[0032] Figure 3 for Figure 2 A partial enlarged view of the

[0033] Figure 4 for Figure 2 Another partial enlarged view in;

[0034] Figure 5 for Figure 2 A partial enlarged view of part A;

[0035] Figure 6 A schematic side cross-sectional view of a wear resistance testing device for fire hose production proposed by the present invention;

[0036] Figure 7 for Figure 6 A partial enlarged view of part B;

[0037] Figure 8 It is a three-dimensional structural schematic diagram of the linkage mechanism proposed by the present invention;

[0038] Fig. 9 This is a schematic diagram of the explosive three-dimensional structure of the clamped drum proposed by the present invention;

[0039] Fig.10 A schematic diagram of the three-dimensional structure of the positioning mechanism proposed by the present invention;

[0040] Fig.11 A schematic diagram of the three-dimensional structure of the guide plate and the guide column proposed in the present invention;

[0041] Fig.12 A front view of the guide plate and guide column proposed in the present invention.

[0042] In the figure: 1, base; 2, cooling box; 3, moving box; 301, piston plate; 302, fixing rod; 303, water inlet pipe; 304, first one-way valve; 305, second one-way valve; 306, water outlet pipe; 307, cooling pipe; 308, square plate; 309, reset spring; 4, friction plate; 401, heat conduction plate; 402, first temperature sensor; 403, guide plate; 404, guide rod; 5, guide plate; 501, guide groove; 5011, starting section; 5012, rising section; 5013, homing section; 5014, translation section; 5015, descending section; 502, mounting rod; 503, guide column; 6, inner cylinder; 601, outer cylinder; 602, sliding hole; 7, electric push rod; 701, third pressure sensor; 702, drive disk; 702 1. Limiting groove; 703. Clamping plate; 8. Lifting frame; 9. Driving motor; 901. Driving shaft; 902. Fan gear; 903. Rack; 10. Refrigerator; 11. Controller; 12. Rotating frame; 1201. Sliding frame; 1202. Counterweight plate; 1203. Connecting spring; 1204. Universal ball seat; 1205. Ball; 1206. Conical disk; 1207. Fixed frame; 1208. Guide column; 1209. Compression spring; 1210. Varistor; 13. Horizontal plate; 14. Translation plate; 15. Guide seat; 16. Fixed plate; 17. Cross rail; 18. Second pressure sensor; 19. First pressure sensor; 20. Vertical rail; 21. First cylinder; 22. Second cylinder; 23. Partition; 24. Electric control valve; 25. Second temperature sensor. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0044] Reference Figure 1 - Fig.12 A wear resistance test device for fire hose production, comprising: a base 1, a test mechanism and two sets of positioning mechanisms are arranged on the top of the base 1, the positioning mechanism is used to clamp and tighten the fire hose, the test mechanism comprises: a cooling mechanism, a driving mechanism, a linkage mechanism, a cooling box 2, a moving box 3 and a friction plate 4, the moving box 3 is slidably installed in the cooling box 2, a heat conducting plate 401 is fixedly installed on the bottom of the friction plate 4 by bolts, a guide plate 403 is fixedly installed on the bottom of the heat conducting plate 401, guide rods 404 are fixedly installed on both sides of the top of the moving box 3, and the guide plate 403 is slidably sleeved on the outer sides of the two guide rods 404;

[0045] The driving mechanism includes: a driving shaft 901, a sector gear 902 and a rack 903, the rack 903 is fixedly mounted on the bottom of the moving box 3, the sector gear 902 is meshed with the rack 903, the sector gear 902 is fixedly mounted on the outside of the driving shaft 901, and the driving shaft 901 is rotatably mounted in the cooling box 2;

[0046] The cooling mechanism includes: a piston plate 301, a water inlet pipe 303, a water outlet pipe 306 and a cooling pipe 307. The water inlet pipe 303 and the water outlet pipe 306 are respectively connected to the bottom and the top of the moving box 3. The cooling pipe 307 is slidably connected to the inside of the water outlet pipe 306, and the cooling pipe 307 runs through the inside of the heat conduction plate 401. The piston plate 301 is slidably and sealingly connected to the moving box 3, and a fixing rod 302 is fixedly installed on one side of the piston plate 301, and one end of the fixing rod 302 is fixedly connected to the inner wall of the cooling box 2. A first one-way valve 304 is arranged in the water inlet pipe 303, and a second one-way valve 305 is arranged in the water outlet pipe 306.

[0047] In this embodiment, a refrigerator 10 is fixedly installed in the cooling box 2, and the linkage mechanism includes: a rotating frame 12, a fixed frame 1207, a varistor 1210 and a conical disk 1206. The rotating frame 12 is fixedly connected to the rear end of the driving shaft 901, and the outer side of the rotating frame 12 is slidably sleeved with a sliding frame 1201, and a counterweight plate 1202 is fixedly installed on the front side of the sliding frame 1201. The two counterweight plates 1202 are fixedly installed on the sides away from each other with connecting springs 1203, and the other end of the connecting spring 1203 is fixedly connected to the rotating frame 12, and a universal ball seat 1204 is fixedly installed on the rear side of the sliding frame 1201, and a ball 1205 is arranged in the universal ball seat 1204;

[0048] A conical groove is provided on the front side of the conical disk 1206, and the ball 1205 is movably abutted against the inner wall of the conical groove. The varistor 1210 is fixedly connected between the conical disk 1206 and the fixed frame 1207. A compression spring 1209 and a guide column 1208 are fixedly installed on the rear side of the conical disk 1206. The other end of the compression spring 1209 is fixedly connected to the fixed frame 1207, and the fixed frame 1207 is slidably sleeved on the outer side of the guide column 1208. The fixed frame 1207 is fixedly installed on the rear side of the cooling box 2, and the varistor 1210 is connected in series with the refrigerator 10.

[0049] In this embodiment, guide columns 503 are fixedly installed on the front and rear sides of the guide plate 403, mounting rods 502 are fixedly installed on the front and rear sides of the top of the cooling box 2, and a guide plate 5 is fixedly installed on the top of the mounting rod 502. Guide grooves 501 are opened on the sides where the two guide plates 5 are close to each other, and the two guide columns 503 are movably inserted in the corresponding guide grooves 501 respectively. The guide grooves 501 include: a starting section 5011, an ascending section 5012, a translation section 5014, a descending section 5015 and a returning section 5013.

[0050] In this embodiment, the positioning mechanism includes: a fixed plate 16, a translation plate 14 and a lifting frame 8. The fixed plate 16 is fixedly installed on the top of the base 1, and a first cylinder 21 is fixedly installed on one side of the fixed plate 16, and a first pressure sensor 19 is fixedly installed on the output end of the first cylinder 21. One side of the first pressure sensor 19 is fixedly installed on one side of the translation plate 14. A horizontal plate 13 is fixedly installed on the top of the translation plate 14, and a second cylinder 22 is fixedly installed on the top of the horizontal plate 13. A second pressure sensor 18 is fixedly installed on the output end of the second cylinder 22, and the bottom of the second pressure sensor 18 is fixedly connected to the lifting frame 8. A clamping mechanism is provided on one side of the lifting frame 8.

[0051] In this embodiment, the clamping mechanism includes: an inner cylinder 6, an outer cylinder 601, a driving disk 702, an electric push rod 7, a third pressure sensor 701 and a plurality of clamping plates 703, the outer cylinder 601 is fixedly mounted on the outer side of the inner cylinder 6, a plurality of sliding holes 602 are provided on the outer side of the inner cylinder 6, a plurality of clamping plates 703 are respectively slidably connected in the corresponding sliding holes 602, and a limiting strip is integrally formed on one side of the plurality of clamping plates 703 close to each other, a plurality of limiting grooves 7021 are provided on the outer side of the driving disk 702, the limiting strip is slidably connected in the corresponding limiting grooves 7021, the driving disk 702 is fixedly mounted on one side of the third pressure sensor 701, and the output end of the electric push rod 7 is fixedly mounted on the other side of the third pressure sensor 701;

[0052] The inner cylinder 6 and the electric push rod 7 are fixedly mounted on both sides of the lifting frame 8 respectively.

[0053] In this embodiment, horizontal rails 17 are fixedly installed on both sides of the top of the base 1, and a guide seat 15 is fixedly installed on the bottom of the translation plate 14. The guide seat 15 is slidably mounted on the outer side of the corresponding horizontal rail 17, and a vertical rail 20 is fixedly installed on one side of the two lifting frames 8, and the horizontal plate 13 is slidably mounted on the outer side of the corresponding vertical rail 20.

[0054] In this embodiment, the controller 11 and the drive motor 9 are fixedly installed on the front side of the cooling box 2, and the output shaft of the drive motor 9 is fixedly connected to the front end of the drive shaft 901;

[0055] A first temperature sensor 402 is fixedly installed inside the heat conducting plate 401, and the controller 11 is connected to the first temperature sensor 402 and the refrigerator 10 by signal. When the first temperature sensor 402 detects that the temperature exceeds a preset value, the refrigerator 10 is started through the controller 11;

[0056] A second temperature sensor 25 and a partition plate 23 are fixedly installed in the cooling box 2. A communication hole is opened on one side of the partition plate 23, and an electric control valve 24 is arranged in the communication hole.

[0057] In this embodiment, square plates 308 are fixedly installed on the front and rear sides of the moving box 3, and square holes are fixedly installed on the front and rear sides of the cooling box 2. The square plates 308 are slidably connected in the corresponding square holes, and a return spring 309 is fixedly installed on the right side of the square plate 308, and the right end of the return spring 309 is fixedly connected to the side wall of the square hole.

[0058] In this embodiment, when in use, the two ends of the fire hose are inserted into the gap between the inner cylinder 6 and the outer cylinder 601, and then the electric push rod 7 is started to drive the third pressure sensor 701 and the driving disk 702 to move horizontally. The driving disk 702 drives the multiple clamping plates 703 to move away from each other through the limit groove 7021 and the multiple limit strips, so that the multiple clamping plates 703 abut against the inside of the fire hose and clamp it. When the clamping plates 703 are clamped in place, the clamping force is monitored by the third pressure sensor 701. When the clamping force standard is reached, the controller 11 controls the electric push rod 7 to stop feeding, and drives the two translation plates 14 to move away from each other by starting the two first electric push rods 7, thereby driving the two inner cylinders 6 to move away from each other, so as to achieve the tightening of the fire hose, and the tightening force is monitored by the first pressure sensor 19, and the second electric push rod 7 is started to drive the two lifting frames 8 to perform synchronous lifting and lowering movements, so as to adjust the height of the fire hose to facilitate wear resistance testing;

[0059] By starting the driving motor 9, the driving shaft 901 and the sector gear 902 are driven to rotate clockwise, and the sector gear 902 drives the moving box 3 to move to the right by meshing with the rack 903, and compresses the return spring 309 through the square plate 308. When the sector gear 902 is out of mesh with the rack 903, the moving box 3 is reset under the action of the return spring 309, so that the moving box 3 can be driven to move back and forth left and right under the cooperation of the sector gear 902 and the return spring 309, and the moving box 3 moves to the right. While moving, the guide column 503 is driven to move rightward through the guide plate 403. The guide column 503 starts to move rightward from the starting section 5011 and enters the ascending section 5012 under the action of inertia, moves upward along the ascending section 5012, and then enters the descending section 5015 along the translation section 5014. When the guide column 503 moves in the translation section 5014, the friction plate 4 contacts the fire hose, thereby performing wear resistance detection. When the moving box 3 moves to the left, it drives the guide column 503 to move leftward along the homing section 5013 (such as Fig.12, the arrow direction is the moving track of the guide column 503 in the guide groove 501), and during this process, the friction plate 4 is out of contact with the fire hose, so that the friction plate 4 can detect the unidirectional friction of the fire hose, and the pressure between the friction plate 4 and the fire hose is monitored by the second pressure sensor 18 during the detection process, and the pressure is adjusted by controlling the second cylinder 22 to realize friction detection of different intensities. After the detection is completed, the wear condition of the surface of the fire hose is observed to judge its wear resistance;

[0060] When the movable box 3 moves left and right, the piston plate 301 and the fixing rod 302 are fixed to each other, so that the piston plate 301 will not be displaced, so that the volume of the cavity on the left side of the piston plate 301 in the movable box 3 is alternately reduced and increased. When the volume of the cavity increases, negative pressure is formed at the water inlet pipe 303, and the cooling water pre-stored in the cooling box 2 is sucked into the movable box 3. When the volume of the cavity decreases, the water in the cavity flows along the water outlet pipe 306 into the cooling pipe 307, and then flows back to the right side of the partition 23. When the cooling water flows through the cooling pipe 307, it can take away the heat of the heat conducting plate 401 and the friction plate 4, thereby preventing the friction plate 4 from heating up and affecting the detection result.

[0061] The temperature of the friction plate 4 and the heat conducting plate 401 is monitored by the first temperature sensor 402. When the temperature exceeds a preset value, the controller 11 controls the refrigerator 10 to start, thereby cooling the cooling water in the cooling box 2 to improve the cooling effect on the friction plate 4.

[0062] The power of the driving motor 9 is controlled by the controller 11, so that the rotation speed of the driving shaft 901 can be controlled to adjust the moving speed of the friction plate 4, so that friction detection at different speeds can be realized as needed. At the same time, the rotation of the driving shaft 901 will drive the rotating frame 12 to rotate synchronously, and drive the sliding frame 1201 and the counterweight plate 1202 to perform circular motion. The counterweight plates 1202 move away from each other under the action of centrifugal force, and drive the ball bearings 1205 to perform synchronous motion through the universal ball seat 1204. The ball bearings 1205 drive the conical disk 1206 to move backward through the cooperation of the conical groove, and squeeze the varistor 1210. The resistance of the varistor 1210 decreases after being squeezed. Since the varistor 1210 is connected in series with the refrigerator 10, the power of the refrigerator 10 is increased, so that the cooling speed of the cooling water can be increased when performing higher-speed friction detection, thereby further avoiding the influence of the friction plate 4 heating on the detection.

[0063] The temperature of the cooling waste water in the returning cooling box 2 is monitored by the second temperature sensor 25. When the temperature drops to the initial state, the electric control valve 24 is opened by the controller 11, so that the cooling waste water on the right side of the partition 23 flows back to the left side through the connecting hole to be cooled again, thereby achieving a circulating cooling effect.

[0064] The above is a detailed introduction to a wear resistance testing device for fire hose production provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A wear resistance testing device for fire hose production, characterized in that: include: A base (1), wherein a testing mechanism and two sets of positioning mechanisms are arranged on the top of the base (1), wherein the positioning mechanisms are used to clamp and tighten the fire hose, wherein the testing mechanism comprises: a cooling mechanism, a driving mechanism, a linkage mechanism, a cooling box (2), a moving box (3) and a friction plate (4), wherein the moving box (3) is slidably mounted in the cooling box (2), a heat conducting plate (401) is fixedly mounted on the bottom of the friction plate (4) by bolts, a guide plate (403) is fixedly mounted on the bottom of the heat conducting plate (401), guide rods (404) are fixedly mounted on both sides of the top of the moving box (3), and the guide plates (403) are slidably sleeved on the outsides of the two guide rods (404); The driving mechanism comprises: a driving shaft (901), a sector gear (902) and a rack (903), wherein the rack (903) is fixedly mounted on the bottom of the moving box (3), the sector gear (902) is meshed with the rack (903), the sector gear (902) is fixedly mounted on the outside of the driving shaft (901), and the driving shaft (901) is rotatably mounted in the cooling box (2); The cooling mechanism comprises: a piston plate (301), a water inlet pipe (303), a water outlet pipe (306) and a cooling pipe (307); the water inlet pipe (303) and the water outlet pipe (306) are respectively connected at the bottom and the top of the moving box (3); the cooling pipe (307) is slidably connected to the inside of the water outlet pipe (306), and the cooling pipe (307) runs through the inside of the heat conduction plate (401); the piston plate (301) is slidably sealed and connected to the moving box (3); a fixing rod (302) is fixedly installed on one side of the piston plate (301), and one end of the fixing rod (302) is fixedly connected to the inner wall of the cooling box (2); a first one-way valve (304) is arranged in the water inlet pipe (303), and a second one-way valve (305) is arranged in the water outlet pipe (306).

2. A wear resistance testing device for fire hose production according to claim 1, characterized in that: A refrigerator (10) is fixedly installed in the cooling box (2); the linkage mechanism comprises: a rotating frame (12), a fixed frame (1207), a varistor (1210) and a conical disk (1206); the rotating frame (12) is fixedly connected to the rear end of the driving shaft (901); and a sliding frame (1201) is slidably sleeved on the outer side of the rotating frame (12); a counterweight plate (1202) is fixedly installed on the front side of the sliding frame (1201); a connecting spring (1203) is fixedly installed on the sides of the two counterweight plates (1202) that are away from each other; the other end of the connecting spring (1203) is fixedly connected to the rotating frame (12); a universal ball seat (1204) is fixedly installed on the rear side of the sliding frame (1201); and a ball (1205) is arranged in the universal ball seat (1204); A conical groove is provided on the front side of the conical disk (1206), and the ball (1205) is movably abutted against the inner wall of the conical groove. The varistor (1210) is fixedly connected between the conical disk (1206) and the fixed frame (1207). A compression spring (1209) and a guide column (1208) are fixedly installed on the rear side of the conical disk (1206). The other end of the compression spring (1209) is fixedly connected to the fixed frame (1207), and the fixed frame (1207) is slidably sleeved on the outer side of the guide column (1208). The fixed frame (1207) is fixedly installed on the rear side of the cooling box (2), and the varistor (1210) is connected in series with the refrigerator (10).

3. A wear resistance testing device for fire hose production according to claim 1, characterized in that: Guide columns (503) are fixedly installed on both the front and rear sides of the guide plate (403), and mounting rods (502) are fixedly installed on both the front and rear sides of the top of the cooling box (2). A guide plate (5) is fixedly installed on the top of the mounting rod (502). A guide groove (501) is provided on the side where the two guide plates (5) are close to each other, and the two guide columns (503) are movably inserted in the corresponding guide grooves (501) respectively. The guide groove (501) includes: a starting section (5011), an ascending section (5012), a translation section (5014), a descending section (5015) and a homing section (5013).

4. The wear resistance testing device for fire hose production according to claim 1 is characterized in that: The positioning mechanism comprises: a fixed plate (16), a translation plate (14) and a lifting frame (8); the fixed plate (16) is fixedly mounted on the top of the base (1), and a first cylinder (21) is fixedly mounted on one side of the fixed plate (16); a first pressure sensor (19) is fixedly mounted on the output end of the first cylinder (21); one side of the first pressure sensor (19) is fixedly mounted on one side of the translation plate (14); a horizontal plate (13) is fixedly mounted on the top of the translation plate (14); a second cylinder (22) is fixedly mounted on the top of the horizontal plate (13); a second pressure sensor (18) is fixedly mounted on the output end of the second cylinder (22); the bottom of the second pressure sensor (18) is fixedly connected to the lifting frame (8); and a clamping mechanism is provided on one side of the lifting frame (8).

5. The wear resistance testing device for fire hose production according to claim 1 is characterized in that: The clamping mechanism comprises: an inner cylinder (6), an outer cylinder (601), a driving disk (702), an electric push rod (7), a third pressure sensor (701) and a plurality of clamping plates (703); the outer cylinder (601) is fixedly mounted on the outer side of the inner cylinder (6); a plurality of sliding holes (602) are provided on the outer side of the inner cylinder (6); a plurality of clamping plates (703) are respectively slidably connected in corresponding sliding holes (602); and a limiting strip is integrally formed on the sides of the plurality of clamping plates (703) close to each other; a plurality of limiting grooves (7021) are provided on the outer side of the driving disk (702); the limiting strip is slidably connected in the corresponding limiting grooves (7021); the driving disk (702) is fixedly mounted on one side of the third pressure sensor (701); and the output end of the electric push rod (7) is fixedly mounted on the other side of the third pressure sensor (701); The inner cylinder (6) and the electric push rod (7) are respectively fixedly mounted on both sides of the lifting frame (8).

6. A wear resistance testing device for fire hose production according to claim 4, characterized in that: Both sides of the top of the base (1) are fixedly mounted with transverse rails (17), the bottom of the translation plate (14) is fixedly mounted with a guide seat (15), the guide seat (15) is slidably sleeved on the outer side of the corresponding transverse rail (17), and one side of the two lifting frames (8) is fixedly mounted with a vertical rail (20), the horizontal plate (13) is slidably sleeved on the outer side of the corresponding vertical rail (20).

7. The wear resistance testing device for fire hose production according to claim 1 is characterized in that: A controller (11) and a drive motor (9) are fixedly mounted on the front side of the cooling box (2), and an output shaft of the drive motor (9) is fixedly connected to a front end of the drive shaft (901); A first temperature sensor (402) is fixedly installed inside the heat conducting plate (401), and the controller (11) is connected to the first temperature sensor (402) and the refrigerator (10) by signal, and the refrigerator (10) is started through the controller (11) when the first temperature sensor (402) detects that the temperature exceeds a preset value; A second temperature sensor (25) and a partition (23) are fixedly installed in the cooling box (2); a communication hole is opened on one side of the partition (23); and an electric control valve (24) is arranged in the communication hole.

8. The wear resistance testing device for fire hose production according to claim 1 is characterized in that: The front and rear sides of the moving box (3) are fixedly mounted with square plates (308), the front and rear sides of the cooling box (2) are fixedly mounted with square holes, the square plates (308) are slidably connected in the corresponding square holes, and a return spring (309) is fixedly mounted on the right side of the square plate (308), and the right end of the return spring (309) is fixedly connected to the side wall of the square hole.

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