Ventilation waterproof door special for cable trench

Abstract

The invention relates to a protective door, in particular to a special ventilation waterproof door for a cable trench, which comprises a door frame, a door plate hinged in the door frame and a transmission mechanism arranged on the surface of the door plate and used for controlling the door plate to open and close. The center shaft is connected with a left long connecting rod and a right long connecting rod through a gear set, a left lower linkage switch is arranged on one side of the left long connecting rod, a right upper linkage switch is arranged on one side of the right long connecting rod, and the center shaft is rotated to drive the left long connecting rod and the right long connecting rod to swing at the same time. The hand wheel is arranged on the door plate, the hand wheel is rotated to drive the center shaft to rotate, the center shaft drives the left long connecting rod and the right long connecting rod to swing through the gear set at the same time, and therefore the left lower linkage switch and the right upper linkage switch can be driven to be opened or closed at the same time, and then the door plate can be opened or closed; the whole process can be completed in one step quickly and conveniently.

Description

Technical Field

[0001] The invention relates to a protective door, in particular to a special ventilation and waterproof door for cable trenches. Background Art

[0002] Cable trenches are underground facilities used to lay and protect power and communication cables, typically constructed of concrete, brick, or prefabricated components. Cable trench enclosures are used to enclose cable trenches, providing safety, fire and smoke protection, waterproofing, moisture-proofing, ventilation, and heat dissipation, as well as protecting the cables.

[0003] Safety protection: Prevent people from accidentally entering the cable trench, avoiding safety accidents such as electric shock and tripping. It can also prevent small animals from entering the cable trench and chewing the cables, affecting the normal operation of the cables.

[0004] Fire and smoke isolation: In the event of a fire, it can prevent the spread of fire and smoke in the cable trench, buy time for personnel evacuation and fire rescue, and reduce the damage of the fire to cables and other equipment.

[0005] Waterproof and moisture-proof: effectively prevent rainwater, groundwater, etc. from entering the cable trench, prevent the cable from insulation damage, short circuit and other faults due to moisture, and extend the service life of the cable.

[0006] Ventilation and heat dissipation: When the cable is energized, it will generate heat, which will increase the temperature of the cable trench and accelerate the aging of the cable. The ventilation and heat dissipation system will speed up the exchange of air inside and outside the cable trench and reduce the temperature inside the cable trench.

[0007] Protect cables: prevent cables from external mechanical damage, chemical corrosion, etc., keep the cable trench clean and dry, and provide a good operating environment for the cables.

[0008] However, existing cable trench enclosed doors have several drawbacks. For example, their thick steel plates, sometimes filled with cement, result in a heavy door, making opening cumbersome and difficult. Furthermore, the locking mechanisms of existing doors are typically limited to one or two positions, leaving room for improvement in sealing. Given the frequent inspections required for cable trenches, cable trench doors frequently open and close. Therefore, there is an urgent need for a ventilated, waterproof door that is easy to open, lightweight, and provides excellent sealing for easy inspection. Summary of the Invention

[0009] The main purpose of the present invention is to provide a special ventilation and waterproof door for cable trenches to solve the problems raised in the related art.

[0010] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a special ventilation and waterproof door for cable trench is provided, comprising a door frame, a door panel hinged in the door frame, and a transmission mechanism arranged on the surface of the door panel for controlling the opening and closing of the door panel, the transmission mechanism comprising a central shaft running through the door panel and rotatably connected to the door panel, the central shaft being connected to a left long connecting rod and a right long connecting rod respectively through a gear set, a left lower linkage switch being provided on one side of the left long connecting rod, and a right upper linkage switch being provided on one side of the right long connecting rod, the rotation of the central shaft simultaneously drives the left long connecting rod and the right long connecting rod to swing, and the left lower linkage switch and the right upper linkage switch are simultaneously driven to be opened or closed through the swing of the left long connecting rod and the right long connecting rod.

[0011] Furthermore, the gear set includes a gear rotatably arranged on the outer surface of the door panel and a circle of teeth arranged on the central shaft. The gear is meshed with the teeth on the central shaft, and the gear is rotatably connected to the left long connecting rod and the right long connecting rod. A plurality of locking blocks are fixedly connected to the four sides of the door frame near the door panel; an outer hand wheel is fixedly provided at the outer end of the central shaft, and an inner hand wheel is fixedly provided at the inner end.

[0012] Furthermore, the lower left linkage switch is composed of a left linkage switch and a lower linkage switch.

[0013] Furthermore, the left linkage switch includes a left transmission rod, and the upper and lower ends of the left transmission rod are respectively rotatably connected to the upper left control block and the lower left control block. One end of the upper left control block and the lower left control block are both rotatably connected to the left transmission rod, and the other end is used to fit into or away from the locking block.

[0014] Furthermore, the lower linkage switch includes a left short connecting rod rotatably arranged on one side of the left transmission rod near the bottom end, the end of the left short connecting rod is rotatably connected to the lower rotating block, the lower rotating block is rotatably connected to the lower short connecting rod, the lower short connecting rod is rotatably connected to the lower transmission rod, and the two ends of the lower transmission rod are rotatably connected to the lower right control block and the lower left control block respectively; one end of the lower right control block and the lower left control block are both rotatably connected to the lower transmission rod, and the other end is used to fit into or away from the locking block.

[0015] Furthermore, the right upper linkage switch is composed of a right linkage switch and an upper linkage switch.

[0016] Furthermore, the right linkage switch includes a right transmission rod, and the upper and lower ends of the right transmission rod are rotatably connected to a right lower control block and a right upper control block respectively.

[0017] Furthermore, the upper linkage switch includes a right short link rotatably arranged on one side of the right transmission rod near the top position, the end of the right short link is rotatably connected to the upper rotation block, the upper rotation block is rotatably connected to the upper short link, the upper short link is rotatably connected to the upper transmission rod, and the two ends of the upper transmission rod are rotatably connected to the upper left control block and the upper right control block respectively, one end of the upper left control block and the upper right control block are both rotatably connected to the upper transmission rod, and the other end is used to fit into or away from the locking block.

[0018] Furthermore, the middle positions of the upper left control block, lower left control block, lower right control block, upper right control block, upper left control block, upper right control block, lower right control block and lower left control block are all rotatably arranged on the door panel via a rotating shaft.

[0019] Furthermore, one end of the upper rotating block close to the center of the door panel is rotatably arranged on the door panel via a rotating shaft, and the two sides of the other end are rotatably connected by the rotating shaft and the right short connecting rod and the upper short connecting rod respectively. One end of the lower rotating block close to the center of the door panel is rotatably arranged on the door panel via a rotating shaft, and the two sides of the other end are rotatably connected by the rotating shaft and the left short connecting rod and the lower short connecting rod respectively.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a handwheel on the door panel, and the central shaft is driven to rotate by rotating the handwheel. The central shaft drives the left long connecting rod and the right long connecting rod to swing at the same time through the gear set, thereby simultaneously driving the left lower linkage switch and the right upper linkage switch to open or close, thereby realizing the opening or closing of the door panel. The entire opening and closing process can be completed in one step, which is quick and convenient.

[0021] 2. The present invention cleverly adopts a combination of different connecting mechanisms without using conventional fillers or explosion-proof materials, thereby reducing weight, ensuring easy operation, lightweight, and convenient inspection and ventilation and heat dissipation.

[0022] 3. The present invention can quickly lock the waterproof door in four directions through overall linkage, effectively improving the waterproof sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the present invention; Figure 2 It is a front schematic diagram of the present invention; Figure 3 It is a reverse schematic diagram of the present invention; Figure 4 It is the AA cross-sectional view of the present invention.

[0024] Reference numerals: 1. Door frame; 2. Door panel; 3. Left transmission rod; 31. Left long connecting rod; 32. Left short connecting rod; 33. Upper left control block; 34. Lower left control block; 4. Right transmission rod; 41. Right long connecting rod; 42. Right short connecting rod; 43. Lower right control block; 44. Upper right control block; 5. Upper transmission rod; 51. Upper swivel block; 52. Upper short connecting rod; 53. Upper left control block; 54. Upper right control block; 6. Lower transmission rod; 61. Lower swivel block; 62. Lower short connecting rod; 63. Lower right control block; 64. Lower left control block; 8. Center shaft; 9. Outer handwheel; 10. Gear; 11. Hinge; 12. Inner handwheel; 13. Lock block. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0026] like Figures 1 to 4 As shown, this embodiment provides a cable trench dedicated ventilation and waterproof door, including a door frame 1, a door panel 2 hinged in the door frame 1, and a transmission mechanism provided on the surface of the door panel 2 for controlling the opening and closing of the door panel 2, as shown in FIG. Figure 3 As shown, the door panel 2 is rotatably connected to the door frame 1 via two hinges 11 .

[0027] The transmission mechanism includes a central shaft 8 that passes through the door panel 2 and is rotatably connected to the door panel 2. The central shaft 8 is connected to the left long link 31 and the right long link 41 through a gear set. A left lower linkage switch is provided on one side of the left long link 31, and a right upper linkage switch is provided on one side of the right long link 41. Rotating the central shaft 8 simultaneously drives the left long link 31 and the right long link 41 to swing, and the swinging of the left long link 31 and the right long link 41 simultaneously drives the left lower linkage switch and the right upper linkage switch to be opened or closed.

[0028] The gear set includes a gear 10 that is rotatably arranged on the outer surface of the door panel 2 and a circle of teeth arranged on the central shaft 8. The gear 10 is meshed with the teeth on the central shaft 8. The outer handwheel 9 or the inner handwheel 12 is rotated, and the gear 10 can be driven to rotate through the teeth. The gear 10 and the left long connecting rod 31 and the right long connecting rod 41 are all rotatably connected. Eight lock blocks 13 are fixedly connected to the four sides of the door frame 1 near the door panel 2; the outer end of the central shaft 8 is fixed with an outer handwheel 9, and the inner end is fixed with an inner handwheel 12.

[0029] The left lower linkage switch is composed of a left linkage switch and a lower linkage switch. The left linkage switch includes a left transmission rod 3, the upper and lower ends of which are rotatably connected to an upper left control block 33 and a lower left control block 34, respectively. One end of the upper left control block 33 and the lower left control block 34 are both rotatably connected to the left transmission rod 3, and the other ends are used to contact or move away from the locking block 13.

[0030] The lower linkage switch includes a left short link 32 that is rotatably arranged on one side of the left transmission rod 3 near the bottom end. The end of the left short link 32 is rotatably connected to the lower rotating block 61, and the lower rotating block 61 is rotatably connected to the lower short link 62. The lower short link 62 is rotatably connected to the lower transmission rod 6. The two ends of the lower transmission rod 6 are respectively rotatably connected to the lower right control block 63 and the lower left control block 64. One end of the lower right control block 63 and the lower left control block 64 are both rotatably connected to the lower transmission rod 6, and the other end is used to fit into or away from the locking block 13.

[0031] The right upper linkage switch is composed of a right linkage switch and an upper linkage switch. The right linkage switch comprises a right transmission rod 4, and the upper and lower ends of the right transmission rod 4 are respectively rotatably connected to a right lower control block 43 and a right upper control block 44.

[0032] The upper linkage switch includes a right short link 42 that is rotatably arranged on one side of the right transmission rod 4 near the top, the end of the right short link 42 is rotatably connected to the upper rotating block 51, the upper rotating block 51 is rotatably connected to the upper short link 52, the upper short link 52 is rotatably connected to the upper transmission rod 5, and the two ends of the upper transmission rod 5 are rotatably connected to the upper left control block 53 and the upper right control block 54 respectively. One end of the upper left control block 53 and the upper right control block 54 are both rotatably connected to the upper transmission rod 5, and the other end is used to fit into or away from the locking block 13.

[0033] The middle positions of the upper left control block 33, the lower left control block 34, the lower right control block 43, the upper right control block 44, the upper left control block 53, the upper right control block 54, the lower right control block 63 and the lower left control block 64 are all rotatably arranged on the door panel 2 via a rotating shaft.

[0034] One end of the upper rotating block 51 close to the center of the door panel 2 is rotatably provided on the door panel 2 through a rotating shaft, and the two sides of the other end are rotatably connected by the rotating shaft and the right short link 42 and the upper short link 52 respectively. One end of the lower rotating block 61 close to the center of the door panel 2 is rotatably provided on the door panel 2 through a rotating shaft, and the two sides of the other end are rotatably connected by the rotating shaft and the left short link 32 and the lower short link 62 respectively.

[0035] The initial state is when the door panel 2 is closed, such as Figure 2 shown.

[0036] Turn the outer hand wheel 9 or the inner hand wheel 12 to drive the gear 10 to rotate in the counterclockwise direction. The gear 10 pulls the right long connecting rod 41 to move upward and pulls the left long connecting rod 31 to move downward. The right long connecting rod 41 drives the right transmission rod 4 to move upward, and the left long connecting rod 31 drives the left transmission rod 3 to move downward. The right transmission rod 4 pushes the lower right control block 43 and the upper right control block 44 to rotate in the clockwise direction, so that the ends of the lower right control block 43 and the upper right control block 44 are away from the locking block 13. The left transmission rod 3 pushes the upper left control block 33 and the lower left control block 34 to rotate in the clockwise direction, so that the ends of the upper left control block 33 and the lower left control block 34 are away from the locking block 13. Move up The right transmission rod 4 pushes the upper transmission rod 5 to move to the left through the right short connecting rod 42, the upper rotating block 51 and the upper short connecting rod 52. The left-moving upper transmission rod 5 pushes the upper left control block 53 and the upper right control block 54 to rotate in the clockwise direction, so that the ends of the upper left control block 53 and the upper right control block 54 are away from the locking block 13; the downward-moving left transmission rod 3 pushes the lower transmission rod 6 to move to the right through the left short connecting rod 32, the lower rotating block 61 and the lower short connecting rod 62. The right-moving lower transmission rod 6 drives the lower right control block 63 and the lower left control block 64 to rotate in the clockwise direction, so that the ends of the lower right control block 63 and the lower left control block 64 are away from the locking block 13; thereby, the door panel 2 can be opened. After pushing the door panel 2 flush with the door frame 1, rotate the outer hand wheel 9 or the inner hand wheel 12 in the opposite direction so that the upper left control block 33, the lower left control block 34, the lower right control block 43, the upper right control block 44, the upper left control block 53, the upper right control block 54, the lower right control block 63 and the lower left control block 64 are attached to the lock block 13, and the door panel 2 is closed.

[0037] In the present invention, the side where the locking block 13 contacts each control block has a certain tilt angle. This design facilitates gradual locking when each control block contacts the locking block 13, ultimately making the waterproof door more sealed.

[0038] The present invention provides a handwheel on the door panel, and the central shaft is driven to rotate by rotating the handwheel. The central shaft drives the left long connecting rod and the right long connecting rod to swing at the same time through the gear set, thereby simultaneously driving the left lower linkage switch and the right upper linkage switch to open or close, thereby realizing the opening or closing of the door panel. The entire opening and closing process can be completed in one step, which is quick and convenient.

[0039] The present invention adopts a combination of different connecting mechanisms and does not use conventional fillers or explosion-proof materials, thereby ensuring easy operation, light weight, and convenient inspection and ventilation and heat dissipation.

[0040] The present invention can quickly lock the waterproof door in four directions through an overall linkage method, thereby effectively improving the waterproof sealing performance.

[0041] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A special ventilation and waterproof door for cable trenches, comprising a door frame (1), a door panel (2) in the door frame (1), and a transmission mechanism provided on the surface of the door panel (2) for controlling the opening and closing of the door panel (2), characterized in that The transmission mechanism includes a central shaft (8) that passes through the door panel (2) and is rotatably connected to the door panel (2). The central shaft (8) is respectively connected to a left long connecting rod (31) and a right long connecting rod (41) through a gear set. A left lower linkage switch is provided on one side of the left long connecting rod (31), and a right upper linkage switch is provided on one side of the right long connecting rod (41). Rotating the central shaft (8) simultaneously drives the left long connecting rod (31) and the right long connecting rod (41) to swing. The swing of the left long connecting rod (31) and the right long connecting rod (41) simultaneously drives the left lower linkage switch and the right upper linkage switch to be opened or closed.

2. The cable trench special ventilation and waterproof door according to claim 1, characterized in that: The gear set comprises a gear (10) rotatably arranged on the outer surface of the door panel (2) and a circle of teeth arranged on the central shaft (8), the gear (10) and the teeth on the central shaft (8) meshing, and the gear (10) and the left long connecting rod (31) and the right long connecting rod (41) are all rotatably connected; a plurality of locking blocks (13) are fixedly connected to the four sides of the door frame (1) near the door panel (2); an outer hand wheel (9) is fixedly provided at the outer end of the central shaft (8), and an inner hand wheel (12) is fixedly provided at the inner end.

3. The cable trench dedicated ventilation and waterproof door according to claim 1, characterized in that: The lower left linkage switch is composed of a left linkage switch and a lower linkage switch.

4. The cable trench dedicated ventilation and waterproof door according to claim 3, characterized in that: The left linkage switch comprises a left transmission rod (3), wherein the upper and lower ends of the left transmission rod (3) are rotatably connected to an upper left control block (33) and a lower left control block (34), respectively; one end of each of the upper left control block (33) and the lower left control block (34) is rotatably connected to the left transmission rod (3), and the other end is used to fit into or away from the locking block (13).

5. The cable trench special ventilation and waterproof door according to claim 4, characterized in that: The lower linkage switch comprises a left short link (32) rotatably arranged at a position near the bottom end of one side of the left transmission rod (3); the end of the left short link (32) is rotatably connected to a lower rotation block (61); the lower rotation block (61) is rotatably connected to a lower short link (62); the lower short link (62) is rotatably connected to a lower transmission rod (6); and both ends of the lower transmission rod (6) are rotatably connected to a lower right control block (63) and a lower left control block (64); one end of each of the lower right control block (63) and the lower left control block (64) is rotatably connected to the lower transmission rod (6), and the other end is used to fit into or away from the locking block (13).

6. The cable trench special ventilation and waterproof door according to claim 5, characterized in that: The right upper linkage switch is composed of a right linkage switch and an upper linkage switch.

7. The cable trench dedicated ventilation and waterproof door according to claim 6, characterized in that: The right linkage switch comprises a right transmission rod (4), wherein the upper and lower ends of the right transmission rod (4) are rotatably connected to a right lower control block (43) and a right upper control block (44).

8. The cable trench special ventilation and waterproof door according to claim 6, characterized in that: The upper linkage switch comprises a right short link (42) rotatably arranged at a position near the top end of one side of the right transmission rod (4); the end of the right short link (42) is rotatably connected to an upper rotation block (51); the upper rotation block (51) is rotatably connected to an upper short link (52); the upper short link (52) is rotatably connected to an upper transmission rod (5); and both ends of the upper transmission rod (5) are rotatably connected to an upper left control block (53) and an upper right control block (54); one end of each of the upper left control block (53) and the upper right control block (54) is rotatably connected to the upper transmission rod (5), and the other end is used to fit into or away from the locking block (13).

9. The cable trench dedicated ventilation and waterproof door according to claim 8, characterized in that: The middle positions of the upper left control block (33), the lower left control block (34), the lower right control block (43), the upper right control block (44), the upper left control block (53), the upper right control block (54), the lower right control block (63) and the lower left control block (64) are all rotatably arranged on the door panel (2) via a rotating shaft.

10. The cable trench dedicated ventilation and waterproof door according to claim 6, characterized in that: One end of the upper rotating block (51) close to the center of the door panel (2) is rotatably mounted on the door panel (2) via a rotating shaft, and two sides of the other end are rotatably connected via the rotating shaft and the right short connecting rod (42) and the upper short connecting rod (52). One end of the lower rotating block (61) close to the center of the door panel (2) is rotatably mounted on the door panel (2) via a rotating shaft, and two sides of the other end are rotatably connected via the rotating shaft and the left short connecting rod (32) and the lower short connecting rod (62).

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