A municipal manhole cover lifting device

Abstract

The utility model provides a municipal well lid lifting device relates to technical field, include: base, support mechanism, set up in the below of base, and base and support mechanism rotatory connection, first force arm, rotatoryly set up in the above of base, second force arm, slidingly cover and set up in first force arm, first force arm is away from second force arm one end and is provided with connecting piece and abutment piece, connecting piece and well lid detachable connection, abutment piece is used for abutting well lid. According to the utility model through base and support mechanism relative rotatory connection, the first force arm and second force arm of connection on base can carry out the rotation of XY direction relative support mechanism, the first force arm can carry out the rotation of XZ direction relative base, in this way, when the connecting piece and abutment piece of second force arm form connection and abutment with well lid respectively can through the operation of second force arm makes with well lid relatively well mouth open and turn over to the position of well mouth side, in this way realizes the lifting and turning over of well lid.

Description

Technical Field

[0001] This utility model relates to the field of municipal construction technology, specifically to a municipal manhole cover lifting device. Background Technology

[0002] In the field of urban infrastructure construction and maintenance, municipal manhole covers serve as gateways to underground pipe networks, and workers often face numerous challenges when opening them.

[0003] On the one hand, manhole covers are generally quite heavy, making it extremely difficult for a single person to open them by hand. This not only requires a great deal of physical strength but also greatly increases the risk of muscle strains and sprains due to improper force application. On the other hand, existing auxiliary opening tools have significant drawbacks. Common tools such as iron hooks, while providing some assistance in opening manhole covers, lack a stable grip and balanced force distribution due to their simple structure, leading to instability during opening. The manhole cover is prone to slipping or tipping over during the opening process, posing a serious safety hazard. Therefore, this utility model proposes a municipal manhole cover lifting device to improve the above-mentioned problems. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects of the existing municipal manhole cover lifting device, which has a simple structure and therefore an unstable opening process, so as to provide a municipal manhole cover lifting device.

[0005] To solve the above problems, this utility model provides a municipal manhole cover lifting device, which includes:

[0006] Base

[0007] A support mechanism is disposed below the base, and the base and the support mechanism are rotatably connected;

[0008] The first lever arm is rotatably positioned above the base;

[0009] The second lever arm is slidably fitted inside the first lever arm. The end of the first lever arm away from the second lever arm is provided with a connector and an abutment. The connector and the manhole cover are detachably connected, and the abutment is used to abut against the manhole cover.

[0010] Preferably, one end of the connector is connected to the second lever arm, and the other end of the connector is provided with a curved portion, wherein the curved portion and the connecting hole of the manhole cover are detachably connected.

[0011] Preferably, a connecting portion is provided at the bottom of the end of the second lever arm away from the first lever arm, one end of the abutting member is rotatably connected to the connecting portion, and an abutting portion is provided at the end of the abutting member away from the connecting portion.

[0012] Preferably, the cross-sectional shape of the first lever arm and the second lever arm is I-shaped, and the ends of the first lever arm and the second lever arm that are close to each other are respectively provided with through holes. When the through holes of the first lever arm and the second lever arm overlap, the first lever arm and the second lever arm are detachably connected through the overlapping through holes by a positioning member.

[0013] Preferably, a mounting portion is provided at the bottom of the first lever arm near the end of the second lever arm, and the mounting portion is rotatably connected to the top of the base.

[0014] Preferably, the support mechanism includes: a fixed seat, the fixed seat being disposed at the bottom of the base, a rotating rod being disposed below the base, one end of the rotating rod being connected to the bottom center of the base, the other end of the base being rotatably passing through the center of the fixed seat and extending downward, and at least three first rotating parts being evenly disposed below the fixed seat with the rotating rod as the center, each of the first rotating parts being rotatably connected to a support rod;

[0015] A sliding cylinder is sleeved on the rotating rod, and a second rotating part is provided on the sliding cylinder near each of the support rods. A third rotating part is provided on each support rod facing the rotating rod.

[0016] A linkage rod is provided between the slide cylinder and each of the support rods, and the two ends of the linkage rod are rotatably connected to the second rotating part and the third rotating part, respectively.

[0017] The municipal manhole cover lifting device provided by this utility model has the following beneficial effects:

[0018] 1. This utility model uses a support mechanism to provide stable support for the base, so that it can be stably held on the working surface. The base and the support mechanism are rotatably connected, so that the first lever arm and the second lever arm connected to the base can rotate in the XY direction relative to the support mechanism. The base and the first lever arm are rotatably connected, so that the first lever arm can rotate in the XZ direction relative to the base. Thus, when the connecting part and the abutting part of the second lever arm are connected and abutted to the manhole cover respectively, the manhole cover can be opened and flipped to the side of the manhole by operating the second lever arm, thereby realizing the lifting and flipping of the manhole cover.

[0019] 2. This utility model also allows the bent part to hook onto one side of the inside of the manhole cover after it is inserted into the hole. The abutment is operated so that the abutment is perpendicular to the outside of the manhole cover. At this time, the connecting part and the abutment are relatively fixed to the position of the manhole cover, providing a stable gripping point and a balanced force distribution. At this time, the second lever arm is operated to adjust the XY and XZ directions, so that the manhole cover is flipped to the side of the manhole cover.

[0020] 3. This utility model also provides stable support during use through the first lever arm, the second lever arm, and the support mechanism. When not in use or during transportation, it can be well stored, making it easy for one person to move and operate, thus realizing the transportation of the manhole cover. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0022] Figure 2 This is a front view structural diagram of the present utility model;

[0023] Figure 3 This is a schematic diagram of the installation of the positioning component structure of this utility model.

[0024] The reference numerals in the attached figures are as follows:

[0025] 1. Base; 2. First lever arm; 3. Second lever arm; 4. Connector; 5. Abutment; 6. Bending part; 7. Connecting part; 8. Abutment; 9. Through hole; 10. Positioning part; 11. Mounting part; 12. Fixed seat; 13. Rotating rod; 14. First rotating part; 15. Slide cylinder; 16. Second rotating part; 17. Third rotating part; 18. Linkage rod. Detailed Implementation

[0026] like Figure 1-3 As shown, this utility model provides a municipal manhole cover lifting device, which includes:

[0027] A base 1 and a support mechanism are disposed below the base 1, and the base 1 and the support mechanism are rotatably connected; a first lever arm 2 is rotatably disposed above the base 1; a second lever arm 3 is slidably sleeved within the first lever arm 2, and a connecting member 4 and an abutting member 5 are provided at the end of the first lever arm 2 away from the second lever arm 3. The connecting member 4 and the manhole cover are detachably connected, and the abutting member 5 is used to abut against the manhole cover. Figure 1-3 As shown, a municipal manhole cover lifting device includes a support mechanism that provides stable support to a base 1, allowing it to be stably held on the working surface. The base 1 and the support mechanism are rotatably connected, allowing the first lever arm 2 and the second lever arm 3 connected to the base 1 to rotate relative to the support mechanism in the XY direction. The base 1 and the first lever arm 2 are rotatably connected, allowing the first lever arm 2 to rotate relative to the base 1 in the XZ direction. Thus, when the connecting piece 4 and the abutting piece 5 of the second lever arm 3 are connected and abutted to the manhole cover, the manhole cover can be opened and flipped to a position next to the manhole by operating the second lever arm 3, thereby lifting and flipping the manhole cover.

[0028] In some embodiments, one end of the connector 4 is connected to the second lever arm 3, and the other end of the connector 4 is provided with a bent portion 6, which is detachably connected to the connection hole of the manhole cover. For example... Figure 1-3 As shown, one end of the connector 4 is connected to the second lever arm 3, and the connection method can be bonding or welding. When in use, the bent part 6 of the other end of the connector 4 extends into the hole of the manhole cover. The hole of the manhole cover is generally located in the center or at the edge of the manhole cover. When the bent part 6 extends into the hole of the manhole cover, it hooks onto one side of the inside of the manhole cover. The abutment 5 is operated so that the abutment 8 is perpendicularly abutted against the outside of the manhole cover. At this time, the connector 4 and the abutment 5 are relatively fixed to the position of the manhole cover, providing a stable gripping point and a balanced force distribution. At this time, the second lever arm 3 is operated to adjust in the XY and XZ directions, so that the manhole cover is flipped to the side of the manhole cover.

[0029] In some embodiments, a connecting portion 7 is provided at the bottom of the end of the second lever arm 3 away from the first lever arm 2, one end of the abutting member 5 is rotatably connected to the connecting portion 7, and an abutting portion 8 is provided at the end of the abutting member 5 away from the connecting portion 7. For example... Figure 1-3 As shown, the connection between the connecting part 7 of the first lever arm 2 and the second lever arm 3 can be connected by bonding or welding. The rotational connection between the abutting part 5 and the connecting part 7 can be achieved by a rotating shaft. The abutting part 8 is used to abut against the side of the manhole cover and is provided with a rubber pad, which can increase the friction effect after contact with the manhole cover.

[0030] In some embodiments, the cross-sectional shape of the first lever arm 2 and the second lever arm 3 is I-shaped. A through hole 9 is provided at one end of the first lever arm 2 and the second lever arm 3 that is close to each other. When the through holes 9 of the first lever arm 2 and the second lever arm 3 overlap, the first lever arm 2 and the second lever arm 3 are detachably connected through the overlapping through holes 9 by a positioning member 10. For example... Figure 1-3 As shown, the cross-sections of the first lever arm 2 and the second lever arm 3 are both I-shaped. The second lever arm 3 is fitted inside the first lever arm 2. This connection not only increases the connection effect, but also makes the I-shaped structure more stable and robust during use. During use, the through holes 9 at the ends of the first lever arm 2 and the second lever arm 3 that are close to each other are connected by a positioning member 10 through the overlapping through holes 9. The positioning member 10 forms a connection between the first lever arm 2 and the second lever arm 3. The positioning member 10 can be in the form of a bolt or nut, so that the first lever arm 2 and the second lever arm 3 are stably connected during use to maintain the connection effect and facilitate the lifting of the manhole cover.

[0031] In some embodiments, a mounting portion 11 is provided at the bottom of the first lever arm 2 near one end of the second lever arm 3, and the mounting portion 11 is rotatably connected to the top of the base 1. For example... Figure 1-3As shown, the connection between the first lever arm 2 and the mounting part 11 can be by welding or bolting. The top rotatable connection between the mounting part 11 and the base 1 can be a rotating shaft connection to achieve adjustment of the first lever arm 2 and the base 1 in the XZ direction.

[0032] In some embodiments, the support mechanism includes: a fixed base 12 disposed at the bottom of the base 1; a rotating rod 13 disposed below the base 1; one end of the rotating rod 13 connected to the center of the bottom of the base 1; the other end of the base 1 rotatably passing through the center of the fixed base 12 and extending downward; at least three first rotating parts 14 evenly disposed below the fixed base 12 with the rotating rod 13 as the center; each first rotating part 14 rotatably connected to a support rod; a sliding cylinder 15 sleeved on the rotating rod 13; a second rotating part 16 disposed near each support rod on the sliding cylinder 15; and a third rotating part 17 disposed towards the rotating rod 13 on each support rod; a linkage rod 18 disposed between the sliding cylinder 15 and each support rod; the two ends of the linkage rod 18 being rotatably connected to the second rotating part 16 and the third rotating part 17, respectively. Figure 1-3 As shown, the fixed seat 12 is located at the bottom of the base 1. The rotating rod 13 of the base 1 is rotatably connected to the fixed seat 12. Limiting rings are set at two points on the rotating rod 13 above and below the fixed seat 12. The limiting rings abut against the upper and lower ends of the fixed seat 12 respectively. The structure formed by the two limiting rings and the rotating rod 13 is rotatably connected to the fixed seat 12 to maintain support for the first lever arm 2 during use. This allows the first lever arm 2 to be adjusted in the XY direction relative to the wellhead position. Three support rods support the fixed seat 12. The three support rods are connected to the rotating rod 13 through the linkage rod 18. When the three support rods are opened and moved outward, the slide cylinder 15 slides relative to the rotating rod 13 under the action of the linkage rod. After sliding to a suitable position, the rotating rod 13, the linkage rod, and the support rods form a triangular support, which acts to stabilize the fixed seat 12. When not in use, the support rods can be stored together for easy handling by operators.

[0033] The first lever arm 2, the second lever arm 3, and the support mechanism in this application can provide stable support when in use, and can be well stored when not in use or during transportation, making it easy for one person to move and carry out the operation, thus realizing the transportation of the manhole cover.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A municipal manhole cover lifting device characterized by, include: Base A support mechanism is disposed below the base, and the base and the support mechanism are rotatably connected; The first lever arm is rotatably positioned above the base; The second lever arm is slidably fitted inside the first lever arm. The end of the first lever arm away from the second lever arm is provided with a connector and an abutment. The connector and the manhole cover are detachably connected, and the abutment is used to abut against the manhole cover. One end of the connector is connected to the second lever arm, and the other end of the connector is provided with a bent part, which is detachably connected to the connection hole of the manhole cover. The bottom of the second lever arm away from the first lever arm is provided with a connecting part, one end of the abutting member is rotatably connected to the connecting part, and the end of the abutting member away from the connecting part is provided with an abutting part; The cross-sectional shape of the first lever arm and the second lever arm is I-shaped. The ends of the first lever arm and the second lever arm that are close to each other are respectively provided with through holes. When the through holes of the first lever arm and the second lever arm overlap, the first lever arm and the second lever arm can be detachably connected through the overlapping through holes by a positioning member.

2. The municipal manhole cover lifting device according to claim 1, characterized in that: The bottom of the first lever arm near the second lever arm is provided with a mounting part, and the mounting part is rotatably connected to the top of the base.

3. The municipal manhole cover lifting device according to claim 1, characterized in that: The support mechanism includes: a fixed seat, which is disposed at the bottom of the base, and a rotating rod is disposed below the base. One end of the rotating rod is connected to the center of the bottom of the base, and the other end of the base rotatably passes through the center of the fixed seat and extends downward. At least three first rotating parts are evenly disposed below the fixed seat with the rotating rod as the center, and a support rod is rotatably connected in each of the first rotating parts. A sliding cylinder is sleeved on the rotating rod, and a second rotating part is provided on the sliding cylinder near each of the support rods. A third rotating part is provided on each support rod facing the rotating rod. A linkage rod is provided between the slide cylinder and each of the support rods, and the two ends of the linkage rod are rotatably connected to the second rotating part and the third rotating part, respectively.

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