Automatic cleaning device and cleaning method for stirrer of self-feeding mixer truck

Abstract

The invention belongs to the technical field of general cleaning, and particularly relates to an automatic cleaning device and method for a stirrer of a self-feeding mixer lorry, the cleaning device comprises a plurality of telescopic pipes which are arranged together in a sleeved mode, a spring is arranged between every two adjacent telescopic pipes, and the telescopic pipes are far away from each other under the action of the springs; a cleaning head is arranged on the front end head of the telescopic pipe located at the foremost end, a rotator is arranged at one end of the cleaning head, the nozzle is arranged on the rotator, the telescopic pipes of the telescopic pipe set are pulled under the action of the rear driving motor, the spring is compressed, then the telescopic pipe set is shrunk, and the overall length of the cleaning device is changed. The size of the cleaning device is shorter, the cleaning device can be installed on the stirrer, the interior of the stirrer is cleaned under the action of high-pressure water flow, the driving cylinder is controlled to drive the telescopic pipe set to change the inclination angle, the water flow spraying position of the nozzle is changed, and cleaning dead corners are reduced.

Description

Technical Field

[0001] The present application belongs to the general field of cleaning technology, and in particular relates to an automatic cleaning device and a cleaning method for an agitator of a self-loading mixer truck. Background Art

[0002] The self-loading concrete mixer truck is an engineering vehicle that integrates loading, concrete mixing and transportation. During the use of the self-loading concrete mixer truck, the loading bucket loads and lifts cement, gravel and other materials, so that the materials enter the mixer along the chute on the loading bucket, and water is added and mixed. After mixing, the materials can be unloaded directly on site. After unloading and no longer mixing, cleaning operations are required to prevent concrete from solidifying inside the mixer. If cleaning operations are performed immediately after unloading, the cleaning difficulty is the lowest and the cleaning effect is also good.

[0003] The current cleaning solutions are:

[0004] 1. Drive the self-loading mixer truck to a specific cleaning point for flushing and cleaning. During this process, the concrete remaining in the mixer will gradually solidify, increasing the time and difficulty of cleaning;

[0005] 2. After stopping the agitator, use the high-pressure water gun carried on the vehicle and the water in the water tank to clean the agitator. Since there are multiple spirally arranged agitating blades in the agitator, the high-pressure water gun has a poor cleaning effect on the back of the agitator, and manual cleaning is required inside the agitator.

[0006] The patent document with announcement number CN211161071U discloses a telescopic cleaning solution in which a gear and a rack cooperate to form a telescopic structure. In this solution, the motor of the driving gear is generally installed alone, so its sleeve needs to be made relatively long. If a shorter sleeve is used, multiple motors of the driving gear are required to be used in conjunction with the short-sized sleeve. However, since the motor itself occupies a part of the space and the motor can only be installed outside the sleeve, this solution cannot be used. At present, this solution with a longer sleeve is mainly used on independent cleaning equipment outside the mixer truck. The cleaning equipment cannot move with the mixer truck, and the mixer truck still needs to be moved to the cleaning equipment for cleaning operations.

[0007] In addition, the patent document with the announcement number CN207154339U discloses an independent cleaning device, which is a piece of equipment fixed separately at the cleaning station, and the cleaning device also adopts a telescopic mechanism mainly based on a gear transmission mechanism.

[0008] Based on the prior art, the inventor believes that the structure of the telescopic mechanism is the main factor limiting the installation of the cleaning device on the mixer truck. Summary of the invention

[0009] In order to solve the above-mentioned problems, the present application provides an automatic cleaning device and a cleaning method for an agitator of a self-loading mixer truck.

[0010] The first purpose of the present application is to provide an automatic cleaning device for the agitator of a self-loading mixer truck. The cleaning device is installed on the self-loading mixer truck. After the concrete mixing is completed and unloading, a telescopic tube group with variable length is used to enable the cleaning head of the cleaning device to enter the interior of the agitator, and the interior of the agitator is cleaned under the action of high-pressure water flow, thereby improving the convenience and immediacy of cleaning the interior of the agitator.

[0011] In order to achieve the first purpose of this application, the technical solution of this application is:

[0012] The invention discloses an automatic cleaning device for an agitator of a self-loading mixer truck. The self-loading mixer truck is provided with a water tank, a booster pump and a water supply pipe. The water supply pipe is provided with a valve. The water supply pipe is connected to a fixed seat. A telescopic pipe group is provided on the fixed seat. The telescopic pipe group includes a plurality of telescopic pipes sleeved together. The central axes of the telescopic pipes sleeved together coincide. A support ring is arranged in the intervals between the sleeved telescopic pipes. Springs are arranged between adjacent telescopic pipes so that the telescopic pipes move away from each other under the action of the springs. A cleaning head is arranged on the front end head of the telescopic pipe located at the front end. The central axis of the cleaning head is arranged obliquely with the central axis of the telescopic pipe. One end of the cleaning head is provided with There is a rotator, a nozzle is arranged on the rotator, a front drive motor is arranged at the other end of the cleaning head, the output shaft of the front drive motor is connected to the rotator, the rotator is driven to rotate by the front drive motor, a rear drive motor is arranged on the fixed seat, a rope winding roller is arranged on the output shaft of the rear drive motor, a pull rope is arranged on the rope winding roller, the pull rope passes through the central cavity of the telescopic tube and is connected to the front end head of the telescopic tube at the front end, the pull rope is pulled by the rear drive motor to make the telescopic tubes approach each other, the application uses a spring to support the telescopic tube, so that the telescopic tube group is expanded and lengthened, and the pull rope is used to pull the telescopic tube group to shrink and shorten, at this time the spring is compressed, so as to realize the movement of the cleaning head inside the agitator.

[0013] Furthermore, a connecting plate is provided on the fixing seat, and the telescopic tube group includes a first telescopic tube and a second telescopic tube, the first telescopic tube is provided on the connecting plate, and the inner diameter of the first telescopic tube is larger than the diameter of the through hole on the connecting plate, so that a boss is formed between the first telescopic tube and the connecting plate, and a convex ring is provided at the rear end head of the second telescopic tube, and a spring is arranged between the boss and the convex ring.

[0014] Furthermore, a mounting plate is provided inside the front end head of the frontmost telescopic tube, a fixing ring is provided at the center of the mounting plate, the front end of the pull rope is connected to the fixing ring, and a plurality of water inlet grooves penetrating the mounting plate are provided on the mounting plate. The use of the mounting plate makes it easy to install the fixing ring, and the mounting plate is also easy to install on the telescopic tube.

[0015] Furthermore, a motor bracket is provided on the fixed seat, the rear drive motor is fixed on the side plate of the motor bracket, the rope winding roller is arranged in the motor bracket, an expansion cavity and a matching hole connected to the expansion cavity are provided in the fixed seat, the central axis of the matching hole is arranged perpendicular to the central axis of the expansion cavity, a sealing cover is provided in the matching hole, a sealing seat is provided on the sealing cover, a sealing ring is provided in the cavity of the sealing seat, the pull rope is passed through the sealing seat, and the sealing ring in the sealing seat contacts with the pull rope; an anti-slip ring is provided on the sealing cover, the anti-slip ring is a closed ring body, the pull rope passes through the anti-slip ring, the motor bracket provides support for the rear drive motor and the rope winding roller, and the anti-slip ring ensures that the pull rope in the fixed seat moves in a small area, thereby reducing the influence of the water flow on the pull rope.

[0016] Furthermore, a coupling plate is provided on the rotator, and a plurality of water grooves penetrating the coupling plate are provided on the coupling plate. The output shaft of the front drive motor is connected to the coupling plate. A rotating sealing ring is provided on the outer periphery of the rotator, and the rotating sealing ring is arranged in the cleaning head. The clamping plate of the cleaning head clamps the rotating sealing ring.

[0017] Furthermore, a water inlet joint is provided on the water supply pipe, a water inlet end is provided on one end of the fixing seat away from the telescopic tube group, and the water inlet joint is connected to the water inlet end.

[0018] Furthermore, an articulated support frame is arranged on the outer side of the fixed seat, the fixed seat is hingedly arranged on the articulated support frame, a first articulated seat is arranged on the articulated support frame, a second articulated seat is arranged at the water inlet end, a driving cylinder is arranged on the first articulated seat, the end of the driving cylinder is articulatedly connected to the first articulated seat, the end of the piston rod of the driving cylinder is articulatedly connected to the second articulated seat, and the driving cylinder drives the fixed seat and the telescopic tube group on the fixed seat to move around the hinge point so as to reduce blind spots in cleaning.

[0019] Furthermore, a discharge chute plate is provided on the agitator of the self-loading agitator truck, and the side plates of the discharge chute plate extend upward to form the discharge chute side plates, and the hinged support frame is fixed on the discharge chute side plates.

[0020] The second purpose of the present application is to provide a method for cleaning an agitator of a self-loading mixer truck, in which water is supplied when the telescopic tube group is unfolded to clean the inside of the agitator, and the water is cut off when the telescopic tube group is retracted, so that the telescopic tube group can be retracted smoothly. The inclination angle of the telescopic tube group is changed by controlling the driving cylinder, thereby changing the position of the nozzle spraying water flow and reducing cleaning blind spots.

[0021] To achieve the second purpose of this application, the technical solution of this application is:

[0022] A method for cleaning an agitator of a self-loading mixer truck, using the above-mentioned automatic cleaning device for an agitator of a self-loading mixer truck, comprises the following steps:

[0023] S1, control the telescopic tube group to be in an initial state, the initial state of the telescopic tube group is that the rear drive motor drives the rope winding roller to rotate, thereby pulling the pull rope, so that the telescopic tubes are sleeved together and the spring is in a compressed state;

[0024] S2, start the booster pump, open the valve on the water supply pipe, and supply water to the water inlet end through the booster pump and the water supply pipe;

[0025] S3, control the rear drive motor to drive the rope winding roller to rotate and then loosen the pull rope. Under the action of the spring, the telescopic tubes move away from each other. At the same time, control the front drive motor to drive the rotator to rotate, and the nozzle sprays high-pressure water to clean the inside of the agitator;

[0026] S4, the rear drive motor controls the rope winding roller to rotate a fixed number of times and then reverses, and the booster pump, valve and front drive motor are turned off, the rear drive motor drives the rope winding roller to rotate, and the pull rope is pulled to restore the telescopic tube group to the initial state;

[0027] S5. Repeat steps S1-S4.

[0028] Furthermore, in step S5, the driving cylinder is controlled to drive the telescopic tube assembly to change its inclination angle, and then steps S1-S4 are repeated.

[0029] Compared with the prior art, the beneficial effects of this application are:

[0030] 1. The present application uses the side plate of the discharge chute as a bearing base, and installs the cleaning device on the side plate of the discharge chute, so that the cleaning device is arranged at the inlet of the agitator. The cleaning device that can change its length is used to allow the cleaning head of the cleaning device to enter the interior of the agitator. High-pressure water flows through the cleaning device and is sprayed from the nozzle at the head end of the cleaning device to achieve cleaning of the interior of the agitator, thereby improving the convenience and immediacy of cleaning the interior of the agitator.

[0031] 2. The present application adopts telescopic tubes which are sleeved together to form a telescopic tube group. A spring is installed in the telescopic tube group. Under the action of the spring, the telescopic tube in the telescopic tube group expands and becomes longer, so that the cleaning head at the head end of the telescopic tube group enters the interior of the agitator. Under the action of the rear drive motor, the telescopic tube of the telescopic tube group is pulled by a pull rope, and the spring is compressed to cause the telescopic tube group to contract, thereby realizing the change of the overall length of the cleaning device. After contraction, the size of the cleaning device is shorter, so that the cleaning device can be installed on the agitator.

[0032] 3. The present application solves the problem of blind spots in cleaning between agitators of different capacities, and avoids collision between the cleaning device and the stirring blades inside the agitator. To this end, the present application adopts a hinged structure that can adjust the angle of the telescopic tube group within a certain range. By changing the inclination angle of the fixed seat and the telescopic tube group on the hinged structure, the spray angle of the water flow on the cleaning head is changed, making the cleaning more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0034] Figure 1 A schematic diagram of a self-loading mixer truck equipped with a cleaning device;

[0035] Figure 2 A schematic diagram of the overall structure of this application in one direction;

[0036] Figure 3 It is a schematic diagram of the overall structure of this application in another direction;

[0037] Figure 4 This is a schematic diagram of the internal structure of the telescopic tube assembly and the cleaning head of the present application;

[0038] Figure 5 For this application, you need Figure 4 Schematic diagram with key areas marked;

[0039] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of the A area in the middle;

[0040] Figure 7 for Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0041] Figure 8 This is a schematic diagram of the overall structure of the fixing base and the motor bracket on the fixing base of the present application;

[0042] Fig. 9 for Figure 8 A schematic diagram of the front view structure of

[0043] Fig.10 for Figure 8 Schematic diagram of the internal structure;

[0044] Fig.11 It is a schematic diagram of the structure of the front-end telescopic tube and the mounting plate;

[0045] Fig.12 It is a schematic diagram of the overall structure of a more specific implementation scheme of the present application.

[0046] In the figure:

[0047] 1. Self-loading mixer truck, 2. Agitator, 3. Discharge chute side plate, 4. Support rod, 5. Cleaning device, 6. Fixed seat, 7. Fixed pipe, 8. First telescopic pipe, 9. Second telescopic pipe, 10. Third telescopic pipe, 11. Fourth telescopic pipe, 12. Cleaning head, 13. Front drive motor, 14. Rotator, 15. Nozzle, 16. Connecting plate, 17. First spring, 18. Second spring, 19. Third spring, 20. Fourth spring, 21. Coupling plate, 22. Motor bracket, 2 3. rear drive motor, 24. rope winding roller, 25. support ring, 26. rotating sealing ring, 27. pull rope, 28. sealing cover, 29. sealing seat, 30. anti-slip ring, 31. expansion chamber, 32. sealing ring, 33. fixing ring, 34. mounting plate, 35. convex ring, 36. water supply pipe, 37. water inlet joint, 38. water inlet end, 39. connecting plate, 40. articulated support frame, 41. first articulated seat, 42. second articulated seat, 43. drive cylinder, 44. shaft body, 45. locking shaft plate. DETAILED DESCRIPTION

[0048] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] In the present application, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present application, and do not specifically refer to any part or element in the present application and should not be understood as limitations on the present application.

[0051] Example 1

[0052] This embodiment is an automatic cleaning device for the agitator of a self-loading mixer truck, which is applied to the self-loading mixer truck 1, and uses the cleaning device 5 to immediately clean the agitator 2 after concrete mixing. Figure 1-Figure 12 The cleaning device 5 will be described.

[0053] like Figure 1As shown, from the overall structure of the self-loading mixer truck 1, the frame of the self-loading mixer truck 1 is equipped with an agitator 2, a water tank, a booster pump and a water supply pipe 36, and a valve is installed on the water supply pipe 36. Specifically, the water tank and the booster pump are installed at the rear end of the frame, and a loading bucket is installed at the front end of the frame. The water supply pipe 36 is arranged along the frame and extends to the inlet of the agitator 2. A discharge chute plate is also installed at the lower end of the inlet of the agitator 2. The discharge chute plate has a bottom plate and a side panel. The side panel of the discharge chute plate extends upward to form a discharge chute side panel 3. The cleaning device 5 of this embodiment is fixed on the discharge chute side panel 3. More specifically, a support rod 4 is welded on the bracket of the agitator 2, and one end of the support rod 4 is welded to the bottom plate or side plate of the discharge chute plate, which is used to strengthen the supporting strength of the discharge chute plate and ensure the stability of the cleaning device 5 when in use.

[0054] like Figure 2 As shown, the specific structure of the water inlet of the cleaning device 5 is: with the fixed seat 6 as the basis, the water supply pipe 36 is connected to the fixed seat 6, specifically, the water supply pipe 36 is a hose, and a steel wire is passed through the pipe. For example, the water supply pipe 36 is a PVC steel wire pipe, and the water supply pipe 36 is installed on the water inlet joint 37. For example, the water supply pipe 36 and the water inlet joint 37 are interference fit, or the water supply pipe 36 and the water inlet joint 37 are connected by a hose clamp. A water inlet end 38 is installed at one end of the fixed seat 6, and the water inlet end 38 is screwed on the fixed seat 6 by a threaded pipe on the water inlet end 38, and the water inlet joint 37 is connected to the water inlet end 38. The connection method adopts a threaded connection to form a stable water inlet structure.

[0055] Figure 2-Figure 11 What is shown is the overall structure and components of the cleaning device 5. This embodiment describes the cleaning device 5 in detail:

[0056] A telescopic tube group is installed on the fixed seat 6, and the telescopic tube group and the water inlet end 38 are arranged relative to each other. The telescopic tube group is a telescopic structure of the cleaning device 5. Specifically, the telescopic tube group includes a plurality of telescopic tubes sleeved together, and the central axes of the telescopic tubes sleeved together coincide. A gap is left between the telescopic tubes so that the fit between the telescopic tubes is a gap fit, thereby enabling the telescopic tubes to move. A support ring 25 is arranged in the interval between the sleeved telescopic tubes, and the support ring 25 separates the telescopic tubes to avoid contact between the telescopic tubes and ensure the stability of the movement of the telescopic tubes. A spring is installed between adjacent telescopic tubes. When the spring is in a compressed state and there is no constraint on the spring, the spring restores its elastic force, so that the telescopic tubes move away from each other under the action of the spring. More specifically, a connecting plate 16 is installed on the fixing seat 6, and the connecting plate 16 is fixed to the fixing seat 6 by bolts. The telescopic tube group includes a fixing tube 7 and a first telescopic tube 8. The fixing tube 7 is welded on the connecting plate 16, and the inner diameter of the fixing tube 7 is larger than the diameter of the through hole on the connecting plate 16, so that a boss is formed between the fixing tube 7 and the connecting plate 16. The rear end of the first telescopic tube 8 has a convex ring 35, and a spring is arranged between the boss and the convex ring 35, which is referred to as the first spring 17 herein. The boss and the convex ring 35 limit the first spring 17. In this embodiment, a five-stage telescopic structure is used as an example to illustrate the specific structure of the telescopic tube group. The first telescopic tube 8 is inserted into the fixed tube 7, the second telescopic tube 9 is inserted into the first telescopic tube 8, and the convex ring 35 of the first telescopic tube 8 extends to the inside of the first telescopic tube 8 to form a flange structure. The second spring 18 between the first telescopic tube 8 and the second telescopic tube 9 is arranged between the flange of the first telescopic tube 8 and the convex ring 35 of the second telescopic tube 9. Similarly, the third telescopic tube 10 is inserted into the second telescopic tube 9, and the convex ring 35 of the second telescopic tube 9 extends to the second telescopic tube 9. A flange structure is formed by extending inside the third telescopic tube 10. A third spring 19 is installed between the second telescopic tube 9 and the third telescopic tube 10. One end of the third spring 19 contacts the flange structure of the second telescopic tube 9, and the other end contacts the convex ring 35 of the third telescopic tube 10. The fourth telescopic tube 11 is passed through the third telescopic tube 10. The convex ring 35 of the third telescopic tube 10 extends inside thereof to form a flange structure. A fourth spring 20 is installed between the third telescopic tube 10 and the fourth telescopic tube 11. One end of the fourth spring 20 contacts the flange structure of the third telescopic tube 10, and the other end of the fourth spring 20 contacts the convex ring 35 of the fourth telescopic tube 11.

[0057] Since the capacities of the agitators 2 of the self-loading mixer trucks 1 vary, for example, the current self-loading mixer trucks 1 have agitators 2 with capacities of 1.8 cubic meters / tank, 2.6 cubic meters / tank, 3.5 cubic meters / tank, 4 cubic meters / tank, 5.5 cubic meters / tank, 6.5 cubic meters / tank, etc., and the depths of the internal cavities of the various agitators 2 are inconsistent. Therefore, the five-stage telescopic structure of the present embodiment is one of the specific implementation plans. The present embodiment can also be made into a four-stage telescopic structure or other numbers of telescopic structures, which can be adapted to agitators 2 of different capacities by combining different lengths of telescopic tubes.

[0058] As a matching structure of the telescopic tube group, the present embodiment utilizes the rear drive motor 23 to control the pull rope 27, and controls the overall length of the telescopic tube group by controlling the compression degree of the spring. The present embodiment is provided with a rear drive motor 23 at the position of the fixed seat 6. Specifically, a motor bracket 22 is installed on the fixed seat 6. The motor bracket 22 of the present embodiment is U-shaped, and the motor bracket 22 includes a bottom plate and a side plate, wherein the bottom plate of the motor bracket 22 is fixed to the fixed seat 6 by bolts, and the rear drive motor 23 is fixed to the side plate of the motor bracket 22 by bolts. A rope winding roller 24 is installed on the output shaft of the rear drive motor 23, and the rope winding roller 24 is arranged between the two side plates of the motor bracket 22. A bearing seat is installed on the side plate where the rear drive motor 23 is not installed. The output shaft of 23 is inserted into the bearing seat of the side plate of the motor bracket 22, and the fixed seat 6 has an expansion cavity 31 and a matching hole connected to the expansion cavity 31. The central axis of the matching hole is arranged perpendicular to the central axis of the expansion cavity 31, and the expansion cavity 31 is connected to the internal space of the telescopic tube group. In this embodiment, a pull rope 27 is wound around the rope winding roller 24, and the pull rope 27 passes through the central cavity of the telescopic tube and is connected to the front end head of the telescopic tube at the front end. The rear drive motor 23 drives the rope winding roller 24 to rotate and then pulls the pull rope 27 to make the telescopic tubes approach each other. As a specific structure for connecting the pull rope 27 with the front end head of the telescopic tube, in this embodiment, a mounting plate 34 is arranged at the front end head of the telescopic tube at the front end, and a fixing ring 33 is provided in the center of the mounting plate 34. The front end of the pull rope 27 is connected to the fixing ring 3 3 connection, a plurality of water inlet grooves penetrating the mounting plate 34 are provided on the mounting plate 34, so that water can smoothly pass through the mounting plate 34. In addition, in order to buffer the pressure of the high-pressure water flow passing through the fixing seat 6 and the telescopic tube group, the size of the expansion chamber 31 of this embodiment is enlarged. At the same time, in order to prevent the pull rope 27 from moving with the water flow in the expansion chamber 31 and also to prevent the water flow from flowing out of the matching hole, a sealing cover 28 is installed in the matching hole of this embodiment, and a sealing seat 29 is provided on the sealing cover 28. A plurality of sealing rings 32 are placed in the cavity of the sealing seat 29. The pull rope 27 is inserted into the sealing seat 29. The sealing ring 32 in the sealing seat 29 contacts with the pull rope 27 to prevent or reduce the water from flowing out along the pull rope 27. As an implementation scheme, the sealing seat 29 is made of rubber or other materials. By opening the sealing The sealing ring 32 is placed in the sealing seat 29 in the form of a sealing end of the seat 29, or the sealing ring 32 is integrated with the sealing seat 29 itself. The sealing ring 32 of this structure can be used in multiple groups. As another implementation scheme, the sealing seat 29 is detachably connected to the sealing cover 28 through a thread. The hole opened on the sealing cover 28 is slightly larger than the size of the pull rope 27. The sealing ring 32 is first installed in the sealing seat 29 and then installed on the sealing cover 28. In this embodiment, an anti-slip ring 30 is installed on the sealing cover 28. The anti-slip ring 30 is a closed ring body. The pull rope 27 passes through the anti-slip ring 30, and the pull rope 27 is limited by the anti-slip ring 30. When the sealing cover 28 and the sealing seat 29 are made of rubber or other materials, the anti-slip ring 30 can be made of rubber or other materials and connected to the sealing cover 28.When the sealing cover 28 is made of metal, such as stainless steel, the anti-slip ring 30 may be a U-shaped structure or an arc-shaped structure, and the two ends of the anti-slip ring 30 may be welded to the sealing cover 28.

[0059] As the water outlet structure of the cleaning device 5 of this embodiment, this embodiment adopts a cleaning head 12 structure that does not coincide with the central axis of the telescopic tube group. Specifically, a cleaning head 12 is installed on the front end head of the telescopic tube at the front end. There are two connection methods for the cleaning head 12. One is that the cleaning head 12 has a threaded hollow rod, and the threaded hollow rod is connected to a hexagonal threaded head. The front end head of the telescopic tube at the front end has an external thread, and the front end head of the telescopic tube at the front end is screwed and connected to the threaded head. The hexagonal threaded head simultaneously limits the mounting plate 34 at the front end head of the telescopic tube at the front end. The other is that the cleaning head 12 has its own threaded head, and the front end head of the telescopic tube at the front end has an external thread, and the front end head of the telescopic tube at the front end is directly connected to the threaded head on the cleaning head 12. The central axis of the cleaning head 12 and the central axis of the telescopic tube are an inclined matching scheme, that is, the two do not coincide and are not parallel. A rotator 14 is installed at one end of 12, and a nozzle 15 is installed on the rotator 14. For example, in the present embodiment, the number of the nozzles 15 is 4. A front drive motor 13 is installed at the other end of the cleaning head 12. The output shaft of the front drive motor 13 is connected to the rotator 14. The rotator 14 is driven by the front drive motor 13 to rotate. The front drive motor 13 drives the rotator 14 to rotate, and the rotation is more stable, which also has a supporting effect on the rotator 14. Specifically, the rotator 14 of the present embodiment has a coupling plate 21, and the coupling plate 21 has a plurality of water grooves passing through the coupling plate 21. The output shaft of the front drive motor 13 is connected to the coupling plate 21. A rotating sealing ring 26 is installed on the outer periphery of the rotator 14. The rotating sealing ring 26 is arranged in the cleaning head 12. The card plate of the cleaning head 12 clamps the rotating sealing ring 26. The rotating sealing ring 26 seals the head end of the cleaning head 12 and assists the rotation of the rotator 14.

[0060] In this embodiment, a connecting plate 39 may be welded to the water inlet joint 37 , and the connecting plate 39 is fixed to the fixing seat 6 by bolts to ensure the stability of the water inlet structure.

[0061] like Fig.12As shown, in order to solve the problem of cleaning dead angles between agitators 2 of different capacities and avoid collision between the cleaning device 5 and the agitator blades inside the agitator 2, a more specific implementation scheme in this embodiment is: control the telescopic tube group to move within a certain range, thereby changing the position of the nozzle 15 spraying water flow. Specifically, an articulated support frame 40 is installed on the outer side of the fixed seat 6, and the fixed seat 6 is hingedly matched with the articulated support frame 40. As a specific articulated structure, shafts 44 are installed on both sides of the fixed seat 6. The shaft 44 is fixed to the fixed seat 6 by welding or threaded connection, and a locking shaft plate 45 with a clearance fit with the shaft 44 is installed on the shaft 44, that is, the shaft 44 and the through hole in the center of the locking shaft plate 45 are clearance fit, and the locking shaft plate 45 is bolted. It is fixed on the articulated support frame 40, and the articulated support frame 40 is fixed on the side plate 3 of the discharge chute by bolts. The articulated support frame 40 has a first articulated seat 41, and the first articulated seat 41 is welded to the articulated support frame 40. A second articulated seat 42 is welded to the water inlet end 38, and a driving cylinder 43 is installed on the first articulated seat 41. The end of the driving cylinder 43 is hingedly connected to the first articulated seat 41, and the end of the piston rod of the driving cylinder 43 is hingedly connected to the second articulated seat 42. The driving cylinder 43 drives the fixed seat 6 and the telescopic tube group on the fixed seat 6 to move around the shaft 44, thereby making the telescopic tube group rotate within a certain range. The use of this structure requires the omission of the connecting plate 39, and the use of the driving cylinder 43 also plays the effect of the connecting plate 39 to a certain extent.

[0062] Example 2

[0063] Based on the specific structure of the cleaning device 5 of Example 1, this embodiment describes a method for cleaning an agitator of a self-loading mixer truck, comprising the following steps:

[0064] S1, control the telescopic tube group to be in an initial state, the initial state of the telescopic tube group is that the rear drive motor 23 drives the rope winding roller 24 to rotate and then pulls the pull rope 27, so that the telescopic tubes are sleeved together and the spring is in a compressed state;

[0065] S2, open the valves on the booster pump and the water supply pipe 36, and supply water to the water inlet end 38 through the booster pump and the water supply pipe 36;

[0066] S3, control the rear drive motor 23 to drive the rope roller 24 to rotate, thereby loosening the pull rope 27. Under the action of the spring, the telescopic tubes move away from each other. At the same time, control the front drive motor 13 to drive the rotator 14 to rotate, so that the nozzle 15 sprays high-pressure water and cleans the inside of the agitator 2;

[0067] S4, the rear drive motor 23 drives the rope winding roller 24 to rotate a fixed number of times and then reverses, and the booster pump, valve and front drive motor 13 are closed, so that the rear drive motor 23 drives the rope winding roller 24 to rotate, and then pulls the pull rope 27 to restore the telescopic tube group to the initial state;

[0068] S5. Repeat steps S1-S4.

[0069] This embodiment supplies water when the telescopic tube group is expanded and lengthened. At this time, the flow direction of the high-pressure water flow is the same as the expansion direction of the telescopic tube group, and the influence of the water flow on the expanded telescopic tube group is small. Therefore, this embodiment starts cleaning from the feed port of the agitator 2. When the telescopic tube group shrinks and becomes shorter, the shrinkage direction of the telescopic tube group is opposite to the flow direction of the high-pressure water flow, and the influence of the water flow on the shrinkage of the telescopic tube group is large. Therefore, the water supply is stopped when the telescopic tube group shrinks.

[0070] In step S5, the present embodiment first controls the driving cylinder 43 to drive the inclination angle of the telescopic tube group to change, thereby changing the position of the nozzle 15 spraying water flow to reduce the cleaning dead angle, and then repeats steps S1-S4.

[0071] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0072] Although the above describes the specific implementation methods of the present application in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present application. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present application, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present application.

Claims

1. An automatic cleaning device for a stirrer of a self-loading mixer truck, wherein the self-loading mixer truck (1) is provided with a water tank, a booster pump and a water supply pipe (36), and a valve is provided on the water supply pipe (36), characterized in that: The water supply pipe (36) is connected to the fixed seat (6), and a telescopic pipe group is arranged on the fixed seat (6). The telescopic pipe group includes a plurality of telescopic pipes which are sleeved together, and the central axes of the telescopic pipes which are sleeved together coincide with each other. A support ring (25) is arranged in the interval between the sleeved telescopic pipes. A spring is arranged between adjacent telescopic pipes so that the telescopic pipes move away from each other under the action of the spring. A cleaning head (12) is arranged at the front end of the telescopic pipe located at the front end, and the central axis of the cleaning head (12) is arranged obliquely with the central axis of the telescopic pipe. A rotator (14) is arranged at one end of the cleaning head (12), and a nozzle (15) is arranged on the rotator (14). A front drive motor (13) is arranged at the other end of the cleaning head (12), and an output shaft of the front drive motor (13) is connected to the rotator (14), and the rotator (14) is driven to rotate by the front drive motor (13); The fixing seat (6) is provided with a rear drive motor (23), the output shaft of the rear drive motor (23) is provided with a rope winding roller (24), the rope winding roller (24) is provided with a pull rope (27), the pull rope (27) passes through the central cavity of the telescopic tube and is connected to the front end of the frontmost telescopic tube, and the rear drive motor (23) pulls the pull rope (27) so that the telescopic tubes are moved closer to each other.

2. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 1, characterized in that: The fixing seat (6) is provided with a connecting plate (16), the telescopic tube group comprises a fixing tube (7) and a first telescopic tube (8), the fixing tube (7) is provided on the connecting plate (16), the inner diameter of the fixing tube (7) is larger than the diameter of the through hole on the connecting plate (16), so that a boss is formed between the fixing tube (7) and the connecting plate (16), the rear end of the first telescopic tube (8) is provided with a convex ring (35), and a spring is arranged between the boss and the convex ring (35).

3. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 1, characterized in that: A mounting plate (34) is arranged in the front end of the telescopic tube at the front end, a fixing ring (33) is arranged at the center of the mounting plate (34), the front end of the pull rope (27) is connected to the fixing ring (33), and a plurality of water inlet grooves penetrating the mounting plate (34) are arranged on the mounting plate (34).

4. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 1, characterized in that: The fixing seat (6) is provided with a motor bracket (22), the rear drive motor (23) is fixed on the side plate of the motor bracket (22), the rope winding roller (24) is arranged in the motor bracket (22), the fixing seat (6) is provided with an expansion cavity (31) and a matching hole communicating with the expansion cavity (31), the central axis of the matching hole is arranged perpendicular to the central axis of the expansion cavity (31), a sealing cover (28) is provided in the matching hole, a sealing seat (29) is provided on the sealing cover (28), a sealing ring (32) is provided in the cavity of the sealing seat (29), the pull rope (27) is inserted into the sealing seat (29), and the sealing ring (32) in the sealing seat (29) contacts the pull rope (27); The sealing cover (28) is provided with an anti-slip ring (30), the anti-slip ring (30) is a closed ring body, and the pull rope (27) passes through the anti-slip ring (30).

5. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 1, characterized in that: The rotator (14) is provided with a coupling plate (21), the coupling plate (21) is provided with a plurality of water channels penetrating the coupling plate (21), the output shaft of the front drive motor (13) is connected to the coupling plate (21), a rotating seal ring (26) is provided on the outer periphery of the rotator (14), the rotating seal ring (26) is arranged in the cleaning head (12), and a clamping plate of the cleaning head (12) clamps the rotating seal ring (26).

6. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 1, characterized in that: The water supply pipe (36) is provided with a water inlet joint (37), and the fixed seat (6) is provided with a water inlet end (38) at one end away from the telescopic tube group, and the water inlet joint (37) is connected to the water inlet end (38).

7. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 6, characterized in that: An articulated support frame (40) is arranged outside the fixed seat (6), the fixed seat (6) is hingedly arranged on the articulated support frame (40), a first articulated seat (41) is arranged on the articulated support frame (40), a second articulated seat (42) is arranged at the water inlet end (38), a driving cylinder (43) is arranged on the first articulated seat (41), the end of the driving cylinder (43) is articulatedly connected to the first articulated seat (41), the end of the piston rod of the driving cylinder (43) is articulatedly connected to the second articulated seat (42), and the driving cylinder (43) drives the fixed seat (6) and the telescopic tube group on the fixed seat (6) to move around the hinge point.

8. The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 7, characterized in that: A discharge chute plate is provided on the agitator (2) of the self-loading agitator truck (1), and a side plate of the discharge chute plate extends upward to form a discharge chute side plate (3), and a hinged support frame (40) is fixed on the discharge chute side plate (3).

9. A method for cleaning an agitator of a self-loading agitator truck, characterized in that: The automatic cleaning device for the stirrer of a self-loading mixer truck according to claim 8 comprises the following steps: S1, controlling the telescopic tube group to be in an initial state, wherein the initial state of the telescopic tube group is that the rear drive motor (23) drives the rope winding roller (24) to rotate, thereby pulling the pull rope (27), so that the telescopic tubes are sleeved together and the spring is in a compressed state; S2, starting the booster pump and opening the valve on the water supply pipe (36), supplying water to the water inlet end (38) through the booster pump and the water supply pipe (36); S3, controlling the rear drive motor (23) to drive the rope winding roller (24) to rotate and thereby loosening the pull rope (27), so that the telescopic tubes move away from each other under the action of the spring, and at the same time controlling the front drive motor (13) to drive the rotator (14) to rotate, and the nozzle (15) sprays high-pressure water to clean the inside of the agitator (2); S4, the rear drive motor (23) controls the rope winding roller (24) to rotate a fixed number of times and then reverses, and the booster pump, the valve and the front drive motor (13) are turned off, the rear drive motor (23) drives the rope winding roller (24) to rotate, and the pull rope (27) is pulled to restore the telescopic tube assembly to an initial state; S5. Repeat steps S1-S4.

10. A method for cleaning an agitator of a self-loading agitator truck according to claim 9, characterized in that: In step S5, the driving cylinder (43) is first controlled to drive the telescopic tube assembly so that the inclination angle of the telescopic tube assembly changes, and then steps S1 to S4 are repeated.

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