Seat ring welding anti-deformation device for hoop type manhole
By using a combination of annular pressure plates and high-strength bolts and nuts on the clamp-type manhole seat, the problem of seat ring welding deformation was solved, achieving efficient seat ring fixing and sealing effects, and improving the production quality and economic benefits of tank trucks.
Patent Information
- Application Number
- CN202520412032.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-11
AI Technical Summary
The welding deformation problem of clamp-type manhole seat rings leads to installation difficulties and air leakage, and existing technologies lack effective anti-deformation devices.
A ring-shaped hollow pressure plate made of thick steel plate is combined with high-strength bolts and nuts to form a six-point evenly arranged seat ring welding anti-deformation device, including an upper pressure plate, a lower pressure plate, galvanized high-strength hexagonal bolts and nuts, to ensure the stability and sealing of the seat ring.
It effectively reduces welding deformation of the seat ring, improves installation accuracy and sealing performance, reduces rework costs, and increases production efficiency and pass rate.
Smart Images
Figure CN223947111U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to liquid tank transport vehicle technical field especially relates to a kind of for hoop manhole's seat circle welding anti-deformation device. BACKGROUND
[0002] Liquid tank truck manhole is the opening component for personnel to enter and exit tank body, ventilation and installation, cleaning and maintenance etc.
[0003] Many manhole covers of liquid tank transport vehicle in the existing market are generally divided into bolt fixed manhole cover and hoop manhole cover, and the manhole seat ring of the manhole cover installation is welded on the top of tank body, since the opening diameter of manhole seat ring is very large, generally Φ450mm-Φ510mm, welding deformation control has been a production and process problem.But manhole seat ring is not allowed to have larger deformation, because larger deformation will lead to gas leakage after installing manhole cover, and if deformation is too large, even lead to manhole cover cannot be installed and need to be corrected.The manhole seat ring of conventional twenty-four bolt fixed manhole cover is relatively convenient to use bolt connection tooling to carry out welding anti-deformation control, but the manhole seat ring of hoop manhole cover is difficult to install welding anti-deformation tooling since there is no bolt connection hole, and its manhole seat ring structure is special-shaped, so a kind of seat circle welding anti-deformation device for hoop manhole is proposed to solve the above problems. SUMMARY
[0004] The utility model aims at solving the problems in prior art, and proposes a kind of seat circle welding anti-deformation device for hoop manhole, which is processed into annular hollow pressing plate by thick steel plate and combined with high-strength bolt and nut to form a kind of seat circle welding anti-deformation device for hoop manhole, which can reduce weight, relatively simple processing equipment and process, good for reducing the implementation effect of manhole seat ring welding deformation, and reduce the probability of gas leakage after installing manhole cover and the cost of various rework.
[0005] To achieve the above object, the utility model adopts the following technical scheme:
[0006] The utility model provides a kind of seat circle welding anti-deformation device for hoop manhole, including manhole cover and tank top, the bottom of the manhole cover is assembled with manhole seat circle, installation hole is set through on the tank top, the manhole seat circle is put into tank top through installation hole and is welded with tank top fixedly, the upper portion of the manhole seat circle is equipped with manhole sealing ring clamping groove, the manhole sealing ring clamping groove is installed with manhole sealing ring, the manhole cover is assembled with manhole seat circle by pressing manhole sealing ring, the manhole cover and the outer ring of manhole seat circle are locked using manhole hoop, the upper portion of the manhole seat circle is equipped with upper pressing plate, six integral structures formed by galvanized high-strength hexagonal bolt and lower pressing plate are slidably connected in circumferential array on the upper pressing plate, two galvanized high-strength hexagonal nuts for pressing the upper pressing plate are sleeved on each galvanized high-strength hexagonal bolt.
[0007] Preferably, the manhole seat circle is composed of manhole sealing ring clamping groove and manhole seat circle cylinder section, the manhole sealing ring clamping groove is located directly above the manhole seat circle cylinder section and the centers of the two are concentric.
[0008] Preferably, the manhole hoop is penetrated by fastening bolt and locked by fastening nut.
[0009] Preferably, the upper pressing plate is made of steel plate with a thickness of mm by numerical control blanking, and is hollowed out in the middle into a "plum blossom shape".
[0010] Preferably, the screw rod of the galvanized high-strength hexagonal bolt is arranged at a distance of 3-5 mm from the inside of the manhole seat circle.
[0011] Preferably, the lower pressing plate is a rectangular small plate, which ensures the pressing effect while reducing weight and facilitating disassembly and assembly.
[0012] Compared with the prior art, the utility model has the beneficial effects that:
[0013] The seat circle welding anti-deformation device for hoop manhole is simple to manufacture and process, and relies less on professional equipment; the six-point uniform arrangement of the manhole seat circle welding anti-deformation device supports the manhole seat circle through the cooperation of the upper pressing plate, the lower pressing plate, the galvanized high-strength hexagonal nut and the galvanized high-strength hexagonal nut, which not only ensures the pressing effect on the manhole seat circle but also does not excessively increase the weight of the device, solves the long-standing technical problem of seat circle welding deformation of hoop manhole, improves the processing and manufacturing precision of the tank body, improves the qualification rate of subsequent hoop manhole cover assembly, and has good economic benefits. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 Figure 1 is a front view of a seat circle welding anti-deformation device for hoop manhole according to the utility model;
[0015] Figure 2 This is a top view of the anti-deformation device for welding the seat ring of a clamp-type manhole according to the present invention.
[0016] Figure 3 A schematic diagram of the cross-sectional structure at point AA of the manhole seat ring;
[0017] Figure 4 This is a schematic diagram of the BB section of a welding anti-deformation device for a clamp-type manhole.
[0018] Figure 5 This is a schematic diagram of the upper pressure plate.
[0019] Figure 6 This is a schematic diagram of the connection between the manhole clamp, fastening nut, and fastening bolt.
[0020] In the diagram: 1. Manhole cover; 2. Tank top plate; 3. Manhole seat ring; 4. Manhole sealing ring; 5. Manhole clamp; 6. Manhole sealing ring groove; 7. Manhole seat ring cylinder section; 8. Galvanized high-strength hexagonal bolt; 9. Galvanized high-strength hexagonal nut; 10. Upper pressure plate; 11. Lower pressure plate; 12. Fastening nut; 13. Fastening bolt. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0022] Reference Figures 1-6 A device for preventing deformation during welding of the seat ring of a clamp-type manhole, referring to... Figure 1 and Figure 2 The system includes a manhole cover 1 and a tank top plate 2. A manhole seat ring 3 is assembled at the bottom of the manhole cover 1. An installation hole is provided through the tank top plate 2. The manhole seat ring 3 passes through the installation hole and is inserted into the tank top plate 2 and welded and fixed to the tank top plate 2. The manhole seat ring 3 provides an installation base and support for the manhole cover 1. The manhole cover 1 is used to close the manhole opening to prevent liquid leakage from the tank.
[0023] Reference Figure 3 The upper part of the manhole seat ring 3 is provided with a manhole sealing ring groove 6. The manhole seat ring 3 is composed of the manhole sealing ring groove 6 and the manhole seat ring cylinder section 7 welded together. The manhole sealing ring groove 6 is located directly above the manhole seat ring cylinder section 7 and the two are concentric.
[0024] A manhole sealing ring 4 is installed in the manhole sealing ring groove 6 to ensure the manhole's sealing performance. The manhole cover 1 presses down on the manhole sealing ring 4 and is assembled with the manhole seat ring 3. The outer rings of the manhole cover 1 and the manhole seat ring 3 are locked together using a manhole clamp 5. (Refer to...) Figure 6The manhole hoop 5 is penetrated by fastening bolts 13 and locked by fastening nuts 12;
[0025] With reference to Figure 4 And Figure 5 The upper pressing plate 10 is made of a steel plate with a thickness of 18 mm and is cut by a numerical control machine, and a center part of the upper pressing plate 10 is hollowed out in a plum blossom shape, so that the weight of the upper pressing plate 10 is greatly reduced, the plum blossom shape has more weight reduction and larger space than a ring shape, and the plum blossom shape facilitates the welding personnel to enter and exit and ventilation inside and outside the tank, and after the manhole seat ring welding anti-deformation device is installed, the welder first enters the tank to weld the fillet weld between the manhole seat ring 3 and the tank body, and then the welder can exit the manhole seat ring 3 to weld the fillet weld between the manhole seat ring 3 and the tank body outside the tank, so that the continuity of work is ensured, and the production efficiency is improved.
[0026] Six integral structures formed by galvanized high-strength hexagonal bolts 8 and lower pressing plates 11 are slidably connected in a circumferential array on the upper pressing plate 10, the manhole seat ring welding anti-deformation device is uniformly arranged at six points, the manhole seat ring welding anti-deformation device can ensure the pressing effect on the manhole seat ring 3, and the weight of the device is not excessively increased, two galvanized high-strength hexagonal nuts 9 for pressing the upper pressing plate 10 are sleeved on each galvanized high-strength hexagonal bolt 8, the screw rod of the galvanized high-strength hexagonal bolt 8 is arranged at a distance of 3-5 mm from the inner side of the manhole seat ring 3 and as close as possible, and the purpose is to enhance the pressing effect and reduce the deformation of the lower pressing plate 11.
[0027] The upper pressing plate 10 and the lower pressing plate 11 are connected by full-thread galvanized high-strength hexagonal bolts 8 (M16*150) and galvanized high-strength hexagonal nuts 9 (M16), the full-thread bolt connection can adjust the spacing between the upper pressing plate 10 and the lower pressing plate 11, so that the pressing of manhole seat rings 3 with different heights is adapted, the adaptation range is wider, the high-strength bolts and nuts do not need to be additionally processed into special parts, the machining cost is reduced, the strength is ensured, batch processing is suitable, the hexagonal head bolts are convenient for fastening by using a wrench and the like, and the double nuts are used for fastening, which can reduce the loosening of the nuts caused by thermal deformation in the welding process, so as to affect the pressing effect, and if only one nut is used, the nut may be loosened and then the lower pressing plate 11 and the bolt may fall into the tank, which may damage the plate or be left in the tank to cause the valve to be stuck.
[0028] The lower pressing plate 11 is in the shape of a rectangular small plate instead of an integral ring structure, so that the pressing effect is ensured, the weight is reduced, and the lower pressing plate 11 is convenient to disassemble and assemble, and if the lower pressing plate 11 is in the shape of an integral ring structure, the lower pressing plate 11 cannot be put into the tank.
[0029] The utility model can be described by the following operation modes to illustrate the functional principle:
[0030] The utility model discloses, using, first all the turn to the inside of the lower pressing plate 11 of the deformation prevention device of manhole seat circle welding, make its protruding part towards the center of manhole seat circle 3, put it from top to bottom into the jar until the upper pressing plate 10 press the manhole seat circle 3, adjust the upper pressing plate 10 and manhole seat circle 3 and guarantee the center concentric, again turn the protruding part of the lower pressing plate 11 one by one and press the lower edge of manhole seat circle 3 to the outside, first use hand slowly lock galvanized high strength hexagon nut 9 to press the upper pressing plate 10, finally use spanner cross locking galvanized high strength hexagon nut 9, when disassembling, according to the reverse order of above-mentioned reverse operation can be completed, the deformation prevention device of manhole seat circle welding is installed, and the welder enters the jar first and welds the fillet weld of manhole seat circle 3 and jar body, immediately the welder can come out from manhole seat circle 3, and the fillet weld of manhole seat circle 3 and jar body is welded outside the jar, guarantee the continuity of work, improve production efficiency.
[0031] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme and utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.
Claims
1. A deformation prevention device for welding of a seat ring of a hoop type manhole comprising a manhole cover (1) and a tank top plate (2), characterized in that, The bottom of the manhole cover (1) is assembled with a manhole seat ring (3), the tank top plate (2) is provided with a mounting hole, the manhole seat ring (3) is put into the tank top plate (2) through the mounting hole and is welded and fixed with the tank top plate (2), the upper part of the manhole seat ring (3) is provided with a manhole sealing ring clamping groove (6), the manhole sealing ring (4) is installed in the manhole sealing ring clamping groove (6), the manhole cover (1) is assembled with the manhole sealing ring (4) and the manhole seat ring (3), the manhole cover (1) and the outer ring of the manhole seat ring (3) are locked by the manhole clamp (5), the upper part of the manhole seat ring (3) is provided with an upper pressing plate (10), the upper pressing plate (10) is provided with six integral structures formed by welding together galvanized high-strength hexagonal bolts (8) and lower pressing plates (11) and connected by sliding through the upper pressing plate (10) in a circular array, two galvanized high-strength hexagonal nuts (9) are sleeved on each galvanized high-strength hexagonal bolt (8) to press the upper pressing plate (10).
2. A device for preventing deformation of a saddle weld of a clamp type manhole according to claim 1, wherein The manhole seat ring (3) is composed of a manhole sealing ring clamping groove (6) and a manhole seat ring cylinder section (7) which are welded together, the manhole sealing ring clamping groove (6) is located directly above the manhole seat ring cylinder section (7) and the centers of the two are concentric.
3. A device for preventing deformation of a saddle weld of a clamp type manhole according to claim 1, wherein The manhole clamp (5) is used through the fastening bolt (13) and is locked by the fastening nut (12).
4. A device for preventing deformation of a saddle weld of a clamp type manhole according to claim 1, wherein The upper pressing plate (10) is made of a steel plate with a thickness of 18mm and is cut by numerical control, and the middle part is hollowed out in a "plum blossom shape".
5. A device for preventing deformation of a saddle weld of a clamp type manhole according to claim 1, wherein The screw rod of the galvanized high-strength hexagonal bolt (8) is arranged at a distance of 3-5mm from the inner side of the manhole seat ring (3).
6. A device for preventing deformation of a saddle weld of a clamp type manhole according to claim 1, wherein The lower pressing plate (11) is a rectangular small plate, which can ensure the pressing effect, reduce the weight and facilitate disassembly and assembly.