CN206552611U - A kind of cover plate for manhole - Google Patents
A kind of cover plate for manhole Download PDFInfo
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- CN206552611U CN206552611U CN201720135202.6U CN201720135202U CN206552611U CN 206552611 U CN206552611 U CN 206552611U CN 201720135202 U CN201720135202 U CN 201720135202U CN 206552611 U CN206552611 U CN 206552611U
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- manhole
- cover plate
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- oil
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Abstract
The utility model discloses a kind of cover plate for manhole, belong to cleaning oil tank field.The cover plate for manhole cover plate for manhole includes being vertically arranged with strip through-hole on plate body, plate body.Cover plate for manhole also includes：Coordinate along the slide plate of the lateral wall longitudinal sliding motion of plate body, and between slide plate and plate body for dynamic sealing.The manhole for accommodating oil pumping pipeline is provided with slide plate, manhole is connected with strip through-hole.Cover plate for manhole also includes：Closeouts for opening or blocking manhole.Oil pick-up tube linear sealing is fixed in manhole, and stretched into by strip through-hole in oil storage tank, slide plate is slided up and down, you can drives oil pumping pipeline to move up and down by slide plate, realizes the adjustment up and down of oil pumping line end pump orifice position.The cover plate for manhole that the utility model is provided is conveniently adjusted the height of oil pumping pipeline and adjusting range is larger, easy to use, suitable for large-scale promotion application.
Description
Technical field
The utility model is related to cleaning oil tank field, more particularly to a kind of cover plate for manhole.
Background technology
Oil storage tank is the container for storing oil, and after a period of time, the impurity in crude oil will be deposited on tank bottom and tank
On wall, oil storage tank available capacity is reduced, influence its service efficiency, therefore oil storage tank needs periodically to be cleaned, to remove storage
Sludge in oil tank.During cleaning, first have to open the cover plate for manhole on oil storage pot sidewall, oil pumping pipeline is stretched into manhole, taken out
Sucking pump is extracted out the crude oil in oil storage tank by pipeline of pumping, and then carries out mechanical cleaning to oil storage tank again.But cover plate for manhole is beaten
After opening, there is larger space between oil pumping pipeline and manhole, cause the gas in oil storage tank to leak, influence the health of operating personnel
And safety.Therefore it provides a kind of can avoid the cover plate for manhole that gas is leaked in oil storage tank from being very necessary.
Prior art can avoid the cover plate for manhole that gas is leaked in oil storage tank, the middle part of the cover plate for manhole there is provided a kind of
It is provided with around through hole, through hole and is provided with elastic seal ring, the pipeline that will pump, which is stretched into and sealed, is fixed in the through hole, without beating
The suction of crude oil can be carried out by opening cover plate for manhole, it is to avoid the leakage of gas in oil storage tank.Due to the crude oil in oil storage tank actually
It is oil water mixture, and oil reservoir can be floated over above water layer, only need to aspirate oil reservoir when extracting crude oil out, with the original to extraction
Oil carries out later use, and water layer need not extract and can be directly used for the cleaning of oil storage tank out.When oil reservoir glue is thin in oil storage tank, need
The height of oil pumping pipeline lower end pump orifice is suitably adjusted, operating personnel are by by the oil pick-up tube in cover plate for manhole through hole
Line is suitably lifted or forced down, and to avoid the position of pump orifice too high (i.e. pump orifice apart from crude oil liquid level too far), causes oil pick-up tube
Line sucks excessive air, and causes suction pump vaccuum phenomenon, or avoids the position of pump orifice too low (i.e. pump orifice stretches into profit circle
Below face), cause oil pumping pipeline suction excess moisture, the later use of crude oil is extracted in influence out.
Designer has found that prior art at least has following technical problem：
The cover plate for manhole auxiliary oil pumping pipeline suction crude oil provided using prior art, can only be by suitably lifting or forcing down
Oil pumping pipeline is adjusted come the height to oil pumping pipeline lower end pump orifice, and between the through hole on pipeline and cover plate for manhole of pumping
Elastic seal ring thickness is smaller, finite elastic, the scope that the pipeline that causes to pump is lifted or forced down is smaller, in turn results in oil pick-up tube
The adjusting range of line lower end pump orifice position is also smaller, it is difficult to ensure the pumped mass of oil pumping pipeline, and influence is extracted out after crude oil
It is continuous to use.
Utility model content
The utility model embodiment technical problem to be solved is to be applied to cleaning oil tank mistake there is provided one kind
Journey, and oil pumping pipeline height adjustable and the larger cover plate for manhole of adjusting range, concrete technical scheme are as follows：
The utility model embodiment provides a kind of cover plate for manhole, and the cover plate for manhole is included on plate body, the plate body along vertical
To being provided with strip through-hole.The cover plate for manhole also includes：Along the slide plate of the lateral wall longitudinal sliding motion of the plate body, and the cunning
Coordinate between plate and the plate body for dynamic sealing.The manhole for accommodating oil pumping pipeline is provided with the slide plate, it is described
Manhole is connected with the strip through-hole.The cover plate for manhole also includes：For opening or blocking the manhole
Closeouts.
Specifically, preferably, being provided with multiple bolts hole on the cover plate for manhole, multiple bolts hole are along the plate
The periphery distribution of body.
Specifically, preferably, being provided with two guide rails on the lateral wall of the plate body, the relative side of two guide rails
A longitudinally guiding groove is each provided with wall, the left and right side of the slide plate is respectively slidably embedded in two longitudinally guidings
In groove.
Specifically, preferably, the cover plate for manhole also includes passing through gear shaft between two gears, two gears
Connection.The two ends fixed cover of the gear shaft is equipped with rolling bearing, and the rolling bearing outer cover is provided with bearing block, the bearing
Seat is located on the lateral wall of the plate body, and positioned at the top of the guide rail.It is vertically arranged with the lateral wall of the slide plate
Two groups of teeth bar, two gears are meshed with rack described in two groups respectively.Gear is provided with the lateral wall of the bearing block
Locking mechanism, for making the gear in precalculated position remains stationary.
Specifically, preferably, the gear is ratchet, the gear locking mechanism is ratchet.Outside the bearing block
Connecting rod is provided with the wall of side, the connection end of the ratchet is rotatably connected with the connecting rod, when the pinion rotation, the spine
Periphery of the pawl along the gear is slided, and when the gear stops operating, the ratchet is fallen into the teeth groove of the gear.
Specifically, preferably, the cover plate for manhole also includes handle, one end of the handle and the gear shaft is removable
Unload connection.
Specifically, preferably, the handle is threadedly coupled with the gear shaft.
Specifically, preferably, one end of the handle is provided with recessed slot, one end of the gear shaft is provided with
The plug being adapted with the slot, makes the handle be detachably connected with the gear shaft.
Specifically, preferably, being provided with least one observation through hole on the plate body of the cover plate for manhole, the observation is led to
Hole is blocked by glass.
The beneficial effect brought of technical scheme that the utility model embodiment is provided is：
The cover plate for manhole that the utility model embodiment is provided, by setting longitudinal strip through-hole on plate body, and in plate
Set on the lateral wall of body can longitudinal sliding motion slide plate, coordinate between slide plate and plate body dynamic sealing, while being provided with slide plate
Manhole, manhole is connected with strip through-hole, and longitudinal sliding motion slide plate can be connected to manhole with strip through-hole
Position be adjusted.In use, oil pick-up tube linear sealing is fixed in manhole, and oil storage tank is stretched into by strip through-hole
In, longitudinal sliding motion slide plate, you can drive oil pumping pipeline to move up and down by slide plate realizes oil pumping line end pump orifice position
Adjust up and down.And only lifting or forcing down and adjust pump orifice by pipeline of pumping in the prior art, by contrast, this practicality is new
Type embodiment provide cover plate for manhole can make oil pick-up tube line is carried out in the length range of strip through-hole above and below adjustment, expand
The adjusting range of pump orifice, and make adjustment process simpler convenient.It can be seen that, the cover plate for manhole that the utility model embodiment is provided
It is conveniently adjusted the height of oil pumping pipeline and adjusting range is larger, easy to use, suitable for large-scale promotion application.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1-1 is the front view for the cover plate for manhole that the utility model embodiment is provided；
Fig. 1-2 is the left view for the cover plate for manhole that the utility model embodiment is provided；
Fig. 2 is the structural representation of the plate body for the cover plate for manhole that the utility model embodiment is provided.
Reference is represented respectively：
1 plate body,
101 strip through-holes,
102 bolts hole,
103 observation through holes,
2 slide plates,
201 manholes,
202 racks,
3 guide rails,
4 gears,
5 gear shafts,
6 bearing blocks,
7 bearings,
8 handles,
9 oil pumping pipelines,
901 pumping stages,
9011 pump orifices,
902 elbows,
903 linkage sections.
Embodiment
, below will be to the utility model embodiment party to make the purpose of this utility model, technical scheme and advantage clearer
Formula is described in further detail.
The utility model embodiment provides a kind of cover plate for manhole, as shown in Figure 2, and the cover plate for manhole includes plate body 1, plate
Strip through-hole 101 is vertically arranged with body 1.As shown in accompanying drawing 1-1 and accompanying drawing 1-2, the cover plate for manhole also includes：Along plate body 1
Lateral wall longitudinal sliding motion slide plate 2, and between slide plate 2 and plate body 1 for dynamic sealing coordinate.It is provided with slide plate 2 for accommodating
The manhole 201 of oil pumping pipeline 9, manhole 201 is connected with strip through-hole 101.The cover plate for manhole also includes：For beating
Open or block the closeouts of manhole 201.
The operation principle for the cover plate for manhole that the utility model embodiment is provided is as follows：
Oil pumping pipeline 9 is stretched into and is fixed in the manhole 201 of slide plate 2, strip through-hole 101 is then passed through and stretches into oil storage
In tank, slide plate 2 is set to drive oil pumping pipeline 9 to move up and down.When the pump orifice 9011 of oil pumping pipeline 9 lower end is apart from crude oil liquid level
Farther out, i.e. when the position of pump orifice 9011 is too high, slide plate 2 is moved down, oil pumping pipeline 9 and pump orifice 9011 is moved down,
Close to crude oil liquid level, it is to avoid the suction air of pump orifice 9011 is excessive, causes suction pump vaccuum phenomenon occur, it is ensured that suction pump is just
Often use.When the pump orifice 9011 of oil pumping pipeline 9 lower end stretches into below oil-water interfaces, i.e. when the position of pump orifice 9011 is too low,
Slide plate 2 is moved up, oil pumping pipeline 9 and pump orifice 9011 is moved up, leaves water layer, it is to avoid oil pumping pipeline 9 is sucked excessively
Moisture, it is ensured that extract the later use of crude oil out.After oil pumping process terminates, oil pumping pipeline 9 is pulled down from manhole 201, used
Closeouts block manhole 201, oil storage tank is recovered sealing again, to carry out the operation such as follow-up cleaning.
The cover plate for manhole that the utility model embodiment is provided, by the way that longitudinal strip through-hole 101 will be set on plate body 1, and
Set on the lateral wall of plate body 1 can longitudinal sliding motion slide plate 2, coordinate between slide plate 2 and plate body 1 dynamic sealing, while slide plate 2
On be provided with manhole 201, manhole 201 is connected with strip through-hole 101, and longitudinal sliding motion slide plate 2 can be logical to circle
The position that hole 201 is connected with strip through-hole 101 is adjusted.In use, the oil pumping sealing of pipeline 9 is fixed on into manhole
In 201, and stretched into by strip through-hole 101 in oil storage tank, longitudinal sliding motion slide plate 2, you can oil pumping pipeline 9 is driven by slide plate 2
Move up and down, realize the adjustment up and down of 9011 positions of oil pumping pipeline 9 end aspiration mouthful.And only pass through pipeline of pumping in the prior art
9 lift or force down to adjust pump orifice 9011, by contrast, and the cover plate for manhole that the utility model embodiment is provided can make to take out
The pump orifice 9011 of the lower end of oil pipeline 9 is adjusted above and below being carried out in the length range of strip through-hole 101, expands pump orifice 9011
Adjusting range, and make adjustment process simpler convenient.It can be seen that, the cover plate for manhole that the utility model embodiment is provided is easy to adjust
It is whole oil pumping pipeline 9 height and adjusting range is larger, easy to use, suitable for large-scale promotion application.
As shown in Figure 2, the cover plate for manhole that the utility model embodiment is provided is entered on the basis of existing cover plate for manhole
Row is improved, bolt hole 102 is remained on the plate body 1 of cover plate for manhole, in order to installation and fixation of the cover plate for manhole in manhole.
Specifically, multiple bolts hole 102 are provided with cover plate for manhole, periphery of multiple bolts hole 102 along cover plate for manhole plate body 1 uniformly divides
Cloth, fixing bolt is inserted in bolt hole 102, and is fixed by nut, you can consolidate the edge of cover plate for manhole and manhole
Fixed connection, keeps the stabilization of cover plate for manhole.
In addition, for the ease of fixation of the oil pumping pipeline 9 in manhole 201, the length of strip through-hole 101 on plate body 1
The diameter of manhole 201 is naturally larger than, the width of strip through-hole 101 should be greater than the diameter of manhole 201, in order to pump
Pipeline 9 smoothly insertion manhole 201 and strip through-hole 101, and ensure that manhole 201 and oil pumping pipeline 9 are logical in bar shaped
Adjustment in the length range of hole 101.
The outside of cover plate for manhole plate body 1 is provided with the slide plate 2 that can slide up and down, specifically, is set on the lateral wall of plate body 1
Have and a longitudinally guiding groove is each provided with two guide rails 3, the relative side wall of two guide rails 3, the left and right side of slide plate 2 respectively can
It is slidingly engaged in two longitudinally guiding grooves, to realize sliding up and down for slide plate 2.Slide plate 2 is arranged on the outer of cover plate for manhole plate body 1
Side, by cover plate for manhole be arranged on manhole in after, it is necessary to adjust oil pumping pipeline 9 height when, without opening cover plate for manhole, directly
The adjustment that the height of 9 lower end pump orifice of oil pick-up tube line 9011 can be achieved in slide plate 2 is slided up and down, it is simple to operate, convenient.
As shown in accompanying drawing 1-1, fixed in place after being adjusted for the ease of slide plate about 2, cover plate for manhole also includes
Connected between two gears 4, two gears 4 by gear shaft 5, the two ends fixed cover of gear shaft 5 is equipped with rolling bearing 7, rolls
The outer cover of bearing 7 is provided with bearing block 6, and bearing block 6 is located on the lateral wall of plate body 1, and positioned at the top of guide rail 3, passes through bearing
Gear shaft 5 is fixed on the outside of plate body 1 and ensures the rotation of gear shaft 5 by seat 6 and rolling bearing 7.Meanwhile, the outside of slide plate 2
Two groups of teeth bar 202 is vertically arranged with wall, two gears 4 are meshed with two groups of teeth bar 202 respectively, when gear 4 is rotated, tooth
Wheel 4 drives rack 202 to move, and then drives slide plate 2 to move up or down.Gear lock is provided with the lateral wall of bearing block 6
Deadlock structure, is interfixed gear 4 with rack 202 by locking mechanism, slide plate 2 is fixed on correct position, is easy to oil pick-up tube
Line 9 carries out oil pumping operation.Specifically, gear can elect ratchet as, and gear locking mechanism can be selected outside ratchet, bearing block 6
Connecting rod is provided with the wall of side, connection end and the connecting rod of ratchet are rotatably connected, when gear 4 is rotated, periphery of the ratchet along gear 4
Slide, do not interfere with the rotation of gear 4, when gear 4 stops operating, ratchet is fallen into the teeth groove of gear 4, prevent gear 4
Backwards rotation so that gear 4 can remains stationary state, when the external force sufficiently large until having promotes gear 4, gear 4 just can
Again (operation principle of ratchet and ratchet can be found in for rotation《Fundamentals of Machine Design》).Pass through gear 4, rack 202 and gear lock
Deadlock structure, makes the regulation of the position of slide plate 2 more accurate, and slide plate 2 is fixed in place, it is ensured that oil pumping pipeline 9
The normal work of lower end pump orifice 9011.It can also be set with the Adjustment precision of slide plate 2, gear shaft 5 to further improve
Dial, in order to which operating personnel are carried out according to the numeral on dial to the height of gear shaft 5 and slide plate 2, pipeline 9 of pumping
Accurate adjustment, it is ensured that the oil pumping quality of oil pumping pipeline 9.
It is separately provided gear 4 and rack 202 can also realizes that guide rail 3 on sliding up and down for slide plate 2, but plate body 1 can be with
The space of slide plate 2 is defined, makes slide plate 2 vertically moving, it is to avoid slide plate 2 is deflected and increased before and after occurring
Plus the resistance that slide plate 2 is slided, or slide plate is adjusted difficulty about 2 because moving left and right.Pass through gear 4, rack 202 and guide rail 3
Work in coordination, make sliding up and down more smooth and can fixing in place for slide plate 2.
For the ease of controlling the rotation of gear shaft 5, the end of gear shaft 5 is also provided with handle 8.Specifically, handle 8
It is detachably connected with one end of gear shaft 5, it is necessary to which during rotate gear 4, handle 8 to be arranged on to the end of gear shaft 5, rotary handle
8, you can band movable gear shaft 5 is rotated, and is easy to the adjustment of the position of slide plate 2.After the position adjustment of slide plate 2 is finished, lower handle 8 is unloaded, it is to avoid
There is unintentional rotation in gear shaft 5, and causes gear 4 to rotate, and then influences the position of slide plate 2 and the normal work of oil pumping pipeline 9.
Mode is detachably connected by handle 8 and gear shaft 5, makes the control of gear shaft 5 more flexible, it is ensured that gear 4 and slide plate 2
The stabilization of position, the oil pumping operation for enabling oil pumping pipeline 9 to be stablized in place.
Specifically, handle 8 and gear shaft 5 are detachably connected that mode can be connected through a screw thread or the mode of grafting is real
It is existing.
As the first embodiment, one end of handle 8 is provided with internal thread, the end of gear shaft 5 be provided with it is above-mentioned
The external screw thread that internal thread is engaged, so that handle 8 is threadedly coupled with gear shaft 5.Thread connecting mode is easy to loading and unloading, and connection is steady
Gu, in the rotation process of handle 8, slip is not likely to produce between handle 8 and gear shaft 5, so as to ensure essence of the handle 8 to gear shaft 5
Quasi- control.
As second of embodiment, one end of handle 8 is provided with recessed slot, one end of gear shaft 5 be provided with
, can with realize handle 8 and gear shaft 5 on the plug that slot is adapted, the plug that the slot of handle 8 is sleeved on to gear shaft 5
Dismounting connection.Can be with order that the grafting between handle 8 and gear shaft 5 is more firm, on the inwall of slot and the outer wall of plug
Anti-slip rubber or anti-skid design are provided with, to avoid sliding between handle 8 and gear shaft 5, the control of gear shaft 5 is influenceed.
Inserting mode is easy to loading and unloading, time saving and energy saving, is easy to operating personnel to control the rotation of gear 4 by handle 8.
In the first embodiment and second of embodiment, beaten when holding handle 8 in order to avoid operating personnel
Sliding phenomenon, handle 8 can be provided with antiskid glue sleeve, antiskid glue sleeve for one end of grasping and be also provided with and finger shape
The depression and projection being engaged, in order to which operating personnel hold handle 8, are more accurately adjusted to the position of slide plate 2.
, it is necessary to which operating personnel are periodically to oil storage tank during oil pumping pipeline 9 is aspirated to the crude oil in oil storage tank
Interior oil pumping situation is judged.For example, when the sound that sky is taken out occurs in the oil well pump being connected with oil pumping pipeline 9, illustrating oil pumping
The present position of pipeline 9 is too high, and it is excessive with the distance between crude oil liquid level, causes oil well pump sky occur and takes out phenomenon, it is therefore desirable to
The pipeline 9 of adjustment oil pumping downwards, makes the pump orifice 9011 of the lower end of oil pumping pipeline 9 close to crude oil liquid level.When from oil pumping pipeline 9 on taking
When the former Water in oil that sample mouthful takes out is excessive, illustrate that oil pumping pipeline 9 present position is too low, it has stretched into water layer, causes oil pick-up tube
The excess moisture that line 9 is extracted out, it is therefore desirable to adjust upward oil pumping pipeline 9, make the pump orifice 9011 of the lower end of oil pumping pipeline 9 leave water
Layer.But this judgment mode is not prompt enough, when operating personnel have found that the position of oil pumping pipeline 9 needs adjustment, the crude oil of extraction
In be often mixed into more air or moisture, therefore, the utility model embodiment provide cover plate for manhole plate body 1 on also
At least one observation through hole 103 is provided with, operating personnel oliquely downward observe by observing through hole 103, you can to oil pumping pipeline 9
The oil pumping situation of lower end pump orifice 9011 is observed in time, and is judged rapidly.Meanwhile, observation through hole 103 passes through glass
Closure, with while providing observation for operating personnel and facilitating, it is ensured that the sealing of oil storage tank, it is to avoid gas in oil storage tank escapes
Go out, the healthy of operating personnel is impacted.
, it is necessary to the manhole 201 on slide plate 2 be blocked by closeouts, so that oil storage tank is again after the oil pumping end of job
Recover sealing, be convenient for the operation such as follow-up cleaning.Can be to be detachably connected between closeouts and manhole 201, example
As being threadedly coupled between closeouts and manhole 201.Or closeouts can be arranged on by manhole by hinge etc.
201 side, makes closeouts turn into the door that can open or close, thus realize closeouts for the opening of manhole 201 or
Closure.
The cover plate for manhole that the utility model embodiment is provided, when in use, can insert oil pumping pipeline 9 on slide plate 2
In manhole 201, by pumping, pipeline 9 is aspirated to the crude oil in oil storage tank.In order to simplify oil pumping pipeline 9 in manhole cover
Installation process on plate, oil pumping pipeline 9 directly can also be fixedly connected with manhole 201, i.e., the cover plate for manhole also includes taking out
Oil pipeline 9, as shown in accompanying drawing 1-2, oil pumping pipeline 9 includes the pumping stages 901 being sequentially connected with, elbow 902, linkage section 903, connection
The sealing of section 903 is fixed in manhole 201, and pumping stages 901 are stretched into oil storage tank vertically.When needing to use oil pumping pipeline 9, protect
Hold the unimpeded of oil pumping pipeline 9, it is not necessary to during using oil pumping pipeline 9, the end of the closure oil pumping linkage section 903 of pipeline 9 can make storage
Oil tank keeps closing, it is to avoid the gas overflowing in oil storage tank.Oil pumping pipeline 9 is directly set on cover plate for manhole, it is to avoid oil pumping
The handling repeatedly of pipeline 9, make the use of cover plate for manhole more facilitate.
Preferred embodiment of the present utility model is the foregoing is only, not to limit protection domain of the present utility model,
It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc. should be included in this reality
Within new protection domain.
Claims (9)
1. a kind of cover plate for manhole, including plate body (1), it is characterised in that be vertically arranged with strip through-hole on the plate body (1)
(101)；
The cover plate for manhole also includes：Along the slide plate (2) of the lateral wall longitudinal sliding motion of the plate body (1), and the slide plate (2) with
Coordinate between the plate body (1) for dynamic sealing；
Be provided with the slide plate (2) for accommodate oil pumping pipeline (9) manhole (201), the manhole (201) with
The strip through-hole (101) is connected；
The cover plate for manhole also includes：Closeouts for opening or blocking the manhole (201).
2. cover plate for manhole according to claim 1, it is characterised in that multiple bolts hole are provided with the cover plate for manhole
(102), periphery distribution of multiple bolts hole (102) along the plate body (1).
3. cover plate for manhole according to claim 1, it is characterised in that be provided with two on the lateral wall of the plate body (1)
A longitudinally guiding groove, the left and right sides of the slide plate (2) are each provided with guide rail (3), the relative side wall of two guide rails (3)
Side is respectively slidably embedded in two longitudinally guiding grooves.
4. cover plate for manhole according to claim 3, it is characterised in that the cover plate for manhole also includes two gears (4), two
Connected between the individual gear (4) by gear shaft (5)；
The two ends fixed cover of the gear shaft (5) is equipped with rolling bearing (7), and rolling bearing (7) outer cover is provided with bearing block
(6), the bearing block (6) is located on the lateral wall of the plate body (1), and positioned at the top of the guide rail (3)；
Be vertically arranged with two groups of teeth bar (202) on the lateral wall of the slide plate (2), two gears (4) respectively with two groups
The rack (202) is meshed；
Gear locking mechanism is provided with the lateral wall of the bearing block (6), for making the gear (4) be kept in precalculated position
It is static.
5. cover plate for manhole according to claim 4, it is characterised in that the gear (4) is ratchet, the gear lock crashes
Structure is ratchet；
Connecting rod is provided with the lateral wall of the bearing block (6), the connection end of the ratchet is rotatably connected with the connecting rod, when
When the gear (4) rotates, periphery of the ratchet along the gear (4) is slided, when the gear (4) stops operating, institute
Ratchet is stated to fall into the teeth groove of the gear (4).
6. cover plate for manhole according to claim 5, it is characterised in that the cover plate for manhole also includes handle (8), the hand
One end of handle (8) and the gear shaft (5) is detachably connected.
7. cover plate for manhole according to claim 6, it is characterised in that the handle (8) connects with the gear shaft (5) screw thread
Connect.
8. cover plate for manhole according to claim 6, it is characterised in that one end of the handle (8) is provided with recessed insert
Groove, one end of the gear shaft (5) is provided with the plug being adapted with the slot, makes the handle (8) and the gear shaft
(5) it is detachably connected.
9. cover plate for manhole according to claim 1, it is characterised in that be provided with the plate body (1) of the cover plate for manhole to
A few observation through hole (103), the observation through hole (103) is blocked by glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720135202.6U CN206552611U (en) | 2017-02-15 | 2017-02-15 | A kind of cover plate for manhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720135202.6U CN206552611U (en) | 2017-02-15 | 2017-02-15 | A kind of cover plate for manhole |
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| Publication Number | Publication Date |
|---|---|
| CN206552611U true CN206552611U (en) | 2017-10-13 |
Family
ID=60010879
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720135202.6U Active CN206552611U (en) | 2017-02-15 | 2017-02-15 | A kind of cover plate for manhole |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108287258A (en) * | 2017-12-19 | 2018-07-17 | 重庆南米电子商务有限公司 | A kind of electronic product guard method |
| CN108287259A (en) * | 2017-12-19 | 2018-07-17 | 重庆南米电子商务有限公司 | Electronic product protects structure |
| CN108757348A (en) * | 2018-08-01 | 2018-11-06 | 国电联合动力技术(保定)有限公司 | A kind of plug-type fan blade manhole cover tooling |
| CN110127235A (en) * | 2019-05-13 | 2019-08-16 | 淮安信息职业技术学院 | A kind of tank truck manhole device for preventing leakage and its method |
| CN114313671A (en) * | 2022-01-19 | 2022-04-12 | 广东中泽重工有限公司 | Manhole flange cover supporting structure |
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2017
- 2017-02-15 CN CN201720135202.6U patent/CN206552611U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108287258A (en) * | 2017-12-19 | 2018-07-17 | 重庆南米电子商务有限公司 | A kind of electronic product guard method |
| CN108287259A (en) * | 2017-12-19 | 2018-07-17 | 重庆南米电子商务有限公司 | Electronic product protects structure |
| CN108287259B (en) * | 2017-12-19 | 2020-03-06 | 重庆南米电子商务有限公司 | Electronic product protection structure |
| CN108287258B (en) * | 2017-12-19 | 2020-03-17 | 重庆南米电子商务有限公司 | Electronic product protection method |
| CN108757348A (en) * | 2018-08-01 | 2018-11-06 | 国电联合动力技术(保定)有限公司 | A kind of plug-type fan blade manhole cover tooling |
| CN110127235A (en) * | 2019-05-13 | 2019-08-16 | 淮安信息职业技术学院 | A kind of tank truck manhole device for preventing leakage and its method |
| CN110127235B (en) * | 2019-05-13 | 2020-09-08 | 淮安信息职业技术学院 | Manhole leakage-proof device and method of tank truck |
| CN114313671A (en) * | 2022-01-19 | 2022-04-12 | 广东中泽重工有限公司 | Manhole flange cover supporting structure |
| CN114313671B (en) * | 2022-01-19 | 2023-01-31 | 广东中泽重工有限公司 | Manhole flange cover bearing structure |
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