CN218204877U - Water pumping and mud sucking device for cleaning dead corners of pipeline - Google Patents

Abstract

The utility model relates to a pipeline desilting equipment field specifically discloses a mud device is inhaled in drawing water of pipeline no dead angle clearance, and it includes the automobile body, install the dredge pump on the automobile body, be connected with the dredge pipe on the dredge pump, the output intercommunication of dredge pipe has and is located the internal silt case of automobile, the one end of cisoid in its direction of advance articulates on the automobile body has the push pedal of base and pipeline diapire profile adaptation, be provided with on the automobile body and be used for ordering about the actuating mechanism of tight/keep away from the pipeline diapire is supported on the push pedal base, seted up in the push pedal with the mud mouth of inhaling of dredge pipe intercommunication, the dredge pipe makes for soft materials. The application can improve thereby the bulge on the pipeline diapire or pipeline seam hinder the automobile body and go forward for the problem that the desilting work brought inconvenience.

Description

Water pumping and mud sucking device for cleaning dead corners of pipeline

Technical Field

The utility model relates to a pipeline desilting equipment field especially relates to a mud device is inhaled in pumping of pipeline no dead angle clearance.

Background

In order to rapidly drain rainwater and domestic sewage, drainage pipelines are usually arranged under the ground of a city. After a certain period of time, sludge can be deposited in the drainage pipeline, and the pipeline can be blocked due to excessive sludge deposition. In order to ensure the normal drainage function of the pipeline, the sludge in the pipeline needs to be cleaned.

In the related art, the Chinese patent with the publication number of CN215166436U provides a dredging device for a water supply and drainage pipeline, which comprises a vehicle body, a stirring dredging structure and a sludge collecting and treating structure. The stirring and dredging structure comprises a stirring paddle, a sprinkler head, a water suction pump and a water tank, after the water in the water tank is pumped out by the water suction pump, the water is sprayed out through the sprinkler head, and the stirring paddle rotates to scatter the silt. The sludge collecting and treating structure comprises a sludge collecting vehicle, a sludge pumping motor, a sludge guide pipe, a sludge inlet pipe and a sludge suction port, wherein the sludge pumping motor is opened, sludge after being scattered is sucked into the sludge pumping motor through the sludge suction port, and then the sludge is guided into the sludge collecting vehicle through the sludge guide pipe.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: in order to fully clean the sludge at the bottom of the pipeline, the inlet end of the sludge inlet pipe is generally required to be tightly attached to the bottom wall of the pipeline; the pipeline is usually provided with a plurality of bulges adhered to the bottom wall of the pipeline, and seams also exist among the pipelines, so that when the inlet end of the mud inlet pipe is abutted against the bulges or the pipeline seams adhered to the bottom wall of the pipeline in the advancing process of the vehicle body, the vehicle body is hindered from advancing, and the dredging operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

Thereby hinder the automobile body in order to improve the arch on the pipeline diapire or pipeline seam and go forward for the problem that desilting work brought inconvenience, this application provides a pumping suction dredge that pipeline does not have dead angle clearance.

The application provides a pair of pumping suction mud device of pipeline no dead angle clearance adopts following technical scheme:

the utility model provides a mud device is inhaled in drawing water of no dead angle clearance of pipeline, includes the automobile body, install the dredge pump in the automobile body, be connected with the dredge pipe on the dredge pump, the output intercommunication of dredge pipe has and is located sludge box in the automobile body, it has the push pedal of base and pipeline diapire profile adaptation to articulate in the one end of its advancing direction on the automobile body, be provided with on the automobile body and be used for ordering about the actuating mechanism of pipeline diapire is supported tightly/kept away from on the push pedal base, set up in the push pedal with the mud mouth of inhaling of dredge pipe intercommunication, the dredge pipe is made for soft materials.

Through adopting above-mentioned technical scheme, at the in-process that the automobile body gos forward, actuating mechanism drives the push pedal base and supports tightly in the pipeline diapire, and the push pedal promotes the silt of pipeline diapire, and simultaneously, under the suction effect of dredge pump, silt passes through mud suction mouth and suction pipe, then gets into the silt case; when the push pedal contradicts bellying or pipeline joint on the pipeline diapire, actuating mechanism orders about the push pedal base and keeps away from the pipeline diapire, and the bellying or pipeline joint on the pipeline diapire can be avoided to the push pedal, makes the automobile body go forward unhindered to thereby it hinders the automobile body and gos forward for desilting work inconvenient problem to have improved bellying or pipeline joint on the pipeline diapire.

Optionally, the vehicle body is hinged with a support rod, one end of the support rod, which is far away from the vehicle body, is fixedly connected with the push plate, and the driving mechanism is used for driving the support rod to turn towards the direction close to/far away from the bottom wall of the pipeline.

By adopting the technical scheme, when the push plate is abutted against the obstacle in the pipeline, the driving mechanism drives the supporting rod to turn towards the direction far away from the bottom wall of the pipeline, so that the push plate is driven to be far away from the bottom wall of the pipeline; after the barrier in the pipeline is avoided to the push pedal, actuating mechanism orders about the bracing piece and overturns towards the direction that is close to the pipeline diapire to order about push pedal and pipeline diapire to resume and support tightly.

Optionally, the driving mechanism includes an electric push rod mounted on the vehicle body, a cylinder of the electric push rod is hinged to the vehicle body, and a piston rod is hinged to the support rod.

By adopting the technical scheme, when the push plate is abutted against the obstacle in the pipeline, the piston rod of the electric push rod retracts to drive the support rod to turn in the direction away from the bottom wall of the pipeline, so that the push plate is driven to be away from the bottom wall of the pipeline; after the barrier in the pipeline is avoided to the push pedal, electric putter's piston rod stretches out, orders about the bracing piece and overturns towards the direction that is close to the pipeline diapire to order about the push pedal and resume to support tightly with the pipeline diapire.

Optionally, the bracing piece includes main rod and the vice pole that the slip cup jointed, the confession has been seted up to the main rod tip vice pole male holding tank, electric putter's piston rod articulate in on the main rod, be provided with in the holding tank and be used for the response the barrier is contradicted to the push pedal and orders about electric putter's piston rod withdrawal/control mechanism who stretches out.

By adopting the technical scheme, when the push plate is abutted against the barrier in the pipeline, the control mechanism controls the piston rod of the electric push rod to retract, and drives the support rod to turn in the direction away from the bottom wall of the pipeline, so that the push plate is driven to be away from the bottom wall of the pipeline; after the push plate avoids the barrier in the pipeline, the control mechanism controls the piston rod of the electric push rod to stretch out, and the supporting rod is driven to turn towards the direction close to the bottom wall of the pipeline, so that the push plate and the bottom wall of the pipeline are driven to recover and abut tightly.

Optionally, control mechanism include the rigid coupling in the auxiliary rod is kept away from the pressure sensor of push pedal one end, pressure sensor with electric putter control connection, be provided with the cover in the holding tank and locate pressure sensor week side's spring, the axial length of spring under natural state is greater than pressure sensor follows the axial thickness of spring.

By adopting the technical scheme, in the advancing process of the vehicle body, the push plate pushes sludge in the pipeline, the pressure of the sludge on the push plate drives the auxiliary rod to slide in the accommodating groove and compress the spring, the compression deformation of the spring is not enough to enable the pressure sensor to be abutted against the bottom wall of the accommodating groove, and the piston rod of the electric push rod does not move; when the push plate abuts against an obstacle in the pipeline, the pressure applied to the push plate is increased, the auxiliary rod continues to compress the spring until the pressure sensor abuts against the bottom wall of the accommodating groove, and at the moment, the electric push rod which is in control connection with the pressure sensor retracts into the piston rod of the electric push rod to drive the support rod to rotate around the hinged shaft in the direction away from the bottom wall of the pipeline, so that the push plate is driven to be away from the bottom wall of the pipeline; then the push pedal no longer receives pressure, and the spring resets under the effect of deformability, and pressure that pressure sensor received becomes zero, stretches out its piston rod with pressure sensor control connection's electric putter this moment, drives the bracing piece and rotates around the direction that articulated axial is close to the pipeline diapire, and then orders about the push pedal and resumes to support tightly with the pipeline diapire.

Optionally, a water pump is installed on the vehicle body, a water pipe is connected to the water pump, an input end of the water pipe is communicated with a water tank, an output end of the water pipe is located at one end, along the advancing direction of the vehicle body, the output end of the water pipe is provided with a plurality of water spray nozzles, and the plurality of water spray nozzles are inclined towards the inner wall of the pipeline along different directions respectively.

Through adopting above-mentioned technical scheme, at the in-process that the automobile body gos forward, the water pump draws water from the water tank, and water is washed away the different positions of pipeline inner wall from a plurality of water jet towards equidirectional blowout through the water pipe, on the sewage that washes away got off fell the pipeline diapire, in sucking the silt case via the dredge pump again, so be favorable to realizing the no dead angle clearance of pipeline.

Optionally, the vehicle body is provided with side wheels on both sides of the advancing track, and the vehicle body is provided with an elastic mechanism for driving the side wheels to elastically abut against the inner side wall of the pipeline.

Through adopting above-mentioned technical scheme, when the automobile body when advancing along the pipeline diapire that is the cambered surface, the side wheel plays supporting role in automobile body both sides for the automobile body advances more steadily.

Optionally, a collecting hopper for collecting large sundries is arranged at the bottom of one end, far away from the push plate, of the vehicle body.

Through adopting above-mentioned technical scheme, when having piled up some bold debris that are difficult to be siphoned away by the dredge pipe in push pedal the place ahead, the push pedal can lift up and avoid the bold debris in automobile body the place ahead, and the automobile body continues the in-process that gos forward, is located the collection fill at automobile body rear portion and can collects the bold debris, is favorable to the comprehensive clearance of pipeline.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the push plate and the driving mechanism, in the advancing process of the vehicle body, the driving mechanism drives the bottom edge of the push plate to abut against the bottom wall of the pipeline, the push plate pushes the sludge on the bottom wall of the pipeline, and meanwhile, under the suction action of the sludge suction pump, the sludge passes through the sludge suction port and the sludge suction pipe and then enters the sludge box; when the push plate is abutted against the bulges or the pipeline joints on the bottom wall of the pipeline, the bottom edge of the push plate is driven by the driving mechanism to be far away from the bottom wall of the pipeline, so that the problem that the bulges or the pipeline joints on the bottom wall of the pipeline block the vehicle body to advance, and inconvenience is brought to dredging work is solved;

2. by arranging the supporting rod, the electric push rod and the control mechanism, when the push plate is abutted against a bulge on the bottom wall of the pipeline or a pipeline joint, the control mechanism controls the piston rod of the electric push rod to retract, so that the supporting rod is driven to turn around the hinge shaft towards the direction far away from the bottom wall of the pipeline, and the push plate is driven to be far away from the bottom wall of the pipeline; after the push plate avoids the barrier, the control mechanism controls the piston rod of the electric push rod to extend out, so that the support rod is driven to turn around the hinge shaft towards the direction close to the bottom wall of the pipeline, and the push plate is driven to be abutted against the bottom wall of the pipeline;

3. through setting up water pump, water tank, water pipe and water jet, at the in-process that the automobile body gos forward, the water pump draws water from the water tank, and water is washed away to the different positions of pipeline inner wall from the blowout of a plurality of water jets towards the equidirectional through the water pipe, on the sewage that washes away fell to the pipeline diapire, in sucking the silt case via the dredge pump again, so be favorable to realizing the no dead angle clearance of pipeline.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.

Fig. 3 is an enlarged schematic view of a portion B in fig. 2.

Reference numerals: 1. a vehicle body; 21. a dredge pump; 22. a mud suction pipe; 23. a sludge tank; 24. a sludge suction port; 25. a blow-off pipe; 26. a valve; 31. pushing the plate; 32. a support bar; 321. a main rod; 322. an auxiliary rod; 323. accommodating grooves; 33. a pressure sensor; 34. a spring; 35. an electric push rod; 36. a mounting frame; 41. a water pump; 42. a water pipe; 43. a water tank; 44. a spray head; 45. a water jet; 46. a water filling port; 51. a side wheel; 52. a strut; 53. an elastic member; 54. a bottom wheel; 55. a rotating shaft; 6. a collecting hopper.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a pumping and mud sucking device for cleaning no dead angle of a pipeline. Referring to fig. 1 and 2, the water pumping and mud sucking device for cleaning the dead angle of the pipeline comprises a vehicle body 1, a mud sucking pump 21 is installed in the vehicle body 1, a mud sucking pipe 22 is connected to the mud sucking pump 21, an output end of the mud sucking pipe 22 is communicated with a mud tank 23 located in the vehicle body 1, a push plate 31 with a bottom edge matched with the profile of the bottom wall of the pipeline is hinged to one end of the vehicle body 1 in the forward direction, a driving mechanism for driving the bottom edge of the push plate 31 to be tightly abutted against/away from the bottom wall of the pipeline is arranged on the vehicle body 1, a mud sucking port 24 communicated with the mud sucking pipe 22 is formed in the push plate 31, and the mud sucking pipe 22 is made of a soft material, in the embodiment, the mud sucking pipe 22 is a PVC hose.

In the advancing process of the vehicle body 1, the driving mechanism drives the bottom edge of the push plate 31 to abut against the bottom wall of the pipeline, the push plate 31 pushes the sludge on the bottom wall of the pipeline, and meanwhile, under the suction action of the sludge suction pump 21, the sludge passes through the sludge suction port 24 and the sludge suction pipe 22 and then enters the sludge box 23; when the push plate 31 collides with the bulges or the pipeline joints on the bottom wall of the pipeline, the driving mechanism drives the bottom edge of the push plate 31 to be far away from the bottom wall of the pipeline, and the push plate 31 can avoid the bulges or the pipeline joints on the bottom wall of the pipeline, so that the advance of the vehicle body 1 is not hindered, and the problem that the projections or the pipeline joints on the bottom wall of the pipeline block the advance of the vehicle body 1 to bring inconvenience to the desilting work is solved.

Referring to fig. 1 and 3, a mounting frame 36 is fixedly connected to the vehicle body 1, a support rod 32 is hinged to the mounting frame 36, the support rod 32 includes a main rod 321 and an auxiliary rod 322 which are slidably sleeved, one end of the main rod 321, which is close to the vehicle body 1, is hinged to the mounting frame 36, one end of the auxiliary rod 322, which is far away from the vehicle body 1, is fixedly connected to the push plate 31, and a driving mechanism is used for driving the support rod 32 to turn in a direction close to/far away from the bottom wall of the pipeline. The driving mechanism comprises an electric push rod 35 arranged on the vehicle body 1, a cylinder body of the electric push rod 35 is hinged on the vehicle body 1, and a piston rod is hinged on the main rod 321.

Referring to fig. 3, the end of the main rod 321 is provided with a receiving groove 323 into which the auxiliary rod 322 is inserted, and the receiving groove 323 is provided with a control mechanism for sensing that the push plate 31 collides with an obstacle and driving the piston rod of the electric push rod 35 to retract/extend. The control mechanism comprises a pressure sensor 33 fixedly connected to one end of the auxiliary rod 322 far away from the push plate 31, and the pressure sensor 33 is in control connection with an electric push rod 35. The accommodating groove 323 is provided with a spring 34 sleeved on the periphery of the pressure sensor 33, one end of the spring 34 is fixedly connected to one end of the auxiliary rod 322 far away from the push plate 31, and the other end is fixedly connected to the bottom wall of the accommodating groove 323. The axial length of the spring 34 in the natural state is larger than the thickness of the pressure sensor 33 in the axial direction of the spring 34, and the axial length of the spring 34 in the fully compressed state is smaller than the thickness of the pressure sensor 33 in the axial direction of the spring 34.

During the advance of the vehicle body 1, the push plate 31 pushes the sludge in the pipeline, the pressure of the sludge on the push plate 31 drives the secondary rod 322 to slide in the accommodating groove 323 and compress the spring 34, at this time, the compression deformation of the spring 34 is not enough to enable the pressure sensor 33 to be in interference with the bottom wall of the accommodating groove 323, and the piston rod of the electric push rod 35 does not move.

When the push plate 31 collides the barrier in the pipeline, the pressure that push plate 31 received increases, vice pole 322 continues compression spring 34, conflict with the diapire of holding tank 323 until pressure sensor 33, its piston rod is retraced with pressure sensor 33 control connection's electric putter 35 this moment, thereby drive bracing piece 32 and rotate around the direction that articulated axial kept away from the pipeline diapire, and then drive push plate 31 and keep away from the pipeline diapire, so, the bulge or pipeline seam on the pipeline diapire can be avoided to push plate 31, make automobile body 1 advance unhindered.

After the push plate 31 is far away from the pipeline diapire, the push plate 31 no longer receives pressure, the spring 34 resets under the effect of deformability, the pressure that the pressure sensor 33 received becomes zero, stretch out its piston rod with the electric putter 35 of pressure sensor 33 control connection this moment, drive the bracing piece 32 and rotate around the direction that articulated axial is close to the pipeline diapire, and then order about the push plate 31 and resume to support tightly with the pipeline diapire, the push plate 31 can continue to promote silt forward.

In order to clean the pipeline without dead angles, referring to fig. 1 and 2, a water pump 41 is installed on the vehicle body 1, a water pipe 42 is connected to the water pump 41, an input end of the water pipe 42 is communicated with a water tank 43, an output end of the water pipe 42 is located at one end of the vehicle body 1 in the forward direction, a spray head 44 is installed at an output end of the water pipe 42, a plurality of water spray ports 45 are arranged on the spray head 44, the plurality of water spray ports 45 incline towards the inner wall of the pipeline respectively along different directions, and a water filling port 46 communicated with the water tank 43 is formed in the top of the vehicle body 1.

Before the pipeline is cleaned, water is filled into the water tank 43 through the water filling port 46, in the advancing process of the vehicle body 1, the water pump 41 pumps water from the water tank 43, the water is sprayed out from the plurality of water spraying ports 45 in different directions through the water pipe 42 to wash different parts of the inner wall of the pipeline, the washed sewage and sludge fall onto the bottom wall of the pipeline and are sucked into the sludge tank 23 through the sludge suction pipe 22, and therefore dead-angle-free cleaning of the pipeline is facilitated.

In addition, referring to fig. 1 and 2, a drain pipe 25 communicating with the sludge tank 23 is connected to the bottom of the vehicle body 1, and a valve 26 is installed on the drain pipe 25. When the sludge tank 23 is filled with sludge, the sewage drain 25 is connected to a sludge collecting and treating apparatus, and the sludge in the sludge tank 23 is discharged from the sewage drain 25 by opening the valve 26.

Referring to fig. 1, four bottom wheels 54 are installed at the bottom of the vehicle body 1, in order to make the vehicle body 1 move more smoothly in the pipeline, the vehicle body 1 is installed with side wheels 51 at both sides of the moving track, and the vehicle body 1 is provided with an elastic mechanism for driving the side wheels 51 to elastically abut against the inner side wall of the pipeline. Specifically, the equal rigid coupling in automobile body 1 both sides has the pivot 55 that is vertical setting, rotates on the pivot 55 and is provided with branch 52, and side wheel 51 rotates the one end that sets up at branch 52 and keep away from automobile body 1, and elastic mechanism is including setting up the elastic component 53 between branch 52 and automobile body 1, and in this embodiment, the torsional spring on pivot 55 is located for the cover to elastic component 53, and the both ends of torsional spring rigid coupling respectively is on pivot 55 and branch 52.

When the vehicle body 1 advances along the pipeline bottom wall which is an arc surface, the elastic piece 53 enables the side wheels 51 to abut against the inner side wall of the pipeline, and the side wheels 51 play a supporting role on two sides of the vehicle body 1, so that the vehicle body 1 can advance more stably.

In the advancing process of the vehicle body 1, a plurality of large sundries which are difficult to suck away by the mud suction pipe 22 are accumulated in front of the push plate 31, in order to clean the large sundries, referring to fig. 1, a collecting hopper 6 for collecting the large sundries is fixedly connected to the bottom of one end, far away from the push plate 31, of the vehicle body 1, the bottom of the collecting hopper 6 is an arc surface matched with the contour of the bottom wall of the pipeline, and a gap is reserved between the bottom surface of the collecting hopper 6 and the bottom wall of the pipeline.

In the advancing process of the vehicle body 1, the push plate 31 can be lifted and avoids large sundries in front of the vehicle body 1, the vehicle body 1 continues to advance, and the collecting hopper 6 positioned at the rear part of the vehicle body 1 can collect the large sundries, so that the comprehensive cleaning of a pipeline is facilitated.

The implementation principle of the pumping and mud sucking device for cleaning the dead angle-free pipeline of the embodiment of the application is as follows: in the advancing process of the vehicle body 1, the water pump 41 pumps water from the water tank 43, the water is sprayed out from the plurality of water spraying ports 45 in different directions through the water pipe 42 to wash different parts of the inner wall of the pipeline, and the washed sewage and sludge fall onto the bottom wall of the pipeline; the bottom edge of the push plate 31 is tightly abutted against the bottom wall of the pipeline, the push plate 31 pushes the sludge on the bottom wall of the pipeline along with the advance of the vehicle body 1, and meanwhile, under the suction action of the sludge suction pump 21, the sludge passes through the sludge suction port 24 and the sludge suction pipe 22 and then enters the sludge box 23, so that the dead-angle-free cleaning of the pipeline can be realized; when the push plate 31 collides with the bulge or the pipeline joint on the bottom wall of the pipeline, the pressure applied to the push plate 31 is increased, when the pressure applied to the push plate 31 is enough to compress the spring 34 to enable the pressure sensor 33 to collide with the bottom wall of the accommodating groove 323, the piston rod of the electric push rod 35 retracts, the bottom edge of the push plate 31 is far away from the bottom wall of the pipeline, the push plate 31 can avoid the bulge or the pipeline joint on the bottom wall of the pipeline, the vehicle body 1 can advance unhindered, and therefore the problem that the bulge or the pipeline joint on the bottom wall of the pipeline obstructs the vehicle body 1 to advance, and inconvenience is brought to desilting work is solved.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a pumping suction mud device of no dead angle clearance of pipeline, includes automobile body (1), install dredge pump (21) in automobile body (1), be connected with dredge pipe (22) on dredge pump (21), the output intercommunication of dredge pipe (22) has and is located silt case (23) in automobile body (1), its characterized in that: one end of the vehicle body (1) in the forward direction is hinged with a push plate (31) with a bottom edge matched with the contour of the bottom wall of the pipeline, a driving mechanism for driving the bottom edge of the push plate (31) to be tightly abutted against/away from the bottom wall of the pipeline is arranged on the vehicle body (1), a mud suction port (24) communicated with the mud suction pipe (22) is formed in the push plate (31), and the mud suction pipe (22) is made of soft materials.

2. The water pumping and mud sucking device for cleaning the dead angle of the pipeline according to claim 1, which is characterized in that: articulated on automobile body (1) have bracing piece (32), bracing piece (32) are kept away from the one end of automobile body (1) with push pedal (31) fixed connection, actuating mechanism is used for driving about bracing piece (32) are towards the direction upset that is close to/keeps away from the pipeline diapire.

3. The water pumping and mud sucking device for cleaning the dead angle of the pipeline as claimed in claim 2, wherein: the driving mechanism comprises an electric push rod (35) arranged on the vehicle body (1), a cylinder body of the electric push rod (35) is hinged on the vehicle body (1), and a piston rod is hinged on the supporting rod (32).

4. The water pumping and mud sucking device for cleaning the dead angle of the pipeline as claimed in claim 3, wherein: bracing piece (32) including sliding sleeve's mobile jib (321) and vice pole (322), confession has been seted up to mobile jib (321) tip vice pole (322) male holding tank (323), the piston rod of electric putter (35) articulate in on the mobile jib (321), be provided with in holding tank (323) and be used for the response push pedal (31) are contradicted the barrier and are driven the control mechanism of the piston rod withdrawal/extension of electric putter (35).

5. The water pumping and mud sucking device for cleaning the dead angle of the pipeline as claimed in claim 4, wherein: control mechanism include the rigid coupling in vice pole (322) are kept away from pressure sensor (33) of push pedal (31) one end, pressure sensor (33) with electric putter (35) control connection, be provided with the cover in holding tank (323) and locate pressure sensor (33) week side spring (34), spring (34) axial length under natural state is greater than pressure sensor (33) are followed spring (34) axial thickness.

6. The water pumping and mud sucking device for cleaning the dead angle of the pipeline according to claim 1, which is characterized in that: install water pump (41) on automobile body (1), be connected with water pipe (42) on water pump (41), the input intercommunication of water pipe (42) has water tank (43), the output of water pipe (42) is located automobile body (1) is gone up in the one end of its direction of advance, the output of water pipe (42) is provided with a plurality of water jet (45), and is a plurality of water jet (45) are respectively along the equidirectional slope towards the pipeline inner wall.

7. The water pumping and mud sucking device for cleaning the dead angle of the pipeline according to claim 1, which is characterized in that: the side wheels (51) are installed on two sides of the advancing track of the vehicle body (1), and an elastic mechanism used for driving the side wheels (51) to elastically abut against the inner side wall of the pipeline is arranged on the vehicle body (1).

8. The water pumping and mud sucking device for cleaning the dead angle of the pipeline according to claim 1, which is characterized in that: the bottom of one end, far away from the push plate (31), of the trolley body (1) is provided with a collecting hopper (6) for collecting large sundries.

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