Assistance type quick-opening manhole device
By introducing a power-assisted articulation assembly and a power-assisted part into the manhole device, the problems of large strength and difficult to control when opening and closing of the manhole device in the prior art are solved, and the effect of saving labor-saving opening and closing and improving equipment safety is achieved.
Patent Information
- Application Number
- CN202420771992.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-12
AI Technical Summary
The existing manhole devices require a lot of effort when opening and closing, and the opening and closing angle is difficult to control, which can easily lead to equipment deformation and lax sealing.
A power-assisted quick-opening manhole device is designed, using a power-assisted articulation assembly to connect the fixing ring and the manhole cover. The power-assisted part provides power to define the opening and closing angle of the manhole cover to ensure the force and angle control during opening and closing.
The labor-saving opening and closing of manhole covers is achieved, and the strength needs are reduced during opening and closing are avoided. The equipment is deformed and sealed, and the safety and reliability of the equipment are improved.
Smart Images
Figure CN222630150U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical equipment, and more specifically to a power-assisted quick-opening manhole device. Background Art
[0002] The manhole device is a hole for maintenance personnel to enter the container during the maintenance or inspection of chemical equipment and boilers. It is used to install, disassemble, clean and repair the internal devices of the equipment. When the diameter of the equipment exceeds 900mm, a manhole should be opened. It usually includes: a fixing ring, a hinge and a manhole cover. The fixing ring is welded and fixed on the equipment. A sealing layer is set between the manhole cover and the fixing ring. Finally, the manhole cover and the fixing ring are tightly fixed with bolts.
[0003] However, the manhole device in the prior art fixes the fixing ring and the manhole cover by a hinge, which has the following defects:
[0004] 1. Since the bolts tightly press the manhole cover and the fixing ring, the sealing ring deforms and the manhole cover fits tightly on the fixing ring. Therefore, when the manhole cover needs to be opened for inspection, workers need to exert a lot of strength to open it, and sometimes even need to use mechanical equipment;
[0005] 2. When using equipment to pull the manhole cover, due to poor control, the opening and closing angle of the manhole cover is easy to be too large, which will cause deformation between the equipment and the fixing ring and lead to poor sealing. If the inner wall is enameled, it will be deformed and broken due to excessive pulling force, making the equipment scrapped. Utility Model Content
[0006] In order to solve the above problems, the purpose of the utility model is to provide a power-assisted quick-opening manhole device which has a reliable structure, is easy to install, provides assistance during opening and closing, and is convenient for maintenance and saves more effort.
[0007] According to one aspect of the utility model, a power-assisted quick-opening manhole device is provided, comprising: a fixing ring, a manhole cover and a power-assisted hinge assembly, wherein the fixing ring is connected to the manhole cover through the power-assisted hinge assembly and drives the manhole cover close to or away from the fixing ring, and the power-assisted hinge assembly limits the opening and closing angle of the manhole cover, and the power-assisted hinge assembly comprises: a mounting portion, a power-assisted portion and a hinge portion, a hinge portion is arranged in the middle of the mounting portion, the power-assisted portion is arranged on the hinge portion, one end of the mounting portion is connected to the fixing ring, and the other end of the mounting portion is connected to the manhole cover, and the power-assisted portion connects the fixing ring and the manhole cover and drives the manhole cover away from the fixing ring. The fixing ring and the manhole cover are connected by the mounting portion, the opening and closing of the manhole cover is facilitated by the hinge, and the labor-saving opening and closing of the manhole cover is facilitated by the power-assisted portion.
[0008] In some embodiments, the mounting portion includes: a first fixing block, a second fixing block, and a third fixing block, the hinge portion passes through the first fixing block, one end of the hinge portion is mounted with the second fixing block, the other end of the hinge portion is mounted with the third fixing block, the first fixing block is fixedly connected to the fixing ring, and the second fixing block and the third fixing block are directly or indirectly fixedly connected to the manhole cover. The opening and closing of the manhole cover is achieved by the cooperation of the first fixing block, the second fixing block, and the third fixing block with the hinge portion.
[0009] In some embodiments, the first fixing block includes: a first support, a second support and a connecting plate, the first support and the second support are symmetrically fixed at both ends of the connecting plate, the first support is provided with a first mounting hole, the top of the first support has a first limiting surface, the second support is provided with a second mounting hole, the top of the second support has a second limiting surface, the first mounting hole and the second mounting hole are symmetrically arranged, and the hinge is inserted into the first mounting hole and the second mounting hole. The first support and the second support facilitate the installation of the hinge, and the connecting plate facilitates the support of the hinge to enhance the overall structural strength.
[0010] In some embodiments, a first limit block is provided on a side of the second fixed block away from the third fixed block, and the end of the first limit block abuts against the first limit surface to limit the opening and closing angle of the manhole cover, and a second limit block is provided on a side of the third fixed block away from the second fixed block, and the end of the second limit block abuts against the second limit surface to limit the opening and closing angle of the manhole cover. The first limit surface abuts against the first limit block and the second limit surface abuts against the second limit block to ensure the opening and closing angle of the manhole cover and prevent the weight or excessive tension of the manhole cover from causing deformation of the device.
[0011] In some embodiments, the hinged portion includes: a connecting frame and a rotating shaft, the connecting frame is provided with a third mounting hole, the connecting frame is sleeved in the middle of the rotating shaft through the third mounting hole, the connecting frame is fixed to the connecting plate, one end of the rotating shaft is provided in the first mounting hole, and the other end of the rotating shaft is provided in the second mounting hole. The connecting frame provides support for the middle of the rotating shaft.
[0012] In some embodiments, the assisting part includes: a first clip spring and a second clip spring, the first clip spring sleeve is disposed on the rotating shaft and is limited between the connecting frame and the second fixing block, one end of the first clip spring abuts against the connecting frame and the other end abuts against the second fixing block, the second clip spring sleeve is disposed on the rotating shaft and is limited between the connecting frame and the third fixing block, one end of the second clip spring abuts against the connecting frame and the other end abuts against the third fixing block. The first clip spring and the second clip spring provide assisting force for opening the manhole cover after compression, making the opening of the manhole cover more labor-saving.
[0013] In some embodiments, the fixing ring is provided with a plurality of fixing holes, and the fixing holes and bolts are used to facilitate the manhole cover to be tightly fixed to the fixing ring.
[0014] In some embodiments, a handle is provided on the manhole cover, and an observation port is provided in the center of the manhole cover. The handle is used to open the manhole cover for maintenance, and the observation port is used to observe the internal state of the device during normal use.
[0015] Compared with the prior art, the utility model has the beneficial effects of reliable structure, convenient installation, power assistance during opening and closing, convenient maintenance and more labor-saving; the utility model connects the fixing ring and the manhole cover through the installation part, facilitates the opening and closing of the manhole cover through the hinge, and facilitates the labor-saving opening and closing of the manhole cover through the power-assist part; the opening and closing of the manhole cover is achieved through the cooperation of the first fixing block, the second fixing block and the third fixing block with the hinge part; the installation of the hinge part is facilitated by the first support and the second support, and the support for the hinge part is convenient to provide support to enhance the overall structural strength through the connecting plate ; The first limiting surface is used to press against the first limiting block and the second limiting surface is used to press against the second limiting block to ensure the opening and closing angle of the manhole cover and prevent the weight of the manhole cover or excessive pulling force from causing deformation of the equipment; the connecting frame is used to provide support for the middle of the rotating shaft; the first retaining spring and the second retaining spring are used to provide assistance for the opening of the manhole cover after compression, making the opening of the manhole cover more labor-saving; the fixing holes and bolts are used to facilitate the tight fixation of the manhole cover and the fixing ring; the handle is used to facilitate the opening of the manhole cover during maintenance, and the observation port is used to facilitate the observation of the internal state of the equipment during normal use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model power-assisted quick-opening manhole device;
[0017] Figure 2 It is a structural schematic diagram of the installation part, the assisting part and the hinged part of the power-assisted quick-opening manhole device of the utility model;
[0018] Figure 3 This is a schematic diagram of the closed state of the power-assisted quick-opening manhole device of the utility model;
[0019] Figure 4 The utility model is a schematic diagram of a manhole cover of a power-assisted quick-opening manhole device in a fully opened state. DETAILED DESCRIPTION
[0020] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.
[0021] In the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms
[0022] "Installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meaning of the terms can be understood according to the specific circumstances.
[0023] like Figure 1 As shown, the power-assisted quick-opening manhole device described in the utility model comprises: a fixing ring 1, a manhole cover 2 and a power-assisted hinge assembly 3. The fixing ring 1 is connected to the manhole cover 2 through the power-assisted hinge assembly 3 and drives the manhole cover 2 to approach or move away from the fixing ring 1. The power-assisted hinge assembly 3 limits the opening and closing angle of the manhole cover 2. The power-assisted hinge assembly 3 comprises: a mounting portion 4, a power-assisted portion 5 and a hinge portion 6. The hinge portion 6 is arranged in the middle of the mounting portion 4. The power-assisted portion 5 is arranged on the hinge portion 6. One end of the mounting portion 4 is connected to the fixing ring 1, and the other end of the mounting portion 4 is connected to the manhole cover 2. The power-assisted portion 5 connects the fixing ring 1 and the manhole cover 2 and drives the manhole cover 2 away from the fixing ring 1. The fixing ring 1 and the manhole cover 2 are connected by the mounting portion 4, and the opening and closing of the manhole cover 2 is facilitated by the hinge, and the labor-saving opening and closing of the manhole cover 2 is facilitated by the power-assisted portion 5.
[0024] A plurality of fixing holes 11 are provided on the fixing ring 1. The fixing holes 11 and bolts are used to facilitate the manhole cover 2 to be tightly fixed to the fixing ring 1.
[0025] A handle 21 is provided on the manhole cover 2, and an observation port 22 is provided at the center of the manhole cover 2. The handle 21 is used to open the manhole cover 2 for maintenance, and the observation port 22 is used to observe the internal state of the equipment during normal use.
[0026] like Figure 2 As shown, the mounting portion 4 includes: a first fixing block 41, a second fixing block 42 and a third fixing block 43, the hinge portion 6 passes through the first fixing block 41, the second fixing block 42 is installed at one end of the hinge portion 6, and the third fixing block 43 is installed at the other end of the hinge portion 6, the first fixing block 41 is fixedly connected to the fixing ring 1, and the second fixing block 42 and the third fixing block 43 are directly or indirectly fixedly connected to the manhole cover 2. The opening and closing of the manhole cover 2 is achieved by the cooperation of the first fixing block 41, the second fixing block 42 and the third fixing block 43 with the hinge portion 6.
[0027] The first fixing block 41 includes: a first support 44, a second support 45 and a connecting plate 46. The first support 44 and the second support 45 are symmetrically fixed at both ends of the connecting plate 46. The first support 44 is provided with a first mounting hole 47, and the top of the first support 44 has a first limiting surface 48. The second support 45 is provided with a second mounting hole 49, and the top of the second support 45 has a second limiting surface 410. The first mounting hole 47 and the second mounting hole 49 are symmetrically arranged, and the hinge 6 is inserted into the first mounting hole 47 and the second mounting hole 49. The first support 44 and the second support 45 facilitate the installation of the hinge 6, and the connecting plate 46 facilitates the support of the hinge 6 to enhance the overall structural strength.
[0028] A first limiting block 421 is provided on a side of the second fixing block 42 away from the third fixing block 43, and the end of the first limiting block 421 abuts against the first limiting surface 48 to limit the opening and closing angle of the manhole cover 2. A second limiting block 431 is provided on a side of the third fixing block 43 away from the second fixing block 42, and the end of the second limiting block 431 abuts against the second limiting surface 410 to limit the opening and closing angle of the manhole cover 2. The first limiting surface 48 abuts against the first limiting block 421 and the second limiting surface 410 abuts against the second limiting block 431 to ensure the opening and closing angle of the manhole cover 2 and prevent the weight or excessive tension of the manhole cover 2 from causing deformation of the equipment.
[0029] Since it needs to be used on equipment with a height of more than 900 mm, the manhole cover 2 is relatively heavy, and it is laborious to pull it. Therefore, the opening angle after pulling is difficult to control, which may cause deformation of the fixing ring 1 and the equipment.
[0030] The opening angle of the manhole cover 2 is adjusted by setting the shapes of the first limiting surface 48 and the first limiting block 421 and the shapes of the second limiting surface 410 and the second limiting block 431 .
[0031] The hinge part 6 includes: a connecting frame 61 and a rotating shaft 62. The connecting frame 61 is provided with a third mounting hole 63. The connecting frame 61 is sleeved in the middle of the rotating shaft 62 through the third mounting hole 63. The connecting frame 61 is fixed to the connecting plate 46. One end of the rotating shaft 62 is arranged in the first mounting hole 47, and the other end of the rotating shaft 62 is arranged in the second mounting hole 49. The connecting frame 61 provides support for the middle of the rotating shaft 62.
[0032] The power assisting part 5 includes: a first clip 51 and a second clip 52. The first clip 51 is sleeved on the rotating shaft 62 and is limited between the connecting frame 61 and the second fixing block 42. One end of the first clip 51 abuts against the connecting frame 61 and the other end abuts against the second fixing block 42. The second clip 52 is sleeved on the rotating shaft 62 and is limited between the connecting frame 61 and the third fixing block 43. One end of the second clip 52 abuts against the connecting frame 61 and the other end abuts against the third fixing block 43. The first clip 51 and the second clip 52 provide power assist for opening the manhole cover 2 after compression, so that the opening of the manhole cover 2 is more labor-saving.
[0033] In the specific implementation process, the first limit block 421 is fixed to the outside of the second fixing block 42 by bolts, and the bolts extend out of the inside of the second fixing block 42 to limit the position of one end of the first clamping spring 51; similarly, the second limit block 431 is fixed to the outside of the third fixing block 43 by bolts, and the bolts extend out of the inside of the third fixing block 43 to limit the position of one end of the second clamping spring 52. Such a setting does not require additional setting of the fixing position of the clamping spring, and kills two birds with one stone.
[0034] like Figure 3 As shown, the fixing ring 1 and the manhole cover 2 are in a closed state; Figure 4 As shown, the manhole cover 2 is in a fully open state. Since the first limiting surface 48 abuts against the first limiting block 421 and the second limiting surface 410 abuts against the second limiting block 431, the angle between the manhole cover 2 and the fixing ring 1 is 105°-115°. When the manhole cover 2 is set, the angle between it and the fixing ring 1 must be greater than 90° to prevent the manhole cover 2 from closing when technicians enter for maintenance, causing safety hazards to personnel. At the same time, if the angle is too large, the gravity of the manhole cover 2 may cause the fixing ring 1 and the equipment to deform.
[0035] Similarly, since the elastic force of the first clip spring 51 and the second clip spring 52 is used to assist in pulling open the manhole cover 2, the first clip spring 51 and the second clip spring 52 are in a compressed state when the fixing ring 1 and the manhole cover 2 are in a closed state.
[0036] The above are only some embodiments of the present invention. It should be pointed out that for ordinary technicians in this field, other modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.
Claims
1. Power-assisted quick-opening manhole device, characterized in that: include: A fixing ring, a manhole cover and a power-assisted hinge assembly, wherein the fixing ring is connected to the manhole cover through the power-assisted hinge assembly and drives the manhole cover to approach or move away from the fixing ring, and the power-assisted hinge assembly limits the opening and closing angle of the manhole cover. The power-assisted hinge assembly comprises: a mounting portion, a power-assisted portion and a hinge portion, a hinge portion is arranged in the middle of the mounting portion, the power-assisted portion is arranged on the hinge portion, one end of the mounting portion is connected to the fixing ring, and the other end of the mounting portion is connected to the manhole cover, and the power-assisted portion connects the fixing ring and the manhole cover and drives the manhole cover away from the fixing ring.
2. The power-assisted quick-opening manhole device according to claim 1, characterized in that: The mounting portion includes: a first fixing block, a second fixing block and a third fixing block, the hinge portion passes through the first fixing block, the second fixing block is installed at one end of the hinge portion, and the third fixing block is installed at the other end of the hinge portion, the first fixing block is fixedly connected to the fixing ring, and the second fixing block and the third fixing block are directly or indirectly fixedly connected to the manhole cover.
3. The power-assisted quick-opening manhole device according to claim 2, characterized in that: The first fixing block includes: a first support, a second support and a connecting plate, the first support and the second support are symmetrically fixed at two ends of the connecting plate, the first support is provided with a first mounting hole, the top of the first support has a first limiting surface, the second support is provided with a second mounting hole, the top of the second support has a second limiting surface, the first mounting hole and the second mounting hole are symmetrically arranged, and the hinged part is inserted in the first mounting hole and the second mounting hole.
4. The power-assisted quick-opening manhole device according to claim 3, characterized in that: A first limit block is arranged on a side of the second fixing block away from the third fixing block, and an end of the first limit block abuts against a first limit surface to limit the opening and closing angle of the manhole cover; a second limit block is arranged on a side of the third fixing block away from the second fixing block, and an end of the second limit block abuts against a second limit surface to limit the opening and closing angle of the manhole cover.
5. The power-assisted quick-opening manhole device according to claim 4, characterized in that: The hinged part includes: a connecting frame and a rotating shaft, a third mounting hole is arranged on the connecting frame, the connecting frame is sleeved in the middle of the rotating shaft through the third mounting hole, the connecting frame is fixed on the connecting plate, one end of the rotating shaft is arranged in the first mounting hole, and the other end of the rotating shaft is arranged in the second mounting hole.
6. The power-assisted quick-opening manhole device according to claim 5, characterized in that: The assisting part includes: a first retaining spring and a second retaining spring, the first retaining spring sleeve is arranged on the rotating shaft and is limited between the connecting frame and the second fixed block, one end of the first retaining spring is against the connecting frame and the other end is against the second fixed block, the second retaining spring sleeve is arranged on the rotating shaft and is limited between the connecting frame and the third fixed block, one end of the second retaining spring is against the connecting frame and the other end is against the third fixed block.
7. The power-assisted quick-opening manhole device according to any one of claims 1 to 6, characterized in that: The fixing ring is provided with a plurality of fixing holes.
8. The power-assisted quick-opening manhole device according to any one of claims 1 to 6, characterized in that: A handle is provided on the manhole cover, and an observation port is provided at the center of the manhole cover.