Hydraulic motor assembly process and assembly production line

Abstract

This application relates to a hydraulic motor assembly process and assembly production line, specifically to the field of hydraulic motor production technology. The hydraulic motor assembly process includes the following steps: providing parts, cleaning and sorting parts, assembling the hydraulic motor body, preparing for assembly of the hydraulic motor's internal parts, assembling the crankshaft assembly, assembling the piston assembly, assembling the hydraulic motor, assembling the oil pan, and performing performance testing. This application standardizes the hydraulic motor production and assembly process, improving assembly efficiency and molding quality.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic motor production, and in particular to a hydraulic motor assembly process and assembly production line. Background Art

[0002] Hydraulic motors are mainly used in injection molding machinery, ships, hoists, engineering machinery, construction machinery and other fields. They have the advantages of impact resistance and low inertia.

[0003] In related technologies, after the production of related parts of the hydraulic motor is completed, the same parts will be placed together. During assembly, the staff will take the corresponding parts from the corresponding parts pile. After a series of processes such as cleaning, assembly, and testing of the parts, they will be combined into a complete hydraulic motor.

[0004] With regard to the above-mentioned related technologies, the inventors found that since the assembly of hydraulic motors involves the combination of many small links, the number of parts is large, and there are many steps, the workload of selecting, cleaning, assembling and testing parts by the same staff is large. After working for a long time, the staff will inevitably miss a link or make errors in the assembly sequence during the assembly process, making it difficult to ensure the assembly efficiency and molding quality of the hydraulic motor, so it needs to be improved. Summary of the Invention

[0005] In order to standardize the production process of hydraulic motors and improve the assembly efficiency and molding quality of hydraulic motors, the present application provides a hydraulic motor assembly process and assembly production line.

[0006] The present application provides a hydraulic motor assembly process and assembly production line that adopts the following technical solutions:

[0007] A hydraulic motor assembly process includes the following steps:

[0008] Parts provided: including housing, cover, bearing, crankshaft, copper gasket, roller, bearing sleeve, baffle, piston, connecting rod for piston, retaining ring, retaining ring for hole, oil seal, O-ring, plunger sleeve, piston ring, piston connecting rod, plunger sleeve, connecting rod ring, double-ended key, locating ring, oil distribution plate, oil pan, cylindrical pin, spacer, plug, plug, sleeve and several screws. Check the chamfer and fillet of parts;

[0009] Parts cleaning: transporting parts to the assembly line for cleaning. The assembly line includes a drilling machine and a cleaning machine. The drilling machine is used to remove residual casting sand inside the parts, and the cleaning machine is used to clean and dry the parts.

[0010] Parts classification: The parts required for assembling a hydraulic motor are placed on a carrier plate. The assembly line also includes a conveying mechanism, and the carrier plate is placed on the conveying mechanism for transportation;

[0011] Hydraulic motor main body assembly: When the bearing plate reaches the hydraulic motor main body assembly point, the conveying mechanism stops running, and the housing and cover are installed into the outer ring of the bearing. The two ends of the crankshaft are installed into the inner ring of the bearing and fixed with screws. The axial clearance is measured with a feeler gauge, and copper gaskets of corresponding specifications are installed according to the measured axial clearance;

[0012] Preparation process for assembling internal parts of the hydraulic motor: remove the cover, take out the crankshaft and place it on the corresponding carrier plate, start the conveying mechanism, and continue to transport the carrier plate;

[0013] Crankshaft assembly: When the carrier plate reaches the crankshaft assembly point, the conveying mechanism stops running, the rollers and bearing sleeves are installed on the crankshaft, the baffle is glued to the crankshaft, and the baffle is fixed to the crankshaft wall with screws so that the baffle and the crankshaft end are in the same plane. After the assembly is completed, the conveying mechanism starts and the carrier plate continues to be transported;

[0014] Piston assembly assembly: When the carrier plate reaches the piston assembly assembly point, the conveying mechanism stops running, and the piston connecting rod, retaining ring, and hole retaining ring are installed in the piston, so that the ball head can rotate flexibly without any gap, and the piston connecting rod and hole retaining ring do not contact. After the assembly is completed, the conveying mechanism starts and the carrier plate continues to transport;

[0015] Hydraulic motor assembly: When the carrier plate reaches the hydraulic motor assembly point, the conveying mechanism stops running, the oil seal is placed inside the sealing cover, and the O-ring is installed. The O-ring and piston ring are installed in the plunger sleeve. The assembled plunger sleeve and piston assembly are installed on the housing and fixed with screws. The connecting rod ring is assembled and connected to the housing. The crankshaft assembly is installed in the connecting rod ring. The sealing cover is closed and all screws are tightened. The double-headed key and locating ring are installed in the housing. The O-ring and sealing ring are installed on the oil distribution plate. The assembled oil distribution plate is assembled to the housing.

[0016] Oil pan assembly: clean the oil pan, assemble the O-ring and sealing ring to the oil pan, assemble the oil pan to the housing, and secure it with screws; install plugs and rosettes according to the number of oil drain ports in the housing, check for axial movement, ensure the crankshaft can rotate flexibly, and put the sleeve on the crankshaft output end to complete the assembly of the hydraulic motor;

[0017] Performance test: The assembled hydraulic motor is delivered to the experimenter for performance testing.

[0018] By adopting the above technical solution, before assembling the hydraulic motor, the parts needed are deburred and cleaned, which can effectively improve the assembly accuracy of the hydraulic motor, reduce the wear of defects on other parts, save assembly process time, and increase the success rate of one-time assembly; classify the parts, and place the various accessories required for installing a hydraulic motor on the same carrier plate, thereby ensuring the accuracy of the hydraulic motor assembly, reducing the probability of wrong installation, missing installation and other problems, and improving assembly efficiency; divide the assembly of the hydraulic motor into multiple processes, and distribute the assembly along the transportation direction of the conveying mechanism, so that the staff at each assembly point can complete their corresponding assembly tasks, further reduce the probability of assembly errors, improve production capacity, and have high practicality and convenience.

[0019] Preferably, during the assembly of the hydraulic motor, 515 sealing glue is applied at the junction of the plunger sleeve and the housing.

[0020] By adopting the above technical solution, 515 sealing glue is provided at the junction of the plunger sleeve and the housing, which can effectively improve the tightness of the connection between the plunger sleeve and the housing. At the same time, 515 sealing glue is an industrial glue with many advantages such as strong flexibility, excellent fluid resistance, and non-corrosiveness. It can solidify to form a flexible gasket, causes less damage to the plunger sleeve and the housing, and can effectively protect the structural safety of the hydraulic motor.

[0021] Preferably, when applying 515 the sealing glue, the O-ring and the O-groove of the high-pressure cavity for installing the O-ring are avoided.

[0022] By adopting the above technical solution, the O-ring is avoided when applying the 515 sealing glue, which can effectively reduce the probability of aging and deformation of the O-ring, thereby enabling the O-ring to maintain a higher sealing performance.

[0023] Preferably, in the provided parts, there are no cracks on the surface of the screws, and the strength of the screws is grade 12.9.

[0024] By adopting the above technical solution, the 12.9-grade strength screws have high hardness and tensile strength, which can meet the high requirements for fasteners in hydraulic motors and improve the safety of hydraulic motors during use.

[0025] Preferably, during the assembly of the hydraulic motor body, the crankshaft assembly, the hydraulic motor and the oil pan, corresponding marks are marked after the screws are tightened.

[0026] By adopting the above technical solution, the marking is applied in time after the corresponding steps are completed, thereby reducing the problem of screw leakage, which leads to unstable coordination of various components of the hydraulic motor and potential safety hazards.

[0027] Preferably, during the assembly of the oil pan, the oil pan adopts the D40, D47, or D90 model, and the double-headed key and the locating ring are installed into the housing while the cylindrical pin and the spacer are assembled.

[0028] By adopting the above technical solution, according to different production standards, there will be multiple options for installing the oil pan, such as D40, D47, and D90. When installing these types of oil pans, installing cylindrical pins and spacers can effectively ensure the installation stability of the D40, D47, and D90 oil pans, allowing the hydraulic motor to maintain a safe and stable working state.

[0029] A hydraulic motor assembly production line, comprising:

[0030] Drilling machine to clean the remaining casting sand inside the parts;

[0031] a cleaning machine, connected to the drilling machine, for cleaning and drying the cleaned parts;

[0032] Several carrier plates for placing parts required to assemble a hydraulic motor;

[0033] a conveying mechanism, in communication with the cleaning machine, for conveying the plurality of the carrying plates in the direction of the assembly points of the components of the hydraulic motor;

[0034] The automatic stacking device is connected to the conveying mechanism and is used for automatically stacking the idle carrying plates.

[0035] By adopting the above technical solution, before the parts are assembled, the casting sand remaining inside the parts during molding is removed on the drilling machine using equipment such as a grinding wheel and a drill rig, so that the various parts can adapt to each other during assembly, improving the problem of internal casting sand abrading the surfaces of other parts during assembly and causing damage to the parts, thereby improving the accuracy, efficiency and safety of assembly; the stains on the surface of the parts and the sand removed by the drilling machine can be washed away by a cleaning machine, so that the parts can be kept neat and easy to assemble; the parts assembled into a complete hydraulic motor are placed on the same carrier plate, and the number of parts can be counted in the preparation stage of assembly, effectively reducing the probability of missing parts during assembly, improving the success rate of one-time assembly, and reducing labor intensity; the carrier plate can be transported along the conveying mechanism, and the assembly of the hydraulic motor can be carried out in steps, making the entire assembly process more orderly and improving assembly convenience and accuracy; the assembled carrier plates are stacked in an orderly manner, improving the problem of disorderly stacking of the carrier plates, which affects the operation of the conveying mechanism and the assembly efficiency of the hydraulic motor; the hydraulic motor assembly production line of the present application effectively improves the assembly accuracy and efficiency of the hydraulic motor.

[0036] The lifting mechanism is a lifting mechanism that is installed in the lifting mechanism, and the lifting mechanism is installed in the lifting mechanism, and the lifting mechanism is installed in the lifting mechanism.

[0037] By adopting the above technical solution, when the carrying plate is transported to the conveying platform along the conveying mechanism, the first lifting device drives the first conveying frame and the first conveying chain to rise, so that the first conveying chain can be against the bottom wall of the carrying plate. When the first conveying chain lifts the carrying plate and separates from the conveying mechanism, the carrying plate can move along the length direction of the first conveying chain until the carrying plate is transported to the top of the rotating table; when the carrying plate is above the rotating table, the first lifting device drives the first conveying frame and the first conveying chain to descend, so that the carrying plate is against the rotating table, and the carrying plate is driven to rotate by the rotating table, so that the longer side edge of the carrying plate can be against the limit plate, completing the After the angle is corrected before stacking, the first lifting device is started again, and the first conveyor chain drives the load-bearing plate to move toward the load-bearing platform; at the same time, the second lifting device pushes the stack of load-bearing plates in the direction away from the ground, so that the load-bearing plate at the bottom can be separated from the second conveyor chain. At this time, the support member is driven by the driving member to be inserted into the support groove of the bottom load-bearing plate, replacing the second lifting device to lift the load-bearing plate. After the second lifting device is reset, the gap between the second conveyor chain and the bottom load-bearing plate can enable the load-bearing plate to be transferred to the load-bearing platform to be inserted, thereby automating the stacking of the load-bearing plates, which is highly convenient and practical.

[0038] Preferably, a stopper is provided on the surface of the conveying platform, and the stopper is located between the conveying platform and the limiting plate.

[0039] By adopting the above-mentioned technical solution, setting a block can effectively limit the transportation distance between the adjustment angles of the load-bearing plate on the first conveyor chain. Due to the obstruction of the block, when the length direction of the load-bearing plate is perpendicular to its transportation direction, the load-bearing plate will not be able to pass through the block, and will be limited by the block until the rotating table adjusts the load-bearing plate so that its length direction is parallel to the transportation direction. The load-bearing plate can then smoothly break away from the block, thereby improving the accuracy of the load-bearing plate adjustment of this application.

[0040] Preferably, a transport platform is provided at one end of the load-bearing platform away from the conveying platform, a third conveying frame is provided in the conveying platform, a third conveying chain for transporting the load-bearing plate is rotatably connected to the third conveying frame, the length direction of the third conveying chain is perpendicular to the length direction of the first conveying chain, the conveying mechanism and the transport platform are connected through the third conveying chain, and a third lifting device for driving the third conveying frame to rise and fall is provided in the conveying platform.

[0041] By adopting the above-mentioned technical solution, a conveying platform, a third conveying frame and a third conveying chain are set up, which can effectively lower the load-bearing platform and connect it with the conveying mechanism, so that the load-bearing plate placed on the surface of the conveying platform can be transported to the conveying mechanism, thereby realizing a closed-loop transportation structure of the entire production line, improving the conveying efficiency of the load-bearing plate, and having high convenience and practicality.

[0042] In summary, this application includes at least one of the following beneficial technical effects:

[0043] 1. This application places all the components required for assembling a hydraulic motor on the same carrier plate, thereby ensuring the accuracy of the parts required for hydraulic motor assembly, reducing the probability of incorrect assembly, missing assembly, and other problems, and improving assembly efficiency. The assembly of the hydraulic motor is divided into multiple processes and distributed along the transportation direction of the conveyor mechanism, allowing workers at each assembly point to complete their corresponding assembly tasks, further reducing the probability of assembly errors, improving production capacity, and having high practicality and convenience.

[0044] 2. The production line of the present application is equipped with a conveying mechanism, an automatic stacking device and a conveying platform, so that the carrier plates can be transported in a closed loop, thereby saving the time and energy of manual handling of the carrier plates, making the entire production line more automated and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a flow chart of the hydraulic motor assembly process according to an embodiment of the present application.

[0046] Figure 2 It is a structural schematic diagram of the assembly production line of Example 1 of the present application.

[0047] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle.

[0048] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle.

[0049] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle.

[0050] Figure 6 It is a structural schematic diagram of the assembly production line of Example 2 of the present application.

[0051] Figure 7 It is a structural schematic diagram of the plate transport component and the pushing component of Example 2 of the present application.

[0052] Figure 8 It is a structural schematic diagram of the sliding plate of Example 2 of the present application.

[0053] Explanation of the accompanying drawings: 1. drilling machine; 2. cleaning machine; 3. carrying plate; 31. supporting groove; 4. conveying mechanism; 5. automatic stacking device; 51. conveying platform; 511. first conveying frame; 512. first conveying chain; 513. first lifting device; 514. rotating platform; 515. limiting plate; 516. block; 52. carrying platform; 521. second conveying frame; 522. second conveying chain; 523. supporting plate; 524. driving member; 525. second lifting device; 6. conveying platform; 61. third conveying frame; 62. third conveying chain; 63. third lifting device; 7. plate transport assembly; 71. column; 72. sliding plate; 721. sliding groove; 73. moving member; 74. lifting member; 75. clamping member; 8. pushing assembly; 81. supporting rod; 82. rotating disk; 83. power member; 84. pushing rod; 85. pushing plate; 86. limiting column. DETAILED DESCRIPTION

[0054] The following is combined with Figure 1-8 This application is described in further detail.

[0055] This application discloses a hydraulic motor assembly process, referring to Figure 1 and Figure 2 , including the following steps:

[0056] S1: Provide parts, including housing, cover, bearing, crankshaft, copper gasket, roller, bearing sleeve, baffle, piston, piston connecting rod, retaining ring, hole retaining ring, oil seal, O-ring, plunger sleeve, piston ring, piston connecting rod, plunger sleeve, connecting rod ring, double-ended key, locating ring, oil distribution plate, oil pan, cylindrical pin, spacer, plug, plug, sleeve and several screws. Among them, the screws required for hydraulic motor assembly must ensure strength of 12.9 and no cracks on the surface. During the parts supply process, all parts need to be deburred, and the specifications of the corresponding parts and whether the openings of each part are chamfered and rounded are checked to complete the preparation process;

[0057] S2: Parts cleaning: The parts are transported to the assembly line for cleaning. The assembly line includes a drilling machine 1 and a cleaning machine 2. The drilling machine 1 is equipped with a grinding wheel and cutting device according to the size of the hydraulic motor to be assembled and the specifications of the parts to be assembled, so as to remove the residual casting sand inside the parts. The cleaning machine 2 is located at the exit of the drilling machine 1. The parts are cleaned inside when passing through the cleaning machine 2 and are dried at the exit of the cleaning machine 2. A dedicated person is assigned to check the cleanliness of each part, and only qualified parts are put into assembly.

[0058] S3: Parts classification. The assembly line also includes several carrier plates 3 and conveying mechanisms 4. All parts required for assembling a hydraulic motor are placed on a carrier plate 3, and the carrier plate 3 is placed on the conveying mechanism 4 for transportation. The hydraulic motor is assembled step by step.

[0059] S4: Assembling the main body of the hydraulic motor. The carrier plate 3 moves along the conveying mechanism 4 to the point where the main body of the hydraulic motor is assembled and then stops transporting. The staff assembles the corresponding parts on the carrier plate 3, installs the housing and cover into the outer ring of the bearing, and installs the two ends of the crankshaft into the inner ring of the bearing. They are fixed with screws. The axial clearance is measured with a feeler gauge. According to the measured axial clearance, copper gaskets of corresponding specifications are installed. After the screws are fixed, they are marked with corresponding marks to prevent them from being screwed in.

[0060] S5: Preparation process for assembling the internal parts of the hydraulic motor. After the main body of the hydraulic motor is assembled and the dimensions are tested and confirmed to be correct, the cover is removed, the crankshaft is taken out and placed on the corresponding carrier plate 3. The conveying mechanism 4 continues to operate to transport the carrier plate 3 to the next assembly point.

[0061] S6: Crankshaft assembly, the carrier plate 3 arrives at the crankshaft assembly point, the conveying mechanism 4 stops running, the roller and bearing sleeve are installed on the crankshaft, the baffle is glued to the crankshaft, and the baffle is fixed to the crankshaft wall with screws so that the baffle and the crankshaft end are in the same plane. After the screws are fixed, the corresponding marks are marked to avoid missing screws. The assembly is completed. Among them, 515 sealing glue is used to improve the connection stability between the baffle and the crankshaft. After the assembly is completed, the conveying mechanism 4 is restarted, and the carrier plate 3 is continued to be transported along the conveying mechanism 4 to the next assembly point;

[0062] S7: Assemble the piston assembly. After the carrier plate 3 reaches the piston assembly point, the conveying mechanism 4 stops running and installs the piston connecting rod, retaining ring, and hole retaining ring into the piston so that the ball head can rotate flexibly without any gap and the piston connecting rod does not contact the hole retaining ring. After the assembly is completed, the conveying mechanism 4 starts again to transport the carrier plate 3 to the next assembly point.

[0063] S8: Hydraulic motor assembly. After the carrier plate 3 reaches the hydraulic motor assembly point, the conveying mechanism 4 stops running. The oil seal is placed inside the cover by special tools, and the O-ring is installed. The O-ring and piston ring are installed in the plunger sleeve. During the installation process, burrs and dirt must be checked. At the same time, check whether the piston ring is installed correctly. The assembled plunger sleeve and piston assembly are installed on the housing and fixed with screws. After the screws are fixed, the corresponding marks are marked to avoid missing screws. The plunger sleeve and the housing are coated with 515 sealing agent. When applying 515 sealing glue, avoid the O-ring and the O-groove in the high-pressure chamber where the O-ring is installed to prevent aging and deformation of the O-ring, which may affect the seal. Assemble the connecting rod ring, which is made up of five connecting rods and a retaining ring. After the splicing is completed, adjust the size of the circle formed, connect the connecting rod ring to the housing, install the crankshaft assembly into the connecting rod ring, close the cover and tighten all screws. Install the double-headed key and locating ring into the housing, assemble the O-ring and sealing ring on the oil distribution plate, and assemble the assembled oil distribution plate to the housing.

[0064] S9: After completing the above assembly, the corresponding assembler's work number must be marked;

[0065] S10: Assemble the oil pan. Check for sand and dirt in the oil pan channel and clean the oil pan. Install the O-ring and sealing ring to the oil pan. Install the oil pan to the housing and secure with screws. Mark the screws after tightening to prevent them from being screwed in. When the oil pan is D40, D47, or D90, install the double-headed key and locating ring into the housing, and also install the cylindrical pin and spacer to ensure the installation stability of the oil pan.

[0066] Install plugs and rosettes according to the number of oil drain ports on the housing. If there are two oil ports, install a plug and a rosette for each. If there is only one oil drain port, only the rosette needs to be covered. Check the axial play to ensure that the crankshaft can rotate flexibly. Put a sleeve on the crankshaft output end to complete the assembly of the hydraulic motor.

[0067] S11: Performance test: the assembled hydraulic motor is delivered to the experimenter for a series of performance tests such as sealing and stability. If the test results are qualified, the corresponding hydraulic motor can be shipped out of the factory. If the test results are unqualified, it needs to be disassembled and reassembled.

[0068] Example 1:

[0069] Example 1 of the present application discloses a hydraulic motor assembly production line to implement the above process. Figure 2 and Figure 3 , the assembly line includes:

[0070] Drilling machine 1 is used to clean the casting sand remaining inside the parts. The drilling machine 1 is equipped with a grinding wheel or other cutting and grinding tools of appropriate specifications according to the size of the hydraulic motor to be assembled and the size of the parts;

[0071] The cleaning machine 2 is connected to the drilling machine 1 and is used to clean and dry the cleaned parts. In this embodiment, a spray pool is provided inside the cleaning machine 2. The spray liquid inside the spray pool will be sprayed onto the surface of the parts through the spray pipe to flush the oil on the surface of the parts and the sand inside. The splashed mist will be recovered by the internal exhaust pipe and discharged back into the spray pool. An air outlet is provided at the outlet of the end of the cleaning machine 2 away from the drilling machine 1 to dry the parts.

[0072] Several supporting plates 3 are used to place the parts required for assembling a hydraulic motor. The surface of the supporting plates 3 is provided with crisscross patterns to improve the stability of the parts when placed on the supporting plates 3. The bottom wall of the supporting plates 3 is provided with two mutually parallel supporting grooves 31. The length direction of the supporting grooves 31 is consistent with the width direction of the supporting plates 3.

[0073] The conveying mechanism 4 is connected to the outlet of the cleaning machine 2 and is used to convey the carrying plates 3. The conveying mechanism 4 is arranged in a ring shape, and corresponding assembly points are set along the way. In this embodiment, the conveying mechanism 4 includes a frame and rollers arranged along the length of the frame to achieve efficient transportation of the carrying plates 3, so as to be used to convey the plurality of the carrying plates 3 along the assembly points of the various components of the hydraulic motor;

[0074] The automatic stacking device 5 is connected to the end of the conveying mechanism 4. The automatic stacking device 5 and the conveying mechanism 4 are connected to each other to form a closed loop structure, which stacks the idle carrier plates 3 and improves the neatness of the production line.

[0075] Reference Figure 2 The automatic stacking device 5 includes a conveying platform 51 and a supporting platform 52 that are connected to each other. The conveying platform 51 is connected to the conveying mechanism 4, and the supporting platform 52 is arranged on a side of the conveying platform 51 away from the supporting platform 52.

[0076] Reference Figure 2 and Figure 4 Two first conveying frames 511 parallel to each other are provided in the conveying platform 51. The length direction of the first conveying frame 511 is consistent with the length direction of the conveying platform 51. The first conveying frame 511 is rotatably connected to the first conveying chain 512 for transporting the carrying plate 3. A first lifting device 513 for driving the first conveying frame 511 to rise and fall is provided in the conveying platform 51. In this embodiment, the first lifting device 513 is a cylinder. When the carrying plate 3 moves to the end of the conveying mechanism 4, the first lifting device 513 is started, driving the first conveying frame 511 and the first conveying chain 512 to rise, so that the first conveying chain 512 can be against the bottom wall of the carrying plate 3, and the carrying plate 3 is separated from the conveying mechanism 4. After starting the first conveying chain 512, the carrying plate 3 can move along the direction of the first conveying chain 512.

[0077] Reference Figure 2 and Figure 4 , a rotating table 514 for adjusting the angle of the carrying plate 3 is rotatably connected in the conveying table 51, and the rotating table 514 is located between the two first conveying frames 511. When the first lifting device 513 is not started, the top wall of the rotating table 514 extends out of the first conveying chain 512. The first conveying chain 512 can be in the form of a chain or a conveyor belt. A limit plate 515 is provided on the surface of the conveying table 51 by welding. The length direction of the limit plate 515 is consistent with the length direction of the conveying table 51. A stopper 516 is provided on the surface of the conveying table 51 by welding. The stopper 516 is located between the conveying table 51 and the limit plate 515. When the carrying plate 3 is transported on the first conveying chain 512, its length direction is consistent with the conveying direction. When the load board 3 is moved to the left, the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the left, the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board 3 is moved to the right, and the load board

[0078] Reference Figure 2 and Figure 3Two parallel second conveying racks 521 are provided in the carrying platform 52, and each second conveying rack 521 is rotatably connected to a second conveying chain 522. A number of carrying plates 3 are stacked in piles on the surface of the two second conveying chains 522. A second lifting device 525 is provided in the carrying platform 52. In this embodiment, the second lifting device 525 is a cylinder. The second lifting device 525 pushes the bottom carrying plate 3, so that the stacked carrying plate 3 can be separated from the second conveying chain 522. At this time, the distance between the bottom carrying plate 3 and the surface of the second conveying chain 522 is enough for a new carrying plate 3 to be placed.

[0079] Reference Figure 2 and Figure 3 , support plates are provided on the inner walls of the two length directions of the carrying platform 52, and two support pieces 523 are integrally formed on the side of the support plate facing the carrying plate 3. The width of the support piece 523 is consistent with the width of the support groove 31 of the carrying plate 3. Two driving members 524 are provided on the inner wall of the carrying platform 52 by welding. The driving members 524 correspond to the support plates one by one. In this embodiment, the driving member 524 is a cylinder, which drives the support plate and the support piece 523 to move along the direction of the support groove 31 of the carrying plate 3, so that after the second lifting device 525 is removed, the carrying plate 3 can be supported by the support piece 523 to allow a new carrying plate 3 to enter the second conveyor chain 522, so that the idle carrying plates 3 can be stacked in order to ensure the cleanliness and orderliness of the production line.

[0080] Reference Figure 2 and Figure 5 , a conveying platform 6 is provided at one end of the carrying platform 52 away from the conveying platform 51, and two third conveying frames 61 parallel to each other are provided in the conveying platform 6, and the length direction of the third conveying frame 61 is parallel to the length direction of the first conveying frame 511, and the third conveying frame 61 is rotatably connected to the third conveying chain 62 for transporting the carrying plate 3. The conveying mechanism 4 and the conveying platform 6 are connected through the third conveying chain 62, and a third lifting device 63 for driving the third conveying frame 61 to rise and fall is provided in the conveying platform 51. In this embodiment, the third lifting device 63 is a cylinder. After the carrying plate 3 is placed on the surface of the conveying platform 6, by starting the third lifting device 63, the third conveying chain 62 can lift the third conveying frame 61 and the third conveying chain 62, thereby transporting the carrying plate 3 toward the conveying mechanism 4, which has high automation capability and saves time and energy for manual handling of the carrying plate 3.

[0081] The implementation principle of a hydraulic motor assembly production line in Example 1 of the present application is as follows: before assembling parts, the casting sand remaining inside the parts during molding is removed on a drilling machine 1, so that the parts can adapt to each other during assembly, improving the problem of internal casting sand abrading the surfaces of other parts during assembly, causing damage to the parts, and improving the accuracy, efficiency and safety of assembly; the stains on the surface of the parts and the sand cleaned on the drilling machine 1 can be washed away by a cleaning machine 2, so that the parts can be kept neat and easy to assemble;

[0082] The parts assembled into a complete hydraulic motor are placed on the same carrier plate 3, and the number of parts can be counted in the preparation stage of assembly, which effectively reduces the probability of missing parts during the assembly process, improves the success rate of one-time assembly, and reduces labor intensity; the carrier plate 3 can be transported along the conveying mechanism 4, and the assembly of the hydraulic motor can be carried out step by step, making the entire assembly process more orderly and improving the convenience and accuracy of assembly.

[0083] Example 2:

[0084] Reference Figure 6 and Figure 7 , Example 2 of the present application differs from Example 1 in that the automatic stacking device 5 also includes a plate transport assembly 7, which includes a column 71, a sliding plate 72, a moving part 73, a lifting part 74 and a clamping part 75. The column 71 is vertically arranged, and the column 71 is connected to the ground by anchor bolts. The sliding plate 72 is connected to the end of the column 71 away from the ground by welding. The length direction of the sliding plate 72 is consistent with the length direction of the load-bearing platform 52, and the sliding plate 72 is located above the stacked load-bearing plates 3.

[0085] Reference Figure 7 and Figure 8 The bottom wall of the sliding plate 72 is provided with a sliding groove 721 along the length direction, and the moving member 73 is arranged in the sliding groove 721. In this embodiment, the moving member 73 includes a motor, a limit rod, a screw rod and a slider. The screw rod is rotatably connected to the sliding groove 721. The length direction of the screw rod is consistent with the length direction of the sliding plate 72. The slider is threadedly connected to the peripheral wall of the screw rod and abuts against the inner wall of the sliding groove 721. The limit rod is arranged in the sliding groove 721. The limit rod and the screw rod are parallel to each other. The limit rod is arranged through the slider, and the motor is arranged on the outer wall of the sliding plate 72. The output shaft of the motor passes through the sliding plate 72 and is connected to the screw rod, thereby driving the screw rod to rotate, so that the slider can slide along the length direction of the limit rod.

[0086] Reference Figure 7 and Figure 8The lifting member 74 is connected to the bottom wall of the slider. In this embodiment, the lifting member 74 is a cylinder, and the piston rod of the lifting member 74 moves in the vertical direction; the clamping member 75 is connected to the bottom wall of the lifting member 74, and the lifting member 74 can drive the clamping member 75 to move toward the stacked supporting plates 3. In this embodiment, the clamping member 75 is a thumb cylinder, and its clamping block is opposite to the support groove 31 of the supporting plate 3, so that the topmost supporting plate 3 can be clamped and transported from the supporting platform 52 to the transport platform 6, which improves the problem that the supporting plates 3 are stacked too high and it is inconvenient for manual labor to pick up and place them, thereby reducing labor intensity and improving work efficiency.

[0087] Reference Figure 6 and Figure 7 , a pushing assembly 8 is provided on one side of the conveying mechanism 4 for pushing the carrying plate 3 loaded with parts. The pushing assembly 8 includes a support rod 81, a rotating disk 82, a power piece 83, a pushing rod 84, a pushing plate 85 and two limit columns 86. The support rod 81 is vertically arranged, and the support rod 81 is connected to the ground through an anchor bolt. The rotating disk 82 is rotatably connected to the end of the support rod 81 away from the ground. In this embodiment, the power piece 83 is a motor, and the output shaft of the power piece 83 is coaxially arranged and connected to the rotating disk 82, so as to drive the rotating disk 82 to rotate; one end of the pushing rod 84 is hinged to the rotating disk The movable plate 82 has a non-center point on its circular surface, and the other end is hinged to the side wall of the push plate 85. The push plate 85 is slidably connected to the frame of the conveying mechanism 4. The push plate 85 is against the roller body of the conveying mechanism 4, thereby pushing the supporting plate 3 to slide; the limiting column 86 is arranged on the surface of the conveying mechanism 4, and the length direction of the limiting column 86 is consistent with the length direction of this section of the conveying mechanism 4. The limiting column 86 passes through the push plate 85, so that the rotation of the rotating disk 82 can drive the push rod 84 to move, thereby using the push plate 85 to push the supporting plate 3, which can effectively save the physical strength of the staff.

[0088] The implementation principle of a hydraulic motor assembly production line in Example 2 of the present application is as follows: through the plate transport component 7, the carrying plate 3 can be automatically transported to the surface of the transport platform 6 when a new round of assembly is required, and transmitted to the surface of the transport mechanism 4 through the third conveyor chain 62, so as to save the physical strength of the staff; by setting the pushing component 8, the carrying plate 3 with parts placed thereon can be moved along the transport mechanism 4, saving the effort expended by the staff in manually pushing, saving physical strength, and improving work efficiency.

[0089] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydraulic motor assembly process, characterized in that: The steps include: Parts provided: including housing, cover, bearing, crankshaft, copper gasket, roller, bearing sleeve, baffle, piston, connecting rod for piston, retaining ring, retaining ring for hole, oil seal, O-ring, plunger sleeve, piston ring, piston connecting rod, plunger sleeve, connecting rod ring, double-ended key, locating ring, oil distribution plate, oil pan, cylindrical pin, spacer, plug, plug, sleeve and several screws. Check the chamfer and fillet of parts; Parts cleaning: transporting the parts to an assembly line for cleaning, wherein the assembly line comprises a drilling machine (1) and a cleaning machine (2), wherein the drilling machine (1) is used to remove residual casting sand inside the parts, and the cleaning machine (2) is used to clean and dry the parts; Parts classification: The parts required for assembling a hydraulic motor are collectively placed on a carrier plate (3), and the assembly line further comprises a conveying mechanism (4), and the carrier plate (3) is placed on the conveying mechanism (4) for transportation; Hydraulic motor main body assembly: the bearing plate (3) reaches the hydraulic motor main body assembly point, the conveying mechanism (4) stops running, the housing and the cover are installed into the bearing outer ring, the two ends of the crankshaft are installed into the bearing inner ring, and fixed with screws, the axial clearance is measured with a feeler gauge, and copper gaskets of corresponding specifications are assembled according to the measured axial clearance; Preparation process for assembling internal parts of the hydraulic motor: remove the cover, take out the crankshaft and place it on the corresponding carrier plate (3), start the conveying mechanism (4), and the carrier plate (3) continues to convey; Crankshaft assembly assembly: the carrier plate (3) reaches the crankshaft assembly assembly point, the conveying mechanism (4) stops running, the roller and the bearing sleeve are installed on the crankshaft, the baffle is glued to the crankshaft, and the baffle is fixed to the crankshaft wall by screws so that the baffle and the crankshaft end are in the same plane. After the assembly is completed, the conveying mechanism (4) is started, and the carrier plate (3) continues to be transported; Piston assembly assembly: the carrier plate (3) reaches the piston assembly assembly point, the conveying mechanism (4) stops running, and the piston connecting rod, retaining ring, and hole retaining ring are installed in the piston so that the ball head can rotate flexibly without any gap, and the piston connecting rod and the hole retaining ring do not contact each other. After the assembly is completed, the conveying mechanism (4) starts, and the carrier plate (3) continues to be transported; Hydraulic motor assembly: the carrier plate (3) reaches the hydraulic motor assembly point, the conveying mechanism (4) stops running, the oil seal is placed inside the cover, and the O-ring is installed, the O-ring and the piston ring are installed in the plunger sleeve, the assembled plunger sleeve and piston assembly are installed on the housing and fixed with screws; the connecting rod ring is assembled, the connecting rod ring is connected to the housing, the crankshaft assembly is installed in the connecting rod ring, the cover is closed and all screws are tightened; the double-headed key and the positioning ring are installed in the housing, the O-ring and the sealing ring are installed on the oil distribution plate, and the assembled oil distribution plate is assembled to the housing; Oil pan assembly: clean the oil pan, assemble the O-ring and sealing ring to the oil pan, assemble the oil pan to the housing, and secure it with screws; install plugs and rosettes according to the number of oil drain ports in the housing, check for axial movement, ensure the crankshaft can rotate flexibly, and put the sleeve on the crankshaft output end to complete the assembly of the hydraulic motor; Performance test: The assembled hydraulic motor is delivered to the experimenter for performance testing.

2. A hydraulic motor assembly process according to claim 1, characterized in that: During the assembly of the hydraulic motor, 515 sealing glue is applied at the junction of the plunger sleeve and the housing.

3. A hydraulic motor assembly process according to claim 2, characterized in that: When applying the 515 sealing glue, avoid the O-ring and the O-groove of the high-pressure cavity for installing the O-ring.

4. The hydraulic motor assembly process according to claim 1, characterized in that: Among the provided parts, there are no cracks on the surface of the screws, and the strength of the screws is grade 12.

9.

5. The hydraulic motor assembly process according to claim 1, characterized in that: During the assembly of the hydraulic motor body, the crankshaft assembly, the hydraulic motor and the oil pan, corresponding marks are marked after the screws are tightened.

6. The hydraulic motor assembly process according to claim 1, characterized in that: During the assembly of the oil pan, the oil pan adopts the D40, D47, and D90 models, and the double-headed key and the positioning ring are installed into the housing, and the cylindrical pin and the spacer are assembled at the same time.

7. A hydraulic motor assembly production line, used to implement the hydraulic motor assembly process according to any one of claims 1 to 6, characterized in that: include: A drilling machine (1) for cleaning the residual casting sand inside the parts; A cleaning machine (2) is connected to the drilling machine (1) and is used to clean and dry the cleaned parts; A plurality of carrier plates (3) for placing parts required for assembling a hydraulic motor; A conveying mechanism (4) is connected to the cleaning machine (2) and is used to convey the plurality of the carrier plates (3) in the direction of the assembly points of the components of the hydraulic motor; An automatic stacking device (5) is connected to the conveying mechanism (4) and is used for automatically stacking the idle carrying plates (3).

8. The hydraulic motor assembly production line according to claim 7, characterized in that: The automatic stacking device (5) comprises a conveying platform (51) and a bearing platform (52) which are connected to each other. The end of the conveying platform (51) which is away from the bearing platform (52) is connected to the conveying mechanism (4). A first conveying frame (511) is provided in the conveying platform (51). A first conveying chain (512) for transporting the bearing plate (3) is rotatably connected to the first conveying frame (511). A first lifting device (513) for driving the first conveying frame (511) to rise and fall is provided in the conveying platform (51). A rotating platform (514) for adjusting the angle of the bearing plate (3) is rotatably connected in the conveying platform (51). A limiting plate (515) is provided on the surface of the conveying platform (51). After the bearing plate (3) rotates, it is in contact with the limiting plate (515). abut against each other; a second conveying frame (521) is provided in the bearing platform (52), a second conveying chain (522) is rotatably connected to the second conveying frame (521), a support piece (523) is provided on the inner wall of the bearing platform (52), a support groove (31) for inserting the support piece (523) is provided on the bottom wall of the bearing plate (3), a driving member (524) is provided on the inner wall of the bearing platform (52), the driving member (524) drives the support piece (523) to slide along the length direction of the support groove (31), a second lifting device (525) is provided in the bearing platform (52), the second lifting device (525) is against the bottom wall of the bearing plate (3), and the second lifting device (525) drives the bearing plate (3) to separate from the second conveying chain (522).

9. The hydraulic motor assembly production line according to claim 8, characterized in that: A stopper (516) is provided on the surface of the conveying platform (51), and the stopper (516) is located between the conveying platform (51) and the limiting plate (515).

10. The hydraulic motor assembly production line according to claim 8, characterized in that: A conveying platform (6) is provided at one end of the carrying platform (52) away from the conveying platform (51), a third conveying frame (61) is provided in the conveying platform (6), a third conveying chain (62) for transporting the carrying plate (3) is rotatably connected to the third conveying frame (61), the length direction of the third conveying chain (62) is perpendicular to the length direction of the first conveying chain (512), the conveying mechanism (4) and the conveying platform (6) are connected through the third conveying chain (62), and a third lifting device (63) for driving the third conveying frame (61) to rise and fall is provided in the conveying platform (51).

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