Novel double-pump converging device for micro-excavation

Abstract

The utility model provides a novel double-pump confluence device for micro excavation, which comprises a double-pump confluence device body, a protective cover is arranged outside the double-pump confluence device body, the double-pump confluence device body can be protected by the protective cover when being used in a severe environment, and the double-pump confluence device body can be prevented from being damaged in high-temperature weather. The fan can be driven by the controller to quickly cool the double-pump confluence device body in the protective cover, an electric push rod can be started to stretch out and draw back in rainy days, a clamping block is inserted into a clamping groove to be clamped, a servo motor is started to drive a rotating shaft to drive a reel to rotate synchronously, and the temperature of the double-pump confluence device body is lowered. And a third belt pulley and a third belt drive reels on the two sides to rotate synchronously, waterproof breathable layers on the reels are unwound, when the waterproof breathable layers move downwards till magnetic blocks attract magnetic plates, servo motors are turned off, at the moment, heat dissipation openings can be shielded, and it is avoided that rainwater enters a protective cover to damage a double-pump confluence device body assembly.

Description

Technical Field

[0001] The utility model relates to a novel double-pump confluence device for a micro excavator, belonging to the technical field of hydraulic pressure. Background Art

[0002] The new dual-pump merging device of the micro-excavator is designed to optimize the working performance of the hydraulic system of the micro excavator. Through reasonable design, the flow output by the two hydraulic pumps is effectively merged and accurately distributed to various actuators (such as the cylinders and travel motors of the working devices such as the boom, dipper arm, bucket, etc.) to meet the micro-excavator's requirements for movement speed, force, etc. under different working conditions, and improve working efficiency and control performance. With the needs of various projects, the flow demand of the front-end accessories installed on the excavator is increasing. The dual-pump merging valve can combine the flow of the two hydraulic pumps of the excavator to increase the flow.

[0003] The prior art authorization publication number is CN217401321U, and is titled "A Dual-Pump Converging Device Based on a Single Valve Core." It includes a left valve body and a right valve body. Its characteristics include: an oil replenishment check valve, an oil inlet check valve, and a right overload relief valve are mounted on the right valve body; a left overload relief valve, an E-valve check valve, and an E-valve solenoid valve are mounted on the left valve body; and a main valve core assembly is mounted between the left and right valve bodies, with valve covers 1 and 2 mounted on either end. Compared to the prior art, the present invention has only one main valve core, resulting in a simple control valve structure, compact size, low cost, and straightforward control logic.

[0004] Existing mini excavators often operate in relatively harsh outdoor environments. Environmental factors such as dust, mud, water, high temperature, and humidity at the construction site have a significant impact on the precision components in the dual-pump merging device, thereby affecting the stable use of the dual-pump merging device.

[0005] Therefore, a new dual-pump merging device with micro-excavation is proposed. Utility Model Content

[0006] In view of this, the present invention provides a novel dual-pump merging device for micro-excavation to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the utility model is achieved as follows: a novel dual-pump confluence device for micro-excavation, comprising a dual-pump confluence device body, a protective cover is provided outside the dual-pump confluence device body, heat dissipation ports are symmetrically opened at both ends of the protective cover, a fan is installed in the heat dissipation port, a filter is fixedly connected to the outer ring of the heat dissipation port on the protective cover, a force-bearing block is fixedly connected to the inner wall of the protective cover near the heat dissipation port, a reel is rotatably connected between the force-bearing block and the inner wall of the protective cover, and the protective cover is sleeved on the surface of the reel, a waterproof and breathable layer is wound around the surface of the reel, a magnetic block is fixedly connected to the bottom end of the waterproof and breathable layer, and the inner side of the heat dissipation port is fixed directly below the magnetic block. A magnetic plate is connected, and the magnetic block attracts each other with the magnetic plate through rotation. A through-hole corresponding to the scroll is bored on the side end of the protective cover, and a rotating shaft is rotatably connected in the through-hole. A card slot is provided on the rotating shaft, and an electric push rod is embedded in the end of the scroll close to the rotating shaft. The movable end of the electric push rod is fixedly connected to a card block, and the card block is engaged with the card slot through the extension and contraction of the electric push rod. A support plate is fixedly connected to the support plate, and a servo motor is fixedly connected to the output end of the servo motor and connected to one of the rotating shafts. The two rotating shafts are located on the outer surface of the protective cover and are both provided with a third belt pulley, and the two third belt pulleys are connected by a third belt.

[0008] Further preferably, the top of the protective cover is symmetrically fixedly connected to the shell, the inner wall of the shell is rotatably connected to a screw, and one end of the screw extends outside the shell.

[0009] Further preferably, one of the lead screws and the corresponding rotating shaft surface are both sleeved with a second belt pulley, and the two second belt pulleys are connected by a second belt.

[0010] Further preferably, the lead screw is provided with a first belt pulley on one end surface of the housing, and the two first belt pulleys are connected by a first belt, and a waterproof cover covering the outside of the servo motor is fixedly connected to the support plate by bolts.

[0011] Further preferably, a slider is sleeved on the surface of the lead screw, and a cleaning brush is detachably connected to one end of the slider away from the lead screw, and the cleaning brush is in contact with the filter screen.

[0012] Further preferably, the contact end of the slider and the cleaning brush are both provided with corresponding screw holes, and the inner threads of the screw holes are connected to a threaded pin with a handle.

[0013] Further preferably, an opening is provided at the bottom of the filter, and the length of the opening is consistent with the heat dissipation port.

[0014] Further preferably, a controller for controlling the servo motor, the electric push rod and the fan is fixedly connected to the protective cover.

[0015] The embodiment of the present invention has the following advantages due to the adoption of the above technical solution:

[0016] 1. The utility model provides a protective cover. When the dual-pump merging device body is used in a harsh environment, it can be protected by the protective cover. In hot weather, the controller can drive the fan to quickly cool the dual-pump merging device body inside the protective cover. If it rains, the heat dissipation port can be blocked to prevent rainwater from entering the protective cover and damaging the dual-pump merging device body assembly. The utility model effectively achieves corresponding cooling and waterproofing measures for the dual-pump merging device body inside the protective cover according to changes in outdoor weather.

[0017] Second, the utility model provides a cleaning brush, and after the card block is engaged with the card slot, the reel is driven to retract and release the waterproof and breathable layer, and the screw can be driven to rotate by the second belt pulley and the second belt, and the two screws are driven to rotate synchronously by the first belt pulley and the first belt, so that the cleaning brush on the screw moves horizontally to clean the surface of the filter. When it is necessary to clean the dust on the filter specifically, after the waterproof and breathable layer is lowered to block the heat dissipation port, the electric push rod is turned on to pull the card block out of the card slot, and the rotating shaft is disconnected from the reel. At this time, the servo motor only starts the screw to drive the cleaning brush to move back and forth to clean the filter. When the cleaned dust falls into the filter, it will be blocked by the waterproof and breathable layer and enter the protective cover, so that the filter is automatically cleaned regularly to avoid clogging of the filter and affecting the heat dissipation problem.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is a schematic diagram of the protective structure of the dual-pump merging device of the present utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the protective cover of the present utility model;

[0022] Figure 3 For the utility model Figure 2 A in the middle is an enlarged schematic diagram;

[0023] Figure 4 This is a schematic diagram of the cleaning brush drive mechanism of the present utility model;

[0024] Figure 5 This is a schematic diagram of the installation structure of the cleaning brush of the present invention.

[0025] Figure numerals: 1. Double-pump confluence device body; 2. Protective cover; 3. Heat dissipation port; 4. Fan; 5. Filter; 6. Scroll; 7. Waterproof and breathable layer; 8. Magnetic block; 9. Servo motor; 10. Housing; 11. Screw; 12. Slider; 13. Cleaning brush; 14. Support plate; 15. First belt; 16. Perforation; 17. Rotating shaft; 18. Force block; 19. Electric push rod; 20. Block; 21. Slot; 22. First belt pulley; 23. Second belt pulley; 24. Second belt; 25. Waterproof cover; 26. Screw hole; 27. Threaded pin; 28. Handle; 29. ​​Magnetic plate; 30. Third belt pulley; 31. Third belt. DETAILED DESCRIPTION

[0026] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] Example 1

[0029] like Figure 1-3As shown, the embodiment of the utility model provides a novel dual-pump confluence device of micro-excavation, including a dual-pump confluence device body 1, characterized in that: a protective cover 2 is provided on the outside of the dual-pump confluence device body 1, and heat dissipation ports 3 are symmetrically opened at both ends of the protective cover 2. A fan 4 is installed in the heat dissipation port 3, and a filter 5 is fixedly connected to the outer ring of the heat dissipation port 3 on the protective cover 2. A force-bearing block 18 is fixedly connected to the inner wall of the protective cover 2 near the heat dissipation port 3. A reel 6 is rotatably connected between the force-bearing block 18 and the inner wall of the protective cover 2, and the protective cover 2 is sleeved on the surface of the reel 6. A waterproof and breathable layer 7 is wound around the surface of the reel 6. A magnetic block 8 is fixedly connected to the bottom end of the waterproof and breathable layer 7. A magnetic plate 29 is fixedly connected to the inner side of the heat dissipation port 3 directly below the magnetic block 8, and the magnetic block 8 attracts each other with the magnetic plate 29 through rotation. The side end of the protective cover 2 is provided with a through hole 16 corresponding to the reel 6, and a rotating shaft 17 is rotatably connected in the through hole 16, and a card slot 21 is provided on the rotating shaft 17. An electric push rod 19 is embedded in the end of the reel 6 close to the rotating shaft 17, and the movable end of the electric push rod 19 is fixedly connected to a card block 20, and the card block 20 is engaged with the card slot 21 through the extension and contraction of the electric push rod 19. The outer end of the protective cover 2 is fixedly connected to a support plate 14, and a servo motor 9 is fixedly connected to the support plate 14, and the output end of the servo motor 9 is connected to one of the rotating shafts 17. The two rotating shafts 17 are located on the outer surface of the protective cover 2 and are both provided with a third belt pulley 30, and the two third belt pulleys 30 are connected by a third belt 31. The protective cover 2 is fixedly connected to a controller for controlling the servo motor 9, the electric push rod 19 and the fan 4.

[0030] By setting the protective cover 2, when the dual-pump converging device body 1 is used in a harsh environment, it can be protected by the protective cover 2, and in hot weather, the controller can drive the fan 4 to quickly cool down the dual-pump converging device body 1 in the protective cover 2. If it rains, the electric push rod 19 can be turned on to extend and retract, and the card block 20 can be inserted into the card slot 21 to engage. At this time, the servo motor 9 is turned on to drive the rotating shaft 17 to drive the reel 6 to rotate synchronously, and the reels 6 on both sides are driven to rotate synchronously through the third belt pulley 30 and the third belt 31 to unwind the waterproof and breathable layer 7 on the reel 6. When the waterproof and breathable layer 7 moves downward to the magnetic block 8 and the magnetic plate 29 are attracted, the servo motor 9 will be turned off. At this time, the heat dissipation port 3 can be blocked to prevent rainwater from entering the protective cover 2 and damaging the dual-pump converging device body 1 assembly, effectively achieving corresponding cooling and waterproofing measures for the dual-pump converging device body 1 in the protective cover 2 according to outdoor weather changes.

[0031] Example 2

[0032] like Figure 1 and Figure 4-5As shown, in one embodiment, the top of the protective cover 2 is symmetrically fixedly connected to the shell 10, and the inner wall of the shell 10 is rotatably connected to the lead screw 11, and one end of the lead screw 11 extends outside the shell 10, one of the lead screws 11 and the corresponding rotating shaft 17 are both provided with a second belt pulley 23, and the two second belt pulleys 23 are connected by a second belt 24, the lead screw 11 is located on one end surface of the shell 10 and is provided with a first belt pulley 22, and the two first belt pulleys 22 are connected by a first belt 15, and the support plate 14 is fixedly connected to a waterproof cover 25 covering the outside of the servo motor 9 by bolts, and a slider 12 is provided on the surface of the lead screw 11, and the cleaning brush 13 is detachably connected to the end of the slider 12 away from the lead screw 11, and the cleaning brush 13 is in contact with the filter 5, and the contact ends of the slider 12 and the cleaning brush 13 are provided with corresponding screw holes 26, and the screw hole 26 is threadedly connected to a threaded pin 27 with a handle 28, and the bottom end of the filter 5 is provided with an opening, and the length of the opening is consistent with the heat dissipation port 3.

[0033] By setting a cleaning brush 13, after the block 20 is engaged with the card slot 21, the reel 6 is driven to retract and release the waterproof and breathable layer 7. The second belt pulley 23 and the second belt 24 can be used to drive the screw 11 to rotate, and the first belt pulley 22 and the first belt 15 can be used to drive the two screws 11 to rotate synchronously, so that the cleaning brush 13 on the screw 11 moves horizontally to clean the surface of the filter 5. When it is necessary to clean the dust on the filter 5, the waterproof and breathable layer 7 is lowered to block the heat dissipation port 3. At this time, the electric push rod 19 is turned on to move the block 20 is pulled out from the card slot 21, and the rotating shaft 17 is disconnected from the reel 6. At this time, the servo motor 9 only starts the screw 11 to drive the cleaning brush 13 to move back and forth to clean the filter 5, and the cleaned dust will be blocked by the waterproof and breathable layer 7 when it falls into the filter 5 and enter the protective cover 2, and at the same time be discharged from the opening. When the cleaning brush 13 is not needed at all, the handle 28 can be held and the threaded pin 27 can be twisted to remove the cleaning brush 13 from the slider 12. Through the above, the filter 5 can be cleaned regularly and automatically to avoid clogging of the filter 5 and affecting the heat dissipation problem.

[0034] When the utility model is working: first, when the dual-pump confluence device body 1 is used in a harsh environment, it can be protected by the protective cover 2, and in hot weather, the controller can drive the fan 4 to quickly cool the dual-pump confluence device body 1 in the protective cover 2. If it rains, the electric push rod 19 can be turned on to extend and retract, and the card block 20 can be inserted into the card slot 21 to engage. At this time, the servo motor 9 is turned on to drive the rotating shaft 17 to drive the reel 6 to rotate synchronously, and the reels 6 on both sides are driven to rotate synchronously through the third belt pulley 30 and the third belt 31 to unwind the waterproof and breathable layer 7 on the reel 6. When the waterproof and breathable layer 7 moves downward to the point where the magnetic block 8 and the magnetic plate 29 are attracted, the servo motor 9 will be turned off. At this time, the heat dissipation port 3 can be blocked to prevent rainwater from entering the protective cover 2 and damaging the dual-pump confluence device body 1 assembly. Secondly, after the card block 20 is engaged with the card slot 21, the reel 6 is driven to unwind the waterproof When the air-permeable layer 7 is retracted or released, the screw 11 can be driven to rotate by the second belt pulley 23 and the second belt 24, and the two screws 11 can be driven to rotate synchronously by the first belt pulley 22 and the first belt 15, so that the cleaning brush 13 on the screw 11 moves horizontally to clean the surface of the filter screen 5. When it is necessary to clean the dust on the filter screen 5 specifically, after the waterproof and air-permeable layer 7 is lowered to block the heat dissipation port 3, the electric push rod 19 is turned on to pull the block 20 out of the card slot 21, and the rotating shaft 17 is disconnected from the reel 6. At this time, the servo motor 9 only starts the screw 11 to drive the cleaning brush 13 to move back and forth to clean the filter screen 5, and the cleaned dust falling into the filter screen 5 will be blocked by the waterproof and air-permeable layer 7 and enter the protective cover 2, and at the same time be discharged from the opening. When the cleaning brush 13 is not needed at all, the handle 28 can be held and the threaded pin 27 can be twisted to remove the cleaning brush 13 from the slider 12.

[0035] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A novel dual-pump merging device for micro-excavation, comprising a dual-pump merging device body (1), characterized in that: The dual-pump confluence device body (1) is provided with a protective cover (2) on the outside, and heat dissipation ports (3) are symmetrically opened at both ends of the protective cover (2). A fan (4) is installed in the heat dissipation port (3). A filter (5) is fixedly connected to the outer ring of the heat dissipation port (3) on the protective cover (2). A force-bearing block (18) is fixedly connected to the inner wall of the protective cover (2) near the heat dissipation port (3). A reel (6) is rotatably connected between the force-bearing block (18) and the inner wall of the protective cover (2). The protective cover (2) is sleeved on the surface of the reel (6). A waterproof and breathable layer (7) is wound around the surface of the reel (6). A magnetic block (8) is fixedly connected to the bottom end of the waterproof and breathable layer (7). A magnetic plate (29) is fixedly connected to the inner side of the heat dissipation port (3) directly below the magnetic block (8). The magnetic block (8) attracts the magnetic plate (29) by rotation. A through hole (16) corresponding to the reel (6) is bored at the side end of the cover (2), a rotating shaft (17) is rotatably connected in the through hole (16), a card slot (21) is provided on the rotating shaft (17), an electric push rod (19) is embedded in one end of the reel (6) close to the rotating shaft (17), a card block (20) is fixedly connected to the movable end of the electric push rod (19), and the card block (20) is engaged with the card slot (21) through the telescopic movement of the electric push rod (19), the outer end of the protective cover (2) is fixedly connected to a support plate (14), a servo motor (9) is fixedly connected to the support plate (14), and the output end of the servo motor (9) is connected to one of the rotating shafts (17), and the two rotating shafts (17) are located on the outer surface of the protective cover (2) and are both sleeved with a third belt pulley (30), and the two third belt pulleys (30) are connected by a third belt (31).

2. A novel dual-pump merging device for micro-excavation according to claim 1, characterized in that: The top of the protective cover (2) is symmetrically fixedly connected to the housing (10), and the inner wall of the housing (10) is rotatably connected to a lead screw (11), and one end of the lead screw (11) extends outside the housing (10).

3. The novel dual-pump merging device for micro-excavation according to claim 2 is characterized in that: A second belt pulley (23) is sleeved on the surface of one of the lead screws (11) and the corresponding rotating shaft (17), and the two second belt pulleys (23) are connected by a second belt (24).

4. The novel dual-pump merging device for micro-excavation according to claim 2 is characterized in that: The screw (11) is located on one end surface of the housing (10) and is sleeved with a first belt pulley (22), and the two first belt pulleys (22) are connected by a first belt (15). The support plate (14) is fixedly connected with a waterproof cover (25) covering the outside of the servo motor (9) by bolts.

5. The novel dual-pump merging device for micro-excavation according to claim 2 is characterized in that: The surface of the lead screw (11) is sleeved with a slider (12), and one end of the slider (12) away from the lead screw (11) is detachably connected to a cleaning brush (13), and the cleaning brush (13) is in contact with the filter screen (5).

6. The novel dual-pump merging device for micro-excavation according to claim 5 is characterized in that: The contact ends of the slider (12) and the cleaning brush (13) are both provided with corresponding screw holes (26), and the internal threads of the screw holes (26) are connected to a threaded pin (27) with a handle (28).

7. The novel dual-pump merging device for micro-excavation according to claim 1 is characterized in that: The bottom end of the filter screen (5) is provided with an opening, and the length of the opening is consistent with the heat dissipation port (3).

8. The novel dual-pump merging device for micro-excavation according to claim 1 is characterized in that: A controller for controlling the servo motor (9), the electric push rod (19) and the fan (4) is fixedly connected to the protective cover (2).

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