Suction unit assembly

Abstract

The present invention discloses a rake and suction unit assembly, which is installed on the arm mechanism of a dredging robot. The rake and suction unit assembly comprises a rake and suction spiral mechanism and a coaxial linkage mechanism of the arm assembly arranged on both sides of the rake and suction spiral mechanism. Two ends of one side of the arm mechanism are rotatably connected to the two side positions of the rake and suction spiral mechanism through the coaxial linkage mechanism of the arm assembly respectively. The middle position of the top surface of the rake and suction spiral mechanism is rotatably connected to the piston end of the rake and suction head adjusting cylinder through the adjusting cylinder piston pin shaft. In view of the defects of existing equipment, the present invention designs a coaxially linked rake and suction unit assembly that can be adjusted with multiple degrees of freedom. The rake and suction spiral, the rake and suction spiral mechanism and the coaxial linkage mechanism of the arm assembly can make the rake and suction spiral move independently of each other according to the actual conditions in pipelines and culverts. While ensuring the dredging effect, the work efficiency is greatly improved, and there is no risk of hydraulic oil leakage. The present invention has good use effect and broad market prospects.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, and more particularly to a rake suction unit assembly. Background Art

[0002] With the rapid development of urbanization in my country, the construction scale of urban drainage systems is also expanding. The existing urban drainage mainly relies on underground pipes and box culverts to dredge. This type of drainage method will inevitably lead to silt deposition in the long-term accumulation, and gradually lead to various situations such as pipe and box culvert blockage and sewage overflow. Especially in the flood season, the city drainage is blocked, and the road surface caused by this silt deposition is seriously flooded, and even traffic interruption in this section of the road is caused, which seriously affects the lives and production of citizens, pollutes the environment, and causes huge losses to the social economy. The speed of a city's development mainly depends on the urban drainage system. Therefore, it is necessary to regularly clean the city's drainage pipes and box culverts, which is of great significance for urban environmental protection, avoiding pollution, maintaining the city's appearance, and improving the quality of life of citizens. However, the environment in urban drainage pipes and box culverts is harsh, and they also contain some toxic gases. Manual cleaning is easy to cause harm to personal safety. Therefore, there is a dredging robot.

[0003] The movement of the suction screw on the existing dredging robot is restricted, and the suction screw, the suction screw mechanism and the coaxial linkage mechanism of the arm assembly cannot be independently actuated. Therefore, it is time-consuming and labor-intensive to clean the silt in pipes and box culverts, and higher labor costs are required. Summary of the invention

[0004] The object of the present invention is to provide a rake suction unit assembly to solve the problem in the above background technology that the rake suction screw and the rake suction screw mechanism and the coaxial linkage mechanism of the boom assembly in the existing dredging robot cannot be actuated independently of each other.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rake and suction unit assembly is installed on the big arm mechanism of the dredging robot, the rake and suction unit assembly includes a rake and suction spiral mechanism and a big arm assembly coaxial linkage mechanism arranged on both sides of the rake and suction spiral mechanism, the two ends of one side of the big arm mechanism are rotatably connected to the two side positions of the rake and suction spiral mechanism through the big arm assembly coaxial linkage mechanism respectively, the middle position of the top surface of the rake and suction spiral mechanism is rotatably connected with the piston end of the rake and suction head adjustment cylinder through the adjustment cylinder piston pin shaft, and the cylinder body end of the rake and suction head adjustment cylinder is rotatably connected to the big arm In the middle position of the mechanism, the suction head adjustment cylinder is used to drive the suction screw mechanism located on the boom mechanism to flip, and the suction screw mechanism is internally provided with a suction screw for rotation. One end of the coaxial linkage mechanism of the boom assembly penetrates the side wall of the suction screw mechanism and is fixedly connected to the opposite end face of the suction screw 605 through a suction screw connecting bolt assembly. Suction screw drive motors are fixedly installed at both ends of the boom mechanism near the two suction screw mechanisms, and the output of the suction screw drive motor is fixedly connected to the other end of the coaxial linkage mechanism of the boom assembly.

[0006] Preferably, the scraper and suction spiral mechanism includes a suction hood assembly, one end of a scraper and suction unit bracket arranged on the top surface of the suction hood assembly, and a mud pump assembly arranged on the outer wall of the suction hood assembly, the other end of the scraper and suction unit bracket is arranged on the mud pump assembly, and bearing sleeves are welded through both side walls of the suction hood assembly, and adjustment cylinder piston end sleeves are symmetrically welded on the scraper and suction unit bracket, and the adjustment cylinder piston pin shaft penetrates the adjustment cylinder piston end sleeve and is arranged on the scraper and suction unit bracket through the adjustment cylinder piston pin shaft fixing nut.

[0007] Preferably, the coaxial linkage mechanism of the boom assembly includes a power shaft and a friction ring installed on the power shaft, the friction ring is made of soft material, one end of the power shaft is provided with a plate seat connected to the end face of the rake suction screw, the other end of the power shaft is provided with a flat key hole connected to the output end of the rake suction screw driving motor by a key, the plate seat of the power shaft is provided with a groove on the side close to the power shaft, the friction ring is fixedly installed in the groove by a plurality of friction ring countersunk screws, the power shaft is interference fit with a rake suction mechanism operating bearing and a boom operating bearing by hydraulic press fitting, two ends of one side of the boom mechanism are respectively rotatably connected to the power shaft through the boom operating bearing, the rake suction mechanism operating bearing is inserted into the bearing sleeve, for making the rake suction screw mechanism rotate on the two coaxial linkage mechanisms.

[0008] Preferably, the power shaft is provided with an intermediate retaining spring and an end retaining spring for preventing the axial movement of the operating bearing of the rake suction mechanism and the operating bearing of the boom.

[0009] Preferably, a friction cover plate is fixedly mounted on the keyway end of the power shaft via a cover plate countersunk bolt.

[0010] Preferably, the thickness of the friction ring is greater than the depth of the groove inside the plate seat of the power shaft.

[0011] Preferably, the friction cover plate is made of soft material.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the rake and suction unit assembly, the big arm mechanism of the dredging robot is an important equipment connected to the front side wall of the vehicle body, which plays a role in supporting and adjusting the angle and height of its rake and suction spiral mechanism, so that the coaxial linkage mechanism of the big arm assembly drives the rake and suction spiral to work in different positions.

[0013] The whole structure adopts a symmetrical arrangement, and the coordinated setting of the oil cylinder drive is adjusted through the suction head to make its torque larger and the operation more reliable.

[0014] The suction screw is driven by a suction screw drive motor with a symmetrical arrangement, which is conducive to obtaining a balanced torque and making the operation more reliable.

[0015] The coaxial arrangement structure of the operating bearing of the suction mechanism and the operating bearing of the boom in series can obtain twice as many degrees of freedom as a single bearing structure, and can solve the problem of requiring the suction screw, the suction screw mechanism and the coaxial linkage mechanism of the boom assembly to move independently of each other.

[0016] Friction rings made of relatively soft materials are added as consumables at locations where relative motion occurs, thereby increasing the effective service life of major parts and reducing the rate of mechanical failure.

[0017] In view of the defects of existing equipment, the present invention designs a coaxially linked and multi-degree-of-freedom adjustable rake suction unit assembly, which can make the rake suction spiral, the rake suction spiral mechanism and the coaxial linkage mechanism of the boom assembly move independently of each other according to the actual conditions in the pipeline and the culvert. While ensuring the dredging effect, the work efficiency is greatly improved, and there is no risk of hydraulic oil leakage. The invention has good use effect and broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the dredging robot of the present invention;

[0019] Figure 2 for Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 3 It is a structural schematic diagram of the rake suction screw mechanism of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the coaxial linkage mechanism of the boom assembly of the present invention.

[0022] In the figure: 4-big arm mechanism, 6-raking and suction unit assembly, 601-raking and suction spiral mechanism, 6011-agitation and suction hood assembly, 6012-raking and suction unit bracket, 6013-mud pump assembly, 6014-bearing sleeve, 6015-adjusting cylinder piston end sleeve, 6016-adjusting cylinder piston pin shaft fixing nut, 602-big arm assembly coaxial linkage mechanism, 6021-power shaft, 6022-friction ring, 6023-friction ring countersunk screw, 6024-raking and suction mechanism operating bearing, 6025-big arm operating bearing, 603-adjusting cylinder piston pin shaft, 604-raking and suction head adjustment cylinder, 605-raking and suction spiral, 606-raking and suction spiral connecting bolt assembly, 607-raking and suction spiral driving motor, 608-middle retaining spring, 609-end retaining spring, 610-cover plate countersunk bolt, 611-friction cover plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-4 The present invention provides a technical solution: a rake suction unit assembly, Figure 1 and Figure 2In the embodiment, the dredging robot is installed on the arm mechanism 4, the rake suction unit assembly 6 includes a rake suction spiral mechanism 601 and a coaxial linkage mechanism 602 of the arm assembly arranged on both sides of the rake suction spiral mechanism 601, and the two ends of one side of the arm mechanism 4 are rotatably connected to the positions on both sides of the rake suction spiral mechanism 601 through the coaxial linkage mechanism 602 of the arm assembly respectively, and the middle position of the top surface of the rake suction spiral mechanism 601 is rotatably connected with the piston end of the rake suction head adjustment cylinder 604 through the adjustment cylinder piston pin 603, and the cylinder end of the rake suction head adjustment cylinder 604 is rotatably connected to the middle position of the arm mechanism 4, and the rake suction head adjustment cylinder 604 pushes the piston to extend and retract through the hydraulic action, and at the same time, the rake suction head adjustment cylinder 604 is used to drive the rake suction spiral mechanism 601 located on the arm mechanism 4 to flip, and the internal rotation of the rake suction spiral mechanism 601 is provided with a rake suction spiral 605 One end of the coaxial linkage mechanism 602 of the boom assembly passes through the side wall of the rake suction screw mechanism 601 and is fixedly connected to the opposite end face of the rake suction screw 605 through the rake suction screw connecting bolt assembly 606. The two ends of the boom mechanism 4 close to the two rake suction screw mechanisms 601 are fixedly installed with rake suction screw driving motors 607. The output of the rake suction screw driving motor 607 is fixedly connected to the other end of the coaxial linkage mechanism 602 of the boom assembly. The above movements are controlled by the hydraulic valve to supply oil. Each action can be independent of each other or combined with each other. Under the action of hydraulic pressure, the rake suction screw driving motor 607 drives the power shaft 6021 to rotate, thereby driving the rake suction screw 605 to rotate. During work, the height, excavation angle and excavation speed of the rake suction screw 605 can be adjusted according to the actual situation in the pipeline and culvert, thereby greatly improving the work efficiency while ensuring the dredging effect.

[0025] Specifically, Figure 3 In the figure, the scraper and suction spiral mechanism 601 includes a stirring and suction hood assembly 6011, one end of a scraper and suction unit bracket 6012 arranged on the top surface of the stirring and suction hood assembly 6011, and a mud pump assembly 6013 arranged on the outer wall of the stirring and suction hood assembly 6011, the other end of the scraper and suction unit bracket 6012 is arranged on the mud pump assembly 6013, and the two side walls of the stirring and suction hood assembly 6011 are penetrated and welded with bearing sleeves 6014. In order to ensure the coaxiality requirements after production, concentric shaft tooling is produced for the two bearing sleeves 6014, and the scraper and suction unit bracket 6012 is symmetrically welded with adjusting cylinder piston end sleeves 6015. The adjusting cylinder piston pin shaft 603 penetrates the adjusting cylinder piston end sleeve 6015 and is arranged on the scraper and suction unit bracket 6012 through the adjusting cylinder piston pin shaft fixing nut 6016.

[0026] Specifically, Figure 4In the figure, the coaxial linkage mechanism 602 of the boom assembly includes a power shaft 6021 and a friction ring 6022 installed on the power shaft 6021, the friction ring 6022 is made of soft material, one end of the power shaft 6021 is provided with a plate seat connected to the end face of the rake suction screw 605, the other end of the power shaft 6021 is provided with a flat key hole connected to the output end of the rake suction screw drive motor 607, a groove is provided on the plate seat of the power shaft 6021 close to the power shaft 6021, the friction ring 6022 is fixedly installed in the groove by a plurality of friction ring countersunk screws 6023, the power shaft 6021 is interference fit with a rake suction mechanism operating bearing 6024 and a boom operating bearing 6025 by hydraulic press fitting, the two ends of one side of the boom mechanism 4 are rotatably connected to the power shaft 6021 through the boom operating bearing 6025, the rake suction mechanism operating bearing 6024 is inserted into the bearing sleeve 6014, and is used to make the rake suction screw mechanism 601 rotate on the two coaxial linkage mechanisms 602.

[0027] Specifically, the power shaft 6021 is provided with an intermediate retaining spring 608 and an end retaining spring 609 to prevent axial movement of the scraper suction mechanism operating bearing 6024 and the boom operating bearing 6025. The scraper suction mechanism operating bearing 6024 and the boom operating bearing 6025 form a double-bearing series structure to facilitate installation and positioning and prevent the bearings from moving on the power shaft 6021 due to long-term operation.

[0028] Specifically, the keyway end of the power shaft 6021 is fixedly mounted with a friction cover plate 611 via a cover plate countersunk bolt 610 .

[0029] Specifically, the thickness of the friction ring 6022 is greater than the depth of the groove inside the plate seat of the power shaft 6021. After installation, the friction ring 6022 partially protrudes from the plate seat of the power shaft 6021, and its annular portion is the normal friction consumption position.

[0030] Specifically, the friction cover plate 611 is made of soft material. The friction ring 6022 and the end surface of the bearing sleeve 6014 as well as the end surface of the friction cover plate 611 and the power shaft 6021 form relative motion. Therefore, the friction ring 6022 and the friction cover plate 611 are both consumables, so they are made of relatively soft materials.

[0031] Working principle: The arm structure 4 of the dredging robot in the present invention is an important device connected to the front side wall of the vehicle body, which plays the role of supporting and adjusting the angle and height of its rake suction screw mechanism 601, so that the coaxial linkage mechanism 602 of the arm assembly drives the rake suction screw 605 to work at different positions. The whole set of structures adopts a symmetrical arrangement, and the matching setting driven by the rake suction head adjustment cylinder 604 makes its torque larger and the operation more reliable. The rake suction screw 605 is driven by the rake suction screw drive motor 607, and the symmetrical arrangement is conducive to obtaining a balanced torque and making the operation more reliable. The coaxial arrangement structure of the rake suction mechanism operating bearing 6024 and the arm operating bearing 6025 in series can obtain twice the degree of freedom than the single bearing structure, which can solve the problem of requiring the rake suction screw 605 and the rake suction screw mechanism 601 and the coaxial linkage mechanism 602 of the arm assembly to move independently from each other. A friction ring of relatively soft material is added as a consumable at the position where there is relative movement, which increases the effective service life of the main parts and reduces the mechanical failure rate.

[0032] In view of the defects of existing equipment, the present invention designs a coaxially linked and multi-degree-of-freedom adjustable rake suction unit assembly 6, which can make the rake suction spiral 605, the rake suction spiral mechanism 601 and the coaxial linkage mechanism 602 of the boom assembly move independently of each other according to the actual conditions in the pipeline and the culvert. While ensuring the dredging effect, the work efficiency is greatly improved, and there is no risk of hydraulic oil leakage. The invention has good use effect and broad market prospects.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rake suction unit assembly, mounted on the arm mechanism (4) of the dredging robot, characterized in that: The rake suction unit assembly (6) comprises a rake suction screw mechanism (601) and a boom assembly coaxial linkage mechanism (602) arranged on both sides of the rake suction screw mechanism (601); two ends of one side of the boom mechanism (4) are rotatably connected to the positions on both sides of the rake suction screw mechanism (601) through the boom assembly coaxial linkage mechanism (602); the middle position of the top surface of the rake suction screw mechanism (601) is rotatably connected to the piston end of the rake suction head adjustment cylinder (604) through the adjustment cylinder piston pin (603); the cylinder body end of the rake suction head adjustment cylinder (604) is rotatably connected to the middle position of the boom mechanism (4); the rake suction head adjustment cylinder (604) is used to A driving raking and suction screw mechanism (601) is located on the boom mechanism (4) and is turned over. A raking and suction screw (605) is rotatably arranged inside the raking and suction screw mechanism (601). One end of the boom assembly coaxial linkage mechanism (602) penetrates the side wall of the raking and suction screw mechanism (601) and is fixedly connected to the end surface opposite to the raking and suction screw (605) through a raking and suction screw connecting bolt assembly (606). The boom mechanism (4) is fixedly installed with raking and suction screw driving motors (607) at both ends close to the two raking and suction screw mechanisms (601). The output of the raking and suction screw driving motor (607) is fixedly connected to the other end of the boom assembly coaxial linkage mechanism (602). The rake suction screw mechanism (601) comprises a stirring and suction hood assembly (6011), one end of a rake suction unit bracket (6012) arranged on the top surface of the stirring and suction hood assembly (6011), and a mud pump assembly (6013) arranged on the outer wall of the stirring and suction hood assembly (6011); the other end of the rake suction unit bracket (6012) is arranged on the mud pump assembly (6013); bearing sleeves (6014) are penetrated and welded on both side walls of the stirring and suction hood assembly (6011); adjusting cylinder piston end shaft sleeves (6015) are symmetrically welded on the rake suction unit bracket (6012); the adjusting cylinder piston pin shaft (603) penetrates the adjusting cylinder piston end shaft sleeve (6015) and is arranged on the rake suction unit bracket (6012) through the adjusting cylinder piston pin shaft fixing nut (6016); The coaxial linkage mechanism (602) of the boom assembly comprises a power shaft (6021) and a friction ring (6022) mounted on the power shaft (6021), wherein the friction ring (6022) is made of soft material, one end of the power shaft (6021) is provided with a plate seat connected to the end face of the raking suction screw (605), the other end of the power shaft (6021) is provided with a flat key hole keyed to the output end of the raking suction screw drive motor (607), a groove is provided on the side of the plate seat of the power shaft (6021) close to the power shaft (6021), and the friction ring (6022) is provided with a groove. The raking and suction mechanism operating bearing (6024) and the boom operating bearing (6025) are fixedly installed in the groove by a plurality of friction ring countersunk screws (6023); the power shaft (6021) is interference-fitted with a raking and suction mechanism operating bearing (6024) and a boom operating bearing (6025) by means of hydraulic press-fitting; two ends of one side of the boom mechanism (4) are rotatably connected to the power shaft (6021) by means of the boom operating bearing (6025); the raking and suction mechanism operating bearing (6024) is inserted into a bearing sleeve (6014) to enable the raking and suction spiral mechanism (601) to rotate on the two boom assembly coaxial linkage mechanisms (602).

2. The suction unit assembly according to claim 1, characterized in that: The power shaft (6021) is provided with an intermediate retaining spring (608) and an end retaining spring (609) for preventing the axial movement of the operating bearing (6024) of the rake suction mechanism and the operating bearing (6025) of the large arm.

3. The suction unit assembly according to claim 2, characterized in that: The keyway end of the power shaft (6021) is fixedly mounted with a friction cover plate (611) via a cover plate countersunk bolt (610).

4. The suction unit assembly according to claim 3, characterized in that: The thickness of the friction ring (6022) is greater than the depth of the groove inside the plate seat of the power shaft (6021).

5. The suction unit assembly according to claim 4, characterized in that: The friction cover plate (611) is made of soft material.

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