Cable flame-retardant detection device

Abstract

The cable flame retardation detection device comprises a cabinet body, a clamping mechanism, a lifting mechanism and a supporting plate, the bottom of the cabinet body is provided with a base, the cabinet body is provided with an inner cavity, the front side of the inner cavity is open, the top of the base is rotatably provided with a cabinet door at the front side of the cabinet body, the clamping mechanism comprises a sliding block, one side of the sliding block is provided with a groove, and the groove is provided with a clamping groove. Connecting rods are arranged on the end walls of the two sides of the groove in a sliding and penetrating mode correspondingly, clamping plates are fixedly arranged on the opposite sides of the two connecting rods, the clamping plates abut against the groove in a sliding mode, and the portions, between the clamping plates and the end walls of the groove, of the connecting rods are sleeved with compressed springs; the supporting plate is in transmission connection with the cabinet door through a transmission assembly, and a blowtorch is fixedly arranged at the top of one end of the supporting plate. Through the arrangement, the blow lamp can be conveniently ignited by a worker, and meanwhile, the worker can be prevented from being damaged by a molten cable rubber layer.

Description

Technical Field

[0001] This utility model belongs to the field of cable testing technology, specifically relating to a cable flame retardant testing device. Background Technology

[0002] Cables are devices used to transmit electrical energy or signals. The outer surface of a cable is covered with an insulating rubber layer. To prevent cables from becoming a medium for the spread of fire in a fire, relevant standards have put forward strict requirements for the flame retardant performance of cables. The existing test method is to hang the cable sample vertically, ignite it from the bottom, and observe the vertical combustion spread of the flame over a certain period of time in order to test the flame retardant performance of the cable.

[0003] Chinese patent CN218470649U discloses a flame retardancy testing device for PVC cable materials. The device includes a tester, a test cabinet, and a cabinet door. An adjustment and fixing mechanism is provided on one side of the inner wall of the test cabinet. The adjustment and fixing mechanism includes a horizontal plate, a fixing ring, a lead screw, a drive motor, an adjustment plate, and a threaded knob. The above solution uses the rotation of the lead screw to adjust the height of the fixing ring according to the length of the cut cable, thereby allowing the blowtorch to effectively burn the cable.

[0004] The above solution requires the cable to be hung above the blowtorch during use. The operating space between the cable and the blowtorch is small, making it inconvenient for staff to light the blowtorch. Furthermore, after the staff lights the blowtorch, the rubber layer of the cable is prone to melting due to heat, and the melted rubber will adversely affect the safety of the staff. Utility Model Content

[0005] The present invention aims to provide a cable flame retardant testing device to facilitate workers in igniting the blowtorch and improve safety during the testing process.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A cable flame retardant testing device includes a cabinet, a clamping mechanism, a lifting mechanism, and a support plate. The cabinet has a base at its bottom and an inner cavity with an open front side. A cabinet door is rotatably mounted on the top of the base on the front side of the cabinet. The clamping mechanism includes a slider with a groove on one side. Connecting rods slide through the two end walls of the groove. Clamping plates are fixedly mounted on opposite sides of the two connecting rods, and the clamping plates slide against the groove. A compression spring is sleeved between the clamping plates and the end walls of the groove on the outside of the connecting rods. The lifting mechanism is located in the inner cavity and can drive the slider to move up and down. The support plate is rotatably mounted on the top of the base in the inner cavity and is connected to the cabinet door via a transmission assembly. A blowtorch is fixedly mounted on the top of one end of the support plate.

[0008] The principle and effects of this technical solution:

[0009] Rotate the cabinet door to open the inner cavity. The cabinet door drives the support plate to rotate via the transmission component, causing one end of the support plate, which carries the blowtorch, to rotate to the side near the opening. Place one end of the cable to be tested between the two clamping plates. The two clamping plates clamp the cable under the action of the compression spring to fix the cable. Drive the lifting mechanism to move the slider up and down, so that the lower edge of the cable is close to the upper edge of the blowtorch. Ignite the blowtorch and rotate the cabinet door in the opposite direction. When the cabinet door closes the opening, one end of the support plate, carrying the blowtorch, rotates to the bottom of the cable. Record the burning status of the cable within a specified time to judge the flame retardant performance of the cable.

[0010] With the above configuration, when the cabinet door is opened, the transmission component moves the support plate carrying the blowtorch closer to the open side, making it easier for the staff to light the blowtorch. At the same time, when the cabinet door is closed, the blowtorch is moved under the cable to avoid injury to the staff from the melted cable rubber layer, thus improving the safety of the device during use.

[0011] In this utility model, a first rotating shaft is fixedly installed at the bottom of one end of the cabinet door, and a second rotating shaft is fixedly installed at the bottom of the other end of the support plate. The first rotating shaft and the second rotating shaft are respectively rotatably inserted into the base. The transmission assembly includes a first sprocket fixedly sleeved on the first rotating shaft, a second sprocket fixedly sleeved on the second rotating shaft, and a chain wound around the first sprocket and the second sprocket.

[0012] The principle and effects of this technical solution:

[0013] When the cabinet door is opened, the first sprocket, which is fixedly sleeved on the outer wall of the first rotating shaft, drives the second sprocket and the second rotating shaft to rotate counterclockwise via a chain. This causes the support plate to rotate counterclockwise along the axis of the second rotating shaft. When the cabinet door is fully opened, one end of the support plate rotates to the side closer to the opening. After the blowtorch is lit, when the cabinet door is closed, the support plate rotates clockwise along the axis of the second rotating shaft. When the cabinet door is fully closed, one end of the support plate is located below the clamping mechanism.

[0014] The above setup achieves the goal of enabling the cabinet door to drive the support plate to rotate via the transmission assembly.

[0015] In this utility model, the lifting mechanism includes a lead screw, a guide rod, and a motor. The lead screw is vertically rotatable and inserted into the inner cavity. The upper and lower ends of the guide rod are fixedly connected to the top wall of the inner cavity and the base, respectively. The motor is fixedly installed on the top of the cabinet and is connected to the lead screw for transmission. The slider is fitted onto the lead screw and slidably fitted onto the guide rod.

[0016] The principle and effects of this technical solution:

[0017] The motor drives the lead screw to rotate, and the guide rod prevents the slider from rotating with the lead screw, thus causing the slider to move up and down with the rotation of the lead screw.

[0018] The above settings allow for adjustment of the slider's height to clamp cables of various cutting lengths.

[0019] In this invention, a protrusion is fixedly provided at the bottom of one end of the support plate, and a ball bearing is movably connected to the bottom of the protrusion. A groove that mates with the protrusion is recessed at the top of the base, and the ball bearing abuts against the bottom wall of the groove. This design reduces the resistance experienced by the support plate during rotation, improving the smoothness of the device's operation.

[0020] In this invention, multiple through holes extending to the inner wall of the inner cavity are provided at the bottom of one side wall of the cabinet, and an exhaust hole extending to the top surface of the cabinet is provided on the top wall of the inner cavity. An exhaust fan is fixedly installed inside the exhaust hole, and a ventilation hose communicating with the exhaust hole is fixedly installed on the top of the cabinet. This design ensures the combustion effect of the blowtorch while promptly discharging combustion exhaust gases from the inner cavity, preventing pollution of the experimental environment.

[0021] In this invention, the cabinet door and the cabinet body are magnetically connected. This design allows the cabinet door to remain closed during experiments, thus preventing the blowtorch from shifting.

[0022] In this invention, the two clamping plates have symmetrical V-shaped notches on opposite sides. Positioning the cable to be tested between these notches allows for proper positioning of the cable, ensuring it is located above the blowtorch. Attached Figure Description

[0023] Figure 1 This is a monoaxial view of the utility model in use.

[0024] Figure 2 This is a biaxial projection of the utility model in use.

[0025] Figure 3 Disassembly of the components of this utility model Figure 1 ;

[0026] Figure 4 Disassembly of the components of this utility model Figure 2 ;

[0027] Figure 5 Disassembly of the components of this utility model Figure 3 ;

[0028] Figure 6 This is a partial front sectional view of the present invention. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0030] The reference numerals in the accompanying drawings of the instruction manual include: 10, cabinet body; 11, base; 111, slide groove; 12, inner cavity; 13, cabinet door; 131, first pivot; 14, through hole; 15, exhaust hole; 16, exhaust fan; 17, ventilation hose; 18, magnet; 21, slider; 22, groove; 23, connecting rod; 24, clamping plate; 241, notch; 25, compression spring; 31, lead screw; 32, guide rod; 33, motor; 40, support plate; 41, blowtorch; 42, second pivot; 43, protrusion; 431, ball bearing; 51, first sprocket; 52, second sprocket; 53, chain.

[0031] Example:

[0032] As attached Figure 1-6 As shown, this utility model discloses a cable flame retardant testing device, including a cabinet 10, a clamping mechanism, a lifting mechanism, and a support plate 40. The bottom of the cabinet 10 has a base 11, and the cabinet 10 has an inner cavity 12 with an open front side. The top of the base 11 is rotatably provided with a cabinet door 13 on the front side of the cabinet 10. The clamping mechanism includes a slider 21, with a groove 22 on one side of the slider 21. Connecting rods 23 are slidably passed through the two end walls of the groove 22, and clamping plates 24 are fixedly provided on the opposite side of the two connecting rods 23. The clamping plates 24 slide against the groove 22. A compression spring 25 is sleeved between the connecting rods 23 and the end walls of the clamping plates 24 and the groove 22. The lifting mechanism is located in the inner cavity 12 and can drive the slider 21 to move up and down. The support plate 40 is rotatably provided on the top of the base 11 in the inner cavity 12, and the support plate 40 is connected to the cabinet door 13 through a transmission component. A blowtorch 41 is fixedly provided on the top of one end of the support plate 40.

[0033] In this embodiment, a first rotating shaft 131 is fixedly installed at the bottom of one end of the cabinet door 13, and a second rotating shaft 42 is fixedly installed at the bottom of the other end of the support plate 40. The first rotating shaft 131 and the second rotating shaft 42 are respectively rotatably inserted into the base 11. The transmission assembly includes a first sprocket 51 fixedly sleeved on the first rotating shaft 131, a second sprocket 52 fixedly sleeved on the second rotating shaft 42, and a chain 53 wound around the first sprocket 51 and the second sprocket 52.

[0034] In this embodiment, the lifting mechanism includes a lead screw 31, a guide rod 32, and a motor 33. The lead screw 31 is vertically rotatably inserted into the inner cavity 12. The upper and lower ends of the guide rod 32 are fixedly connected to the top wall of the inner cavity 12 and the base 11, respectively. The motor 33 is fixedly installed on the top of the cabinet 10 and is connected to the lead screw 31 for transmission. The slider 21 is fitted onto the lead screw 31 and slidably fitted onto the guide rod 32.

[0035] In this embodiment, a protrusion 43 is fixedly provided at the bottom of one end of the support plate 40, and a ball bearing 431 is movably connected to the bottom of the protrusion 43. The top of the base 11 is recessed with a groove 111 that cooperates with the protrusion 43, and the ball bearing 431 abuts against the bottom wall of the groove 111.

[0036] In this embodiment, a plurality of through holes 14 are provided at the bottom of one side wall of the cabinet 10, which extend to the inner side wall of the inner cavity 12. An exhaust hole 15 is provided on the top wall of the inner cavity 12, which extends to the top surface of the cabinet 10. An exhaust fan 16 is fixedly installed in the exhaust hole 15. A ventilation hose 17 communicating with the exhaust hole 15 is fixedly installed on the top of the cabinet 10. An exhaust gas treatment device is connected to the output end of the ventilation hose 17.

[0037] In this embodiment, the cabinet door 13 and the cabinet body 10 are magnetically connected by a magnet 18.

[0038] In this embodiment, the two clamping plates 24 are symmetrically provided with V-shaped notches 241 on one side facing each other.

[0039] The specific implementation process is as follows:

[0040] Rotate cabinet door 13 to open inner cavity 12. Cabinet door 13 drives support plate 40 to rotate through transmission component, so that one end of support plate 40 carrying torch 41 rotates to the side close to the opening. One end of the cable to be tested is clamped between two clamping plates 24. The two clamping plates 24 clamp the cable under the action of compression spring 25 to fix the cable. Drive lifting mechanism to move slider 21 up and down, so that the lower edge of the cable is close to the upper edge of torch 41. Light torch 41 and rotate cabinet door 13 in the opposite direction. When cabinet door 13 closes the opening, one end of support plate 40 carrying torch 41 rotates to the bottom of the cable. Record the burning status of the cable within a specified time to judge the flame retardant performance of the cable.

[0041] When the cabinet door 13 is opened, the first sprocket 51, which is fixedly sleeved on the outer wall of the first rotating shaft 131, drives the second sprocket 52 and the second rotating shaft 42 to rotate counterclockwise via the chain 53. This causes the support plate 40 to rotate counterclockwise along the axis of the second rotating shaft 42. When the cabinet door 13 is fully opened, one end of the support plate 40 rotates to the side closer to the opening. After the blowtorch 41 is lit, when the cabinet door 13 is closed, the support plate 40 rotates clockwise along the axis of the second rotating shaft 42. When the cabinet door 13 is fully closed, one end of the support plate 40 is located below the clamping mechanism.

[0042] The motor 33 drives the lead screw 31 to rotate. Because the guide rod 32 prevents the slider 21 from rotating with the lead screw 31, the slider 21 moves up and down with the lead screw 31.

[0043] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A cable flame retardant testing device, characterized in that, include: The cabinet has a base at the bottom and an inner cavity with an open front side. A cabinet door is rotatably installed on the top of the base on the front side of the cabinet. The clamping mechanism includes a slider, a groove on one side of the slider, connecting rods slidingly passing through the two end walls of the groove, clamping plates fixedly installed on the opposite side of the two connecting rods, the clamping plates slidingly abutting against the groove, and a compression spring sleeved between the clamping plates and the end walls of the groove outside the connecting rods. A lifting mechanism, which is disposed in the inner cavity, is capable of driving the slider to move up and down; A support plate is rotatably mounted on top of the base within the inner cavity, and the support plate is connected to the cabinet door via a transmission assembly. A blowtorch is fixedly mounted on the top of one end of the support plate.

2. The cable flame retardant testing device as described in claim 1, characterized in that: A first rotating shaft is fixedly installed at the bottom of one end of the cabinet door, and a second rotating shaft is fixedly installed at the bottom of the other end of the support plate. The first rotating shaft and the second rotating shaft are respectively rotatably inserted into the base. The transmission assembly includes a first sprocket fixedly sleeved on the first rotating shaft, a second sprocket fixedly sleeved on the second rotating shaft, and a chain wound around the first sprocket and the second sprocket.

3. The cable flame retardant testing device as described in claim 2, characterized in that: The lifting mechanism includes a lead screw, a guide rod, and a motor. The lead screw is inserted into the inner cavity and rotates vertically. The upper and lower ends of the guide rod are fixedly connected to the top wall of the inner cavity and the base, respectively. The motor is fixedly installed on the top of the cabinet and is connected to the lead screw for transmission. The slider is fitted onto the lead screw and slidably fitted onto the guide rod.

4. The cable flame retardant testing device as described in claim 3, characterized in that: A protrusion is fixedly provided at the bottom of one end of the support plate, and a ball is movably connected to the bottom of the protrusion. A groove that mates with the protrusion is recessed at the top of the base, and the ball abuts against the bottom wall of the groove.

5. The cable flame retardant testing device as described in claim 4, characterized in that: The bottom of one side wall of the cabinet has multiple through holes that extend to the inner side wall of the cavity. The top wall of the cavity has an exhaust hole that extends to the top surface of the cabinet. An exhaust fan is fixedly installed in the exhaust hole. A ventilation hose connected to the exhaust hole is fixedly installed on the top of the cabinet.

6. The cable flame retardant testing device as described in claim 5, characterized in that: The cabinet door and the cabinet body are connected by magnets.

7. The cable flame retardant testing device as described in claim 6, characterized in that: The two clamps are symmetrically provided with V-shaped notches on one side facing each other.

Images