Portable well lid opening device

Abstract

The utility model belongs to the technical field of municipal construction, and particularly provides a portable well lid opening device which comprises two sets of supporting frames, each supporting frame comprises a base, one end of each base is hinged to a supporting seat, a positioning hole is formed in the upper side of the other end of each base, a supporting rod containing groove is formed in the bottom of each supporting seat, and a supporting rod is rotationally installed in each supporting rod containing groove through a rotating shaft. The supporting rod is inserted into the positioning hole to support the supporting base after rotating to the vertical state, a supporting groove for supporting the supporting cross rod is formed in the end of the supporting base, a power assisting rod is arranged on the supporting cross rod, and a well lid connecting assembly is arranged at the end of the power assisting rod. The device facilitates opening operation of well lids of different sizes, improves the working efficiency and is convenient to carry.

Description

Technical Field

[0001] This utility model relates to the field of municipal construction technology, and in particular to a portable manhole cover opening device. Background Technology

[0002] To ensure the sturdiness and durability of manhole covers, some are made of concrete, making them extremely heavy and difficult to open. To maintain the normal operation of the pipeline network, it is necessary to periodically open the manhole covers for maintenance. The common method for opening manhole covers is to insert a T-shaped pick or pry bar into the opening hole, forcefully separate the cover from the base, and then drag the cover away. However, the gap between the cover and the base is often filled with mud, making separation difficult. This process consumes a significant amount of physical strength for workers. Furthermore, this method can cause damage to both the cover and the base. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a portable manhole cover opening device, which facilitates the opening of manhole covers of different sizes, improves work efficiency, and is easy to carry.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a portable manhole cover opening device, including two sets of support frames. The support frame includes a base, one end of which is hinged to a support seat. The other end of the base has a positioning hole on its upper side. The bottom of the support seat has a support rod storage groove. The support rod is rotatably installed in the support rod storage groove through a rotating shaft. After the support rod is rotated to a vertical state, it is inserted into the positioning hole to support the support seat. The end of the support seat has a support groove for supporting the support crossbar. The support crossbar has an assist rod, and the end of the assist rod has a manhole cover connecting component.

[0005] In a preferred embodiment, the manhole cover connecting assembly includes two sets of chains, with hooks at the lower ends of the chains.

[0006] In a preferred embodiment, the hook has an inverted "T" shaped structure.

[0007] In a preferred embodiment, one of the two sets of support grooves is a through groove, and the other set is a support crossbar storage groove set inside the support base. The support crossbar is rotatably installed at the end of the support crossbar storage groove via a pivot. After the support crossbar is rotated to a horizontal state, it is inserted into the through groove.

[0008] In a preferred embodiment, the base end is provided with a storage hole for storing the assist rod.

[0009] In a preferred embodiment, the end of the base away from the hinged end with the support seat is provided with an end plate, and after the support seat is rotated to a horizontal state, the upper side is flush with the upper side of the end plate.

[0010] In a preferred embodiment, a limiting plate is provided on the upper side of the end plate. One end of the limiting plate is installed on the top of the end plate via a rotating shaft, and the other end rotates to the upper side of the support seat to achieve limiting and locking of the support seat.

[0011] In a preferred embodiment, an "X"-shaped connecting frame is provided between the two sets of bases. The "X"-shaped connecting frame includes two sets of connecting rods that are hinged together. A slide rail groove is provided on the inner side of the base. One end of the connecting rod is hinged in the slide rail groove, and the other end is hinged to the slider. The slider moves along the slide rail groove.

[0012] In a preferred embodiment, when the two sets of bases are brought close together, the "X"-shaped connecting frame is folded and stored in the slide rail groove.

[0013] In a preferred embodiment, the upper side of the support crossbar is provided with a groove for placing the assist rod.

[0014] The portable manhole cover opening device provided by this utility model has the following beneficial effects:

[0015] 1. Simple structure, utilizing the lever principle, allows for easier opening of manhole covers, improving work efficiency. It facilitates opening manhole covers of different sizes, enhancing work efficiency, and is easy to carry.

[0016] 2. By using the lever principle, first lift the manhole cover vertically, and then move it horizontally to the designated area, which can reduce damage to the manhole ring.

[0017] 3. Foldable storage structure, easy to carry after folding.

[0018] 4. Applicable to a variety of different types of manhole covers, with a wide range of applications. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0022] Figure 3 This is a structural diagram of the device of this utility model in its stored state;

[0023] In the diagram: support frame 100, base 110, positioning hole 111, end plate 112, limiting plate 113, storage hole 114, slide rail groove 115, support seat 120, support rod storage groove 121, through groove 122, support crossbar storage groove 123, support rod 130; assist rod 200; manhole cover connecting assembly 300, chain 310, hook 320; support crossbar 400, "X" shaped connecting frame 500, connecting rod 510, slider 520. Detailed Implementation

[0024] Example 1:

[0025] like Figures 1-2 As shown, a portable manhole cover opening device includes two sets of support frames 100, placed on both sides of the manhole cover. Each support frame 100 includes a base 110, a support seat 120, and a support rod 130. One end of the base 110 is hinged to the support seat 120, specifically connected by a hinge. The other end of the base 110 has a positioning hole 111 on its upper side. Multiple positioning holes 111 can be provided along the length of the base 110. The bottom of the support seat 120 has a support rod storage groove 121. The support rod 130 is rotatably installed in the support rod storage groove 121 via a pivot, allowing the support rod 130 to rotate. When rotated to a position parallel to the support seat 120, it is stored in the support rod storage groove 121. When rotated to a vertical position, its lower end is inserted into the positioning hole 111 to support the support seat 120. By storing the support rod 130 in the support rod storage groove 121 and rotating the support seat 120 relative to the base 110, the support frame 100 can be folded and stored.

[0026] The support base 120 has a support groove at its end to support the support crossbar 400. The two ends of the support crossbar 400 are set in the support grooves of the two sets of support frames 100 and are detachable. An assist rod 200 is provided on the support crossbar 400. The assist rod 200 is placed on the upper side of the support crossbar 400. In actual use, a groove can be provided on the support crossbar 400 for the placement, positioning and left and right limit of the assist rod 200. The groove is set as an arc structure with a length greater than the diameter of the assist rod 200, which can limit the assist rod 200 to a certain extent without affecting the forward and backward swing and horizontal rotation of the assist rod 200.

[0027] The end of the assist rod 200 is provided with a manhole cover connecting assembly 300. In this embodiment, the manhole cover connecting assembly 300 includes two sets of chains 310, and the lower end of the chains 310 is provided with a hook 320, which has an inverted "T" shaped structure.

[0028] In practical use, place two sets of support frames 100 on both sides of the manhole cover. Adjust the distance between the two sets of support frames 100 according to the size of the manhole cover. Then rotate the support base 120 to lift one end of the support base 120. Then rotate the support rod 130 and insert the lower end of the support rod 130 into the positioning hole 111 to achieve the overlap of the support frames 100. Then install the support crossbar 400 and place the assist rod 200 on the support crossbar 400. Insert the hook 320 along the strip hole of the manhole cover and then rotate it at an angle so that the hook 320 is perpendicular to the strip hole of the manhole cover, thus connecting the manhole cover connecting component 300 to the manhole cover. According to the lever principle, press down on one end of the assist rod 200 to lift the manhole cover upward. Then rotate the assist rod 200 horizontally to move the manhole cover to a suitable position. Closing the manhole cover is the same as the above operation.

[0029] Example 2:

[0030] Unlike the embodiments, such as Figure 2 As shown, one of the two sets of support grooves is a through groove 122, and the other is a support crossbar storage groove 123 set inside the support base 120. The support crossbar 400 is rotatably installed at the end of the support crossbar storage groove 123 via a pivot. After the support crossbar 400 is rotated to a horizontal state, it is inserted into the through groove 122 to support the assist rod 200. When it is stored, the support crossbar 400 rotates into the support crossbar storage groove 123 for storage.

[0031] Preferably, the base 110 has a storage hole 114 at one end for storing the assist rod 200. After use, the assist rod 200 can be directly inserted into the storage hole 114 for storage, making it convenient to carry.

[0032] In practical use, an extension rod can be installed at the end of the assist rod 200. The extension rod is threadedly connected to the assist rod 200, and an extension rod can be added as needed to save effort. Both sets of bases 110 are provided with storage holes for placing the assist rod 200 and the extension rod, respectively.

[0033] Preferably, the end of the base 110 away from the hinged end with the support 120 is provided with an end plate 112, and the upper side of the support 120 is flush with the upper side of the end plate 112 after the support 120 is rotated to a horizontal state.

[0034] The end plate 112 is provided with a limiting plate 113 on its upper side. One end of the limiting plate 113 is installed on the top of the end plate 112 via a rotating shaft, and the other end is rotated to the upper side of the support seat 120 to limit and lock the support seat 120.

[0035] When the support base 120 needs to be opened for support use, the end of the limiting plate 113 rotates away from the upper side of the support base 120, and the support base 120 can be rotated and opened normally. After use, the support base 120 rotates to a horizontal state, and then the end of the limiting plate 113 rotates to the upper side of the support base 120 to lock the support base 120 in rotation.

[0036] Preferably, an "X"-shaped connecting frame 500 is provided between the two sets of bases 110. By providing the "X"-shaped connecting frame 500, the position of the two sets of support frames 100 can be prevented from moving during use, thereby improving the stability of the entire device.

[0037] The "X"-shaped connecting frame 500 includes two sets of cross-hinged connecting rods 510. A slide rail groove 115 is provided inside the base 110. One end of each connecting rod 510 is hinged within the slide rail groove 115, and the other end is hinged to a slider 520. The slider 520 moves along the slide rail groove 115. By sliding the slider 520, the end of the connecting rod 510 is pulled, adjusting the cross angle of the two sets of connecting rods 510, thereby adjusting the distance between the two sets of support frames 100.

[0038] When the two sets of bases 110 come close together, the "X"-shaped connecting frame 500 folds and is stored in the slide rail groove 115.

[0039] In practical use, a strip hole that runs through the slide rail groove 115 can be provided on the upper side of the base 110 for installing locking screws. The locking screws are installed in the strip hole to lock and press the slider 520 to prevent it from moving at will.

[0040] In practical use, pull the two sets of support frames 100, and adjust the distance between the two sets of support frames 100 by adjusting the cross angle of the two sets of connecting rods 510. Place the two sets of support frames 100 on both sides of the manhole cover. Adjust the distance between the two sets of support frames 100 according to the size of the manhole cover. Then rotate the support base 120 to lift one end of the support base 120. Then rotate the support rod 130 and insert the lower end of the support rod 130 into the positioning hole 111 to achieve the overlap of the support frames 100. Then install the support crossbar 400, place the assist rod 200 on the support crossbar 400, and insert the hook 320 along the strip hole of the manhole cover. Then rotate it at an angle so that the hook 320 is perpendicular to the strip hole of the manhole cover to achieve the connection between the manhole cover connecting component 300 and the manhole cover. According to the lever principle, press down on one end of the assist rod 200 to lift the manhole cover upward. Then rotate the assist rod 200 horizontally to move the manhole cover to the appropriate position. After completing the operation, insert the assist rod 200 into the storage hole 114. First, increase the distance between the two sets of support frames 100 to be greater than the length of the support crossbar 400. Rotate the support crossbar 400 to store it in the support crossbar storage slot 123. Then, rotate the support rod 130 to store it in the support rod storage slot 121. Close the support base 120 to make it rotate into a horizontal state. Then, lock the support base 120 with the limiting plate 113. The stored state is as follows. Figure 3 As shown, it is easy to carry and transfer.

[0041] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The embodiments and features described in this application can be arbitrarily combined without conflict. The protection scope of this utility model should be defined as the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A portable manhole cover opening device, characterized by: The utility model provides a kind of support frame, including two groups of support frame (100), support frame (100) includes base (110), base (110) one end is hinged with support base (120), and the other end of base (110) upper side is equipped with positioning hole (111), support base (120) bottom is equipped with support rod storage slot (121), support rod (130) is rotatably installed in support rod storage slot (121) by pivot, support rod (130) is inserted into positioning hole (111) after rotating to vertical state and supports support base (120), and support base (120) end is equipped with the support groove for supporting support cross bar (400), and support cross bar (400) is equipped with power lever (200) on, and power lever (200) end is equipped with well lid connecting assembly (300).

2. A portable manhole cover opening device according to claim 1, characterized in that: The well lid connecting assembly (300) includes two groups of padlocks (310), and the lower end of the padlock (310) is provided with a hook (320).

3. A portable manhole cover opening device according to claim 2, wherein: The hook (320) is a reverse "T" shape structure.

4. A portable manhole cover opening device according to claim 1, characterized in that: One of the two groups of support grooves is a through groove (122), and the other group is a support cross bar storage slot (123) arranged on the inner side of the support base (120), and the support cross bar (400) is rotatably installed at the end of the support cross bar storage slot (123) by a pivot, and the support cross bar (400) is inserted into the through groove (122) after rotating to a horizontal state.

5. A portable manhole cover opening device according to claim 1, characterized in that: The end of the base (110) is provided with a storage hole (114) for storing the power lever (200).

6. A portable manhole cover opening device according to claim 1, characterized in that: The end of the base (110) away from the hinge with the support base (120) is provided with an end plate (112), and the upper side of the support base (120) is flush with the upper side of the end plate (112) after rotating to a horizontal state.

7. A portable manhole cover opening device according to claim 6, characterized in that: The upper side of the end plate (112) is provided with a limiting plate (113), one end of which is rotatably installed on the top of the end plate (112), and the other end is rotatable to the upper side of the support base (120) to limit and lock the support base (120).

8. A portable manhole cover opening device according to claim 1, characterized in that: The two groups of bases (110) are provided with an "X"-shaped connecting frame (500) therebetween, which includes two groups of connecting rods (510) cross-hinged, and the inner side of the base (110) is provided with a sliding rail groove (115), one end of the connecting rod (510) is hingedly arranged in the sliding rail groove (115), and the other end is hingedly connected with a sliding block (520), and the sliding block (520) moves along the sliding rail groove (115).

9. A portable manhole cover opening device according to claim 8, characterized in that: When the two groups of bases (110) are close to each other, the "X"-shaped connecting frame (500) is folded and stored in the sliding rail groove (115).

10. A portable manhole cover opening device according to claim 1, characterized in that: The upper side of the support cross bar (400) is provided with a groove for placing the power lever (200).

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