Well lid opening device for cable working well

Abstract

The utility model discloses a well lid opening device used for a cable working well, which comprises a well lid opening tool, the well lid opening tool is composed of a lifting frame and a jack, and the lifting frame is provided with a vertical part and a horizontal part welded at the top end of the vertical part; wherein the vertical part is placed on the well lid, one end of the horizontal part extends to the outside of the well lid, a limiting piece penetrates through the horizontal part and abuts against the well lid to achieve connection of the lifting frame and the well lid, and the output end of the jack abuts against the bottom of one end of the horizontal part of the lifting frame. The designed well lid moving tool can be matched with an existing well lid opening tool, on the premise that normal lifting work of the well lid is not affected, the well lid can be rapidly reset, operation is quite convenient and fast, the operation steps are greatly simplified, and the working efficiency is improved; and meanwhile, the well lid moving tool can be adjusted according to the diameter of the well lid, the operation flexibility is high, and the defects of an existing structure in use are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of manhole cover construction, and in particular relates to a manhole cover opening device used for a cable manhole. Background Art

[0002] Live detection in the joint well of urban high-voltage cable lines is an important task to ensure the stable operation of high-voltage cables. At present, live detection tasks in joint wells are mostly completed manually by operation and maintenance personnel. Operators open the manhole cover by pulling the manhole cover with an iron hook. Due to the heavy manhole cover of the joint well and the long-term crushing of the manhole cover on the road by vehicles, the manhole cover fits tightly with the well wall. The lifting angle of the manhole cover is small each time, and at least two people are required to open the manhole cover continuously to lift the manhole cover. When closing the manhole cover, the manhole cover needs to be repeatedly moved to align with the manhole cover plug-in jack, making the live detection of the cable joint well time-consuming and laborious. Measures need to be taken to reduce the time of opening and closing the manhole cover. Therefore, a special opening device is used to open the manhole cover, such as a manhole cover opening tool in announcement number CN202321254536, and a hydraulic cable manhole cover simple opening device disclosed in CN201621121113.

[0003] Although the current manhole cover opening device can conveniently open the manhole cover, it is not possible to easily put the manhole cover back into place after opening, nor can it support the manhole cover. In actual use, multiple manual adjustments are still required, which is inconvenient to operate. Therefore, there are great limitations in actual use and there is room for improvement. Utility Model Content

[0004] The purpose of the utility model is to provide a manhole cover opening device for a cable manhole, so as to solve the problem that the existing manhole cover mentioned in the above background technology cannot be easily returned to its original position after opening, resulting in inconvenient operation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manhole cover opening device for a cable manhole, comprising a manhole cover opening tool, which is composed of a lifting frame and a jack, wherein the lifting frame has a vertical part and a horizontal part welded to the top of the vertical part; wherein the vertical part is placed on the manhole cover, and one end of the horizontal part extends to the outside of the manhole cover, and a limiting member is passed through the horizontal part, and the limiting member is abutted against the manhole cover to realize the connection between the lifting frame and the manhole cover, and the output end of the jack is abutted against the bottom of one end of the horizontal part of the lifting frame, and the lifting of the lifting frame as a whole is realized by the extension and contraction of the jack. When the lifting frame is lifted, it will drive the manhole cover to open; it also includes a manhole cover moving tool, which is composed of a support member and a connecting member, and the connecting member is fixed on the top of the support member, wherein the support member is placed on the ground and is outside the manhole cover, and the connecting member is connected to the horizontal part of the lifting frame. After the manhole cover is opened, the manhole cover can be hoisted by the connecting member, and the purpose of convenient operation is achieved in the later resetting of the manhole cover.

[0006] Preferably, the support member includes at least three support frames, an end plate is arranged on the top of the support frame, a connecting frame plate is welded on the bottom end surface of the end plate, and the connecting frame plate is rotatably connected to the support frame through a locking member, so as to realize the expansion and closing of the support frame and adjust the opening angle according to the diameter of the manhole cover.

[0007] Preferably, the connecting frame plate is half-wrapped around the outside of the support frame, thereby limiting the rotation angle of the support frame.

[0008] Preferably, the connecting piece includes a steel chain with the top end welded to the end plate, and a hook is connected to the bottom end of the steel chain; a ring is welded to the top of one end of the horizontal part of the lifting frame, and the hook passes through the ring, thereby realizing the hanging of the entire lifting frame.

[0009] Preferably, the connecting member comprises an end plate welded to the end plate, and the end plate is penetrated by bolts that abut against the horizontal part of the lifting frame.

[0010] Preferably, it also includes an adjusting screw, a limiting plate is fixed to the bottom end of the adjusting screw, a strip groove for inserting the limiting plate is opened on the manhole cover, a nut is also screwed into the adjusting screw, and the nut is abutted against the top surface of the horizontal part of the lifting frame. When the lifting frame is lifted, the adjusting screw will be lifted under the limitation of the nut, and the adjusting screw will then lift the manhole cover through the limiting plate.

[0011] Preferably, the length and width of the limit plate are smaller than the width of the strip groove to facilitate insertion, and the limit plate is rotated to abut against the bottom end surface of the manhole cover. During installation, the limit plate is first inserted, and then the adjusting screw is rotated to drive the limit plate to rotate, thereby achieving misalignment between the limit plate and the manhole cover.

[0012] Preferably, the locking member includes a locking bolt that passes through the connecting frame plate and the support frame, a nut is screwed into one end of the locking bolt, and a locking ring is sleeved on the other end, a resist column is fixed to the end face of the locking ring, and the resist column passes through the connecting frame plate to the inner wall of the support frame. During use, the nut is tightened, and the other end of the locking ring will press against the locking ring, and the locking ring will move the resist column toward the direction of the support frame until the resist column presses the support frame, thereby limiting the rotation of the support frame; a spring is also sleeved on the resist column, and both ends of the spring respectively press against the end faces of the locking ring and the locking bolt.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The designed manhole cover moving tool can cooperate with the existing manhole cover opening tool to quickly return the manhole cover to its original position. It is very convenient to operate, greatly simplifies the operating steps, and improves work efficiency. At the same time, the manhole cover moving tool can adjust itself according to the diameter of the manhole cover. It is highly flexible in operation and improves the shortcomings of the existing structure in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a top view of the connection between the support frame and the connection frame plate of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the locking member of the utility model;

[0018] Figure 4 This is a cross-sectional view of the connection between the support frame and the connection frame plate of the utility model;

[0019] Figure 5 It is a side view of the connection between the locking ring and the abutment column of the utility model.

[0020] In the figure:

[0021] 100, lifting frame; 101, adjusting screw; 101a, limiting plate; 102, jack; 103, collar;

[0022] 200, support frame; 201, connecting frame plate; 202, steel chain; 203, hook; 204, locking bolt; 205, locking ring; 206, support column; 207, spring; 208, end plate;

[0023] 300. Manhole cover. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0025] See also Figures 2 to 5 The utility model provides a technical solution: a manhole cover opening device for a cable well, comprising:

[0026] A manhole cover opening tool, comprising a lifting frame 100 and a jack 102, wherein the lifting frame 100 has a vertical portion and a horizontal portion welded to the top of the vertical portion;

[0027] The vertical part is placed on the manhole cover 300, and one end of the horizontal part extends to the outside of the manhole cover 300. A limit piece is passed through the horizontal part, and the limit piece abuts against the manhole cover 300 to realize the connection between the lifting frame 100 and the manhole cover 300. The output end of the jack 102 abuts against the bottom of one end of the horizontal part of the lifting frame 100. The lifting of the lifting frame 100 as a whole is realized by the extension and contraction of the jack 102. When the lifting frame 100 is lifted, the manhole cover 300 will be driven to open.

[0028] Also includes

[0029] The manhole cover moving tool is composed of a support and a connecting piece, wherein the connecting piece is fixed on the top of the support.

[0030] The support member is placed on the ground and is outside the manhole cover 300, and the connecting member is connected to the horizontal part of the lifting frame 100. After the manhole cover 300 is opened, the manhole cover 300 can be suspended by the connecting member, so as to achieve the purpose of convenient operation when resetting the manhole cover 300 later.

[0031] In this embodiment, preferably, the support member includes at least three support frames 200, and an end plate is arranged on the top of the support frame 200. A connecting frame plate 201 is welded on the bottom end surface of the end plate. The connecting frame plate 201 is rotatably connected to the support frame 200 through a locking member, so as to realize the expansion and closing of the support frame 200 and adjust its own opening angle according to the diameter of the manhole cover 300.

[0032] In this embodiment, preferably, the connecting frame plate 201 is half-wrapped around the outside of the support frame 200 , so as to limit the rotation angle of the support frame 200 .

[0033] In this embodiment, preferably, the connecting part includes a steel chain 202 with the top end welded to the end plate, and a hook 203 is connected to the bottom end of the steel chain 202; a ring 103 is welded to the top of one end of the horizontal part of the lifting frame 100, and the hook 203 passes through the ring 103, so as to realize the hanging of the entire lifting frame 100, which is mainly used for operating the manhole cover 300 with a small diameter.

[0034] In this embodiment, preferably, it also includes an adjusting screw 101, and a limiting plate 101a is fixed to the bottom end of the adjusting screw 101. A strip groove for inserting the limiting plate 101a is opened on the manhole cover 300, and a nut is screwed into the adjusting screw 101, and the nut is abutted against the top surface of the horizontal part of the lifting frame 100. When the lifting frame 100 is lifted, the adjusting screw 101 will be lifted under the limitation of the nut, and the adjusting screw 101 will then lift the manhole cover 300 through the limiting plate 101a.

[0035] In this embodiment, preferably, the length and width of the limit plate 101a are smaller than the width of the strip groove, so as to facilitate insertion, and the limit plate 101a is rotated to abut against the bottom end surface of the manhole cover 300. During installation, the limit plate 101a is first inserted, and then the adjusting screw 101 is rotated, thereby driving the limit plate 101a to rotate, so as to achieve the misalignment and abutment between the limit plate 101a and the manhole cover 300.

[0036] In this embodiment, preferably, the locking member includes a locking bolt 204 that passes through the connecting frame plate 201 and the support frame 200, one end of the locking bolt 204 is screwed with a nut, and the other end is sleeved with a locking ring 205, the end face of the locking ring 205 is fixed with a resist column 206, and the resist column 206 passes through the connecting frame plate 201 to the inner wall of the support frame 200. In use, the nut is tightened, and at this time the other end of the locking ring 205 will press against the locking ring 205, and the locking ring 205 will move the resist column 206 toward the direction of the support frame 200 until the resist column 206 presses against the support frame 200, thereby limiting the rotation of the support frame 200; a spring 207 is also sleeved on the resist column 206, and the two ends of the spring 207 are respectively pressed against the end faces of the locking ring 205 and the locking bolt 204. After the nut is loosened, the spring 207 will rebound, thereby realizing the rapid separation of the resist column 206 and the support frame 200. Example 2

[0037] The difference from the embodiment 1 is: Figure 1 The connecting member includes an end plate 208 welded on the end plate, and the end plate 208 is penetrated by bolts that abut against the horizontal part of the lifting frame 100.

[0038] Although the embodiments of the present invention have been shown and described (see the detailed description above for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manhole cover opening device for a cable well, comprising: A manhole cover opening tool, comprising a lifting frame (100) and a jack (102), wherein the lifting frame (100) has a vertical portion and a horizontal portion welded to the top of the vertical portion; The vertical portion is placed on the manhole cover (300), and one end of the horizontal portion extends to the outside of the manhole cover (300). A limiting member runs through the horizontal portion, and the limiting member abuts against the manhole cover (300). The output end of the jack (102) abuts against the bottom of one end of the horizontal portion of the lifting frame (100); Features: Also includes The manhole cover moving tool is composed of a support member and a connecting member, wherein the connecting member is fixed on the top of the support member. The support member is placed on the ground and is located outside the manhole cover (300), while the connecting member is connected to the horizontal part of the lifting frame (100).

2. A manhole cover opening device for a cable well according to claim 1, characterized in that: The support member comprises at least three support frames (200), an end plate is arranged on the top of the support frame (200), a connecting frame plate (201) is welded on the bottom end surface of the end plate, and the connecting frame plate (201) is rotatably connected to the support frame (200) via a locking member.

3. A manhole cover opening device for a cable well according to claim 2, characterized in that: The connection frame plate (201) is half-wrapped outside the support frame (200).

4. A manhole cover opening device for a cable well according to claim 2, characterized in that: The connecting member comprises a steel chain (202) whose top end is welded to the end plate, and a hook (203) is connected to the bottom end of the steel chain (202); a ring (103) is welded to the top of one end of the horizontal part of the lifting frame (100), and the hook (203) passes through the ring (103).

5. A manhole cover opening device for a cable well according to claim 2, characterized in that: The connecting member comprises an end plate (208) welded to the end plate, and bolts that abut against the horizontal part of the lifting frame (100) penetrate through the end plate (208).

6. A manhole cover opening device for a cable well according to claim 1, characterized in that: It also includes an adjusting screw (101), a limiting plate (101a) being fixed at the bottom end of the adjusting screw (101), a strip groove for inserting the limiting plate (101a) being provided on the manhole cover (300), and a nut being screwed into the adjusting screw (101), the nut being in contact with the top end surface of the horizontal portion of the lifting frame (100).

7. A manhole cover opening device for a cable well according to claim 6, characterized in that: The length and width of the limiting plate (101a) are both smaller than the width of the strip-shaped groove, and the limiting plate (101a) abuts against the bottom end surface of the manhole cover (300) through rotation.

8. A manhole cover opening device for a cable well according to claim 2, characterized in that: The locking member comprises a locking bolt (204) that passes through the connecting frame plate (201) and the support frame (200); a nut is screwed into one end of the locking bolt (204), and a locking ring (205) is sleeved on the other end; a support column (206) is fixed to the end surface of the locking ring (205); the support column (206) passes through the connecting frame plate (201) to the inner wall of the support frame (200); a spring (207) is sleeved on the support column (206), and two ends of the spring (207) respectively abut against the end surfaces of the locking ring (205) and the locking bolt (204).

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