Crowbar for opening light well lid

Abstract

The utility model discloses a crowbar for opening a light well lid, and relates to the technical field of municipal engineering. The crowbar comprises a crowbar body, a first damping hinge is connected to the middle of the lower portion of the outer side of the crowbar body, a lever shaft is connected to the side wall of the first damping hinge, clamping assemblies are symmetrically arranged at the two ends of the outer side of the crowbar body in a sleeved mode, and each clamping assembly comprises a hollow sleeve arranged at the two ends of the crowbar body in a sleeved mode. The first bolt is in threaded connection with internal threaded hole grooves formed in the upper portion of the outer side of the crowbar body at equal intervals; a supporting assembly is arranged on the lower side of the lever shaft and comprises a third damping hinge connected to the lower side of the lever shaft, the outer side of a movable shaft connected to the lower end of the third damping hinge is sleeved with a hollow shaft, and the outer side of a bearing body in interference fit with the lower end of the outer side of the hollow shaft is rotationally connected with a circular base. According to the light well lid opening device, light well lids of different sizes can be opened conveniently, practicability is improved, and the position of the opened light well lids can be adjusted conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal engineering, in particular to a crowbar used for opening a lightweight manhole cover. Background Art

[0002] Municipal engineering refers to the construction of urban public infrastructure, public service facilities and municipal public works; such as water supply, drainage, gas, heat, gardening, sanitation, and water supply and drainage pipelines, etc. During the construction of water supply and drainage pipelines, workers will install lightweight manhole covers at the wellheads to fill the gaps, which is conducive to ensuring the flatness of the road surface and smooth road traffic. The staff will use crowbars to open the lightweight manhole covers to facilitate the staff to enter the well for inspection and maintenance.

[0003] After searching, the patent document with patent announcement number CN219603212U discloses a portable manhole cover opening tool, including a crowbar body, one end of which is provided with a flat crowbar that is tilted to one side, characterized in that: a roller is rotatably installed at the other end of the crowbar body, a handle is fixedly installed at the end of the crowbar body away from the roller, and two L-shaped hooks are rotatably installed on the side of the crowbar body, and the two L-shaped hooks are symmetrically distributed on the left and right, and the hooks are facing each other. It has a simple structure and ingenious design. A crowbar is provided at one end of the crowbar body, which can be used as a crowbar; through the cooperation of the handle and the roller, it is easy to drag the crowbar body, which increases portability; by providing two L-shaped hooks, it can meet the use requirements of single-hole manhole covers and double-hole manhole covers, increasing applicability, meeting market demand, and being suitable for promotion.

[0004] However, it still has the following disadvantages in actual use:

[0005] The existing portable manhole cover opening tool, during use, uses a hook to hang a lightweight manhole cover, which is convenient for opening the lightweight manhole cover later. However, due to the inconsistency of the sizes of the lightweight manhole covers, the distances between the holes on the lightweight manhole covers are inconsistent, and the position of the hook on the existing portable manhole cover opening tool is not easy to adjust, so that the existing portable manhole cover opening tool is not suitable for opening lightweight manhole covers of different sizes, which reduces the practicality of the existing portable manhole cover opening tool.

[0006] 2. During the use of the existing portable manhole cover opening tool, the worker is required to move the opened lightweight manhole cover to a position far away from the wellhead. However, due to the heavy weight of the manhole cover, the worker's workload of moving the manhole cover will be increased, making the worker easily fatigued. Utility Model Content

[0007] The utility model aims to provide a crowbar for opening a lightweight manhole cover, which solves the problems of low practicability and inconvenience in moving the manhole cover of existing portable manhole cover opening tools.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model discloses a crowbar for opening a lightweight manhole cover, comprising a crowbar body, a first damping hinge connected to the middle of the lower outer side of the crowbar body, a lever shaft connected to the side wall of the first damping hinge, clamping components symmetrically sleeved at both ends of the outer side of the crowbar body, the clamping components comprising a hollow sleeve sleeved at both ends of the crowbar body, a first bolt threadedly connected to the upper side of the hollow sleeve, the first bolt being threadedly connected to an internal threaded hole groove equidistantly provided at the upper outer side of the crowbar body; a supporting component is arranged at the lower side of the lever shaft, the supporting component comprising a third damping hinge connected to the lower side of the lever shaft, a hollow shaft sleeved at the outer side of a movable shaft connected to the lower end of the third damping hinge, a circular seat rotatably connected to the outer side of a bearing body which is interference-connected at the lower end of the outer side of the hollow shaft.

[0010] Furthermore, a slide groove is symmetrically provided on the front and rear outer sides of the crowbar body, and sliding blocks symmetrically fixed to the front and rear inner side walls of the hollow sleeve are slidably connected to the slide groove.

[0011] Furthermore, a U-shaped seat is connected to the lower side of the second damping hinge connected to the lower side of the hollow sleeve, and a connecting shaft is rotatably connected inside the first damping bearing which is interference-connected in the middle of the lower side of the U-shaped seat, and a clamping block is fixed to the lower end of the connecting shaft.

[0012] Furthermore, a limit block connected to the upper end of the connecting shaft contacts the inner bottom side wall of the U-shaped seat, and an outer diameter of the limit block is greater than an outer diameter of the first damping bearing.

[0013] Furthermore, a handle is fixedly connected to the end of the lever shaft away from the first damping hinge. The handle is in an "I" shape, and an anti-slip pattern is provided in the middle of the outer side of the handle.

[0014] Furthermore, a second bolt is threadedly connected to the end of the outer side of the hollow shaft away from the circular seat, and the inner end of the second bolt is threadedly connected to the inner threaded through holes arranged at equal intervals on the outer side of the movable shaft.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a clamping assembly, which facilitates adjusting the distance between the two clamping assemblies according to the actual size of the lightweight manhole cover, so that the two clamping blocks are suitable for opening lightweight manhole covers of different sizes, thereby improving the application range of the crowbar for opening lightweight manhole covers and enhancing practicality.

[0017] The utility model provides a support component to facilitate the movement of the opened lightweight manhole cover to a position away from the wellhead, so as to facilitate the workers to enter the well from the wellhead, and greatly reduce the workload of the workers when moving the lightweight manhole cover, thereby reducing the fatigue of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 A three-dimensional schematic diagram of a crowbar for opening a lightweight manhole cover;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0021] Figure 3 It is a connection diagram of the U-shaped seat and the connecting shaft.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Lever shaft; 11. First damping hinge; 12. Handle; 121. Anti-skid pattern; 2. Crowbar body; 21. Internally threaded hole groove; 22. Slide groove; 3. Holding assembly; 31. Hollow sleeve; 311. First bolt; 312. Sliding block; 32. Second damping hinge; 321. U-shaped seat; 322. First damping bearing; 33. Connecting shaft; 331. Limit block; 332. Block; 4. Support assembly; 41. Round seat; 411. Bearing body; 42. Hollow shaft; 421. Second bolt; 43. Movable shaft; 431. Internally threaded through hole; 432. Third damping hinge. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1 As shown, the utility model is a crowbar for opening a lightweight manhole cover, comprising a crowbar body 2, a first damping hinge 11 is connected to the middle of the lower outer side of the crowbar body 2, a lever shaft 1 is connected to the side wall of the first damping hinge 11, and a clamping assembly 3 is symmetrically sleeved at both ends of the outer side of the crowbar body 2, and the clamping assembly 3 includes a hollow sleeve 31 sleeved at both ends of the crowbar body 2, and a first bolt 311 is threadedly connected to the upper side of the hollow sleeve 31, and the first bolt 311 is threadedly connected to the inner threaded hole groove 21 equidistantly provided at the upper outer side of the crowbar body 2, so that the distance between the two hollow sleeves 31 and the distance between the two clamping assemblies 3 can be adjusted according to the actual distance between the holes on the lightweight manhole cover, so that the crowbar for opening the lightweight manhole cover is suitable for lightweight manhole covers of different sizes, thereby improving practicality;

[0026] The outer side of the crowbar body 2 is symmetrically provided with a slide groove 22, and the sliders 312 symmetrically fixed to the front and rear inner side walls of the hollow sleeve 31 are slidably connected to the slide groove 22, which effectively limits the straight-line movement of the hollow sleeve 31 on the crowbar body 2, effectively prevents the hollow sleeve 31 from rotating on the crowbar body 2, and facilitates the adjustment of the position of the hollow sleeve 31;

[0027] The lower side of the second damping hinge 32 connected to the lower side of the hollow sleeve 31 is connected to a U-shaped seat 321, and the first damping bearing 322 which is interference-connected in the middle of the lower side of the U-shaped seat 321 is rotatably connected to the inside thereof, and a clamping block 332 is fixedly connected to the lower end of the connecting shaft 33, which facilitates the unfolding and folding of the connecting shaft 33, thereby reducing the volume and making it convenient to carry;

[0028] Among them Figure 3 As shown, the limit block 331 connected to the upper end of the connecting shaft 33 contacts the inner bottom side wall of the U-shaped seat 321, and the outer diameter of the limit block 331 is larger than the outer diameter of the first damping bearing 322, which effectively prevents the connecting shaft 33 from moving downward and separating from the U-shaped seat 321, so that the connecting shaft 33 cooperates with the clamping block 332 to clamp the lightweight manhole cover more stably, thereby improving the safety of the lightweight manhole cover when it is opened;

[0029] Among them Figure 2 As shown, a handle 12 is fixedly connected to the end of the lever shaft 1 away from the first damping hinge 11. The handle 12 is in an "I" shape. An anti-slip pattern 121 is provided in the middle of the outer side of the handle 12 to facilitate the application of external force to the lever shaft 1 and the opening of the lightweight manhole cover. The anti-slip pattern 121 effectively prevents the hand from slipping against the handle 12.

[0030] When the above arrangement is used, the first bolt 311 is loosened clockwise, an external force is applied to the hollow sleeve 31, the slider 312 slides along the slide groove 22 on the crowbar body 2, the position of the hollow sleeve 31 is adjusted until the clamping block 332 is adjusted to align with the hole on the lightweight manhole cover, the first bolt 311 is tightened counterclockwise, the distance between the two hollow sleeves 31 is determined, the clamping block 332 is passed through the hole on the lightweight manhole cover, and the connecting shaft 33 is rotated so that the clamping block 332 moves in an arc with the connecting shaft 33 as a fixed point until the clamping block 332 is misaligned with the hole on the lightweight manhole cover, and the clamping assembly 3 clamps the lightweight manhole cover.

[0031] Among them Figure 1As shown, a support assembly 4 is provided at the lower side of the lever shaft 1, and the support assembly 4 includes a third damping hinge 432 connected to the lower side of the lever shaft 1, and a hollow shaft 42 is sleeved on the outer side of a movable shaft 43 connected to the lower end of the third damping hinge 432, and a circular seat 41 is rotatably connected to the outer side of a bearing body 411 which is interference-connected at the lower end of the outer side of the hollow shaft 42, and the support assembly 4 serves as a fulcrum when the lever shaft 1 is working, and the storage of the bearing body 411 facilitates the rotation of the support assembly 4, and facilitates the movement of the opened lightweight manhole cover to a position outside the wellhead, so as to facilitate the staff to enter the well from the wellhead;

[0032] The end of the outer side of the hollow shaft 42 away from the circular seat 41 is threadedly connected with a second bolt 421, and the inner threaded through holes 431 provided at equal intervals on the outer side of the movable shaft 43 are threadedly connected with the inner end of the second bolt 421, so as to facilitate adjustment of the length of the movable shaft 43 entering the hollow shaft 42, adjust the total length between the movable shaft 43 and the hollow shaft 42, and adjust the length of the support assembly 4;

[0033] When the above arrangement is used, the handle 12 is pressed downward, and the lever shaft 1 moves in an arc with the third damping hinge 432 as a fixed point. The end of the lever shaft 1 away from the handle 12 moves upward, the crowbar body 2 moves upward, the clamping block 332 moves upward, and the clamped lightweight manhole cover moves upward to open. An external force is applied to the handle 12, the hollow shaft 42 rotates on the circular seat 41, the lever shaft 1 rotates, and the crowbar body 2 rotates, driving the clamped lightweight manhole cover away from the wellhead.

[0034] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A crowbar for opening a lightweight manhole cover, comprising a crowbar body (2), a first damping hinge (11) being connected to the middle of the lower outer portion of the crowbar body (2), a lever shaft (1) being connected to the side wall of the first damping hinge (11), characterized in that: The two ends of the outer side of the crowbar body (2) are symmetrically sleeved with a clamping assembly (3), the clamping assembly (3) comprising a hollow sleeve (31) sleeved on the two ends of the crowbar body (2), the upper side of the hollow sleeve (31) is threadedly connected with a first bolt (311), and the first bolt (311) is threadedly connected to an internal threaded hole groove (21) provided at equal intervals on the upper part of the outer side of the crowbar body (2); A support assembly (4) is arranged at the lower side of the lever shaft (1), and the support assembly (4) comprises a third damping hinge (432) connected to the lower side of the lever shaft (1); a hollow shaft (42) is sleeved on the outer side of a movable shaft (43) connected to the lower end of the third damping hinge (432); and a circular seat (41) is rotatably connected to the outer side of a bearing body (411) which is interference-connected at the lower end of the outer side of the hollow shaft (42).

2. A crowbar for opening a lightweight manhole cover according to claim 1, characterized in that: The outer side of the crowbar body (2) is symmetrically provided with a slide groove (22) in front and back, and the sliding block (312) symmetrically fixed to the front and back inner side walls of the hollow sleeve (31) is slidably connected to the slide groove (22).

3. A crowbar for opening a lightweight manhole cover according to claim 2, characterized in that: The lower side of the second damping hinge (32) connected to the lower side of the hollow sleeve (31) is connected to a U-shaped seat (321), and the middle part of the lower side of the U-shaped seat (321) is rotatably connected to the first damping bearing (322) which is interference-connected thereto. The lower end of the connecting shaft (33) is fixedly connected to a clamping block (332).

4. A crowbar for opening a lightweight manhole cover according to claim 3, characterized in that: A limit block (331) connected to the upper end of the connecting shaft (33) contacts the inner bottom side wall of the U-shaped seat (321), and an outer diameter of the limit block (331) is greater than an outer diameter of the first damping bearing (322).

5. The crowbar for opening a lightweight manhole cover according to claim 1, characterized in that: A handle (12) is fixedly connected to the end of the lever shaft (1) away from the first damping hinge (11); the handle (12) is in the shape of an "I" character, and an anti-slip pattern (121) is provided in the middle of the outer side of the handle (12).

6. A crowbar for opening a lightweight manhole cover according to claim 1, characterized in that: The end of the outer side of the hollow shaft (42) away from the circular seat (41) is threadedly connected to a second bolt (421), and the inner end of the second bolt (421) is threadedly connected to the inner threaded through holes (431) formed at equal intervals on the outer side of the movable shaft (43).

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