CN110670710A - Dredging equipment and dredging method - Google Patents

Dredging equipment and dredging method Download PDF

Info

Publication number
CN110670710A
CN110670710A CN201910945750.9A CN201910945750A CN110670710A CN 110670710 A CN110670710 A CN 110670710A CN 201910945750 A CN201910945750 A CN 201910945750A CN 110670710 A CN110670710 A CN 110670710A
Authority
CN
China
Prior art keywords
dredging
sludge
equipment
shoveling
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910945750.9A
Other languages
Chinese (zh)
Inventor
陈剑平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Special Environmental Protection Equipment Manufacturing Co
Original Assignee
Hunan Special Environmental Protection Equipment Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Special Environmental Protection Equipment Manufacturing Co filed Critical Hunan Special Environmental Protection Equipment Manufacturing Co
Priority to CN201910945750.9A priority Critical patent/CN110670710A/en
Publication of CN110670710A publication Critical patent/CN110670710A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F7/00Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10Wheeled apparatus for emptying sewers or cesspools
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F7/00Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10Wheeled apparatus for emptying sewers or cesspools
    • E03F7/106Accessories, e.g. hose support

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

The invention relates to and provides a dredging device and a dredging method, comprising the following steps: equipment body, running gear, shovel dig mechanism and screening output mechanism. The travelling mechanism is arranged at the bottom of the equipment body and used for driving the equipment body to move; the shoveling and digging mechanism is arranged at the front part of the equipment body and is used for shoveling and digging sludge; the screening output mechanism is arranged on the equipment body and used for receiving sludge shoveled by the shoveling mechanism and screening and outputting the sludge. The invention can control the dredging equipment to work to clean the silt, can realize mechanized and all-weather continuous operation, and improves the construction efficiency; manual direct dredging is not needed, and the probability of safety accidents is reduced; the ground is not required to be damaged during dredging, noise is eliminated, and construction cost brought by surface repairing is reduced; the mechanical equipment is adopted for dredging, so that the probability of accidentally damaging underground tap water and electric power pipelines can be reduced, and the normal life of residents cannot be influenced; the desilted sludge is directly output to storage equipment on the ground through a pipeline, and cannot contact with the ground to pollute the environment.

Description

Dredging equipment and dredging method
Technical Field
The invention relates to the field of sludge treatment, in particular to dredging equipment and a dredging method.
Background
Underground pipe networks and box culvert river channel pollution discharge infrastructure technology and construction of various domestic large, medium and small cities fall behind, the urban building rapid development cannot be kept up with, the pollution discharge effect is poor, water logging disasters often occur in rainy seasons, huge losses are brought to lives and properties of people, and especially, a large amount of pollutants can be deposited after the pollution discharge infrastructure is subjected to a long service life and needs to be regularly cleaned.
At present, the dredging technology, method and capability of the underground box culvert pipe network are relatively backward, the operation is mainly manual, and the dredging efficiency is low; the manual dredging can not ensure the safety, and casualty events can easily occur; the ground is required to be damaged during dredging, great noise is generated, the ground surface is required to be repaired after dredging is completed, and the construction cost is increased; during dredging, underground tap water, electric power and other pipelines can be accidentally damaged, so that the normal life of residents is influenced; the dredged sludge is directly output to the ground, and the environment is also polluted.
In order to solve the problems, the manual carrying of auxiliary tools for dredging can be considered, however, the actual operation efficiency is low, the construction period is long, the dredging is not thorough, and great troubles are brought to subsequent city management.
Disclosure of Invention
Therefore, it is necessary to provide a dredging apparatus and a dredging method for solving the problems of low dredging efficiency, low safety coefficient of dredging operation and easy influence on normal life of residents.
A dredging apparatus, said dredging apparatus comprising:
an apparatus body;
the travelling mechanism is arranged at the bottom of the equipment body and used for driving the equipment body to move;
the shoveling and digging mechanism is arranged at the front part of the equipment body and is used for shoveling and digging sludge;
and the screening output mechanism is arranged on the equipment body and used for receiving the sludge shoveled by the shoveling and digging mechanism and screening and outputting the sludge.
When the underground box culvert dredging machine works, after dredging equipment enters the underground, the dredging equipment moves forwards along the underground box culvert under the driving of the travelling mechanism, when sludge is encountered on a travelling line, the shoveling mechanism is controlled to act to shovel and dig the sludge, the shoveling mechanism sends the sludge to the screening output mechanism, and the screening output mechanism carries out screening treatment on the sludge and then outputs the sludge outwards.
The dredging equipment at least has the following beneficial technical effects:
(1) the silt can be cleaned by controlling the operation of the silt cleaning equipment, the mechanical and all-weather continuous operation can be realized, the construction efficiency is improved, and the construction period is greatly shortened; manual direct dredging is not needed, the probability of safety accidents is reduced, and the personal safety of operating personnel is ensured;
(2) the ground is not required to be damaged during dredging, the damage to the original urban environment is avoided, the noise is eliminated to a great extent, and the construction cost brought by surface repairing is reduced; the mechanical equipment is adopted for dredging, so that the probability of accidentally destroying underground tap water and electric power pipelines can be reduced, the functions of original facilities in a city are not influenced, the normal life of residents is not influenced, even the dredging equipment can be directly driven to enter an underground box culvert for dredging construction without intercepting a box culvert pipe network, and the normal discharge of normal water and urban sewage is not influenced; the desilted sludge is directly output to the storage equipment on the ground through a pipeline, and the sludge is not contacted with the ground to cause pollution to the environment.
(3) The dredging is thorough, and great convenience is brought to the subsequent city management; the general expectations of 'no excavation on the ground, no closure of the culvert and the canal, no removal of people in the pit and no pollution on the ground' for dredging operations of underground box culvert pipe networks, ditch and river channels and the like in various provinces, cities and towns at present are realized.
In one embodiment, the screening output mechanism comprises:
the screening device is arranged adjacent to the shoveling mechanism;
the fluid pumping component is arranged below the screener and used for receiving the fluid substances screened by the screener and pumping the fluid substances outwards;
a solids storage member adjacent the screen for receiving and storing solids material screened by the screen.
In one embodiment, the fluid pumping component comprises a fluid receiving hopper, a fluid output pump and a material output pipeline, wherein the suction end of the fluid output pump is connected with the fluid receiving hopper, and the pump outlet end of the fluid output pump is connected with the material output pipeline.
In one embodiment, the screening output mechanism further comprises a mud pump-out component arranged on the equipment body and used for sucking the flowing mud and pumping the mud outwards.
In one embodiment, the pipe coiling device further comprises a pipe coiling part which is arranged on the device body and used for coiling or releasing the pipeline on the device body when the device body walks.
In one embodiment, the pipe coiling part comprises a pipe coiling device and a pipe guiding assembly arranged on the pipe coiling device, and the pipe guiding assembly comprises:
the rotary support is arranged on the pipe coiling device, and a leading-out port is arranged on the rotary support and used for leading out a pipeline on the pipe coiling device;
and the driving component is connected with the rotating bracket and used for driving the rotating bracket to enable the leading-out opening to rotate around the pipe coiling device in the circumferential direction.
In one embodiment, the pipeline guide assembly further comprises a tube-discharging component arranged at the outlet, and the tube-discharging component can be reciprocally translated between one side end face and the other side end face of the tube rolling device so as to discharge tubes orderly on the circumferential surface of the tube rolling device; the calandria part includes:
the screw rod is arranged along the axial direction of the pipe coiling device and can rotate around the axis of the screw rod under the driving of the driving unit;
the sliding block is spirally matched and installed on the screw rod; and
and the guide unit is fixed on the sliding block and used for guiding the pipeline led out from the pipe coiling device.
In one embodiment, the pipe coiling device further comprises a pressing component which is arranged outside the pipe coiling device and used for pressing the pipeline on the circumferential surface of the pipe coiling device.
In one embodiment, the power switching arm is arranged on the equipment body and used for lifting the power pipeline to be connected with power equipment on the ground.
In one embodiment, the shoveling mechanism includes:
one end of the shoveling arm is rotatably connected to the equipment body;
and the shovel bucket is connected with the other end of the shovel arm and is used for shoveling and digging sludge under the driving of the shovel arm.
In one embodiment, the system further comprises an automatic control system, wherein the automatic control system comprises:
the pressure sensor is arranged in the shoveling and digging mechanism and used for detecting resistance borne by the shoveling and digging mechanism when shoveling and digging actions are carried out;
the control module is connected with the pressure sensor to receive the resistance signal detected by the pressure sensor, and the control module is connected with the travelling mechanism, the shoveling mechanism and the screening output mechanism to control the travelling mechanism, the shoveling mechanism and the screening output mechanism to act.
A dredging method comprises the following steps:
(1) controlling the dredging equipment to enter the working section of the underground box culvert, and driving an equipment body of the dredging equipment to move forwards along the underground box culvert by a travelling mechanism of the dredging equipment;
(2) when the sludge in front of the equipment body is in a slurry form, a slurry pumping-out component of the dredging equipment directly pumps out the slurry through the material output pipeline; when the sludge moved to the front of the equipment body by the dredging equipment is in a non-slurry state, a shoveling mechanism of the dredging equipment shovels and digs the sludge and pours the sludge into a screening output mechanism of the dredging equipment, a screen in the screening output mechanism screens the sludge, fluid substances screened by the screen are pumped outwards by a fluid pumping part in the screening output mechanism, and solid substances screened by the screen directly enter a solid storage part contained in the screening output mechanism to be stored;
(3) when the dredging equipment moves to the tail end of the working section of the underground box culvert, the walking mechanism stops driving the equipment body to move forwards.
The control method can be used for cleaning sludge, realizing mechanized and all-weather continuous operation, improving the construction efficiency and greatly shortening the construction period; manual direct dredging is not needed, the probability of safety accidents is reduced, and the personal safety of operating personnel is ensured;
corresponding actions can be carried out according to different sludge forms, so that various kinds of sludge can be quickly cleaned, and the sludge can be continuously classified and output to ground treatment equipment, so that the sludge cleaning task can be efficiently finished;
the ground is not required to be damaged during dredging, the damage to the original urban environment is avoided, the noise is eliminated to a great extent, and the construction cost brought by surface repairing is reduced; the mechanical equipment is adopted for dredging, so that the probability of accidentally destroying underground tap water and electric power pipelines can be reduced, the functions of original facilities in a city are not influenced, the normal life of residents is not influenced, even the dredging equipment can be directly driven to enter an underground box culvert for dredging construction without intercepting a box culvert pipe network, and the normal discharge of normal water and urban sewage is not influenced; the desilted sludge is directly output to the storage equipment on the ground through a pipeline, and the sludge is not contacted with the ground to cause pollution to the environment.
Drawings
FIG. 1 is a schematic perspective view of a dredging apparatus according to an embodiment of the present invention;
FIG. 2 is a front view of the dredging apparatus of FIG. 1;
FIG. 3 is a schematic view of the shoveling mechanism in the dredging apparatus of FIG. 1 turning the shoveled sludge over into the screening output mechanism;
FIG. 4 is a schematic view of the screen of the dredging apparatus of FIG. 1 inverting the solids into an adjacent solids storage member;
FIG. 5 is a schematic perspective view of a roller tube assembly according to an embodiment of the present invention;
FIG. 6 is a front view of the spool member of FIG. 5;
FIG. 7 is a top view of the spool member of FIG. 5;
FIG. 8 is a schematic view of the reel pipe part of FIG. 5 with the outlet of the rotating bracket facing upward;
FIG. 9 is a schematic view showing that the withdrawal opening of the rotating bracket in the roll pipe part of FIG. 5 is kept horizontal;
fig. 10 is a schematic perspective view of a rack pipe component according to an embodiment of the present invention;
fig. 11 is a schematic view of the body lifting mechanism of the dredging apparatus of fig. 1 lifting the apparatus body.
In the figure: 100. the main body of the device is provided with a plurality of air outlets,
200. a traveling mechanism, 210, a traveling crawler belt,
300. a shoveling mechanism 310, a shoveling arm 311, a shoveling oil cylinder 320, a shoveling bucket,
400. a sifting output mechanism, 410, sifter, 411, sifting hopper, 420, fluid pumping means, 421, fluid receiving hopper, 422, fluid output pump, 423, material output line, 430, solids storage means, 431, loading hopper, 440, mud pumping means,
500. a pipe coiling component 510, a pipe coiling device 511, a fixing frame 512, a power chain,
520. a rotating bracket 521, an outlet 522 and a connecting rod,
530. a driving part 531, a telescopic rod 5311, a driving end 532 and a connecting rod component,
540. a calandria component 541, a screw rod 542, a driving unit 5421, a chain wheel 5422, a driving chain 543, a slide block 544, a guiding unit 5441, a limit frame 5442 and a guiding wheel,
550. a pressing component 551, a pressing bracket 5511, a pressing arm 5512, an adjusting spring 552, a pressing body 5521, an adjusting arm 5522 and a pressing roller,
600. a power switching arm is arranged on the power switching arm,
700. a machine body lifting mechanism 710, a jacking oil cylinder,
800. an image-taking apparatus is provided with a camera,
900. an illumination device.
Detailed Description
The invention will be further explained with reference to the drawings.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Those of ordinary skill in the art will recognize that variations and modifications of the various embodiments described herein can be made without departing from the scope of the invention, which is defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, in an embodiment of the present invention, there is provided a dredging apparatus including: the equipment comprises an equipment body 100, a walking mechanism 200, a shoveling mechanism 300 and a screening output mechanism 400. Wherein, the walking mechanism 200 is arranged at the bottom of the device body 100 and used for driving the device body 100 to move; the shoveling mechanism 300 is arranged at the front part of the equipment body 100 and is used for shoveling and digging sludge; the screening output mechanism 400 is arranged on the equipment body 100 and is used for receiving the sludge shoveled by the shoveling mechanism 300 and outputting the sludge after screening treatment.
During specific work, after dredging equipment enters the underground, the dredging equipment moves forwards along the underground box culvert under the driving of the traveling mechanism 200, when sludge is encountered on a traveling route, the shoveling mechanism 300 is controlled to act to shovel and dig the sludge, the shoveling mechanism 300 sends the sludge to the screening output mechanism 400, and the screening output mechanism 400 screens and processes the sludge and then outputs the sludge outwards.
Referring to fig. 2, in some embodiments, screening output mechanism 400 includes: a sifter 410, a fluid pumping member 420, a solids storage member 430. Wherein the sifter 410 is disposed adjacent to the scooping mechanism 300; a fluid pumping member 420 provided below the sifter 410 for receiving the fluid material sifted by the sifter 410 and pumping the fluid material outwardly; a solids storage member 430 is adjacent the screen 410 for receiving and storing solids screened by the screen 410.
The screen 410 can screen the sludge, wherein coarse solid matters are screened out and then directly enter the solid storage part 430 from the screen 410 to be stored, and the screened fluid matters are pumped outwards through the fluid pumping part 420, so that the dredging equipment can continuously and rapidly screen the sludge and timely output the sludge outwards.
Referring to fig. 4, in some embodiments, the sieving hopper 411 of the sieving device 410 is reversibly provided on the sieving device 410 for reversing the solid matter therein to the adjacent solid storage member 430, and in particular, the sieving hopper 411 may be hinged at one side edge of the sieving device 410, as shown in fig. 4, and may be driven to reverse around the hinged edge by a cylinder or telescopic rod or the like to reverse the solid matter in the sieving hopper 411 to the adjacent solid storage member such as the loading hopper 431. Preferably, the screen 410 is a vibrating screen, and the vibrating screen has high vibrating screen efficiency and good operation stability.
Referring to fig. 1, in some embodiments, the fluid pumping part 420 includes a fluid receiving hopper 421, a fluid output pump 422 and a material output line 423, the fluid receiving hopper 421 is used for receiving fluid materials screened by the screen 410, a suction end of the fluid output pump 422 is connected with the fluid receiving hopper 421, and a pump output end of the fluid output pump 422 is connected with the material output line 423. The fluid output pump 422 draws in fluid material in the fluid receiving hopper 421 and pumps it outwards. It is understood that in other embodiments, the fluid pumping component 420 may be a component having a liquid pumping function, such as a water pump, and the specific structure thereof is not limited herein.
With continued reference to fig. 1, in some embodiments, the solids storage component 430 can be a loading bucket 431 in which the solids can be cleaned using a grab bucket. Preferably, the bottom of the solids storage 430 is provided with a drive cylinder by which the solids storage 430 can be driven to roll over when the dredging apparatus reaches the ground, and the solids therein dumped into a uniform collection means on the ground for subsequent treatment. In other embodiments, the solids storage component 430 may also be a storage tank with a capacity to collect solids and to allow for uniform disposal after dredging.
Referring to fig. 1, in some embodiments, the screening output mechanism 400 further includes a mud pump-out member 440, and the mud pump-out member 440 is provided on the apparatus body 100 to suck and pump the fluid mud outward. Specifically, when the water content of the sludge is high, the sludge can be sucked in by the sludge pump-out part 440 and directly pumped out, so that the screening step is omitted, and the dredging speed is further improved. Preferably, the mud pump-out member 440 is connected to the material output line 423, and a gate valve is provided on the material output line 423 for controlling the connection and disconnection between the material output line 423 and the mud pump-out member 440 and the fluid pumping member 420, respectively. When the fluid mud needs to be pumped, the gate valve is rotated to enable the material output pipeline 423 to be communicated with the mud pumping-out part 440, and then the fluid mud can be directly pumped out through the material output pipeline 423; when the fluid substances screened by the screen 410 need to be pumped, the gate valve is rotated to connect the material output pipeline 423 with the fluid pumping part 420, namely, the fluid substances screened by the screen 410 can be pumped out by using the fluid pumping part 420, and the mud pumping-out part 440 and the fluid pumping part 420 share the same output pipeline, so that the overall pipeline arrangement of the dredging equipment is simpler, and the purpose of intensive design is achieved.
Referring to fig. 1, in some embodiments, a reel pipe member 500 is further included, provided on the apparatus body 100, for reeling or releasing a pipeline on the apparatus body 100 when the apparatus body 100 is walking. When the dredging equipment is continuously moved forwards, the equipment body 100 is further away from the wellhead at the initial position, and the material output pipeline 423 needs to be continuously released through the pipe coiling component 500 to meet the requirement that the sludge is pumped outwards to the initial wellhead; meanwhile, the power pipeline is continuously released to ensure that the ground power can be normally supplied, and the communication pipeline is continuously released to ensure the continuous communication with the ground. The pipe coiling part 500 automatically follows the pipeline to be coiled and uncoiled, so that the normal work of the dredging equipment can be ensured when the dredging equipment advances and retreats.
Referring to fig. 5, the pipe coiling part 500 includes a pipe coiling device 510 and a pipe guiding assembly disposed on the pipe coiling device 510, the pipe guiding assembly includes a rotating bracket 520 and a driving part 530, the rotating bracket 520 is disposed on the pipe coiling device 510, and an outlet 521 is disposed on the rotating bracket 520 for discharging a pipe on the pipe coiling device 510, the driving part 530 is connected with the rotating bracket 520 for driving the rotating bracket 520 to make the outlet 521 rotate circumferentially around the pipe coiling device 510.
The pipe coiling device 510 can rotate to coil and release the pipeline according to the operation requirement, and when the pipe coiling device is operated specifically, the pipeline led out from the pipe coiling device 510 firstly passes through the leading-out opening 521 of the rotating bracket 520 and is led out. Referring to fig. 5 and 8, when the pipeline is required to be vertically led out from the surface of the pipe winder 510 upwards, the rotary bracket 520 can be driven by the driving component 530 to make the outlet 521 upwards, and the pipeline can be led out from the outlet 521 upwards; referring to fig. 9, when it is required to lay a pipeline along a predetermined path, the driving member 530 drives the rotary bracket 520 to keep the outlet 521 horizontal, and the pipeline can be horizontally led out; when it is required to extend into the sewage to suck the sludge, the driving unit 530 drives the rotary bracket 520 to make the outlet 521 downward, and the pipeline can be led out from the lower portion of the pipe rolling device 510. In other working conditions, the rotary bracket 520 can be driven to rotate as required so that the leading-out opening 521 faces different directions, and the pipeline is directly led out without being bent, so that the conveying of internal substances is facilitated, the damage caused by bending is avoided, and the service life is prolonged.
Referring to fig. 5 and 6, in some embodiments, the rotating bracket 520 is rotatably disposed on a fixed shaft of the tube roller 510. The rotary support 520 and the pipe coiling device 510 are arranged on the fixing shaft of the pipe coiling device 510 at the same time, and the coaxial arrangement enables the overall structure arrangement to be more compact, and is beneficial to the miniaturization of mechanical equipment.
With continued reference to fig. 6, in some embodiments, the driving member 530 includes a telescoping rod 531 and a linkage assembly 532 coupled to the telescoping rod 531, the linkage assembly 532 being coupled at one end to a driving end 5311 of the telescoping rod 531 and at an opposite end to the rotating bracket 520. Specifically. The link assembly 532 may include a plurality of links, and the rotation of the rotating bracket 520 is driven by the extension and retraction of the telescopic bar 531. It will be appreciated that in other embodiments, the rotating bracket 520 may be driven to rotate by a different driving function, such as a rotary driving member, for example, a motor, and the output shaft of the motor is connected to the center of the rotating bracket 520 to rotate the rotating bracket 520.
Referring to FIG. 5, in some embodiments, further comprising a tube-draining member 540 disposed at exit 521, tube-draining member 540 may be reciprocally translated between one side end face and the other side end face of tube roller 510 to drain tubes in an orderly fashion on the circumferential surface of tube roller 510. When the pipe rolling device 510 rolls and releases the pipeline in a rotating manner according to the operation requirement, the pipe discharging component 540 can continuously translate so as to discharge the pipeline on the surface of the pipe rolling device 510 in sequence. Specifically, the tube discharging part 540 includes a screw 541, a driving unit 542, a slider 543, and a guide unit 544. The screw rod 541 is disposed along the axial direction of the pipe winding machine 510 and can rotate around its own axis under the driving of the driving unit 542, the slider 543 is spirally fitted on the screw rod 541, and the guiding unit 544 is fixed on the slider 543 for guiding the pipeline led out from the pipe winding machine 510. In specific operation, the driving unit 542 can drive the screw rod 541 to rotate around its own axis, and then drive the surface-mounted slider 543 and the guiding unit 544 to move along the length direction of the screw rod 541, and the driving slider 543 and the guiding unit 544 move to one end of the screw rod 541 and then move back, so that when the pipe coiling device 510 performs rotary coiling or pipe releasing according to operation needs, the guiding unit 544 can precisely translate along the axial direction of the pipe coiling device 510 to the position where the pipe is led out in real time under the driving of the driving unit 542, and the purpose of sequentially discharging the pipe on the surface of the pipe coiling device 510 or smoothly leading out the pipe while the pipe coiling device 510 rotates is achieved.
Referring to fig. 10, in some embodiments, the guide unit 544 includes a limit block 5441 and a guide wheel 5442 provided within the limit block 5441. The pipeline can be led out through the limiting frame 5441, and the guiding wheel 5442 can continuously rotate when the pipeline is wound or released, so that the pipeline is rapidly wound or released. In other embodiments, the guiding unit 544 may have other structures, such as a guiding ring disposed on the sliding block 543, and the pipeline may pass through the guiding ring.
Referring to fig. 10, in some embodiments, the screw rod 541 is a reciprocating screw rod 541, reciprocating threads are formed on a surface of the reciprocating screw rod 541, and the reciprocating screw rod 541 cooperates with the slider 543 to enable the slider 543 and the guide unit 544 to automatically move in a reverse direction toward the other end of the screw rod 541 when moving to one end of the screw rod 541, so that the driving unit 542 does not need to be rotated in a reverse direction, the operation is more convenient, the operation is smoother, and the working efficiency is improved.
Referring to fig. 7 and 10, in some embodiments, the driving unit 542 includes a chain tray 5421 provided at an end of the lead screw 541 coaxially with the lead screw 541, and a driving chain 5422 fitted over the chain tray 5421. When the driving chain 5422 moves, the chain wheel 5421 can be driven to rotate, and the chain wheel 5421 simultaneously drives the lead screw 541 to rotate, so that the slider 543 and the guide unit 544 synchronously translate along the length direction of the lead screw 541.
As shown in fig. 5-6, the tube rolling device 510 can be mounted on a fixing frame 511 at the rear of the device body 100 and can be driven by a power chain 512 to rotate around its axis. At this time, the driving chain 5422 may be coupled to the power chain 512 of the roller tube 510, and when the power chain 512 drives the roller tube 510 to rotate, the driving chain 5422 is rotated through a linkage effect, so that the roller tube 510 and the guiding unit 544 can be operated synchronously. Through setting a proper transmission ratio, when the pipe coiling device 510 performs rotary coiling or releasing of the pipeline according to operation needs, the guide unit 544 can synchronously and precisely translate along the axial direction of the pipe coiling device 510 to a position where the pipeline is led out, and the purpose of sequentially discharging the pipeline on the surface of the pipe coiling device 510 or smoothly leading out the pipeline while the pipe coiling device 510 rotates is achieved. Preferably, the distance that the guide unit 544 can move by one pipe diameter per rotation of the pipe coiling device 510 can be ensured by setting a suitable pitch of the lead screw 541 and a transmission ratio between the driving chain 5422 and the transmission chain.
It is understood that in other embodiments, the guiding unit 544 may also be driven by another driving unit 542 to move along the length direction of the lead screw 541, for example, a multi-stage telescopic rod 531 or a cylinder may be arranged on the surface of the tube rolling device 510 along the axial direction thereof, the guiding unit 544 is mounted at an end of the multi-stage telescopic rod 531 or the cylinder, and the guiding unit 544 is driven by the multi-stage telescopic rod 531 or the cylinder to reciprocate along the axial direction of the tube rolling device 510. In addition, there are other implementations, which are not listed here.
Referring to fig. 5 and 6, in some embodiments, a compression member 550 is further included, disposed outside the pipe roller 510, for compressing the pipeline on the circumferential surface of the pipe roller 510. When the pipe coiling device 510 winds or releases the pipe, the pipe on the surface of the pipe coiling device 510 is tightly attached to the circumferential surface of the roller of the pipe coiling device 510 by being restrained by the tightening component 550, so that the whole device is cleaner; when the pipe coiling device 510 coils, the adjacent two layers of pipelines cannot slip, so that the normal operation of the rolling device 510 is facilitated, and the rolling efficiency is improved.
With continued reference to fig. 5, in some embodiments, compression member 550 includes a compression bracket 551 and a compression body 552. Wherein, the pressing bracket 551 is arranged around the circumference of the pipe coiling device 510, and the pressing body 552 is arranged on the pressing bracket 551 and is jointed with the pipeline on the surface of the pipe coiling device 510. The pressing body 552 on the pressing bracket 551 surrounding the roller tube 510 will tightly press the pipeline on the surface of the roller tube 510 to tightly adhere to the circumferential surface of the roller tube 510.
In some embodiments, compression stent 551 is circumferentially wrapped around the surface of roller tube 510. The pressing support 551 is arranged in a circumferential wrapping mode, so that the pipeline can be comprehensively pressed in the circumferential direction, and the pressing effect is enhanced.
Referring to fig. 8 and 9, in some embodiments, the pressing bracket 551 includes a plurality of pressing arms 5511 hinged in sequence, adjacent pressing arms 5511 are connected by an adjusting spring 5512 to adjust an included angle between the pressing arms 5511, and the pressing body 552 is provided at an end of the pressing bracket 551. When the pipeline is wound, along with the increase of the number of the layers of the pipeline wound on the surface of the roller of the pipe coiling device 510, the adjusting spring 5512 can be stretched to enable the two ends of the two pressing arms 5511 connected with the adjusting spring to expand outwards, the adjusting spring can be adjusted in real time to adapt to the situation that the pipeline on the surface of the pipe coiling device 510 is continuously increased, and the adaptability is stronger.
With continued reference to fig. 8, in some embodiments, compression body 552 includes an adjustment arm 5521 and a compression roller 5522 disposed at an end of adjustment arm 5521, and adjustment arm 5521 is hingedly coupled to an end of compression bracket 551. With the increase of the number of layers of pipelines wound on the surface of the roller of the pipe coiling device 510, the adjusting arm 5521 can rotate relative to the pressing bracket 551 to flexibly adapt to the increase of the number of layers of pipelines on the surface of the roller of the pipe coiling device 510, so that the pressing is more reliable, and the damage to the pipelines caused by applying excessive pressing force to the pipelines can be avoided; the compression roller 5522 can rotate freely, and has rolling friction with the pipeline, so that the normal rolling and releasing of the pipeline can not be hindered while the pipe is compressed.
Preferably, the pressing member 550 is fixed to the rotating bracket 520. The pressing part 550 can synchronously rotate along with the rotating bracket 520, so that the mutual interference between the pressing part 550 and the leading-out opening 521 on the rotating bracket 520 can be prevented when the rotating bracket 520 rotates, and the normal leading-out of a pipeline is further influenced; the provision of the pressing member 550 together with the rotating bracket 520 also makes the overall structural arrangement more compact. It is understood that in other embodiments, the pressing member 550 may be provided separately from the rotating bracket 520, and does not affect the implementation of the present invention, and is not limited thereto.
In some embodiments, the rotating bracket 520 and the driving member 530 for driving the rotating bracket 520 are correspondingly provided in plural numbers. As shown in fig. 5 and 6, two rotary supports 520 are arranged side by side and respectively and correspondingly arranged on two pipe rolling devices 510 arranged side by side, and the two pipe rolling devices 510 can be respectively used for rolling the material output pipeline 423 and communication and power pipelines; the rotating brackets 520 may be coaxially disposed with the pipe rolling device 510 and connected together by a connecting rod 522, and the driving members 530 are respectively disposed at both sides of the two rotating brackets 520, and may drive the two rotating brackets 520 to rotate synchronously, or may drive the two rotating brackets 520 to rotate independently, respectively, without limitation.
Of course, in some other embodiments, the roller pipe component 500 may not be provided, and only the material output pipeline 423, the power pipeline, and the communication pipeline are set to be long enough, and the dredging apparatus may directly drag the pipeline when moving forward continuously, so that the normal implementation of the technical scheme is not affected, and the present disclosure is not limited herein.
Referring to fig. 11, in some embodiments, the power switching arm 600 is further included on the device body 100 for lifting the power pipeline to connect the power pipeline to the power device on the ground.
The power of the dredging equipment can be provided by a power source carried by the equipment. In order to continuously work the dredging device to improve the working efficiency, the power of the dredging device can be provided by the power device arranged at the wellhead on the ground, and at the moment, the power switching arm 600 can be used for lifting the power pipeline of the dredging device to connect the power pipeline with the power device on the ground. Particularly, in the working condition of construction in a longer underground box culvert, when the whole dredging equipment moves from one wellhead to the next wellhead, the main power pipeline can be wound up, and meanwhile, the standby power pipeline is lifted to the wellhead by the power switching arm 600 to be connected with the standby power source; after the main power source is moved to the wellhead on the ground, the power switching arm 600 lifts the main power pipeline to the wellhead to be connected with the main power source again, meanwhile, the standby power pipeline is disconnected with the standby power source, and one-time power switching operation is completed. The desilting equipment moves to and all carries out once power switching operation to each well head department of laying along the underground box culvert and can guarantee going on continuously of whole desilting work, and the silt cleaning work of whole underground box culvert has effectively been promoted until final completion.
In some embodiments, the scooping mechanism 300 includes a scoop arm 310 and a scoop 320. Wherein, one end of the shoveling arm 310 is rotatably connected to the apparatus body 100, and the shoveling bucket 320 is connected to the other end of the shoveling arm 310, for shoveling sludge under the driving of the shoveling arm 310. Specifically, the shoveling arm 310 can be driven by the shoveling cylinder 311 to rotate for shoveling forward at a high position, a low position or horizontally, and the shoveling bucket 320 can be rotatably arranged at the end of the shoveling arm 310 under the driving of a rotary driving mechanism such as a motor or a cylinder, so that the sludge at each position can be shoveled at various angles; also as shown in fig. 3, the scooping hopper 320 may dump the scooped sludge into a screening output mechanism 400, such as a screen 410. Of course, the scooping mechanism 300 may take other configurations as well, and is not limited thereto.
Referring to fig. 1, in some embodiments, the travel mechanism 200 includes a travel track 210. The walking track 210 can adapt to complex underground topography, can overcome the resistance of sludge and move forward, and can bear larger weight. In other embodiments, the travel mechanism 200 may employ simple travel wheels, and is not limited herein.
In some embodiments, a body lifting mechanism 700 is further included for lifting the apparatus body 100. Specifically, the machine body lifting mechanism 700 may be a jacking cylinder 710 as shown in fig. 11, the equipment body 100 can be lifted by the jacking cylinder 710, the equipment body 100 with the free lifting function can adapt to the size change of the underground box culvert, and the passing speed of the whole equipment in the underground is increased; after the equipment body 100 is lifted, the maintenance of the contained components is also facilitated; the lifting also facilitates quick discharge of the solid matter stored in the solid storage member 430.
Referring to fig. 1, in some embodiments, the apparatus further includes a camera 800 disposed on the apparatus body 100, and the camera 800 is electrically connected to a display device on the ground, and is configured to transmit the captured video information to the display device in real time and display the video information on the display device. The underground working condition can be monitored in real time through the camera device 800, and the specific situation of dredging operation can be conveniently known from the ground in real time.
Referring to fig. 1, in some embodiments, the apparatus further includes an illumination device 900 provided on the apparatus body 100 for providing illumination for underground dredging work.
In some embodiments, further comprising an automatic control system, the automatic control system comprising: a pressure sensor and a control module. The pressure sensor is arranged in the shoveling and digging mechanism 300 and used for detecting resistance borne by the shoveling and digging mechanism 300 during shoveling and digging actions, the input end of the control module is connected with the pressure sensor to receive resistance signals detected by the pressure sensor, and the control end of the control module is respectively connected with the traveling mechanism 200, the shoveling and digging mechanism 300 and the screening output mechanism 400 to control actions of the mechanisms.
Specifically, the pressure sensor may be provided in a hydraulic circuit of the shovel cylinder 311 that drives the shovel arm 310 to operate, and the corresponding relationship between the hardness (water content) of the sludge and the pressure of the hydraulic oil is edited and stored in the control module in advance by detecting the pressure of the hydraulic oil in the hydraulic circuit to directly reflect the resistance force that the shovel 320 and the sludge are in contact with each other. Wherein, pressure sensor, control module can have multiple option, for example pressure sensor can select for use the pressure sensor that German yi fu men electronics limited company model is PT5501, control module can select for use the controller that German yi fu men electronics limited company model is IFM CR0200, use C language and programming software codesys2.3 programming and store the procedure in control module, dig the in-process pressure sensor and can continuously detect the resistance that shovels and dig mechanism 300 and implement when digging the action, control module can judge whether of mud and the hardness (the moisture content) of mud according to the resistance condition, specifically can include following several kinds of condition:
① when the resistance value is zero, the control module judges that no sludge exists, controls the running mechanism 200 to act, and drives the equipment body 100 to move forward to the next set distance for sludge shoveling;
② when the resistance value is at a low level, the control module judges that the water content of the sludge is high, and controls the mud pumping-out component 440 to pump the sludge directly outwards through the material output pipeline 423;
③ when the resistance value is at a high level and the control module judges that the sludge is hard, i.e. the water content is low, the control module controls the shoveling mechanism 300 to shovel the sludge and sieve the sludge by the sieve 410, the fluid material sieved out is pumped out by the fluid pumping part 420, and the coarse solid material sieved out by the sieve 410 directly enters the solid storage part 430 to be stored;
④ when the resistance value is very large, the control module judges that hard materials such as large stones are met or other abnormal conditions exist, the control module controls the dredging equipment to stop, and the operator can timely handle the conditions after finding the conditions.
The dredging equipment comprising the automatic control system can automatically walk, automatically sense the texture of sludge and automatically shovel, dig and sieve for output, has higher automation degree, and can continuously classify the sludge and convey the sludge to ground treatment equipment, thereby completing the dredging task more efficiently; workers do not need to go into the well completely, and the dredging work is safer and more reliable.
In other embodiments of the present invention, a method for dredging is provided, which includes the steps of:
(1) controlling the dredging equipment to enter the working section of the underground box culvert, and driving the equipment body 100 of the dredging equipment to move forwards along the underground box culvert by the walking mechanism 200;
(2) when the sludge in front of the dredging equipment is in a slurry form, the slurry pumping-out part 440 of the dredging equipment pumps the slurry out directly through the material output pipeline 423; when the sludge moved to the front of the equipment body 100 by the dredging equipment is hard and has low water content, namely is in a non-slurry state, the shoveling mechanism 300 shovels and pours the sludge into the screening output mechanism 400, fluid substances screened by the screen 410 of the screening output mechanism 400 are pumped outwards by the fluid pumping part 420, and the solid substances screened by the screen 410 directly enter the solid storage part 430 to be stored;
(3) when the dredging equipment moves to the tail end of the working section of the underground box culvert, the walking mechanism 200 stops driving the equipment body 100 to move forwards.
The method can be manually operated, and can also automatically walk, automatically sense the hardness (water content) of the sludge and automatically shovel, dig and sieve for output under the control of an automatic control system, has higher automation degree, and can continuously classify the sludge and convey the sludge to ground treatment equipment, thereby completing the dredging task more efficiently; workers do not need to go into the well completely, and the dredging work is safer and more reliable.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (12)

1. A dredging device, characterized in that, the dredging device includes:
an apparatus body;
the travelling mechanism is arranged at the bottom of the equipment body and used for driving the equipment body to move;
the shoveling and digging mechanism is arranged at the front part of the equipment body and is used for shoveling and digging sludge;
and the screening output mechanism is arranged on the equipment body and used for receiving the sludge shoveled by the shoveling and digging mechanism and screening and outputting the sludge.
2. The dredging apparatus of claim 1, wherein the screening output mechanism comprises:
the screening device is arranged adjacent to the shoveling mechanism;
the fluid pumping component is arranged below the screener and used for receiving the fluid substances screened by the screener and pumping the fluid substances outwards;
a solids storage member adjacent the screen for receiving and storing solids material screened by the screen.
3. The dredging apparatus according to claim 2, wherein the fluid pumping member comprises a fluid receiving hopper, a fluid output pump and a material output line, the fluid output pump is connected with the fluid receiving hopper at a suction end thereof, and the fluid output pump is connected with the material output line at a pump outlet end thereof.
4. The dredging apparatus of claim 1, wherein the sieving output mechanism further comprises a slurry pump-out member provided on the apparatus body for sucking in the flowable slurry and pumping it out.
5. The dredging apparatus according to claim 1, further comprising a roller pipe member provided on the apparatus body for winding or releasing the pipeline on the apparatus body when the apparatus body is walking.
6. The dredging apparatus of claim 5, wherein the roller pipe member comprises a roller pipe and a pipeline guide assembly provided on the roller pipe, the pipeline guide assembly comprising:
the rotary support is arranged on the pipe coiling device, and a leading-out port is arranged on the rotary support and used for leading out a pipeline on the pipe coiling device;
and the driving component is connected with the rotating bracket and used for driving the rotating bracket to enable the leading-out opening to rotate around the pipe coiling device in the circumferential direction.
7. The dredging apparatus of claim 6, wherein the pipeline guide assembly further comprises a drain member disposed at the outlet, the drain member reciprocally translatable between one side end face and another side end face of the pipe roller for ordered draining of the pipe at the circumferential surface of the pipe roller; the calandria part includes:
the screw rod is arranged along the axial direction of the pipe coiling device and can rotate around the axis of the screw rod under the driving of the driving unit;
the sliding block is spirally matched and installed on the screw rod; and
and the guide unit is fixed on the sliding block and used for guiding the pipeline led out from the pipe coiling device.
8. The dredging apparatus of claim 6, further comprising a pressing member provided outside the pipe roller for pressing the pipeline on the circumferential surface of the pipe roller.
9. The dredging apparatus of claim 1, further comprising a power switching arm provided on the apparatus body for lifting the power line to connect with the power apparatus on the ground.
10. The dredging apparatus of claim 1, wherein the scooping mechanism comprises:
one end of the shoveling arm is rotatably connected to the equipment body;
and the shovel bucket is connected with the other end of the shovel arm and is used for shoveling and digging sludge under the driving of the shovel arm.
11. Dredging arrangement according to any one of the claims 1-10, further comprising an automatic control system, which automatic control system comprises:
the pressure sensor is arranged in the shoveling and digging mechanism and used for detecting resistance borne by the shoveling and digging mechanism when shoveling and digging actions are carried out;
the control module is connected with the pressure sensor to receive the resistance signal detected by the pressure sensor, and the control module is connected with the travelling mechanism, the shoveling mechanism and the screening output mechanism to control the travelling mechanism, the shoveling mechanism and the screening output mechanism to act.
12. A dredging method is characterized by comprising the following steps:
(1) controlling the dredging equipment to enter the working section of the underground box culvert, and driving an equipment body of the dredging equipment to move forwards along the underground box culvert by a travelling mechanism of the dredging equipment;
(2) when the sludge in front of the equipment body is in a slurry form, a slurry pumping-out component of the dredging equipment directly pumps out the slurry through the material output pipeline; when the sludge moved to the front of the equipment body by the dredging equipment is in a non-slurry state, a shoveling mechanism of the dredging equipment shovels and digs the sludge and pours the sludge into a screening output mechanism of the dredging equipment, a screen in the screening output mechanism screens the sludge, fluid substances screened by the screen are pumped outwards by a fluid pumping part in the screening output mechanism, and solid substances screened by the screen directly enter a solid storage part contained in the screening output mechanism to be stored;
(3) when the dredging equipment moves to the tail end of the working section of the underground box culvert, the walking mechanism stops driving the equipment body to move forwards.
CN201910945750.9A 2019-09-30 2019-09-30 Dredging equipment and dredging method Pending CN110670710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910945750.9A CN110670710A (en) 2019-09-30 2019-09-30 Dredging equipment and dredging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910945750.9A CN110670710A (en) 2019-09-30 2019-09-30 Dredging equipment and dredging method

Publications (1)

Publication Number Publication Date
CN110670710A true CN110670710A (en) 2020-01-10

Family

ID=69080687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910945750.9A Pending CN110670710A (en) 2019-09-30 2019-09-30 Dredging equipment and dredging method

Country Status (1)

Country Link
CN (1) CN110670710A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114885644A (en) * 2022-05-24 2022-08-12 长兴县水产与农机中心 Automatic seeder suitable for ditch both sides are planted

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242113A (en) * 1996-03-08 1997-09-16 Ube Ind Ltd Dredging and disposing device
JPH09264036A (en) * 1996-03-29 1997-10-07 Ube Ind Ltd Dredging and transporting device
CN104815827A (en) * 2015-04-13 2015-08-05 长沙智汛通环保科技有限公司 Drainage pipe network dredging robot and dredging method thereof
CN106351327A (en) * 2016-11-04 2017-01-25 长沙伟诺机电有限公司 Intelligent dredging vehicle for municipal sewer line
CN209443564U (en) * 2018-10-16 2019-09-27 长沙智汛通环保科技有限公司 A kind of underground piping desilting equipment with novel mud mode of movement
CN211037255U (en) * 2019-09-30 2020-07-17 湖南奇思环保设备制造有限公司 Dredging equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09242113A (en) * 1996-03-08 1997-09-16 Ube Ind Ltd Dredging and disposing device
JPH09264036A (en) * 1996-03-29 1997-10-07 Ube Ind Ltd Dredging and transporting device
CN104815827A (en) * 2015-04-13 2015-08-05 长沙智汛通环保科技有限公司 Drainage pipe network dredging robot and dredging method thereof
CN106351327A (en) * 2016-11-04 2017-01-25 长沙伟诺机电有限公司 Intelligent dredging vehicle for municipal sewer line
CN209443564U (en) * 2018-10-16 2019-09-27 长沙智汛通环保科技有限公司 A kind of underground piping desilting equipment with novel mud mode of movement
CN211037255U (en) * 2019-09-30 2020-07-17 湖南奇思环保设备制造有限公司 Dredging equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114885644A (en) * 2022-05-24 2022-08-12 长兴县水产与农机中心 Automatic seeder suitable for ditch both sides are planted
CN114885644B (en) * 2022-05-24 2023-02-14 长兴县水产与农机中心 Automatic seeder suitable for ditch both sides are planted

Similar Documents

Publication Publication Date Title
KR101283731B1 (en) A dredging robot of burpipe conduit for transfer car
CN211037255U (en) Dredging equipment
CN106351327A (en) Intelligent dredging vehicle for municipal sewer line
CN108797785A (en) The dredging Accrete clearing device of drainage pipeline
CN209556114U (en) A kind of municipal pipeline dredging device
CN110512683B (en) Underwater grab type grid auger dredging robot
CN215563261U (en) Scalable differential screw drive pipeline desilting robot
CN111960198A (en) Constant-tension winding device and robot
CN110670708A (en) Hidden culvert dredging system
CN110670710A (en) Dredging equipment and dredging method
CN107217735B (en) Pipeline cleaning robot and application method thereof
CN215165917U (en) Underground sump cleaning robot
KR101201255B1 (en) Circle sewer for dredging and repair apparatus
CN107780523B (en) A kind of manhole dirt cleaning device
CN105862952A (en) Pipe culvert excavation type loading machine
CN116971475A (en) Drainage pipeline dredging equipment
CN210766955U (en) Underwater grab bucket type grid auger desilting robot
CN106996124A (en) Accrete clearing device under intelligent water
CN114197625B (en) Automatic dredging device for pipeline
CN101693243A (en) Dredging system of sewage pipeline with large-pipe diameter
WO2023168929A1 (en) Efficient underwater dredging robot
CN206737007U (en) Accrete clearing device under intelligent water
CN206562662U (en) Digging type block clearing silt dredging device
CN112828910B (en) Tunnel cleaning and obstacle removing robot and construction method thereof
CN218148029U (en) Stifled desilting equipment is prevented to town road engineering

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination