Welding tool for H-shaped arm of loading machine and welding machining method for H-shaped arm

Abstract

The invention provides a loader H-arm welding tool and a welding machining method, and belongs to the technical field of loader equipment.The loader H-arm welding tool comprises a base, H-arm side plate discharging bins used for containing H-arm side plates are arranged at the two ends of the base, and an S-arm support positioning seat used for containing an S-arm support is arranged between the two H-arm side plate discharging bins; the S-arm supporting and positioning seat is fixedly arranged on the base, pushing and pressing mechanisms used for pushing and pressing H-arm side plates are arranged on the sides, away from the S-arm supporting and positioning seat, of the two H-arm side plate discharging bins, and pushing and guiding mechanisms used for guiding the H-arm side plates are arranged on the two sides of the pushing and pressing mechanisms. The sides, close to the S-arm supporting and positioning base, of the two H-arm side plate discharging bins are each provided with a positioning mechanism used for positioning an H-arm side plate. The loading machine H arm machined by the welding tool is qualified at a time, the welding assembly quality is improved, the assembly efficiency is high, the cost is low, and the welding tool has high practical value.

Description

Technical Field

[0001] The invention relates to the technical field of loader equipment, and in particular to a loader H-arm welding tool and an H-arm welding processing method. Background Art

[0002] A loader is a highly efficient heavy-duty engineering machinery. With its powerful engine power and flexible working device, it can efficiently shovel, transport and unload a variety of bulk materials such as soil, sand, gravel, coal, etc. It is widely used in civil engineering, mining, port logistics, urban construction and other fields. With its excellent operating efficiency, flexible operating performance and outstanding durability, it has become an indispensable and important tool in modern construction.

[0003] The working device of the loader is mainly composed of a bucket and an H-arm. The H-arm is welded by left and right H-arm side plates and an S-arm support. The bucket end hinge hole, frame end hinge hole, jacking cylinder hole and S-arm support of the H-arm have shape, size and position requirements. The H-arm needs to be assembled before welding. During the assembly process, the gap between the left and right H-arm side plates and the S-arm support at the assembly position is too large. Welding work is carried out on this basis, which seriously affects the production efficiency and quality of the H-arm.

[0004] In order to ensure the welding quality of the H-arm and improve the welding efficiency, we proposed a loader H-arm welding tool and an H-arm welding processing method. Summary of the invention

[0005] The object of the present invention is to provide a loader H-arm welding tool and an H-arm welding processing method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a loader H-arm welding tool, comprising a base, H-arm side plate discharge bins for placing H-arm side plates are provided at both ends of the base, an S-arm support positioning seat for placing an S-arm support is provided between the two H-arm side plate discharge bins, the S-arm support positioning seat is fixedly arranged on the base, a pushing and clamping mechanism for pushing and clamping the H-arm side plates is provided on one side of the two H-arm side plate discharge bins away from the S-arm support positioning seat, a pushing and guiding mechanism for guiding the H-arm side plates is provided on both sides of the pushing and clamping mechanism, and a positioning mechanism for positioning the H-arm side plates is provided on one side of the two H-arm side plate discharge bins close to the S-arm support positioning seat.

[0008] Furthermore, the pushing and clamping mechanism includes an oil tank, a three-position four-way reversing valve 1, a three-position four-way reversing valve 2, a working oil cylinder 1 and a working oil cylinder 2. The oil outlet end of the oil tank is connected to an oil pump 1, and the oil outlet end of the oil pump 1 is connected to the P port of the three-position four-way reversing valve 1. The A port of the three-position four-way reversing valve 1 is connected to the first oil port of the working oil cylinder 1, the B port of the three-position four-way reversing valve 1 is connected to the second oil port of the working oil cylinder 1, the T port of the three-position four-way reversing valve 1 is connected to the T port of the three-position four-way reversing valve 2, the A port of the three-position four-way reversing valve 2 is connected to the first oil port of the working oil cylinder 2, the B port of the three-position four-way reversing valve 2 is connected to the second oil port of the working oil cylinder 2, and the P port of the three-position four-way reversing valve 2 is connected to the oil return port of the oil tank.

[0009] Furthermore, an oil filter 1 is provided between the oil tank and the oil pump 1, the oil pump 1 is connected to the P port of the three-position four-way reversing valve 1 through a first oil pipe, and a first safety valve is provided on the first oil pipe.

[0010] Furthermore, a one-way throttle valve 1 is provided between the A port of the three-position four-way reversing valve 1 and the first oil port of the working cylinder 1, a one-way throttle valve 2 is provided between the B port of the three-position four-way reversing valve 1 and the second oil port of the working cylinder 1, a one-way throttle valve 3 is provided between the A port of the three-position four-way reversing valve 2 and the first oil port of the working cylinder 2, and a one-way throttle valve 4 is provided between the B port of the three-position four-way reversing valve 2 and the second oil port of the working cylinder 2.

[0011] Further, the push guide mechanism includes oil pump two, a three-position four-way reversing valve and a working oil cylinder, the three-position four-way reversing valve includes three-position four-way reversing valve three, three-position four-way reversing valve four, three-position four-way reversing valve five and three-position four-way reversing valve six, and the working oil cylinder includes working oil cylinder three, working oil cylinder four, working oil cylinder five and working oil cylinder six;

[0012] The oil inlet end of the oil pump 2 is connected to the oil outlet end of the oil tank, the oil outlet end of the oil pump 2 is connected to the P port of the three-position four-way reversing valve 3, the A port of the three-position four-way reversing valve 3 is connected to the first oil port of the working oil cylinder 3, the B port of the three-position four-way reversing valve 3 is connected to the second oil port of the working oil cylinder 3, the T port of the three-position four-way reversing valve 3 is connected to the T port of the three-position four-way reversing valve 4, the A port of the three-position four-way reversing valve 4 is connected to the first oil port of the working oil cylinder 4, the B port of the three-position four-way reversing valve 4 is connected to the second oil port of the working oil cylinder 4, and the The P port of the four-way reversing valve four is connected with the P port of the three-position four-way reversing valve five, the A port of the three-position four-way reversing valve five is connected with the first oil port of the working cylinder five, the B port of the three-position four-way reversing valve five is connected with the second oil port of the working cylinder five, the T port of the three-position four-way reversing valve five is connected with the T port of the three-position four-way reversing valve six, the A port of the three-position four-way reversing valve six is ​​connected with the first oil port of the working cylinder six, the B port of the three-position four-way reversing valve six is ​​connected with the second oil port of the working cylinder six, and the P port of the three-position four-way reversing valve six is ​​connected with the oil return port of the oil tank.

[0013] Furthermore, an oil filter 2 is provided between the oil tank and the oil pump 2, the oil pump 2 is connected to the P port of the three-position four-way reversing valve 3 through a second oil pipe, and a second safety valve is provided on the second oil pipe.

[0014] Furthermore, a one-way throttle valve five is provided between the A port of the three-position four-way reversing valve three and the first oil port of the working cylinder three, a one-way throttle valve six is ​​provided between the B port of the three-position four-way reversing valve three and the second oil port of the working cylinder three, a one-way throttle valve seven is provided between the A port of the three-position four-way reversing valve four and the first oil port of the working cylinder four, a one-way throttle valve eight is provided between the B port of the three-position four-way reversing valve four and the second oil port of the working cylinder four, a one-way throttle valve nine is provided between the A port of the three-position four-way reversing valve five and the first oil port of the working cylinder five, a one-way throttle valve ten is provided between the B port of the three-position four-way reversing valve five and the second oil port of the working cylinder five, a one-way throttle valve eleven is provided between the A port of the three-position four-way reversing valve six and the first oil port of the working cylinder six, and a one-way throttle valve twelve is provided between the B port of the three-position four-way reversing valve six and the second oil port of the working cylinder six.

[0015] Furthermore, the first oil pipe and the second oil pipe are both provided with pressure gauges for detecting the oil pipe pressure.

[0016] Furthermore, the positioning mechanism includes an electric push rod, which is fixed on a base, and one end of the electric push rod is detachably fixedly connected to a positioning shaft for positioning the H-arm side plate.

[0017] The present invention also provides a loader H-arm welding processing method for installing and positioning the loader H-arm, comprising the following steps:

[0018] S1: Use a double-sided milling machine to mill the openings on both ends of the S-arm support flat according to the size requirements;

[0019] S2: Position the S-arm support on the S-arm support positioning seat, then fix the S-arm support and the S-arm support positioning seat, and place multiple H-arm side panels in the H-arm side panel discharge bins at both ends of the base;

[0020] S3: After the H-arm side plate is discharged in the H-arm side plate discharge bin, the piston rods of two working cylinders of the push guide mechanism are respectively extended into the frame section hinge holes of the H-arm side plate to guide the H-arm side plate, and the piston rods of the other two working cylinders of the push guide mechanism are respectively extended into the bucket end hinge holes of the H-arm side plate to guide the H-arm side plate, and then the working cylinder 1 and the working cylinder 2 respectively push and press the H-arm side plate to the two end surfaces of the S-arm support;

[0021] S4: When the H-arm side plate is pushed and pressed to the two end surfaces of the S-arm support, the electric push rod pushes the positioning shaft into the frame end hinge hole and bucket end hinge hole of the H-arm side plate to position the H-arm side plate;

[0022] S5: After the H-arm side wall is positioned, the connection position between the H-arm side plate and the S-arm support is welded and assembled;

[0023] S6: The welded H-arm is lowered for cooling, and the welding of the next H-arm is started at the same time.

[0024] Compared with the prior art, the present invention has the following technical effects:

[0025] In the present invention, the S-arm support is fixedly placed on the S-arm support positioning seat, the H-arm side plates are respectively placed in the H-arm side plate discharge bins at both ends of the base, the working cylinder 1 and the working cylinder 2 of the pushing and clamping mechanism respectively push and clamp the H-arm side plates to the two end surfaces of the S-arm support, and the H-arm is assembled. The assembly gap between the H-arm side plates and the S-arm support can reach 0.10-0.50mm, the height difference of the hinge holes at the frame end between the H-arm side plates on both sides of the S-arm support is ≤0.15mm, and the height difference of the hinge holes at the bucket end is ≤0.15mm. The assembly precision is high, which ensures the subsequent welding quality. After the assembly is completed, the welding equipment welds the connection between the H-arm side plate and the S-arm support. The loader H-arm processed by the welding tooling is qualified at one time, which improves the welding assembly quality, has high assembly efficiency, and low cost, and has strong practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a loader H-arm welding tooling according to an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0028] Figure 3 It is a structural schematic diagram of a pushing and pressing mechanism according to an embodiment of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a push guide mechanism according to an embodiment of the present invention;

[0030] Figure 5 The figure is a flow chart of a loader H-arm welding method according to an embodiment of the present invention.

[0031] Description of the accompanying drawings: 1. base, 2. H-arm side plate discharge bin, 3. S-arm support positioning seat, 4. H-arm side plate, 5. S-arm support, 6. push-pressing mechanism, 61. oil tank, 62. oil filter 1, 63. oil pump 1, 64. first oil pipe, 65. first safety valve, 66. three-position four-way reversing valve 1, 67. three-position four-way reversing valve 2, 68. working oil cylinder 1, 69. working oil cylinder 2, 691. one-way throttle valve 1, 692. one-way throttle valve 2, 693. one-way throttle valve 3, 694. one-way throttle valve 4, 7. push-guide mechanism, 71. oil filter 2, 72. oil pump 2, 73. second oil pipe, 7 4. Second safety valve, 75. Three-position four-way reversing valve three, 76. Three-position four-way reversing valve four, 77. Three-position four-way reversing valve five, 78. Three-position four-way reversing valve six, 79. Working cylinder three, 701. Working cylinder four, 702. Working cylinder five, 703. Working cylinder six, 704. One-way throttle valve five, 705. One-way throttle valve six, 706. One-way throttle valve seven, 707. One-way throttle valve eight, 708. One-way throttle valve nine, 709. One-way throttle valve ten, 710. One-way throttle valve eleven, 711. One-way throttle valve eleven, 8. Positioning mechanism, 81. Electric push rod, 82. Positioning shaft, 9. Pressure gauge. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0033] In this article, terms such as "left, right, up, down, front, and back" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection.

[0034] like Figures 1 to 4As shown, this embodiment provides a loader H-arm welding tool, including a base 1, with H-arm side plate discharge bins 2 at both ends of the base 1, the H-arm side plate discharge bins 2 are used to place H-arm side plates 4, and each H-arm side plate discharge bin 2 can place 10 H-arm side plates 4. An S-arm support positioning seat 3 is provided between the H-arm side plate discharge bins 2 at both ends of the base 1, and the S-arm support positioning seat 3 is fixedly arranged on the base 1, and the S-arm support positioning seat 3 is used to place the S-arm support 5 of the H-arm.

[0035] Specifically, the two H-arm side discharge bins 2 are provided with a push-and-hold mechanism 6 on one side away from the S-arm support positioning seat 3, and the push-and-hold mechanism 6 is used to push and hold the H-arm side plate 4 to the two end surfaces of the S-arm support 5. Push-and-hold guide mechanisms 7 are provided on both sides of the push-and-hold mechanism 6, and when the push-and-hold mechanism 6 pushes the H-arm side plate 4, the push-and-hold guide mechanism 7 guides the H-arm side plate 4 to ensure the assembly accuracy of the H-arm side plate 4 and the S-arm support 5.

[0036] Specifically, a positioning mechanism 8 is provided on one side of the two H-arm side plate discharge bins 2 close to the S-arm support positioning seat 3. When the pushing and pressing mechanism 6 pushes and presses the H-arm side plate 4 to the two end surfaces of the S-arm support 5, the positioning mechanism 8 positions the H-arm side plate 4 to ensure the subsequent welding accuracy of the H-arm. In this embodiment, four positioning mechanisms 8 are provided, two of which are respectively provided at the two ends of the left H-arm side plate discharge bin 2, and the other two positioning mechanisms 8 are respectively provided at the two ends of the right H-arm side plate discharge bin 2.

[0037] Specifically, Figure 2 As shown, the positioning mechanism 8 includes an electric push rod 81, which is fixedly arranged on the base 1 through a bracket, and one end of the electric push rod 81 is detachably fixedly connected with a positioning shaft 81. During operation, when the pushing and clamping mechanism 6 pushes the H-arm side plate 4 to the two end surfaces of the S-arm support 5, the two electric push rods 81 at the same end drive the positioning shaft 82 into the frame end hinge hole of the H-arm side plate 4 to position the H-arm side plate 4, and the two electric push rods 81 at the other same end drive the positioning shaft 82 into the bucket end hinge hole of the H-arm side plate 4 to position the H-arm side plate 4.

[0038] Specifically, in the present invention, the S-arm support 5 is fixedly placed on the S-arm support positioning seat 3, the H-arm side plates 4 are respectively placed in the H-arm side plate discharge bins 2 at both ends of the base 1, and the working cylinder 1 68 and the working cylinder 2 69 of the pushing and clamping mechanism 6 push and clamp the H-arm side plates 4 to the two end surfaces of the S-arm support 5 respectively, and the H-arm is assembled. The assembly gap between the H-arm side plates 4 and the S-arm support 5 can reach 0.10-0.50mm, and the height difference of the frame end hinge hole between the H-arm side plates 4 on both sides of the S-arm support 5 is ≤0.15mm, and the height difference of the bucket end hinge hole is ≤0.15mm. The assembly accuracy is high, thereby ensuring the subsequent welding quality of the H-arm. After the assembly is completed, the welding robot welds the connection between the H-arm side plates 4 and the S-arm support 5. The loader H-arm processed by the welding tooling is qualified at one time, which improves the welding assembly quality, has high assembly efficiency, and low cost, and has strong practical value.

[0039] Specifically, Figure 3 As shown, the pushing and clamping mechanism 6 includes an oil tank 61, a three-position four-way reversing valve and a working oil cylinder. The three-position four-way reversing valve includes a three-position four-way reversing valve 1 66 and a three-position four-way reversing valve 2 67, and the working oil cylinder includes a working oil cylinder 1 68 and a working oil cylinder 2 69. The oil outlet of the oil tank 61 is connected to the oil pump 1 63, the oil outlet of the oil pump 1 63 is connected to the P port of the three-position four-way reversing valve 1 66, the A port of the three-position four-way reversing valve 1 66 is connected to the first oil port of the working oil cylinder 1 68, the B port of the three-position four-way reversing valve 1 66 is connected to the second oil port of the working oil cylinder 1 68, the T port of the three-position four-way reversing valve 1 66 is connected to the T port of the three-position four-way reversing valve 2 67, the A port of the three-position four-way reversing valve 2 67 is connected to the first oil port of the working oil cylinder 2 69, the B port of the three-position four-way reversing valve 2 67 is connected to the second oil port of the working oil cylinder 2 69, and the P port of the three-position four-way reversing valve 2 67 is connected to the oil return port of the oil tank 61. An oil filter 1 62 is also provided between the oil tank 61 and the oil pump 1 63, and the oil filter 1 62 can filter out impurities in the hydraulic oil to ensure the normal operation of the push and clamp mechanism 6. The oil pump 1 63 is connected to the P port of the three-position four-way reversing valve 1 66 through the first oil pipe 64. The first safety valve 65 is provided on the first oil pipe 64. The first safety valve 65 can be provided to relieve the pressure in the first oil pipe 64 when it exceeds the set value, so as to avoid excessive pressure in the first oil pipe 64 and protect the hydraulic system of the pushing and pressing mechanism 6. A pressure gauge 9 is also installed on the first oil pipe 64, and the pressure gauge 9 can display the pressure in the first oil pipe 64 in real time so that the staff can check it in time.

[0040] Specifically, a one-way throttle valve 1 691 is provided between the A port of the three-position four-way reversing valve 1 66 and the first oil port of the working cylinder 1 68, a one-way throttle valve 2 692 is provided between the B port of the three-position four-way reversing valve 1 66 and the second oil port of the working cylinder 1 68, a one-way throttle valve 3 693 is provided between the A port of the three-position four-way reversing valve 2 67 and the first oil port of the working cylinder 2 69, and a one-way throttle valve 4 694 is provided between the B port of the three-position four-way reversing valve 2 67 and the second oil port of the working cylinder 2 69. The one-way regulating valves adjust the flow of hydraulic oil in a specific direction according to actual needs, and cut off the flow in the reverse direction, thereby protecting the hydraulic system from the influence of backflow and ensuring the stability and reliability of the system.

[0041] Specifically, the T port of the three-position four-way reversing valve 1 66 is connected to the T port of the three-position four-way reversing valve 2 67 , so that the movement of the working cylinder 1 68 and the working cylinder 2 69 can be synchronized.

[0042] Specifically, during operation, if the three-position four-way reversing valve 1 66 and the three-position four-way reversing valve 2 67 are both in the left position, the hydraulic oil enters the rodless chamber of the working cylinder 1 68 through the P port and the A port of the three-position four-way reversing valve 1 66 and the first oil port of the working cylinder 1 68, the pressure in the rodless chamber increases, the piston moves forward, and the hydraulic oil in the rod chamber of the working cylinder 1 68 enters the rodless chamber of the working cylinder 2 69 through the B port and the T port of the three-position four-way reversing valve 1 66 and the T port and the B port of the three-position four-way reversing valve 2 and the second oil port of the working cylinder 2 69, the pressure in the rodless chamber increases, the piston moves forward, and the hydraulic oil in the rod chamber of the working cylinder 2 69 returns to the oil tank 61 through the A port and the P port of the three-position four-way reversing valve 2 67. If the three-position four-way reversing valve 1 66 and the three-position four-way reversing valve 2 67 are both in the right position, the pistons of the working cylinder 1 68 and the working cylinder 2 69 both retreat, and the specific process will not be described in detail. If the three-position four-way reversing valve 1 66 is in the left position and the three-position four-way reversing valve 2 67 is in the right position, the piston of the working cylinder 1 68 moves forward and the piston of the working cylinder 2 69 moves backward, and the specific process will not be described in detail. If the three-position four-way reversing valve 1 66 is in the right position and the three-position four-way reversing valve 2 67 is in the left position, the piston of the working cylinder 1 68 moves backward and the piston of the working cylinder 2 69 moves forward, and the specific process will not be described in detail.

[0043] Specifically, Figure 4As shown, the pushing guide mechanism 7 includes an oil pump 2 72, a three-position four-way reversing valve and a working cylinder. The three-position four-way reversing valve includes a three-position four-way reversing valve 75, a three-position four-way reversing valve 4 76, a three-position four-way reversing valve 5 77 and a three-position four-way reversing valve 6 78. The working cylinder includes a working cylinder 3 79, a working cylinder 4 701, a working cylinder 5 702 and a working cylinder 6 703. The oil inlet end of the oil pump 2 72 is connected to the oil outlet end of the oil tank 61, the oil outlet end of the oil pump 2 72 is connected to the P port of the three-position four-way reversing valve 3 75, the A port of the three-position four-way reversing valve 3 75 is connected to the first oil port of the working oil cylinder 3 79, the B port of the three-position four-way reversing valve 3 75 is connected to the second oil port of the working oil cylinder 3 79, the T port of the three-position four-way reversing valve 3 75 is connected to the T port of the three-position four-way reversing valve 4 76, the A port of the three-position four-way reversing valve 4 76 is connected to the first oil port of the working oil cylinder 4 701, the B port of the three-position four-way reversing valve 4 76 is connected to the second oil port of the working oil cylinder 4 701, and the three-position four-way reversing valve 4 76 is connected to the second oil port of the working oil cylinder 4 701. The P port of the directional valve 4 76 is connected to the P port of the 3-position 4-way reversing valve 5 77, the A port of the 3-position 4-way reversing valve 5 77 is connected to the first oil port of the working oil cylinder 5 702, the B port of the 3-position 4-way reversing valve 5 77 is connected to the second oil port of the working oil cylinder 5 702, the T port of the 3-position 4-way reversing valve 5 77 is connected to the T port of the 3-position 4-way reversing valve 6 78, the A port of the 3-position 4-way reversing valve 6 78 is connected to the first oil port of the working oil cylinder 6 703, the B port of the 3-position 4-way reversing valve 6 78 is connected to the second oil port of the working oil cylinder 6 703, and the P port of the 3-position 4-way reversing valve 6 78 is connected to the oil return port of the oil tank 61. An oil filter 2 71 is also provided between the oil tank 61 and the oil pump 2 72, and the oil filter 2 71 can filter out impurities in the hydraulic oil to ensure the normal operation of the push guide mechanism 7. The oil pump 2 72 is connected to the P port of the three-position four-way reversing valve 3 75 through the second oil pipe 73. The second oil pipe 73 is provided with a second safety valve 74. The function of the second safety valve 74 is the same as that of the first safety valve 65 in the pushing and pressing mechanism 6, and will not be described in detail here. The second oil pipe 73 is also provided with a pressure gauge 9, which can display the pressure in the second oil pipe 7 in real time so that the staff can check it in time.

[0044] Specifically, a one-way throttle valve five 704 is provided between the A port of the three-position four-way reversing valve three 75 and the first oil port of the working oil cylinder three 79, a one-way throttle valve six 705 is provided between the B port of the three-position four-way reversing valve three 75 and the second oil port of the working oil cylinder three 79, a one-way throttle valve seven 706 is provided between the A port of the three-position four-way reversing valve four 76 and the first oil port of the working oil cylinder four 701, and a one-way throttle valve eight 707 is provided between the B port of the three-position four-way reversing valve four 76 and the second oil port of the working oil cylinder four 701. A one-way throttle valve nine 708 is provided between the A port of the three-position four-way reversing valve five 77 and the first oil port of the working oil cylinder five 702, a one-way throttle valve ten 709 is provided between the B port of the three-position four-way reversing valve five 77 and the second oil port of the working oil cylinder five 702, a one-way throttle valve eleven 710 is provided between the A port of the three-position four-way reversing valve six 78 and the first oil port of the working oil cylinder six 703, and a one-way throttle valve twelve 711 is provided between the B port of the three-position four-way reversing valve six 78 and the second oil port of the working oil cylinder six 703. The one-way throttle valve provided on the push guide mechanism 7 has the same function as the one-way throttle valve provided on the push clamping mechanism 6, and will not be described in detail here.

[0045] Specifically, the T port of the three-position four-way reversing valve three 75 is connected to the T port of the three-position four-way reversing valve four 76, the P port of the three-position four-way reversing valve four 76 is connected to the P port of the three-position four-way reversing valve five 77, and the T port of the three-position four-way reversing valve five 77 is connected to the T port of the three-position four-way reversing valve six 78, so that the synchronization of the movement of working cylinder three 79, working cylinder four 701, working cylinder five 702 and working cylinder six 703 can be achieved.

[0046] Specifically, the working principle of the hydraulic oil circuit of the pushing guide mechanism 7 is the same as the working principle of the hydraulic oil circuit of the pushing and clamping mechanism 6, which will not be described in detail here.

[0047] like Figure 5 As shown, this embodiment also provides a loader H-arm welding processing method, comprising the following steps:

[0048] S1: Use a double-sided milling machine to mill the openings on both end surfaces of the S-arm support 5 according to the size requirements.

[0049] S2: Position the S-arm support 5 on the S-arm support positioning seat 3, then fix the S-arm support 5 to the S-arm support positioning seat 3, and then divide the 20 H-arm side panels 4 into two groups, with 10 H-arm side panels 4 in each group, and place the two groups of H-arm side panels 4 in the H-arm side panel discharge bins 2 at both ends of the base 1 respectively.

[0050] S3: After the H-arm side plate 4 is discharged in the H-arm side plate discharge bin 2, the pistons of the working cylinder 3 79 and the working cylinder 4 701 in the push guide mechanism 7 extend into the hinge hole at the frame end of the H-arm side plate 4 to guide the end of the H-arm side plate 4. The pistons of the working cylinder 5 702 and the working cylinder 6 703 in the push guide mechanism 7 extend into the hinge hole at the bucket end of the H-arm side plate 4 to guide the end of the H-arm side plate 4. Then the working cylinder 1 68 and the working cylinder 2 69 of the push clamping mechanism 6 push and clamp the H-arm side plate 4 to the two end surfaces of the S-arm support 5 respectively.

[0051] S4: When the H-arm side plate 4 is pushed and pressed against the two end surfaces of the S-arm support 5, the electric push rod 81 pushes the positioning shaft 82 into the frame end hinge hole and the bucket end hinge hole of the H-arm side plate 4 to position the H-arm side plate 4.

[0052] S5: After the H-arm side plate 4 is positioned, the connection position between the H-arm side plate 4 and the S-arm support 5 is welded and assembled.

[0053] S6: The welded H-arm is lowered for cooling, and the welding of the next H-arm is started at the same time.

[0054] The above embodiments are only to illustrate the basic principles and characteristics of the present invention, but are not limited to the above embodiments. It should be understood that for ordinary technicians in this field, various changes and modifications can be made to the present invention without departing from the spirit and scope of the present invention, and these changes and modifications fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A loader H-arm welding tool, characterized in that: The invention comprises a base (1), wherein two ends of the base (1) are provided with H-arm side plate discharge bins (2) for placing H-arm side plates (4), an S-arm support positioning seat (3) for placing an S-arm support (5) is provided between the two H-arm side plate discharge bins (2), and the S-arm support positioning seat (3) is fixedly arranged on the base (1), and a pushing and clamping mechanism (6) for pushing and clamping the H-arm side plates (4) is provided on the side of the two H-arm side plate discharge bins (2) away from the S-arm support positioning seat (3), and a pushing and guiding mechanism (7) for guiding the H-arm side plates (4) is provided on both sides of the pushing and clamping mechanism (6), and a positioning mechanism (8) for positioning the H-arm side plates (4) is provided on the side of the two H-arm side plate discharge bins (2) close to the S-arm support positioning seat (3).

2. The loader H-arm welding tooling according to claim 1, characterized in that: The pushing and pressing mechanism (6) comprises an oil tank (61), a three-position four-way reversing valve (66), a three-position four-way reversing valve (67), a working oil cylinder (68) and a working oil cylinder (69); the oil outlet end of the oil tank (61) is connected to an oil pump (63); the oil outlet end of the oil pump (63) is connected to a P port of the three-position four-way reversing valve (66); the A port of the three-position four-way reversing valve (66) is connected to a first oil port of the working oil cylinder (68); the three-position four-way reversing valve (66) is connected to a first oil port of the working oil cylinder (68); The B port of valve one (66) is connected to the second oil port of working cylinder one (68), the T port of the three-position four-way reversing valve one (66) is connected to the T port of the three-position four-way reversing valve two (67), the A port of the three-position four-way reversing valve two (67) is connected to the first oil port of working cylinder two (69), the B port of the three-position four-way reversing valve two (67) is connected to the second oil port of working cylinder two (69), and the P port of the three-position four-way reversing valve two (67) is connected to the oil return port of the oil tank (61).

3. The loader H-arm welding tooling according to claim 2, characterized in that: An oil filter (62) is provided between the oil tank (61) and the oil pump (63). The oil pump (63) is connected to the P port of the three-position four-way reversing valve (66) through a first oil pipe (64). A first safety valve (65) is provided on the first oil pipe (64).

4. The loader H-arm welding tooling according to claim 3, characterized in that: A one-way throttle valve (691) is provided between the A port of the three-position four-way reversing valve (66) and the first oil port of the working cylinder (68), a one-way throttle valve (692) is provided between the B port of the three-position four-way reversing valve (66) and the second oil port of the working cylinder (68), a one-way throttle valve (693) is provided between the A port of the three-position four-way reversing valve (67) and the first oil port of the working cylinder (69), and a one-way throttle valve (694) is provided between the B port of the three-position four-way reversing valve (67) and the second oil port of the working cylinder (69).

5. The loader H-arm welding tool according to claim 4, characterized in that: The push guide mechanism (7) comprises an oil pump 2 (72), a three-position four-way reversing valve and a working oil cylinder, the three-position four-way reversing valve comprises a three-position four-way reversing valve 3 (75), a three-position four-way reversing valve 4 (76), a three-position four-way reversing valve 5 (77) and a three-position four-way reversing valve 6 (78), and the working oil cylinder comprises a working oil cylinder 3 (79), a working oil cylinder 4 (701), a working oil cylinder 5 (702) and a working oil cylinder 6 (703); The oil inlet end of the oil pump 2 (72) is connected to the oil outlet end of the oil tank (61), the oil outlet end of the oil pump 2 (72) is connected to the P port of the three-position four-way reversing valve 3 (75), the A port of the three-position four-way reversing valve 3 (75) is connected to the first oil port of the working oil cylinder 3 (79), the B port of the three-position four-way reversing valve 3 (75) is connected to the second oil port of the working oil cylinder 3 (79), the T port of the three-position four-way reversing valve 3 (75) is connected to the T port of the three-position four-way reversing valve 4 (76), the A port of the three-position four-way reversing valve 4 (76) is connected to the first oil port of the working oil cylinder 4 (701), the B port of the three-position four-way reversing valve 4 (76) is connected to the second oil port of the working oil cylinder 4 (701), and the The P port of the four-way reversing valve (76) is connected to the P port of the three-position four-way reversing valve (77), the A port of the three-position four-way reversing valve (77) is connected to the first oil port of the working oil cylinder (702), the B port of the three-position four-way reversing valve (77) is connected to the second oil port of the working oil cylinder (702), the T port of the three-position four-way reversing valve (77) is connected to the T port of the three-position four-way reversing valve (78), the A port of the three-position four-way reversing valve (78) is connected to the first oil port of the working oil cylinder (703), the B port of the three-position four-way reversing valve (78) is connected to the second oil port of the working oil cylinder (703), and the P port of the three-position four-way reversing valve (78) is connected to the oil return port of the oil tank (61).

6. The loader H-arm welding tooling according to claim 5, characterized in that: An oil filter (71) is provided between the oil tank (61) and the oil pump (72). The oil pump (72) is connected to the P port of the three-position four-way reversing valve (75) through a second oil pipe (73). A second safety valve (74) is provided on the second oil pipe (73).

7. The loader H-arm welding tool according to claim 6, characterized in that: A one-way throttle valve five (704) is provided between the A port of the three-position four-way reversing valve three (75) and the first oil port of the working oil cylinder three (79), a one-way throttle valve six (705) is provided between the B port of the three-position four-way reversing valve three (75) and the second oil port of the working oil cylinder three (79), a one-way throttle valve seven (706) is provided between the A port of the three-position four-way reversing valve four (76) and the first oil port of the working oil cylinder four (701), a one-way throttle valve eight (707) is provided between the B port of the three-position four-way reversing valve four (76) and the second oil port of the working oil cylinder four (701), A one-way throttle valve nine (708) is provided between the A port of the three-position four-way reversing valve five (77) and the first oil port of the working oil cylinder five (702), a one-way throttle valve ten (709) is provided between the B port of the three-position four-way reversing valve five (77) and the second oil port of the working oil cylinder five (702), a one-way throttle valve eleven (710) is provided between the A port of the three-position four-way reversing valve six (78) and the first oil port of the working oil cylinder six (703), and a one-way throttle valve twelve (711) is provided between the B port of the three-position four-way reversing valve six (78) and the second oil port of the working oil cylinder six (703).

8. The loader H-arm welding tooling according to claim 7, characterized in that: The first oil pipe (64) and the second oil pipe (73) are both provided with pressure gauges (9) for detecting the oil pipe pressure.

9. The loader H-arm welding tool according to claim 1, characterized in that: The positioning mechanism (8) comprises an electric push rod (81) which is fixedly arranged on the base (1), and one end of the electric push rod (81) is detachably fixedly connected to a positioning shaft (82) for positioning the H-arm side plate (4).

10. A loader H-arm welding method, characterized in that: The following steps are involved: S1: Use a double-sided milling machine to mill the openings on both ends of the S-arm support (5) according to the size requirements; S2: Positioning the S-arm support (5) on the S-arm support positioning seat (3), then fixing the S-arm support (5) to the S-arm support positioning seat (3), and placing a plurality of H-arm side plates (4) in the H-arm side plate discharge bins (2) at both ends of the base (1); S3: After the H-arm side plate (4) is discharged in the H-arm side plate discharge bin (2), the piston rods of two working cylinders of the push guide mechanism (7) are respectively extended into the hinge holes at the frame end of the H-arm side plate (4) to guide the H-arm side plate (4), and the piston rods of the other two working cylinders of the push guide mechanism (7) are respectively extended into the hinge holes at the bucket end of the H-arm side plate (4) to guide the H-arm side plate (4), and then the working cylinder 1 (68) and the working cylinder 2 (69) are respectively pushed and pressed to the two end surfaces of the S-arm support (5); S4: When the H-arm side plate (4) is pushed and pressed against the two end surfaces of the S-arm support (5), the electric push rod (81) pushes the positioning shaft (82) into the frame end hinge hole and the bucket end hinge hole of the H-arm side plate (4) to position the H-arm side plate (4); S5: After the H-arm side plate (4) is positioned, the connection position between the H-arm side plate (4) and the S-arm support (5) is welded and assembled; S6: The welded H-arm is lowered for cooling, and the welding of the next H-arm is started at the same time.

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