A kind of city pipe gallery hand-operated electric protective closed manhole cover

Abstract

A manual electric protective sealed manhole cover for urban pipe corridors, comprising a manhole frame, a manhole cover, an electric drive device, a first transmission mechanism, a rotating shaft, a second transmission mechanism, a movable seat, a connecting mechanism and a manual drive device; the output end of the electric drive device is connected to one end of the first transmission mechanism, the other end of the first transmission mechanism is connected to the rotating shaft, the first transmission mechanism is connected to the second transmission mechanism through the rotating shaft, one end of the connecting mechanism is connected to the movable seat, the other end of the connecting mechanism is connected to the manhole frame, the manhole cover is hinged to the manhole frame, and the manhole cover is opened and closed by the movement of the movable seat. Based on the above content, the present invention proposes a manual electric protective sealed manhole cover for urban pipe corridors, which solves the problem that when the existing protective sealed manhole cover adopts a hydraulic system, the hydraulic system and pipelines need to be regularly maintained, the hydraulic oil needs to be regularly replaced, and the maintenance workload is large and the cost is high; and it solves the problem that when the non-manual drive device fails, there is a potential safety hazard.

Description

Technical Field

[0001] The invention relates to the technical field of protective sealed manhole covers for urban pipe corridors, and in particular to a manual electric protective sealed manhole cover for urban pipe corridors. Background Art

[0002] In order to ensure the convenience of entry and exit of personnel and materials, comprehensive pipeline corridors are usually equipped with inspection ports, emergency entrances and exits, and feeding ports. In particular, the inspection ports and emergency escape ports of comprehensive pipeline corridors that meet the requirements of civil air defense are equipped with protective and sealed manhole covers. The protective and sealed manhole covers have the protective and sealing functions of resisting shock waves and isolating poisonous gases in wartime, and have the functions of preventing theft and urban flooding in peacetime. The cover weighs about 200KG~400KG.

[0003] During maintenance or emergency escape, the protective sealed manhole cover is opened, and personnel enter and exit the pipe gallery through the wellhead. Existing protective sealed manhole covers are usually flipped open or closed by the extension and contraction of the piston rod of the hydraulic cylinder to achieve emergency escape. The hydraulic system in this system consists of a hydraulic pump station, a hydraulic solenoid valve, a hydraulic pipeline, a hydraulic cylinder, etc. There are many control valves and pipelines, the system is complex and occupies a large space. The hydraulic system and pipelines need regular maintenance, and the hydraulic oil needs to be replaced regularly, which requires a lot of maintenance and is costly.

[0004] In addition, in the prior art, when the non-manual driving device fails, the manhole cover cannot be opened, which may easily lead to safety hazards. Summary of the invention

[0005] The purpose of the present invention is to propose a manual electric protective sealed manhole cover for urban pipe corridors, which solves the problem that when the existing protective sealed manhole covers adopt a hydraulic system, the hydraulic system and pipelines need to be regularly maintained, the hydraulic oil needs to be regularly replaced, and the maintenance workload is large and the cost is high; and it also solves the problem that safety hazards are prone to occur when the non-manual drive device fails.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A manual electric protective closed manhole cover for a city pipe gallery, comprising a manhole frame, a manhole cover, an electric drive device, a first transmission mechanism, a rotating shaft, a second transmission mechanism, a moving seat, a connecting mechanism and a manual drive device;

[0008] The electric drive device is installed on the manhole cover, the output end of the electric drive device is connected to one end of the first transmission mechanism, the other end of the first transmission mechanism is connected to the rotating shaft, and the electric drive device is used to drive the rotating shaft to rotate along its own axis through the first transmission mechanism;

[0009] The electric drive device is provided with an electromagnetic clutch assembly, and the electromagnetic clutch assembly is used to control the disconnection and connection between the output end of the electric drive device and the first transmission mechanism;

[0010] The first transmission mechanism is connected to the second transmission mechanism via the rotating shaft, the second transmission mechanism is equipped with the moving seat, and the moving seat can move along the length direction of the rotating shaft;

[0011] One end of the connecting mechanism is connected to the moving seat, the other end of the connecting mechanism is connected to the well frame, the well cover is hinged to the well frame, and the well cover is opened and closed by the movement of the moving seat;

[0012] The output end of the manual driving device is connected to one end of the first transmission mechanism, and the manual driving device is used to manually drive the rotating shaft to rotate along its own axis through the first transmission mechanism.

[0013] Further, the manual drive device includes a manual gear box, a hand wheel, a flexible shaft and a flexible shaft joint;

[0014] The hand wheel is detachably mounted on the front side of the manual gear box;

[0015] One end of the flexible shaft is connected to the side of the manual gear box, and the other end of the flexible shaft is connected to the first transmission mechanism;

[0016] The manual gear box drives the flexible shaft joint to rotate through the flexible shaft.

[0017] Specifically, the manhole cover includes a manhole cover top plate, a manhole cover body, a manhole cover bottom plate and an intermediate fixing plate;

[0018] The top of the manhole cover body is installed with the manhole cover top plate, and the bottom of the manhole cover body is installed with the manhole cover bottom plate;

[0019] The intermediate fixing plate is installed on the bottom surface of the manhole cover top plate, and the intermediate fixing plate is arranged inside the manhole cover body;

[0020] The first transmission mechanism includes a first bevel gear, a second bevel gear, a third bevel gear, a transmission shaft, a fourth bevel gear and a bearing seat;

[0021] The first bevel gear is fixed to the bottom surface of the manhole cover top plate, and the first bevel gear is connected to the output end of the electric drive device;

[0022] The second bevel gear is fixed to the top surface of the manhole cover bottom plate, and the second bevel gear is connected to the flexible shaft joint;

[0023] The third bevel gear is fixed to the bottom surface of the manhole cover top plate, and the third bevel gear, the first bevel gear and the second bevel gear are meshed with each other;

[0024] One end of the transmission shaft is connected to the third bevel gear, the other end of the transmission shaft is connected to the fourth bevel gear, and the other end of the transmission shaft is installed with the bearing seat, and the bearing seat is fixed to the intermediate fixing plate;

[0025] The rotating shaft is installed on the middle fixed plate, and the shaft body of the rotating shaft is sleeved with a fifth bevel gear, and the fifth bevel gear is meshed with the fourth bevel gear.

[0026] Furthermore, the manhole cover further comprises a bottom fixing plate, and the bottom fixing plate is mounted on the bottom surface of the manhole cover top plate;

[0027] The second transmission mechanism includes a main transmission gear, a secondary transmission gear and a screw rod;

[0028] The main transmission gear and the auxiliary transmission gear are both mounted on the bottom fixed plate, the main transmission gear is meshed with the auxiliary transmission gear, the main transmission gear is sleeved on the rotating shaft, and the auxiliary transmission gear is sleeved on the screw rod;

[0029] One end of the screw rod is mounted on the middle fixing plate, and the other end of the screw rod is mounted on the bottom fixing plate;

[0030] The moving seat is installed on the screw rod, and the moving seat can move on the screw rod.

[0031] In some embodiments, a guide rod is further included, one end of which is mounted on the middle fixing plate, the other end of which is mounted on the bottom fixing plate, and the guide rod passes through the moving seat.

[0032] Preferably, the connecting mechanism comprises a connecting rod, a first hinge shaft, a second hinge shaft and a hinge seat;

[0033] The hinge seat is fixed to the well frame, the second hinge shaft is installed on the hinge seat, and the first hinge shaft is installed on the moving seat;

[0034] One end of the connecting rod is connected to the first hinge shaft, and the other end of the connecting rod is connected to the second hinge shaft.

[0035] In some embodiments, a support mechanism is further included, wherein the support mechanism includes a fixed seat, a gas spring and a spring seat;

[0036] The fixing seat passes through the bottom plate of the manhole cover and is fixed to the internal frame of the manhole cover body. The spring seat is fixed to the manhole frame. One end of the gas spring is hinged to the fixing seat, and the other end of the gas spring is hinged to the spring seat.

[0037] Furthermore, a travel groove is provided at the hinged end between the gas spring and the spring seat.

[0038] Specifically, the outer periphery of the manhole cover bottom plate is provided with an embedded pressure strip;

[0039] The well frame comprises a well frame top plate, a well frame body, a well frame bottom plate and a well frame fixing seat;

[0040] The well frame top plate is installed on the top of the well frame body, and the well frame bottom plate is installed on the bottom of the well frame body;

[0041] A main sealing strip is provided on the inner side of the well frame body, and the bottom of the main sealing strip is attached to the top surface of the well frame bottom plate;

[0042] The well frame fixing seat passes through the well frame bottom plate, and the well frame fixing seat is installed on the well frame main body.

[0043] Furthermore, a secondary sealing strip is provided on the inner side of the well frame top plate, and the bottom of the secondary sealing strip is attached to the top surface of the well frame body.

[0044] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0045] By using electric drive devices instead of hydraulic drive, the need for regular maintenance and the need for regular replacement of hydraulic oil, which results in high maintenance workload and high costs, is avoided, thus achieving the effect of cost saving;

[0046] The manual drive device can be used to prevent the manhole cover from being unable to open when the electric drive device fails, thereby achieving the effect of improving the safety of the manual and electric protective closed manhole cover in urban pipe corridors.

[0047] Through the embedded pressure strips and main sealing strips, it has the protective sealing function of isolating poisonous gas in wartime, and has the function of protecting urban waterlogging in peacetime, preventing waterlogging from backflowing into the pipe gallery and soaking and damaging the internal pipelines and equipment, so as to improve the sealing and safety of the manual and electric protective closed manhole covers in urban pipe gallery;

[0048] The auxiliary sealing strip is used to prevent dust, mud, fallen leaves and other debris from entering the main body of the manhole frame, thereby preventing these debris from seeping into the gap between the manhole frame and the manhole cover, causing the manhole cover to be stuck or rusted, thereby achieving the effect of increasing the service life of the manual and electric protective closed manhole cover in urban pipe corridors. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0050] Figure 2 It is a schematic structural diagram of a manhole frame and a manhole cover in one embodiment of the present invention;

[0051] Figure 3 is a schematic structural diagram of a manual driving device according to one embodiment of the present invention;

[0052] Figure 4 is a schematic structural diagram of a first transmission mechanism and a second transmission mechanism of one embodiment of the present invention;

[0053] Among them: well frame 1, well frame top plate 11, auxiliary sealing strip 111, well frame body 12, main sealing strip 121, well frame bottom plate 13, well frame fixing seat 14, well cover 2, well cover top plate 21, well cover body 22, well cover bottom plate 23, embedding strip 231, middle fixing plate 24, bottom fixing plate 25, guide rod 26, electric drive device 3, electromagnetic clutch assembly 31, first transmission mechanism 4, first bevel gear 41, second bevel gear 42, third bevel gear 43, transmission shaft 44 and , fourth bevel gear 45, bearing seat 46, rotating shaft 5, fifth bevel gear 51, second transmission mechanism 6, main transmission gear 61, auxiliary transmission gear 62, screw 63, moving seat 7, connecting mechanism 8, connecting rod 81, first articulated shaft 82, second articulated shaft 83, articulated seat 84, manual drive device 9, manual gear box 91, hand wheel 92, flexible shaft 93, flexible shaft joint 94, supporting mechanism 10, fixed seat 101, gas spring 102, spring seat 103, travel groove 104. DETAILED DESCRIPTION

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", "inner end", "outer end", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, which are used to distinguish and describe the features, without distinction of order or importance. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0056] In one embodiment of the present invention, Figure 1-4 As shown, a manual electric protective closed manhole cover for a city pipe gallery comprises a manhole frame 1, a manhole cover 2, an electric drive device 3, a first transmission mechanism 4, a rotating shaft 5, a second transmission mechanism 6, a moving seat 7, a connecting mechanism 8 and a manual drive device 9;

[0057] The electric drive device 3 is installed on the manhole cover 2, the output end of the electric drive device 3 is connected to one end of the first transmission mechanism 4, the other end of the first transmission mechanism 4 is connected to the rotating shaft 5, and the electric drive device 3 is used to drive the rotating shaft 5 to rotate along its own axis through the first transmission mechanism 4;

[0058] The electric drive device 3 is provided with an electromagnetic clutch component 31, and the electromagnetic clutch component 31 is used to control the disconnection and connection between the output end of the electric drive device 3 and the first transmission mechanism 4;

[0059] The first transmission mechanism 4 is connected to the second transmission mechanism 6 via the rotating shaft 5, and the second transmission mechanism 6 is equipped with the moving seat 7, and the moving seat 7 can move along the length direction of the rotating shaft 5;

[0060] One end of the connecting mechanism 8 is connected to the moving seat 7, and the other end of the connecting mechanism 8 is connected to the well frame 1. The well cover 2 is hinged to the well frame 1, and the well cover 2 is opened and closed by the movement of the moving seat 7.

[0061] The output end of the manual driving device 9 is connected to one end of the first transmission mechanism 4 , and the manual driving device 9 is used to manually drive the rotating shaft 5 to rotate along its own axis through the first transmission mechanism 4 .

[0062] When the manhole cover needs to be opened, the electric drive device 3 or the manual drive device 9 drives the rotating shaft 5 to rotate through the first transmission mechanism 4, and the rotating shaft 5 drives the moving seat 7 to move along the length direction of the rotating shaft 5 through the second transmission mechanism 6. One end of the connecting mechanism 8 is connected to the moving seat 7, and the other end of the connecting mechanism 8 is connected to the manhole frame 1. The manhole cover 2 is hinged to the manhole frame 1, and the manhole cover 2 is opened and closed by the movement of the moving seat 7, thereby realizing the opening or closing of the manhole cover 2. In this embodiment, the electric drive device 3 is a driving motor, and an electric drive working mode is adopted, which solves the problem that when the existing protective sealed manhole cover adopts a hydraulic system, the hydraulic system and pipelines need to be regularly maintained, the hydraulic oil needs to be replaced regularly, and the maintenance workload is large and the cost is high, thereby achieving the effect of saving maintenance costs. Moreover, the output end of the electric drive device 3 is provided with the electromagnetic clutch component 31, and the electromagnetic clutch component 31 has the function of being energized and attracted, and being de-energized and disconnected. When the electric drive device 3 is energized and working, the electromagnetic clutch component 31 is energized and attracted, and the output end of the electric drive device 3 is connected to the first transmission mechanism 4. When the electric drive device 3 is abnormal, such as power failure, the electromagnetic clutch component 31 is de-energized and disconnected, and the output end of the electric drive device 3 is disconnected from the first transmission mechanism 4. At this time, the manhole cover 2 can be manually driven to open and close by the manual drive device 9. It should be noted that the manual drive device 9 is located below the manhole frame 1 to ensure the normal opening and closing of the manhole cover 2 and avoid the situation where the manhole cover 2 cannot be opened during power failure, thereby achieving the effect of improving the safety performance of the manual electric protective closed manhole cover of the urban pipe gallery.

[0063] like Figure 3 As shown, the manual drive device 9 includes a manual gear box 91, a hand wheel 92, a flexible shaft 93 and a flexible shaft joint 94;

[0064] The hand wheel 92 is detachably mounted on the front side of the manual gear box 91;

[0065] One end of the flexible shaft 93 is connected to the side of the manual gear box 91, and the other end of the flexible shaft 93 is connected to the first transmission mechanism 4;

[0066] The manual gear box 91 drives the flexible shaft joint 94 to rotate through the flexible shaft 93 .

[0067] In this embodiment, the rear of the manual gear box 91 is fixed on the wall of the manhole cover passage, one end of the flexible shaft 93 is connected to the side of the manual gear box 91, and the other end of the flexible shaft 93 is connected to the first transmission mechanism 4; when the manhole cover 2 needs to be opened and closed manually, the hand wheel 92 is rotated to rotate the flexible shaft joint 94 through the flexible shaft 93, so that the manhole cover 2 can be opened and closed manually, avoiding the inability to open the manhole cover 2 through the electric drive device 3 when the power is off.

[0068] like Figure 2 As shown, the manhole cover 2 includes a manhole cover top plate 21, a manhole cover body 22, a manhole cover bottom plate 23 and an intermediate fixing plate 24;

[0069] The top of the manhole cover body 22 is provided with the manhole cover top plate 21, and the bottom of the manhole cover body 22 is provided with the manhole cover bottom plate 23;

[0070] The intermediate fixing plate 24 is installed on the bottom surface of the manhole cover top plate 21, and the intermediate fixing plate 24 is arranged inside the manhole cover body 22;

[0071] The first transmission mechanism 4 includes a first bevel gear 41, a second bevel gear 42, a third bevel gear 43, a transmission shaft 44, a fourth bevel gear 45 and a bearing seat 46;

[0072] The first bevel gear 41 is fixed to the bottom surface of the manhole cover top plate 21, and the first bevel gear 41 is connected to the output end of the electric drive device 3;

[0073] The second bevel gear 42 is fixed to the top surface of the manhole cover bottom plate 23, and the second bevel gear 42 is connected to the flexible shaft joint 94;

[0074] The third bevel gear 43 is fixed to the bottom surface of the manhole cover top plate 21, and the third bevel gear 43, the first bevel gear 41 and the second bevel gear 42 are meshed with each other;

[0075] One end of the transmission shaft 44 is connected to the third bevel gear 43, the other end of the transmission shaft 44 is connected to the fourth bevel gear 45, and the other end of the transmission shaft 44 is installed with the bearing seat 46, and the bearing seat 46 is fixed to the intermediate fixing plate 24;

[0076] The rotating shaft 5 is mounted on the intermediate fixing plate 24 . The shaft body of the rotating shaft 5 is sleeved with a fifth bevel gear 51 . The fifth bevel gear 51 is meshed with the fourth bevel gear 45 .

[0077] During operation, the first bevel gear 41 or the second bevel gear 42 drives the third bevel gear 43 to rotate, and the third bevel gear 43 rotates the fourth bevel gear 45 through the transmission shaft 44. Because the fourth bevel gear 45 is meshed with the fifth bevel gear 51, and the fifth bevel gear 51 is installed on the rotating shaft 5, the rotating shaft 5 can rotate on its own. The first bevel gear 41, the second bevel gear 42 and the third bevel gear 43 are meshed with each other in pairs. The third bevel gear 43 can work regardless of electric drive or manual drive, and the transmission structure is stable and reliable, and the transmission accuracy is high. During installation, the first bevel gear 41 and the third bevel gear 43 are both installed on the bottom surface of the manhole cover top plate 21, the second bevel gear 42 is installed on the top surface of the manhole cover bottom plate, the intermediate fixed plate 24 is installed on the bottom surface of the manhole cover top plate 21, and the rotating shaft 5 is installed on the intermediate fixed plate 24. Specifically, the rotating shaft 5 passes through the intermediate fixed plate 24, and the fifth bevel gear 51 is located inside the intermediate fixed plate 24. This installation method has a stable and reliable structure and is not easy to loosen, thereby achieving the effect of improving the structural stability of the first transmission mechanism 4.

[0078] like Figure 2 and Figure 4 As shown, the manhole cover 2 further includes a bottom fixing plate 25, and the bottom fixing plate 25 is installed on the bottom surface of the manhole cover top plate 21;

[0079] The second transmission mechanism 6 includes a main transmission gear 61, a secondary transmission gear 62 and a screw rod 63;

[0080] The main transmission gear 61 and the auxiliary transmission gear 62 are both mounted on the bottom fixing plate 25, the main transmission gear 61 is meshed with the auxiliary transmission gear 62, the main transmission gear 61 is sleeved on the rotating shaft 5, and the auxiliary transmission gear 62 is sleeved on the screw rod 63;

[0081] One end of the screw rod 63 is mounted on the middle fixing plate 24, and the other end of the screw rod 63 is mounted on the bottom fixing plate 25;

[0082] The moving seat 7 is installed on the screw rod 63 , and the moving seat 7 can move on the screw rod 63 .

[0083] In this embodiment, the number of the screw rod 63 and the number of the auxiliary transmission gear 62 are two respectively. During operation, the rotating shaft 5 rotates, thereby causing the main transmission gear 61 sleeved on the rotating shaft 5 to rotate. Since the main transmission gear 61 is engaged with the auxiliary transmission gear 62, the auxiliary transmission gear 62 rotates, thereby causing the screw rod 63 to rotate. The movable seat 7 is moved on the screw rod 63 through the rotation of the screw rod 63. The transmission structure is beneficial to improving the movement stability of the movable seat 7, so that the manhole cover 2 can be opened and closed smoothly.

[0084] like Figure 4 As shown, it also includes a guide rod 26, one end of the guide rod 26 is installed on the middle fixing plate 24, the other end of the guide rod 26 is installed on the bottom fixing plate 25, and the guide rod 26 passes through the moving seat 7.

[0085] In this embodiment, the number of the guide rods 26 is two. When the moving seat 7 moves, the guide rods 26 play a guiding role to prevent the moving seat 7 from moving out of position and affecting the opening and closing smoothness of the manhole cover 2, thereby achieving the effect of improving the moving smoothness of the moving seat 7.

[0086] like Figure 3 As shown, the connecting mechanism 8 includes a connecting rod 81, a first hinge shaft 82, a second hinge shaft 83 and a hinge seat 84;

[0087] The hinge seat 84 is fixed to the well frame 1, the second hinge shaft 83 is installed on the hinge seat 84, and the first hinge shaft 82 is installed on the moving seat 7;

[0088] One end of the connecting rod 81 is connected to the first hinge shaft 82 , and the other end of the connecting rod 81 is connected to the second hinge shaft 83 .

[0089] In this embodiment, because the hinge seat 84 is fixed to the well frame 1, the second hinge shaft 83 is installed on the hinge seat 84, the first hinge shaft 82 is installed on the movable seat 7, one end of the connecting rod 81 is hinged to the hinge seat 84, and the other end of the connecting rod 81 is hinged to the movable seat 7. When the movable seat 7 moves, the well frame 1 pulls the well cover 2 through the connecting rod 81. The structure is stable and reliable, ensuring the opening and closing stability of the well cover 2, and the first hinge shaft 82 and the second hinge shaft 83 can improve the opening and closing smoothness of the well cover 2.

[0090] like Figure 3 As shown, it also includes a support mechanism 10, and the support mechanism 10 includes a fixed seat 101, a gas spring 102 and a spring seat 103;

[0091] The fixing seat 101 passes through the manhole cover bottom plate 23, and the fixing seat 101 is fixed to the internal frame of the manhole cover body 22, the spring seat 103 is fixed to the manhole frame 1, one end of the gas spring 102 is hinged to the fixing seat 101, and the other end of the gas spring 102 is hinged to the spring seat 103.

[0092] In this embodiment, the gas spring includes a pressure cylinder, a piston rod and a piston. During operation, when the manhole cover 2 is opened, the hinged end of the fixed seat 101 and the hinged end of the spring seat 103 adjust the angles respectively, and then the pressure cylinder drives the piston to push the piston rod out, thereby assisting in pushing the manhole cover 2. Similarly, when the manhole cover 2 is closed, the pressure cylinder drives the piston to retract the piston rod, thereby assisting in pulling the manhole cover 2. The gas spring 102 is used to assist in the opening and closing of the manhole cover 2, thereby achieving the effect of improving the opening and closing stability of the manhole cover 2, and reducing the workload of the connecting rod 81, thereby achieving the effect of increasing the service life of the connecting rod 81.

[0093] like Figure 3 As shown, a travel groove 104 is provided at the hinged end of the gas spring 102 and the spring seat 103 .

[0094] In this embodiment, when the manhole cover 2 is opened and closed, the hinged end of the gas spring 102 and the spring seat 103 is provided with the travel groove 104, which can play a buffering role when the gas spring 102 is working, so that the hinged end of the gas spring 102 and the spring seat 103 can be freely adjusted and moved. Compared with an immovable rigid connection, its service life is longer and it is more durable.

[0095] like Figure 2 As shown, the outer periphery of the manhole cover bottom plate 23 is provided with an embedding strip 231;

[0096] The well frame 1 comprises a well frame top plate 11, a well frame body 12, a well frame bottom plate 13 and a well frame fixing seat 14;

[0097] The well frame top plate 11 is installed on the top of the well frame main body 12, and the well frame bottom plate 13 is installed on the bottom of the well frame main body 12;

[0098] A main sealing strip 121 is provided on the inner side of the well frame body 12, and the bottom of the main sealing strip 121 is attached to the top surface of the well frame bottom plate 13;

[0099] The well frame fixing seat 14 passes through the well frame bottom plate 13 , and the well frame fixing seat 14 is installed on the well frame body 12 .

[0100] In this embodiment, when the manhole cover 2 is closed, the embedding strip 231 of the manhole cover 2 is pressed against the main sealing strip 121. At this time, the combination of the embedding strip 231 and the main sealing strip 121 has good air tightness and water tightness. In wartime, it has a protective sealing function of isolating poisonous gas. In peacetime, it has a function of protecting against urban waterlogging, preventing waterlogging from backflowing into the pipe gallery and soaking and damaging the internal pipelines and equipment, thereby achieving the effect of improving the sealing and safety of the urban pipe gallery manual electric protective closed manhole cover.

[0101] In this embodiment, the hinge seat 84 and the spring seat 103 are both fixed to the well frame fixing seat 14 .

[0102] like Figure 2 As shown, a secondary sealing strip 111 is provided on the inner side of the well frame top plate 11 , and the bottom of the secondary sealing strip 111 is attached to the top surface of the well frame body 12 .

[0103] In this embodiment, the secondary sealing strip 111 is used to prevent dust, mud, fallen leaves and other debris from entering the manhole frame body 12, preventing these debris from penetrating into the gap between the manhole frame and the manhole cover, causing the manhole cover to be stuck or rusted, thereby achieving the effect of increasing the service life of the urban tunnel manual electric protective closed manhole cover.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0105] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A manual electric protective closed manhole cover for urban pipe gallery, characterized in that: It includes a well frame, a well cover, an electric drive device, a first transmission mechanism, a rotating shaft, a second transmission mechanism, a moving seat, a connecting mechanism and a manual drive device; The electric drive device is installed on the manhole cover, the output end of the electric drive device is connected to one end of the first transmission mechanism, the other end of the first transmission mechanism is connected to the rotating shaft, and the electric drive device is used to drive the rotating shaft to rotate along its own axis through the first transmission mechanism; The electric drive device is provided with an electromagnetic clutch assembly, and the electromagnetic clutch assembly is used to control the disconnection and connection between the output end of the electric drive device and the first transmission mechanism; The first transmission mechanism is connected to the second transmission mechanism via the rotating shaft, the second transmission mechanism is equipped with the moving seat, and the moving seat can move along the length direction of the rotating shaft; One end of the connecting mechanism is connected to the moving seat, the other end of the connecting mechanism is connected to the well frame, the well cover is hinged to the well frame, and the well cover is opened and closed by the movement of the moving seat; The output end of the manual driving device is connected to one end of the first transmission mechanism, and the manual driving device is used to manually drive the rotating shaft to rotate along its own axis through the first transmission mechanism; The manual drive device comprises a manual gear box, a hand wheel, a flexible shaft and a flexible shaft joint; The hand wheel is detachably mounted on the front side of the manual gear box; One end of the flexible shaft is connected to the side of the manual gear box, and the other end of the flexible shaft is connected to the first transmission mechanism; The manual gear box drives the flexible shaft joint to rotate through the flexible shaft; The manhole cover comprises a manhole cover top plate, a manhole cover body, a manhole cover bottom plate and an intermediate fixing plate; The top of the manhole cover body is installed with the manhole cover top plate, and the bottom of the manhole cover body is installed with the manhole cover bottom plate; The intermediate fixing plate is installed on the bottom surface of the manhole cover top plate, and the intermediate fixing plate is arranged inside the manhole cover body; The first transmission mechanism includes a first bevel gear, a second bevel gear, a third bevel gear, a transmission shaft, a fourth bevel gear and a bearing seat; The first bevel gear is fixed to the bottom surface of the manhole cover top plate, and the first bevel gear is connected to the output end of the electric drive device; The second bevel gear is fixed to the top surface of the manhole cover bottom plate, and the second bevel gear is connected to the flexible shaft joint; The third bevel gear is fixed to the bottom surface of the manhole cover top plate, and the third bevel gear, the first bevel gear and the second bevel gear are meshed with each other; One end of the transmission shaft is connected to the third bevel gear, the other end of the transmission shaft is connected to the fourth bevel gear, and the other end of the transmission shaft is installed with the bearing seat, and the bearing seat is fixed to the intermediate fixing plate; The rotating shaft is mounted on the intermediate fixed plate, the shaft body of the rotating shaft is sleeved with a fifth bevel gear, and the fifth bevel gear is meshed with the fourth bevel gear; The manhole cover further comprises a bottom fixing plate, and the bottom fixing plate is mounted on the bottom surface of the manhole cover top plate; The second transmission mechanism includes a main transmission gear, a secondary transmission gear and a screw rod; The main transmission gear and the auxiliary transmission gear are both mounted on the bottom fixed plate, the main transmission gear is meshed with the auxiliary transmission gear, the main transmission gear is sleeved on the rotating shaft, and the auxiliary transmission gear is sleeved on the screw rod; One end of the screw rod is mounted on the middle fixing plate, and the other end of the screw rod is mounted on the bottom fixing plate; The screw rod is provided with the movable seat, and the movable seat can move on the screw rod; The connecting mechanism comprises a connecting rod, a first hinge shaft, a second hinge shaft and a hinge seat; The hinge seat is fixed to the well frame, the second hinge shaft is installed on the hinge seat, and the first hinge shaft is installed on the moving seat; One end of the connecting rod is connected to the first hinge shaft, and the other end of the connecting rod is connected to the second hinge shaft.

2. According to claim 1, the electric protective sealed manhole cover for urban pipe gallery is characterized in that: It also includes a guide rod, one end of which is installed on the middle fixing plate, the other end of which is installed on the bottom fixing plate, and the guide rod passes through the moving seat.

3. The urban pipe gallery manual electric protective closed manhole cover according to claim 1 is characterized by: Also included is a support mechanism, the support mechanism comprising a fixed seat, a gas spring and a spring seat; The fixing seat passes through the bottom plate of the manhole cover and is fixed to the internal frame of the manhole cover body. The spring seat is fixed to the manhole frame. One end of the gas spring is hinged to the fixing seat, and the other end of the gas spring is hinged to the spring seat.

4. The urban pipe gallery manual electric protective closed manhole cover according to claim 3 is characterized by: A travel groove is provided at the hinged end of the gas spring and the spring seat.

5. The urban pipe gallery manual electric protective closed manhole cover according to claim 1 is characterized by: The outer periphery of the bottom plate of the manhole cover is provided with an embedded pressure strip; The well frame comprises a well frame top plate, a well frame body, a well frame bottom plate and a well frame fixing seat; The well frame top plate is installed on the top of the well frame body, and the well frame bottom plate is installed on the bottom of the well frame body; A main sealing strip is provided on the inner side of the well frame body, and the bottom of the main sealing strip is attached to the top surface of the well frame bottom plate; The well frame fixing seat passes through the well frame bottom plate, and the well frame fixing seat is installed on the well frame main body.

6. The electric protective sealed manhole cover for urban pipe gallery according to claim 5 is characterized in that: A secondary sealing strip is arranged on the inner side of the well frame top plate, and the bottom of the secondary sealing strip is attached to the top surface of the well frame body.

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