A pipeline desilting vehicle with adjustable threaded wheels

Abstract

The invention discloses a pipeline dredging vehicle with an adjustable threaded wheel, comprising: a pair of symmetrically arranged threaded wheels, each threaded wheel comprising a first threaded wheel located at the front section, a second threaded wheel located at the middle section, and a third threaded wheel located at the rear section, the three threaded wheels being coaxially connected, and the thread line of the first threaded wheel being a tapered thread line; a support frame, the support frame comprising four pairs of support plates, two first connecting rods, and a telescopic rod, wherein two pairs of support plates are arranged between the first threaded wheel and the second threaded wheel, and the other two pairs of support plates are arranged between the second threaded wheel and the third threaded wheel; two first connecting rods are respectively connected to all support plates located at the same side, and the telescopic rod connects two first connecting rods; a mud suction hood connected to the support frame; and a threaded wheel driving motor. During normal walking and dredging, the rotation of the spiral wheel generates a forward thrust between the thread and the ground, and the sediment is stirred and crushed during the rotation of the thread, and is simultaneously transported to the mud suction port at the rear of the spiral wheel.

Description

Technical Field

[0001] The invention relates to pipeline desilting equipment, in particular to a pipeline desilting vehicle with an adjustable threaded wheel. Background Art

[0002] Pipeline desilting is a major problem faced by municipal pipe networks. Usually, high-pressure cleaning vehicles are used to flush, or manual traction, pushing and pulling are used to clean the silt inside the pipes to the outside. These methods are only suitable for desilting projects with a light degree of siltation and a short distance. For long-distance and severely blocked pipes, the construction difficulty and labor intensity will be significantly increased.

[0003] For example, the Chinese invention patent application document with publication number CN 109440915A discloses a sewer pipe desilting robot with a protection level of IP68. The sewer pipe desilting robot includes a crushing device, a main body structure, a top wheel device, an electric control integrated system, a drive device, a swing arm rotation device, an observation mirror and a control box. The front end of the robot is equipped with auxiliary tools such as a crushing device. The required tool system is configured according to the on-site working environment. The tool system uses electricity as a power source to improve operational reliability.

[0004] The Chinese invention patent application document with publication number CN 106351326A discloses a pipeline dredging equipment, including: track wheels, a push plate, a battery, an electric light, and a camera. The wheels of the pipeline dredging equipment are track wheels, which can be retracted to be smaller than the pipe diameter and unfolded to be slightly larger than the pipe diameter, and have a certain elasticity. The push plate in front of the dredging equipment is semicircular and made of rubber material. The dredging equipment is powered by a battery. An electric light and a camera are installed on the upper edge of the push plate, and the entire machine is waterproof.

[0005] In order to improve dredging efficiency and reduce operational risks, small robots are used to replace manual operations. However, the internal environment of the pipeline is complex, and the commonly used wheeled and crawler dredging robots often have weak obstacle avoidance capabilities and insufficient traction, and cannot fully play their role in pipelines with severe siltation. Summary of the invention

[0006] The present invention provides a pipeline silt removal vehicle with an adjustable double-threaded wheel. During normal travel and silting, the spiral wheel rotates to generate a forward thrust between the thread and the ground, and the silt is stirred and broken during the rotation of the thread and transported to the mud suction port at the tail of the spiral wheel.

[0007] A pipeline dredging vehicle with adjustable double threaded wheels, comprising:

[0008] A pair of symmetrically arranged thread wheels, each thread wheel comprises a first thread wheel located at the front section, a second thread wheel located at the middle section and a third thread wheel located at the rear section, the three thread wheels are coaxially connected, and the thread line of the first thread wheel is a tapered thread line;

[0009] A support frame, the support frame includes four pairs of support plates, at least two first connecting rods and a telescopic rod, wherein two pairs of support plates are arranged between the first section thread wheel and the second section thread wheel, and the other two pairs of support plates are arranged between the second thread wheel and the third thread wheel, and the two support plates in each pair of support plates are symmetrically arranged, the tops are hingedly connected to each other, and the bottoms respectively pass through the rotating shafts of the corresponding thread wheels, the first connecting rods respectively connect all the support plates located on the same side, and the telescopic rod is arranged between two cross bars in the same horizontal plane and the two ends are respectively connected to the corresponding connecting rods;

[0010] The mud suction hood is located behind the third thread along the travel direction and is connected to a pair of support plates of the support frame close to the mud suction hood through a second connecting rod. The mud suction port of the mud suction hood faces between the two third threads and the mud outlet is connected to the mud suction pipe.

[0011] And a thread wheel driving motor is installed on the support frame and drives a pair of thread wheels to rotate towards each other during operation.

[0012] The threaded wheel of the present invention has strong traction when used as a traveling mechanism, and is suitable for various complex pipeline environments. In particular, the threaded wheel of the present invention serves as a traveling mechanism, a sludge crushing mechanism and a sludge conveying mechanism at the same time. The conical threaded wheel at the front end can crush the sediment well, and the middle section is mainly used for advancing, while stirring the sludge to make it loose, and also plays a certain conveying role. The threaded section at the rear section also has the same function, but its main purpose is to convey the sludge to the sludge suction hood port. The latter two sections of the threaded wheel rotate towards each other during the traveling process, conveying the sludge backwards so that it can enter the sludge suction port better.

[0013] The extension and retraction of the telescopic rod can adjust the distance between the two threaded wheels, so as to better clean the silt in the pipe. At the same time, it can adapt to the dredging of pipes with different diameters, or expand the cleaning area by adjusting the distance between the threaded wheels.

[0014] Preferably, the first thread wheel has a taper angle range of 5° to 10°, a spiral pitch of 1 to 10 cm, and a maximum thread diameter less than or equal to the diameter of the second thread wheel. The second and third spiral wheels are both common spiral wheels, and the ratio of the thread diameter to the shaft diameter is 1.1 to 2 diameters.

[0015] Further preferably, in order to better play the conveying effect of the third section of the thread, the diameter of the third thread wheel is smaller than that of the second thread wheel and keeps a certain distance from the wall (the distance is determined by the diameter of the third thread wheel) to convey the silt to the mud suction hood port.

[0016] Preferably, each pair of support plates are connected at the top by a connecting plate, and the connecting plate is hingedly connected to the corresponding support plate; the four connecting plates are connected by a third connecting rod that runs through the centers of all the connecting plates, and the third connecting rod is fixedly connected to the corresponding connecting plate.

[0017] Further preferably, the four pairs of support plates are the first pair of support plates, the second pair of support plates, the third pair of support plates and the fourth pair of support plates in order from the third threaded wheel to the first threaded wheel; a pair of pins parallel to each other and located on both sides of the third connecting rod are provided between the connecting plates of the first pair of support plates and the connecting plates of the second pair of support plates, and between the connecting plates of the third pair of support plates and the connecting plates of the fourth pair of support plates, the two ends of the pins are fixedly connected to the corresponding connecting plates, and the corresponding support plates are hingedly connected to the connecting plates through the pins.

[0018] Preferably, the outer contours of the four pairs of support plates are consistent and are all irregular shapes, with one long side being a straight side, the other opposite long side being an arc side, the top end having a sharp corner that gradually tapers toward the arc side, and the bottom end having a connecting portion that also gradually tapers toward the arc side. When installed, the straight side faces inward and the arc side faces outward, forming an A-shaped symmetry.

[0019] A through hole is set on the angle portion at the top of each support plate, and through holes are set at corresponding positions at both ends of each connecting piece. The two ends of the pin shaft respectively penetrate the corresponding support plate and the through holes on the connecting piece, and the pin shaft is fixedly connected to the support piece and hingedly connected to the support plate. The connection method between the first pair of support plates and the second pair of support plates is the same as the connection method between the third pair of support plates and the fourth pair of support plates. The two ends of the third connecting rod respectively penetrate the center of the corresponding connecting piece and are fixedly connected, and the pin shaft is symmetrically located on both sides of the third connecting rod and is parallel to the third connecting rod.

[0020] Through holes are provided on the connection parts at the bottom of the support plates for passing the corresponding threaded wheel rotating shafts, and all the support plates can rotate around the corresponding threaded wheel rotating shafts.

[0021] Preferably, the mud suction hood gradually shrinks from one end of the mud suction port to one end of the mud discharge port, and the bottom of the mud suction hood is an arc that fits the pipe wall; the mud suction port is connected to the sludge pipe, and the sludge pipe is connected to the sludge pump.

[0022] The shape of the suction hood is a square or arched tapered hood, and its height and width or radius are made according to the size of the pipe used, but its width is not less than the maximum width of the spiral travel mechanism in the combined state. Usually, an arch with a diameter of 100mm to 800mm and a height of 1 / 8 to 1 / 4 of the diameter is preferred. This shape can better fit the inner wall of a circular pipe. If it is a square pipe, the inlet is preferably a suction hood with a rectangular cross-section. The outlet at the rear end of the suction hood is connected to the sludge pipe flange.

[0023] Preferably, a pair of support plates near one side of the mud suction hood are provided with arc-shaped slots extending horizontally; a connecting rod fastener is also provided to slide with the two arc-shaped slots, the connecting rod fastener includes a cross bar and slip rings provided at both ends of the cross bar, the slip rings are connected with the corresponding arc-shaped slots in a sliding manner; one end of the second connecting rod is inserted into the cross bar of the connecting fastener and can rotate around the cross bar. The slip ring of the connecting rod fastener is matched with the slot of the width adjustment mechanism, and the slip ring can move in the slot but will not separate from the slot. The arc-shaped slot is used for the slip ring of the connecting rod fastener to slide along the slot, and the position of the arc-shaped slot is centered on the through hole at the top of the support plate, and moves with the center of the slot as a radius.

[0024] When the telescopic rod is extended, the distance between the threaded wheels increases, the height of the support frame decreases, and the slip ring of the connecting rod fastener slides along the slot to adapt to the changed height. At this time, the second connecting rod pushes the suction hood backward to move adaptively, and vice versa, the suction hood is pulled forward to move adaptively. After the height is fixed, the suction hood is supported by its own bottom in the sludge pipe and is dragged forward by the support frame.

[0025] Preferably, the bottom of the mud suction hood is a curved surface that fits the inner wall of the pipeline; and the other end of the second connecting rod is fixedly connected to the top surface of the mud suction hood.

[0026] Further preferably, two fixed blocks are arranged on the top of the mud suction hood, and the two ends of a rotating shaft are rotatably connected to the corresponding fixed blocks, the axis of the rotating shaft is arranged perpendicular to the central axis of the threaded wheel, one end of the rotating shaft is connected to the rotating shaft driving motor through a coupling, and the second connecting rod is sleeved on the rotating shaft and fixedly connected. The acute angle formed by the second connecting rod and the horizontal plane is adjustable in the range of 15° to 45°.

[0027] A fixed block and a rotating shaft drive motor are installed on the top of the mud suction hood. The rotating shaft passes through the fixed block and is connected to the shaft of the drive motor. The top of the fixed block is designed to be openable for disassembly of the rotating shaft and the mud suction hood adjustment mechanism. The rotating shaft drive motor is used to fine-tune the angle of the mud suction port of the mud suction hood so that the mud suction port is parallel to the vertical plane, or forms a certain angle with the vertical plane to change the height of the mud suction port.

[0028] Preferably, the first thread wheel and the second thread wheel of each thread wheel and the second thread wheel and the third thread wheel are connected by a coupling; the thread wheel drive motors are set to 4, which are respectively installed on the support plate near the corresponding coupling positions, and the thread wheel drive motors are driven by the corresponding coupling gears.

[0029] The lower end of the first pair of support plates is connected to the central axis of the third section of the thread, the lower ends of the second pair of support plates and the third section of the support plates are respectively connected to the central axis of both ends of the second section of the thread, and the lower end of the fourth pair of support plates is connected to the central axis of the first section of the threaded wheel. Gaps are reserved between the first pair of support plates and the second pair of support plates, and between the third pair of support plates and the fourth pair of support plates for installing the threaded wheel drive motor, and the couplings are located between adjacent support plates.

[0030] Preferably, the telescopic rod is an electric push rod. Further preferably, the electric push rod is installed at the midpoint of the two first connecting rods.

[0031] The opening and contraction of the support plates are adjusted by the extension and contraction of the electric push rod, thereby adjusting the spacing between the threaded wheels. The maximum adjustable range of the angle between the two symmetrical support plates in each pair of support plates is 90°. The straight edge closure between the two support plates is 0°

[0032] To facilitate the adjustment of the angles between the support plates, preferably, all the support plates are irregular in shape, with one long side being a straight side and the other long side opposite thereto being an arc side. Each pair of support plates is installed with the arc side facing outwards and the straight side facing inwards, so as to facilitate complete closure after symmetry.

[0033] Preferably, cameras are installed on the first pair of support plates and the fourth pair of support plates respectively, so that the staff can observe various conditions in the pipeline when the silt removal vehicle is moving.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] (1) The width-adjustable spiral travel mechanism uses an electric telescopic rod to adjust the distance between the two parallel spiral wheels to adapt to the dredging of pipes with different diameters and expand the cleaning area.

[0036] (2) A conical spiral wheel is provided at the front end to destroy the sediment.

[0037] (3) The spiral structure of the dredging mechanism has strong traction and is suitable for various complex pipeline environments.

[0038] (4) The mud suction port adopts an arched cross-section or a rectangular cross-section, and the bottom fits well with the pipe wall, so the mud suction is more thorough.

[0039] (5) The structure of the lifting mechanism ensures that the adjustment of the suction port height does not conflict with the opening and closing of the spiral wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 and Figure 2 It is a stereogram of the present invention at different angles.

[0041] Figure 3 It is the front view of the present invention.

[0042] Figure 4 It is a left view of the present invention.

[0043] Figure 5 It is a top view of the present invention.

[0044] Figure 6 It is a structural diagram of the mud suction hood of the present invention.

[0045] Figure 7 Schematic diagram of the support plate structure of the first pair of support plates.

[0046] Figure 8 This is a schematic diagram of the support plate structure of the second to fourth pairs of support plates

[0047] Fig. 9 It is a structural schematic diagram of the supporting plate connecting piece.

[0048] Fig.10 It is a schematic diagram of the structure of the first spiral wheel.

[0049] Fig.11 It is a schematic diagram of the structure of the second spiral wheel.

[0050] The reference numerals shown in the figures are as follows:

[0051] 1- Mud suction hood 2- Mud suction hood adjustment mechanism 3- Support frame

[0052] 4-Spiral mechanism

[0053] 11-rotating shaft 12-fixed block 13-rotating shaft drive motor

[0054] 21- Second connecting rod 22- Connecting rod fastener

[0055] 31- third connecting rod 32- first connecting rod 33- telescopic rod

[0056] 34-support plate connecting piece 35-first pair of support plates 36-second pair of support plates

[0057] 37- third pair of support plates 38- fourth pair of support plates 39- pin shaft

[0058] 341-pin fixing hole 342-connecting rod passing hole

[0059] 351-first circular hole 352-second circular hole 353-third circular hole

[0060] 354-arc slot

[0061] 361- fourth circular hole 362- fifth circular hole 363- sixth circular hole

[0062] 41-first thread wheel 42-second thread wheel 43-third thread wheel

[0063] 44-Threaded wheel drive motor DETAILED DESCRIPTION

[0064] like Figures 1 to 11 As shown, a small-sized pipeline desilting vehicle comprises a mud suction hood 1, a mud suction hood adjustment mechanism 2, a support frame 3 and a spiral travel mechanism 4.

[0065] The bottom of the mud suction hood 1 is an arc shape that fits the pipe wall. One end of the mud suction port gradually shrinks toward the mud discharge port. The mud discharge port is connected to the sludge pipe through a flange. The sludge pipe is connected to the ground mud suction pump. When the mud suction hood fits the pipe wall, the surface of the mud suction port is perpendicular to the pipe wall.

[0066] The mud suction hood adjustment mechanism 2 includes two second connecting rods 21 parallel to each other and a connecting rod fastener 22 connected to the support frame. The connecting rod fastener 22 includes a cross bar and slip rings located at both ends of the cross bar. One end of the second connecting rod is fixedly connected to the top surface of the mud suction hood, and the other end is inserted into the cross bar of the connecting rod fastener and can rotate around the cross bar.

[0067] One end of the second connecting rod can be directly fixed on the top surface of the mud suction hood. To facilitate the adjustment of the mud suction port angle, two fixing blocks 12 are set on the top of the mud suction hood. The two ends of the rotating shaft 11 are respectively installed on the corresponding fixing blocks. The axis of the mounting rod is parallel to the plane where the mud suction port is located. One end of the second connecting rod connected to the mud suction hood passes through the rotating shaft and is fixedly connected to the rotating shaft.

[0068] The spiral travel mechanism 4 includes a pair of parallel threaded wheels, each of which includes a first threaded wheel 41 at the front end, a second threaded wheel 42 at the middle section, and a third threaded wheel 43 at the rear section. The three threaded wheels are coaxially arranged. In this embodiment, the first threaded wheel and the second threaded wheel and the second threaded wheel and the third threaded wheel are connected by couplings, respectively. Gears are arranged on the couplings. The thread line of the first spiral wheel is a conical thread line, the taper angle range is 5° to 10°, the spiral pitch is 1 to 10 cm, and the maximum thread diameter is less than or equal to the diameter of the second spiral wheel; the second and third spiral wheels are both ordinary spiral wheels, and the ratio of the thread diameter to the thread wheel shaft diameter is 1.1 to 2. The diameter of the third threaded wheel can also be set to be smaller than the second threaded wheel, and a certain gap is maintained between the wall surface. The mud suction port of the mud suction hood is directly opposite to the two third threaded wheels.

[0069] The support frame 3 includes four pairs of support plates, two first connecting rods 32, a third connecting rod 31 and a telescopic rod 33. Each pair of support plates includes two support plates symmetrically arranged in an A shape, two pairs of which are arranged between the third thread wheel and the second thread wheel, and the other two pairs are arranged between the second thread wheel and the first thread wheel. From the third thread wheel to the first thread wheel, there are the first pair of support plates 35, the second pair of support plates 36, the third pair of support plates 37 and the fourth pair of support plates 38. The outer contours of the four pairs of support plates are consistent, all of which are irregular shapes, one of which is a straight side, the other opposite long side is an arc side, the top end has a sharp corner that gradually shrinks toward the arc side, and the bottom end has a connecting portion that also gradually shrinks toward the arc side. When installed, the straight side faces inward and the arc side faces outward, forming an A-shaped symmetry.

[0070] The support plate structure constituting the first pair of support plates 35 is shown in the figure, a first circular hole 351 is set at the top angle, a second circular hole 352 is set on the plate surface of the middle and lower part, and a third circular hole 353 is set on the connecting part of the bottom. An arc-shaped slot 354 with the first circular hole as the center and the distance between the center of the arc-shaped slot and the first circular hole as the radius is set below the first circular hole; the structures of the second, third and fourth pairs of support plates are the same, and the support plate structure of the second pair of support plates 36 is taken as an example for explanation, and its structure is as follows Figure 8 As shown, a fourth circular hole 361 is arranged at the top corner, a fifth circular hole 362 is arranged on the middle and lower plate surface, and a sixth circular hole 363 is arranged on the bottom connecting portion.

[0071] Each pair of support plates is connected at the top corners by a support plate connecting piece 34. The support plate connecting piece is a square piece, and pin fixing holes 341 are respectively arranged at the two top corners and a connecting rod passing hole 342 is arranged at the lower center.

[0072] The connecting piece of the support plate is hingedly connected to the corresponding support plate, and the connecting pieces of the four pairs of support plates are connected by a third connecting rod 31. One end of the third connecting rod passes through the connecting rod passing holes of the connecting piece of the second pair of support plates and the connecting piece of the first pair of support plates in sequence and is fixedly connected, and the other end passes through the connecting rod passing holes of the connecting piece of the third pair of support plates and the connecting piece of the fourth pair of support plates in sequence and is fixedly connected. A pair of pins 9 are arranged between the connecting piece of the first pair of support plates and the connecting piece of the second pair of support plates. The pins are respectively located on both sides of the third connecting rod and are parallel to the third connecting rod. Both ends of the pins are fixedly connected to the corresponding connecting piece, and the circular holes at the sharp corners of the corresponding support plates pass through the pins and can rotate around the pins. The connecting piece of the third pair of support plates is connected in the same way as the connecting piece of the fourth pair of support plates. The connecting piece of the support plate is fixedly connected to the pin, and the support plate is rotatably connected to the pin, that is, the support plate can rotate around the pin.

[0073] The third circular hole 353 at the bottom of the first pair of support plates passes through the central axis of one end where the two third-section threaded wheels are connected to the coupling; the sixth circular hole 363 at the bottom of the second pair of support plates and the third pair of support plates passes through the central axis at both ends of the second-section threaded wheel; the circular hole at the bottom of the fourth pair of threaded wheels passes through the central axis of one end where the first-section threaded wheel is connected to the coupling. The coupling is located in front of the adjacent support plates. Two threaded wheel drive motors 44 are respectively arranged between the first pair of support plates and the second pair of support plates and between the third pair of support plates and the fourth pair of support plates. The threaded wheel drive motors are arranged close to the corresponding couplings and fixed on the corresponding support plates. The threaded wheel drive motors and the corresponding couplings are driven by gears to drive the corresponding threaded wheels to rotate.

[0074] One end of one of the first connecting rods 32 passes through the support plates on one side of the second pair and the first pair of support plates in sequence and is fixedly connected at the penetration point, and the other end passes through the support plates on the corresponding sides of the third pair and the fourth pair of support plates in sequence and is fixedly connected at the penetration point; one end of the other first connecting rod passes through the support plates on one side of the second pair and the first pair of support plates in sequence and is fixedly connected at the penetration point, and the other end passes through the support plates on the corresponding sides of the third pair and the fourth pair of support plates in sequence and is fixedly connected at the penetration point. The two first connecting rods are located in the same horizontal plane, and the two second connecting rods are connected by a telescopic rod 33, and the two ends of the telescopic rod are respectively connected to the midpoint of the corresponding first connecting rod.

[0075] The telescopic rod can be a hydraulic rod or an electric push rod. For example, in this embodiment, a one-way electric push rod CLA-100mm (https: / / www.51pla.com / Html / SellInfo / 253 / 25305927.htm) can be selected, and the bottom end of the push rod is fixed to achieve extension to both sides. The electric push rod has a built-in limit switch to achieve automatic locking after extension.

[0076] The arc-shaped slots on the first pair of support plates are used to install the connecting rod fastener 22. The slip rings at both ends of the connecting fastener slide with the corresponding arc-shaped slots and will not slip off. The slip ring can be limited by the nut on the back of the support plate to slide out of the arc-shaped slot. One end of the second connecting rod connecting fastener is inserted into the cross bar of the fastener and can rotate around the cross bar. The electric push rod telescopes to adjust the spacing between the threaded wheels, and the height of the corresponding support frame changes. The connecting rod fastener slides along the arc-shaped slot to adapt to the changed width. The second connecting rod is hinged to the connecting rod fastener to adapt to the changed height. The mud suction hood is pushed by the second connecting rod to adjust the position of the mud suction hood.

[0077] Here’s how it works:

[0078] The robot works and monitors by the ground personnel. A camera is installed on each of the front and rear support plates to observe the sludge deposition in the pipeline. For the first dredging, the symmetrical support plates are in a merged state, and the thread wheel spacing reaches the minimum distance, so that the sludge at the bottom center is fully removed. For the second dredging, the thread wheel spacing is increased by 2 screw diameters, and the thread spacing is continued to increase for each subsequent dredging. During the dredging operation, a pair of thread wheels rotate in opposite directions.

[0079] Select an appropriate suction hood according to the size of the pipe to be desilted. For example, for a sewage pipe with a diameter of 600mm, an arched suction hood with a radius of 250mm is used. The mud outlet of the suction hood is connected to the sludge pipe with a flange. Adjust the length of the electric push rod of the silt removal vehicle so that the opening angle of the symmetrical ring pieces is 0° (that is, the inner straight edges are closed). Put the silt removal vehicle into the pipeline and adjust the shaft drive motor on the suction hood so that the bottom of the suction hood is close to the pipe wall. Turn on the screw wheel drive motor to drive the screw wheel to rotate, move forward and stir the silt. At the same time, turn on the suction pump on the ground. The sediment at the suction port is transported backward by the screw wheel and sucked away by the suction hood. If there is a large piece of silt in front, the tip of the first screw wheel will first contact the silt. Under the action of thrust and spiral rotation, the sediment is easily broken and then smoothly sucked out under the stirring and transportation of the second and third screw wheels. After the first round of dredging, the electric push rod is operated to increase its length, the opening angle between the support plates is increased, and the contact positions of the second and third spiral wheels with the pipe wall are changed, so that more dredging of the inner wall of the pipe can be carried out.

[0080] The above is only a specific implementation case of the patent of the present invention, but the technical features of the patent of the present invention are not limited thereto. Any changes or modifications made by any technician in the relevant field within the field of the present invention are covered by the patent scope of the present invention.

Claims

1. A pipeline desilting vehicle with an adjustable threaded wheel, characterized in that: include: A pair of symmetrically arranged thread wheels, each thread wheel comprises a first thread wheel located at the front section, a second thread wheel located at the middle section and a third thread wheel located at the rear section, the three thread wheels are coaxially connected, the thread line of the first thread wheel is a tapered thread line; the taper angle of the first thread wheel is in the range of 5° to 10°, the spiral pitch is 1 to 10 cm, and the maximum thread diameter is less than or equal to the diameter of the second thread wheel; A support frame, the support frame includes four pairs of support plates, at least two first connecting rods and a telescopic rod, wherein two pairs of support plates are arranged between the first section thread wheel and the second section thread wheel, and the other two pairs of support plates are arranged between the second thread wheel and the third thread wheel. The two support plates in each pair of support plates are symmetrically arranged, the tops are hingedly connected to each other, and the bottoms pass through the rotating shafts of the corresponding thread wheels respectively. The first connecting rods respectively connect all the support plates located on the same side, and the telescopic rods are arranged between two cross bars in the same horizontal plane and the two ends are respectively connected to the corresponding connecting rods; each pair of support plates is connected at the top by a connecting piece, and the connecting piece and the corresponding support plate are hinged. The four connecting plates are connected by a third connecting rod that runs through the centers of all the connecting plates, and the third connecting rod is fixedly connected to the corresponding connecting plate; the four pairs of support plates are the first pair of support plates, the second pair of support plates, the third pair of support plates and the fourth pair of support plates in order from the third threaded wheel to the first threaded wheel; a pair of pins that are parallel to each other and are respectively located on both sides of the third connecting rod are respectively arranged between the connecting plates of the first pair of support plates and the connecting plates of the second pair of support plates and between the connecting plates of the third pair of support plates and the connecting plates of the fourth pair of support plates, and both ends of the pins are fixedly connected to the corresponding connecting plates, and the corresponding support plates are hingedly connected to the connecting plates through the pins; The mud suction hood is located behind the third thread along the travel direction and is connected to a pair of support plates of the support frame close to the mud suction hood through a second connecting rod. The mud suction port of the mud suction hood faces between the two third threads and the mud outlet is connected to the mud suction pipe. And a thread wheel driving motor is installed on the support frame and drives a pair of thread wheels to rotate towards each other during operation.

2. The pipeline desilting vehicle according to claim 1, characterized in that: The mud suction hood gradually shrinks from one end of the mud suction port to one end of the mud discharge port, and the bottom of the mud suction hood is an arc shape that fits the pipe wall; the mud suction port is connected to the sludge pipe, and the sludge pipe is connected to the sludge pump.

3. The pipeline desilting vehicle according to claim 1, characterized in that: A pair of support plates near one side of the mud suction hood are provided with arc-shaped slots extending horizontally; a connecting rod fastener slidably matched with the two arc-shaped slots is also provided, the connecting rod fastener includes a cross bar and slip rings provided at both ends of the cross bar, the slip rings are slidably connected with the corresponding arc-shaped slots; one end of the second connecting rod is inserted into the cross bar of the connecting rod fastener and can rotate around the cross bar.

4. The pipeline desilting vehicle according to claim 3, characterized in that: The bottom of the mud suction hood is a curved surface that fits the inner wall of the pipeline; the other end of the second connecting rod is fixedly connected to the top surface of the mud suction hood.

5. The pipeline desilting vehicle according to claim 3, characterized in that: Two fixed blocks are arranged on the top of the mud suction hood, and the two ends of a rotating shaft are rotatably connected to the corresponding fixed blocks. The axis of the rotating shaft is arranged perpendicular to the central axis of the threaded wheel. One end of the rotating shaft is connected to the rotating shaft driving motor through a coupling, and the second connecting rod is sleeved on the rotating shaft and fixedly connected.

6. The pipeline desilting vehicle according to claim 1, characterized in that: The first thread wheel and the second thread wheel of each thread wheel are connected through a coupling, as well as the second thread wheel and the third thread wheel are connected through a coupling; the thread wheel drive motors are set to 4, which are respectively installed on the support plate near the corresponding coupling positions, and the thread wheel drive motors are driven by the corresponding coupling gears.

7. The pipeline desilting vehicle according to claim 1, characterized in that: The telescopic rod is an electric push rod.

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