Conveying device for diesel engine connecting rod surface treatment

Abstract

The invention relates to the technical field of diesel engine connecting rod surface treatment equipment, in particular to a conveying device for diesel engine connecting rod surface treatment. Comprising a hanger rail, a rack, a tackle and a suspension mechanism, the hanger rail is arranged above the rack, a treatment groove is formed in the upper side of the rack, the tackle is slidably installed on the hanger rail, the suspension mechanism is connected with the tackle through a lifting driving piece, and the lifting driving piece is used for driving the suspension mechanism to move up and down; the suspension mechanism further comprises an elastic oscillation starting piece and oscillation starting rails installed on the two sides of the rack, the output end of the lifting driving piece is elastically connected with the suspension mechanism through the elastic oscillation starting piece, and a plurality of evenly-distributed conical protrusions are arranged on the oscillation starting rails. It is ensured that the whole surface of the connecting rod is processed under the more consistent condition; therefore, more uniform dissolution rate and surface smoothness are obtained; defects such as stripes, pitting corrosion and cloud spots caused by bubble retention or uneven current are obviously reduced in a moving state.

Description

TECHNICAL FIELD

[0001] The present application relates to the diesel engine connecting rod surface treatment equipment technical field, particularly to a kind of diesel engine connecting rod surface treatment conveying device. BACKGROUND

[0002] Diesel engine connecting rod is an important component of engine, which is used to connect piston and crankshaft, and the connecting rod needs to be polished, cleaned and other processes after preliminary machining, and some connecting rods also need to form a protective film or reinforcing layer on the surface by spraying or soaking.

[0003] In order to improve the service life of connecting rod, the surface treatment of connecting rod needs to be very uniform, especially the treatment of the tooth-shaped joint surface of diesel engine connecting rod. In order to facilitate connection, the through hole at the large end of the engine connecting rod is a split structure for connecting rod body and rod cover, and the joint surface of rod body and rod cover is usually designed as a tooth-shaped joint surface. During the processing of the tooth-shaped joint surface, a lot of burrs will be generated. In order to ensure the tightness of the tooth-shaped joint surface, the joint surface must be deburred, cleaned and other treatments. Therefore, a conveying device is needed to carry the connecting rod through the polishing liquid, cleaning liquid or other treatment liquid treatment device to complete the treatment of the connecting rod surface, especially the tooth-shaped joint surface.

[0004] In the past, in order to make the tooth-shaped joint surface fully contact with the treatment liquid, the rod body and the rod cover are usually treated separately, or a specially made clamp is needed. For example, the utility model with publication number CN204546271U discloses a grinding clamp for tooth-shaped joint surface of medium-speed marine diesel engine connecting rod, which has a connecting rod body mounting area on the left side of the clamp body and a connecting rod cover mounting area on the right side of the clamp body, realizing simultaneous clamping and processing of the rod body and the rod cover. However, when the connecting rod surface is treated with treatment liquid, other parts of the connecting rod also need to be treated, and the clamp will cause the clamped part of the connecting rod to be unable to contact the treatment liquid.

[0005] The patent application with the publication number CN120589386A discloses a hoisting type conveying device of an ultrasonic cleaning machine, which comprises a hoisting conveying component. The lower end of the hoisting conveying component is connected with a reserved butt joint component through a transmission component, and the reserved butt joint component is connected with the outer side of a workpiece to be processed for conveying work. The hoisting type conveying device of the ultrasonic cleaning machine drives the workpiece to be suspended and conveyed by the driving of the hoisting conveying component. Compared with a clamp, the contact area of the hoisting type conveying structure and the connecting rod is smaller, which is more conducive to the treatment of the connecting rod surface by the treatment liquid. However, in some treatments such as electrolytic polishing, cleaning or coating of the connecting rod, the treatment effect is highly dependent on the uniformity of the treatment liquid near the surface of the workpiece. During the process of immersing the connecting rod into the treatment liquid and standing by the hoisting conveying component, especially when the power is on, the treatment liquid will generate bubbles and heat. If the connecting rod is in a stationary state, the treatment liquid near the surface of the connecting rod will soon become "stale", and the bubbles are easy to adhere to the surface of the connecting rod to form air pockets or stripes. The accumulation of reaction products will cause uneven treatment of the surface of the connecting rod (easy to appear bright and dark stripes, pitting). Moreover, the phenomenon of uneven current distribution will be more obvious in the stationary state of the connecting rod, which will cause excessive treatment of the edges and corners, and insufficient treatment of the recesses or areas away from the cathode, thereby affecting the overall quality of the connecting rod. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application provides a conveying device for surface treatment of a connecting rod of a diesel engine, which can realize surface treatment of the connecting rod during movement, and the connecting rod will vibrate with the elastic vibration member, thereby improving the uniformity of the concentration and temperature of the treatment liquid, and enabling each part of the connecting rod to be in uniform and sufficient contact with the treatment liquid, so as to obtain a more uniform surface finish.

[0007] To achieve the above-mentioned purpose, in a first aspect, the present application provides the following technical solution: a conveying device for surface treatment of a connecting rod of a diesel engine, which is used for conveying the connecting rod. The connecting rod comprises a rod body and through holes at both ends of the rod body. The conveying device comprises a hoisting rail, a rack, a trolley and a suspension mechanism. The hoisting rail is arranged above the rack. The rack is provided with a treatment tank on the upper side. The trolley is slidingly installed on the hoisting rail. The suspension mechanism is connected to the trolley through a lifting drive. The lifting drive is used to drive the suspension mechanism to move up and down. The conveying device further comprises an elastic vibration member and vibration tracks installed on both sides of the rack. The output end of the lifting drive is elastically connected to the suspension mechanism through the elastic vibration member. The vibration tracks are provided with a plurality of uniformly distributed conical protrusions. The lifting drive drives the suspension mechanism to contact the vibration tracks, so that the connecting rod vibrates.

[0008] The hoisting rail is arranged above the middle part of the treatment tank and parallel to the treatment tank. The trolley is a hoisting rail type walking trolley. The trolley is provided with a power mechanism for moving along the hoisting rail.

[0009] The elastic vibration starting part can be a spring alone or other equivalent part with elastic supporting effect; the tip of the conical protrusion is rounded.

[0010] Preferably, the elastic vibration starting part comprises a frame body and elastic connecting parts installed on both sides of the bottom of the frame body, the elastic connecting parts comprise two connecting rods arranged in an up-down manner, an L-shaped frame and a connecting spring, one end of each of the two connecting rods is hingedly connected with the frame body, the other end of each of the two connecting rods is hingedly connected with the L-shaped frame, the top of the connecting spring is fixedly connected with the frame body, and the bottom of the connecting spring is fixedly connected with the L-shaped frame.

[0011] Further, the output end of the lifting driving part is fixedly connected with the top of the frame body, and the four hinge points of the two connecting rods at the hinge connection positions of the frame body and the L-shaped frame enclose a parallelogram, and the installation cross frame is installed on the bottom of the beam frame.

[0012] Preferably, guide rails are further installed on both sides of the rack, the vibration starting rail is located above the guide rails, and the vibration starting rail is connected with an avoiding mechanism for driving the vibration starting rail to rotate and shift.

[0013] Further, the driving cylinder can be an electric telescopic cylinder, a hydraulic telescopic cylinder or a pneumatic telescopic cylinder, and external municipal power supply, hydraulic system or air pressure system can be used to provide kinetic energy for the telescopic movement of the driving cylinder.

[0014] Preferably, the avoiding mechanism comprises a mounting seat fixedly connected with the rack, a rotating frame hingedly installed on the mounting seat and a driving cylinder for providing power for the rotation of the rotating frame, one end of the driving cylinder is hingedly connected with the mounting seat, the other end of the driving cylinder is hingedly connected with the rotating frame, and the vibration starting rail is installed on the top of the rotating frame.

[0015] Preferably, the suspension mechanism comprises a beam frame, a first suspension assembly and a second suspension assembly, the beam frame is connected with the elastic vibration starting part, the first suspension assembly and the second suspension assembly are arranged on the lower side of the beam frame, and the first suspension assembly and the second suspension assembly respectively pass through the two through holes of the connecting rod. A pushing part is further arranged on the treatment tank or the suspension mechanism, and the pushing part is used to push the connecting rod on the first suspension assembly to the second suspension assembly.

[0016] Further, the lifting driving part is preferably an electric telescopic cylinder, the beam frame is installed on the output end of the electric telescopic cylinder, and the lifting driving part can also adopt equivalent parts with the function of driving the beam frame to lift, such as a mechanical sliding stage and a scissor lifting mechanism.

[0017] Preferably, the first suspension assembly comprises a first hanger, a first horizontal hanger rod is arranged on the first hanger, and the first horizontal hanger rod is inserted into a group of through holes in the upper part of the rod body. The second suspension assembly comprises a second hanger, a second hanger rod arranged in parallel with the first hanger rod and below the first hanger rod, the second hanger rod is inserted into a through hole in the lower part of the connecting rod, and the outer diameter of the second hanger rod is smaller than the inner diameter of the corresponding through hole.

[0018] Further, when the connecting rod is suspended at the first hanger rod, the central axis of the second hanger rod coincides with the central axis of the corresponding through hole on the connecting rod, and the outer diameter of the first hanger rod and the second hanger rod can be 1 / 3-1 / 2 of the inner diameter of the corresponding through hole; the pushing member can be a pushing plate and a telescopic cylinder, the pushing plate is installed on the output end of the telescopic cylinder, and the pushing plate pushes the corresponding connecting rod from the first hanger rod to the second hanger rod by starting the telescopic cylinder; the first hanger, the first hanger rod and the corresponding mounting rod are integrally connected, and the second hanger, the second hanger rod and the corresponding mounting rod are integrally connected.

[0019] Preferably, the top middle of the beam is hinged to the elastic vibration member, the bottom of the beam is provided with a mounting cross beam, the mounting cross beam is provided with two mounting rods arranged side by side, the first hanger is fixedly connected with one of the mounting rods, and the second hanger is fixedly connected with the other mounting rod.

[0020] Preferably, the pushing member comprises a plurality of liquid distribution pipes installed on the inner wall of one side of the treatment tank and a circulating pump installed on the rack, the output end of the circulating pump extends into the treatment tank, the output end of the circulating pump is in communication with the input end of the plurality of liquid distribution pipes, the output end of each of the plurality of liquid distribution pipes is provided with a right-angle nozzle, and the output end of the right-angle nozzle faces the side of the corresponding connecting rod.

[0021] Further, the plurality of right-angle nozzles are arranged corresponding to the connecting rods on the plurality of first hangers.

[0022] Preferably, the input end of the circulating pump extends into the treatment tank away from the bottom of the side of the liquid distribution pipe.

[0023] Preferably, the end of the second hanger rod is provided with an upward blocking vertical rod, and the length of the blocking vertical rod is smaller than the inner diameter of the through hole.

[0024] In a second aspect, the application also provides a device for deburring the tooth-shaped joint surface of a connecting rod of a diesel engine, comprising the conveying device for surface treatment of the connecting rod of the diesel engine, the vibration track is connected with the positive electrode of the external power supply, the treatment tank is connected with the negative electrode of the external power supply, the rod body and the rod cover of the connecting rod are connected by bolts, and the tooth-shaped joint surfaces on the rod body and the rod cover are spaced apart.

[0025] An electric heater is installed on the bottom of the treatment tank, and the electric heater is used for heating the electrolyte in the treatment tank.

[0026] Preferably, the tooth-shaped joint surfaces are spaced apart by at least 2 cm.

[0027] Further, the bolt upper end is threadedly connected with the rod body, and the diameter of the bolt lower part is smaller than that of the connecting hole on the rod cover.

[0028] Further, the first hanger, the second hanger, the first hanger rod and the second hanger rod are made of conductive copper material.

[0029] Further, the first suspension assembly is provided with a clamping mechanism for clamping the connecting rod. The clamping mechanism can ensure that the connecting rod reliably contacts the first suspension assembly, prevent poor contact between the connecting rod and the first suspension assembly during vibration, and ensure continuous electrolytic polishing.

[0030] Further, the clamping mechanism comprises a clamping rod, a clamping spring and a clamping disengagement driving element. The clamping rod is rotatably arranged on the first suspension assembly. The clamping spring is arranged between the first suspension assembly and the clamping rod. The clamping spring presses the connecting rod on one end of the clamping rod on the first suspension assembly. One end of the clamping disengagement driving element is connected to the mounting crossbar, and the other end corresponds to the other end of the clamping rod.

[0031] Specifically, the clamping disengagement driving element is a clamping disengagement air cylinder. One end of the clamping disengagement air cylinder is fixedly connected to the mounting crossbar, and the other end is arranged on the upper side of the other end of the clamping rod. After the clamping disengagement air cylinder operates, the piston rod of the air cylinder pushes the clamping rod to swing, so that the clamping rod is disengaged from the connecting rod.

[0032] Alternatively, the clamping mechanism comprises a clamping rod and a clamping disengagement driving element. The clamping rod is rotatably arranged on the first suspension assembly. One end of the clamping disengagement driving element is rotatably connected to the mounting crossbar, and the other end is rotatably connected to the clamping rod.

[0033] Preferably, one end of the clamping rod is provided with an arc-shaped clamping piece for clamping the connecting rod. One end of the connecting rod is clamped between the arc-shaped clamping piece and the first hanger rod, ensuring reliable connection of the connecting rod and the first hanger rod.

[0034] In a third aspect, the present application also provides a process for deburring the connecting rod tooth-shaped joint surface of a diesel engine, comprising the following steps: 1) The connecting rod is suspended on the suspension mechanism. The rod body and the rod cover of the connecting rod are connected by bolts, and the tooth-shaped joint surfaces on the rod body and the rod cover are arranged at intervals; 2) The lifting driving element drives the suspension mechanism to move downward until the mounting crossbar falls onto the vibration track. The tooth-shaped joint surfaces of the rod body and the rod cover of the connecting rod are immersed in the electrolyte in the treatment tank, and the electrolytic polishing treatment is performed on the tooth-shaped joint surfaces and the inner wall of the through hole at the lower part of the connecting rod.

[0035] Preferably, the suspension mechanism comprises a beam frame, a first suspension assembly and a second suspension assembly. The first suspension assembly and the second suspension assembly are respectively connected to the two through holes of the connecting rod. A pushing member is arranged in the treatment tank, and is used to push the connecting rod on the first suspension assembly to the second suspension assembly.

[0036] In step 1, the through hole of the upper part of the connecting rod is suspended on the first suspension assembly, the through hole of the lower part of the connecting rod is sleeved outside the second suspension assembly, and the through hole is arranged in a spaced manner with the second suspension assembly.

[0037] Step 3) is further included, after the tooth-shaped joint surface and the inner wall of the through hole of the lower part of the connecting rod are electrolytically polished in step 2), the pushing member pushes the connecting rod on the first suspension assembly to the second suspension assembly, so that the connecting rod is separated from the first suspension assembly, the connecting rod is only suspended on the second suspension assembly, and the other inner wall of the through hole of the connecting rod is electrolytically polished.

[0038] Preferably, in step 1, the trolley reciprocally slides on the hanging rail, the installation cross and the vibration track are always in contact, and the connecting rod reciprocally moves in the treatment tank while being vibrated up and down.

[0039] Compared with the prior art, the diesel engine connecting rod surface treatment conveying device has the following beneficial effects: the lifting driving member drives the suspension mechanism to move downward, the connecting rod is fully or partially immersed in the treatment liquid in the treatment tank, the suspension mechanism contacts the vibration track, so that the connecting rod is vibrated up and down in the treatment liquid, thereby realizing sufficient stirring of the treatment liquid, forcibly making the treatment liquid flow on the surface, faster taking away bubbles, reaction products and heat, and at the same time, bringing fresh treatment liquid with uniform concentration and temperature to the surface of the connecting rod, so that the entire surface of the connecting rod is treated under more consistent conditions, thereby obtaining more uniform dissolution rate and surface finish; and the defects such as stripes, pitting and cloud spots caused by bubble retention or uneven current are significantly reduced in the moving state.

[0040] Meanwhile, the trolley reciprocally slides from the hanging rail, further stirs the treatment liquid, and the treatment liquid is more uniform, so that more uniform dissolution rate and surface finish are obtained. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a three-dimensional structural schematic diagram of the present application.

[0042] Figure 2 is a right view plane structural schematic diagram of the present application.

[0043] Figure 3 is a top view plane structural schematic diagram of the present application.

[0044] Figure 4 is a three-dimensional structural schematic diagram of the present application. Figure 2 is a sectional view structural schematic diagram of A-A in the present application.

[0045] Figure 5is a schematic view of a cross-sectional structure at B-B of the present application. Figure 2 is a schematic view of a cross-sectional structure at B-B of the present application.

[0046] Figure 6 is a schematic view of a cross-sectional structure at B-B of the present application.

[0047] Figure 7 is a schematic view of a cross-sectional structure at B-B of the present application. Figure 2 is a schematic view of a cross-sectional structure at B-B of the present application.

[0048] Figure 8 is a schematic view of a cross-sectional structure at B-B of the present application. Figure 4 is a schematic view of a cross-sectional structure at B-B of the present application.

[0049] Figure 9 is a schematic view of a cross-sectional structure at B-B of the present application. Figure 5 is a schematic view of a cross-sectional structure at B-B of the present application.

[0050] Figure 10 is a schematic view of a cross-sectional structure at B-B of the present application.

[0051] In the drawings: 1, frame; 2, treatment tank; 3, hanging rail; 4, trolley; 5, lifting driving part; 6, guide rail; 7, rod body; 8, rod cover; 9, beam frame; 10, mounting cross frame; 11, first hanging frame; 12, first hanging rod; 13, vibration starting rail; 14, conical protrusion; 15, frame body; 16, connecting rod; 17, L-shaped frame; 18, connecting spring; 19, mounting rod; 20, mounting seat; 21, rotating frame; 22, driving cylinder; 23, second hanging frame; 24, second hanging rod; 25, liquid distribution pipe; 26, circulating pump; 27, right-angle nozzle; 28, blocking vertical rod; 29, electric heater; 30, through hole; 31, bolt; 32, clamping rod; 33, arc-shaped clamping piece; 34, clamping spring; 35, clamping disengaging cylinder. DETAILED DESCRIPTION

[0052] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a 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 persons skilled in the art without creative labor should fall within the protection scope of the present application.

[0053] It should be noted that, in the case of no conflict, the embodiments in the present application and the features and technical solutions in the embodiments can be combined with each other.

[0054] Embodiment 1 Please refer to Figures 1-5The application relates to a conveying device for surface treatment of a connecting rod of a diesel engine, the connecting rod comprising a rod body 7 and a rod cover 8 connected to the lower part of the rod body 7, a through hole 30 being formed between the rod body 7 and the rod cover 8, and the upper end of the rod body 7 also having a through hole 30 integrally formed. The joint surface of the rod body 7 and the rod cover 8 is a tooth-shaped joint surface. The conveying device comprises a frame 1, a hanging rail 3, a trolley 4, a lifting driving element 5 and a suspension mechanism. The hanging rail 3 is horizontally arranged above the frame 1, the trolley 4 is slidingly arranged on the hanging rail 3, and the suspension mechanism is arranged on the trolley 4 through the lifting driving element 5. The lifting driving element 5 is used to drive the suspension mechanism to move up and down.

[0055] The frame 1 is provided with a treatment groove 2 which is open upward, and the hanging rail 3 is arranged along the length direction of the treatment groove 2. The trolley 4 is a hanging rail type travelling trolley, and the trolley 4 is provided with a power mechanism for moving along the hanging rail 3. Specifically, the power mechanism can adopt the mode that a motor drives a travelling wheel to rotate, and the travelling wheel is rotationally arranged on the trolley 4 and drives the trolley 4 to move on the hanging rail 3.

[0056] The suspension mechanism comprises a beam frame 9, a mounting cross frame 10 arranged at the bottom of the beam frame 9 and a plurality of first hangers 11 fixedly connected with the mounting cross frame 10. The first hangers 11 are provided with horizontally arranged first hangers 12, and the first hangers 12 are inserted into a group of through holes 30 arranged at the upper part of the rod body 7.

[0057] The lifting driving element 5 is preferably an electric telescopic cylinder, the beam frame 9 is arranged at the output end of the electric telescopic cylinder, and the lifting driving element 5 can also adopt a mechanical sliding table, a scissor lifting mechanism and the like which have the same function of driving the beam frame 9 to lift.

[0058] Guide rails 6 are arranged at the two sides of the frame 1, and the two guide rails 6 are arranged at the two sides of the treatment groove 2. A vibration starting rail 13 is further arranged at the upper side of the guide rail 6, the vibration starting rail 13 is provided with a plurality of uniformly distributed conical protrusions 14, and the tip of the conical protrusion 14 is treated as a circular arc. The vibration starting rail 13 is connected with an avoiding mechanism for driving the vibration starting rail 13 to rotate and shift. According to different surface treatment processes of the connecting rod, the lifting driving element 5 drives the mounting cross frame 10 to contact the guide rail 6 and the vibration starting rail 13 respectively. In some surface treatment processes which do not need vibration, for example, when a protective oil film is sprayed on the surface of the connecting rod, the vibration starting rail 13 is swung to the side of the guide rail 6, and the mounting cross frame 10 is driven by the trolley 4 to move along the guide rail 6, so that the mounting cross frame 10 can move more stably.

[0059] When the connecting rod needs to be vibrated, the mounting cross frame 10 contacts the vibration starting rail 13, for example, when electrolytic polishing treatment is needed or the residual cleaning liquid needs to be shaken off after cleaning, the output end of the lifting driving element 5 is elastically connected with the beam frame 9 through an elastic vibration starting element, and the mounting cross frame 10 contacts the vibration starting rail 13.

[0060] Please refer to Figure 2The avoiding mechanism comprises a mounting base 20 fixedly connected with the frame 1, a rotating frame 21 hingedly mounted on the mounting base 20, and a driving cylinder 22 for providing power for the rotation of the rotating frame 21. One end of the driving cylinder 22 is hingedly connected with the mounting base 20, and the other end of the driving cylinder 22 is hingedly connected with the rotating frame 21. The vibration track 13 is mounted on the top of the rotating frame 21. Further, the driving cylinder 22 can be an electric telescopic cylinder, a hydraulic telescopic cylinder or a pneumatic telescopic cylinder, and the extension and retraction of the driving cylinder 22 can be powered by external municipal power supply, hydraulic system or pneumatic system.

[0061] Specifically, please refer to Figure 6 and Figures 8-9 The elastic vibration part comprises a frame body 15 and elastic connecting members mounted on both sides of the bottom of the frame body 15. The elastic connecting members comprise two connecting rods 16 arranged in an up-down manner, an L-shaped frame 17 and a connecting spring 18. One end of each of the two connecting rods 16 is hingedly connected with the frame body 15, and the other end of each of the two connecting rods 16 is hingedly connected with the L-shaped frame 17. The top of the connecting spring 18 is fixedly connected with the frame body 15, and the bottom of the connecting spring 18 is fixedly connected with the L-shaped frame 17. Further, the output end of the lifting driving member 5 is fixedly connected with the top of the frame body 15. The four hinge points of the two connecting rods 16 at the hinge connection positions of the frame body 15 and the L-shaped frame 17 enclose a parallelogram. The top end of the beam frame 9 is hingedly connected with the L-shaped frame 17, and the mounting cross frame 10 is mounted on the bottom of the beam frame 9.

[0062] In other embodiments, the elastic vibration part can be a spring alone or other equivalent parts having a certain elastic supporting effect.

[0063] The elastic vibration part and the vibration track 13 can make the connecting rod vibrate up and down in the treatment liquid, so that the treatment liquid can more fully contact the tooth-shaped joint surface, and the treatment liquid is more uniform, and the tooth-shaped joint surface and each part of the connecting rod can be more fully surface treated.

[0064] When the connecting rod needs to vibrate during the treatment process, the driving cylinder 22 drives the rotating frame 21 to rotate 90 degrees around the hinge point of the mounting base 20, so that the vibration track 13 above the guide track 6 is moved away, and the mounting cross frame 10 can fall on the guide track 6 to avoid interference caused by the vibration track 13 to the lifting and movement of the beam frame 9.

[0065] The lifting driving member 5 drives the beam frame 9 to move upward to a position above the vibration track 13, the driving cylinder 22 drives the vibration track 13 to return to a horizontal state, the lifting driving member 5 drives the beam frame 9 to move downward until the installation cross frame 10 falls on the vibration track 13, the connecting rod is located above the liquid level of the electrolyte in the processing tank 2, the trolley 4 drives the beam frame 9 to move back and forth on the suspension rail 3, so that the installation cross frame 10 frequently contacts and separates from the conical protrusions 14 on the vibration track 13, and under the action of the elastic connecting member, the beam frame 9 and the connecting rod vibrate up and down, so that the tooth-shaped joint surface and each part of the connecting rod can be more fully surface treated.

[0066] During the upward movement of the beam frame 9, the L-shaped frame 17 also moves up and down synchronously, and the two connecting rods 16 can limit the vertical movement of the L-shaped frame 17 in the vertical direction, and under the action of the connecting spring 18, the vibration effect of the beam frame 9 and the connecting rod can be further improved. During the upward and downward movement of the beam frame 9, the L-shaped frame 17 performs a swing movement around the hinge point, so that the connecting rod vibrates up and down, left and right with the beam frame 9, so as to further improve the surface treatment effect of the connecting rod.

[0067] Embodiment 2 Specifically, please refer to Figures 6-7 and Figure 9 In the embodiment, the suspension mechanism further comprises a second hanger 23 and a pushing member installed on the inner wall of the processing tank 2, and the installation cross frame 10 is provided with two installation rods 19 arranged side by side. The first hanger 11 is fixedly connected with one of the installation rods 19, the second hanger 23 is fixedly connected with the other installation rod 19, the first hanger 11 and the second hanger 23 are arranged correspondingly, the second hanger 23 is provided with a second hanger rod 24 arranged in parallel with the first hanger rod 12 and located below the first hanger rod 12, the second hanger rod 24 is inserted into a through hole 30 at the lower part of the connecting rod, and the outer diameter of the second hanger rod 24 is smaller than the inner diameter of the corresponding through hole 30; the pushing member is used to push the connecting rod on the first hanger rod 12 to the second hanger rod 24.

[0068] When the connecting rod is suspended on the first hanger rod 12, the center axis of the second hanger rod 24 coincides with the center axis of the corresponding through hole 30 of the connecting rod, and the outer diameters of the first hanger rod 12 and the second hanger rod 24 can be 1 / 3-1 / 2 of the inner diameter of the corresponding through hole 30, so that the processing liquid can fully contact the corresponding through hole 30 of the second hanger rod 24, and the smoothness of the movement of the connecting rod on the first hanger rod 12 or the second hanger rod 24 is ensured.

[0069] The first hanger 11, the first hanger rod 12 and the corresponding mounting rod 19 are integrally connected, and the second hanger 23, the second hanger rod 24 and the corresponding mounting rod 19 are integrally connected; the first hanger 11, the second hanger 23, the first hanger rod 12 and the second hanger rod 24 are all made of conductive copper material. The end of the second hanger rod 24 is provided with an upward blocking vertical rod 28, and the length of the blocking vertical rod 28 is smaller than the inner diameter size of the through hole 30. The blocking vertical rod 28 can prevent the connecting rod from being separated from the second hanger rod 24, and when the processed connecting rod is unloaded, it can ensure that the blocking vertical rod 28 is smoothly removed from the corresponding through hole 30.

[0070] Specifically, please refer to Figure 1 , Figure 4 and Figure 6 , the pushing member includes a plurality of liquid distribution pipes 25 installed on the lower part of the inner wall of the treatment tank 2 and a circulating pump 26 installed on the rack 1, the output end of the circulating pump 26 extends into the treatment tank 2, the output end of the circulating pump 26 is in communication with the input end of the plurality of liquid distribution pipes 25, and the output end of each of the plurality of liquid distribution pipes 25 is provided with a right-angle nozzle 27, and the output end of the right-angle nozzle 27 faces the side of the corresponding connecting rod; further, the plurality of right-angle nozzles 27 are arranged corresponding to the connecting rods on the plurality of first hangers 11. The input end of the circulating pump 26 extends into the treatment tank 2 away from the side bottom of the liquid distribution pipe 25.

[0071] In other embodiments, the pushing member can use a pushing plate and a telescopic cylinder, the pushing plate is installed on the output end of the telescopic cylinder, and by starting the telescopic cylinder, the pushing plate pushes the corresponding connecting rod from the first hanger rod 12 to the second hanger rod 24.

[0072] The connecting rod is suspended on the first hanger rod 12 of the first hanger 11 at the beginning, the contact between the first hanger rod 12 and the corresponding through hole 30 on the connecting rod is difficult to contact with the treatment liquid, resulting in incomplete treatment of the corresponding through hole 30, leaving dead angles; when the connecting rod is suspended on the first hanger rod 12 of the first hanger 11 for a period of surface treatment, only the tooth-shaped joint surface of the rod body 7 and the rod cover 8 and the corresponding through hole 30 can be immersed in the treatment liquid, after the treatment is completed, the trolley 4 moves along the hanger rail 3, so that the connecting rod moves to the corresponding right-angle nozzle 27, the circulating pump 26 is started to pressurize the treatment liquid and then sprays it through the right-angle nozzle 27, the sprayed pressurized treatment liquid acts on the corresponding connecting rod and forms a thrust along the axis direction of the first hanger rod 12, under the action of the thrust, the connecting rod moves along the central axis direction of the first hanger rod 12 until it is separated from the first hanger rod 12, at this time the second hanger rod 24 is always inserted into one through hole 30 at the bottom of the connecting rod, under the action of gravity, the connecting rod rotates 180 degrees from the state shown in Figure 6 so as to naturally fall, so that the treatment liquid enters the upper through hole 30 of the original connecting rod, ensuring that the treatment liquid fully contacts the inner walls of the two through holes 30 and avoiding dead angles.

[0073] The circulating pump 26 can pressurize the treatment liquid at the bottom of one side of the treatment tank 2, and then spray it out through the liquid distribution pipe 25 and the straight jet nozzle 27 at the other side of the treatment tank 2, so that the treatment liquid in the treatment tank 2 is in a circulating flow state, thereby improving the mixing uniformity of the treatment liquid and further ensuring the uniformity of the concentration and temperature of the treatment liquid in the treatment tank 2.

[0074] When the pushing and pulling member adopts a cylinder or a screw rod structure, it can be fixedly arranged on the suspension mechanism or arranged on the inner wall of the treatment tank 2.

[0075] On the basis of combining the above-mentioned embodiments 1 and 2, the present embodiment further provides a device for deburring the tooth-shaped joint surface of a connecting rod of a diesel engine, which comprises the conveying device for surface treatment of the connecting rod of the diesel engine, the positive electrode of the starting track 13 is connected with an external power supply, the treatment tank 2 is connected with the negative electrode of the external power supply, the rod body 7 of the connecting rod is connected with the rod cover 8 through the bolt 31, the upper part of the rod body 7 is provided with an integral through hole 30, the through hole 30 is formed between the rod body 7 and the rod cover 8, and in order to enable the electrolyte to contact the tooth-shaped joint surface, the rod body 7 and the rod cover 8 are not completely connected, but the tooth-shaped joint surfaces on the rod body 7 and the rod cover 8 are arranged at a distance of at least 2 cm, so as to ensure that the electrolyte can completely electrolytically polish the tooth-shaped joint surface.

[0076] The elastic starting member in the device for deburring the tooth-shaped joint surface of the connecting rod of the diesel engine can be a spring alone, or other equivalent members with certain elastic supporting effect, or the elastic connecting members at the bottom of both sides of the frame 15, which comprise the structure of two upper and lower connecting rods 16, L-shaped frames 17 and connecting springs 18.

[0077] Similarly, the suspension mechanism can adopt an existing conventional suspension structure, or the structure of the beam frame 9, the first suspension assembly and the second suspension assembly. The pushing and pulling member between the first suspension assembly and the second suspension assembly can adopt a cylinder or a screw rod structure, or the structure of the liquid distribution pipe 25 and the circulating pump 26.

[0078] Electrolytic polishing uses the workpiece as the anode and the electrolyte connected to the cathode. Direct current is applied to selectively dissolve the anolyte, removing burrs and increasing surface gloss. Previously, connecting rod polishing was done using polishing tools, such as the engine connecting rod deburring device and method disclosed in CN119501732A. In this method, toothed blades are positioned corresponding to the connecting rod's tooth surfaces, and both ceramic fiber brushes and silicon carbide abrasive brushes are connected to rotating drive components. These brushes are mounted on a robot's movable arm, allowing automatic tooth surface polishing after the connecting rod is fixed in place, replacing manual deburring. However, the irregular surface of the connecting rod, especially the integrally formed through hole 30 and the toothed mating surface, makes mechanical polishing tools inconvenient, resulting in unsatisfactory physical polishing effects. Electrolytic polishing, on the other hand, can significantly improve the polishing effect and efficiency of connecting rods.

[0079] The mounting frame 10, first hanger 11, second hanger 23, first hanger 12, and second hanger 24 are all made of conductive copper. An electric heater 29 is installed at the bottom of the processing tank 2. The electric heater 29 can heat the processing liquid in the processing tank 2 to increase the temperature of the processing liquid. The increased temperature can increase the electrochemical reaction rate, reduce the viscosity of the processing liquid, improve the fluidity of the processing liquid, make it easier to form a uniform liquid film on the surface of the connecting rod, reduce bubbles, accelerate the diffusion of reactants from the surface of the connecting rod into the solution, and improve the conductivity of the processing liquid, thereby improving the efficiency and effect of electrolytic polishing of the connecting rod.

[0080] The upper end of bolt 31 is threaded to connect to rod body 7. The lower diameter of bolt 31 is smaller than the diameter of the connecting hole on rod cover 8, so that electrolyte can enter the connecting hole of rod cover 8 to further remove burrs in the connecting hole.

[0081] See Figure 10 A clamping mechanism for holding the connecting rod is provided on the first hanger 11. The clamping mechanism ensures that the connecting rod reliably contacts the first hanger 11, preventing intermittent power supply caused by poor contact between the connecting rod and the first hanger 11 during vibration, and ensuring continuous electrolytic polishing. Specifically, the clamping mechanism includes a clamping rod 32, a clamping spring 34, and a clamping release drive. The clamping rod 32 is rotatably mounted on the first hanger 11, and the clamping spring 34 is located between the first hanger 11 and the clamping rod 32. The clamping spring 34 presses one end of the clamping rod 32 against the connecting rod on the first hanger 12. One end of the clamping release drive is connected to the mounting crossbar 10, and the other end corresponds to the other end of the clamping rod 32.

[0082] One end of the clamping rod 32 is provided with an arc-shaped clamping piece 33 for clamping the connecting rod, so as to make full contact with the upper end of the connecting rod and clamp it firmly and reliably.

[0083] The clamping and separating driving member is a clamping and separating cylinder 35, one end of the clamping and separating cylinder 35 is fixedly connected to the mounting crossbeam 10, and the other end is arranged on the upper side of the other end of the clamping rod. After the clamping and separating cylinder 35 is actuated, the piston rod of the cylinder pushes the clamping rod 32 to swing, so that the clamping rod 32 is separated from the connecting rod.

[0084] Before clamping the connecting rod, the clamping and separating cylinder 35 is actuated to drive the clamping rod 32 to swing against the resistance of the clamping spring 34, the arc-shaped clamping piece 33 is separated from the first suspender 12, the through hole 30 at the upper end of the connecting rod is sleeved on the first suspender 12, and then the clamping and separating cylinder 35 is retracted, the clamping rod 32 swings under the action of the clamping spring 34, and the arc-shaped clamping piece 33 clamps the connecting rod on the first suspender 12.

[0085] In other embodiments, the clamping mechanism includes a clamping rod 32 and a clamping and separating driving member, the clamping rod 32 is rotationally arranged on the first hanger 11, one end of the clamping and separating driving member is rotationally connected to the mounting crossbeam 10, and the other end is rotationally connected to the clamping rod 32, and the clamping and separating driving member is directly used to drive the clamping rod 32 to swing.

[0086] The embodiment also provides a process for deburring a tooth-shaped joint surface of a connecting rod of a diesel engine, and the process comprises the following steps: 1) The through hole 30 at the upper part of the connecting rod is suspended on the first suspender 12, the rod body of the connecting rod is connected to the rod cover 8 through the bolt 31, the tooth-shaped joint surface on the rod body 7 is spaced apart from the tooth-shaped joint surface on the rod cover 8, the through hole 30 at the lower part of the connecting rod is sleeved outside the second suspender 24, and the through hole 30 is spaced apart from the second suspender 24.

[0087] 2) The lifting driving member 5 drives the beam frame 9 to move downward until the mounting crossbeam 10 falls on the vibration track 13, the tooth-shaped joint surface on the rod body 7 and the rod cover 8 of the connecting rod is immersed in the electrolyte in the treatment tank 2, and the electrolytic polishing treatment is performed on the tooth-shaped joint surface and the inner wall of the through hole 30 at the lower part of the connecting rod.

[0088] 3) After the electrolytic polishing of the tooth-shaped joint surface and the inner wall of the through hole 30 at the lower part of the connecting rod is completed, the pushing member pushes the connecting rod on the first suspender 12 to the second suspender 24, so that the connecting rod is separated from the first suspender 12, the connecting rod is only suspended on the second suspender 24, and the inner wall of the other through hole 30 of the connecting rod is immersed in the electrolyte in the treatment tank 2, so that the electrolytic polishing treatment is performed on the inner wall of the other through hole 30 of the connecting rod.

[0089] When the clamping mechanism is arranged on the suspending mechanism, the clamping mechanism needs to be separated from the connecting rod first, and then the pushing member can be used to push the connecting rod on the first suspender 12 to the second suspender 24.

[0090] Preferably, the trolley 4 reciprocates on the hanging rail 3 in step 2), the mounting cross 10 and the vibrating rail 13 are always in contact, and the connecting rod reciprocates in the processing tank 2 while vibrating up and down. The trolley 4 reciprocates from the hanging rail 3, further agitates the electrolyte, the electrolyte is more uniform, and each part of the connecting rod immersed in the electrolyte experiences similar current density and time, thereby obtaining more uniform dissolution rate and surface finish.

[0091] In other embodiments, steps 2) and 3) can also completely immerse the entire connecting rod in the electrolyte of the processing tank 2.

[0092] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A conveying device for surface treatment of connecting rods in diesel engines, used for conveying connecting rods, the connecting rods comprising a rod body (7) and through holes (30) at both ends of the rod body (7); characterized in that, The conveying device includes a hanging rail (3), a frame (1), a trolley (4) and a suspension mechanism. The hanging rail (3) is set above the frame (1). The frame (1) has a processing groove (2) on its upper side. The trolley (4) is slidably installed on the hanging rail (3). The suspension mechanism is connected to the trolley (4) through a lifting drive component (5). The lifting drive component (5) is used to drive the suspension mechanism to move up and down. It also includes an elastic vibration starter and a vibration starter track (13) installed on both sides of the frame (1). The output end of the lifting drive (5) is elastically connected to the suspension mechanism through the elastic vibration starter. The vibration starter track (13) is provided with multiple evenly distributed conical protrusions (14).

2. The conveying device for surface treatment of diesel engine connecting rods according to claim 1, characterized in that, The elastic vibration starter includes a frame (15) and elastic connectors installed on both sides of the bottom of the frame (15). The elastic connectors include two vertically arranged connecting rods (16), an L-shaped frame (17), and a connecting spring (18). One end of each connecting rod (16) is hinged to the frame (15), and the other end of each connecting rod (16) is hinged to the L-shaped frame (17). The top of the connecting spring (18) is fixedly connected to the frame (15), and the bottom of the connecting spring (18) is fixedly connected to the L-shaped frame (17).

3. The conveying device for surface treatment of diesel engine connecting rods according to claim 1, characterized in that, Guide rails (6) are also installed on both sides of the frame (1). The vibration starter rail (13) is located above the guide rails (6). The vibration starter rail (13) is connected to a clearance mechanism for rotating and shifting the vibration starter rail (13).

4. The conveying device for surface treatment of diesel engine connecting rods according to claim 3, characterized in that, The avoidance mechanism includes a mounting base (20) fixedly connected to the frame (1), a rotating frame (21) hingedly mounted on the mounting base (20), and a drive cylinder (22) that provides power for the rotation of the rotating frame (21). One end of the drive cylinder (22) is hinged to the mounting base (20), and the other end of the drive cylinder (22) is hinged to the rotating frame (21). The vibration track (13) is mounted on the top of the rotating frame (21).

5. The conveying device for surface treatment of diesel engine connecting rods according to claim 1, characterized in that, The suspension mechanism includes a beam frame (9), a first suspension assembly and a second suspension assembly. The beam frame (9) is connected to an elastic vibration starter. The first suspension assembly and the second suspension assembly are located on the lower side of the beam frame (9). The first suspension assembly and the second suspension assembly pass through two through holes (30) of the connecting rod, respectively. A pusher is also provided in the processing groove (2), which is used to push the connecting rod on the first suspension assembly to the second suspension assembly.

6. The conveying device for surface treatment of diesel engine connecting rods according to claim 5, characterized in that, The first suspension assembly includes a first hanger (11), on which a first hanger rod (12) is provided horizontally, and the first hanger rod (12) is inserted into a set of through holes (30) at the upper part of the rod body (7); The second suspension assembly includes a second hanger (23), on which a second hanger (24) is provided, which is arranged parallel to the first hanger (12) and located below the first hanger (12). The second hanger (24) is inserted into a through hole (30) at the lower part of the connecting rod, and the outer diameter of the second hanger (24) is smaller than the inner diameter of the corresponding through hole (30).

7. The conveying device for diesel engine connecting rod surface treatment according to claim 6, characterized in that, The top center of the beam frame (9) is hinged to the elastic vibration starter. The bottom of the beam frame (9) is provided with a mounting crossbeam (10). The mounting crossbeam (10) is provided with two mounting rods (19) arranged side by side. The first hanger (11) is fixedly connected to one of the mounting rods (19), and the second hanger (23) is fixedly connected to the other mounting rod (19).

8. The conveying device for surface treatment of diesel engine connecting rods according to claim 5, characterized in that, The pusher includes multiple liquid distribution pipes (25) installed on the lower part of the inner wall of one side of the treatment tank (2) and a circulation pump (26) installed on the frame (1). The output end of the circulation pump (26) extends into the treatment tank (2). The output end of the circulation pump (26) is connected to the input end of the multiple liquid distribution pipes (25). The output end of the multiple liquid distribution pipes (25) is equipped with a right-angle nozzle (27). The output end of the right-angle nozzle (27) faces the corresponding connecting rod side.

9. The conveying device for surface treatment of diesel engine connecting rods according to claim 8, characterized in that, The input end of the circulating pump (26) extends into the bottom of the treatment tank (2) on the side away from the liquid distribution pipe (25).

10. The conveying device for surface treatment of diesel engine connecting rods according to claim 6, characterized in that, The end of the second rod (24) is provided with an upward-facing blocking rod (28), the length of which is less than the inner diameter of the through hole (30).

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