Bending degree detection device for mineral insulated fireproof cable production

Abstract

The invention relates to the technical field of mineral insulated fireproof cables, in particular to a bending degree detection device for mineral insulated fireproof cable production, which comprises a detection support, a first fixing plate, a bending assembly, a limiting plate, a friction roller and the like, the detection support is fixedly connected with two first fixing plates. The two first fixing plates are jointly and fixedly connected with a limiting plate. The limiting plate is provided with a plurality of limiting grooves used for placing mineral insulated fireproof cables. The two first fixing plates are jointly provided with a friction roller used for conducting friction on the mineral insulation fireproof cable. And a bending assembly for bending the mineral insulated fireproof cable at different angles is arranged between the two first fixing plates. According to the invention, the extracted mineral insulated fireproof cable is wound and fixed on the device, the integrity of the cable is not damaged, the original performance and flexibility are maintained, and the bending condition in actual use is simulated.

Description

Technical Field

[0001] The invention relates to the technical field of mineral insulated fireproof cables, in particular to a bending degree detection device for producing mineral insulated fireproof cables. Background Art

[0002] In the production and application of mineral insulated fireproof cables, because these cables are usually used in places with extremely high requirements for fire protection and safety, such as high-rise buildings, subway systems, nuclear power plants, etc., they must be able to maintain the integrity of the circuit in the event of a fire, to ensure the normal operation of personnel evacuation and emergency services, so ensuring their quality and performance is a crucial link. Traditional detection methods, such as cutting tests, can provide certain bending data, but this method requires the mineral insulated fireproof cable to be cut into small sections for testing, which not only destroys the continuity and integrity of the mineral insulated fireproof cable, but also may cause the mineral insulated fireproof cable after the test to be unable to be used again, resulting in material waste. Secondly, the cutting test may cause irreversible damage to the mineral insulated fireproof cable, such as damage to the internal structure, which will affect the bending detection of the mineral insulated fireproof cable, and due to the limitations of the test sample, this method cannot fully evaluate the bending performance of the entire mineral insulated fireproof cable, especially when the mineral insulated fireproof cable is bent and rubbed. Summary of the invention

[0003] In order to overcome the disadvantages of the existing method of cutting the mineral insulated fire resistant cable into small sections for testing, which destroys the continuity and integrity of the mineral insulated fire resistant cable and causes irreversible damage to the mineral insulated fire resistant cable, such as damage to the internal structure, which affects the bending test of the mineral insulated fire resistant cable, and the inability to comprehensively evaluate the bending performance of the entire mineral insulated fire resistant cable when the mineral insulated fire resistant cable is bent and rubbed due to the limitations of the test samples, the present invention provides a bending test device for the production of mineral insulated fire resistant cables.

[0004] The technical solution of the present invention is: a bending degree detection device for the production of mineral insulated fire-resistant cables, comprising a detection support and a first fixed plate; two first fixed plates are fixedly connected to the detection support; it also comprises a bending assembly, a limiting plate, a friction roller, a fixed moving block and a fixed assembly; the two first fixed plates are commonly fixedly connected to the limiting plate; a plurality of limiting grooves for placing mineral insulated fire-resistant cables are provided on the limiting plates; the two first fixed plates are commonly provided with a friction roller for rubbing the mineral insulated fire-resistant cables; a bending assembly for performing different bending angles on the mineral insulated fire-resistant cables is provided between the two first fixed plates; a plurality of fixed moving blocks for fixing and pulling and rubbing the mineral insulated fire-resistant cables are provided on the bending assembly; a fixed assembly for fixing the bending assembly is provided between the two first fixed plates.

[0005] More preferably, the fixing assembly includes a fixing bar, a rotating motor and a third rotating shaft; a rotating motor is arranged on the first fixing plate located on the right side; the output end of the rotating motor is fixedly connected to the friction roller; two first fixing plates are jointly provided with two third rotating shafts; two fixing bars for fixing the two ends of the mineral insulated fire resistant cable are fixedly connected to the third rotating shaft located on the rear side, and the two fixing bars are respectively located at the left and right ends of the third rotating shaft on the rear side.

[0006] More preferably, the bending assembly includes a fixed frame and a fixed disk; a plurality of fixed frames are fixedly connected to each third rotating shaft; the fixed frames on the front and rear sides are staggered; a first slide groove is provided on each fixed frame; a fixed disk is slidably connected to the first slide groove; a plurality of annular expansion slide grooves are provided on the fixed disk; a moving bar is slidably connected to each expansion slide groove; an airbag is provided on the fixed disk, and the airbag is connected to the air pump; two second slide grooves are provided on each fixed frame; a fixed moving block is slidably connected to each second slide groove.

[0007] More preferably, the friction roller is provided with a plurality of friction blocks made of different materials, and each friction block corresponds to the position of the limiting groove.

[0008] More preferably, the surface of each moving bar is smooth.

[0009] More preferably, fixed leaves are fixedly connected to the three moving bars located on the lower side of the fixed plate.

[0010] More preferably, the fixed movable block consists of a first slider, a rotating shaft, a fixed seat, a second sliding groove, a sliding block, a fixed block and a second rotating shaft; the first slider is located in the second sliding groove; the first slider is rotatably connected to the rotating shaft; the fixed seat is fixedly connected to the rotating shaft; the fixed block is fixedly connected to the fixed seat; the fixed seat is provided with a second sliding groove, and the second sliding groove is provided with a slider; the slider is rotatably connected to the second rotating shaft; the sliding block is fixedly connected to the second rotating shaft.

[0011] More preferably, the fixed bar consists of a first rotating shaft, a fixed rotating plate, a first sliding block, a fixed clamping block and a first sliding groove; the first rotating shaft is rotatably connected to the fixed bar; the fixed rotating plate and the fixed clamping block are fixedly connected to the first rotating shaft; the fixed rotating plate is provided with a first sliding groove; and the first sliding block is slidably connected to the first sliding groove.

[0012] More preferably, it also includes a second slider; a motor is arranged on each third rotating shaft; a movable groove is opened on each first fixed plate; a second slider is slidably connected in each movable groove; two second sliders are rotatably connected together with a friction roller for rubbing the mineral insulated fire-resistant cable; a rotating motor is fixedly connected to the second slider on the right side; and the output end of the rotating motor is fixedly connected to the friction roller.

[0013] More preferably, it also includes a second fixed plate, a second sliding block, a driving member and a rack; the second fixed plate is fixedly connected to the third rotating shaft; the second fixed plate is provided with a third sliding groove; the second sliding block is slidably connected in the third sliding groove; the driving member is fixedly connected to the second sliding block; the rack is fixedly connected to the output end of the driving member; each fixed plate is fixedly connected to a gear; and all gears are meshed with the rack.

[0014] Beneficial effects: The present invention wraps and fixes the extracted mineral insulated fireproof cable on the present invention without destroying the integrity of the cable, maintaining the original performance and flexibility, and simulating the bending conditions in actual use;

[0015] By using an air pump to inflate the airbag, the moving bar is pushed to move along the expansion slide, changing the bending degree of the mineral insulated fire-resistant cable on the fixed plate, and realizing the detection of different bending degrees of the mineral insulated fire-resistant cable;

[0016] The mineral insulated fireproof cable is fixed by a fixed moving block, and the mineral insulated fireproof cables located on the front and rear sides of the present invention are driven to rub repeatedly on the friction roller, so as to simulate the influence of repeated friction on the bending degree of the mineral insulated fireproof cable in a bent state;

[0017] By rotating the third rotating shaft and driving the fixed disk to move toward the limiting plate at the same time, the mineral insulated fireproof cable can be quickly wound;

[0018] The rack drives the gear to rotate, so that the fixed blade rotates to the direction close to the limiting plate, thereby releasing the restriction on the mineral insulated fire-resistant cable fixed on the fixed plate, allowing the inspection personnel to quickly reel in the mineral insulated fire-resistant cable after inspection, thereby improving the efficiency of the mineral insulated fire-resistant cable inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the bending degree detection device for producing mineral insulated fireproof cables of the present invention;

[0020] Figure 2 It is a schematic diagram of the combined three-dimensional structure of the fixing frame, the fixing plate, the first fixing plate and the limiting plate of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixing bar and the rotating motor combination of the present invention;

[0022] Figure 4 It is a schematic diagram of a three-dimensional structure of the second fixed plate, the second sliding block, the driving member and the rack assembly of the present invention;

[0023] Figure 5 yes Figure 4 A magnified image of point A;

[0024] Figure 6 It is a schematic diagram of the combined three-dimensional structure of the fixed frame, the fixed plate and the fixed moving block of the present invention;

[0025] Figure 7 It is a schematic diagram of the combined three-dimensional structure of the first sliding block, the rotating shaft and the fixing seat of the present invention;

[0026] Figure 8 It is a schematic diagram of the combined three-dimensional structure of the fixing seat, the sliding block and the second rotating shaft of the present invention;

[0027] Fig. 9 It is a schematic diagram of the combined three-dimensional structure of the rotating shaft, the sliding block and the fixed block of the present invention;

[0028] Fig.10 It is a schematic diagram of the three-dimensional structure of the fixed frame, the fixed plate and the rotating motor combination of the present invention;

[0029] Fig.11 It is a schematic diagram of the combined three-dimensional structure of the fixing frame, the fixing plate and the limiting plate of the present invention;

[0030] Fig.12 It is a schematic diagram of the combined three-dimensional structure of the fixing bar, the first rotating shaft, the fixing rotating plate, the first sliding block and the fixing clamping block of the present invention;

[0031] Fig.13 It is a schematic diagram of the combined three-dimensional structure of the fixed rotating plate, the first sliding block and the first sliding groove of the present invention.

[0032] The markings in the figure are: 1-detection support, 2-fixed frame, 2001-first slide slot, 2002-second slide slot, 3-fixed plate, 3001-expansion slide slot, 3002-moving bar, 3003-airbag, 3004-fixed leaf, 3005-gear, 101-first fixed plate, 10101-moving slot, 102-limiting plate, 10201-limiting slot, 103-fixed bar, 10301-first rotating shaft, 10302-fixed rotating plate, 10303-first sliding block, 10304-fixed card block, 10305 -first sliding groove, 104-friction roller, 105-fixed moving block, 10501-first sliding block, 10502-rotating shaft, 10503-fixed seat, 10504-second sliding groove, 10505-sliding block, 10506-fixed block, 10507-second rotating shaft, 106-rotating motor, 107-second sliding block, 201-third rotating shaft, 202-second fixed plate, 20201-third sliding groove, 203-second sliding block, 204-driving member, 205-rack, 100-mineral insulated fire-proof cable. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0034] Example 1

[0035] like Figure 1-Figure 9 and Figure 12-13 As shown, a bending degree detection device for mineral insulated fireproof cable production includes a detection support 1 and a first fixing plate 101; two first fixing plates 101 are fixedly connected to the detection support 1;

[0036] It also includes a bending component, a limiting plate 102, a friction roller 104, a fixed moving block 105 and a fixed component; the two first fixed plates 101 are commonly fixedly connected with the limiting plate 102; the limiting plate 102 is provided with a plurality of limiting grooves 10201 for placing the mineral insulated fire-resistant cable 100; the two first fixed plates 101 are commonly provided with a friction roller 104; a bending component is provided between the two first fixed plates 101; a plurality of fixed moving blocks 105 are provided on the bending component; a fixed component is provided between the two first fixed plates 101.

[0037] The fixing assembly includes a fixing bar 103, a rotating motor 106 and a third rotating shaft 201; the rotating motor 106 is arranged on the first fixing plate 101 located on the right side; the output end of the rotating motor 106 is fixedly connected to the friction roller 104; the two first fixing plates 101 are jointly provided with two third rotating shafts 201; two fixing bars 103 are fixedly connected to the third rotating shaft 201 located on the rear side, and the two fixing bars 103 are respectively located at the left and right ends of the third rotating shaft 201 on the rear side.

[0038] The bending assembly includes a fixed frame 2 and a fixed plate 3; a plurality of fixed frames 2 are fixedly connected to each third rotating shaft 201; the fixed frames 2 on the front and rear sides are staggered; a first slide groove 2001 is provided on each fixed frame 2; a fixed plate 3 is slidably connected to the first slide groove 2001; a plurality of annularly distributed expansion slide grooves 3001 are provided on the fixed plate 3; a moving bar 3002 is slidably connected to each expansion slide groove 3001; an air bag 3003 is provided on the fixed plate 3, and the air bag 3003 is connected to the air pump; two second slide grooves 2002 are provided on each fixed frame 2; a fixed moving block 105 is slidably connected to each second slide groove 2002.

[0039] The friction roller 104 is provided with a plurality of friction blocks made of different materials, and each friction block corresponds to the position of the limiting groove 10201 .

[0040] The surface of each moving bar 3002 is set to be smooth, so as to prevent the moving bar 3002 from affecting the movement of the mineral insulated fire resistant cable 100 when the mineral insulated fire resistant cable 100 moves.

[0041] The three movable bars 3002 located on the lower side of the fixed plate 3 are fixedly connected with fixed leaves 3004 to prevent the mineral insulated fire resistant cable 100 from detaching from the movable bars 3002 when the mineral insulated fire resistant cable 100 is wound around the movable bars 3002 for bending detection, thereby affecting the bending degree detection of the mineral insulated fire resistant cable 100.

[0042] The fixed moving block 105 is composed of a first slider 10501, a rotating shaft 10502, a fixed seat 10503, a second sliding groove 10504, a sliding block 10505, a fixed block 10506 and a second rotating shaft 10507; the first slider 10501 is located in the second sliding groove 2002; the first slider 10501 is rotatably connected to the rotating shaft 10502; the fixed seat 10503 is fixedly connected to the rotating shaft 10502; the fixed block 10506 is fixedly connected to the fixed seat 10503; the fixed seat 10503 is provided with a second sliding groove 10504, and the second sliding groove 10504 is provided with a slider; the slider is rotatably connected to the second rotating shaft 10507; the sliding block 10505 is fixedly connected to the second rotating shaft 10507.

[0043] The fixed bar 103 is composed of a first rotating shaft 10301, a fixed rotating plate 10302, a first sliding block 10303, a fixed clamping block 10304 and a first sliding groove 10305; the first rotating shaft 10301 is rotatably connected to the fixed bar 103; the fixed rotating plate 10302 and the fixed clamping block 10304 are fixedly connected to the first rotating shaft 10301; the fixed rotating plate 10302 is provided with a first sliding groove 10305; the first sliding block 10303 is slidably connected to the first sliding groove 10305.

[0044] After the mineral insulated fire resistant cable 100 is produced, the inspector takes a roll of the mineral insulated fire resistant cable 100 from the same batch for bending test. First, the mineral insulated fire resistant cable 100 is Figure 1 The mineral insulated fireproof cable 100 is fixed on the present invention in the following manner: Figure 3On the fixed strip 103 shown in the figure, the inspector first slides the first sliding block 10303 outward along the first sliding groove 10305, and then places the end of the mineral insulated fire resistant cable 100 between the first sliding block 10303 and the fixed block 10304, and then slides the first sliding block 10303 toward the fixed block 10304 to fix the end of the mineral insulated fire resistant cable 100. Then the inspector pulls the mineral insulated fire resistant cable 100 upward to allow the mineral insulated fire resistant cable 100 to go from the rear side of the present invention along the limiting groove 10201 to the front side of the present invention, and then the mineral insulated fire resistant cable 100 is wound around the fixed plate 3 on the front side of the present invention, and the mineral insulated fire resistant cable 100 bypasses the moving strip 3002, so that the mineral insulated fire resistant cable 1 00 turns, and the mineral insulated fire resistant cable 100 is again wound along the limiting groove 10201 to the rear side of the present invention, and fixed on the fixed disk 3 in the same way, and the mineral insulated fire resistant cable 100 is wound in this way until the mineral insulated fire resistant cable 100 is completely wound, and the end of the mineral insulated fire resistant cable 100 is fixed on the fixed bar 103, and the winding of the mineral insulated fire resistant cable 100 is completed; it should be noted that at this time all the fixed disks 3 are located at the lower end of the fixed frame 2, all the moving bars 3002 are close to the airbags 3003, and the expansion degree of all the airbags 3003 is the same, all the fixed seats 10503 and the parts thereon rotate around the rotating shaft 10502, and the rotating shaft 10502 is driven to rotate by the electric motor, so that the fixed moving block 105 is as shown Fig. 9 As shown, it is ensured that the fixed moving block 105 does not interfere with the movement of the fixed plate 3; by winding and fixing the extracted mineral insulated fire resistant cable 100 on the present invention, the bending degree detection of the entire mineral insulated fire resistant cable 100 is realized, and the integrity of the mineral insulated fire resistant cable 100 is not damaged, and the damage to the mineral insulated fire resistant cable 100 that may be caused by cutting is avoided, and the original performance of the mineral insulated fire resistant cable 100 is maintained. In addition, since the mineral insulated fire resistant cable 100 is not cut, it can maintain better flexibility and bending ability, and truly simulates the bending degree of the mineral insulated fire resistant cable 100 during use.

[0045] After the mineral insulated fireproof cable 100 is wound, the airbag 3003 is inflated by an air pump. The expansion of the airbag 3003 pushes the movable bar 3002 to move outward and expand along the expansion slot 3001, thereby changing the bending degree of the mineral insulated fireproof cable 100 on the fixed disk 3. While the movable bar 3002 moves outward and expands, the fixed disk 3 is driven by the electric slider to slide upward along the first slot 2001 to prevent the mineral insulated fireproof cable 100 from being squeezed and deformed due to the outward movement and expansion of the expansion slot 3001. The airbag 3003 is inflated to different degrees by an air pump to allow the airbag 3003 to expand and push the movable bar 3002 to move outward along the expansion slot 3001. The movable bar 3002 expands to different degrees, so that the bending degree of the mineral insulated fireproof cable 100 on the fixed disk 3 is different, thereby realizing the detection of different bending degrees of the mineral insulated fireproof cable 100.

[0046] After the mineral insulated fire-resistant cable 100 is tested for different bending degrees, the rotating shaft 10502 is driven by an electric motor to rotate, driving the fixing seat 10503 and the parts thereon to rotate to Figure 8 As shown, by sliding the sliding block 10505 along the second sliding groove 10504, the sliding block 10505 and the fixed block 10506 are staggered, and then the sliding block 10505 is driven to rotate outward by the second rotating shaft 10507, so that an opening is opened between the sliding block 10505 and the fixed block 10506, and then the mineral insulated fire resistant cable 100 is fixed at the opening between the sliding block 10505 and the fixed block 10506, and the sliding block 10505 is further rotated to clamp the mineral insulated fire resistant cable 100 between the sliding block 10505 and the fixed block 10506, and the sliding block 10505 is slid along the second sliding groove 10504, so that the fixed movable block 105 is as shown in FIG. Figure 8 As shown, the mineral insulated fireproof cable 100 is fixed on the fixed moving block 105, as shown in FIG. Figure 2After that, the fixed plate 3 is driven as a whole to move upward along the fixed frame 2, and the mineral insulated fire resistant cable 100 is located in the fixed leaf 3004, so that the fixed plate 3 releases the fixation of the mineral insulated fire resistant cable 100, and the position of the mineral insulated fire resistant cable 100 is roughly fixed by the fixed leaf 3004, so that the mineral insulated fire resistant cable 100 has a certain moving space and will not get loose, and then the fixed moving block 105 located at the front side of the present invention is driven to move upward along the second slide groove 2002, so that the mineral insulated fire resistant cable 100 fixed by the fixed moving block 105 moves together, and at the same time, the fixed moving block 105 located at the rear side of the present invention The fixed moving block 105 on the side moves downward along the second slide groove 2002, and then drives the fixed moving block 105 located on the front side of the present invention to move downward along the second slide groove 2002. At the same time, the fixed moving block 105 located on the rear side of the present invention moves upward along the second slide groove 2002, so that the mineral insulated fire resistant cable 100 fixed on the present invention is repeatedly rubbed on the friction roller 104 of the limiting groove 10201, simulating the influence of the repeated friction of the mineral insulated fire resistant cable 100 on the bending degree of the mineral insulated fire resistant cable 100 when the mineral insulated fire resistant cable 100 is bent in the use state.

[0047] Furthermore, different friction blocks are arranged on the friction roller 104, which can simulate the influence of different materials on the bending degree of the mineral insulated fire resistant cable 100 when the mineral insulated fire resistant cable 100 is bent by friction.

[0048] Example 2

[0049] On the basis of Example 1, Figure 1 and Figure 7-Figure 13 As shown, it also includes a second slider 107; a motor is arranged on each third rotating shaft 201, and the third rotating shaft 201 is driven to rotate by the motor; a movable groove 10101 is opened on each first fixed plate 101; a second slider 107 is slidably connected in each movable groove 10101; the two second sliders 107 are rotatably connected to the friction roller 104; a rotating motor 106 is fixedly connected to the second slider 107 on the right side; and the output end of the rotating motor 106 is fixedly connected to the friction roller 104.

[0050] It also includes a second fixed plate 202, a second sliding block 203, a driving member 204 and a rack 205; the second fixed plate 202 is fixedly connected to the third rotating shaft 201; the second fixed plate 202 is provided with a third sliding groove 20201; the second sliding block 203 is slidably connected in the third sliding groove 20201; the second sliding block 203 is fixedly connected to the driving member 204, and the driving member 204 is an electric push rod; the output end of the driving member 204 is fixedly connected to the rack 205; each fixed disk 3 is fixedly connected to a gear 3005; all gears 3005 are meshed with the rack 205.

[0051] In order to facilitate the bending test of the mineral insulated fire resistant cable 100 by the present invention, the tester can quickly wind the mineral insulated fire resistant cable 100 on the present invention. Before the mineral insulated fire resistant cable 100 is wound on the present invention, the third rotating shaft 201 located on the front side of the present invention is driven by a motor to rotate clockwise from right to left, and the third rotating shaft 201 located on the rear side of the present invention is driven to rotate counterclockwise from right to left, so that the present invention is in a state of bending. Fig.10 As shown, the fixed disks 3 are driven to approach each other, and the second slider 107 is driven to drive the limiting plate 102 and the friction roller 104 to move downward along the moving groove 10101 to prepare for winding the cable. The inspection personnel in the present invention are as shown. Fig.10 As shown, the mineral insulated fireproof cable 100 is wound, so that the inspector can quickly wind the mineral insulated fireproof cable 100 on a plane, avoiding the situation that the inspector needs to frequently walk back and forth to wind the mineral insulated fireproof cable 100 when using the present invention. After the winding is completed, the fixing plates 3 move away from each other, releasing the remaining mineral insulated fireproof cable 100, and winding on the present invention, and then the third rotating shaft 201 is driven by the motor to drive the fixing frame 2 and the parts thereon as shown in FIG. Figure 1 As shown, the second slider 107 is driven to move the limiting plate 102 and the friction roller 104 upward along the movable groove 10101, so that the mineral insulated fire resistant cable 100 enters the limiting groove 10201, and prepares to perform bending detection on the mineral insulated fire resistant cable 100.

[0052] After the present invention completes the bending degree detection of the mineral insulated fire resistant cable 100 wound thereon, in order to facilitate the quick removal of the mineral insulated fire resistant cable 100 after the detection, the fixing of the mineral insulated fire resistant cable 100 by the fixed moving block 105 is first released, and then the fixed moving block 105 is driven as Fig. 9 As shown, the output end of the driving member 204 is driven to move to the left, pushing the rack 205 fixed thereon to move to the left, driving the gear 3005 to rotate clockwise from the front, and the rotation of the gear 3005 drives the fixed disk 3 to rotate, so that the fixed leaf 3004 located at the lower end of the fixed disk 3 rotates to a direction close to the limiting plate 102, thereby releasing the restriction on the mineral insulated fire-resistant cable 100, and the mineral insulated fire-resistant cable 100 quickly detaches from the fixed disk 3, and the inspector can quickly reel in the mineral insulated fire-resistant cable 100 that has been inspected, thereby improving the efficiency of the bending degree inspection of the mineral insulated fire-resistant cable 100.

[0053] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A bending degree detection device for mineral insulated fireproof cable production, comprising a detection support (1) and a first fixing plate (101); two first fixing plates (101) are fixedly connected to the detection support (1); characterized in that: It also includes a bending assembly, a limiting plate (102), a friction roller (104), a fixed moving block (105) and a fixing assembly; the two first fixing plates (101) are fixedly connected to the limiting plate (102); the limiting plate (102) is provided with a plurality of limiting grooves (10201) for placing the mineral insulated fire resistant cable (100); the two first fixing plates (101) are provided with a friction roller (104) for rubbing the mineral insulated fire resistant cable (100); a bending assembly for bending the mineral insulated fire resistant cable (100) at different angles is provided between the two first fixing plates (101); the bending assembly is provided with a plurality of fixed moving blocks (105) for fixing and pulling and rubbing the mineral insulated fire resistant cable (100); and a fixing assembly for fixing the bending assembly is provided between the two first fixing plates (101).

2. A bending degree detection device for mineral insulated fire-resistant cable production according to claim 1, characterized in that: The fixing assembly comprises a fixing bar (103), a rotating motor (106) and a third rotating shaft (201); the rotating motor (106) is arranged on the first fixing plate (101) located on the right side; the output end of the rotating motor (106) is fixedly connected to the friction roller (104); the two first fixing plates (101) are jointly provided with two third rotating shafts (201); two fixing bars (103) for fixing two ends of the mineral insulated fireproof cable (100) are fixedly connected to the third rotating shaft (201) located on the rear side, and the two fixing bars (103) are respectively located at the left and right ends of the third rotating shaft (201) on the rear side.

3. A bending degree detection device for mineral insulated fireproof cable production according to claim 1, characterized in that: The bending assembly comprises a fixed frame (2) and a fixed plate (3); each third rotating shaft (201) is fixedly connected to a plurality of fixed frames (2); the fixed frames (2) on the front and rear sides are arranged in a staggered manner; each fixed frame (2) is provided with a first slide groove (2001); the first slide groove (2001) is slidably connected to the fixed plate (3); the fixed plate (3) is provided with a plurality of annularly distributed expansion slide grooves (3001); each expansion slide groove (3001) is slidably connected to a moving bar (3002); an air bag (3003) is arranged on the fixed plate (3), and the air bag (3003) is connected to an air pump; each fixed frame (2) is provided with two second slide grooves (2002); each second slide groove (2002) is slidably connected to a fixed moving block (105).

4. A bending degree detection device for mineral insulated fireproof cable production according to claim 2, characterized in that: A plurality of friction blocks made of different materials are arranged on the friction roller (104), and each friction block corresponds to the position of the limiting groove (10201).

5. A bending degree detection device for producing mineral insulated fireproof cables according to claim 3, characterized in that: The surface of each moving bar (3002) is smooth.

6. A bending degree detection device for producing mineral insulated fireproof cables according to claim 3, characterized in that: The three moving bars (3002) located on the lower side of the fixed plate (3) are all fixedly connected with fixed leaves (3004).

7. A bending degree detection device for mineral insulated fireproof cable production according to claim 1, characterized in that: The fixed moving block (105) is composed of a first sliding block (10501), a rotating shaft (10502), a fixed seat (10503), a second sliding groove (10504), a sliding block (10505), a fixed block (10506) and a second rotating shaft (10507); the first sliding block (10501) is located in the second sliding groove (2002); the first sliding block (10501) is rotatably connected to the rotating shaft (10502); the fixed seat (10503) is fixedly connected to the rotating shaft (10502); the fixed block (10506) is fixedly connected to the fixed seat (10503); the second sliding groove (10504) is provided on the fixed seat (10503), and the sliding block is provided on the second sliding groove (10504); the sliding block is rotatably connected to the second rotating shaft (10507); the sliding block (10505) is fixedly connected to the second rotating shaft (10507).

8. A bending degree detection device for mineral insulated fireproof cable production according to claim 1, characterized in that: The fixed bar (103) is composed of a first rotating shaft (10301), a fixed rotating plate (10302), a first sliding block (10303), a fixed clamping block (10304) and a first sliding groove (10305); the first rotating shaft (10301) is rotatably connected to the fixed bar (1033); the fixed rotating plate (10302) and the fixed clamping block (10304) are fixedly connected to the first rotating shaft (10301); the first sliding groove (10305) is provided on the fixed rotating plate (10302); and the first sliding block (10303) is slidably connected to the first sliding groove (10305).

9. A bending degree detection device for mineral insulated fireproof cable production according to claim 2, characterized in that: It also includes a second slider (107); a motor is arranged on each third rotating shaft (201); a movable groove (10101) is opened on each first fixed plate (101); a second slider (107) is slidably connected in each movable groove (10101); the two second sliders (107) are rotatably connected with a friction roller (104) for rubbing the mineral insulated fireproof cable (100); a rotating motor (106) is fixedly connected to the right second slider (107); and the output end of the rotating motor (106) is fixedly connected to the friction roller (104).

10. A bending degree detection device for mineral insulated fireproof cable production according to claim 3, characterized in that: The invention also comprises a second fixed plate (202), a second sliding block (203), a driving member (204) and a rack (205); the second fixed plate (202) is fixedly connected to the third rotating shaft (201); a third sliding groove (20201) is provided on the second fixed plate (202); a second sliding block (203) is slidably connected in the third sliding groove (20201); the second sliding block (203) is fixedly connected to the driving member (204); a rack (205) is fixedly connected to the output end of the driving member (204); a gear (3005) is fixedly connected to each fixed plate (3); and all the gears (3005) are meshed with the rack (205).

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