CN204252149U - Floating drum declines power switch and deep foundation pit precipitation device - Google Patents
Floating drum declines power switch and deep foundation pit precipitation device Download PDFInfo
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- CN204252149U CN204252149U CN201420649909.5U CN201420649909U CN204252149U CN 204252149 U CN204252149 U CN 204252149U CN 201420649909 U CN201420649909 U CN 201420649909U CN 204252149 U CN204252149 U CN 204252149U
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Abstract
The utility model discloses a kind of floating drum to decline power switch, comprise urceolus, floating drum, the normally closed push rod of magnetic force and bracing wire, outer tube inner wall is installed the moving contact that is connected with wire and is determined contact, moving contact with determine contact place the normally closed push rod of the magnetic force promoting moving contact be set, the lower end of the normally closed push rod of magnetic force arranges moving magnet, the top of moving magnet is provided with the fixed magnet being fixed on outer tube inner wall, moving contact and determine contact when moving magnet and fixed magnet adhesive, one end of the bottom connecting stay wire of the normally closed push rod of magnetic force, the other end of bracing wire connects floating drum, application floating drum declines the deep foundation pit precipitation device of power switch, decline with floating drum respectively power switch and water pump of contactor is connected, floating drum outer wall arranges water outlet power-on switch and connects indicator lamp, to indicate well casing middle water level situation, make the lifting of water level to control the opening and closing of pump motor, structure is simple, alleviate intensity of workers, controlling water level is not super to fall.
Description
Technical field
Deep foundation pit precipitation field must be carried out before the present invention relates to industrial and civil architecture excavation of foundation pit.More specifically relate to a kind of floating drum to decline power switch, relate to application floating drum to decline the deep foundation pit precipitation device of power switch simultaneously, adapt to that cutting depth is greater than 15 meters, area is greater than the foundation ditch of 2000 square meters, in the stratum of riverfront, alluvium in the Quaternary Period, littoral facies rich groundwater, Be very effective.
Background technology
Deep foundation pit precipitation is the important process that must carry out before excavation of foundation pit, in Deep Excavation, often can run into silt, flour sand, the moisture abundant stratum of fine sand.A few days before excavation, underground water must be down to excavation face with about next meter, construction machinery and personnel could normal work.If underground water according to excavation face less than 0.3 meter, stratum can machinery and personnel disturbance under, produce shake react, start liquefaction, now construction machinery can sink, and personnel activity is obstructed, so dynamic water level must ensure at excavation face following certain depth ability normal construction.In Deep Excavation, the scheme that classification is progressively excavated must be accomplished downwards, and the gradient of level and level can not be greater than 45 degree, otherwise can cause and cave in, cause security incident.Along with the increase of cutting depth, area expands gradually, and often worked by several or tens water pumps, even tens work simultaneously simultaneously.In this case, if observation not in time, be easy to cause water level to surpass and fall.The super the possibility of result fallen causes ground settlement to aggravate, and public or private property can be caused further to lose.
At present this field automatic control technology mainly contain float-ball type, radar type, chip type several, device is placed in the well casing of internal diameter 254 millimeters, and the flange of water pump pipe and the external diameter of cable will more than 150 millimeters, and bending amplitude is larger.Floating ball type switch needs to be worked by lever, needs space larger; Radar type switch is by wave transmission and recovery operation, and electric wave is easily disturbed at well casing, so these two kinds of switches cisco unity malfunction in narrow space, under 15 meters of degree of depth.Chip type Switch Controller water level is too sensitive, needs the time relay to spread assistant engineer and does, can not reflect real water level.The switch that deep foundation pit precipitation needs is; When water level rising certain altitude (600 millimeter), switch Operating In Persistent Current Mode, when the water level descends, switch can not disconnect stopping at once, just can quit work when only dropping to design load.Therefore, in long-term working practice, have developed device of the present utility model, invent decline power switch and this switch of application of floating drum through overtesting and carry out the device of deep foundation pit precipitation, dynamic water level is shown by indicator lamp, control water pump by contactor, make dynamic water level be in scope of design, substantially produce a desired effect through overtesting.
Summary of the invention
The purpose of this utility model is to provide a kind of floating drum to decline power switch, and structure is simple, and material is easy to get, and easily assembles.
Another object of the present utility model is to provide a kind of deep foundation pit precipitation device, can level monitoring, and simple to operate, saves manpower.
In order to achieve the above object, the utility model takes following technical measures:
A kind of floating drum declines power switch, comprise urceolus, floating drum, contact carrier, the normally closed push rod of magnetic force and bracing wire, urceolus lower end is openend, outer tube inner wall fixed contact bearing, contact carrier installed respectively the moving contact be connected with wire and determine contact, moving contact with determine contact place the normally closed push rod of the magnetic force promoting moving contact be set, the top of the normally closed push rod of magnetic force is positioned at below moving contact, the lower end of the normally closed push rod of magnetic force arranges moving magnet, the top of moving magnet is provided with the fixed magnet being fixed on outer tube inner wall, moving contact and determine contact when moving magnet and fixed magnet adhesive, one end of the bottom connecting stay wire of the normally closed push rod of magnetic force, the other end of bracing wire connects floating drum, floating drum is placed in outer barrel and bubbles through the water column, the external diameter of floating drum is less than the internal diameter of urceolus.
The outer wall of described urceolus sets gradually flood stage from top to bottom and touches water power-on switch and target water level touches water power-on switch.
The outer wall of described urceolus arranges dangerous water level and touches water power-on switch, and dangerous water level touches water power-on switch and touches water power-on switch and flood stage is touched between water power-on switch in target water level.
Described bracing wire lower end is through the top aperture of floating drum and connecting stay wire pendant, and bracing wire pendant is positioned at floating drum.
Described tactile water power-on switch is that the termination of two noncontact wires exposes metal, and metal is met water circuit and connected, and water level decreasing then circuit disconnects.
A kind of deep foundation pit precipitation device comprises electrical control cubicles and water pump, and the circuit control system of described electrical control cubicles comprises transformer, and transformer output is parallel line respectively
, circuit
and circuit
, circuit
comprise connect the respectively target water level of outer drum outer wall of target water level indicator lamp L3 in parallel and flood stage indicator lamp L1, target water level indicator lamp L3 and flood stage indicator lamp L1 and touch water power-on switch and flood stage touches water power-on switch, circuit
connect hand switch, circuit
connect floating drum to decline the moving contact of power switch, circuit
and circuit
the A1 joint of series contactor successively, the operating circuit output of contactor is connected with water pump.
The operating circuit output of described contactor connects the pump working indicator lamp L4 in parallel with water pump.
Described circuit
middle target water level indicator lamp L3 and flood stage indicator lamp L1 dangerous water level indicator light L2 in parallel, the dangerous water level that arranges of the outer drum outer wall of dangerous water level indicator light L2 series connection touches water power-on switch.
The utility model compared with prior art, has the following advantages:
1, do not surpass and fall, make ground settlement be in minimum; 2, alleviate intensity of workers, especially night, only need viewing lamp just can understand WIH position situation; 3, energy conservation, has 1/1 to three/4th [every day] time to be in off working state through calculating controlled water pump; 4, structure is simple, and material is all common materials, conveniently production in enormous quantities on the market.
Accompanying drawing explanation
Fig. 1 be water level when being in target water level floating drum to decline power switch structure diagram.
Fig. 2 be water level when being in flood stage floating drum to decline power switch structure diagram.
Fig. 3 is a kind of circuit working schematic diagram of deep foundation pit precipitation device.
Wherein, 1-contact carrier, 2-moving contact, 3-determine contact, the normally closed push rod of 4-magnetic force, 5-fixed magnet, 6-moving magnet, 7-floating drum, 8-urceolus, 9-bracing wire, 10-bracing wire falls, 11-flood stage is touched water power-on switch and is closed, and 12-dangerous water level touches water power-on switch, and 13-target water level is touched water energising and opened.
L1-flood stage indicator lamp, L2-dangerous water level indicator light, L3-target water level indicator lamp, L4-pump working indicator lamp.
Detailed description of the invention
below in conjunction with accompanying drawing, the utility model is explained further.
embodiment 1:
As depicted in figs. 1 and 2, a kind of floating drum declines power switch, comprise urceolus 8, floating drum 7, contact carrier 1, the normally closed push rod 4 of magnetic force and bracing wire 9, urceolus 8 lower end is openend, urceolus 8 inwall fixed contact bearing 1, contact carrier 1 installed respectively moving contact 2 and determine contact 3, moving contact 2 and determine contact 3 arranges terminal respectively, moving contact 2 with determine contact 3 contact position the normally closed push rod 4 of the magnetic force promoting moving contact 2 be set, the top of the normally closed push rod 4 of magnetic force is positioned at below moving contact 2, the lower end of the normally closed push rod 4 of magnetic force arranges moving magnet 6, the top of moving magnet 6 is provided with the fixed magnet 5 being fixed on urceolus 8 inwall, when moving magnet 6 and fixed magnet 5 adhesive moving contact 2 with determine contact 3 and contact, one end of the bottom connecting stay wire 9 of the normally closed push rod 4 of magnetic force, the other end of bracing wire 9 connects floating drum 7, floating drum 7 is placed in urceolus 8 inside and bubbles through the water column, the external diameter of floating drum 7 is less than the internal diameter of urceolus 8, the outer wall of urceolus 8 sets gradually flood stage from top to bottom and touches water power-on switch 13, dangerous water level touches water power-on switch 12 and target water level touches water power-on switch 11.
Described bracing wire 9 lower end is through floating drum 7 top aperture and connecting stay wire falls 10, it is inner that bracing wire pendant 10 is positioned at floating drum 7, when water level arrives target water level, bracing wire pendant 10 and floating drum 7 top contact, now floating drum gives bracing wire and falls buoyancy suffered by 10 power F(F=floating drum gravity-floating drums), under the gravity of bracing wire pendant 10 and the effect of power F, bracing wire 9 pulls the normally closed push rod 4 of magnetic force, moving magnet 6 then on the normally closed push rod 4 of magnetic force is separated with fixed magnet 5, moving contact 2 simultaneously on magnetic force normally closed push rod 4 end face moves downward together with the normally closed push rod 4 of magnetic force, moving contact 2 with determine contact 3 and be separated.
Described flood stage touches water power-on switch 13, dangerous water level touches water power-on switch 12 and target water level is touched the termination that water power-on switch 11 is two noncontact wires and exposed metal, metal is met water circuit and is connected, water level decreasing then circuit disconnects, and two noncontact wires are fixed on urceolus 8 outer wall.
embodiment 2:
As shown in Figure 3, a kind of deep foundation pit precipitation device comprises electrical control cubicles and water pump, and the circuit control system of described electrical control cubicles comprises transformer, and transformer output is parallel line respectively
, circuit
and circuit
, circuit
comprise target water level indicator lamp L3, dangerous water level indicator light L2 in parallel and flood stage indicator lamp L1, target water level indicator lamp L3, dangerous water level indicator light L2 and flood stage indicator lamp L1 connect respectively urceolus 8 outer wall target water level touches water power-on switch 13, dangerous water level touches water power-on switch 12 and flood stage touches water power-on switch 11, circuit
connect hand switch, circuit
connect floating drum to decline the moving contact of power switch, circuit
and circuit
the A1 joint of series contactor contactor successively, the operating circuit output of contactor is connected with water pump, and the operating circuit output of described contactor connects the pump working indicator lamp L4 in parallel with water pump.
220V alternating current is become 24V-36V direct current by described transformer, and transformer is connected with protection circuit (comprising air switch and earth leakage protective device).
Circuit
concrete connection be: transformer 24V output target water level indicator lamp in parallel L3 positive terminal, dangerous water level indicator light L2 positive terminal and flood stage indicator lamp L1 positive terminal, target water level indicator lamp L3 anode connector, connect the respectively target water level of urceolus 8 outer wall of dangerous water level indicator light L2 anode connector and flood stage indicator lamp L1 anode connector touches water power-on switch 13 positive terminal, dangerous water level touches water power-on switch 12 positive terminal and flood stage touches water power-on switch 11 positive terminal, target water level touches the anode connector of water power-on switch 13, dangerous water level touches the anode connector connection transformer negative pole of output end joint respectively that the anode connector of water power-on switch 12 and flood stage touch water power-on switch 11,
Circuit
concrete connection be: transformer 24V output head anode joint connects a side connector of hand switch, another joint of hand switch connects contactor A1 joint, contactor A2 joint connection transformer negative pole of output end joint, A1 and A2 is the joint of the magnetic coil (24V) of contactor, the operating circuit (220V) of contactor connects water pump, and water pump is in parallel with pump working indicator lamp;
Circuit
concrete connection be: what the positive terminal of transformer 24V output connected that floating drum declines power switch determines contact, the decline moving contact of power switch of floating drum connects the A1 joint of contactor, the A2 joint connection transformer anode connector of contactor, the operating circuit (220V) of contactor connects water pump, and water pump is in parallel with pump working indicator lamp.
the course of work of the utility model device and principle are:
1, according to the engineering geological condition intending excavation section, cutting depth, excavation area, designs control objectives dynamic water level.2, micro-power float switch is placed in observation well, and the dewatering well of controlled water pump and observation well have the distance of about 15 meters, and start precipitation gang of wells pump working [monitoring system is connected with one of them or two], now system is controlled by hand switch.3, viewing lamp understands dynamic water level, and when reaching design load, turn off hand switch, now system enters the automatic control stage.Note the change of indicator lamp, understand dynamic water level whether in scope of design.
After starting water pump in step 2, water level decreasing is to (now flood stage indicator lamp L1 and dangerous water level indicator light L2 goes out still bright with target water level indicator lamp L3) closed hand switch during target water level, when water level is in target water level, floating drum 8 floats on the surface as shown in Figure 1, now the target water level of urceolus 8 outer wall touch water power-on switch close, then target water level indicator lamp L3 bright (green); When water level rises to dangerous water level, now the dangerous water level of urceolus 8 outer wall touch water power-on switch close, then dangerous water level indicator light L2 bright (yellow); When water level continues to rise arrival flood stage, now the flood stage of urceolus 8 outer wall touch water power-on switch close, then flood stage indicator lamp L1 bright (redness), floating drum 8 floats on the surface as shown in Figure 2, simultaneously, moving magnet up inhale with fixed magnet and, moving magnet up moves and drives the normally closed push rod of magnetic force to promote moving contact, moving contact and determine contact, then the micro-power on-off circuit of floating drum is connected, now contactor coil energising, the contact closure of contactor, then pump working indicator lamp L4 bright (green) while that water pump being started working.After pump working a period of time, water level starts to decline, when dropping to below flood stage, red light L1 goes out, and when dropping to below dangerous water level, amber light L2 goes out, when dropping to target water level, bracing wire pendant 10 drives bracing wire 9 to pull the normally closed push rod 4 of magnetic force, and the circuit of the micro-power switch of floating drum disconnects, contactor coil power-off, the contact of contactor is separated, water pump quits work, and pump working indicator lamp L4 goes out, and a work period terminates.
The change of Control Room personal observations target water level indicator lamp L3, this lamp should Chang Liang, as lamp goes out, checks abnormal conditions.
Precipitation automatic monitoring technology of the present utility model, it can work in the sighting tube being not less than value footpath 40mm, easy and simple to handle, is reducing labor intensity and is having remarkable result in energy conservation.
Claims (7)
1. a floating drum declines power switch, it is characterized in that: the described floating drum power switch that declines comprises urceolus (8), floating drum (7), contact carrier (1), the normally closed push rod of magnetic force (4) and bracing wire (9), urceolus (8) lower end is openend, urceolus (8) inwall fixed contact bearing (1), contact carrier (1) installed respectively moving contact (2) and determine contact (3), moving contact (2) and determine contact (3) arranges terminal respectively, moving contact (2) with determine contact (3) contact position the normally closed push rod of magnetic force (4) promoting moving contact (2) be set, the top of the normally closed push rod of magnetic force (4) is positioned at moving contact (2) below, the lower end of the normally closed push rod of magnetic force (4) arranges moving magnet (6), the top of moving magnet (6) is provided with the fixed magnet (5) being fixed on urceolus (8) inwall, when moving magnet (6) and fixed magnet (5) adhesive moving contact (2) with determine contact (3) and contact, one end of the bottom connecting stay wire (9) of the normally closed push rod of magnetic force (4), the other end of bracing wire (9) connects floating drum (7), floating drum (7) is placed in urceolus (8) inside and bubbles through the water column, the external diameter of floating drum (7) is less than the internal diameter of urceolus (8).
2. a kind of floating drum according to claim 1 declines power switch, it is characterized in that: the outer wall of urceolus (8) sets gradually flood stage from top to bottom and touches water power-on switch (13) and target water level touches water power-on switch (11).
3. a kind of floating drum according to claim 2 declines power switch, it is characterized in that: the outer wall of described urceolus arranges dangerous water level and touches water power-on switch (12), dangerous water level touches water power-on switch (12) and is positioned at target water level and touches water power-on switch (11) and flood stage is touched between water power-on switch (13).
4. a kind of floating drum according to claim 1 declines power switch, it is characterized in that: described bracing wire (9) lower end is through floating drum (7) top aperture and connecting stay wire pendant (10), and it is inner that bracing wire pendant (10) is positioned at floating drum (7).
5. a deep foundation pit precipitation device, comprises electrical control cubicles and water pump, it is characterized in that: the circuit control system of described electrical control cubicles comprises transformer, and transformer output is parallel line respectively
, circuit
and circuit
, circuit
comprise target water level indicator lamp L3 in parallel and flood stage indicator lamp L1, connect the respectively target water level of urceolus (8) outer wall of target water level indicator lamp L3 and flood stage indicator lamp L1 touches water power-on switch (13) and flood stage touches water power-on switch (11), circuit
connect hand switch, circuit
connect floating drum to decline the moving contact of power switch, circuit
and circuit
the A1 joint of series contactor successively, the operating circuit output of contactor is connected with water pump.
6. a kind of deep foundation pit precipitation device according to claim 5, is characterized in that: the operating circuit output of described contactor connects the pump working indicator lamp L4 in parallel with water pump.
7. a kind of deep foundation pit precipitation device according to claim 5, is characterized in that: described circuit
middle target water level indicator lamp L3 and flood stage indicator lamp L1 dangerous water level indicator light L2 in parallel, the dangerous water level that arranges of the outer drum outer wall of dangerous water level indicator light L2 series connection touches water power-on switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649909.5U CN204252149U (en) | 2014-11-03 | 2014-11-03 | Floating drum declines power switch and deep foundation pit precipitation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420649909.5U CN204252149U (en) | 2014-11-03 | 2014-11-03 | Floating drum declines power switch and deep foundation pit precipitation device |
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| Publication Number | Publication Date |
|---|---|
| CN204252149U true CN204252149U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420649909.5U Expired - Fee Related CN204252149U (en) | 2014-11-03 | 2014-11-03 | Floating drum declines power switch and deep foundation pit precipitation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137342A (en) * | 2015-08-25 | 2015-12-09 | 贵州振华华联电子有限公司 | Micro-switch service life test device |
| CN110526516A (en) * | 2019-09-21 | 2019-12-03 | 泉州华大环保科技有限公司 | A kind of integration biochemical treatment apparatus |
| CN111964961A (en) * | 2020-10-09 | 2020-11-20 | 吉林大学 | Full-automatic under-ice sediment vibration sampler |
-
2014
- 2014-11-03 CN CN201420649909.5U patent/CN204252149U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137342A (en) * | 2015-08-25 | 2015-12-09 | 贵州振华华联电子有限公司 | Micro-switch service life test device |
| CN110526516A (en) * | 2019-09-21 | 2019-12-03 | 泉州华大环保科技有限公司 | A kind of integration biochemical treatment apparatus |
| CN111964961A (en) * | 2020-10-09 | 2020-11-20 | 吉林大学 | Full-automatic under-ice sediment vibration sampler |
| CN111964961B (en) * | 2020-10-09 | 2022-05-27 | 吉林大学 | Full-automatic under-ice sediment vibration sampler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20191103 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |