Forklift counterweight assembly, welding positioning tool and forklift counterweight welding process

Abstract

The invention relates to the technical field of forklift balance weight welding processes, in particular to a forklift balance weight assembly, a welding positioning tool and a forklift balance weight welding process. The welding positioning tool comprises a base plate, a first middle limiting frame, a first left limiting frame, a first right limiting frame and a second left limiting frame, wherein the first middle limiting frame is arranged on the base plate and used for positioning a rear main lower plate and a rear main upper plate; the first left limiting frame is used for positioning a left arc-shaped main plate; the first right limiting frame is used for positioning a right arc-shaped main plate; the second right limiting frame is used for positioning the right upper bottom plate; and the front positioning assembly is used for positioning the front bottom plate, the lower bottom plate, the left side bottom plate and the right side bottom plate. The forklift counter weight assembly can be pre-assembled through the welding positioning tool, the forklift counter weight assembly is accurately positioned, and the welding efficiency and the welding quality of the forklift counter weight welding process are improved.

Description

Technical Field

[0001] This invention relates to the field of forklift counterweight welding technology, and in particular to a forklift counterweight component, welding positioning fixture, and forklift counterweight welding process. Background Technology

[0002] Forklift counterweights serve to maintain vehicle stability, ensure driving and steering performance, and potentially handle overload conditions. They maintain forklift balance and enhance rear wheel traction, preventing the rear wheels from losing traction or the entire vehicle from tipping over due to loads being lifted by the forks. Currently, forklift counterweights are manufactured by welding individual components together to form a complete counterweight assembly. However, the existing forklift counterweight welding process relies on workers to weld each component individually to form the overall counterweight, which presents problems with production efficiency and high welding difficulty. Summary of the Invention

[0003] To address the issues of low production efficiency and high welding difficulty in existing forklift counterweight welding production, this invention provides a forklift counterweight component, welding positioning fixture, and forklift counterweight welding process.

[0004] The forklift counterweight assembly provided by this invention is achieved through the following technical solution: A forklift counterweight assembly includes a front main plate, a front floor plate, a left-side arc-shaped main plate, a left-side floor plate, a right-side arc-shaped main plate, a right-side floor plate, a rear main lower plate, a rear main upper plate, a left upper floor plate, a right upper floor plate, a left upper top plate, a right upper top plate, a front top plate, and sealing plates A, B, and C detachably connected to the left upper floor plate, the left upper top plate, and their peripheries; sealing plates a, b, and c detachably connected to the right upper floor plate and the right upper top plate; the sealing plates are detachably connected to the rear main lower plate and the rear main upper plate; sealing plate c is detachably connected to the rear main lower plate and the rear main upper plate; the left-side arc-shaped main plate has a positioning hole A; the right-side arc-shaped main plate has a positioning hole B; the left upper floor plate has a positioning hole C; and the right upper floor plate has a positioning hole D.

[0005] Preferably, the rear main lower plate has two mutually spaced positioning circular holes; the rear main lower plate has a rectangular positioning hole A1; the left arc-shaped main plate has rectangular positioning holes B1 and B2; the right arc-shaped main plate has rectangular positioning holes C1 and C2; the left and right arc-shaped main plates are detachably connected to a front support plate and a rear support plate; the left side of the front support plate is fitted into the rectangular positioning hole B1, and the right side is fitted into the rectangular positioning hole C1; the left side of the rear support plate is fitted into the rectangular positioning hole B2, the right side is fitted into the rectangular positioning hole C2, and the rear side is fitted into the rectangular positioning hole A1.

[0006] Preferably, the front main board has an eyelet; the front main board has a plurality of rectangular positioning holes D1; ​​the front side of the front support plate is fitted into the rectangular positioning holes D1; ​​the rear main lower plate has a rectangular positioning hole A2; the front main board has a plurality of rectangular positioning holes D2; a reinforcing rib is detachably connected between the rear main lower plate and the front main board; one end of the reinforcing rib is fitted into the rectangular positioning hole A2, and the other end is fitted into the rectangular positioning hole D2.

[0007] The forklift counterweight assembly in this invention can be pre-assembled using welding positioning fixtures, thereby improving welding efficiency and welding quality.

[0008] The present invention provides a welding positioning fixture for positioning counterweight components of forklifts, which is achieved through the following technical solution: A welding positioning fixture for positioning counterweight components of a forklift includes a base plate, a first middle limiting frame disposed on the base plate for positioning the rear main lower plate and the rear main upper plate, a first left limiting frame for positioning the left arc-shaped main plate, a first right limiting frame for positioning the right arc-shaped main plate, a second left limiting frame for positioning the left upper base plate, a second right limiting frame for positioning the right upper base plate, and a front positioning component for positioning the front base plate, the lower base plate, the left base plate, and the right base plate.

[0009] Welding positioning fixtures with large forklift counterweights can improve welding efficiency and welding quality.

[0010] Preferably, the front positioning assembly includes a left corner support bracket A, a left corner support bracket B, a right corner support bracket A, and a right corner support bracket B. The left base plate is fitted and positioned against the sides of the left corner support bracket A and the left corner support bracket B; the right base plate is fitted and positioned against the sides of the right corner support bracket A and the right corner support bracket B; the front base plate is located between the left base plate and the right base plate; and the lower base plate is located between the left base plate and the right base plate.

[0011] The above technical solution can accurately position the second right limit frame, which is used to position the front base plate, lower base plate, left base plate, and right base plate, thereby improving welding efficiency and welding quality.

[0012] Preferably, a convex plate is provided on the front side of the first middle limiting frame; after positioning, the main lower plate is fitted into the convex plate of the first middle limiting frame to complete the positioning; a left corner seat support bracket C is provided on the top surface of the first middle limiting frame; the sealing plate C is fitted and positioned against the side of the left corner seat support bracket C; a right corner seat support bracket C is provided on the top surface of the first middle limiting frame; the sealing plate C is fitted and positioned against the side of the right corner seat support bracket C; a limiting post is provided on the top surface of the first middle limiting frame; the limiting post is fitted and positioned against the rear side of the rear main upper plate.

[0013] The above technical solution can accurately position the rear main lower plate and the rear main upper plate, thereby improving welding efficiency and welding quality.

[0014] Preferably, the first left limiting frame includes a left support platform disposed on the substrate and a left arc-shaped limiting member disposed on the left support platform; the arc surface of the left arc-shaped limiting member is fitted and positioned with the lower arc surface of the left arc-shaped main board; the left arc-shaped limiting member is provided with a plurality of limiting screws A; the limiting screws A are fitted into the limiting holes of the left arc-shaped main board.

[0015] The above technical solution can further improve the precise positioning of the left-side arc-shaped motherboard, thereby enhancing welding efficiency and quality.

[0016] Preferably, the first right limiting frame includes a right support platform disposed on the substrate and a right arc-shaped limiting member disposed on the right support platform; the arc surface of the right arc-shaped limiting member is fitted and positioned against the lower arc surface of the right arc-shaped main board; the right arc-shaped limiting member is provided with a plurality of limiting screws B; the limiting screws B are fitted into the limiting holes of the right arc-shaped main board.

[0017] The above technical solution can further improve the precise positioning of the right-side arc-shaped motherboard, thereby enhancing welding efficiency and quality.

[0018] Preferably, the top surface of the second left limiting frame is provided with a plurality of limiting screws C; the limiting screws C are fitted into the limiting holes of the upper left base plate; the top surface of the second right limiting frame is provided with a plurality of limiting screws D; the limiting screws D are fitted into the limiting holes of the upper right base plate.

[0019] The above technical solution can accurately position the upper left and upper right base plates, thereby improving welding efficiency and quality.

[0020] The present invention provides a forklift counterweight welding process utilizing welding positioning fixtures, which is achieved through the following technical solution: A welding process for forklift counterweights utilizing welding positioning fixtures includes the following steps: ① Positioning and welding of the left-side arc-shaped main board and the left-side base plate; ② Positioning and welding of the right-side arc-shaped main board and the right-side base plate; ③ Positioning and welding of the bottom plate; ④ Positioning and welding of the front floor plate; ⑤ Positioning and welding of the main lower plate; ⑥ Positioning and welding of the front support plate; ⑦ Positioning and welding of the rear support plate; ⑧ Positioning and welding of the rear main plate; ⑨ Positioning and welding of the upper left base plate; positioning and welding of the upper right base plate; ⑩ Positioning and welding of sealing plate C; Positioning and welding of sealing plate c; ⑪ Positioning and welding of sealing plate A, sealing plate B, and upper left top plate; ⑫ Positioning and welding of sealing plate a, sealing plate b, and upper right top plate; ⑬ Positioning and welding of the front top plate.

[0021] In summary, the present invention has the following advantages: 1. The forklift counterweight assembly in this invention can be pre-assembled using welding positioning fixtures, thereby improving welding efficiency and welding quality.

[0022] 2. This invention uses a welding positioning fixture with a large forklift counterweight to improve welding efficiency and welding quality. Attached Figure Description

[0023] Figure 1 This is a left oblique view of the forklift counterweight assembly in this invention.

[0024] Figure 2 This is a right oblique view of the forklift counterweight assembly in this invention.

[0025] Figure 3 This is a structural diagram showing the forklift counterweight assembly after most of it has been disassembled in this invention.

[0026] Figure 4 This is a structural diagram showing the forklift counterweight assembly after a small portion has been disassembled in this invention.

[0027] Figure 5 This is a structural diagram of the welding positioning fixture in this invention.

[0028] Figure 6 This is an assembly diagram of the welding positioning fixture and the forklift counterweight components, mainly showing the positioning fixture for the rear main lower plate, rear main upper plate, end plate C, and end plate c.

[0029] Figure 7 This is an assembly diagram of the welding positioning fixture and the forklift counterweight components, mainly showing the positioning fixture for the rear main lower plate, rear main upper plate, end plate C, end plate c, left bottom plate, right arc-shaped main plate, left lifting lug, right lifting lug, right bottom plate, left upper bottom plate, right upper bottom plate, end plate C, and end plate c.

[0030] In the diagram, 1. First middle limiting bracket; 10. Base plate; 11. Convex plate; 12. Left corner support bracket C; 13. Right corner support bracket C; 14. Limiting post; 101. Front main board; 1011. Eye hole; 1012. Lampshade component; 1013. Fixing rod; 1014. Reinforcing rib; 1015. Rectangular positioning hole D1; 1016. Rectangular positioning hole D2; 102. Front base plate; 103. Left arc-shaped main board; 1030. Positioning hole A; 1031. Front support piece; 1032. Rear support piece; 1033. Triangular... Reinforcing ribs; 1304, Hole tube; 1035, Triangular reinforcing rib B; 1036, L-shaped reinforcing rib A; 1037, L-shaped reinforcing rib B; 1038, L-shaped reinforcing rib C; 1039, L-shaped reinforcing rib D; 104, Left side base plate; 105, Right side arc-shaped main plate; 1050, Positioning hole B; 106, Right side base plate; 107, Rear main lower plate; 1070, Rear main upper plate; 1071, Positioning round hole; 1072, Rectangular positioning hole A1; 1073, Rectangular positioning hole A2; 1074, Rectangular positioning hole B1; 10 75. Rectangular positioning hole B2; 1076. Rectangular positioning hole C1; 1076. Rectangular positioning hole C2; ​​108. Left lifting lug; 1080. Right lifting lug; 109. Lower base plate; 110. Upper left base plate; 1110. Positioning hole C; 111. Upper right base plate; 1110. Positioning hole D; 112. Upper left top plate; 113. Upper right top plate; 114. Front top plate; 115. Left eye side sealing plate; 116. Right eye side sealing plate; 117. Sealing plate A; 118. Sealing plate B; 119. Sealing plate C; 120. Sealing plate a; 1 21. Sealing plate b; 22. Sealing plate c; 2. First left limiting frame; 21. Left support platform; 22. Left arc-shaped limiting component; 23. Limiting screw A; 3. First right limiting frame; 31. Right support platform; 32. Right arc-shaped limiting component; 33. Limiting screw B; 4. Second left limiting frame; 41. Limiting screw C; 5. Second right limiting frame; 51. Limiting screw D; 6. Front positioning assembly; 61. Left corner seat support bracket A; 62. Left corner seat support bracket B; 63. Right corner seat support bracket A; 64. Right corner seat support bracket B. Detailed Implementation

[0031] To further understand the inventiveness and technical advancements of this invention, the preferred embodiments of this invention will be discussed in detail below with reference to examples and comparative examples.

[0032] Example: See Figure 1 and Figure 2A forklift counterweight assembly includes a front main plate 101, a front base plate 102, a left arc-shaped main plate 103, a left base plate 104, a right arc-shaped main plate 105, a right base plate 106, a rear main lower plate 107, a rear main upper plate 1070, a left lifting lug 108, a right lifting lug 1080, a lower base plate 109, a left upper base plate 110, a right upper base plate 111, a left upper top plate 112, a right upper top plate 113, a front top plate 114, a left eye side sealing plate 115, a right eye side sealing plate 116, sealing plates A117, B118, and C119 detachably connected to the sides of the left upper base plate 110 and the left upper top plate 112, and sealing plates a120, b121, and c122 detachably connected to the sides of the right upper base plate 111 and the right upper top plate 113.

[0033] See Figure 3 and Figure 4 The left-side arc-shaped main board 103 has a positioning hole A1030. The right-side arc-shaped main board 105 has a positioning hole B1050. The upper left base plate 110 has a positioning hole C1100. The upper right base plate 111 has a positioning hole D1110. The rear main lower plate 107 has two spaced-apart positioning circular holes 1071. The rear main lower plate 107 has a rectangular positioning hole A11072. The left-side arc-shaped main board 103 has rectangular positioning holes B11074 and B21075. The right-side arc-shaped main board 105 has rectangular positioning holes C11076 and C21077. The left-side arc-shaped main board 103 and the right-side arc-shaped main board 105 are detachably connected to a front support plate 1031 and a rear support plate 1032. The front support piece 1031 is fitted into the rectangular positioning hole B11074 on the left and the rectangular positioning hole C11076 on the right; the rear support piece 1032 is fitted into the rectangular positioning hole B21075 on the left, the rectangular positioning hole C21077 on the right, and the rectangular positioning hole A11072 on the rear.

[0034] See Figure 3 and Figure 4 The front top plate 114 and the upper left bottom plate 110 have pre-drilled holes for vent pipe installation. The front main plate 101 has eyelets 1011. A lamp cover 1012 for mounting vehicle lights is welded to the inner side of the front main plate 101, and the vehicle lights are mounted on the lamp cover 1012 through the eyelets 1011. A fixing rod 1013 is welded between the lamp cover 1012 and the rear main upper plate 1070. The front main plate 101 has several rectangular positioning holes D11015. The front support piece 1031 is fitted into the rectangular positioning holes D11015 on its front side. The rear main lower plate 107 has rectangular positioning holes A21073. The front main plate 101 has several rectangular positioning holes D21016. A reinforcing rib 1014 is detachably connected between the rear main lower plate 107 and the front main plate 101. One end of the reinforcing rib 1014 is fitted into the rectangular positioning hole A21073, and the other end is fitted into the rectangular positioning hole D21016.

[0035] See Figure 1 and Figure 2 The bottom of the left lifting lug 108 is welded to the left curved main plate 103, and the right side of the left lifting lug 108 is welded to the sealing plate C119 and the rear main upper plate 1070. The bottom of the right lifting lug 1080 is welded to the right curved main plate 105, and the left side of the right lifting lug 1080 is welded to the sealing plate C122 and the rear main upper plate 1070.

[0036] See Figure 3 and Figure 4 A triangular reinforcing rib A1033 is welded to the surface of the rear support plate 1032. The bottom surface of the triangular reinforcing rib A1033 needs to be welded to the surface of the rear support plate 1032, and the side surface of the triangular reinforcing rib A1033 needs to be welded to the surface of the rear main lower plate 107. A perforated tube 1034 is positioned on the front support plate 1031 and the rear support plate 1032. One end of the perforated tube 1034 passes through the front main plate 101, and the other end needs to be welded to the surface of the rear main lower plate 107.

[0037] See Figure 3 and Figure 4 A triangular reinforcing rib B1035 is welded to the surface of the lower base plate 109. The bottom surface of the triangular reinforcing rib B1035 needs to be welded to the surface of the lower base plate 109, and the side surface of the triangular reinforcing rib B1035 needs to be welded to the surface of the rear main lower plate 107. An L-shaped reinforcing rib A1036 is welded to the surface of the lower base plate 109. The bottom surface of the L-shaped reinforcing rib A1036 needs to be welded to the surface of the lower base plate 109, and the side surface of the L-shaped reinforcing rib A1036 needs to be welded to the surface of the rear main lower plate 107. An L-shaped reinforcing rib B1037 is welded to the surface of the lower base plate 109. The bottom surface of the L-shaped reinforcing rib B1037 needs to be welded to the surface of the lower base plate 109, and the side surface of the L-shaped reinforcing rib B1037 needs to be welded to the surface of the front base plate 102. An L-shaped reinforcing rib C1038 is welded to the surface of the lower base plate 109. The bottom surface of the L-shaped reinforcing rib C1038 needs to be welded to the surface of the lower base plate 109, and the side surface of the L-shaped reinforcing rib C1038 needs to be welded to the surface of the left arc-shaped main plate 103. An L-shaped reinforcing rib D1039 is welded to the surface of the lower base plate 109. The bottom surface of the L-shaped reinforcing rib D1039 needs to be welded to the surface of the lower base plate 109, and the side surface of the L-shaped reinforcing rib D1039 needs to be welded to the surface of the right arc-shaped main plate 105.

[0038] Reference Figure 5 and Figure 6A welding positioning fixture for positioning a forklift counterweight assembly includes a base plate 10, a first intermediate limiting frame 1 for positioning a rear main lower plate 107 and a rear main upper plate 1070, which are fixedly connected to the base plate 10 by bolts. A protrusion 11 is provided on the front side of the first intermediate limiting frame 1, and the protrusion 11 of the first intermediate limiting frame 1 is fitted into a positioning circular hole 1071 in the rear main lower plate 107. A left corner seat support bracket C12 is fixedly connected to the top surface of the first intermediate limiting frame 1 by bolts, and a sealing plate C119 is positioned against the side of the left corner seat support bracket C12. A right corner seat support bracket C13 is fixedly connected to the top surface of the first intermediate limiting frame 1 by bolts, and a sealing plate C122 is positioned against the side of the right corner seat support bracket C13. A limiting post 14 is welded to the top surface of the first intermediate limiting frame 1, and the limiting post 14 is positioned against the rear side of the rear main upper plate 1070.

[0039] Reference Figure 5 and Figure 7 The welding positioning fixture also includes a first left limiting frame 2 for positioning the left-side arc-shaped main board 103. The first left limiting frame 2 includes a left support platform 21 fixedly connected to the base plate 10 by bolts, and a left arc-shaped limiting member 22 fixedly connected to the left support platform 21. The arc surface of the left arc-shaped limiting member 22 fits against the lower arc surface of the left-side arc-shaped main board 103 to achieve positioning of the left-side arc-shaped main board 103. Several limiting screws A23 are fixedly connected to the left arc-shaped limiting member 22. The limiting screws A23 are fitted into the positioning holes A1030 of the left-side arc-shaped main board 103 to achieve precise positioning of the left-side arc-shaped main board 103.

[0040] Reference Figure 5 and Figure 7 It also includes a first right limiting bracket 3 for positioning the right-side arc-shaped motherboard 105. The first right limiting bracket 3 includes a right support platform 31 fixedly connected to the base plate 10 by bolts, and a right arc-shaped limiting member 32 fixedly connected to the right support platform 31. The arc surface of the right arc-shaped limiting member 32 fits against the lower arc surface of the right-side arc-shaped motherboard 105 to achieve positioning of the right-side arc-shaped motherboard 105. Several limiting screws B33 are fixedly connected to the right arc-shaped limiting member 32. The limiting screws B33 are fitted into the limiting holes B1050 of the right-side arc-shaped motherboard 105 to achieve precise positioning of the right-side arc-shaped motherboard 105.

[0041] Reference Figure 5 and Figure 7It also includes a second left limiting frame 4 and a second right limiting frame 5, which are fixedly connected to the substrate 10 by bolts. The top surface of the second left limiting frame 4 is fixedly connected with several limiting screws C41, which are fitted into the limiting holes C1100 of the upper left base plate 110, enabling precise positioning of the upper left base plate 110 and improving welding efficiency and quality. The top surface of the second right limiting frame 5 is fixedly connected with several limiting screws D51, which are fitted into the limiting holes D1110 of the upper right base plate 111, enabling precise positioning of the upper right base plate 111 and improving welding efficiency and quality.

[0042] Reference Figure 5 and Figure 7 It also includes a front positioning assembly 6, which is bolted to the base plate 10 and used for positioning the front base plate 102, lower base plate 109, left base plate 104, and right base plate 106. The front positioning assembly 6 includes left corner support brackets A61, B62, A63, and B64, which are bolted to the base plate 10. Left corner support brackets A61 and B62 are located to the right of the first left limiting frame 2. Right corner support brackets A63 and B64 are located to the left of the first right limiting frame 3.

[0043] Reference Figure 5 and Figure 7 The left base plate 104 is fitted with the sides of the left corner support brackets A61 and B62 to achieve precise positioning of the left base plate 104. The right base plate 106 is fitted with the sides of the right corner support brackets A63 and B64 to achieve precise positioning of the right base plate 106.

[0044] Reference Figure 5 and Figure 7 The front base plate 102 is located between the left base plate 104 and the right base plate 106. One side of the front base plate 102 is joined to the bottom of the left base plate 104 with a mortise and tenon structure, and the other side of the front base plate 102 is joined to the bottom of the right base plate 106 with a mortise and tenon structure, so as to achieve precise positioning of the front base plate 102.

[0045] Reference Figure 5 and Figure 7 The lower base plate 109 is located between the left base plate 104 and the right base plate 106. The left side of the lower base plate 109 is joined to the bottom of the left base plate 104 with a mortise and tenon structure, the right side of the lower base plate 109 is joined to the bottom of the right base plate 106 with a mortise and tenon structure, and the rear side of the lower base plate 109 is joined to the bottom of the rear main lower plate 107 with a mortise and tenon structure, thus achieving precise positioning of the lower base plate 109.

[0046] A welding process for forklift counterweights utilizing welding positioning fixtures includes the following steps: ① First, the positioning hole A1030 of the left arc-shaped main board 103 is fitted into the limiting screw A23 of the left arc-shaped limiting part 22 to complete the positioning and installation of the left arc-shaped main board 103. Then, the left base plate 104 is attached to the side of the left corner support bracket A61 and the left corner support bracket B62 to achieve precise positioning of the left base plate 104. Finally, the joint between the left arc-shaped main board 103 and the left base plate 104 is welded. ② The positioning hole B1050 of the right arc-shaped main board 105 is fitted into the limiting screw B23 of the right arc-shaped limiting component 32 to complete the positioning and installation of the right arc-shaped main board 105. The right base plate 106 is then fitted with the side of the right corner support bracket A63 and the right corner support bracket B64 to achieve precise positioning of the right base plate 106. The joint between the right arc-shaped main board 105 and the right base plate 106 is then welded. ③ One side of the lower base plate 109 is joined to the bottom of the left base plate 104 with a mortise and tenon structure, and the other side of the lower base plate 109 is joined to the bottom of the right base plate 106 with a mortise and tenon structure. The rear side of the lower base plate 109 is joined to the bottom of the rear main lower plate 107 with a mortise and tenon structure. For the precise positioning of the lower base plate 109, welding is performed at the joints between the lower base plate 109 and the left base plate 104, the lower base plate 109 and the right base plate 106, and the lower base plate 109 and the rear main lower plate 107. ④ One side of the front base plate 102 is joined to the bottom of the left base plate 104 with a mortise and tenon structure, and the other side of the front base plate 102 is joined to the bottom of the right base plate 106 with a mortise and tenon structure. For precise positioning of the front base plate 102, welding is performed at the joints between the front base plate 102 and the left base plate 104, the joints between the front base plate 102 and the right base plate 106, and the joints between the front base plate 102 and the lower base plate 109. ⑤ The convex plate 11 of the first middle limiting frame 1 is fitted into the positioning round hole 1071 of the main lower plate 107 to position and install the main lower plate 107, weld the splice of the rear main lower plate 107 and the lower base plate 109, weld the splice of the rear main lower plate 107 with the left arc-shaped main plate 103 and the left base plate 104, and weld the splice of the rear main lower plate 107 with the right arc-shaped main plate 105 and the right base plate 106. ⑥ The left side of the front support piece 1031 is fitted into the rectangular positioning hole B11074 of the left arc-shaped main board 103, and the right side of the front support piece 1031 is fitted into the rectangular positioning hole C11076 of the right arc-shaped main board 105, so as to accurately position the front support piece 1031 between the left arc-shaped main board 103 and the right arc-shaped main board 105. Welding is then performed at the splicing points of the front support piece 1031 and the left arc-shaped main board 103, and the splicing points of the front support piece 1031 and the right arc-shaped main board 105, respectively. ⑦ The left side of the rear support piece 1032 is fitted into the rectangular positioning hole B21075 of the left arc-shaped main board 103, the right side of the rear support piece 1032 is fitted into the rectangular positioning hole C21077 of the right arc-shaped main board 105, and the rear side of the rear support piece 1032 is fitted into the rectangular positioning hole A11072 of the rear main lower plate 107, so as to accurately position the rear support piece 10321 between the left arc-shaped main board 103, the right arc-shaped main board 105, and the rear main lower plate 107; welding is performed at the splicing points of the rear support piece 1032 and the rear main lower plate 107, the splicing points of the rear support piece 1032 and the left arc-shaped main board 103, and the splicing points of the rear support piece 1032 and the right arc-shaped main board 105, respectively. ⑧ The bottom surface of the triangular reinforcing rib A1033 is welded to the surface of the rear main lower plate 107, and the side surface of the triangular reinforcing rib A1033 is welded to the surface of the rear support plate 1032; then the perforated tube 1034 is fitted onto the convex plate 11 for positioning, and the joint between the perforated tube 1034 and the rear main lower plate 107 is welded to ensure that the perforated tube 1034 is precisely welded to the rear main lower plate 107; the perforated tube 1034 is placed on the front support plate 1031 and the rear support plate 1032, and the contact points between the perforated tube 1034 and the front support plate 1031 and the rear support plate 1032 are welded. ⑨ Weld the bottom surface of the triangular reinforcing rib B1035 to the main lower plate 107, and weld the side surface of the triangular reinforcing rib B1035 to the lower base plate 109; then weld the bottom surface of the L-shaped reinforcing rib A1036 to the main lower plate 107, and weld the side surface of the L-shaped reinforcing rib A1036 to the lower base plate 109; then weld the bottom surface of the L-shaped reinforcing rib B1037 to the front base plate 102, and weld its side surface to the lower base plate 109; then weld the bottom surface of the L-shaped reinforcing rib C1038 to the front base plate 102, and weld its side surface to the left arc-shaped main plate 103; then weld the bottom surface of the L-shaped reinforcing rib D1039 to the front base plate 102, and weld its side surface to the right arc-shaped main plate 106; ⑩ One end of the reinforcing rib 1014 is fitted into the rectangular positioning hole A21073 of the rear main lower plate 107. ， Weld the reinforcing rib 1014 to the rear main lower plate 107 at the joint. Weld one end of the fixing rod 1013 to the rear main lower plate 107 and the other end of the fixing rod 1013 to the lampshade 1012. The fixing position of the lampshade 1012 is located at the eye hole 1011 of the front main plate 101. Then, the front main plate 101 is positioned and installed. The ground of the front main plate 101 is in contact with the surface of the left arc-shaped main plate 103, the left bottom plate 104, the right arc-shaped main plate 105, and the right bottom plate 106. The other end of the reinforcing rib 1014 is fitted into the rectangular positioning hole D21016 of the front main plate 101. Weld the joint between the front main plate 101 and the left arc-shaped main plate 103, the left bottom plate 104, the right arc-shaped main plate 105, and the right bottom plate 106. Then, weld the joint between the reinforcing rib 1014 and the front main plate 101. ⑪ The limiting post 14 fits against the rear side of the rear main upper plate 1070 to achieve precise positioning of the rear main upper plate 1070 and weld the splice between the main upper plate 1070 and the main lower plate 107. ⑫ The limiting screw C41 of the second left limiting frame 4 is fitted into the limiting hole C1100 of the upper left base plate 110 to accurately position the upper left base plate 110 and weld the splice of the upper left base plate 110 and the left arc-shaped main plate 103. The limiting screw D51 of the second right limiting frame 5 is fitted into the limiting hole D1110 of the upper right base plate 111 to accurately position the upper right base plate 111 and weld the splice of the upper right base plate 111 and the right arc-shaped main plate 105. ⑬ The sealing plate C119 is attached to the side of the left corner support bracket C12, and the sealing plate C119 is mortised and tenoned with the upper left base plate 110, the lower rear main plate 107, and the upper rear main plate 1070. The sealing plate C119 is precisely positioned, and the joints between the sealing plate C119 and the lower rear main plate 107, the upper rear main plate 1070, and the upper left base plate 110 are welded. The sealing plate C122 is attached to the side of the right corner support bracket C13, and the sealing plate C122 is mortised and tenoned with the left and right base plates 111, the lower rear main plate 107, and the upper rear main plate 1070. The sealing plate C122 is precisely positioned, and the joints between the sealing plate C122 and the lower rear main plate 107, the upper rear main plate 1070, and the left and right base plates 111 are welded. ⑭ Position and install the left lifting lug 108, and weld the joint between the left lifting lug 108 and the left arc-shaped main board 103, and the joint between the left lifting lug 108 and the upper left base plate 110; position and install the right lifting lug 1080, and weld the joint between the right lifting lug 1080 and the right arc-shaped main board 105, and the joint between the left lifting lug 108 and the upper right base plate 111; ⑮ The sealing plates A117 and B118 are tenon-and-mortise connected to the periphery of the upper left bottom plate 110. The joint between the upper left bottom plate 110 and the sealing plates A117 and B118 is welded. The upper left top plate 112 is tenon-and-mortise fitted into the sealing plates A117, B118 and C119. The joint between the upper left top plate 112 and the sealing plates A117, B118 and C119 is welded. ⑯ Positioning of the left eye side sealing plate 115: One side of the left eye side sealing plate 115 is spliced ​​with the sealing plate A117, the other side of the left eye side sealing plate 115 is spliced ​​with the front main board 101, and the bottom of the left eye side sealing plate 115 is spliced ​​with the left arc-shaped main board 103. Welding is performed at the splicing points of the left eye side sealing plate 115 with the sealing plate A117, the left arc-shaped main board 103, and the front main board 101. ⑰ The sealing plates a120 and b121 are tenon-and ... ⑱ Positioning of the right eye side sealing plate 116: One side of the right eye side sealing plate 116 is spliced ​​with the sealing plate a120, the other side of the right eye side sealing plate is spliced ​​with the front main board 101, and the bottom of the right eye side sealing plate 116 is spliced ​​with the right arc-shaped main board 105. Welding is performed at the splicing points of the right eye side sealing plate 116 with the sealing plate a120, the right arc-shaped main board 105, and the front main board 101. ⑲ Positioning of front top plate 114: The bottom surface of the front top plate 114 is spliced ​​with the bottom surface of the front main plate 101, the left eye side sealing plate 115, and the upper surface of the right eye side sealing plate 116. The splicing points of the front top plate 114 with the front main plate 101, the left eye side sealing plate 115, and the right eye side sealing plate 116 are welded to obtain the forklift counterweight.

[0047] In summary, the forklift counterweight assembly of the present invention can be pre-assembled using welding positioning fixtures to accurately position the forklift counterweight assembly, thereby improving the welding efficiency and welding quality of the forklift counterweight welding process.

[0048] It should be noted that this specific embodiment is merely an explanation of the technical solution of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A forklift counterweight assembly, characterized by: The application relates to a cabinet, which comprises a front main plate (101), a front bottom plate (102), a left side arc-shaped main plate (103), a left side bottom plate (104), a right side arc-shaped main plate (105), a right side bottom plate (106), a rear main lower plate (107), a rear main upper plate (1070), a left upper bottom plate (110), a right upper bottom plate (111), a left upper top plate (112), a right upper top plate (113), a front top plate (114), a seal plate A (117) detachably connected to the left upper bottom plate (110), the left upper top plate (112) and the peripheral side, a seal plate B (118), a seal plate C (119), a seal plate a (120) detachably connected to the right upper bottom plate (111), the right upper top plate (113) and the peripheral side, a seal plate b (121) and a seal plate c (122).

2. A fork truck weight assembly as set forth in claim 1, wherein: The rear main lower plate (107) is provided with two mutually spaced positioning round holes (1071); the rear main lower plate (107) is provided with a rectangular positioning hole A1 (1072); the left side arc-shaped main plate (103) is provided with a rectangular positioning hole B1 (1074) and a rectangular positioning hole B2 (1075); the right side arc-shaped main plate (105) is provided with a rectangular positioning hole C1 (1076) and a rectangular positioning hole C2 (1077); the left side arc-shaped main plate (103) and the right side arc-shaped main plate (105) are detachably connected with a front supporting piece (1031) and a rear supporting piece (1032); the front supporting piece (1031) is fitted on the left side of the rectangular positioning hole B1 (1074) and on the right side of the rectangular positioning hole C1 (1076); the rear supporting piece (1032) is fitted on the left side of the rectangular positioning hole B2 (1075), on the right side of the rectangular positioning hole C2 (1077) and on the rear side of the rectangular positioning hole A1 (1072).

3. A fork truck weight assembly as set forth in claim 2, wherein: The front main plate (101) is provided with an eye hole (1011); the front main plate (101) is provided with a plurality of rectangular positioning holes D1 (1015); the front supporting piece (1031) is fitted on the front side of the rectangular positioning hole D1 (1015); the rear main lower plate (107) is provided with a rectangular positioning hole A2 (1073); the front main plate (101) is provided with a plurality of rectangular positioning holes D2 (1016); the rear main lower plate (107) and the front main plate (101) are detachably connected with a reinforcing rib (1014); one end of the reinforcing rib (1014) is fitted in the rectangular positioning hole A2 (1073) and the other end is fitted in the rectangular positioning hole D2 (1016).

4. A welding fixture for positioning the fork lift counterweight assembly of any one of claims 1-3, characterized by: The utility model relates to a positioning assembly for a cabinet, comprising a base plate (10), a first middle limiting frame (1) arranged on the base plate (10) for positioning a rear main lower plate (107), a rear main upper plate (1070), a first left limiting frame (2) arranged on the base plate (10) for positioning a left arc-shaped main plate (103), a first right limiting frame (3) arranged on the base plate (10) for positioning a right arc-shaped main plate (105), a second left limiting frame (4) arranged on the base plate (10) for positioning a left upper bottom plate (110), a second right limiting frame (5) arranged on the base plate (10) for positioning a right upper bottom plate (111), and a front positioning assembly (6) arranged on the base plate (10) for positioning a front bottom plate (102), a lower bottom plate (109), a left side bottom plate (104), and a right side bottom plate (106).

5. A welding fixture as defined in claim 4, wherein: The first middle limiting frame (1) is provided with a convex disc (11) on the front side, the positioning rear main lower plate (107) is embedded in the convex disc (11) of the first middle limiting frame (1) to complete positioning, the first middle limiting frame (1) is provided with a left corner seat support bracket C (12) on the top surface, the cover plate C (119) is positioned in close contact with the side of the left corner seat support bracket C (12), the first middle limiting frame (1) is provided with a right corner seat support bracket C (13) on the top surface, the cover plate C (122) is positioned in close contact with the side of the right corner seat support bracket C (13), and the first middle limiting frame (1) is provided with a limiting column (14) on the top surface.

6. A welding fixture as defined in claim 4, wherein: The first left limiting frame (2) comprises a left support platform (21) arranged on the base plate (10) and a left arc surface limiting piece (22) arranged on the left support platform (21), the arc surface of the left arc surface limiting piece (22) is positioned in close contact with the lower arc surface of the left arc-shaped main plate (103), the left arc surface limiting piece (22) is provided with a plurality of limiting screws A (23), the limiting screws A (23) are embedded in the positioning holes A (1030) of the left arc-shaped main plate (103), the first right limiting frame (3) comprises a right support platform (31) arranged on the base plate (10) and a right arc surface limiting piece (32) arranged on the right support platform (31), the arc surface of the right arc surface limiting piece (32) is positioned in close contact with the lower arc surface of the right arc-shaped main plate (105), and the right arc surface limiting piece (32) is provided with a plurality of limiting screws B (33).

7. The welding fixture of claim 4, wherein: The second left limiting frame (4) is provided with a plurality of limiting screws C (41) on the top surface, the limiting screws C (41) are embedded in the positioning holes C (1100) of the left upper bottom plate (110), the second right limiting frame (5) is provided with a plurality of limiting screws D (51) on the top surface, and the limiting screws D (51) are embedded in the positioning holes D (1110) of the right upper bottom plate (111).

8. The welding fixture of claim 4, wherein: The first middle limiting frame (1) is provided with a convex disc (11) on the front side; the convex disc (11) of the first middle limiting frame (1) is embedded in the positioning round hole (1071) of the rear main lower plate (107); the top surface of the first middle limiting frame (1) is provided with a left corner seat support bracket C (12); the side surface of the sealing plate C (119) is positioned and attached to the left corner seat support bracket C (12); the top surface of the first middle limiting frame (1) is provided with a right corner seat support bracket C (13); the side surface of the sealing plate C (122) is positioned and attached to the right corner seat support bracket C (13); the top surface of the first middle limiting frame (1) is provided with a limiting column (14), and the rear side surface of the limiting column (14) is positioned and attached to the rear main upper plate (1070).

9. The welding fixture of claim 4, wherein: The front positioning assembly (6) comprises a left corner seat support bracket A (61), a left corner seat support bracket B (62), a right corner seat support bracket A (63), and a right corner seat support bracket B (64); the side surface of the left corner seat support bracket A (61) and the left corner seat support bracket B (62) is positioned and attached to the left side bottom plate (104); the side surface of the right corner seat support bracket A (63) and the right corner seat support bracket B (64) is positioned and attached to the right side bottom plate (106); the front bottom plate (102) is located between the left side bottom plate (104) and the right side bottom plate (106); and the lower bottom plate (109) is located between the left side bottom plate (104) and the right side bottom plate (106).

10. A forklift counterweight welding process utilizing the welding fixture of any of claims 4-9, characterized by: The method comprises the following steps: ①Positioning and welding of the left side arc-shaped main plate (103) and the left side bottom plate (104); ②Positioning and welding of the right side arc-shaped main plate (105) and the right side bottom plate (106); ③Positioning and welding of the lower bottom plate (109); ④Positioning and welding of the front bottom plate (102); ⑤Positioning and welding of the main lower plate (107); ⑥Positioning and welding of the front support sheet (1031); ⑦Positioning and welding of the rear support sheet (1032); ⑧Positioning and welding of the rear main upper plate (1070); ⑨Positioning and welding of the left upper bottom plate (110) and the right upper bottom plate (111); ⑩Positioning and welding of the sealing plate C (119) and the sealing plate C (122); ⑪Positioning and welding of the sealing plate A (117), the sealing plate B (118), and the left upper top plate (112); ⑫Positioning and welding of the sealing plate a (120), the sealing plate b (121), and the right upper top plate (113); ⑬Positioning and welding of the front top plate (114).

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