CN111546284A - Combined manhole tool and internal pressure type manhole mounting method - Google Patents
Combined manhole tool and internal pressure type manhole mounting method Download PDFInfo
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- CN111546284A CN111546284A CN202010450094.8A CN202010450094A CN111546284A CN 111546284 A CN111546284 A CN 111546284A CN 202010450094 A CN202010450094 A CN 202010450094A CN 111546284 A CN111546284 A CN 111546284A
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- manhole
- manhole cover
- positioning
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- guide rod
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
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Abstract
The invention discloses a combined manhole tool, which is used for installing manhole covers with at least 3 guide sleeves distributed on the peripheral surface at equal intervals in an annular manner, and comprises a positioning cylinder, a supporting plate frame, a positioning seat and a guide rod; the positioning seat is used for positioning through the positioning cylinder and is installed on the manhole joint edge; the guide rod is used for penetrating into the guide hole of the guide sleeve and providing support for the manhole cover, so that the manhole cover can slide along the guide rod; two ends of the guide rod can be respectively supported and positioned by the positioning seat and the supporting base on the bracket plate. The invention relates to an internal pressure type manhole mounting method, which adopts a combined type manual tool to mount a manhole cover on a manhole connecting edge. The combined manhole tool gets rid of dependence on a long lever and a travelling crane, can be assembled and installed by a single person, and is high in installation efficiency and low in installation cost.
Description
Technical Field
The invention relates to the technical field of manhole installation, in particular to a manhole tool and a manhole installation method.
Background
In petrochemical and metallurgy, there are many high-pressure vessels, and an internal pressure type high-pressure manhole is often adopted, and the higher the pressure is, the more reliable the sealing is. The manhole is often used on a horizontal vessel or a vertical vessel, but in the manufacturing stage, the manhole is generally assembled by a horizontal method. In the original manhole structure, a connecting piece is arranged on the back side of a manhole cover, the manhole cover is often not easy to assemble under the action of self weight, and the installation process is shown by referring to fig. 1: the position is changed from the position to the vertical state from the state 1 to the state 2 under the action of external force, a long lever is needed to provide support to prevent the position from returning to the state 1 under the action of gravity in the state 3, a weight is needed to balance the weight of the manhole cover, then the lever is provided with pulling force and a fulcrum through a travelling crane, and at least two persons are needed to cooperatively install the manhole cover, so that the manhole cover is very inconvenient, low in installation efficiency and high in installation cost.
Disclosure of Invention
Aiming at the technical defects, the invention provides a combined manhole tool, which solves the technical problem that the manhole tool cannot be installed by a single person and improves the installation efficiency.
In order to solve the technical problem, the invention provides a technical scheme as follows: a combined manhole tool is used for installing a manhole cover, wherein at least 3 guide sleeves are annularly distributed on the outer peripheral surface of the manhole cover at equal intervals, the axis of each guide sleeve is parallel to the axis of the manhole cover, and each guide sleeve comprises a positioning cylinder with the outer diameter equal to that of the manhole cover; at least 3 positioning sleeves are annularly distributed on the outer peripheral surface of the positioning cylinder at equal intervals, and the axes of the positioning sleeves are parallel to the axis of the positioning cylinder;
the bracket plate is provided with connecting rods and bracket bases, the number of the bracket bases is equal to that of the positioning sleeves, and the bracket bases are annularly distributed on a virtual circle with the diameter equal to the outer diameter of the manhole cover at equal intervals, so that each bracket base can be coaxial with the corresponding positioning sleeve; the adjacent support bases are fixedly connected through a connecting rod; the support base is also provided with a hanging piece for hanging;
the number of the positioning seats and the number of the guide rods are equal to that of the positioning sleeves; the positioning seat is used for positioning through the positioning cylinder and is installed on the manhole joint edge to form equal-interval annular distribution which is the same as that of the positioning sleeve on the positioning cylinder; the guide rod is used for penetrating into the guide hole of the guide sleeve and can form clearance fit with the guide hole, so that the manhole cover can slide along the guide rod; two ends of the guide rod can be supported and positioned through the positioning seat and the support base respectively.
Preferably, the positioning seat and the support base are internally provided with axial holes for inserting the guide rods and set screws for locking the guide rods; the guide rod is provided with an annular groove for clamping and connecting the set screw.
Preferably, the inner hole of the positioning cylinder can be in transition fit with a spigot boss in the center of the end face of the manhole cover, so that the manhole cover and the positioning cylinder are coaxial, and the guide sleeve can conveniently obtain the same distribution form as that of the positioning sleeve on the positioning cylinder.
The invention provides an internal pressure type manhole installation method, which adopts the combined manhole tool and comprises the following steps:
step 1: the manhole cover is hung and installed in the barrel body, so that the axis of the manhole cover is collinear with the axis of the barrel body;
step 2: acquiring a spherical end socket provided with a manhole connecting edge, wherein a concave spigot with the diameter basically the same as the outer diameter of the manhole cover is arranged on the end face of the manhole connecting edge for mounting the manhole cover; inserting the positioning cylinder into the concave spigot axially, inserting the positioning pin into the positioning sleeve, positioning the mounting position of the positioning seat through the positioning pin, and then fixedly mounting the positioning seat on the end face of the manhole joint edge to enable the positioning seat to obtain the same distribution form as the positioning sleeve;
and step 3: butting the spherical sealing head provided with the positioning seat on the cylinder body; suspending the bracket plate behind the manhole cover, and enabling the bracket plate to be coaxial with the manhole cover;
and 4, step 4: installing a guide rod, wherein the guide rod is sleeved in a guide sleeve of the manhole cover in a penetrating manner, and two ends of the guide rod are respectively supported and positioned through a positioning seat and a supporting base; the hanging state of the manhole cover is released, and the manhole cover is supported by the guide rod;
and 5: and sliding the manhole cover along the guide rod to enable the manhole cover to reach the manhole joint edge, and connecting the manhole cover to the manhole joint edge to complete the manhole installation.
Compared with the prior art, the invention has the advantages that:
1. the combined manhole tool provides support for the manhole cover through the guide rod, so that the manhole cover is kept vertical in the installation process, and meanwhile, the combined manhole tool plays a role in guiding the sliding of the manhole cover and enables the manhole cover to slide in the horizontal direction. The guide rod enables the installation of the manhole cover to get rid of the dependence on the long lever and the travelling crane, the assembly of the combined manhole tool and the installation of the manhole cover can be completed by a single person, the installation efficiency is high, and the installation cost is low.
2. Through axial hole and holding screw, realized the dismantlement of guide bar and connected for modular manhole frock reuse is convenient for adjust the axis of guide bar in the installation simultaneously. In addition, after the fastening screw is clamped into the annular groove, the guide rod can be prevented from sliding from the axial hole.
3. The annular distribution form of the positioning sleeve on the positioning cylinder is used as a distribution reference, so that the guide sleeve on the manhole cover, the positioning seat on the manhole joint edge and the support base on the bracket plate are guaranteed to have a uniform distribution form, and the three shafts of the manhole cover, the manhole joint edge and the bracket plate are guaranteed to be collinear.
4. The diameter of the guide rod is smaller than the diameter of the axial hole and the diameter of the guide hole on the guide sleeve, so that the guide sleeve on the manhole cover can slide smoothly on the guide rod.
Drawings
FIG. 1 is a schematic view of a prior art manhole installation principle;
FIG. 2 is a schematic view of the man-hole installation principle in this embodiment;
FIG. 3 is a schematic view of the suspension of the artificial cap within the barrel;
figure 4 is an exploded schematic view of a modular manhole tool;
FIG. 5 is a schematic view of the structure of the carrier plate;
FIG. 6 is a schematic view of the positioning cylinder;
FIG. 7 is a schematic view of the construction of a manhole cover;
FIG. 8 is a schematic view of a guide sleeve on the positioning cylinder positioning manhole cover;
FIG. 9 is a schematic view of the locating cartridge locating bracket plate mounting base;
FIG. 10 is a schematic view of a locating socket on the locating manhole attachment of the locating cylinder;
figure 11 is a flow chart for manhole installation.
Detailed Description
Referring to fig. 2 to 7, a combined manhole tool is used for installing a manhole cover 1, on which at least 3 guide sleeves 101 are annularly distributed at equal intervals on the outer peripheral surface, wherein the axis of each guide sleeve 101 is parallel to the axis of the manhole cover 1, and each combined manhole tool comprises a positioning cylinder 9 with an outer diameter equal to that of the manhole cover 1; at least 3 positioning sleeves 901 are annularly distributed on the peripheral surface of the positioning cylinder 9 at equal intervals, and the axial lines of the positioning sleeves 901 are parallel to the axial line of the positioning cylinder 9;
the manhole cover further comprises a bracket plate 2 provided with connecting rods 202 and base supports 201, the number of the base supports 201 is equal to that of the positioning sleeves 901, and the base supports 201 are annularly distributed on a virtual circle with the diameter equal to the outer diameter of the manhole cover 1 at equal intervals, so that each base support 201 can be coaxial with the corresponding positioning sleeve 901; the adjacent support bases 201 are fixedly connected through a connecting rod 202; a hanging piece for hanging is further arranged on the supporting base 201; the hanging piece is a lifting bolt 203 in threaded connection with the base 201.
The number of the positioning seats 3 is equal to that of the positioning sleeves 901; the positioning seat 3 is positioned by the positioning cylinder 9 and is installed on the manhole joint edge 7 to form equal-interval annular distribution which is the same as the positioning sleeve 901 on the positioning cylinder 9; the guide rod 4 is used for penetrating into a guide hole of the guide sleeve 101 and can form clearance fit with the guide hole, so that the manhole cover 1 can slide along the guide rod 4; two ends of the guide rod 4 can be supported and positioned by the positioning seat 3 and the support base 201 respectively.
In order to facilitate carrying out reuse to combination formula manhole frock, the connection can be dismantled in the guide bar 4 adoption, and specific scheme is as follows: axial holes for inserting the guide rods 4 and set screws for locking the guide rods 4 are formed in the positioning seat 3 and the support base 201; the guide rod 4 is provided with an annular groove for clamping a set screw, and the guide rod can be fixed and prevented from axial displacement after the set screw is clamped.
The annular distribution form of the locating sleeve 901 on the locating cylinder 9 is used as a distribution reference, so that the guide sleeve 101 on the manhole cover 1, the locating seat 3 on the manhole flange 7 and the support base 201 on the bracket plate 2 are ensured to have a uniform distribution form, and the three axes of the manhole cover 1, the manhole flange 7 and the bracket plate 2 are ensured to be collinear. The following describes how the positioning cylinders 9 deliver the distribution pattern to the manhole cover 1, the manhole rim 7 and the pallet 2, respectively.
Referring to fig. 8, when the guide sleeve 101 is processed on the manhole cover 1, the inner hole 902 of the positioning cylinder 9 is in transition fit with the spigot boss 103 at the center of the end face of the manhole cover 1, so that the manhole cover 1 and the positioning cylinder 9 are coaxial, then the positioning pin shaft is inserted into the positioning sleeve 901, the guide sleeve 101 is sleeved on the positioning pin shaft for welding, and the outer diameter of the manhole cover 1 is equal to the outer diameter of the positioning cylinder 9, so that the guide sleeve 101 on the manhole cover 1 has the same distribution form as the positioning sleeve 901 on the positioning cylinder 9.
Referring to fig. 9, when manufacturing the carrier plate 2, the positioning pin is inserted into the positioning sleeve 901 of the positioning cylinder 9, the supporting base 201 is then sleeved on the positioning pin, the supporting base 201 is formed in the same annular distribution as the positioning sleeve, and finally the supporting base 201 is welded and fixed by the connecting rod 202.
Referring to fig. 10, the manhole flange 7 is provided with a female spigot 701 having substantially the same outer diameter as the manhole cover 1 on the end surface for mounting the manhole cover 1; the positioning cylinder 9 is axially inserted into the female spigot 701, the positioning pin is inserted into the positioning sleeve 901, then the mounting position of the positioning seat 3 is positioned by the positioning pin, and then the positioning seat 3 is fixedly mounted (welded) on the end face of the manhole flange 7, so that the positioning seat 3 obtains the same distribution form as the positioning sleeve 901.
Referring to fig. 11, an internal pressure manhole installing method using the combined manhole tool of the present embodiment includes the following steps:
step 1: the manhole cover 1 is hung and installed in the barrel body 5, so that the axis of the manhole cover 1 is collinear with the axis of the barrel body 5; the guide sleeve 101 is connected with a lifting bolt in a threaded manner, the guide sleeve 101 is suspended in the barrel 5 through a double-head adjusting bolt 8 with a hook, and the axial position of the manhole cover 1 is adjusted by adjusting the telescopic length of the double-head adjusting bolt, so that the axial line of the manhole cover 1 is collinear with the axial line of the barrel 5.
Step 2: obtaining a spherical seal head 6 provided with a manhole connecting edge 7, wherein a concave spigot 701 with the diameter basically the same as that of the outer diameter of the manhole cover 1 is arranged on the end surface of the manhole connecting edge 7 for mounting the manhole cover 1; the positioning cylinder 9 is axially inserted into the female spigot 701, the positioning pin is inserted into the positioning sleeve 901, then the mounting position of the positioning seat 3 is positioned by the positioning pin, and then the positioning seat 3 is fixedly mounted on the end face of the manhole flange 7, so that the positioning seat 3 obtains the same distribution form as the positioning sleeve 901.
And step 3: butting (welding) the spherical end socket provided with the positioning seat 3 on the cylinder body 5; suspending the bracket plate 2 behind the manhole cover 1, and enabling the bracket plate 2 to be coaxial with the manhole cover 1; the bracket plate 2 is suspended in the cylinder 5 through a double-headed adjusting bolt with a hook, and the axial position of the bracket plate 2 is adjusted by adjusting the telescopic length of the double-headed adjusting bolt, so that the axial line of the bracket plate 2 is collinear with the axial line of the cylinder 5.
And 4, step 4: installing a guide rod 4, wherein the guide rod 4 is sleeved in a guide sleeve 101 of the manhole cover 1 in a penetrating manner, and two ends of the guide rod 4 are respectively supported and positioned by a positioning seat 3 and a support base 201; the hanging state of the manhole cover 1 is released, and the manhole cover 1 is supported by the guide rod 4; before sliding the manhole cover 1 along the guide bar 4, the stud adjustment bolts are removed and one stud adjustment bolt is replaced with a chain; the center of the manhole cover 1 is in threaded connection with a lifting bolt, and a chain is hung on the lifting bolt to drag the manhole cover 1, so that the manhole cover 1 slides along the guide rod 4.
And 5: and sliding the manhole cover 1 along the guide rod 4 to make the manhole cover 1 reach the manhole connecting edge 7, connecting the manhole cover 1 to the manhole connecting edge 7, and completing the manhole installation. The manhole cover 1 is used for connecting the terminal surface central authorities of manhole flange 7 and is equipped with the tang boss, cup joints the sealing washer on the tang boss, and the manhole cover 1 docks the back with manhole flange 7, and the sealing washer holding is in the concave tang of manhole flange 7 to make manhole cover 1 and manhole flange 7 form sealing connection. In order to facilitate the smooth entering of the spigot boss of the manhole cover into the concave spigot of the manhole joint edge, the spigot boss and the concave spigot are respectively subjected to end face chamfering.
Claims (8)
1. The utility model provides a modular manhole frock for the installation outer peripheral face equidistant annular distributes has the manhole cover of 3 at least uide bushings, and the axis of uide bushing is parallel with the axis of manhole cover, its characterized in that: comprises a positioning cylinder with the outer diameter equal to that of the manhole cover; at least 3 positioning sleeves are annularly distributed on the outer peripheral surface of the positioning cylinder at equal intervals, and the axes of the positioning sleeves are parallel to the axis of the positioning cylinder;
the bracket plate is provided with connecting rods and bracket bases, the number of the bracket bases is equal to that of the positioning sleeves, and the bracket bases are annularly distributed on a virtual circle with the diameter equal to the outer diameter of the manhole cover at equal intervals, so that each bracket base can be coaxial with the corresponding positioning sleeve; the adjacent support bases are fixedly connected through a connecting rod; the support base is also provided with a hanging piece for hanging;
the number of the positioning seats and the number of the guide rods are equal to that of the positioning sleeves; the positioning seat is used for positioning through the positioning cylinder and is installed on the manhole joint edge to form equal-interval annular distribution which is the same as that of the positioning sleeve on the positioning cylinder; the guide rod is used for penetrating into the guide hole of the guide sleeve and can form clearance fit with the guide hole, so that the manhole cover can slide along the guide rod; two ends of the guide rod can be supported and positioned through the positioning seat and the support base respectively.
2. The combination manhole tool of claim 1, wherein: axial holes for inserting the guide rods and set screws for locking the guide rods are arranged in the positioning seat and the support base; the guide rod is provided with an annular groove for clamping and connecting the set screw.
3. The combination manhole tool of claim 1, wherein: the hanging piece is a lifting bolt in threaded connection with the support base.
4. The combination manhole tool of claim 1, wherein: the inner hole of the positioning cylinder can be in transition fit with the spigot boss in the center of the end face of the manhole cover, so that the manhole cover and the positioning cylinder are coaxial, and the guide sleeve can conveniently obtain the same distribution form on the manhole cover as the positioning sleeve on the positioning cylinder.
5. An internal pressure type manhole installation method is characterized in that: a modular manhole assembly as claimed in claim 1, and comprising the steps of:
step 1: the manhole cover is hung and installed in the barrel body, so that the axis of the manhole cover is collinear with the axis of the barrel body;
step 2: acquiring a spherical end socket provided with a manhole connecting edge, wherein a concave spigot with the diameter basically the same as the outer diameter of the manhole cover is arranged on the end face of the manhole connecting edge for mounting the manhole cover; inserting the positioning cylinder into the concave spigot axially, inserting the positioning pin into the positioning sleeve, positioning the mounting position of the positioning seat through the positioning pin, and then fixedly mounting the positioning seat on the end face of the manhole joint edge to enable the positioning seat to obtain the same distribution form as the positioning sleeve;
and step 3: butting the spherical sealing head provided with the positioning seat on the cylinder body; suspending the bracket plate behind the manhole cover, and enabling the bracket plate to be coaxial with the manhole cover;
and 4, step 4: installing a guide rod, wherein the guide rod is sleeved in a guide sleeve of the manhole cover in a penetrating manner, and two ends of the guide rod are respectively supported and positioned through a positioning seat and a supporting base; the hanging state of the manhole cover is released, and the manhole cover is supported by the guide rod;
and 5: and sliding the manhole cover along the guide rod to enable the manhole cover to reach the manhole joint edge, and connecting the manhole cover to the manhole joint edge to complete the manhole installation.
6. The method of installing an internally pressed manhole according to claim 5, wherein: the guide sleeve is in threaded connection with a lifting bolt, the guide sleeve is suspended in the barrel through a double-head adjusting bolt with a hook, and the axis position of the manhole cover is adjusted by adjusting the telescopic length of the double-head adjusting bolt, so that the axis of the manhole cover is collinear with the axis of the barrel.
7. The method of installing an internally pressed manhole according to claim 5, wherein: before sliding the manhole cover along the guide bar, removing the stud adjustment bolts and replacing one stud adjustment bolt with a chain; the center of the manhole cover is in threaded connection with a lifting bolt, and a chain is hung on the lifting bolt to drag the manhole cover so that the manhole cover slides along the guide rod.
8. The method of installing an internally pressed manhole according to claim 5, wherein: the manhole cover is used for connecting the terminal surface central authorities that the manhole connects the edge and is equipped with the tang boss, cup joints the sealing washer on the tang boss, and the manhole cover connects the edge butt joint back with the manhole, and the sealing washer holding is in the concave tang of manhole flange to make manhole cover and manhole flange form sealing connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450094.8A CN111546284B (en) | 2020-05-25 | 2020-05-25 | Combined manhole tool and internal pressure type manhole mounting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010450094.8A CN111546284B (en) | 2020-05-25 | 2020-05-25 | Combined manhole tool and internal pressure type manhole mounting method |
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| Publication Number | Publication Date |
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| CN111546284A true CN111546284A (en) | 2020-08-18 |
| CN111546284B CN111546284B (en) | 2021-06-22 |
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| US6085935A (en) * | 1998-08-10 | 2000-07-11 | Alliance Laundry Systems Llc | Pressure vessel door operating apparatus |
| JP2004035034A (en) * | 2002-07-02 | 2004-02-05 | Sankyu Inc | Suspension tool for temporary ladder |
| CN201493808U (en) * | 2009-08-14 | 2010-06-02 | 四川川润股份有限公司 | Handling device for internal pressure self-tightening sealed oval manhole cover plate |
| CN203189713U (en) * | 2013-04-25 | 2013-09-11 | 甘肃蓝科石化高新装备股份有限公司 | High pressure vessel self-sealing structure |
| CN204660496U (en) * | 2015-03-18 | 2015-09-23 | 中油辽河工程有限公司 | A kind of built-in manhole on high pressure vessel |
| CN206539697U (en) * | 2017-02-22 | 2017-10-03 | 东方电气集团东方锅炉股份有限公司 | The protection device of swing-in self-tightening sealing manhole structure |
| CN206568077U (en) * | 2017-03-14 | 2017-10-20 | 银川利智信知识产权咨询服务有限公司 | The specific purpose tool dismounted for high-pressure self-sealing manhole |
| EP3019666B1 (en) * | 2013-07-12 | 2017-11-15 | Ej Usa, Inc | Manhole cover |
| CN109519541A (en) * | 2018-12-10 | 2019-03-26 | 航天晨光股份有限公司 | A kind of internal high-voltage manhole device and its open and close operating method |
| CN209190654U (en) * | 2018-12-18 | 2019-08-02 | 哈尔滨锅炉厂有限责任公司 | A kind of heat exchanger provision for disengagement by manhole cover |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6085935A (en) * | 1998-08-10 | 2000-07-11 | Alliance Laundry Systems Llc | Pressure vessel door operating apparatus |
| JP2004035034A (en) * | 2002-07-02 | 2004-02-05 | Sankyu Inc | Suspension tool for temporary ladder |
| CN201493808U (en) * | 2009-08-14 | 2010-06-02 | 四川川润股份有限公司 | Handling device for internal pressure self-tightening sealed oval manhole cover plate |
| CN203189713U (en) * | 2013-04-25 | 2013-09-11 | 甘肃蓝科石化高新装备股份有限公司 | High pressure vessel self-sealing structure |
| EP3019666B1 (en) * | 2013-07-12 | 2017-11-15 | Ej Usa, Inc | Manhole cover |
| CN204660496U (en) * | 2015-03-18 | 2015-09-23 | 中油辽河工程有限公司 | A kind of built-in manhole on high pressure vessel |
| CN206539697U (en) * | 2017-02-22 | 2017-10-03 | 东方电气集团东方锅炉股份有限公司 | The protection device of swing-in self-tightening sealing manhole structure |
| CN206568077U (en) * | 2017-03-14 | 2017-10-20 | 银川利智信知识产权咨询服务有限公司 | The specific purpose tool dismounted for high-pressure self-sealing manhole |
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| CN209190654U (en) * | 2018-12-18 | 2019-08-02 | 哈尔滨锅炉厂有限责任公司 | A kind of heat exchanger provision for disengagement by manhole cover |
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| CN111546284B (en) | 2021-06-22 |
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