Machining and grinding device for connecting rod of medium-sized excavator

Abstract

The invention discloses a middle-sized excavator connecting rod machining and grinding device, and relates to the technical field of excavator accessory machining, the middle-sized excavator connecting rod machining and grinding device comprises a base, a workbench is fixedly mounted on the top surface of the base, two moving rails are fixedly mounted on the top surface of the workbench, and a moving plate is slidably mounted between the two moving rails; a mechanical arm is fixedly installed on the top face of the moving plate, a grinding head is arranged at the tail end of the mechanical arm, and a connecting rod body is arranged on the top face of the workbench. According to the working principle, when the connecting rod body is polished, the connecting hole and the oil hole can be effectively blocked and protected, metal dust is prevented from entering the hole and being hardened to form a microscopic insert, and therefore the service life of the connecting rod body is prolonged, and the reliability of the connecting rod body is improved. And meanwhile, metal dust generated by polishing is collected and treated through the dust removal assembly, the working environment is kept clean, and the polishing work efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of excavator accessory machining, in particular to a medium excavator connecting rod machining and polishing device. BACKGROUND

[0002] In the engineering machinery such as an excavator, a connecting rod refers to a component in a hydraulic system or a part of a mechanical arm, and the connecting rod can assist the extension of a digging arm, the swing of a bucket rod and the like, and for the excavator, the connecting rod refers to a hinged component on a working device, the component allows the relative movement among an arm, a bucket rod and a bucket, and the component is driven by a hydraulic cylinder, so that the excavator can complete various digging actions.

[0003] As the hinged component, symmetrical connecting holes are machined at two ends of the medium excavator connecting rod, and an oil injection hole is further machined on the connecting hole wall, lubricating oil in the oil injection hole is used for continuously lubricating the cooperation between the connecting hole and a pin shaft, the overall shape has symmetry, and after the connecting rod is completed, the connecting rod is not directly put into use, and the inner wall of the connecting hole of the medium excavator connecting rod needs to be finely ground, and the polishing of the inner wall of the connecting hole of the medium excavator connecting rod is an important work, which is related to the cooperation tightness between the connecting rod and other components (such as a pin shaft, a bushing and the like) and the reliability of overall operation.

[0004] In the machining process of the excavator connecting rod, polishing is one of the key procedures. The traditional polishing equipment usually adopts simple fixing devices and manual operation, and has many deficiencies. First, the existing polishing equipment usually adopts simple clamps or pressing plates when fixing the connecting rod, cannot effectively adapt to connecting rods of different specifications and shapes, leads to insecure fixing, is prone to displacement in the polishing process, and affects the polishing precision. Secondly, the metal dust generated in the polishing process of the traditional equipment is difficult to effectively control, especially the dust with a particle size of less than 20 mu m, which is easy to penetrate into the bolt hole and the oil hole of the connecting rod and harden in the hole to form micro inclusions. These inclusions may become crack sources under alternating loads, reduce the fatigue life of the hole edge, and seriously affect the service life and reliability of the connecting rod. In addition, the existing dust removal system has limited filtering precision (usually 5 mu m), and cannot completely remove such fine dust, resulting in dust pollution of the working environment and increasing the difficulty of subsequent cleaning.

[0005] Therefore, based on the above retrieval and in combination with the prior art, a medium excavator connecting rod machining and polishing device is provided to solve the above problems. SUMMARY

[0006] The purpose of the present application is to provide a medium excavator connecting rod machining and polishing device to solve the problems raised in the background.

[0007] To achieve the above purpose, the present application provides the following technical scheme:

[0008] A medium-sized excavator connecting rod processing and polishing device, comprising: a base, a workbench is fixedly installed on the top surface of the base, two moving rails are fixedly installed on the top surface of the workbench, a moving plate is slidably installed between the two moving rails, a mechanical arm is fixedly installed on the top surface of the moving plate, a polishing head is arranged at the end of the mechanical arm, and a connecting rod body is arranged on the top surface of the workbench; a protection device is arranged on the base, the protection device comprises: a connecting rod arranged on the workbench, a connecting plate is fixedly installed on the right side wall of the connecting rod, two moving blocks are arranged on the right side wall of the connecting plate, two protection rods are fixedly installed on the right side wall of each of the two moving blocks, a fixed rod is fixedly installed on the top surface of each of the two moving blocks, a fixed plate is fixedly installed on the top surface of each of the two fixed rods, two threaded rods are arranged below each of the two fixed plates, a sealing plug is threadedly connected to the outer surface of each of the four threaded rods, and the protection device further comprises a dust removal assembly and an adjusting assembly.

[0009] Further, the dust removal assembly comprises: a dust collector arranged on the top surface of the workbench, a communication groove is formed in the right side wall of each of the two protection rods, a plurality of dust suction openings are formed in the outer surface of each of the two communication grooves, a three-way pipe is arranged on the front side wall of the dust collector, the two ends of the three-way pipe are respectively in communication with the interiors of the two communication grooves, and a dust outlet pipe is arranged on the rear side wall of the dust collector.

[0010] Further, the collecting piece comprises: a collecting box fixedly installed on the top surface of the threaded rod, a cover plate is arranged on the top surface of the collecting box, the other side of the dust outlet pipe is in communication with the interior of the collecting box, a plurality of filter plates are arranged in the interior of the collecting box, and a plurality of air outlets are formed in the rear side wall of the collecting box.

[0011] Further, the adjusting assembly comprises: a first limiting rod arranged in the interior of the connecting plate, a moving groove is formed in the right side wall of the connecting plate, the first limiting rod is located in the moving groove, two sliding blocks are sleeved with the outer surface of the moving groove, and the two sliding blocks move in the moving groove.

[0012] Further, the adjusting assembly further comprises: two second limiting rods, the two second limiting rods are respectively arranged in the interiors of the two fixed plates, a sliding groove is formed in the bottom surface of each of the two fixed plates, two sliding blocks are respectively sleeved with the outer surfaces of the two second limiting rods, and the four sliding blocks move in the two sliding grooves.

[0013] Further, an electric push rod two is fixedly installed on the top surface of the workbench, and the output end of the electric push rod two is connected with the left side wall of the connecting rod.

[0014] Further, the left side walls of the two moving blocks are connected with the right side walls of the two sliders respectively, and the top surfaces of the four threaded rods are connected with the bottom surfaces of the four sliding blocks respectively.

[0015] Further, the fixed assembly comprises a rectangular plate fixedly installed on the top surface of the base, a rectangular groove is formed in the side wall of the rectangular plate, a mounting plate is fixedly installed on the right side wall of the rectangular plate, an electric push rod one is fixedly installed on the bottom surface of the mounting plate, a pressing plate is fixedly installed on the output end of the electric push rod one, and the pressing plate extrudes and fixes the top surface of the connecting rod body.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1、In the present application, the protective device is provided to accurately plug and protect the connecting hole and oil hole of the connecting rod. During the grinding process, the protective rod can be accurately sleeved in the connecting hole, and the sealing plug can tightly plug the oil hole to prevent metal dust from entering the hole and hardening to form micro inclusions. This design effectively avoids the problem of reduced hole edge fatigue life caused by dust plugging, significantly improves the service life and reliability of the connecting rod, and reduces the risk of failure caused by hole damage.

[0018] 2、In the present application, the dust removal assembly is provided, which adopts the combination of a dust collector and a protective rod. The metal dust generated during the grinding process is sucked through the dust suction port and the communication groove, and is discharged into the collection box through the three-way pipe and the dust discharge pipe. The multiple filter plates in the collection box can effectively intercept dust, and the filtered air is discharged through the air outlet, ensuring the cleanliness of the working environment. This efficient dust removal and dust collection system not only reduces the pollution of dust to the working environment, but also reduces the difficulty of dust cleaning, improves the efficiency and quality of the grinding work, and provides a safer and healthier working environment for the operator. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a left side structure schematic view of the present application;

[0020] Figure 2 It is a right side structure schematic view of the present application;

[0021] Figure 3 It is a whole structure schematic view of the protective device of the present application;

[0022] Figure 4 It is a split structure schematic view of the protective device of the present application;

[0023] Figure 5 It is a split structure schematic view of the moving block and the connecting plate of the present application;

[0024] Figure 6 It is a bottom structure schematic view of the fixed plate of the present application;

[0025] Figure 7 The schematic diagram of the internal structure of the collection box of the present application is shown in Figure 1.

[0026] Figure 8 The schematic diagram of the enlarged structure at A in the present application is shown in Figure 2. Figure 5

[0027] In the figure: 1, base; 2, workbench; 3, moving track; 4, moving plate; 5, mechanical arm; 6, polishing head; 7, rectangular plate; 8, rectangular groove; 9, mounting plate; 10, electric push rod I; 11, pressing plate; 12, connecting rod body; 13, connecting rod; 14, connecting plate; 15, moving block; 16, protective rod; 17, communication groove; 18, dust suction port; 19, fixed rod; 20, fixed plate; 21, threaded rod; 22, sealing plug; 23, electric push rod II; 24, dust collector; 25, three-way pipe; 26, dust outlet pipe; 27, collection box; 28, cover plate; 29, filter plate; 30, air outlet; 31, moving groove; 32, limiting rod I; 33, sliding block; 34, sliding groove; 35, limiting rod II; 36, sliding block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0029] In a typical embodiment of the present application, please refer to Figures 1-8 Figure 1 shows a medium excavator connecting rod machining and polishing device, which comprises a base 1, the top surface of the base 1 is fixedly installed with a workbench 2, the top surface of the workbench 2 is fixedly installed with two moving tracks 3, the moving plate 4 is slidingly installed between the two moving tracks 3, the top surface of the moving plate 4 is fixedly installed with a mechanical arm 5, the distal end of the mechanical arm 5 is provided with a polishing head 6, and the top surface of the workbench 2 is provided with a connecting rod body 12.

[0030] The protective device is arranged on the base 1, and the protective assembly comprises a connecting rod 13 arranged on the workbench 2, a connecting plate 14 fixedly installed on the right side wall of the connecting rod 13, two moving blocks 15 arranged on the right side wall of the connecting plate 14, two protective rods 16 fixedly installed on the right side walls of the two moving blocks 15 respectively, two fixed rods 19 fixedly installed on the top surfaces of the two moving blocks 15 respectively, two fixed plates 20 fixedly installed on the top surfaces of the two fixed rods 19 respectively, two threaded rods 21 arranged below the two fixed plates 20 respectively, two sealing plugs 22 threadedly connected to the outer surfaces of the four threaded rods 21 respectively, and a dust removal assembly and an adjusting assembly. ​

[0031] A fixing component is provided on the base 1.

[0032] Through the above features, when the operator grinds the outer surface of the connecting rod body 12, the connecting holes and oil holes of the connecting rod body 12 can be blocked. This prevents metal dust particles smaller than 20μm from the fixed plate from easily penetrating into the holes and hardening, forming micro-embedded objects. These embedded objects can become crack sources under alternating loads, reducing the fatigue life of the hole edges. Specifically, during use, the positions of the two protective rods 16 are adjusted according to the connecting holes of the connecting rod body 12, and then respectively fitted into the two connecting holes of the connecting rod body 12. The positions of the threaded rod 21 and the sealing plug 22 are then adjusted so that they are above the oil hole. The sealing plug 22 is rotated to block the oil hole, preventing metal dust generated during grinding from falling into the connecting holes and oil holes.

[0033] As a preferred embodiment of this example, please refer to [link / reference]. Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the dust removal assembly includes: a vacuum cleaner 24, which is installed on the top surface of the workbench 2. The right side walls of the two protective rods 16 are provided with connecting grooves 17, and the outer surfaces of the two connecting grooves 17 are provided with multiple suction ports 18. The front side wall of the vacuum cleaner 24 is provided with a three-way pipe 25, and the two ends of the three-way pipe 25 are respectively connected to the interior of the two connecting grooves 17. The rear side wall of the vacuum cleaner 24 is provided with a dust outlet pipe 26. The dust removal assembly also includes a collection component.

[0034] Through the above features, when grinding the connecting hole and oil hole of the connecting rod body 12, the metal dust generated during grinding can be eliminated. Specifically, the vacuum cleaner 24 is turned on, and negative pressure is generated at the front end of the two protective rods 16. The metal dust generated during grinding flows into the three-way pipe 25 through the dust suction port 18 and the connecting groove 17, and is then discharged through the dust outlet pipe 26.

[0035] As a preferred embodiment of this example, please refer to [link / reference]. Figure 7 As shown, the collection component includes: a collection box 27, which is fixedly installed on the top surface of the threaded rod 21. A cover plate 28 is provided on the top surface of the collection box 27. The other side of the dust outlet pipe 26 is connected to the interior of the collection box 27. Multiple filter plates 29 are provided inside the collection box 27. The filter plates 29 can be nanofiber filter plates, activated carbon fiber filter plates, polytetrafluoroethylene (PTFE) membrane filter plates, glass fiber filter plates, or ceramic fiber filter plates. Multiple air outlets 30 are opened on the rear side wall of the collection box 27.

[0036] Based on the above features, metal dust can be collected. Specifically, when the dust outlet pipe 26 sprays metal dust into the collection box 27, multiple filter plates 29 will filter and intercept the dust, and then the filtered air is discharged through the air outlet 30.

[0037] As a preferred embodiment of this example, please refer to [link / reference]. Figure 5 As shown, the adjustment assembly includes: a limiting rod 32, which is disposed inside the connecting plate 14. A moving groove 31 is provided on the right side wall of the connecting plate 14. The limiting rod 32 is located in the moving groove 31. Two sliders 33 are sleeved on the outer surface of the moving groove 31, and both sliders 33 move in the moving groove 31.

[0038] As a preferred embodiment of this example, please refer to [link / reference]. Figure 6 As shown, the adjustment assembly also includes: two limiting rods 35, which are respectively set inside the fixed plate 20. The bottom surfaces of the two fixed plates 20 are provided with sliding grooves 34. The outer surfaces of the two limiting rods 35 are respectively fitted with two sliding blocks 36, and the four sliding blocks 36 move in the two sliding grooves 34 respectively.

[0039] Based on the above features, the positions of the two protective rods 16 and the four threaded rods 21 and sealing plugs 22 can be adjusted. Specifically, when adjustment is required, the operator only needs to move the two protective rods 16 to make the moving block 15 and the slider 33 move synchronously, so that the protective rods 16 can be adjusted according to the position of the connecting hole of the connecting rod body 12. The adjustment principle of the threaded rods 21 and sealing plugs 22 is the same as above.

[0040] As a preferred embodiment of this example, please refer to [link / reference]. Figures 1-5 As shown, an electric actuator 23 is fixedly installed on the top surface of the workbench 2, and the output end of the electric actuator 23 is connected to the left side wall of the connecting rod 13.

[0041] Based on the above features, when the connecting rod body 12 grinds the connecting hole, the electric actuator 23 will gradually start, causing the protective rod 16 to gradually exit the connecting hole of the connecting rod body 12. When grinding the oil hole, the sealing plug 22 will be rotated out of the oil hole. Then, the protective rod 16 will be positioned on the side below the oil hole, and the vacuum cleaner 24 will be turned on to prevent the generated metal dust from seeping into the hole and hardening, forming a micro-embedded material.

[0042] As a preferred embodiment of this example, please refer to [link / reference]. Figure 5 and Figure 6 As shown, the left side walls of the two movable blocks 15 are connected to the right side walls of the two sliders 33 respectively, and the top surfaces of the four threaded rods 21 are connected to the bottom surfaces of the four sliders 36 respectively.

[0043] As a preferred embodiment in the present embodiment, please refer to Figures 1-4 As shown in the figure, the fixing assembly comprises: a rectangular plate 7 fixedly installed on the top surface of the base 1, a rectangular groove 8 is formed in the side wall of the rectangular plate 7, and a mounting plate 9 is fixedly installed on the right side wall of the rectangular plate 7, the bottom surface of the mounting plate 9 is fixedly installed with an electric push rod one 10, the output end of the electric push rod one 10 is fixedly installed with a pressing plate 11, and the pressing plate 11 extrudes and fixes the top surface of the connecting rod body 12.

[0044] Through the above features, the connecting rod body 12 can be fixed. Specifically, when the connecting rod body 12 is placed on the top surface of the workbench 2, the electric push rod one 10 is started, and the descent of the electric push rod one 10 drives the pressing plate 11 connected with the output end of the electric push rod one 10 to press and fix the top surface of the connecting rod body 12, which facilitates the cooperation of the mechanical arm 5 and the polishing head 6 to polish the connecting rod body 12.

[0045] Working principle:

[0046] In use, first, the connecting rod body 12 is placed on the top surface of the workbench 2. The connecting rod body 12 is fixed by the fixing assembly. The specific operation is to start the electric push rod 1, and the output end drives the pressing plate 11 to descend, and the pressing plate 11 exerts pressure on the top surface of the connecting rod body 12, so that the connecting rod body 12 is firmly fixed on the workbench 2, and displacement of the connecting rod body 12 in the grinding process is ensured. Then, according to the positions of the connecting hole and the oil hole of the connecting rod body 12, the positions of the protection rod 16 and the sealing plug 22 in the protection device are adjusted. By moving the protection rod 16, the moving block 15 is slid in the moving groove 31 of the connecting plate 14, and the sliding block 33 is synchronously moved on the limiting rod 1, so that the position of the protection rod 16 is adjusted, and the protection rod 16 can be accurately sleeved in the connecting hole of the connecting rod body 12. For the sealing of the oil hole, the positions of the threaded rod 21 and the sealing plug 22 are adjusted, so that they are located above the oil hole, and then the sealing plug 22 is rotated, so that the sealing plug 22 tightly plugs the oil hole, preventing metal dust generated in the grinding process from entering the hole. In the grinding process, the mechanical arm 5 drives the grinding head 6 to grind the outer surface of the connecting rod body 12. At this time, the dust removal assembly in the protection device starts to work. The dust collector 24 is turned on, and the dust collector 24 is connected with the communication groove 17 in the protection rod 16 through the three-way pipe 25, the dust suction port 18 at the front end of the protection rod 16 generates negative pressure, metal dust generated in the grinding process is sucked into the communication groove 17, then flows into the dust outlet pipe 26 through the three-way pipe 25, and finally is discharged into the collection box 27. The plurality of filter plates 29 in the collection box 27 filter and intercept the metal dust, the filtered air is discharged through the air outlet 30, so that the metal dust is effectively collected and treated. When the connecting hole of the connecting rod body 12 needs to be ground, the electric push rod 2 is started, and the output end pushes the connecting rod 13 to move, so that the protection rod 16 gradually exits the connecting hole of the connecting rod body 12. At this time, the sealing plug 22 remains in the sealed state of the oil hole, preventing metal dust from entering the oil hole. When the oil hole needs to be ground, the sealing plug 22 is rotated out of the oil hole, and the position of the protection rod 16 is adjusted, so that it is located on one side below the oil hole, and the dust collector 24 remains in the open state, so as to prevent metal dust from penetrating into the oil hole and hardening to form micro inclusions.

[0047] The above merely describes a preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A medium excavator boom machining and polishing apparatus, characterized by: Include: The base (1), the top surface of the base (1) is fixedly installed with a workbench (2), the top surface of the workbench (2) is fixedly installed with two moving rails (3), two moving rails (3) are slidably installed with a moving plate (4), the top surface of the moving plate (4) is fixedly installed with a mechanical arm (5), the end of the mechanical arm (5) is provided with a polishing head (6), the top surface of the workbench (2) is provided with a connecting rod body (12); Guard, guard is arranged on the base (1), guard assembly includes: Connecting rod (13), the connecting rod (13) is arranged on the workbench (2), the right side wall of the connecting rod (13) is fixedly installed with a connecting plate (14), the right side wall of the connecting plate (14) is provided with two moving blocks (15), the right side wall of two moving blocks (15) is fixedly installed with a guard rod (16) respectively, the top surface of two moving blocks (15) is fixedly installed with a fixed rod (19) respectively, the top surface of two fixed rods (19) is fixedly installed with a fixed plate (20) respectively, two fixed plates (20) below are provided with two threaded rods (21), the outer surface of four threaded rods (21) is threadedly connected with a sealing plug (22), the guard further includes dust removal assembly and adjusting assembly; Fixed assembly, fixed assembly is arranged on the base (1).

2. A medium excavator link machining and grinding device according to claim 1, characterized in that: Dust removal assembly includes: Dust collector (24), the dust collector (24) is arranged on the top surface of the workbench (2), the right side wall of two guard rods (16) is provided with a communication groove (17), a plurality of dust suction ports (18) are formed in the outer surface of two communication grooves (17), the front side wall of the dust collector (24) is provided with a three-way pipe (25), the two ends of the three-way pipe (25) are communicated with the interiors of two communication grooves (17) respectively, the rear side wall of the dust collector (24) is provided with a dust outlet pipe (26), the dust removal assembly further includes a collecting device.

3. A medium excavator link machining and grinding device according to claim 2, characterized in that: The collecting device includes: The collecting box (27) is fixedly installed on the top surface of the threaded rod (21), the top surface of the collecting box (27) is provided with a cover plate (28), the other side of the dust outlet pipe (26) is communicated with the interior of the collecting box (27), a plurality of filter plates (29) are arranged in the interior of the collecting box (27), a plurality of air outlets (30) are formed in the rear side wall of the collecting box (27).

4. The medium excavator link machining and grinding device according to claim 1, characterized in that: Adjusting assembly includes: Limiting rod one (32), the limiting rod one (32) is arranged in the interior of the connecting plate (14), the right side wall of the connecting plate (14) is provided with a moving groove (31), the limiting rod one (32) is located in the moving groove (31), the outer surface of the moving groove (31) is sleeved with two sliding blocks (33), two sliding blocks (33) move in the moving groove (31).

5. A medium excavator link machining and grinding device according to claim 1, characterized in that: The adjusting assembly further includes: Two limiting rods two (35) are arranged in the interior of the fixed plate (20), the bottom surface of the two fixed plates (20) is provided with a sliding groove (34), the outer surface of the two limiting rods two (35) is sleeved with two sliding blocks (36), and the four sliding blocks (36) move in the two sliding grooves (34) respectively.

6. A medium excavator link machining and grinding device according to claim 5, characterized in that: The top surface of the workbench (2) is fixedly installed with an electric push rod two (23), and the output end of the electric push rod two (23) is connected with the left side wall of the connecting rod (13).

7. A medium excavator link machining and grinding apparatus according to claim 1, characterized in that: The left side wall of the two moving blocks (15) is connected with the right side wall of the two sliding blocks (33), and the top surface of the four threaded rods (21) is connected with the bottom surface of the four sliding blocks (36).

8. A medium excavator link machining and grinding apparatus according to claim 1, characterized by: The fixing assembly comprises: A rectangular plate (7) is fixedly installed on the top surface of the base (1), a rectangular groove (8) is formed in the side wall of the rectangular plate (7), a mounting plate (9) is fixedly installed on the right side wall of the rectangular plate (7), an electric push rod one (10) is fixedly installed on the bottom surface of the mounting plate (9), the output end of the electric push rod one (10) is fixedly installed with a pressing plate (11), and the pressing plate (11) extrudes and fixes the top surface of the connecting rod body (12).

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