Nodular cast iron well lid with fixing mechanism

Abstract

The utility model relates to the technical field of nodular cast iron well lids, in particular to a nodular cast iron well lid with a fixing mechanism, which comprises a well seat, the inner side of the open end of the top of the well seat is hinged with a well lid capable of being used for plugging through a rotating shaft, and one surface of the well lid positioned on the inner side of the well seat is provided with a disc seat and a plurality of groups of shaft seats which are used for supporting. An internal threaded pipe is rotatably mounted between the two groups of shaft seats, a worm wheel for adjustment is assembled on the surface of one side end of the periphery of the internal threaded pipe, and a worm engaged with the worm wheel is assembled on the surface of the bottom end of the disc seat; when the nodular cast iron well lid is used, a T-shaped rod on the inner side of a sleeve on the bottom face of the well lid can be moved, one end of the T-shaped rod can stretch out of the sleeve and be connected with a socket on the inner circumferential surface of a well base in an inserted mode, the well lid hinged to the inner side of the well base can be fixed conveniently, and the well lid can be used more stably; and the situation that the well lid is automatically opened and closed during subsequent use is conveniently reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron manhole covers, and particularly relates to a ductile iron manhole cover with a fixing mechanism. Background Technique

[0002] The ductile iron manhole cover is a kind of ductile iron product. Ductile iron obtains spherical graphite through spheroidization and inoculation treatment, effectively improving the mechanical properties of cast iron, especially improving plasticity and toughness, so as to obtain a strength higher than that of carbon steel. However, since the manhole covers on the surface of general ductile iron manhole covers are directly hinged and installed inside the manhole seat, and there is no corresponding fixing structure, the manhole cover is only embedded inside the manhole seat by its own weight, which causes the manhole cover to easily bounce open when subjected to gravity impact. For this reason, we propose a ductile iron manhole cover with a fixing mechanism. Summary of the Utility Model

[0003] Aiming at the problems in the prior art, the utility model provides a ductile iron manhole cover with a fixing mechanism.

[0004] The technical solution adopted by the utility model to solve its technical problems is a ductile iron manhole cover with a fixing mechanism, including a manhole seat. The inner side of the open end at the top of the manhole seat is hinged with a manhole cover that can be used for plugging through a rotating shaft. And on the side of the manhole cover located inside the manhole seat, a disc seat and a shaft seat for support are assembled. And there are multiple groups of shaft seats. An internal thread tube is rotatably installed between two groups of the shaft seats. And on the outer peripheral side surface of the internal thread tube, a worm gear for adjustment is assembled. The bottom end surface of the disc seat is assembled with a worm that is meshed and connected with the worm gear. And a lead screw for adjustment is screwed and installed inside the internal thread tube.

[0005] One end of the manhole cover located inside the manhole seat is assembled with a sleeve for support. And there are two groups of the sleeves. A T-bar for fixing the manhole cover is slidably installed inside the sleeve. And a socket that is inserted and connected with the T-bar is assembled on the inner peripheral surface of the manhole seat. A cross shaft for adjustment is assembled between the lead screw and the T-bar.

[0006] By adopting the above technical solution, when the ductile iron manhole cover is used, the T-bar inside the sleeve at the bottom surface of the manhole cover can be moved, so that one end of the T-bar can extend out of the sleeve and be inserted into the socket on the inner peripheral surface of the manhole seat, which is convenient for fixing the manhole cover hinged inside the manhole seat, enabling the manhole cover to be used more stably and facilitating the reduction of the subsequent situation of the manhole cover automatically opening and closing during use.

[0007] After the installation positions of the well seat and the well cover are completed, the worm on the bottom surface of the well cover can be rotated, so that the worm can mesh with the worm wheel and drive the worm wheel to rotate. Subsequently, the worm wheel can drive the internal threaded pipe inside the shaft seat to rotate, so that the internal threaded pipe and the lead screw are screwed together. At the same time, since the lead screw, the horizontal shaft and the T-bar are integrally designed, and the T-bar slides inside the sleeve and cannot rotate on its own, the lead screw and the internal threaded pipe are screwed together and the lead screw moves, so that the lead screw can drive the T-bar to move and be inserted into the socket, facilitating the fixation of the well cover inside the well seat, and the adjustment is simple and convenient.

[0008] Specifically, one end of the sleeve close to the shaft seat is equipped with a pipe cap for sealing by screws.

[0009] By adopting the above technical solution, the pipe cap is convenient for disassembly and assembly, facilitating the maintenance of the structure inside the sleeve.

[0010] Specifically, a rubber ring is adhesively bonded inside the sleeve and located on the outer periphery of the T-bar.

[0011] By adopting the above technical solution, the rubber ring has a certain elasticity, facilitating the provision of a certain buffer force for the T-bar.

[0012] Specifically, an arc-shaped strip is integrally formed on the outer periphery of the horizontal shaft, and an arc-shaped groove that fits and connects with the arc-shaped strip is provided on the inner peripheral surface of the pipe cap.

[0013] By adopting the above technical solution, the arc-shaped strip and the arc-shaped groove are fitted and connected with each other, making the horizontal shaft and the pipe cap fit with each other. At the same time, the horizontal shaft will not rotate, enabling the horizontal shaft to move more stably.

[0014] Specifically, a spring is assembled between the pipe cap and the T-bar and located on the outer periphery of the horizontal shaft.

[0015] By adopting the above technical solution, the spring inside the sleeve facilitates the pushing of the T-bar to move, thereby improving the fastening property after the T-bar is connected to the socket.

[0016] Specifically, a swivel seat is rotatably installed on the surface of the well cover and is in transmission connection with the worm.

[0017] By adopting the above technical solution, the swivel seat is convenient for rotation, facilitating the control of the worm on the bottom surface of the well cover.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The technical solution of this application, through the design of the sleeve, T-bar, manhole cover and socket, enables the T-bar inside the sleeve on the bottom surface of the ductile iron manhole cover to move when the manhole cover is in use, so that one end of the T-bar can extend out of the sleeve and be inserted into the socket on the inner peripheral surface of the well seat, facilitating the fixation of the manhole cover hinged inside the well seat, making the manhole cover more stable in use and facilitating the reduction of the subsequent situation of automatic opening and closing of the manhole cover during use.

[0020] 2. The technical solution of this application, through the design of the disc seat, worm, worm gear, shaft seat, internal thread tube, lead screw and cross shaft, can make the worm on the bottom surface of the manhole cover rotate after the installation position of the well seat and the manhole cover is completed, so that the worm can mesh with the worm gear and drive the worm gear to rotate. Subsequently, the worm gear can drive the internal thread tube inside the shaft seat to rotate, making the internal thread tube and the lead screw screw together. At the same time, since the lead screw, cross shaft and T-bar are integrally designed, and the T-bar slides and displaces inside the sleeve and cannot rotate by itself, the lead screw and the internal thread tube screw together and the lead screw moves, enabling the lead screw to drive the T-bar to move and be inserted into the socket, facilitating the fixation of the manhole cover inside the well seat, and the adjustment is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following further describes the present utility model with reference to the drawings and embodiments.

[0022] Figure 1 Is an isometric view of the present utility model;

[0023] Figure 2 Is a schematic diagram of the transmission structure between the T-bar and the worm gear of the present utility model;

[0024] Figure 3 Is a schematic cross-sectional view of the inner structure of the sleeve of the present utility model;

[0025] In the figure: 1, well seat; 2, manhole cover; 3, disc seat; 4, worm; 5, worm gear; 6, shaft seat; 7, internal thread tube; 8, lead screw; 9, sleeve; 10, T-bar; 11, socket; 12, cross shaft; 13, pipe cover; 14, spring; 15, rubber ring; 16, arc bar; 17, arc groove; 18, swivel base. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific embodiments.

[0027] Please refer to Figures 1-3, an embodiment of the present utility model provides a technical solution: a ductile iron manhole cover with a fixing mechanism, including a manhole seat 1. The inner side of the open end at the top of the manhole seat 1 is hinged with a manhole cover 2 that can be used for sealing through a rotating shaft. And on the side of the manhole cover 2 located inside the manhole seat 1, a disc seat 3 and a shaft seat 6 for support are assembled. And there are multiple groups of shaft seats 6. An internal thread tube 7 is rotatably installed between two groups of shaft seats 6. And on the outer peripheral side surface of the internal thread tube 7, a worm gear 5 for adjustment is assembled. On the bottom surface of the disc seat 3, a worm 4 meshed with the worm gear 5 is assembled. And a lead screw 8 for adjustment is screwed and installed inside the internal thread tube 7; One end of the manhole cover 2 located inside the manhole seat 1 is assembled with a sleeve 9 for support. And there are two groups of sleeves 9. A T-bar 10 for fixing the manhole cover 2 is slidably installed inside the sleeve 9. And a socket 11 inserted and connected with the T-bar 10 is assembled on the inner peripheral surface of the manhole seat 1. A cross shaft 12 for adjustment is assembled between the lead screw 8 and the T-bar 10.

[0028] During use, when using the ductile iron manhole cover 2, the T-bar 10 inside the sleeve 9 at the bottom of the manhole cover 2 can be moved, so that one end of the T-bar 10 can extend out of the sleeve 9 and be inserted into the socket 11 on the inner peripheral surface of the manhole seat 1, which is convenient for fixing the manhole cover 2 hinged inside the manhole seat 1, enabling the manhole cover 2 to be used more stably and facilitating the reduction of the subsequent automatic opening and closing of the manhole cover 2 during use;

[0029] After the positions of the manhole seat 1 and the manhole cover 2 are installed, the worm 4 at the bottom of the manhole cover 2 can be rotated, so that the worm 4 can mesh with the worm gear 5 and drive the worm gear 5 to rotate. Subsequently, the worm gear 5 can drive the internal thread tube 7 inside the shaft seat 6 to rotate, making the internal thread tube 7 and the lead screw 8 screw together. At the same time, since the lead screw 8, the cross shaft 12, and the T-bar 10 are integrally designed, and the T-bar 10 slides and displaces inside the sleeve 9 and cannot rotate by itself, the lead screw 8 and the internal thread tube 7 screw together and the lead screw 8 moves, enabling the lead screw 8 to drive the T-bar 10 to move and be inserted into the socket 11, which is convenient for fixing the manhole cover 2 inside the manhole seat 1 and is simple and convenient to adjust.

[0030] As Figure 2 and Figure 3 shown, one end of the sleeve 9 close to the shaft seat 6 is assembled with a pipe cap 13 for sealing through a screw.

[0031] During use, the pipe cap 13 is convenient for disassembly and assembly, facilitating the maintenance of the structure inside the sleeve 9.

[0032] As Figure 3 shown, a rubber ring 15 located on the outer periphery of the T-bar 10 is bonded inside the sleeve 9.

[0033] During use, the rubber ring 15 has a certain elasticity, facilitating the provision of a certain buffering force for the T-bar 10.

[0034] As shown Figure 2 in the figure, an arc-shaped strip 16 is integrally formed on the outer periphery of the horizontal shaft 12, and an arc-shaped groove 17 that fits and connects with the arc-shaped strip 16 is provided on the inner peripheral surface of the pipe cap 13.

[0035] During use, the arc-shaped strip 16 and the arc-shaped groove 17 fit and connect with each other, making the horizontal shaft 12 and the pipe cap 13 fit with each other. At the same time, the horizontal shaft 12 will not rotate, enabling the horizontal shaft 12 to move more stably.

[0036] As shown Figure 3 in the figure, a spring 14 located on the outer periphery of the horizontal shaft 12 is assembled between the pipe cap 13 and the T-bar 10.

[0037] During use, the spring 14 inside the sleeve 9 facilitates the movement of the T-bar 10, thereby improving the tightness after the T-bar 10 is connected to the socket 11.

[0038] As shown Figure 1 and Figure 2 in the figure, a swivel base 18 that is drivingly connected to the worm 4 is rotatably installed on the surface of the manhole cover 2.

[0039] During use, the swivel base 18 rotates conveniently, facilitating the control of the worm 4 on the bottom surface of the manhole cover 2.

[0040] Working principle and usage process of the present utility model: During use, first install the corresponding structural components in appropriate positions. When using the ductile iron manhole cover 2, the T-bar 10 inside the sleeve 9 on the bottom surface of the manhole cover 2 can be moved, so that one end of the T-bar 10 can extend out of the sleeve 9 and be inserted into the socket 11 on the inner peripheral surface of the well seat 1, facilitating the fixation of the manhole cover 2 hinged inside the well seat 1, enabling the manhole cover 2 to be used more stably, facilitating the reduction of the subsequent automatic opening and closing of the manhole cover 2 during use. At the same time, when fixing the manhole cover 2, the swivel base 18 on the surface of the manhole cover 2 can be rotated, and the worm 4 on the bottom surface of the manhole cover 2 will rotate accordingly, enabling the worm 4 to mesh with the worm gear 5 and drive the worm gear 5 to rotate. Subsequently, the worm gear 5 can drive the internal thread tube 7 inside the shaft seat 6 to rotate, making the internal thread tube 7 and the lead screw 8 screw together. At the same time, since the lead screw 8, the horizontal shaft 12, and the T-bar 10 are integrally designed, and the T-bar 10 slides and displaces inside the sleeve 9 without being able to rotate on its own, the lead screw 8 and the internal thread tube 7 screw together and the lead screw 8 moves, enabling the lead screw 8 to drive the T-bar 10 to move and be inserted into the socket 11, facilitating the fixation of the manhole cover 2 inside the well seat 1, and the adjustment is simple and convenient.

[0041] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A ductile iron manhole cover with a fixing mechanism, characterized in that, It includes a well seat (1). Inside the inner side of the open end at the top of the well seat (1), a manhole cover (2) that can be used for plugging is hinged through a rotating shaft. And on one side of the manhole cover (2) located inside the well seat (1), a disc seat (3) and a shaft seat (6) for support are assembled. And there are multiple groups of shaft seats (6). An internally threaded pipe (7) is rotatably installed between two groups of the shaft seats (6). And on the outer peripheral side end surface of the internally threaded pipe (7), a worm gear (5) for adjustment is assembled. On the bottom end surface of the disc seat (3), a worm (4) meshed and connected with the worm gear (5) is assembled. And a lead screw (8) for adjustment is screwed and installed inside the internally threaded pipe (7). One end of the manhole cover (2) located inside the well seat (1) is assembled with a sleeve (9) for support. And there are two groups of the sleeves (9). A T-shaped rod (10) for fixing the manhole cover (2) is slidably installed inside the sleeve (9). And a socket (11) inserted and connected with the T-shaped rod (10) is assembled on the inner peripheral surface of the well seat (1). An adjusting cross shaft (12) is assembled between the lead screw (8) and the T-shaped rod (10).

2. The ductile iron manhole cover with a fixing mechanism according to claim 1, characterized in that, One end of the sleeve (9) close to the shaft seat (6) is assembled with a pipe cap (13) for plugging through a screw.

3. The ductile iron manhole cover with a fixing mechanism according to claim 1, characterized in that, A rubber ring (15) located on the outer periphery of the T-shaped rod (10) is bonded inside the sleeve (9).

4. A ductile iron manhole cover with a fixing mechanism according to claim 1, characterized in that, An arc-shaped strip (16) is integrally formed on the outer periphery of the cross shaft (12). And an arc-shaped groove (17) fitted and connected with the arc-shaped strip (16) is opened on the inner peripheral surface of the pipe cap (13).

5. The ductile iron manhole cover with a fixing mechanism according to claim 2, characterized in that, A spring (14) located on the outer periphery of the cross shaft (12) is assembled between the pipe cap (13) and the T-shaped rod (10).

6. The ductile iron manhole cover with a fixing mechanism according to claim 1, characterized in that, A rotating seat (18) in transmission connection with the worm (4) is rotatably installed on the surface of the manhole cover (2).

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