Cable fireproof coating crack resistance testing machine

Abstract

The utility model relates to the technical field of fireproof coating crack resistance testing, and provides a cable fireproof coating crack resistance testing machine which comprises a rack, a rotating roller, a stretching mechanism, an environment simulation mechanism and a fixing mechanism, the rotating roller is rotationally arranged in the rack, the stretching mechanism is arranged in the rack and used for stretching a cable, the environment simulation mechanism is arranged in the rack and used for simulating the cable, and the fixing mechanism is arranged in the rack and used for fixing the cable. The stretching mechanism is arranged on the rack and used for changing the environment around the fireproof coating, the fixing mechanism is arranged on the rack and used for fixing one end of a cable, and the stretching mechanism comprises a winding ring, a baffle ring, a clamping assembly and a rotating assembly. The problem that the test efficiency of the crack resistance of the fireproof coating is reduced due to the fact that the change of the fireproof coating is difficult to be obviously observed by testers in a short time and the test mode needs a long time in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire retardant coating crack resistance testing, in particular to a cable fire retardant coating crack resistance testing machine. Background Art

[0002] Cable fire-retardant coatings are generally composed of tert-acrylic emulsion water-based materials with the addition of various fire retardants, plasticizers, etc. When the coating is exposed to fire, it can generate a uniform and dense sponge-like foam insulation layer, which can effectively inhibit and block the spread and spread of flames, and play a protective role for wires and cables.

[0003] Poor crack resistance will cause cracks in the coating, affecting the protective effect of the cable and destroying the protection integrity, making it unable to effectively prevent the spread of fire in the event of a fire. Therefore, it is necessary to conduct a crack resistance test on the cable fire retardant coating. The existing test method is usually to apply the protective coating on the test piece and observe the crack resistance of the fire retardant coating by simulating changes in the test piece's environment. However, the changes in the fire retardant coating are difficult for the test personnel to observe clearly in a short period of time. Therefore, this test method takes a long time, which reduces the test efficiency of the fire retardant coating crack resistance. Utility Model Content

[0004] The utility model proposes a cable fire retardant coating crack resistance testing machine, which solves the problem in related technologies that changes in fire retardant coatings are difficult to be clearly observed by test personnel in a short period of time, and this test method requires a long time, which reduces the test efficiency of the fire retardant coating crack resistance.

[0005] The technical solution of the utility model is as follows: a cable fire retardant coating crack resistance testing machine, comprising: a frame, a rotating roller, a stretching mechanism, an environmental simulation mechanism and a fixing mechanism;

[0006] The rotating roller is rotatably arranged in the frame;

[0007] The stretching mechanism is arranged in the frame and is used to stretch the cable;

[0008] The environmental simulation mechanism is arranged in the frame and is used to change the environment around the fire retardant coating;

[0009] The fixing mechanism is arranged on the frame and is used to fix one end of the cable.

[0010] Preferably, the stretching mechanism comprises: a winding ring, a retaining ring, a clamping assembly and a rotating assembly;

[0011] The winding ring is fixedly connected to the rotating roller;

[0012] There are two retaining rings, both of which are fixedly connected to the winding ring;

[0013] The clamping assembly is provided on the rotating roller and is used to fix the other end of the cable;

[0014] The rotating assembly is arranged on the frame and is used for driving the rotating roller to rotate.

[0015] Furthermore, the clamping assembly includes: a clamping plate, a friction block and a spring;

[0016] There are two clamping plates, and a groove is provided on the rotating roller. Both clamping plates are rotatably connected in the groove;

[0017] There are multiple friction blocks, and each of the clamping plates is fixedly connected to multiple friction blocks;

[0018] There are multiple springs, and each clamping plate is fixedly connected to two springs.

[0019] Furthermore, the rotating assembly includes: a rotating gear, a driving gear and a first motor;

[0020] The rotating gear is fixedly connected to the rotating roller;

[0021] The driving gear is rotatably arranged on the frame, and the driving gear is engaged with the rotating gear;

[0022] The first motor is arranged on the frame, and the output end of the first motor is fixedly connected to the driving gear.

[0023] As a further solution of the present application, the environmental simulation mechanism includes: a delivery pipe, a heating wire, a spray assembly and a blowing assembly;

[0024] The delivery pipe is fixedly connected to the frame;

[0025] The heating wire is wound around the delivery pipe;

[0026] The spray assembly is arranged in the frame and is used to spray the fire retardant coating;

[0027] The blowing assembly is arranged in the frame and is used for blowing the fire retardant coating.

[0028] As a further solution of the present application, the spray assembly includes: a water tank, a water pump, a spray pipe and a spray head;

[0029] The water tank is fixedly connected to the frame;

[0030] The water pump is arranged on the water tank, and the input end of the water pump is connected to the water tank;

[0031] The spray pipe is arranged on the frame, and the output end of the water pump is connected to the spray pipe;

[0032] There are multiple spray heads, and all of the multiple spray heads are connected to the spray pipe.

[0033] On the basis of the above solution, the blowing assembly includes: a fixing plate and a blower;

[0034] The fixing plate is fixedly connected in the frame;

[0035] There are two fans, both of which are arranged on a fixed plate, and the output ends of the two fans are both directed towards the winding ring.

[0036] Further on the basis of the above solution, the fixing mechanism includes: a fixing block and a first electric cylinder;

[0037] The fixed block is rotatably connected to the frame;

[0038] The first electric cylinder is arranged on the frame, and the output end of the first electric cylinder passes through the frame and contacts the fixed block.

[0039] As a preferred technical solution of the present application, a rotating seat is fixedly connected to the frame, and the fixed block is rotatably connected in the rotating seat.

[0040] As a preferred technical solution of the present application, a pull plate is fixedly connected to each of the two clamping plates, and a groove is formed between the pull plate and the clamping plate.

[0041] The working principle and beneficial effects of the utility model are as follows:

[0042] 1. In the utility model, through the cooperation between the fixing mechanism and the stretching mechanism, one end of the cable coated with fire retardant paint is fixed on the frame, and the other end is fixed on the rotating roller. The cable is stretched by the rotation of the rotating roller. The rotating roller drives the cable to rotate forward ten times and then counterclockwise ten times, so that the crack resistance of the fire retardant paint can be tested.

[0043] 2. In the present invention, by setting up an environmental simulation mechanism, it is convenient to change the environment in which the fire retardant coating is located, and to test the effects of environmental changes on the fire retardant coating.

[0044] 3. In the utility model, through the coordination among the frame, rotating roller, stretching mechanism, environmental simulation mechanism and fixing mechanism, it is convenient to quickly test the crack resistance of the fire retardant coating applied on the cable, thereby improving the efficiency of the fire retardant coating crack resistance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0047] Figure 2 This is a schematic structural diagram of the utility model from another angle;

[0048] Figure 3 This is a schematic structural diagram of the cross-section of the rotating roller, winding ring and retaining ring of the utility model;

[0049] Figure 4 For this utility model Figure 3 Schematic diagram of the locally enlarged structure at point A in the middle.

[0050] In the figure: 1. Frame; 2. Rotating roller; 3. Winding ring; 4. Retaining ring; 5. Clamping plate; 6. Friction block; 7. Spring; 8. Rotating gear; 9. Driving gear; 10. First motor; 11. Delivery pipe; 12. Heating wire; 13. Water tank; 14. Water pump; 15. Spray pipe; 16. Spray head; 17. Fixed plate; 18. Fan; 19. Fixed block; 20. First electric cylinder; 21. Rotating seat; 22. Pull plate. DETAILED DESCRIPTION

[0051] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] like Figures 1 to 4 As shown, this embodiment proposes a cable fire retardant coating crack resistance testing machine, including: a frame 1, a rotating roller 2, a stretching mechanism, an environmental simulation mechanism and a fixing mechanism. The rotating roller 2 is rotatably arranged in the frame 1. Through the cooperation between the frame 1, the rotating roller 2, the stretching mechanism, the environmental simulation mechanism and the fixing mechanism, it is convenient to test the crack resistance of the fire retardant coating applied on the cable quickly, thereby improving the efficiency of the fire retardant coating crack resistance test.

[0053] like Figures 1 to 3As shown, the stretching mechanism is arranged in the frame 1 for stretching the cable, and the stretching mechanism includes: a winding ring 3, a retaining ring 4, a clamping assembly and a rotating assembly. The winding ring 3 is fixedly connected to the rotating roller 2. There are two retaining rings 4, and the two retaining rings 4 are fixedly connected to the winding ring 3. The clamping assembly is arranged on the rotating roller 2 for fixing the other end of the cable. The rotating assembly is arranged on the frame 1 for driving the rotating roller 2 to rotate. The clamping assembly includes: a clamping plate 5, a friction block 6 and a spring 7. The two clamping plates 5 are fixedly connected with a pulling plate 22, and a groove is formed between the pulling plate 22 and the clamping plate 5. There are two clamping plates 5, and a groove is opened on the rotating roller 2. The two clamping plates 5 are rotatably connected in the groove. There are multiple friction blocks 6, and each clamping plate 5 is fixedly connected with multiple There are multiple friction blocks 6 and springs 7, and each clamping plate 5 is fixedly connected to two springs 7. The rotating assembly includes: a rotating gear 8, a driving gear 9 and a first motor 10. The rotating gear 8 is fixedly connected to the rotating roller 2, and the driving gear 9 is rotatably set on the frame 1. The driving gear 9 is engaged with the rotating gear 8. The first motor 10 is set on the frame 1, and the output end of the first motor 10 is fixedly connected to the driving gear 9. Specifically, one end of the cable is placed between the two clamping plates 5, and one end of the cable is clamped between the two clamping plates 5 through the support of the spring 7. The friction force of the friction block 6 increases the clamping force of the cable, and then the driving gear 9 and the rotating gear are driven to rotate by the first motor 10, thereby driving the rotating roller 2 and the winding ring 3 to rotate, thereby stretching the cable.

[0054] like Figure 1~Figure 2As shown, the environmental simulation mechanism is arranged in the frame 1, which is used to change the environment around the fire retardant coating. The environmental simulation mechanism includes: a delivery pipe 11, a heating wire 12, a spray assembly and a blowing assembly. The delivery pipe 11 is fixedly connected to the frame 1, and the heating wire 12 is wound around the delivery pipe 11. The spray assembly is arranged in the frame 1 for spraying the fire retardant coating. The blowing assembly is arranged in the frame 1 for blowing the fire retardant coating. The spray assembly includes: a water tank 13, a water pump 14, a spray pipe 15 and a spray head 16. The water tank 13 is fixedly connected to the frame 1, the water pump 14 is arranged on the water tank 13, the input end of the water pump 14 is connected to the water tank 13, the spray pipe 15 is arranged on the frame 1, and the output end of the water pump 14 is connected to the water tank 13. It is connected to the spray pipe 15, and a plurality of spray heads 16 are provided. The plurality of spray heads 16 are all connected to the spray pipe 15. The blowing assembly includes: a fixed plate 17 and a fan 18. The fixed plate 17 is fixedly connected to the frame 1. There are two fans 18. The two fans 18 are both arranged on the fixed plate 17. The output ends of the two fans 18 are both facing the winding ring 3. Specifically, the delivery pipe 11 is heated by the heating wire 12, so that the cable is heated and dried when passing through the delivery pipe 11. The fire retardant coating is blown and cooled by the fan 18 arranged on the fixed plate 17, the water in the water tank 13 is pumped out by the water pump 14, and the water is sprayed on the fire retardant coating through the spray pipe 15 and the spray head 16, so as to adjust the humidity of the fire retardant coating.

[0055] like Figure 1 As shown, a fixing mechanism is provided on the frame 1 for fixing one end of the cable, and the fixing mechanism includes: a fixing block 19 and a first electric cylinder 20. A rotating seat 21 is fixedly connected to the frame 1, and the fixing block 19 is rotatably connected in the rotating seat 21. The fixed block 19 is rotatably connected to the frame 1. The first electric cylinder 20 is provided on the frame 1, and the output end of the first electric cylinder 20 passes through the frame 1 and contacts the fixing block 19. Specifically, the first electric cylinder 20 extends out to press against one end of the fixing block 19. After one end of the fixing block 19 is pressed against, the fixing block 19 rotates around the rotating seat 21, so that the other end of the fixing block 19 clamps one end of the cable on the frame 1.

[0056] In this embodiment, when testing the crack resistance of the fire retardant coating, the fire retardant coating is applied to a section of cable, and then the first electric cylinder 20 extends out to press against one end of the fixed block 19. After one end of the fixed block 19 is pressed, the fixed block 19 rotates around the rotating seat 21, so that the other end of the fixed block 19 clamps one end of the cable on the frame 1, and the other end of the cable is inserted into the groove on the rotating roller 2 through the conveying pipe 11, and one end of the cable is placed between the two clamping plates 5. With the support of the spring 7, one end of the cable is clamped between the two clamping plates 5, and the friction of the friction block 6 increases the friction of the cable. The clamping force of the cable is tested, and then the driving gear 9 and the rotating gear are driven to rotate by the first motor 10, thereby driving the rotating roller 2 and the winding ring 3 to rotate, thereby stretching the cable, and heating the conveying pipe 11 through the heating wire 12, so that the cable is heated and dried when passing through the conveying pipe 11, and the fire retardant coating is blown and cooled by the fan 18 arranged on the fixed plate 17, and the water in the water tank 13 is pumped out by the water pump 14, and the water is sprayed on the fire retardant coating through the spray pipe 15 and the spray head 16, so as to adjust the humidity of the fire retardant coating, thereby testing the crack resistance of the fire retardant coating under various environments.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Cable fire retardant coating crack resistance testing machine, characterized by, include: Rack (1); A rotating roller (2), the rotating roller (2) being rotatably arranged in the frame (1); A stretching mechanism, the stretching mechanism being arranged in the frame (1) and being used for stretching the cable; An environmental simulation mechanism, the environmental simulation mechanism being arranged in the frame (1) and being used to change the environment around the fire retardant coating; A fixing mechanism is provided on the frame (1) and is used to fix one end of the cable.

2. The cable fire retardant coating crack resistance testing machine according to claim 1, characterized in that: The stretching mechanism comprises: A winding ring (3), the winding ring (3) being fixedly connected to the rotating roller (2); A retaining ring (4), wherein two retaining rings (4) are provided, and both retaining rings (4) are fixedly connected to the winding ring (3); A clamping assembly, the clamping assembly being arranged on the rotating roller (2) and being used to fix the other end of the cable; A rotating assembly is provided on the frame (1) and is used to drive the rotating roller (2) to rotate.

3. The cable fire retardant coating crack resistance testing machine according to claim 2, characterized in that: The clamping assembly comprises: A clamping plate (5), wherein two clamping plates (5) are provided, a groove is provided on the rotating roller (2), and the two clamping plates (5) are rotatably connected in the groove; Friction blocks (6), wherein a plurality of friction blocks (6) are provided, and each of the clamping plates (5) is fixedly connected to a plurality of the friction blocks (6); A spring (7), wherein a plurality of springs (7) are provided, and two springs (7) are fixedly connected to each clamping plate (5).

4. The cable fire retardant coating crack resistance testing machine according to claim 3, characterized in that: The rotating assembly comprises: A rotating gear (8), the rotating gear (8) being fixedly connected to the rotating roller (2); a driving gear (9), the driving gear (9) being rotatably disposed on the frame (1), the driving gear (9) being meshed with the rotating gear (8); A first motor (10), wherein the first motor (10) is arranged on the frame (1), and an output end of the first motor (10) is fixedly connected to the driving gear (9).

5. The cable fire retardant coating crack resistance testing machine according to claim 4, characterized in that: The environmental simulation mechanism comprises: A delivery pipe (11), wherein the delivery pipe (11) is fixedly connected to the frame (1); A heating wire (12), the heating wire (12) being wound around the delivery tube (11); A spray assembly, the spray assembly being arranged in the frame (1) and being used for spraying the fire retardant coating; A blowing assembly is provided in the frame (1) and is used for blowing air on the fire retardant coating.

6. The cable fire retardant coating crack resistance testing machine according to claim 5, characterized in that: The spray assembly comprises: A water tank (13), the water tank (13) being fixedly connected to the frame (1); a water pump (14), the water pump (14) being arranged on the water tank (13), and an input end of the water pump (14) being in communication with the water tank (13); A spray pipe (15), the spray pipe (15) is arranged on the frame (1), and the output end of the water pump (14) is connected to the spray pipe (15); A spray head (16), wherein a plurality of the spray heads (16) are provided, and the plurality of the spray heads (16) are all connected to the spray pipe (15).

7. The cable fire retardant coating crack resistance testing machine according to claim 6, characterized in that: The blowing assembly comprises: A fixing plate (17), the fixing plate (17) being fixedly connected in the frame (1); A fan (18), wherein two fans (18) are provided, and both fans (18) are arranged on the fixing plate (17), and the output ends of the two fans (18) are both oriented toward the winding ring (3).

8. The cable fire retardant coating crack resistance testing machine according to claim 7, characterized in that: The fixing mechanism comprises: A fixed block (19), the fixed block (19) being rotatably connected to the frame (1); A first electric cylinder (20), wherein the first electric cylinder (20) is arranged on the frame (1), and an output end of the first electric cylinder (20) passes through the frame (1) and contacts the fixed block (19).

9. The cable fire retardant coating crack resistance testing machine according to claim 8, characterized in that: A rotating seat (21) is fixedly connected to the frame (1), and the fixed block (19) is rotatably connected in the rotating seat (21).

10. The cable fire retardant coating crack resistance testing machine according to claim 9, characterized in that: A pull plate (22) is fixedly connected to each of the two clamping plates (5), and a groove is formed between the pull plate (22) and the clamping plates (5).

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