Cable trench explosion-proof cover plate

Abstract

The utility model relates to the technical field of cable trench cover plates, in particular to a cable trench explosion-proof cover plate. The utility model provides a cable trench explosion-proof cover plate capable of inhibiting open fire in time, which comprises a cover plate, cross beams, bearing plates, a storage frame, a rotating shaft, a volute spiral spring and a rotating frame, the cross beams are arranged on the front side and the rear side of the bottom of the cover plate, the bearing plates are arranged on the left side and the right side of the bottom of the cover plate, and the storage frame is arranged in the middle of the bottom of the cover plate. Rotating shafts are symmetrically and rotationally arranged between the front side and the rear side of the storage frame, volute spiral springs are arranged between the front ends of the rotating shafts and the inner wall of the storage frame, and rotating frames are arranged on the two rotating shafts. The dry powder is temporarily stored through cooperation of the sealing film and the storage frame, the rotating frame is driven to rotate through the reset acting force of the volute spiral spring, then the sealing film is pierced, the dry powder in the sealing film is released, fire is extinguished in time, the effect of controlling the fire is achieved, and suppression of the fire is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable trench covers, and in particular to an explosion-proof cover for a cable trench. Background Art

[0002] Cable trench cover is an important component used to cover the cable trench. Its main purpose is to protect the cable from external environmental influences, such as rain erosion, dust accumulation, accidental mechanical damage, and to provide a safe walking or driving surface.

[0003] According to the patent authorization publication number CN217824187U, a tight-hoop type explosion-proof cable trench cover includes a cover body, the outer side of the cover body is sleeved with a cable trench base, and the upper surface of the cable trench base is symmetrically provided with placement grooves, and the left and right walls of the cover body are respectively against the inner walls of the two placement grooves. In this scheme, the lower ends of the first clamping hoop and the second clamping hoop are respectively inserted into the interior of the two card slots, so that the cover body can be clamped in the interior of the cable trench base to complete the installation of the cover body, which can improve the stability of the cover inside the cable trench base to a certain extent. However, the overall cover of this scheme is a relatively closed structure. If it is in an outdoor environment, the methane generated in the trench cannot be effectively discharged, and it is easy to explode when a short circuit occurs in the cable, which poses a great safety hazard. In addition, when a short circuit and leakage occur in the internal cable, it cannot be effectively suppressed or extinguished, resulting in an open flame.

[0004] Therefore, in view of the above problems, a cable trench explosion-proof cover which can timely suppress open flames is proposed. Utility Model Content

[0005] In order to overcome the above-mentioned shortcomings in the prior art, the utility model provides an explosion-proof cover plate for a cable trench which can timely suppress open flames.

[0006] In order to solve the above technical problems, the utility model provides an explosion-proof cover plate for a cable trench, comprising a cover plate, a crossbeam, a load-bearing plate, a storage frame, a rotating shaft, a spiral spring, a rotating frame and a sealing film, crossbeams are arranged on the front and rear sides of the bottom of the cover plate, load-bearing plates are arranged on the left and right sides of the bottom of the cover plate, a storage frame is arranged at the middle position of the bottom of the cover plate, a rotating shaft is symmetrically arranged between the front and rear sides of the storage frame, a spiral spring is arranged between the front end of the rotating shaft and the inner wall of the storage frame, rotating frames are arranged on the two rotating shafts, and a sealing film is arranged at the bottom of the storage frame.

[0007] Preferably, reinforcing ribs are also included, and the reinforcing ribs are symmetrically arranged between the load-bearing plate and the storage frame.

[0008] Preferably, the head and tail parts of the two reinforcing ribs on the same side are arranged in opposite directions.

[0009] Preferably, a cutter and a crossbar are further included, wherein cutters are arranged on both sides of the bottom of the rotating frame, and a crossbar is arranged between the two cutters on the same side.

[0010] Preferably, a one-way valve is also included, and the one-way valve is arranged through all four sides of the top of the cover plate.

[0011] Preferably, a filter screen is also included, and a filter screen is arranged on the top of each of the four one-way valves.

[0012] Beneficial effects: 1. The utility model realizes temporary storage of dry powder through the cooperation of the sealing film and the storage frame, and then drives the rotating frame to rotate through the resetting force of the scroll spring, thereby piercing the sealing film, so that the dry powder inside is released, that is, the fire is extinguished in time, thereby achieving the effect of controlling the fire and suppressing the fire;

[0013] 2. The utility model drives the cutter to scrape the sealing film through the rotating frame, so that the opening speed of the sealing film is improved, and the efficiency of controlling the fire is further improved, thereby achieving a faster fire extinguishing effect;

[0014] 3. The utility model discharges the gas inside the cable trench through a one-way valve, thereby reducing the concentration of methane inside the trench. At the same time, the filter screen is used to block debris, so that the use of the one-way valve can avoid interference from debris, thereby further improving the overall safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of components such as the cover plate, load-bearing plate and sealing film of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of components such as the crossbeam, load-bearing plate and reinforcing ribs of the utility model.

[0018] Figure 4 It is a three-dimensional structural cross-sectional view of the storage frame of the utility model.

[0019] Figure 5 It is a three-dimensional structural sectional view of the cover plate of the utility model.

[0020] Figure 6 It is a partial enlarged three-dimensional structural schematic diagram of point A of the present utility model.

[0021] The markings in the attached drawings are: 1-cover plate, 2-cross beam, 3-load-bearing plate, 4-reinforcement rib, 5-storage frame, 6-rotating shaft, 7-volute spring, 8-rotating frame, 9-cutter, 10-cross bar, 11-sealing film, 12-check valve, 13-filter. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] Embodiment: A cable trench explosion-proof cover, such as Figure 1-Figure 4 As shown, it includes a cover plate 1, a crossbeam 2, a load-bearing plate 3, a storage frame 5, a rotating shaft 6, a spiral spring 7, a rotating frame 8 and a sealing film 11. The crossbeams 2 are symmetrically fixedly arranged on the front and rear sides of the bottom of the cover plate 1. The crossbeams 2 can balance the load at the front and rear positions of the bottom of the cover plate 1, thereby facilitating the overall installation of the cover plate 1 and achieving a better installation effect. The load-bearing plates 3 are symmetrically fixedly arranged on the left and right sides of the bottom of the cover plate 1. The load-bearing plates 3 and the crossbeams 2 play a role in balancing the load, and can balance the positions of the left and right sides of the bottom of the cover plate 1, so that the four sides of the cover plate 1 are balanced, making its installation effect more stable. The middle position of the bottom of the cover plate 1 is provided with a A storage frame 5 is provided, and the storage frame 5 is used to store dry powder. Two rotating shafts 6 are provided. The rotating shafts 6 are symmetrically rotated between the front and rear sides of the storage frame 5. A spiral spring 7 is provided between the front end of the rotating shaft 6 and the inner wall of the storage frame 5. The two spiral springs 7 are arranged in opposite directions, and the spiral springs 7 play a role in promoting the operation of parts. The initial state of the spiral springs 7 is a compressed state. When it is not restricted, it resets, and then drives the rotating shaft 6 and the parts thereon to rotate. A rotating frame 8 is provided on the two rotating shafts 6, and the rotating frame 8 rotates in opposite directions. A sealing film 11 is provided at the bottom of the storage frame 5, and the sealing film 11 can control the scattering of dry powder.

[0024] like Figure 2 , Figure 4-Figure 6 As shown, it also includes reinforcing ribs 4. Two reinforcing ribs 4 are symmetrically fixed between the inner side of the two load-bearing plates 3 and the storage frame 5. The head and tail of the two reinforcing ribs 4 on the same side are arranged in opposite directions, which can increase the supporting strength of the cover plate 1 to a greater extent and achieve better load-bearing and supporting effects; cutters 9. Cutters 9 are arranged on the front and back sides of the bottom of the two rotating frames 8. The cutters 9 help to scrape the sealing film 11, so that the dry powder is scattered to achieve a fire extinguishing effect; a cross bar 10. A cross bar 10 is arranged between the two cutters 9 on the same side. The cross bar 10 is mainly used to support the two cutters 9; a one-way valve 12. A one-way valve 12 is arranged on all sides of the top of the cover plate 1. The one-way valve 12 is used to discharge the methane and other flammable gases inside the cable trench, thereby reducing the internal gas concentration; a filter screen 13. The top of the four one-way valves 12 is provided with a filter screen 13, and the filter screen 13 can prevent debris from entering the one-way valve 12.

[0025] When it is necessary to install the cover plate 1 on the cable trench, the staff will first place the cover plate 1 where it needs to be installed, so that the cross beam 2 and the load-bearing plate 3 are in contact with the inner wall of the cable trench, and the cover plate 1 and the cable trench are in a matching state. At the same time, the reinforcing ribs 4 provide a guarantee for the supporting strength of the cover plate 1, and the installation operation of the cover plate 1 is completed; there are many external environmental interference factors. If biogas accumulates or the cable short circuit generates sparks, it will cause the risk of fire. When this situation is needed, the internal biogas will first be discharged through the one-way valve 12, so that the internal flammable gas is released and the internal gas concentration is reduced. Because the one-way valve 12 is a one-way discharge, it will not introduce water flow. At the same time, the filter screen 13 will block the debris above to avoid To prevent debris from clogging the one-way valve 12, if a fire occurs, the sealing film 11 will be ruptured due to the high temperature and burning caused by the burning of the open flame. At the same time, the rupture of the sealing film 11 will cause the parts placed inside the storage frame 5 to lack support, that is, they will tilt downward. Since the initial state of the spiral spring 7 is a compressed state, a reset operation will occur due to the lack of support restriction, thereby driving the two rotating shafts 6 to rotate, causing the two rotating frames 8 to rotate downward, and at the same time driving the cutter 9 connected thereto to rotate downward, causing it to contact the sealing film 11, and then the sharp blade of the cutter 9 is completely scraped, and the dry powder placed inside the storage frame 5 is dispersed downward to extinguish the fire and suppress the open flame, so that the fire is controlled.

[0026] The above-mentioned embodiments only express the preferred implementation of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications, improvements and substitutions can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An explosion-proof cover plate for a cable trench, comprising a cover plate (1), a crossbeam (2) and a bearing plate (3), wherein the crossbeam (2) is arranged on both the front and rear sides of the bottom of the cover plate (1), and the bearing plate (3) is arranged on both the left and right sides of the bottom of the cover plate (1); It is characterized in that It also comprises a storage frame (5), a rotating shaft (6), a spiral spring (7), a rotating frame (8) and a sealing film (11); a storage frame (5) is arranged at the middle position of the bottom of the cover plate (1); a rotating shaft (6) is symmetrically arranged between the front and rear sides of the storage frame (5) for rotation; a spiral spring (7) is arranged between the front end of the rotating shaft (6) and the inner wall of the storage frame (5); a rotating frame (8) is arranged on each of the two rotating shafts (6); and a sealing film (11) is arranged at the bottom of the storage frame (5).

2. The cable trench explosion-proof cover according to claim 1, characterized in that: It also includes reinforcing ribs (4), and the reinforcing ribs (4) are symmetrically arranged between the load-bearing plate (3) and the storage frame (5).

3. The explosion-proof cover plate for cable trench according to claim 2, characterized in that: The head and tail ends of the two reinforcing ribs (4) on the same side are arranged in opposite directions.

4. The explosion-proof cover plate for cable trench according to claim 3, characterized in that: It also includes a cutter (9) and a crossbar (10), wherein the cutters (9) are arranged on both sides of the bottom of the rotating frame (8), and a crossbar (10) is arranged between the two cutters (9) on the same side.

5. The cable trench explosion-proof cover according to claim 4, characterized in that: A one-way valve (12) is also included. The one-way valve (12) is provided through all four sides of the top of the cover plate (1).

6. The cable trench explosion-proof cover according to claim 5, characterized in that: A filter screen (13) is also included, and the top of each of the four one-way valves (12) is provided with a filter screen (13).

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