Inspection well cover fixing device and well cover

Abstract

The utility model discloses an inspection well lid fixing device which comprises a threaded lifting rod, a threaded sleeve, a limiting rod, a fixing rod and a handle, the upper end of the threaded lifting rod is connected with the handle, the lower end of the threaded lifting rod can penetrate through an air hole or a hoisting hole in a well lid and extend to the position below the well lid, and the threaded lifting rod is in threaded connection with the threaded sleeve. The side wall of the threaded sleeve is connected with a limiting rod and a fixing rod, the limiting rod and the fixing rod are not located on the same vertical face, the fixing rod is located below the limiting rod, the end of the limiting rod is used for abutting against the inner side wall of the walling crib, and the upper end of the fixing rod is used for extruding the lower end face of the walling crib. According to the inspection well cover fixing device, due to the arrangement of the limiting rods and the fixing rods, the position between the inspection well cover fixing device and a well ring can be conveniently and rapidly positioned; and through the arrangement of a handle, lifting and rotation of structures such as the threaded lifting rod can be conveniently and rapidly carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover fixing, and in particular to a manhole cover fixing device and a manhole cover. Background Technology

[0002] Most of the existing manhole cover structures include a manhole cover and a manhole ring, and the manhole cover is often provided with ventilation holes or lifting holes. Among them, when the manhole cover is in use, the manhole cover is mostly installed directly on the manhole ring. There are a large number of manhole covers on the roads in the nuclear power plant area. When vehicles pass by the manhole covers, it is easy to cause the manhole covers to lift up, posing certain safety hazards. In order to reduce the risk of manhole covers lifting up, a common practice is to groove the ground, remove the concrete, remove the original manhole cover, replace the heavy manhole cover, pour concrete, and perform maintenance to reduce the possibility of the manhole cover lifting up by the dead weight of the heavy manhole cover; however, the workload of replacing the manhole cover is large, the maintenance period of the newly poured concrete is long, and the vehicle and personnel guidance work needs to be done during this period, which is extremely inconvenient to implement.

[0003] Therefore, there is an urgent need for a manhole cover fixing device and a manhole cover to solve the problem of relative fixation between the manhole cover and the manhole ring. Contents of utility model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a manhole cover fixing device and a manhole cover to solve the problem of relative fixation between the manhole cover and the manhole ring.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A manhole cover fixing device, characterized in that it includes a threaded lifting rod, a threaded sleeve, a limiting rod, a fixing rod and a handle, the upper end of the threaded lifting rod is connected to the handle, the lower end of the threaded lifting rod can pass through the air vent or lifting hole on the manhole cover and extend to the bottom of the manhole cover, the threaded lifting rod is threadedly connected to the threaded sleeve, the side wall of the threaded sleeve is respectively connected to the limiting rod and the fixing rod, the limiting rod and the fixing rod are not in the same vertical plane, the fixing rod is located below the limiting rod, the end of the limiting rod is used to abut against the inner wall of the manhole ring, and the upper end of the fixing rod is used to squeeze the lower end surface of the manhole ring.

[0007] In order to optimize the above technical solutions, the specific measures taken also include:

[0008] Furthermore, it also includes a spring and an anti-drop pin. A slot is provided at the lower end of the threaded lifting rod. The spring is sleeved on the threaded lifting rod. The anti-drop pin is inserted and fixed in the slot. The upper end of the spring abuts against the lower end of the threaded sleeve. The lower end of the spring abuts against the anti-drop pin. The spring keeps squeezing the threaded sleeve.

[0009] Furthermore, a washer is provided at the lower end of the threaded sleeve, and the upper end of the spring abuts against the lower end of the washer of the threaded sleeve.

[0010] Furthermore, the handle includes a base, a connecting ring and a plurality of connecting strips, the base is connected with a plurality of connecting strips in a divergent manner around the base, and a ring-shaped connecting ring with an inner diameter larger than the base is connected through the connecting strips.

[0011] Furthermore, the horizontal height of the connecting ring is lower than that of the base.

[0012] Furthermore, the connecting strip is in an arc-shaped structure with its opening downward.

[0013] Furthermore, the lower end surface of the connecting ring is provided with friction lines.

[0014] Furthermore, a manhole cover is characterized in that: an opening is provided on the manhole cover, and the manhole cover fixing device according to any one of the above claims is installed in the opening.

[0015] Furthermore, a mounting groove is provided at the upper end of the manhole cover, the opening is provided at the center of the mounting groove, the threaded lifting rod of the manhole cover fixing device is inserted into the opening, and the handle of the manhole cover fixing device can be placed in the mounting groove.

[0016] Furthermore, the maximum height of the handle in the mounting groove is not higher than the depth of the mounting groove.

[0017] The beneficial effects of the utility model are:

[0018] The utility model is provided with a threaded lifting rod, a threaded sleeve, a limiting rod, a fixing rod and a handle. When in use, the manhole cover fixing device inserted into the air vent or the lifting hole of the manhole cover is lifted as a whole by the handle until the limiting rod or the fixing rod abuts against the manhole ring, and the handle is rotated while lifting until the fixing rod is squeezed and abuts against the lower end surface of the manhole ring, and the end of the limiting rod abuts against the inner wall of the manhole ring; the handle is continued to be rotated, and the threaded sleeve does not rotate due to the limiting action of the limiting rod and the fixing rod, and the threaded lifting rod rotates under the action of the handle to reduce the distance between the handle and the threaded sleeve until the handle is close to the upper end of the manhole cover. At this time, the manhole cover and the manhole ring can be relatively fixed conveniently and effectively through the manhole cover fixing device; when the manhole cover and the manhole ring need to be separated, the handle is reversed to loosen the connection. The utility model can conveniently locate the position between the manhole cover fixing device and the manhole ring through the setting of the limiting rod and the fixing rod; and can conveniently lift and rotate the threaded lifting rod and other structures through the setting of the handle.

[0019] The device of the utility model is simple to process, convenient to install and disassemble, quickly fixed, and easy to operate. The materials of the main components can be selected as stainless steel, which is corrosion-resistant and has sufficient strength to meet the use requirements, being firm, durable and with low manufacturing cost. It can effectively solve the problem that the existing manhole covers are prone to tilt, improve the on-site safety, reduce safety accidents caused by the tilting of manhole covers, and also reduce the maintenance cost of manhole covers. The utility model can quickly complete the fixing work of manhole covers, save time and reduce the falling risk caused by the side turning of manhole covers. The device of the utility model has a wide range of applications and can be applied to the fixing of manhole covers in various environments such as roads and squares. It is an invention for fixing manhole covers, belonging to the technical field of building or road construction, and can be popularized to various building or road construction projects. The device of the utility model is a longitudinal fixing device for manhole covers, used for the longitudinal fixing of manhole covers. The construction operation is convenient, it can effectively solve the problem that the existing manhole covers are prone to tilt, improve the on-site safety, reduce safety accidents caused by the tilting of manhole covers, and also reduce the maintenance cost of manhole covers. It has the function of fixing manhole covers, can fix the manhole covers without removing the original ones, reduce the labor intensity and enable quick construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a manhole cover fixing device proposed by the utility model;

[0021] Figure 2 FIG. is a sectional view of the use structure of a manhole cover fixing device, a manhole cover and a manhole ring proposed by the utility model;

[0022] Figure 3 FIG. is a schematic upper structural diagram of a manhole cover fixing device before fixing proposed by the utility model;

[0023] Figure 4 FIG. is a schematic lower structural diagram of a manhole cover fixing device before fixing proposed by the utility model;

[0024] Figure 5 FIG. is a schematic upper structural diagram of a manhole cover fixing device after fixing proposed by the utility model;

[0025] Figure 6 FIG. is a schematic lower structural diagram of a manhole cover fixing device after fixing proposed by the utility model.

[0026] Reference numerals: 1, handle; 2, limit gasket; 3, threaded lifting rod; 4, threaded sleeve; 5, limit rod; 6, fixing rod; 7, spring; 8, anti-detachment pin shaft; 9, manhole cover; 10, manhole ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The utility model will be described in detail below with reference to the drawings.

[0028] As shown in the appendix Figure 1 As shown in the figure, a manhole cover fixing device according to an embodiment of the present invention includes a threaded lifting rod 3, a threaded sleeve 4, a limiting rod 5, a fixing rod 6 and a handle 1. The upper end of the threaded lifting rod 3 is connected to the handle 1. The lower end of the threaded lifting rod 3 can pass through the ventilation hole or the lifting hole on the manhole cover 9 and extend below the manhole cover. The threaded lifting rod 3 is threadedly connected with the threaded sleeve 4. The side walls of the threaded sleeve 4 are respectively connected with the limiting rod 5 and the fixing rod 6. The limiting rod 5 and the fixing rod 6 are not in the same vertical plane. The fixing rod 6 is located below the limiting rod 5. The end of the limiting rod 5 is used to abut against the inner side wall of the well ring 10, and the upper end of the fixing rod 6 is used to press against the lower end surface of the well ring 10.

[0029] As shown in the appendix Figure 3 to the appendix Figure 6 As shown in the figure, through the cooperative setting of the threaded lifting rod 3, the threaded sleeve 4, the limiting rod 5, the fixing rod 6 and the handle 1, when in use, the whole manhole cover fixing device inserted into the ventilation hole or the lifting hole of the manhole cover 9 is lifted through the handle 1 until the limiting rod 5 or the fixing rod 6 abuts against the well ring 10. While lifting through the handle 1, it is rotated until the fixing rod 6 presses against the lower end surface of the well ring 10, and the end of the limiting rod 5 abuts against the inner side wall of the well ring 10; continue to rotate the handle 1, the threaded sleeve 4 does not rotate under the limiting action of the limiting rod 5 and the fixing rod 6, and the threaded lifting rod 3 rotates under the action of the handle 1 and the distance between the handle 1 and the threaded sleeve 4 is reduced until the handle 1 is close to the upper end of the manhole cover 9. At this time, the manhole cover 9 and the well ring 10 can be relatively fixed conveniently and effectively through the manhole cover fixing device; when it is necessary to separate the manhole cover 9 and the well ring 10, reverse the handle 1 to loosen the connection. Through the setting of the limiting rod 5 and the fixing rod 6, the position positioning between the manhole cover fixing device and the well ring 10 can be conveniently carried out; through the setting of the handle 1, the lifting and rotation of the threaded lifting rod 3 and other structures can be conveniently carried out.

[0030] The device of the present invention can be directly assembled and used without removing the original manhole cover, that is, the threaded lifting rod 3 equipped with the handle 1 is inserted into the corresponding manhole cover hole, and then the threaded sleeve 4 provided with the limiting rod 5 and the fixing rod 6 is screwed in, and then it can be used; when disassembling and assembling the manhole cover 9, rotate the device to the side where the limiting rod 5 and the fixing rod 6 are away from the inner wall of the well ring 10, which does not affect the installation and disassembly of the manhole cover 9.

[0031] In another specific embodiment, a spring 7 and an anti-detachment pin 8 are further included. A slot is provided at the lower end of the threaded lifting rod 3. The spring 7 is sleeved on the threaded lifting rod 3. The anti-detachment pin 8 is inserted and fixed in the slot. The upper end of the spring 7 abuts against the lower end of the threaded sleeve 4, and the lower end of the spring 7 abuts against the anti-detachment pin 8. The spring 7 keeps pressing on the threaded sleeve 4. In this way, during use, the disassembly and assembly of structures such as the threaded lifting rod 3, the threaded sleeve 4, the spring 7, and the anti-detachment pin 8 can be carried out conveniently and reliably. At the same time, the spring 7 limits the position of the threaded sleeve 4 from below to prevent the loosening of the device limit caused by vibration or other situations.

[0032] Wherein, a gasket is provided at the lower end of the threaded sleeve 4. The upper end of the spring 7 abuts against the lower end of the gasket of the threaded sleeve 4. In this way, the stability of the spring 7 pressing and limiting the position can be increased.

[0033] In another specific embodiment, the handle 1 includes a base, a connecting ring, and several connecting bars. Several connecting bars are divergently connected around the base and connected to a connecting ring that is annular and has an inner diameter larger than the base through the connecting bars. Among them, the horizontal height of the connecting ring is lower than that of the base. In this way, during use, the friction force of the device can be increased through the contact surface between the connecting ring and the manhole cover 9, so as to further ensure the stability of the connection between the manhole cover 9 and the manhole ring 10.

[0034] Wherein, the connecting bar for connecting the base and the connecting ring is in an arc structure with the opening facing downwards. In this way, through the structural setting of the connecting bar, it is more convenient to lift and rotate the device. When the handle 1 contacts the manhole cover 9, the connecting bar with this arc structure can be used to further effectively apply force to tighten or loosen the handle 1.

[0035] Wherein, the lower end surface of the connecting ring is provided with friction lines. In this way, the friction force is increased. In this embodiment, a limiting gasket 2 can be provided around the lower end of the base. The bottom end of the limiting gasket 2 is at the same level as the bottom end of the connecting ring. In this way, through the limiting gasket 2, the friction force between the device and the manhole cover 9 after the manhole cover 9 and the manhole ring 10 are limited and fixed can be further increased.

[0036] As shown in the attached Figure 2 figure, in another specific embodiment, a manhole cover is provided with an opening, and the above-mentioned manhole cover fixing device is installed in the opening. In this embodiment, the opening can be made by drilling holes by itself.

[0037] The upper end of the manhole cover 9 is provided with a mounting groove, the opening is provided at the center of the mounting groove, the threaded lifting rod 3 of the manhole cover fixing device is inserted into the opening, and the handle 1 of the manhole cover fixing device can be placed in the mounting groove. The highest height of the handle 1 in the mounting groove is not higher than the depth of the mounting groove. In this way, when the handle 1 is tightened to be located in the mounting groove during use, the handle 1 is stored in the mounting groove and will not affect the passing vehicles.

[0038] The device of the utility model is simple to process, convenient to install and disassemble, quickly fix, and easy to operate. The material of the main components can be made of stainless steel. The corrosion resistance and strength meet the use requirements. It is solid, durable and has a low production cost. It can effectively solve the problem of the existing manhole cover being easy to lift up, improve the safety of the site, reduce the safety accidents caused by the lifting of the manhole cover, and can also reduce the maintenance cost of the manhole cover. The utility model can quickly complete the work of fixing the manhole cover, save time, and reduce the risk of falling caused by the manhole cover tipping over. The device of the utility model has a wide range of uses and can be applied to the fixing of manhole covers in various environments such as roads and squares. It is a creation for fixing manhole covers and belongs to the field of building or road construction technology. It can be extended to various buildings or road construction. The utility model device is a manhole cover longitudinal fixing device, which is used for longitudinal fixing of manhole covers. The construction operation is convenient, and it can effectively solve the problem that the existing manhole covers are easy to lift up, improve the safety of the site, reduce the safety accidents caused by the lifting of the manhole covers, and can also reduce the maintenance cost of the manhole covers. It has the function of fixing the manhole covers, and can be used without removing the original manhole covers, reducing labor intensity and fast construction.

[0039] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "back", etc. used in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the utility model. The change or adjustment of their relative relationship shall also be regarded as the scope of implementation of the utility model without substantial change of technical content.

[0040] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A manhole cover fixing device, characterized in that: The utility model comprises a threaded lifting rod (3), a threaded sleeve (4), a limiting rod (5), a fixing rod (6) and a handle (1), wherein the upper end of the threaded lifting rod (3) is connected to the handle (1), the lower end of the threaded lifting rod (3) can pass through the air vent hole or the lifting hole on the manhole cover (9) and extend to the bottom of the manhole cover, the threaded lifting rod (3) is threadedly connected to the threaded sleeve (4), the side wall of the threaded sleeve (4) is respectively connected to the limiting rod (5) and the fixing rod (6), the limiting rod (5) and the fixing rod (6) are not in the same vertical plane, the fixing rod (6) is located below the limiting rod (5), the end of the limiting rod (5) is used to abut against the inner wall of the manhole ring (10), and the upper end of the fixing rod (6) is used to press against the lower end surface of the manhole ring (10).

2. A manhole cover fixing device according to claim 1, characterized in that: It also includes a spring (7) and an anti-drop pin (8), wherein a slot is provided at the lower end of the threaded lifting rod (3), the spring (7) is sleeved on the threaded lifting rod (3), the anti-drop pin (8) is inserted and fixed in the slot, the upper end of the spring (7) abuts against the lower end of the threaded sleeve (4), the lower end of the spring (7) abuts against the anti-drop pin (8), and the spring (7) maintains the compression of the threaded sleeve (4).

3. A manhole cover fixing device according to claim 2, characterized in that: A circle of gasket is provided at the lower end of the threaded sleeve (4), and the upper end of the spring (7) abuts against the lower end of the gasket of the threaded sleeve (4).

4. A manhole cover fixing device according to claim 1, characterized in that: The handle (1) comprises a base, a connecting ring and a plurality of connecting strips, wherein the base is connected to a plurality of connecting strips in a divergent manner around the base, and an annular connecting ring having an inner diameter larger than the base is connected via the connecting strips.

5. A manhole cover fixing device according to claim 4, characterized in that: The connecting ring is at a level lower than the base.

6. A manhole cover fixing device according to claim 4, characterized in that: The connecting strip is in an arc-shaped structure with an opening downward.

7. A manhole cover fixing device according to claim 4, characterized in that: The lower end surface of the connecting ring is provided with friction lines.

8. A manhole cover, characterized in that: An opening is provided on the manhole cover (9), and the manhole cover fixing device according to any one of claims 1 to 7 is installed in the opening.

9. A manhole cover according to claim 8, characterized in that: The upper end of the manhole cover (9) is provided with a mounting groove, the opening is provided at the center of the mounting groove, the threaded lifting rod (3) of the manhole cover fixing device is inserted into the opening, and the handle (1) of the manhole cover fixing device can be placed in the mounting groove.

10. A manhole cover according to claim 9, characterized in that: The maximum height of the handle (1) in the mounting groove is no higher than the depth of the mounting groove.

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