Movable cover plate lifting device

Abstract

The utility model relates to the technical field of pipeline maintenance tools, in particular to a cover plate lifting device, a movable cover plate lifting device comprises a chain, a rotating rod, a rotating shaft, a grip and a connecting plate, the head and the tail of the chain extend into the connecting plate, the grip penetrates through the connecting plate and the chain, and the chain is rotatably fixed on the connecting plate. The rotating shaft penetrates through the off-center part of the rotating rod and the connecting plate so that the rotating rod can be rotatably arranged on the connecting plate, and the rotating rod and the grip are oppositely arranged in the extending direction of the connecting plate. According to the cover plate lifting device, the cover plate can be conveniently lifted, manpower use is reduced, and labor intensity is lowered.

Description

Technical Field

[0001] This utility model relates to the field of pipeline maintenance tools, specifically to a cover plate lifting device. Background Technology

[0002] The booster pump tank is an important component of a wastewater treatment plant, used to collect wastewater and lift it to subsequent treatment units via submersible booster pumps. To facilitate the inspection and replacement of the submersible booster pumps, an inspection opening is usually provided at the top of the booster pump tank, which is then sealed with a movable cover to prevent personnel from falling and to prevent odor leakage. Because wastewater and its volatile gases are corrosive, the submersible booster pumps require regular inspection and maintenance during normal operation. This necessitates frequent opening of the movable cover. However, due to the overall weight of the fiberglass cover, its narrow perimeter and center, the inability to install lifting equipment at the top, and the very small gap between the cover and the opening at the top of the booster pump tank, removing and repositioning the movable cover presents significant challenges, requiring a large number of personnel, resulting in inconvenient maintenance, high labor costs, and significant safety risks. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a movable cover lifting device, which facilitates the lifting of the cover, reduces manual labor, and lowers labor intensity.

[0005] The movable cover plate lifting device according to an embodiment of the present utility model includes:

[0006] A chain, a handle, and a connecting plate, wherein the chain extends into the connecting plate at both ends, and the handle passes through the connecting plate and the chain, and the chain is rotatably fixed to the connecting plate;

[0007] A rotating rod and a pivot, the pivot passing through an off-center portion of the rotating rod and the connecting plate to rotatably mount the rotating rod on the connecting plate, and the rotating rod and the grip being arranged opposite each other in the extending direction of the connecting plate.

[0008] The cover plate lifting device of this utility model facilitates the lifting of the cover plate, reduces the use of manpower, and lowers labor intensity.

[0009] In some embodiments, there are multiple connecting plates, and the rotating rod is arranged between the multiple connecting plates. The multiple connecting plates form a rotation space, and the rotating rod extends into the rotation space.

[0010] In some embodiments, the rotating rod includes a first segment and a second segment, the first segment being disposed within the rotation space, and the second segment at least partially extending out of the rotation space.

[0011] The dimension of the first segment in the extension direction of the connecting plate is greater than or less than the dimension of the second segment in the extension direction of the connecting plate.

[0012] In some embodiments, the movable cover lifting device further includes a limiting rod disposed on the connecting plate and passing through the connecting plate.

[0013] In some embodiments, the grip includes a connecting rod and a locking nut, the connecting rod passing through the connecting plate, and the locking nut being fitted onto both ends of the connecting rod.

[0014] In some embodiments, the movable cover lifting device further includes a coil spring disposed on the rotating shaft and connected to the rotating rod to cause the rotating rod to rotate.

[0015] The rotating rod has a first state and a second state. In the first state, the rotating rod extends along the extension direction of the connecting plate. In the second state, the extension direction of the rotating rod is orthogonal to the extension direction of the connecting plate.

[0016] In some embodiments, the movable cover lifting device further includes a magnetic component, wherein the end of the second segment away from the first segment is provided with a mounting groove for mounting the magnetic component.

[0017] In some embodiments, the first segment and the second segment are integrally formed.

[0018] In some embodiments, the movable cover lifting device further includes a connecting rope, one end of which is connected to the first segment and the other end of which is wrapped around the handle.

[0019] In some embodiments, the movable cover lifting device further includes a protective sleeve fitted onto the chain. Attached Figure Description

[0020] Figure 1 This is a side view of the movable cover lifting device according to an embodiment of this utility model.

[0021] Figure 2 This is a front view of the movable cover lifting device according to an embodiment of this utility model.

[0022] Figure 3 This is a schematic diagram of the movable cover lifting device according to an embodiment of this utility model.

[0023] Figure 4This is a schematic diagram of the connecting plate and rotating rod in an embodiment of this utility model.

[0024] Figure label:

[0025] Chain 1, rotating rod 2, first section 21, second section 22, handle 3, connecting rod 31, locking nut 32, rotating shaft 4, connecting plate 5, rotating space 51, limiting rod 6, magnetic component 7, movable cover plate 8. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The movable cover plate 8 lifting device according to an embodiment of the present invention includes a chain 1, a rotating rod 2, a rotating shaft 4, a handle 3, and a connecting plate 5. The chain 1 extends into the connecting plate 5 at both ends, and the handle 3 passes through the connecting plate 5 and the chain 1. The chain 1 is rotatably fixed to the connecting plate 5.

[0028] The rotating shaft 4 passes through the off-center portion of the rotating rod 2 and the connecting plate 5 to rotatably mount the rotating rod 2 on the connecting plate 5, and the rotating rod 2 and the grip 3 are arranged opposite to each other in the extending direction of the connecting plate 5.

[0029] Specifically, such as Figures 1 to 4 As shown, the connecting plate 5 extends in the vertical direction, and the upper end of the connecting plate 5 is provided with a handle 3. The handle 3 passes through the chain 1 and the connecting plate 5 in the front-back direction. There can be multiple connecting plates 5. The chain 1 extends between multiple connecting plates 5, and then the handle 3 passes through the connecting plate 5 and the chain 1 in the front-back direction to fix the chain 1 to the upper end of the connecting plate 5.

[0030] Meanwhile, a rotating rod 2 is rotatably mounted on the lower end of the connecting plate 5. The rotating shaft 4 passes through the connecting plate 5 and the rotating rod 2 in the front-to-back direction. The rotating rod 2 can rotate in the up-and-down direction relative to the connecting plate 5. Therefore, when the operator moves the connecting plate 5 up and down, the connecting plate 5 moves down to pass through the through hole of the movable cover plate 8 and extend under the cover plate. At this time, by swinging the connecting plate 5, the centrifugal force can be used to tilt the rotating rod 2, and then the vertical pull rod can be quickly lifted so that the crossbar spans under the movable cover plate 8 and is tightened. At this time, the operator can hold the handle 3 and the chain 1 with both hands respectively to lift the cover plate.

[0031] The cover plate lifting device of this utility model, by setting a rotating shaft 4 and a rotating rod 2, facilitates the insertion of the rotating rod 2 under the cover plate, and then swings it left and right to rotate the rotating rod 2, thereby facilitating the lifting of the cover plate, reducing manual labor and labor intensity. In actual use, the operation is very simple. The operator only needs to insert the lifting device vertically into the hole of the movable cover plate 8, swing it left and right, and then quickly pull it up to lift it. In daily maintenance work, at least three or four operators are required, but with this lifting device, only two operators are needed to complete the removal and repositioning of the movable cover plate 8, effectively reducing the need for operators; and using this lifting device can significantly shorten the removal and repositioning of the movable cover plate 8, reducing maintenance time by at least 30 minutes depending on actual use.

[0032] In some embodiments, there are multiple connecting plates 5, and the rotating rod 2 is arranged between the multiple connecting plates 5. The multiple connecting plates 5 enclose a rotation space 51, and the rotating rod 2 partially extends into the rotation space 51. Specifically, as shown... Figures 1 to 4 As shown, the connecting plates 5 are arranged at intervals in the front-to-back direction, and there can be two connecting plates 5. A rotation space 51 exists between the two connecting plates 5. The upper end of the rotating rod 2 extends into the rotation space 51, and the rotating shaft 4 passes through the connecting plates 5 and the rotating rod 2 in the front-to-back direction to rotatably mount the rotating rod 2 at the lower end of the connecting plate 5. When not in use, the rotating rod 2 extends in the vertical direction, with its upper part within the rotation space 51, thus facilitating the retraction of the rotating rod 2 into the rotation space 51 when not in use. The multiple connecting plates 5 also increase the structural strength of the lifting device.

[0033] In some embodiments, the rotating rod 2 includes a first segment 21 and a second segment 22. The first segment 21 is arranged within the rotating space 51, and the second segment 22 extends at least partially out of the rotating space 51. The dimension of the first segment 21 in the extending direction of the connecting plate 5 is greater than or less than the dimension of the second segment 22 in the extending direction of the connecting plate 5.

[0034] The first segment 21 and the second segment 22 are connected, and the rotating shaft 4 passes through the connection point of the first segment 21 and the second segment 22. The vertical dimension of the first segment 21 is larger than that of the second segment 22, so that the center of gravity of the rotating rod 2 is concentrated on the first segment 21. This allows the first segment 21 to rotate downwards due to gravity when swaying left and right. Alternatively, the dimension of the first segment 21 may be smaller than that of the second segment 22, so that the rotating rod 2 is concentrated on the second segment 22. The rotating rod 2 on the second segment 22 allows the second segment 22 to rotate vertically due to gravity when swaying left and right, which in turn drives the first segment 21 to rotate so that the extension direction of the rotating rod 2 is orthogonal to the rotation direction of the connecting plate 5. Operators can replace different types of rotating rods 2 according to actual needs.

[0035] In some embodiments, the lifting device for the movable cover plate 8 further includes a limiting rod 6, which is disposed on the connecting plate 5 and passes through the connecting plate 5. The limiting rod 6 extends in the front-rear direction, and when the rotating rod 2 contacts the upper movable cover plate 8, the limiting rod 6 is installed to prevent the entire lifting device from being adjusted into the lower device through the through hole of the movable cover plate 8.

[0036] In some embodiments, the grip 3 includes a connecting rod 31 and a locking nut 32. The connecting rod 31 passes through the connecting plate 5, and the locking nut 32 is sleeved on both ends of the connecting rod 31.

[0037] Specifically, such as Figures 1 to 4 As shown, the connecting rod 31 extends in the front-to-back direction, and the locking nut 32 is provided on the left and right sides of the connecting rod 31 and contacts the connecting plate 5 to fix the connecting plate 5 and the connecting rod 31.

[0038] In some embodiments, the lifting device for the movable cover plate 8 further includes a coil spring, which is disposed on the rotating shaft 4 and connected to the rotating rod 2 to cause the rotating rod 2 to rotate.

[0039] The rotating rod 2 has a first state and a second state. In the first state, the rotating rod 2 extends along the extension direction of the connecting plate 5. In the second state, the extension direction of the rotating rod 2 is orthogonal to the extension direction of the connecting plate 5.

[0040] Specifically, such as Figures 1 to 4 As shown, the coil spring applies an initial force to the rotating rod 2 to keep it orthogonal to the connecting plate 5, facilitating the lifting of the cover plate. For example, the coil spring causes the rotating rod 2 to move vertically, so that after the operator inserts the connecting plate 5 and the rotating rod 2 under the movable cover plate 8, the rotating rod 2 rotates to make it orthogonal to the connecting plate 5, that is, the rotating rod 2 is orthogonal to the extension direction of the connecting plate 5. Then, the rotating rod 2 and the connecting plate 5 are moved upward so that the rotating rod 2 contacts the movable cover plate 8.

[0041] In some embodiments, the lifting device for the movable cover plate 8 further includes a magnetic component 7, and the end of the second segment 22 away from the first segment 21 is provided with a mounting groove for mounting the magnetic component 7. Furthermore, when the movable cover plate 8 is made of a ferromagnetic metal, it facilitates rotating the lower end of the connecting rod 31 to contact the movable cover plate 8, thereby increasing the probability of contact between the rotating rod 2 and the movable cover plate 8 after rotation. This improves the ease of use of the rotating rod 2.

[0042] Furthermore, the first segment 21 and the second segment 22 are integrally formed to improve the structural strength of the connecting plate 5. Furthermore, the lifting device for the movable cover 8 also includes a connecting rope, one end of which is connected to the first segment 21, and the other end of which is wound around the handle 3. The upper end of the connecting rope is wound around the handle 3, and the lower end of the connecting rope is connected to the first segment 21 so that after the first segment 21 rotates, pulling the connecting rope will rotate the first segment 21 back to the rotation space 51, allowing the lifting device to be retracted after inspecting the cover. Furthermore, the lifting device for the movable cover 8 also includes a protective sleeve, which is fitted onto the chain 1 for easy gripping by personnel.

[0043] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "on top" can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A movable cover lifting device, characterized in that, The chain, the handle and the connecting plate, the chain extends into the connecting plate, and the handle passes through the connecting plate and the chain and is rotatably fixed on the connecting plate; The rotating rod and the rotating shaft, the rotating shaft passes through the eccentric part of the rotating rod and the connecting plate to rotatably set the rotating rod on the connecting plate, and the rotating rod and the handle are oppositely arranged in the extension direction of the connecting plate. The number of the connecting plates is multiple, the rotating rods are arranged between the multiple connecting plates, the multiple connecting plates enclose a rotating space, and the rotating rods partially extend into the rotating space.

2. A liftgate assembly as in claim 1, wherein, The rotating rod includes a first segment and a second segment, the first segment is arranged in the rotating space, and the second segment at least partially extends out of the rotating space.

3. A liftgate assembly as in claim 2, wherein, The size of the first segment in the extension direction of the connecting plate is greater than or smaller than the size of the second segment in the extension direction of the connecting plate. The limiting rod is further arranged on the connecting plate, and the limiting rod passes through the connecting plate.

4. The liftgate assembly of claim 2, wherein, The handle includes a connecting rod and a locking nut, the connecting rod passes through the connecting plate, and the locking nut is sleeved on both ends of the connecting rod.

5. The liftgate assembly of claim 2, wherein, The coil spring is further arranged on the rotating shaft, and the coil spring is connected with the rotating rod to rotate the rotating rod.

6. The liftgate assembly of claim 2, wherein, The rotating rod has a first state and a second state, in the first state, the rotating rod extends along the extension direction of the connecting plate, and in the second state, the extension direction of the rotating rod is perpendicular to the extension direction of the connecting plate. The magnetic component is further arranged on the second segment away from one end of the first segment.

7. The liftgate assembly of claim 3, wherein, The first segment and the second segment are integrally formed.

8. The liftgate assembly of claim 3, wherein, The connecting rope is further arranged, one end of the connecting rope is connected with the first segment, and the other end of the connecting rope is wound on the handle.

9. The liftgate assembly of claim 3, wherein, The protective sleeve is further arranged on the chain.

10. A liftgate assembly as in any of claims 1-9, wherein, ​

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