Cover plate opening and closing device

Abstract

The invention provides a cover plate opening and closing device. The cover plate opening and closing device comprises at least two fixing shafts and a cover plate, wherein the fixing shafts can be connected with a cable trench; the at least two jacking rods extend in the width direction of the cable trench, the middles of the at least two jacking rods are hinged to the at least two fixing shafts respectively, the first ends of the jacking rods are provided with cover plate matching parts, and the connecting rods are hinged to the second ends of the at least two jacking rods respectively. When the jacking assembly is in the storage state, the cover plate matching part can upwards extend out of the cable trench, and when the jacking assembly is in the storage state, the cover plate matching part can be downwards stored in the cable trench; the mounting shaft can be connected with the cable trench, the middle of the handle part is hinged to the mounting shaft, the first end of the handle part extends out of the cable trench, and the second end of the handle part is in driving connection with the connecting rod. Through the technical scheme provided by the invention, the problems that the cable trench cover plate is difficult to open and close and the safety is relatively low when the weight of the cable trench cover plate is relatively heavy in the prior art can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of cable trenches, and in particular to a cover plate switch device. Background Art

[0002] With the increasing development of domestic urbanization, circuits are generally laid in cable trenches during urban construction, and a cover plate is set on the top of the cable trench to protect the cable trench.

[0003] In the related art, a pry hole is provided on the cable trench cover plate, so that construction workers can use a pry bar in cooperation with the pry hole to pry the cable trench cover plate relative to the cable trench, so as to open and close the cable trench cover plate.

[0004] However, the method of using a pry bar and a pry hole to open and close the cable trench cover in the related art requires manual operation to lift the cable trench cover. When the cable trench cover is heavy, it is difficult to operate and has low safety, which can easily lead to personal injury or equipment damage caused by the cover falling. Summary of the invention

[0005] The present invention provides a cover switch device to solve the problem in the related art that when the cable trench cover is heavy, the cable trench cover is difficult to open and close and has low safety.

[0006] The present invention provides a cover plate switch device, which comprises: at least two fixed shafts, which can be arranged in a cable trench along the width direction of the cable trench, the fixed shafts extending along the length direction of the cable trench, and both ends of the fixed shafts can be connected to the cable trench; a lifting assembly, which comprises a connecting rod and at least two lifting rods, the at least two lifting rods extending along the width direction of the cable trench, the middle parts of the at least two lifting rods being hinged to the at least two fixed shafts in a one-to-one correspondence, the first end of the lifting rod being provided with a cover plate matching portion, the connecting rod extending along the width direction of the cable trench and being hinged to the second ends of the at least two lifting rods, and the lifting assembly having a lifting state and a lifting state. In the storage state, when the lifting assembly is in the lifting state, the cover plate matching part can extend upward from the cable trench, and when the lifting assembly is in the storage state, the cover plate matching part can be stored downward into the cable trench; a driving handle comprises a handle piece and a mounting shaft, the mounting shaft extends along the length direction of the cable trench, both ends of the mounting shaft can be connected to the cable trench, the handle piece extends along the width direction of the cable trench, the middle part of the handle piece can be hinged to the mounting shaft, the first end of the handle piece extends outside the cable trench, the second end of the handle piece extends into the cable trench, and the second end of the handle piece is drivingly connected to the connecting rod to drive the lifting assembly to switch between the lifting state and the storage state.

[0007] Furthermore, the cable trench includes a main trench and an accessory trench that are connected in the width direction thereof, and the cover switch device also includes a sealing cloth and a transmission rod. The sealing cloth is vertically arranged relative to the width direction of the cable trench to isolate the main trench and the accessory trench. The transmission rod is passed through the sealing cloth, and the second end of the handle piece extends into the accessory trench. One end of the transmission rod is hinged to the second end of the handle piece, and the other end of the transmission rod is hinged to the connecting rod.

[0008] Furthermore, the sealing cloth includes a pleated body and a sealing ring. The pleated body is vertically arranged relative to the width direction of the cable trench to isolate the main trench and the accessory trench. The pleated body has an avoidance hole for avoiding the transmission rod. The sealing ring is arranged around the outside of the avoidance hole and connected to the pleated body. The transmission rod is movably passed through the sealing ring.

[0009] Furthermore, the sealing cloth also includes a water absorption ring, which is arranged on one side of the sealing ring located at the accessory groove, and the transmission rod is movably inserted into the water absorption ring.

[0010] Furthermore, the handle member includes an operating section and a working section connected at an angle, the operating section is located outside the cable trench, the middle part of the working section is hinged to the installation shaft, and one end of the working section away from the operating section is connected to the connecting rod drive, and when the jacking assembly is in the storage state, the operating section is arranged horizontally.

[0011] Further, the distance between one end of the operating section facing away from the working section and the mounting axis is greater than the distance between one end of the working section facing away from the operating section and the mounting axis.

[0012] Furthermore, the lifting rod includes a bending rod, which includes a first rod segment and a second rod segment that are connected and arranged at an angle, the connection between the first rod segment and the second rod segment is hinged to the fixed axis, the cover plate matching portion is arranged at one end of the first rod segment facing away from the second rod segment, and the connecting rod is hinged to one end of the second rod segment facing away from the first rod segment.

[0013] Furthermore, the cover plate switch device comprises at least two lifting assemblies arranged along the length direction of the cable trench, and the handle is drivingly connected to the connecting rods of the at least two lifting assemblies.

[0014] Furthermore, the handle member includes a gripping rod and at least two driving rods, the at least two driving rods are arranged along the length direction of the cable trench, the middle parts of the at least two driving rods are hinged to the mounting shaft, the first ends of the at least two driving rods extend outside the cable trench, the second ends of the at least two driving rods extend into the cable trench, and the second ends of the at least two driving rods are one-to-one connected to the connecting rods of the at least two lifting assemblies.

[0015] Furthermore, the cover plate mating part includes a cover plate mounting block and a hinge shaft, the cover plate mounting block can be connected to the lower surface of the cable trench cover plate, the hinge shaft extends along the length direction of the cable trench and is arranged at the first end of the lifting rod, and the hinge shaft is hinged to the cover plate mounting block.

[0016] By applying the technical solution of the present invention, the cover plate switch device includes a lifting assembly, a driving handle and at least two fixed shafts. When the cable trench cover plate needs to be opened and closed, a torque is applied to the first end of the handle member outside the cable trench to rotate the handle member around the installation axis, and the second end of the handle member drives the connecting rod to move, so that the connecting rod applies a torque to the second end of the lifting rod, so that the lifting rod rotates around the fixed axis, so that the first end of the lifting rod drives the cable trench cover plate to move up and down through the cover plate matching part to realize the opening and closing of the cable trench cover plate. In this process, since the connecting rod can drive at least two lifting rods to rotate, at least two lifting rods are used to open and close the cable trench cover plate, thereby increasing the force points of the cable trench cover plate, so that only one person needs to operate the handle member to realize the opening and closing of the cable trench cover plate, and the operating efficiency and operating safety are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a cover switch device provided in an embodiment of the present invention is shown;

[0019] Figure 2 A top view of a cover switch device provided according to an embodiment of the present invention is shown;

[0020] Figure 3 A cross-sectional view of a sealing cloth of a cover plate switch device provided according to an embodiment of the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 1. Cable trench; 2. Cable trench cover; 3. Main trench; 4. Accessory trench;

[0023] 10. Fixed axis;

[0024] 20, lifting assembly; 21, connecting rod; 22, lifting rod; 221, cover plate matching part; 2211, cover plate mounting block; 2212, hinge shaft; 222, bending rod; 2221, first rod section; 2222, second rod section;

[0025] 30. driving handle; 31. handle member; 311. operating section; 312. working section; 313. holding rod; 314. driving rod; 32. mounting shaft;

[0026] 40. Sealing cloth; 41. Pleated body; 42. Sealing ring; 43. Water absorption ring; 50. Transmission rod;

[0027] X, length direction of the cable trench; Y, width direction of the cable trench. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] like Figures 1 to 3 As shown, an embodiment of the present invention provides a cover plate switch device, which includes a lifting assembly 20, a driving handle 30 and at least two fixed shafts 10. The at least two fixed shafts 10 can be arranged in the cable trench 1 along the width direction of the cable trench 1. The fixed shaft 10 extends along the length direction of the cable trench 1. Both ends of the fixed shaft 10 can be connected to the cable trench 1. The lifting assembly 20 includes a connecting rod 21 and at least two lifting rods 22. The at least two lifting rods 22 extend along the width direction of the cable trench 1. The middle parts of the at least two lifting rods 22 are hinged to the at least two fixed shafts 10 in a one-to-one correspondence. The first end of the lifting rod 22 is provided with a cover plate matching portion 221. The connecting rod 21 extends along the width direction of the cable trench 1 and is hinged to the second ends of the at least two lifting rods 22. The component 20 has a lifting state and a storage state. When the lifting component 20 is in the lifting state, the cover matching part 221 can extend upward from the cable trench 1. When the lifting component 20 is in the storage state, the cover matching part 221 can be stored downward into the cable trench 1. The driving handle 30 includes a handle component 31 and a mounting shaft 32. The mounting shaft 32 extends along the length direction of the cable trench 1. Both ends of the mounting shaft 32 can be connected to the cable trench 1. The handle component 31 extends along the width direction of the cable trench 1. The middle part of the handle component 31 can be hinged to the mounting shaft 32. The first end of the handle component 31 extends outside the cable trench 1, and the second end of the handle component 31 extends into the cable trench 1. The second end of the handle component 31 is drivingly connected to the connecting rod 21 to drive the lifting component 20 to switch between the lifting state and the storage state.

[0030] The cover plate switch device provided in this embodiment is applied, and the cover plate switch device includes a lifting assembly 20, a driving handle 30 and at least two fixed shafts 10. When it is necessary to open and close the cable trench cover, a torque is applied to the first end of the handle member 31 outside the cable trench 1 to make the handle member 31 rotate around the mounting shaft 32, and the second end of the handle member 31 drives the connecting rod 21 to move, so that the connecting rod 21 applies a torque to the second end of the lifting rod 22, so that the lifting rod 22 rotates around the fixed shaft 10, so that the first end of the lifting rod 22 drives the cable trench cover to move up and down through the cover plate matching portion 221 to realize the opening and closing of the cable trench cover. In this process, since the connecting rod 21 can drive at least two lifting rods 22 to rotate, the cable trench cover is opened and closed by utilizing at least two lifting rods 22, thereby increasing the force points of the cable trench cover, so that only one person needs to operate the handle member 31 to realize the opening and closing of the cable trench cover, and the operating efficiency and operating safety are improved.

[0031] Furthermore, by using the cover switch device provided in this embodiment, the lower surface of the cable trench cover is lifted by using the cover mating portion 221, and there is no need to open a pry hole on the cable trench cover, so it is suitable for use in rainy or waterlogged environments.

[0032] It should be noted that the length direction of the cable trench 1 refers to Figure 2 The X direction marked in the figure refers to the width direction of the cable trench 1. Figure 2 The Y direction is marked in .

[0033] like Figure 1 As shown, the cable trench 1 includes a main trench 3 and an accessory trench 4 that are connected in the width direction thereof, and the cover switch device also includes a sealing cloth 40 and a transmission rod 50. The sealing cloth 40 is vertically arranged relative to the width direction of the cable trench 1 to isolate the main trench 3 and the accessory trench 4. The transmission rod 50 is penetrated by the sealing cloth 40, and the second end of the handle member 31 extends into the accessory trench 4. One end of the transmission rod 50 is hinged to the second end of the handle member 31, and the other end of the transmission rod 50 is hinged to the connecting rod 21.

[0034] Specifically, when the handle piece 31 moves, the transmission rod 50 is movably arranged in the sealing cloth 40 along its axial direction, so that the handle piece 31 and the connecting rod 21 are indirectly transmitted through the transmission rod 50. At the same time, the sealing cloth 40 is used to isolate the main groove 3 and the accessory groove 4 to prevent water or small animals in the accessory groove 4 from entering the main groove 3 and causing damage. Specifically, the cable trench cover is arranged on the main groove 3.

[0035] like Figure 3 As shown, the sealing cloth 40 includes a pleated body 41 and a sealing ring 42. The pleated body 41 is vertically arranged relative to the width direction of the cable trench 1 to isolate the main trench 3 and the accessory trench 4. The pleated body 41 has an avoidance hole for avoiding the transmission rod 50. The sealing ring 42 is surrounded by the outside of the avoidance hole and connected to the pleated body 41. The transmission rod 50 is movably passed through the sealing ring 42.

[0036] Among them, since the transmission rod 50 is inserted into the pleated main body 41, when the handle 31 drives the transmission rod 50 to move, if the transmission rod 50 moves in the height direction of the cable trench, the pleated main body 41 can be deformed along with the movement of the transmission rod 50 in the height direction of the cable trench to maintain the protective performance of the sealing cloth 40.

[0037] Furthermore, by providing the sealing ring 42 , the sealing effect between the transmission rod 50 and the escape hole can be improved.

[0038] It should be noted that the main groove 3 is used for laying and storing cables, and the accessory groove 4 is mainly used for storing operating tools. Drain holes are provided on the bottom wall of the accessory groove 4 to drain the accumulated water in the accessory groove 4, and protective nets are provided at the drainage holes to prevent animals such as mice from entering the accessory groove 4, and to prevent solid waste such as fallen rocks or leaves in the accessory groove 4 from entering through the drainage holes and blocking the drainage channel.

[0039] like Figure 3 As shown, the sealing cloth 40 further includes a water absorption ring 43 , which is arranged on one side of the sealing ring 42 located at the accessory groove 4 , and the transmission rod 50 is movably arranged through the water absorption ring 43 .

[0040] Specifically, when the transmission rod 50 moves along its axial direction relative to the pleat main body 41, by setting the water absorption ring 43 on the side of the sealing ring 42 located at the accessory groove 4, and the transmission rod 50 is movably passed through the water absorption ring 43, the water absorption ring 43 can be used to absorb water droplets and moisture on the part of the transmission rod 50 located at the accessory groove 4, so as to prevent the transmission rod 50 from bringing this part of moisture into the main groove 3.

[0041] like Figure 1 As shown, the handle 31 includes an operating section 311 and a working section 312 connected at an angle, the operating section 311 is located outside the cable trench 1, the middle of the working section 312 is hinged to the mounting shaft 32, and one end of the working section 312 that is away from the operating section 311 is drivingly connected to the connecting rod 21. When the jacking assembly 20 is in the storage state, the operating section 311 is arranged horizontally. By connecting the operating section 311 and the working section 312 at an angle, the size of the handle 31 in the width direction of the cable trench is reduced under the premise that the length of the operating section 311 and the working section 312 remains unchanged, so that the cover switch device has a compact structure and helps to achieve structural miniaturization. And when the jacking assembly 20 is in the storage state, the operating section 311 is arranged horizontally, reducing the space occupied by the handle 31 above the cable trench cover, avoiding affecting the passage of pedestrians and vehicles in narrow streets or densely populated areas in the city.

[0042] In this embodiment, when the lifting assembly 20 is in the lifting state, the operating section 311 is arranged vertically.

[0043] like Figure 1 As shown, the distance between the end of the operating section 311 away from the working section 312 and the mounting shaft 32 is greater than the distance between the end of the working section 312 away from the operating section 311 and the mounting shaft 32 .

[0044] By adopting the above-mentioned arrangement, when operating the handle member 31, the handle member 31 forms a lever structure. According to the lever principle, a driving force is applied to the long arm end of the lever structure (i.e., the end of the operating section 311 away from the working section 312), which can make the short arm end of the lever structure (i.e., the end of the working section 312 away from the operating section 311) output a force greater than the driving force, thereby achieving a labor-saving effect.

[0045] like Figure 1 As shown, the lifting rod 22 includes a bending rod 222, and the bending rod 222 includes a first rod segment 2221 and a second rod segment 2222 that are connected and set at an angle. The connection between the first rod segment 2221 and the second rod segment 2222 is hinged to the fixed shaft 10, and the cover plate matching portion 221 is arranged at one end of the first rod segment 2221 away from the second rod segment 2222, and the connecting rod 21 is hinged to one end of the second rod segment 2222 away from the first rod segment 2221.

[0046] Among them, by connecting the first rod segment 2221 and the second rod segment 2222 at an angle, the size of the lifting rod 22 in the width direction of the cable trench is reduced while the lengths of the first rod segment 2221 and the second rod segment 2222 remain unchanged, so that the cover plate switch device has a compact structure and helps to achieve structural miniaturization.

[0047] In this embodiment, the length of the second rod segment 2222 is greater than that of the first rod segment 2221, so that the lifting rod 22 forms a lever structure. According to the lever principle, applying a driving force to the long arm end of the lever structure (i.e., the end of the second rod segment 2222 away from the first rod segment 2221) can enable the short arm end of the lever structure (i.e., the end of the first rod segment 2221 away from the second rod segment 2222) to output a force greater than the driving force, thereby achieving a labor-saving effect.

[0048] In this embodiment, the second rod segment 2222 adopts an arc-shaped structure, and the middle portion of the second rod segment 2222 protrudes in a direction away from the first rod segment 2221, so that the movement trajectory of the lifting rod 22 is smoother and the movement resistance is reduced.

[0049] like Figure 2 As shown, the cover plate switch device includes at least two lifting assemblies 20 arranged along the length direction of the cable trench 1, and the handle 31 is drivingly connected to the connecting rods 21 of the at least two lifting assemblies 20.

[0050] Among them, since the handle member 31 is driven and connected to the connecting rod 21 of at least two jacking assemblies 20, at least two jacking assemblies 20 are used to open and close the cable trench cover, and the force points of the cable trench cover are increased, so that only one person is required to operate the handle member 31 to realize the opening and closing of the cable trench cover, and the operating efficiency and operating safety are improved.

[0051] like Figure 2 As shown, the handle member 31 includes a gripping rod 313 and at least two driving rods 314, the at least two driving rods 314 are arranged along the length direction of the cable trench 1, the middle parts of the at least two driving rods 314 are hinged to the mounting shaft 32, the first ends of the at least two driving rods 314 extend outside the cable trench 1, the second ends of the at least two driving rods 314 extend into the cable trench 1, and the second ends of the at least two driving rods 314 are drivingly connected to the connecting rods 21 of the at least two lifting assemblies 20 one by one.

[0052] Specifically, by applying torque to the holding rod 313 by a single person, at least two lifting assemblies 20 can be driven by at least two driving rods 314 to open and close the cable trench cover at the same time, thereby increasing the force points of the cable trench cover. As a result, the cable trench cover can be opened and closed with only a single application of torque, thereby improving operational efficiency and safety.

[0053] like Figure 1 As shown, the cover plate matching part 221 includes a cover plate mounting block 2211 and a hinge shaft 2212. The cover plate mounting block 2211 can be connected to the lower surface of the cable trench cover plate 2. The hinge shaft 2212 extends along the length direction of the cable trench 1 and is arranged at the first end of the lifting rod 22. The hinge shaft 2212 is hinged to the cover plate mounting block 2211. The cover plate matching part 221 with the above structure is connected to the lower surface of the cable trench cover plate 2 by the cover plate mounting block 2211, which can further prevent the cable trench cover plate from falling and improve the operation safety.

[0054] The cover switch device provided in this embodiment has the following beneficial effects:

[0055] (1) The force bearing points of the cable trench cover are increased, so that only one person needs to operate the handle 31 to open and close the cable trench cover, thereby improving the operation efficiency and safety;

[0056] (2) The lifting rod 22 and the handle member 31 are based on the lever principle, which has the effect of saving effort.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cover switch device, characterized in that: The cover switch device comprises: At least two fixed shafts (10) can be arranged in the cable trench (1) in a row along the width direction of the cable trench (1), the fixed shafts (10) extend along the length direction of the cable trench (1), and both ends of the fixed shafts (10) can be connected to the cable trench (1); A lifting assembly (20) comprises a connecting rod (21) and at least two lifting rods (22), wherein the at least two lifting rods (22) extend along the width direction of the cable trench (1), the middle parts of the at least two lifting rods (22) are hingedly connected to the at least two fixed shafts (10) in a one-to-one correspondence, the first end of the lifting rod (22) is provided with a cover plate matching portion (221), the connecting rod (21) extends along the width direction of the cable trench (1) and is hingedly connected to the second ends of the at least two lifting rods (22), the lifting assembly (20) has a lifting state and a storage state, when the lifting assembly (20) is in the lifting state, the cover plate matching portion (221) can extend upward from the cable trench (1), when the lifting assembly (20) is in the storage state, the cover plate matching portion (221) can be stored downward into the cable trench (1); A driving handle (30) comprises a handle member (31) and a mounting shaft (32), wherein the mounting shaft (32) extends along the length direction of the cable trench (1), and both ends of the mounting shaft (32) can be connected to the cable trench (1), and the handle member (31) extends along the width direction of the cable trench (1), and the middle part of the handle member (31) can be hinged to the mounting shaft (32), and the first end of the handle member (31) extends outside the cable trench (1), and the second end of the handle member (31) extends into the cable trench (1), and the second end of the handle member (31) is drivingly connected to the connecting rod (21) to drive the lifting assembly (20) to switch between the lifting state and the storage state.

2. The cover switch device according to claim 1, characterized in that: The cable trench (1) comprises a main trench (3) and an accessory trench (4) which are connected in the width direction thereof. The cover switch device further comprises a sealing cloth (40) and a transmission rod (50). The sealing cloth (40) is arranged perpendicularly to the width direction of the cable trench (1) to isolate the main trench (3) and the accessory trench (4). The transmission rod (50) is passed through the sealing cloth (40). The second end of the handle member (31) extends into the accessory trench (4). One end of the transmission rod (50) is hinged to the second end of the handle member (31), and the other end of the transmission rod (50) is hinged to the connecting rod (21).

3. The cover switch device according to claim 2, characterized in that: The sealing cloth (40) comprises a pleated main body (41) and a sealing ring (42); the pleated main body (41) is arranged perpendicularly to the width direction of the cable trench (1) to isolate the main trench (3) and the accessory trench (4); the pleated main body (41) has an escape hole for evading the transmission rod (50); the sealing ring (42) is arranged around the outer side of the escape hole and connected to the pleated main body (41); the transmission rod (50) is movably inserted into the sealing ring (42).

4. The cover switch device according to claim 3, characterized in that: The sealing cloth (40) further comprises a water absorption ring (43), wherein the water absorption ring (43) is arranged on one side of the sealing ring (42) located at the attachment groove (4), and the transmission rod (50) is movably arranged to pass through the water absorption ring (43).

5. The cover switch device according to claim 1, characterized in that: The handle member (31) comprises an operating section (311) and a working section (312) connected at an angle, the operating section (311) being located outside the cable trench (1), the middle portion of the working section (312) being hinged to the mounting shaft (32), and one end of the working section (312) facing away from the operating section (311) being drivingly connected to the connecting rod (21), and when the lifting assembly (20) is in the storage state, the operating section (311) is arranged horizontally.

6. The cover switch device according to claim 5, characterized in that: The distance between one end of the operating section (311) facing away from the working section (312) and the installation shaft (32) is greater than the distance between one end of the working section (312) facing away from the operating section (311) and the installation shaft (32).

7. The cover switch device according to claim 1, characterized in that: The lifting rod (22) comprises a bending rod (222), and the bending rod (222) comprises a first rod segment (2221) and a second rod segment (2222) which are connected and arranged at an angle, the connection between the first rod segment (2221) and the second rod segment (2222) is hinged to the fixed shaft (10), the cover plate matching portion (221) is arranged at an end of the first rod segment (2221) that is away from the second rod segment (2222), and the connecting rod (21) is hinged to an end of the second rod segment (2222) that is away from the first rod segment (2221).

8. The cover switch device according to claim 1, characterized in that: The cover plate switch device comprises at least two lifting assemblies (20) arranged along the length direction of the cable trench (1), and the handle member (31) is drivingly connected to the connecting rods (21) of at least two of the lifting assemblies (20).

9. The cover switch device according to claim 8, characterized in that: The handle member (31) comprises a gripping rod (313) and at least two driving rods (314), wherein at least two of the driving rods (314) are arranged along the length direction of the cable trench (1), the middle parts of at least two of the driving rods (314) are hinged to the mounting shaft (32), the first ends of at least two of the driving rods (314) extend outside the cable trench (1), the second ends of at least two of the driving rods (314) extend into the cable trench (1), and the second ends of at least two of the driving rods (314) are drivingly connected to the connecting rods (21) of at least two of the lifting assemblies (20) in a one-to-one correspondence.

10. The cover switch device according to claim 1, characterized in that: The cover plate matching portion (221) comprises a cover plate mounting block (2211) and a hinge shaft (2212); the cover plate mounting block (2211) can be connected to the lower surface of the cable trench cover plate (2); the hinge shaft (2212) extends along the length direction of the cable trench (1) and is arranged at the first end of the lifting rod (22); the hinge shaft (2212) is hinged to the cover plate mounting block (2211).

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