Labor-saving prying tool for municipal well lid

Abstract

The utility model discloses a labor-saving prying tool for a municipal well lid, and relates to the related technical field of municipal administration. The device comprises a main base, an auxiliary base, a crow bar and a pull rod, a vertical stud is fixed to the upper end of the main base, the crow bar is arranged above a rotating shaft, a lantern ring is fixed to the periphery of the crow bar, the rotating shaft is sleeved with the lantern ring, a vertically-penetrating through groove is formed in the crow bar, and the upper portion of the stud penetrates through the through groove and extends out; an end head is fixed to the end, away from the through groove, of the crow bar, symmetrical lug plates are fixed to the periphery of the end head, a pin shaft is rotationally connected between the two lug plates, and a pull rod is inserted into the middle of the pin shaft in a penetrating mode; an auxiliary base is arranged at the end, close to the pull rod, of the main base, and an insertion plate is fixed to the end, close to the main base, of the auxiliary base. By arranging the crow bar, the main base, the pull rod, the stud, the rotating shaft, the auxiliary base and the inserting plate, the problem that the manhole cover opening mode is not labor-saving enough is solved; and the problem that the well lid cannot be pulled and opened at a time, and an auxiliary hovering structure is needed to prevent secondary closing is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to municipal administration, and particularly relates to a labor-saving prying tool for a municipal manhole cover. Background Art

[0002] There are many underground pipelines in urban construction, such as sewers, underground gas pipelines, water pipelines, power pipelines, communication pipelines, national defense pipelines, etc. These pipelines must have an exit to the ground at intervals. The section from the pipeline to the ground is called a manhole. The manhole opening is usually flush with the ground, so a cover is needed. The cover used to cover the manhole is called a manhole cover. When inspecting and maintaining underground pipelines, the manhole cover needs to be opened, and equipment or workers enter the underground to work. However, when opening the manhole cover, corresponding tools are needed to assist in opening it. Usually, a pull rod that fits the through hole on the manhole cover is inserted, rotated, and then the manhole cover is pulled up. However, there are still the following disadvantages in actual operation:

[0003] First of all, it is quite laborious to pull up the manhole cover, and workers with less strength may not even be able to pull it up, so a more labor-saving manhole cover opening tool is needed;

[0004] Secondly, the manhole cover must be opened to a certain angle before it can be fully opened. However, when the manhole cover is pulled up from the top, it cannot be fully opened at once. Therefore, at this time, either the pulling direction is changed, or the manhole cover is suspended at a certain angle and then moved open by manpower. There is no support in this process, which can easily cause the manhole cover to close again. Utility Model Content

[0005] The purpose of the utility model is to provide a labor-saving prying tool for a municipal manhole cover. By arranging a crowbar, a main base, a pull rod, a stud, a rotating shaft, a secondary base, and a plug plate, the problem that the manhole cover opening method is not labor-saving enough; and the manhole cover cannot be opened by pulling it open in one go, and an auxiliary hovering structure is required to prevent secondary closing.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a labor-saving prying tool for a municipal manhole cover, comprising a main base, a sub-base, a pry bar and a pull rod, wherein a vertical stud is fixed to the upper end of the main base, a card slot is also provided on the main base on one side of the stud, symmetrically distributed trapezoidal blocks are fixed to the upper end of the main base outside the card slot, and a rotating shaft is rotatably connected to the upper part between the two trapezoidal blocks;

[0008] A crowbar is arranged above the rotating shaft, and a collar is fixed on the outer periphery of the crowbar, and the collar is sleeved outside the rotating shaft. A vertical through slot is opened on the crowbar, and the upper part of the stud passes through the through slot and extends out; an end of the crowbar away from the through slot is fixed, and symmetrical ear plates are fixed on the outer periphery of the end head, a pin is rotatably connected between the two ear plates, and a pull rod is inserted through the middle of the pin;

[0009] The end of the main base close to the pull rod is provided with a sub-base, and the end of the sub-base close to the main base is fixed with a plug plate.

[0010] Furthermore, both sides of the main base are rotatably connected with symmetrical running wheels, the trapezoidal blocks and studs are relatively distributed on the main base, and the trapezoidal blocks are closer to the auxiliary base.

[0011] Furthermore, a slot is provided at one end of the main base close to the auxiliary base, and the slot is connected to the card slot, the plug plate passes through the slot and enters the card slot, and an inclined block is fixed to the upper part of the end of the plug plate away from the auxiliary base.

[0012] Furthermore, a second pin hole is provided in the plug plate, a first pin hole is provided at the bottom of the slot, a limit pin is inserted into the second pin hole on the plug plate, and the lower part of the limit pin is inserted into the corresponding first pin hole.

[0013] Furthermore, the upper part of the stud is screwed to the threaded barrel, and the upper and lower ends of the threaded barrel are fixed with rolling balls, the outer periphery of the threaded barrel is fixed with symmetrically divided control rods, and the threaded barrel is located above the crowbar.

[0014] Furthermore, a handle is fixed to one end of the crowbar away from the end, a through hole is opened in the middle of the pin shaft, the upper part of the pull rod passes through the through hole and is fixed with a limiting block, and the lower part of the pull rod is fixed with symmetrically distributed limiting rods.

[0015] Furthermore, two running wheels are rotatably connected on both sides of the auxiliary base, and support blocks are fixed on both sides of the upper end of the auxiliary base, and the upper end surface of the support block is higher than the highest point of the two running wheels.

[0016] The utility model has the following beneficial effects:

[0017] The utility model solves the problem that the manhole cover opening method is not labor-saving enough by arranging a pry bar, a main base, a pull rod, a stud and a rotating shaft; the conventional manhole cover opening tool is a rod-shaped structure composed of a pull rod and a limit rod, the pull rod and the limit rod are inserted into the hole of the manhole cover, and then rotated ninety degrees to make the limit rod and the hole of the manhole cover intersect, and then pulled upward, the utility model arranges a pry bar horizontally, the end of which is connected to the pin shaft through the end and the ear plate, the top of the pull rod is inserted into the pin shaft, the pull rod itself can be rotated, and can be moved again around the pin shaft It can rotate to meet the needs of various angles. Hold the handle and press down. The crowbar will rotate around the shaft. The shaft is not in the center of the crowbar, but closer to the pull rod, so a labor-saving lever structure is formed, which makes it easier to lift the manhole cover. Even if you don't have enough strength, you can also rotate the threaded barrel to force the threaded barrel to descend and press down to contact the crowbar. At this time, the crowbar will also rotate, so that the pull rod can be used to pull up the manhole cover. This operation is more labor-saving, but a little more time-consuming, but more stable, and the crowbar will not be loosened due to lack of strength, causing the manhole cover to be closed again.

[0018] The utility model solves the problem that the manhole cover cannot be opened by pulling it open at one time and needs an auxiliary suspension structure to prevent secondary closing by arranging a sub-base and a plug plate. After the manhole cover is pulled up by using a crowbar and a pull rod, the sub-base is moved and inserted under the manhole cover, and then the plug plate is inserted into the first and second pin holes by using a limit pin to limit the position, forcing the sub-base and the support block to support the bottom of the manhole cover so that it is temporarily suspended, and then the pull rod is removed, and the manhole cover can be completely moved away very conveniently at this time. If the manhole cover needs to be replaced, the manhole cover can also be placed on the support block for support, which is convenient and labor-saving to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 A three-dimensional diagram of a labor-saving prying tool for a municipal manhole cover;

[0021] Figure 2 This is the state diagram when the manhole cover is pried up;

[0022] Figure 3 The structural diagram of the main base;

[0023] Figure 4 This is the structural diagram of the auxiliary base;

[0024] Figure 5 It is the connection diagram of the crowbar and the pull rod;

[0025] Figure 6 This is a disassembled diagram of the end cap and tie rod.

[0026] Reference numerals:

[0027] 1. Main base; 101. Travel wheel 1; 102. Stud; 103. Threaded barrel; 1031. Rolling ball; 1032. Control lever; 104. Trapezoidal block; 105. Slot; 1051. Pin hole 1; 1052. Slot; 106. Rotating shaft; 2. Sub-base; 201. Travel wheel 2; 202. Support block; 203. Insert plate; 2031. Pin hole 2; 204. Oblique block; 205. Limit pin; 3. Crowbar; 301. Through slot; 302. Handle; 303. End; 3031. Ear plate; 304. Ring; 305. Pin shaft; 3051. Through hole; 4. Pull rod; 401. Limit rod; 402. Limit block. DETAILED DESCRIPTION

[0028] 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.

[0029] See also Figure 1-6 As shown, the utility model is a labor-saving prying tool for a municipal manhole cover, comprising a main base 1, a sub-base 2, a pry bar 3 and a pull rod 4. A vertical stud 102 is fixed to the upper end of the main base 1. A slot 105 is also provided on the main base 1 on one side of the stud 102. A symmetrically distributed trapezoidal block 104 is fixed to the upper end of the main base 1 outside the slot 105. A rotating shaft 106 is rotatably connected to the upper portion between the two trapezoidal blocks 104.

[0030] A crowbar 3 is arranged above the rotating shaft 106, and a collar 304 is fixed to the outer periphery of the crowbar 3, and the collar 304 is sleeved outside the rotating shaft 106. A vertical through slot 301 is opened on the crowbar 3, and the upper part of the stud 102 passes through the through slot 301 and extends out; an end 303 is fixed to the end of the crowbar 3 away from the through slot 301, and symmetrical ear plates 3031 are fixed to the outer periphery of the end 303, a pin 305 is rotatably connected between the two ear plates 3031, and a pull rod 4 is inserted through the middle of the pin 305;

[0031] The crowbar 3 is used as the main prying tool. It is sleeved on the outside of the rotating shaft 106 through the collar 304. With the collar 304 as the center, the end of the crowbar 3 that is shorter than the end is installed with the pull rod 4 for pulling the manhole cover, and the longer end is the force-applying end. The end of the crowbar 3 is installed with an ear plate 3031 through the end 303. The ear plate 3031 has a rotatable connecting pin 305, and the pin 305 is plugged with the pull rod 4. Therefore, the pull rod 4 can rotate itself and can also rotate with the pin 305.

[0032] By pressing down the end of the pry bar 3 away from the pull rod 4, the pry bar 3 can be rotated around the rotating shaft 106. Even if the strength is insufficient, the threaded barrel 103 can be rotated to force the threaded barrel 103 to descend and press down to contact the pry bar 3. At this time, the pry bar 3 will also rotate, and the through groove 301 in the pry bar 3 will move outside the stud 102, so that the manhole cover can be pulled up by the pull rod 4. This operation is more labor-saving, but a little time-consuming, but more stable, and the manhole cover will not be closed again due to loosening of the pry bar 3 due to insufficient strength;

[0033] The main base 1 is provided with a sub-base 2 at one end close to the pull rod 4, and a plug plate 203 is fixed to one end of the sub-base 2 close to the main base 1;

[0034] The auxiliary base 2 is used as an auxiliary. When not in use, the plug plate 203 is inserted into the restricted position in the card slot 105, so that the auxiliary base 2 and the main base 1 can move as a whole; when in use, the plug plate 203 is partially moved out of the card slot 105, and the auxiliary base 2 moves out to the bottom of the opened manhole cover to provide temporary support for the opened manhole cover, which is convenient for subsequent full opening and use, and avoids the problem of secondary falling.

[0035] Both sides of the main base 1 are rotatably connected with symmetrical running wheels 101, the trapezoidal blocks 104 and the studs 102 are relatively distributed on the main base 1, and the trapezoidal blocks 104 are closer to the auxiliary base 2; the main base 1 can be conveniently moved by installing the running wheels 101.

[0036] A slot 1052 is provided at one end of the main base 1 close to the auxiliary base 2, and the slot 1052 is connected with the card slot 105, the plug plate 203 passes through the slot 1052 and enters the card slot 105, and an inclined block 204 is fixed to the upper part of the end of the plug plate 203 away from the auxiliary base 2;

[0037] The insert plate 203 is inserted into the card slot 105 through the slot 1052. The setting of the inclined block 204 allows the worker to push the inclined block 204 with his feet when operating the handle 302 of the crowbar 3, forcing the insert plate 203 and the auxiliary base 2 to move, and the operation can be done by one person.

[0038] A second pin hole 2031 is provided in the plug plate 203, a first pin hole 1051 is provided at the bottom of the card slot 105, and a limit pin 205 is inserted into the second pin hole 2031 on the plug plate 203, and the lower part of the limit pin 205 is inserted into the corresponding first pin hole 1051;

[0039] By inserting the limiting pin 205 into the first pin hole 1051 and the second pin hole 2031 on the same vertical line, the position of the plug plate 203 can be limited, thereby limiting the position of the auxiliary base 2.

[0040] The upper part of the stud 102 is screwed to the threaded barrel 103, and the upper and lower ends of the threaded barrel 103 are fixed with rolling balls 1031, and the outer periphery of the threaded barrel 103 is fixed with symmetrically divided control rods 1032, and the threaded barrel 103 is located above the crowbar 3;

[0041] The threaded barrel 103 can be rotated by operating the control rod 1032. The balls 1031 at the upper and lower ends of the threaded barrel 103 are also through structures. The diameter of the balls is greater than the width of the through slot 301 and can abut against the crowbar 3 above the through slot 301. Rotating the threaded barrel 103 downward can force the crowbar 3 at the through slot 301 to move downward, thereby lifting the other end of the crowbar 3.

[0042] A handle 302 is fixed to the end of the crowbar 3 away from the end 303, a through hole 3051 is opened in the middle of the pin shaft 305, the upper part of the pull rod 4 passes through the through hole 3051 and is fixed with a limit block 402, and the lower part of the pull rod 4 is fixed with symmetrically distributed limit rods 401; the pull rod 4 and the limit rods 401 at the bottom thereof are adapted to the holes on the manhole cover. After inserting them into the holes on the manhole cover and then rotating them ninety degrees, the limit rods 401 and the holes can form an interlaced structure, which is convenient for lifting the manhole cover, and the pin shaft 305 itself rotates, and when the pull rod 4 is pulled, the angle can be changed automatically with the height of pulling, and no motion interference will occur.

[0043] The two sides of the auxiliary base 2 are rotatably connected with the second walking wheel 201, and the two sides of the upper end of the auxiliary base 2 are fixed with support blocks 202, and the upper end surface of the support block 202 is higher than the highest point of the second walking wheel 201; the auxiliary base 2 can be assisted in walking by the second walking wheel 201.

[0044] The specific working principle of the utility model is as follows: first, the pull rod 4 and the limit rod 401 are inserted into the hole of the manhole cover, and then rotated ninety degrees to make the limit rod 401 intersect with the hole of the manhole cover, and then the handle 302 is pressed down to force the crowbar 3 to rotate around the rotating shaft 106, or the rotatable threaded cylinder 103 is rotated by the control rod 1032 to rotate the threaded cylinder 103 downward, so that the crowbar 3 at the position of the through groove 301 is forced to move downward, thereby lifting the other end of the crowbar 3. At this time, the pull rod 4 and the end 303 of the crowbar 3 are lifted. Lift up, thereby lift the manhole cover suspended at the lower part of the pull rod 4 to a certain angle, until it can no longer be lifted, at this time, pull out the limit pin 205 in advance, push the inclined block 204 with your foot, move the plug plate 203 and the auxiliary base 2, and move the auxiliary base 2 and the supporting block 202 to the bottom of the opened manhole cover, to achieve a temporary supporting effect, so that it is temporarily suspended, and then remove the pull rod 4 from the manhole cover, at this time it is very convenient to completely move the manhole cover; and if the manhole cover needs to be replaced, the manhole cover can also be placed on the supporting block 202 for support, which is convenient and labor-saving to carry.

[0045] 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 labor-saving prying tool for a municipal manhole cover, comprising a main base (1), a secondary base (2), a pry bar (3) and a pull rod (4), characterized in that: A vertical stud (102) is fixed to the upper end of the main base (1), a slot (105) is also provided on the main base (1) on one side of the stud (102), symmetrically distributed trapezoidal blocks (104) are fixed to the upper end of the main base (1) outside the slot (105), and a rotating shaft (106) is rotatably connected to the upper part between two of the trapezoidal blocks (104); A crowbar (3) is arranged above the rotating shaft (106), and a collar (304) is fixed on the outer periphery of the crowbar (3), and the collar (304) is sleeved outside the rotating shaft (106). A vertical through slot (301) is opened on the crowbar (3), and the upper part of the stud (102) passes through the through slot (301) and extends out; an end (303) is fixed to the end of the crowbar (3) away from the through slot (301), and symmetrical ear plates (3031) are fixed to the outer periphery of the end (303), a pin shaft (305) is rotatably connected between the two ear plates (3031), and a pull rod (4) is inserted through the middle of the pin shaft (305); A sub-base (2) is provided at one end of the main base (1) close to the pull rod (4), and a plug plate (203) is fixed to one end of the sub-base (2) close to the main base (1).

2. The labor-saving prying tool for a municipal manhole cover according to claim 1 is characterized in that: Both sides of the main base (1) are rotatably connected to symmetrical running wheels (101); the trapezoidal blocks (104) and the studs (102) are relatively distributed on the main base (1), and the trapezoidal blocks (104) are closer to the auxiliary base (2).

3. The labor-saving prying tool for a municipal manhole cover according to claim 1 is characterized in that: A slot (1052) is provided at one end of the main base (1) close to the auxiliary base (2), and the slot (1052) is connected to the card slot (105). The plug plate (203) passes through the slot (1052) and enters the card slot (105), and an inclined block (204) is fixed to the upper part of the end of the plug plate (203) away from the auxiliary base (2).

4. The labor-saving prying tool for a municipal manhole cover according to claim 1 is characterized in that: A second pin hole (2031) is provided in the plug plate (203), a first pin hole (1051) is provided at the bottom of the slot (105), a limit pin (205) is inserted into the second pin hole (2031) on the plug plate (203), and a lower portion of the limit pin (205) is inserted into the corresponding first pin hole (1051).

5. The labor-saving prying tool for a municipal manhole cover according to claim 1 is characterized in that: The upper part of the stud (102) is screwed to the threaded barrel (103), and the upper and lower ends of the threaded barrel (103) are both fixed with rolling balls (1031), the outer periphery of the threaded barrel (103) is fixed with symmetrically divided control rods (1032), and the threaded barrel (103) is located above the crowbar (3).

6. The labor-saving prying tool for a municipal manhole cover according to claim 1, characterized in that: A handle (302) is fixed to one end of the crowbar (3) away from the end head (303), a through hole (3051) is provided in the middle of the pin shaft (305), the upper part of the pull rod (4) passes through the through hole (3051) and is fixed with a limit block (402), and the lower part of the pull rod (4) is fixed with symmetrically distributed limit rods (401).

7. The labor-saving prying tool for a municipal manhole cover according to claim 1, characterized in that: Two sides of the auxiliary base (2) are rotatably connected to the second running wheel (201), and support blocks (202) are fixed on both sides of the upper end of the auxiliary base (2), and the upper end surface of the support block (202) is higher than the highest point of the second running wheel (201).

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