CN210286732U - Pushing mechanism for sealed cover of closed loading crane for oil filling riser - Google Patents
Pushing mechanism for sealed cover of closed loading crane for oil filling riser Download PDFInfo
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- CN210286732U CN210286732U CN201921199298.8U CN201921199298U CN210286732U CN 210286732 U CN210286732 U CN 210286732U CN 201921199298 U CN201921199298 U CN 201921199298U CN 210286732 U CN210286732 U CN 210286732U
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Abstract
The utility model provides a pushing and pressing mechanism for a sealing cover of an airtight loading crane for a crane pipe. The pushing mechanism is positioned above the sealing cover and comprises a driving device, a pressure device and a fastening device, the driving device is connected with the pressure device, and the fastening device is arranged outside an inner pipe of a telescopic vertical pipe of the loading arm; the pressure device is arranged outside the fastening device; the pressure device and the fastening device, and the fastening device and the inner pipe can move relatively; the pressure device provides the fastening device with a pushing force for fastening the inner tube and a pressure force for moving the inner tube relative to the outer tube. The utility model discloses a pushing and pressing mechanism utilizes the interaction force between pressure device and the fastener for the automatic fastening inner tube of fastener reaches the effect that compresses tightly sealed lid through the motion of inner tube, guarantees that airtight loading is sealed reliable.
Description
Technical Field
The utility model relates to a bulldoze the ware structure, especially relate to a pushing and pressing mechanism that is used for airtight loading of oil filling riser sealed lid.
Background
The loading arm is a common device in the petrochemical industry and is used for loading and unloading fluids such as petroleum, natural gas and the like on a tank truck. When the oil filling riser is used for closed loading, a sealing cap is generally arranged outside the oil filling riser in order to reduce the volatilization of oil gas, and a tank opening is sealed in the loading and unloading process so as to reduce the environmental pollution. However, the loading arm and the tank truck mouth are easy to move due to factors such as the pressure of oil product evaporation gas or the increase of vehicle load, and the like, so that the sealing cap is not tightly sealed, and the oil gas leakage problem is caused.
In order to solve the problem that the sealing of the closed loading is unreliable, a sealing cap needs to be pressed on the tank wagon opening. Chinese patent ZL201820014980.4 provides a compressing and sealing device, which provides pressing force through a compressing cylinder, and adopts a ball head connecting part to ensure that a sealing cover plate is attached to a tank car opening. The compressing device uses a hollow cylinder to lift the inner pipe and the sealing gasket, and because the heights of tank openings of the tank truck are different, the stroke of the inner pipe is usually between 1000mm and 1500mm, so that the stroke of the cylinder is longer (about 1800 mm); in addition, the cylinder is sleeved on the outer pipe, and the diameter of the cylinder barrel is larger. Therefore, the compression sealing device has the advantages of complex structure, large volume, heavy weight, difficult processing and high cost.
Chinese patent ZL201821098675.4 relates to an oil storage and transportation oil gas recovery system, wherein the clamping device who adopts includes the holder and the telescopic link that articulate in oil gas collecting pipe upper portion, and the middle part of holder is articulated to one end of telescopic link for the flexible of control holder. During sealing, the telescoping member is shortened so that the clamping member approaches and clamps the slot car mouth. However, the clamping structure is only suitable for clamping the air bag at the end face of the vehicle opening of the sealing groove, and the structure is not firm enough and the sealing effect is not good.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above prior art, the utility model aims to provide a pushing and pressing mechanism for compressing tightly sealed lid, this mechanism simple structure, it is sealed effectual.
In order to achieve the above object, the utility model adopts the following technical scheme:
a pushing and pressing mechanism of a sealing cover of a loading arm closed loading vehicle is positioned above the sealing cover and comprises a driving device and a pressure device, wherein the driving device is connected with the pressure device; the telescopic vertical pipe of the oil filling riser comprises an inner pipe and an outer pipe; the pushing mechanism further comprises a fastening device, and the fastening device is arranged outside the inner pipe; the pressure device is arranged outside the fastening device; the pressure device and the fastening device, and the fastening device and the inner pipe can move relatively; the pressure device provides the fastening device with a pushing force for fastening the inner tube and a pressure force for moving the inner tube relative to the outer tube.
Further, the pushing mechanism further comprises a telescopic device, and the telescopic device is connected with the fastening device and is positioned between the fastening device and the sealing cover.
Further, the telescopic device adopts a pressure spring assembly.
Further, the driving device is fixed on the outer tube.
Furthermore, at least one of the contact surfaces of the pressure device and the fastening device is an inclined surface.
Further, the pressure device adopts a pressing block with an inclined plane, and the inclined plane of the pressing block faces the fastening device.
Furthermore, the pressure device further comprises a pressure plate and a pressing block sleeve, wherein the pressing block is installed in the pressing block sleeve, the pressing block sleeve is fixed on the pressure plate, and the pressure plate is connected with the driving device.
Further, the fastening devices are multiple and are uniformly distributed along the circumference of the inner pipe.
Furthermore, the fastening device is an annular structure and is sleeved outside the inner pipe.
Further, the fastening device comprises a fastening piece and a supporting sleeve, and the fastening piece is installed in the supporting sleeve.
The utility model discloses a pushing and pressing mechanism utilizes the interaction force between pressure device and the fastener for the automatic fastening inner tube of fastener reaches the effect that compresses tightly sealed lid through the motion of inner tube, guarantees that airtight loading is sealed reliable. The utility model discloses a pushing and pressing mechanism has simple structure, and is small, light in weight, and thrust is big, and processing is convenient, but advantages such as cost are saved to the shortened cylinder stroke.
Drawings
Fig. 1 is a schematic view of a mechanism according to an embodiment of the present invention before pushing.
Fig. 2 is a schematic view of the mechanism according to the embodiment of the present invention after pushing.
In the figure, 1-truss connecting flange, 2-liquid phase connecting flange, 3-gas phase connecting flange, 4-gas-liquid phase splitting tee joint, 5-liquid phase pipe, 6-outer pipe, 7-inner pipe, 8-driving device, 9-connecting seat, 10-pressing plate, 11-pressing block sleeve, 12-pressing block, 13-ball, 14-supporting sleeve, 15-telescopic device and 16-sealing cover.
Detailed Description
The invention will be elucidated below on the basis of an embodiment shown in the drawing. The embodiments disclosed herein are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is not limited by the following description of the embodiments, but is only indicated by the scope of the claims.
The pushing mechanism of the embodiment is applied to the process of loading the truss loading arm in a closed mode. The embodiment relates to a main structure of a truss crane pipe, which comprises: the gas-liquid phase separation three-way valve comprises a gas-liquid phase separation three-way valve 4, a liquid phase pipe 5 and a telescopic vertical pipe (comprising an outer pipe 6 and an inner pipe 7). Wherein the gas-liquid phase separation tee joint 4 is used for recovering residual gas, and the liquid phase pipe 5 is a multi-stage telescopic pipe. The outer pipe 6 is fixed on an outer flange of the gas-liquid phase separation tee joint 4. The inner tube 7 is sleeved inside the outer tube 6 and is coaxially arranged and can slide up and down along the inner wall of the outer tube 6, the lower end of the inner tube 7 is connected with the sealing cover 16, and the inner tube 7 can drive the sealing cover 16 to move up and down. The sealing cover 16 is made of medium-resistant rubber and is in contact with the tank opening of the tank car.
The pushing mechanism is provided at the lower end of the outer tube 6 above the sealing cap 16. The pushing mechanism comprises a driving device 8, a pressure device, a fastening device and a telescoping device 15. The drive means 8 are connected to pressure means, which are located outside the fastening means, and the fastening means are connected to the expansion means 15. The pressure means is movable up and down in relation to the fastening means, which is movable up and down along the outer surface of the inner tube 7.
The driving device 8 is used for driving the pressure device to move up and down, and an air cylinder or an oil cylinder can be used. In this embodiment, a connecting seat 9 is provided on the outer wall of the lower portion of the outer tube 6, and the driving device 8 is fixed to the connecting seat 9.
The pressure device is used for providing pushing pressure, namely pushing force for fastening the inner tube inwards and pressure for driving the inner tube to move downwards, and specifically, an integrated press block structure can be adopted, or a split structure which is composed of a press plate 10, a press block sleeve 11 and a press block 12 and is shown in fig. 1 can be adopted, wherein the press plate 10 is sleeved outside the inner tube 6 and is connected with an output rod of the driving device 8, the press block 12 is fixed on the inner side of the press block sleeve 11, and the press block sleeve 11 and the press plate 10 are fixed together.
The fastening device can adopt a split structure shown in fig. 1, namely, the fastening device comprises a fastening ball 13 and a support sleeve 14, the support sleeve 14 is sleeved on the inner side of the pressing block sleeve 11 and is positioned on the outer part of the inner tube 7, the support sleeve 14 and the pressing block sleeve 11 and the inner tube 7 can move relatively, and the ball 13 is arranged in a small hole or a groove on the support sleeve 14 and can roll. The balls 13 are provided in plurality and uniformly distributed along the circumference of the inner tube 7, and correspondingly, the pressure means is also provided in plurality. The fastening device can also be in the form of an integral hoop directly sleeved outside the inner pipe 7 without the support sleeve 14. An inclined surface is required to be arranged on a contact surface when the pressure device and the fastening device are extruded, the form of the other contact surface is not limited, the other contact surface can be a T-shaped inclined block, a sphere, a cylinder, a triangle and the like, and the fastening device is only required to be stressed in the direction towards the inner pipe 7. In the embodiment, the contact surface of the pressing block 12 is set to be an inclined surface, and the fastening piece of the fastening device adopts a ball 13 of a sphere or a cylinder.
The telescopic device 15 is located below the fastening device and used for adjusting the height of the fastening device, and mainly comprises a spring and a screw rod, and other structures which can achieve similar effects and can be telescopically adjusted, such as a tension spring, a torsion spring, a rubber elastic body and the like, can be adopted. One end of the screw rod of the embodiment passes through a hole on the flange of the support sleeve 14 to be connected with the pressing block sleeve 11, and the other end of the screw rod is provided with a step. The lower end of the spring is pressed on the step of the screw, the upper end of the spring is pressed on the lower end surface of the support sleeve 14, the spring pushes the support sleeve 14 upwards by taking the step surface at the lower end of the screw as a support, and the pressing force of the spring is greater than the sum of the gravity of the support sleeve 14 and the gravity of the ball 13.
The operation of the pressing mechanism of the present embodiment is described in detail below:
in an initial state, as shown in fig. 1, the inner tube 7 is contracted into the outer tube 6, the driving device 8 does not work, the extension stroke is zero, the upper end surface (namely, the position A in fig. 1) of the support sleeve 14 is attached to the lower end surface (namely, the position B in fig. 1) of the outer tube 6, the support sleeve 14 and the outer tube 6 are relatively fixed, the support sleeve 14 cannot be pushed by spring force to move upwards, no acting force exists between the inclined surface of the press block 12 and the ball 13, a gap exists between the ball 13 and the outer surface of the inner tube 7, smooth movement of the inner and outer sleeves is ensured, and when the inner tube 7 moves downwards until the sealing cover plate 16 is contacted with the upper part of a tank. Next, the driving device 8 is turned on, as shown in fig. 2, the extension rod of the driving device 8 moves downward to push the pressing device consisting of the pressing plate 10, the pressing block sleeve 11 and the pressing block 12, the pressing device moves downward, and the supporting sleeve 14 does not descend in a short time under the action of the spring because the spring pressing force of the telescopic device 15 is greater than the gravity of the fastening device. The screw rod moves downwards along with the downward movement of the pressure device, the spring is stretched, the pressure is released, but after the release, the pressure of the spring is required to be ensured to be larger than the sum of the gravity of the support sleeve 14 and the gravity of the ball 13, the inclined surface of the pressing block 12 is contacted with the ball 13 and the ball 13 moves inwards in the radial direction, when the ball 13 is contacted with the inner pipe 7, the downward pressing force of the pressing block 12 generates an increased horizontal component force through the inclined surface to press the inner pipe 7, the friction force generated by the pressing force is larger than the downward pressure of the driving device 8, so that the pressing mechanism does not slip, the pressure of the driving device 8 is transmitted to the inner pipe 7 and a sealing cover 16 connected with the lower end through the pressing mechanism.
After loading is finished, the extension rod of the driving device 8 is retracted upwards, the extension rod drives the pressure device to move upwards, the pressing block sleeve 10 and the pressing block 12 move upwards, the inclined surface of the pressing block 12 has no pressing force on the ball 13, but the ball 13 does not separate from the inclined surface of the pressing block 12 and the inner tube 7 but only rolls and rises in the ball hole without influencing the movement of the inner tube 7 because the lower end of the supporting sleeve 14 is under the pressure action of the spring of the telescopic device 15. When the driving device 8 continues to move upwards, the upper end face (namely, the position A in the figure 1) of the support sleeve 14 is attached to the lower end face (namely, the position B in the figure 1) of the outer pipe 6, the support sleeve 14 and the outer pipe 6 are relatively fixed, the support sleeve 14 cannot be pushed upwards by spring force, the pressure device continues to move upwards, at the moment, the inclined face of the press block 12 and the ball 13 have no acting force (can not be in contact), a gap exists between the ball 7 and the outer surface of the inner pipe 7, the driving device 8 continues to move upwards to the end of the stroke, the inner pipe 7 drives the sealing cover 16 to ascend and retract into the outer pipe 6, and the truss crane pipe closed loading process.
Claims (10)
1. A pushing and pressing mechanism of a sealing cover of a loading arm closed loading vehicle is positioned above the sealing cover and comprises a driving device and a pressure device, wherein the driving device is connected with the pressure device; the telescopic vertical pipe of the crane pipe comprises an inner pipe and an outer pipe and is characterized in that the pushing mechanism further comprises a fastening device which is arranged outside the inner pipe; the pressure device is arranged outside the fastening device; the pressure device and the fastening device, and the fastening device and the inner pipe can move relatively; the pressure device provides the fastening device with a pushing force for fastening the inner tube and a pressure force for moving the inner tube relative to the outer tube.
2. The pushing mechanism of the sealing cover of the loading arm closed type loading arm as claimed in claim 1, wherein the pushing mechanism further comprises a telescopic device, and the telescopic device is connected with the fastening device and is positioned between the fastening device and the sealing cover.
3. The pushing mechanism of claim 2, wherein the retractable device is a compression spring assembly.
4. The pushing mechanism for the sealing cover of the oil filling riser closed loading according to claim 1, wherein the driving device is fixed on the outer tube.
5. The pushing and pressing mechanism for the sealing cover of the oil filling riser closed loading according to claim 1, wherein at least one of the contact surfaces of the pressure device and the fastening device is an inclined surface.
6. The pushing mechanism of the sealing cover of the oil filling riser closed loading according to claim 5, wherein the pressure device is a pressing block with an inclined surface, and the inclined surface of the pressing block faces the fastening device.
7. The pushing mechanism of the sealing cover of the oil filling riser closed loading crane according to claim 6, wherein the pressure device further comprises a pressure plate and a pressure block sleeve, the pressure block is arranged in the pressure block sleeve, the pressure block sleeve is fixed on the pressure plate, and the pressure plate is connected with the driving device.
8. The pushing and pressing mechanism for the sealing cover of the oil filling riser closed loading crane according to claim 1, wherein the fastening devices are multiple and evenly distributed along the circumference of the inner pipe.
9. The pushing and pressing mechanism for the sealing cover of the loading arm sealing device as claimed in claim 1, wherein the fastening means is a ring-shaped structure, and is sleeved outside the inner tube.
10. The pushing mechanism of the sealing cover of the oil filling riser closed loading according to claim 1, wherein the fastening device comprises a fastening piece and a supporting sleeve, and the fastening piece is installed in the supporting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199298.8U CN210286732U (en) | 2019-07-29 | 2019-07-29 | Pushing mechanism for sealed cover of closed loading crane for oil filling riser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199298.8U CN210286732U (en) | 2019-07-29 | 2019-07-29 | Pushing mechanism for sealed cover of closed loading crane for oil filling riser |
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|---|---|
| CN210286732U true CN210286732U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921199298.8U Active CN210286732U (en) | 2019-07-29 | 2019-07-29 | Pushing mechanism for sealed cover of closed loading crane for oil filling riser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240110A (en) * | 2019-07-29 | 2019-09-17 | 连云港天邦科技开发有限公司 | A kind of dipper crowding gear of oil filling riser closed loading sealing cover |
-
2019
- 2019-07-29 CN CN201921199298.8U patent/CN210286732U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240110A (en) * | 2019-07-29 | 2019-09-17 | 连云港天邦科技开发有限公司 | A kind of dipper crowding gear of oil filling riser closed loading sealing cover |
| CN110240110B (en) * | 2019-07-29 | 2023-12-05 | 连云港天邦科技开发有限公司 | Pressing mechanism of sealing cover for sealing loading crane pipe |
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