Well lid lifting device convenient to carry

Abstract

The utility model relates to a portable well lid lifting device which comprises a ram, a lantern ring A is sleeved on the ram, a connecting rod is fixedly connected to the lantern ring A, and a hook matched with an operation hole of a well lid is fixedly arranged at one end, far away from the lantern ring A, of the connecting rod. The well lid lifting device convenient to assemble and disassemble is composed of the ram, the lantern ring A, the connecting rod and the hook, and the well lid lifting device is convenient to carry, simple, efficient, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover extraction devices, in particular to a manhole cover extraction device that is easy to carry. Background Art

[0002] With the rapid development of society, the infrastructure construction in China is becoming more and more perfect. In municipal engineering and urban planning, drainage pipelines are important facilities in urban construction, and manhole covers need to be installed between the drainage pipelines and the road surface; most of the manhole covers in general parks or communities are prefabricated manhole covers filled with marble bricks and wrapped with stainless steel, which is very inconvenient for later use, and it is difficult to extract them in normal weather, and it is even more difficult in case of rain or snow.

[0003] The prior art application No. 202321047991.X discloses a construction extraction manhole cover device that is easy to operate, including: a fixed top frame, and columns are installed at the ends of the four brackets of the fixed top frame... A rotating base connected to the lifting bracket is installed at the bottom of the extraction screw; the lifting bracket is adjusted by the provided extraction screw, so that the manhole cover can be lifted, and manhole cover extraction frames are installed on the four brackets of the lifting bracket, and the manhole cover can be fixed at four points.

[0004] However, there are some problems with the above technical solutions: the manhole cover extraction device is large in volume and inconvenient to carry, especially when only a small number of manhole covers need to be moved, it is time-consuming and laborious. Summary of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides a manhole cover extraction device that is easy to assemble and disassemble, convenient to carry, simple, efficient, safe and reliable, and easy to operate, which is composed of a pick rod, a collar A, a connecting rod and a hook.

[0006] The utility model is realized by the following technical solutions. A manhole cover extraction device that is easy to carry is provided, including a pick rod, a collar A is sleeved on the pick rod, a connecting rod is fixedly connected to the collar A, and a hook adapted to the operation hole of the manhole cover is fixedly provided at the end of the connecting rod away from the collar A; a manhole cover extraction device that is easy to assemble and disassemble is formed by the pick rod, the collar A, the connecting rod and the hook, which is convenient to carry.

[0007] As an optimization, it further includes a buckle adapted to the operation hole of the manhole cover. The buckle includes a collar B connected to the hook, a suspension rod is fixedly connected to the collar B, a connecting rod A is hinged to the suspension rod through a hinge shaft, and a support rod is fixedly connected to the end of the connecting rod A away from the hinge shaft; the connecting rod A is fixedly connected to the middle part of the support rod, and the size of the support rod in the axial direction of the support rod is greater than the aperture of the operation hole; it is convenient to enter the operation hole of the manhole cover and extract the manhole cover through the buckle, which is simple and convenient.

[0008] As an optimization, the sum of the distance from the axis of the connecting rod to either end of the strut and half of the dimension of the connecting rod A in the axial direction of the strut is greater than the aperture of the operation hole; by increasing the length of the strut, it is prevented that the buckle disengages from the operation hole of the manhole cover due to displacement during the extraction of the manhole cover.

[0009] As an optimization, a sleeve that slides along the axial direction of the suspension rod is sleeved on the suspension rod, and the sleeve is hinged to the end of the strut far from the connecting rod A through a connecting rod B; the positions of the strut and the connecting rod A are adjusted through the sleeve and the connecting rod B, facilitating the insertion of the buckle into the operation hole or the removal of the buckle from the operation hole.

[0010] The beneficial effects of the present utility model are as follows: The manhole cover extraction device that is convenient for assembly and disassembly is composed of a pick rod, a collar A, a connecting rod, and a hook, which is convenient to carry; the buckle facilitates entering the operation hole of the manhole cover and extracting the manhole cover, which is simple and convenient; by increasing the length of the strut, it is prevented that the buckle disengages from the operation hole of the manhole cover due to displacement during the extraction of the manhole cover; the positions of the strut and the connecting rod A are adjusted through the sleeve and the connecting rod B, facilitating the insertion of the buckle into the operation hole or the removal of the buckle from the operation hole. Description of the Drawings

[0011] Figure 1 It is a schematic structural diagram of the present utility model;

[0012] Figure 2 It is a diagram of the usage state (1) of the present utility model;

[0013] Figure 3 It is a schematic installation diagram (front view) of the buckle of the present utility model;

[0014] Figure 4 It is a schematic installation diagram (side view) of the buckle of the present utility model;

[0015] Figure 5 It is a diagram of the usage state (2) of the present utility model;

[0016] As shown in the figure:

[0017] 1. Pick rod, 2. Collar A, 3. Connecting rod, 4. Hook, 5. Buckle, 6. Manhole cover, 501. Collar B, 502. Suspension rod, 503. Hinge shaft, 504. Connecting rod A, 505. Strut, 506. Connecting rod B, 507. Sleeve. Detailed Implementation Modes

[0018] To clearly illustrate the technical features of this solution, the following elaborates on this solution through specific implementation modes.

[0019] Such as Figure 1 And Figure 5The portable manhole cover extraction device of the present utility model shown in the figure includes a pick rod 1, a collar A2 is sleeved on the pick rod 1, a connecting rod 3 is fixedly connected to the collar A2, and a hook 4 adapted to the operation hole of the manhole cover 6 is fixedly provided at one end of the connecting rod 3 away from the collar A2.

[0020] The hooks 4 respectively pass through the operation holes of the manhole cover 6 and hook the bottom of the manhole cover 6. The pick rod 1 passes through the collar A2 in sequence. The staff lifts the pick rod 1 upward, and the pick rod 1 extracts the manhole cover 6 through the collar A2, the connecting rod 3 and the hook 4.

[0021] As Figure 1 、 Figure 2 、 Figure 3 And Figure 4 shown, it also includes a buckle 5 adapted to the operation hole of the manhole cover 6. The buckle 5 includes a collar B501 connected to the hook 4. A suspension rod 502 is fixedly connected to the collar B501. A link A504 is hinged to the suspension rod 502 through a hinge shaft 503. A support rod 505 is fixedly connected to one end of the link A504 away from the hinge shaft 503; the link A504 is fixedly connected to the middle part of the support rod 505, and the dimension of the support rod 505 in the axial direction of the support rod 505 is greater than the aperture of the operation hole.

[0022] The axis of the hinge shaft 503 is perpendicular to the axis of the suspension rod 502, the axis of the hinge shaft 503 is perpendicular to the axis of the link A504, the axis of the link A504 is perpendicular to the axis of the support rod 505, and the link A504 is fixedly connected to the exact middle position of the support rod 505 in the axial direction of the support rod 505; the distance from the axis of the hinge shaft 503 to the side of the support rod 505 away from the hinge shaft 503 is L1, the distance from the axis of the hinge shaft 503 to the side of the link A504 is L2, the length of the support rod 505 in the axial direction of the support rod 505 is L3, the width of the support rod 505 in the direction perpendicular to the axial direction of the support rod 505 is L4, the aperture of the operation hole in the axial direction of the support rod 505 is L5, and the aperture of the operation hole in the direction perpendicular to the axial direction of the support rod 505 is L6. L1 + L2 ≤ L5, L3 > L5, L4 ≤ L6.

[0023] Rotate the support rod 505 and the link A504 on the suspension rod 502 until the axis of the support rod 505 is close to being parallel to the axis of the suspension rod 502; the end of the buckle 5 provided with the support rod 505 moves downward and respectively passes through the operation holes of the manhole cover 6, and the support rod 505 enters below the manhole cover 6; under the action of gravity, the support rod 505 rotates to a state where the axis of the support rod 505 is close to the horizontal state, pull the buckle 5 upward, and the support rod 505 hooks the bottom of the manhole cover 6; pass the hooks 4 through the collar B501 respectively to complete the hook connection with the buckle 5.

[0024] As Figure 2 And Figure 3The sum of the distance from the axis of the shown connecting rod to either end of the support rod 505 and half of the dimension of the connecting rod A504 in the axial direction of the support rod 505 is greater than the aperture diameter of the operation hole; 1 / 2L3 + L2 > L5.

[0025] During the extraction process of the manhole cover 6, if the buckle 5 displaces within the operation hole, the side surface of the connecting rod A504 contacts the inner wall of the operation hole, and either end of the support rod 505 still remains directly below the manhole cover 6 and hooks the bottom of the manhole cover 6.

[0026] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown in ,

[0025] , Figure 1 , Figure 2 , Figure 3 , Figure 4 , a sleeve 507 that slides along the axial direction of the suspension rod 502 is sleeved on the suspension rod 502. The sleeve 507 is hinged to the end of the support rod 505 away from the connecting rod A504 through a connecting rod B506; the suspension rod 502 and the sleeve 507 extend in the vertical direction. The two ends of the connecting rod B506 are respectively hinged to the sleeve 507 and the support rod 505, and the connection positions of the connecting rod A504 and the connecting rod B506 in the axial direction of the support rod 505 are different.

[0027] Pull the sleeve 507 upward along the vertical direction on the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge axis 503 on the suspension rod 502 through the connecting rod B506 until the axis of the support rod 505 approaches to be parallel to the axis of the suspension rod 502; the end of the buckle 5 provided with the support rod 505 moves downward and passes through the operation hole of the manhole cover 6, and the support rod 505 enters below the manhole cover 6; Push the sleeve 507 downward along the vertical direction on the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge axis 503 on the suspension rod 502 through the connecting rod B506 until the axis of the support rod 505 approaches the horizontal state.

[0028] Pull the sleeve 507 downward along the vertical direction on the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge axis 503 on the suspension rod 502 through the connecting rod B506 until the axis of the support rod 505 approaches to be parallel to the axis of the suspension rod 502; Pull the buckle 5 upward along the vertical direction. The end of the buckle 5 provided with the support rod 505 moves upward and passes through the operation hole of the manhole cover 6, and the support rod 505 enters above the manhole cover 6; The buckle 5 disengages from the manhole cover 6.

[0029] During the actual production process, the sleeve 507 is pulled upward vertically along the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge shaft 503 on the suspension rod 502 through the connecting rod B506 until the axis of the support rod 505 is nearly parallel to the axis of the suspension rod 502. One end of the support rod 505 provided with the buckle 5 moves downward and passes through the operation hole of the manhole cover 6, and the support rod 505 enters below the manhole cover 6. The sleeve 507 is pushed downward vertically along the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge shaft 503 on the suspension rod 502 until the axis of the support rod 505 is nearly in a horizontal state. The buckle 5 is pulled upward, and the support rod 505 hooks the bottom of the manhole cover 6. The hook 4 is respectively passed through the collar B501 to complete the hooking connection with the buckle 5. The pick rod 1 passes through the collar A2 in sequence. The staff lifts the pick rod 1 upward, and the pick rod 1 extracts the manhole cover 6 through the collar A2, the connecting rod 3, the hook 4 and the buckle 5.

[0030] The pick rod 1 is withdrawn from the collar A2, and the pick rod 1 is separated from the connecting rod 3. The hook 4 is taken out of the collar B501, and the connecting rod 3 is separated from the buckle 5. The sleeve 507 is pulled downward vertically along the suspension rod 502. The sleeve 507 drives the support rod 505 and the connecting rod A504 to rotate around the hinge shaft 503 on the suspension rod 502 until the axis of the support rod 505 is nearly parallel to the axis of the suspension rod 502. The buckle 5 is pulled upward vertically. One end of the support rod 505 provided with the buckle 5 moves upward and passes through the operation hole of the manhole cover 6, and the support rod 505 enters above the manhole cover 6. The buckle 5 is disengaged from the manhole cover 6.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not a limitation to the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also fall within the scope of the claims of the present utility model.

Claims

1. A manhole cover extraction device that is convenient to carry, characterized in that: It includes a pick pole (1), a collar A (2) is sleeved on the pick pole (1), a connecting rod (3) is fixedly connected to the collar A (2), and a hook (4) adapted to the operation hole of the manhole cover (6) is fixedly provided at one end of the connecting rod (3) away from the collar A (2).

2. The portable manhole cover extraction device according to claim 1, characterized in that: It further includes a buckle (5) adapted to the operation hole of the manhole cover (6). The buckle (5) includes a collar B (501) connected to the hook (4), a suspension rod (502) is fixedly connected to the collar B (501), a connecting rod A (504) is hinged to the suspension rod (502) through a hinge shaft (503), and a support rod (505) is fixedly connected to one end of the connecting rod A (504) away from the hinge shaft (503); the connecting rod A (504) is fixedly connected to the middle part of the support rod (505), and the size of the support rod (505) in the axial direction of the support rod (505) is larger than the aperture of the operation hole.

3. The portable manhole cover extraction device according to claim 1, wherein: The sum of the distance from the axis of the connecting rod to any end of the support rod (505) and half of the size of the connecting rod A (504) in the axial direction of the support rod (505) is larger than the aperture of the operation hole.

4. The portable manhole cover extraction device according to claim 1, wherein: A sleeve (507) sliding axially along the suspension rod (502) is sleeved on the suspension rod (502), and the sleeve (507) is hinged to one end of the support rod (505) away from the connecting rod A (504) through a connecting rod B (506).

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