CN216334280U - Manhole equipment - Google Patents
Manhole equipment Download PDFInfo
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- CN216334280U CN216334280U CN202122520009.3U CN202122520009U CN216334280U CN 216334280 U CN216334280 U CN 216334280U CN 202122520009 U CN202122520009 U CN 202122520009U CN 216334280 U CN216334280 U CN 216334280U
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- manhole
- rod
- rocker
- speed reducing
- reducing motor
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Abstract
The utility model provides a manhole device. The manhole device comprises a shell and a speed reducing motor, a manhole is arranged on the shell, the speed reducing motor is fixed on the shell, one end of a rocker is fixed on an output shaft of the speed reducing motor, the other end of the rocker is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a pressing rod, one end of the pressing rod is hinged to the shell through a support, a manhole cover is arranged at the other end of the pressing rod, and the manhole cover is used for shielding the manhole. The manhole equipment can realize electric opening and closing of the manhole, can meet sealing performance, can replace a conventional manhole, and is applied to dangerous occasions where people cannot reach easily.
Description
Technical Field
The utility model relates to a manhole, in particular to manhole equipment which is driven by a motor to open and close.
Background
The conventional manhole is characterized in that an upper flange and a lower flange are locked by a fastening piece, and a sealing gasket is extruded to achieve the effect of fastening and sealing. Although the conventional manhole is simple to implement and reliable in sealing performance, and is widely used, the installation and removal of a large number of high-strength bolts on a manhole flange can be performed only by manpower, which is not an easy task. If the equipment for installing the manhole is in the relatively dangerous and severe places such as narrow space, high altitude and the like, such as the top manhole of a tank car, the working strength and the safety risk of operators are inevitably increased, the working efficiency is low, and even potential safety hazards are formed.
In the above situation, if a set of electric actuator can be arranged on the manhole to open and close the manhole, the working strength is greatly reduced, the working efficiency is improved, and meanwhile, the safety accident risk is reduced.
The manhole cover is usually driven to open and close by an electric worm and gear mechanism, and when the manhole is closed, the manhole is sealed by the locking action of a worm and gear transmission amplitude. This solution is easy to implement, but has a problem in that, as the worm gear is worn, the sealing effect may be drastically reduced by the formed working gap, and thus it cannot withstand pressure and is used in a vibration environment, greatly limiting its application.
SUMMERY OF THE UTILITY MODEL
Based on the above, the present invention provides a manhole device, which comprises a mechanical transmission device, and not only can transmit the torque output by a motor to open and close the manhole, but also the device can form a reliable locking force when the manhole is closed, so as to meet the sealing performance requirement of the manhole in use.
The utility model provides manhole equipment which comprises a shell and a speed reducing motor, wherein a manhole is formed in the shell, the speed reducing motor is fixed on the shell, one end of a rocker is fixed on an output shaft of the speed reducing motor, the other end of the rocker is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a pressing rod, one end of the pressing rod is hinged to the shell through a support, a manhole cover is installed at the other end of the pressing rod, and the manhole cover is used for covering the manhole.
Further, a sealing gasket is arranged between the manhole cover and the manhole, and the sealing gasket is used for sealing a gap between the manhole cover and the manhole.
Furthermore, an adjusting rod is movably arranged between the pressing rod and the manhole cover, and the pressing rod is connected with the manhole cover through the adjusting rod.
Furthermore, the adjusting rod is connected with the pressure rod through threads.
Furthermore, the adjusting rod comprises a screw rod penetrating through the pressing rod and two nuts arranged on the screw rod, one end of the screw rod is connected with the manhole cover, one nut is arranged above the pressing rod, and the other nut is arranged below the pressing rod.
The manhole device comprises a rocker, a connecting rod, a pressure rod, a manhole cover and a manhole, wherein the pressure rod is installed on a device shell through a support, the rocker is driven by a speed reduction motor fixed on the device shell, the whole device forms a four-bar mechanism, the manhole can be opened and closed electrically, the sealing performance can be met, the manhole device can replace a conventional manhole, and the manhole device is applied to dangerous occasions where people are not easy to reach.
During operation, along with gear motor's rotation, the drive is fixed and is rotated in step at its output shaft's rocker, and the other end of rocker is articulated with the one end of connecting rod, and the rotation of rocker leads to the motion of connecting rod again, further leads to taking place the motion with the articulated depression bar of the connecting rod other end, because the one end of depression bar passes through the support and articulates on the casing, so the rotation of rocker has led to the rotation of depression bar for install the manhole cover at the depression bar other end and can produce the action of opening and shutting on the manhole.
Furthermore, the rocker, the connecting rod, the pressure lever and the shell form a four-bar mechanism, wherein the rocker is a driving part, the pressure lever is a driven part, and the movement of the rocker is synchronous with the speed reducing motor, so that the pressure lever is driven by controlling the speed reducing motor to apply torque on the pressure lever, the manhole cover arranged on the pressure lever is opened and closed, and the manhole is electrically opened and closed.
Furthermore, the speed reducing motor drives the rocker to close the manhole cover, the manhole cover gradually draws close to the manhole, when the sealing surfaces of the rocker and the manhole cover are combined together, the generated reaction force forms reaction moment on the pressure lever, the rocker and the connecting rod are arranged in a straight line at the moment, namely, a 'dead point' state of the four-bar mechanism is formed, as the pressure lever is a driven part, even if the speed reducing motor stops working at the moment, the reaction moment applied on the pressure lever can not change the state of the whole mechanism, and as the entity mechanism has certain elasticity, the reaction moment can not disappear; and because the sealing gasket is arranged between the sealing joint surfaces, the counter torque becomes a pre-tightening force to act on the sealing gasket, so that the sealing gasket is compressed to form reliable sealing, and the sealing of the electric opening and closing manhole in a closed state is completed.
Furthermore, a length-adjustable adjusting rod is arranged between the pressure rod and the manhole cover, the pre-tightening force is not enough to form reliable sealing in consideration of possible precision deviation in manufacturing, deformation, aging and the like of a mechanism in the using process, and the length of the adjusting rod is adjusted at the moment, for example, when the adjusting rod is adjusted by threads, the adjusting rod achieves the purpose of adjusting by screwing a nut on a screw rod.
Furthermore, when the manhole equipment needs to be opened, the dead point state can be quitted only by enabling the speed reducing motor to run in the direction opposite to the direction when the speed reducing motor is closed, and the rocker pulls the pressing rod to separate the manhole cover from the manhole under the driving of the speed reducing motor, so that the opening operation of electrically opening and closing the manhole is realized.
Drawings
Figure 1 is a schematic view of a manhole cover of the manhole apparatus of the present invention closing a manhole;
FIG. 2 is a schematic view of the manhole cover of the manhole device shown in FIG. 1 separated from the manhole;
in the figure: the manhole cover comprises a shell 1, a manhole 2, a sealing gasket 3, a manhole cover 4, an adjusting rod 5, a screw 51, a nut 52, a pressure rod 6, a connecting rod 7, a rocker 8, a speed reduction motor 9 and a support 10.
Detailed Description
To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1-2, the present invention provides a manhole device, including a housing 1 and a speed reduction motor 9, wherein the housing 1 is provided with a manhole 2, the speed reduction motor 9 is fixed on the housing 1, an output shaft of the speed reduction motor 9 is fixed with one end of a rocker 8, the other end of the rocker 8 is hinged with one end of a connecting rod 7, the other end of the connecting rod 7 is hinged with a pressure lever 6, one end of the pressure lever 6 is hinged on the housing 1 through a bracket 10, the other end of the pressure lever 6 is provided with a manhole cover 4, the manhole cover 4 is used for shielding the manhole 2, and when the manhole cover 4 is closed on the manhole, a four-bar linkage mechanism formed by the rocker 8, the connecting rod 7, the pressure lever 6 and the housing 1 is exactly located at a dead point.
In one embodiment, a gasket 3 is provided between the manhole cover 4 and the manhole 2, the gasket 3 being used to seal the gap between the manhole cover 4 and the manhole 2. Specifically, the speed reducing motor 9 drives the rocker 8 to close the manhole cover 4, the manhole cover 4 gradually approaches to the manhole, when the sealing surfaces of the two are combined together, the generated reaction force forms a reaction moment on the pressure lever 6, at the moment, the rocker 8 and the connecting rod 7 are arranged in a straight line, namely, a 'dead point' state of the four-bar mechanism is formed, and meanwhile, a contact switch (not shown) is triggered, so that the speed reducing motor 9 stops working at the moment, overload damage is avoided, because the pressure lever 6 is a driven part, the reaction moment applied to the pressure lever cannot change the state of the whole mechanism, and because the entity mechanism has certain elasticity, the reaction moment cannot disappear; and because the sealing gasket 3 is arranged between the sealing joint surfaces, the counter torque becomes a pre-tightening force to act on the sealing gasket 3, so that the sealing gasket 3 is compressed to form reliable sealing, and the sealing of the electric opening and closing manhole in a closed state is completed.
In one embodiment, an adjusting rod 5 is movably arranged between the pressure bar 6 and the manhole cover 4, i.e. a length-adjustable adjusting rod 5 is arranged between the pressure bar 6 and the manhole cover 4, and the pressure bar 6 is connected with the manhole cover 4 through the adjusting rod 5.
In one embodiment, the adjusting rod 5 is connected to the pressing rod 6 through a screw, for example, two nuts 52 are connected to a screw 51 through a screw, specifically, the adjusting rod 5 includes a screw 51 penetrating the pressing rod 6 and two nuts 52 arranged on the screw 51, one end of the screw 51 is connected to the manhole cover 4, one nut 52 is arranged above the pressing rod 6, and the other nut 52 is arranged below the pressing rod 6.
It should be understood that the connection manner of the adjusting rod 5 and the pressing rod 6 is not limited, as long as the length of the adjusting rod 5 is adjustable.
By arranging the length-adjustable adjusting rod 5 between the pressure rod 6 and the manhole cover 4, the purpose is to take into account possible precision deviation in manufacturing and possible deformation, aging and the like of the mechanism in the using process, so that the pre-tightening force is not enough to form reliable sealing, and at the moment, the screw 51 between the manhole cover 4 and the pressure rod 6 can be extended by screwing the nut 52 on the screw 51, so that the pre-tightening force is increased, and the sealing gasket 3 is compressed.
When the manhole device works, the rocker fixed on the output shaft of the speed reducing motor is driven to synchronously rotate along with the rotation of the speed reducing motor, the other end of the rocker is hinged with one end of the connecting rod, the rotation of the rocker causes the movement of the connecting rod, and further causes the movement of the pressure rod hinged with the other end of the connecting rod, and because one end of the pressure rod is hinged on the shell through the support, the rotation of the rocker causes the rotation of the pressure rod, so that the manhole cover arranged at the other end of the pressure rod can generate opening and closing actions on a manhole.
Furthermore, the rocker, the connecting rod, the pressure lever and the shell form a four-bar mechanism, wherein the rocker is a driving part, the pressure lever is a driven part, and the movement of the rocker is synchronous with the speed reducing motor, so that the pressure lever is driven by controlling the speed reducing motor to apply torque on the pressure lever, the manhole cover arranged on the pressure lever is opened and closed, and the manhole is electrically opened and closed.
Furthermore, the speed reducing motor drives the rocker to close the manhole cover, the manhole cover gradually draws close to the manhole, when the sealing surfaces of the rocker and the manhole cover are combined together, the generated reaction force forms reaction moment on the pressure lever, the rocker and the connecting rod are arranged in a straight line at the moment, namely, a 'dead point' state of the four-bar mechanism is formed, as the pressure lever is a driven part, even if the speed reducing motor stops working at the moment, the reaction moment applied on the pressure lever can not change the state of the whole mechanism, and as the entity mechanism has certain elasticity, the reaction moment can not disappear; and because the sealing gasket is arranged between the sealing joint surfaces, the counter torque becomes a pre-tightening force to act on the sealing gasket, so that the sealing gasket is compressed to form reliable sealing, and the sealing of the electric opening and closing manhole in a closed state is completed.
Furthermore, a length-adjustable adjusting rod is arranged between the pressure rod and the manhole cover, the pre-tightening force is not enough to form reliable sealing in consideration of possible precision deviation in manufacturing, deformation, aging and the like of a mechanism in the using process, and the length of the adjusting rod is adjusted at the moment, for example, when the adjusting rod is adjusted by threads, the adjusting rod achieves the purpose of adjusting by screwing a nut on a screw rod.
Furthermore, when the manhole equipment needs to be opened, the dead point state can be quitted only by enabling the speed reducing motor to run in the direction opposite to the direction when the speed reducing motor is closed, and the rocker pulls the pressing rod to separate the manhole cover from the manhole under the driving of the speed reducing motor, so that the opening operation of electrically opening and closing the manhole is realized.
The above examples only express embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The manhole device is characterized by comprising a shell and a speed reducing motor, wherein a manhole is formed in the shell, the speed reducing motor is fixed to the shell, one end of a rocker is fixed to an output shaft of the speed reducing motor, the other end of the rocker is hinged to one end of a connecting rod, the other end of the connecting rod is hinged to a pressing rod, one end of the pressing rod is hinged to the shell through a support, a manhole cover is installed at the other end of the pressing rod, and the manhole cover is used for shielding the manhole.
2. Manhole apparatus according to claim 1, wherein a sealing gasket is provided between the cover and the manhole, the sealing gasket being adapted to seal a gap between the cover and the manhole.
3. Manhole apparatus according to claim 2, wherein an adjustment rod is movably disposed between the pressure bar and the manhole cover, and the pressure bar is connected to the manhole cover through the adjustment rod.
4. Manhole apparatus according to claim 3, wherein the adjusting rod is connected to the pressure rod by means of a thread.
5. The manhole apparatus of claim 4, wherein the adjusting rod comprises a screw rod penetrating through the pressure rod and two nuts disposed on the screw rod, one end of the screw rod is connected to the manhole cover, one of the nuts is disposed above the pressure rod, and the other nut is disposed below the pressure rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122520009.3U CN216334280U (en) | 2021-10-20 | 2021-10-20 | Manhole equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122520009.3U CN216334280U (en) | 2021-10-20 | 2021-10-20 | Manhole equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216334280U true CN216334280U (en) | 2022-04-19 |
Family
ID=81178071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122520009.3U Active CN216334280U (en) | 2021-10-20 | 2021-10-20 | Manhole equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216334280U (en) |
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2021
- 2021-10-20 CN CN202122520009.3U patent/CN216334280U/en active Active
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