Automatic assembly tool for boom chassis

Abstract

The invention discloses an automatic assembly tool for a boom chassis, and belongs to the technical field of boom chassis assembly, the automatic assembly tool comprises a base assembly, the base assembly is cross-shaped when overlooked, the middle part of the base assembly is fixedly connected with a bottom plate clamping and positioning assembly, and one end of the base assembly is fixedly connected with a front table clamping and positioning assembly; one side of the base assembly is fixedly connected with a left side plate clamping and positioning assembly, and the other side of the base assembly is fixedly connected with a right side plate clamping and positioning assembly. Moving, clamping and positioning parts of the bottom plate clamping and positioning assembly, the foreground clamping and positioning assembly, the background clamping and positioning assembly, the left side plate clamping and positioning assembly and the right side plate clamping and positioning assembly are all provided with encoders and proximity switches. The method has the advantages of being high in assembly efficiency, safe and reliable.

Description

Technical Field

[0001] The invention relates to the technical field of arm truck chassis assembly, in particular to an automatic arm truck chassis assembly tool. Background Art

[0002] In recent years, the construction machinery industry has developed rapidly, and the degree of automation in welding production has also been greatly improved.

[0003] As the name suggests, assembly tooling is to combine multiple parts or components into a whole through clamping.

[0004] At present, most of the arm truck chassis assembly tooling in the industry is still manual mechanical tooling, which requires manual operation, is cumbersome to operate, has poor compatibility and low production efficiency. Summary of the invention

[0005] The present invention aims to solve the technical problems mentioned in the above background technology, and provides an automatic assembly tool for a boom truck chassis, which can realize the assembly and clamping of workpieces of multiple models, and the clamping and assembly of each component are automatic, with good compatibility, high assembly efficiency, safety and reliability.

[0006] The technical solution provided by the present invention is: an automatic assembly tool for an arm truck chassis, including a base assembly, which is cross-shaped when viewed from above, a bottom plate clamping and positioning assembly is fixedly connected to the middle of the base assembly, one end of the base assembly is fixedly connected to the front-end clamping and positioning assembly, and the other end is fixedly connected to the back-end clamping and positioning assembly, one side of the base assembly is fixedly connected to the left-side plate clamping and positioning assembly, and the other side is fixedly connected to the right-side plate clamping and positioning assembly, and encoders and proximity switches are installed on the moving, clamping and positioning parts of the bottom plate clamping and positioning assembly, the front-end clamping and positioning assembly, the back-end clamping and positioning assembly, the left-side plate clamping and positioning assembly and the right-side plate clamping and positioning assembly.

[0007] In some embodiments, the front desk clamping and positioning assembly includes a front desk bottom bracket fixed to the base assembly, the upper end of the front desk bottom bracket is fixedly connected to the front desk servo moving assembly, the upper end of the front desk servo moving assembly is movably connected to the front desk slide, one end of the front desk slide is fixedly connected to the front desk backrest assembly, and the other end is fixedly connected to the front desk hydraulic jacking assembly, and a front desk hydraulic clamping assembly is also provided between the front desk backrest assembly and the front desk hydraulic jacking assembly, the front desk hydraulic clamping assembly is transversely fixed on the front desk slide, and the upper end of the front desk hydraulic clamping assembly is movably connected to the front desk hydraulic clamping plate I and the front desk hydraulic clamping plate II on both sides.

[0008] In some embodiments, the front desk servo moving assembly drives the front desk slide to move horizontally, the front desk hydraulic clamping assembly uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the front desk hydraulic clamping plate I and the front desk hydraulic clamping plate II connected to the nut to perform centering clamping movement, and the hydraulic jacking assembly uses a hydraulic cylinder to perform horizontal telescopic movement, thereby tightening the front desk to the front desk backrest assembly.

[0009] In some embodiments, the background clamping and positioning assembly includes a background servo moving assembly fixedly connected to the base assembly, the upper end of the background servo moving assembly is movably connected to the background servo centering moving assembly, the upper ends of the background servo centering moving assembly are movably connected to the background servo lifting assembly I and the background servo lifting assembly II, the sides of the background servo lifting assembly I and the background servo lifting assembly II that are close to each other are movably connected to the background hydraulic clamping assembly I and the background hydraulic clamping assembly II respectively, the upper end of the background hydraulic clamping assembly I is movably connected to the background clamping plate I and the background clamping plate II, and the upper end of the background hydraulic clamping assembly II is movably connected to the background clamping plate III and the background clamping plate IV.

[0010] In some embodiments, the left side plate clamping and positioning assembly includes a left bottom bracket fixedly connected to the base assembly, the upper end of the left bottom bracket is horizontally slidably connected to a left hydraulic movable slide assembly, the upper end of the left hydraulic movable slide assembly, the two sides close to the center of the base assembly are respectively fixedly connected to a left magnetic clamping assembly I and a left magnetic clamping assembly II, the left hydraulic movable slide assembly is connected to a left movable hydraulic cylinder away from the center of the base assembly, and the left hydraulic movable slide assembly can be horizontally moved on the left bottom bracket by the left movable hydraulic cylinder; The left magnetic clamping assembly II includes a left vertical plate, which is fixedly connected to the left hydraulic movable slide assembly, one side of the left vertical plate is fixedly connected to the left magnetic device, and the other side is connected to the left pressure block through a vertical guide rail and a slider, and one side of the left pressure block is connected to a vertical left downward pressure cylinder. The left magnetic clamping assembly I has the same structure as the left magnetic clamping assembly II; The right side plate clamping and positioning assembly has the same structure as the left side plate clamping and positioning assembly, and the positions of the right side plate clamping and positioning assembly and the left side plate clamping and positioning assembly are relatively arranged.

[0011] In some embodiments, the base plate clamping and positioning assembly includes a base plate bottom bracket fixedly connected to the base assembly, the four upper corners of the base plate bottom bracket are fixedly connected to a servo electric cylinder adjustment assembly, the middle of the upper end of the base plate bottom bracket is fixedly connected to a base plate hydraulic inner circle centering assembly, and one side of the upper end of the base plate bottom bracket is fixedly connected to a base plate hydraulic tightening assembly.

[0012] In some embodiments, the servo electric cylinder adjustment assembly includes a vertically mounted electric cylinder and a pad installed on the top of the electric cylinder telescopic rod. The electric cylinder drives the pad to move up and down, keeping the pads at the four corners at the same suitable height, thereby keeping the base plate level.

[0013] In some embodiments, the bottom plate hydraulic inner circle centering assembly uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate centering slide I and the bottom plate centering slide II connected to the nut to perform reverse inward supporting and tightening movement. The upper ends of the bottom plate centering slide I and the bottom plate centering slide II are symmetrically installed with positioning columns I and positioning columns II. The positioning columns I and II move away from each other to position the bottom plate with a circular hollow space mounted on the positioning columns I and II.

[0014] In some embodiments, the bottom plate hydraulic tightening assembly uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate tightening slide connected to the nut to move horizontally. A positioning block is fixedly connected to the bottom plate tightening slide. The bottom plate tightening slide drives the positioning block to move horizontally so that the positioning block presses against the side of the bottom plate.

[0015] In some embodiments, the base assembly includes a base bracket and an adjustment wire assembly. There are multiple adjustment wire assemblies that are evenly distributed and fixedly connected to the periphery of the base bracket and are used to adjust the horizontality of the base bracket. The base bracket is provided with multiple screw holes and pin holes.

[0016] Compared with the prior art, the advantages of the present invention are: 1. The automatic assembly tooling realizes the automated production of boom truck chassis workpieces through fully automatic clamping, automatic and precise positioning, and cooperates with upper and lower material trusses and automatic welding equipment, thereby improving product production quality and production efficiency; 2. The moving, clamping and positioning parts of each component are integrated with encoders and proximity switches to ensure high precision when assembling each component; 3. Each clamping component adopts hydraulic clamping with a large clamping load, ensuring that the assembly tooling can be compatible with workpieces with larger loads.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the automatic assembly tooling structure of the boom truck chassis according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the front clamping and positioning assembly shown in ; Figure 3 yes Figure 1 The structural diagram of the backstage clamping and positioning assembly shown in ; Figure 4 yes Figure 1 A structural schematic diagram of the left side plate clamping and positioning assembly shown in ; Figure 5 yes Figure 1 A schematic diagram of the structure of the right side plate clamping and positioning assembly shown in ; Figure 6 yes Figure 1 A schematic diagram of the structure of the base plate clamping and positioning assembly shown in ; Figure 7 yes Figure 1 A schematic diagram of the structure of the base assembly shown in ; Figure 8 It is a schematic diagram of the automatic assembly of the boom truck chassis of the embodiment of the present invention.

[0019] In the attached drawings: 1. front panel clamping and positioning assembly; 2. back panel clamping and positioning assembly; 3. left panel clamping and positioning assembly; 4. right panel clamping and positioning assembly; 5. bottom panel clamping and positioning assembly; 6. base assembly; 11. Front desk bottom bracket; 12. Front desk servo moving assembly; 13. Front desk hydraulic clamping assembly; 131. Front desk hydraulic clamping support plate I; 132. Front desk hydraulic clamping support plate II; 14. Front desk support assembly; 15. Front desk hydraulic top tightening assembly; 16. Front desk slide; 21. Backstage servo moving assembly; 22. Backstage servo centering moving assembly; 23. Backstage servo lifting assembly Ⅰ; 24. Backstage servo lifting assembly Ⅱ; 25. Backstage hydraulic clamping assembly Ⅰ; 251. Backstage clamping plate Ⅰ; 252. Backstage clamping plate Ⅱ; 26. Backstage hydraulic clamping assembly Ⅱ; 261. Backstage clamping plate Ⅲ; 262. Backstage clamping plate Ⅳ; 31. Left bottom bracket; 32. Left hydraulic movable slide assembly; 33. Left magnetic clamping assembly I; 34. Left magnetic clamping assembly II; 341. Left magnetic device; 342. Left pressure block; 343. Left downward pressure cylinder; 344. Left cushion block; 35. Left movable hydraulic cylinder; 41. Right bottom bracket; 42. Right hydraulic movable slide assembly; 43. Right magnetic clamping assembly I; 44. Right magnetic clamping assembly II; 45. Right movable hydraulic cylinder; 51. Bottom bracket of bottom plate; 52. Hydraulic inner circle centering assembly of bottom plate; 521. Centering slide plate I; 522. Centering slide plate II; 523. Positioning column I; 524. Positioning column II; 53. Hydraulic tightening assembly of bottom plate; 531. Tightening slide plate of bottom plate; 532. Positioning block; 54. Servo electric cylinder adjustment assembly; 541. Telescopic electric cylinder; 542. Cushion block; 61. Base bracket; 62. Adjustment wire assembly. DETAILED DESCRIPTION

[0020] The present invention is described in further detail below.

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0022] Combination Figure 1 As shown, an automatic assembly tool for an arm truck chassis includes a front-end clamping and positioning component 1, a back-end clamping and positioning component 2, a left-side plate clamping and positioning component 3, a right-side plate clamping and positioning component 4, a bottom plate clamping and positioning component 5 and a base component 6; encoders and proximity switches are installed on the moving, clamping and positioning parts of the bottom plate clamping and positioning component 5, the front-end clamping and positioning component 1, the back-end clamping and positioning component 2, the left-side plate clamping and positioning component 3 and the right-side plate clamping and positioning component 4 to ensure high precision when assembling each component.

[0023] Combination Figure 6 As shown, the base assembly 6 includes a base bracket 61 and an adjusting wire assembly 62. There are twelve adjusting wire assemblies 62, which are evenly distributed and fixedly connected to the periphery of the base bracket 61. A threaded hole is provided on the ear plate of the adjusting wire assembly 62, and a screw is installed in the threaded hole. The horizontality of the base bracket 61 can be adjusted by rotating the screw.

[0024] The base bracket 61 is provided with multiple threaded holes and pin holes. The threaded holes are used to fix the connection of each clamping and positioning component, and the pin holes are used to position each clamping and positioning component. When viewed from a top perspective, the base bracket 61 is cross-shaped, the middle part is connected to the bottom bracket 51 of the base plate by screws, the front and rear ends are respectively connected to the front bottom bracket 11 and the back servo moving component 21 by screws, and the left and right ends are respectively connected to the left bottom bracket 31 and the right bottom bracket 41 by screws.

[0025] Combination Figure 2 As shown, the front desk clamping and positioning assembly 1 includes a front desk bottom bracket 11 fixed with screws to the base bracket 61, the upper end of the front desk bottom bracket 11 is screwed to fix the front desk servo moving assembly 12, the front desk servo moving assembly 12 is connected to the front desk slide 16 through a screw rod and a nut, one end of the front desk slide 16 is screwed to fix the front desk backrest assembly 14, and the other end is screwed to fix the front desk hydraulic jacking assembly 15, the front desk backrest assembly 14 and the front desk hydraulic jacking assembly 15 are screwed to fix the front desk hydraulic clamping assembly 13, the front desk hydraulic clamping assembly 13 is transversely fixed on the front desk slide 16, and the upper ends of the front desk hydraulic clamping assembly 13 are connected to the front desk hydraulic clamping plate Ⅰ131 and the front desk hydraulic clamping plate Ⅱ132 through screw rods and nuts on both sides.

[0026] The front servo moving assembly 12 utilizes a servo motor to drive the screw to rotate, thereby driving the nut on the screw and the front slide 16 connected to the nut to move horizontally, thereby driving the front backing assembly 14, the front hydraulic jacking assembly 15 and the front hydraulic clamping assembly 13 to move as a whole.

[0027] The front hydraulic clamping assembly 13 uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the front hydraulic clamping plate I 131 and the front hydraulic clamping plate II 132 connected to the nut to perform centering clamping movement.

[0028] The hydraulic jacking assembly uses a hydraulic cylinder to perform horizontal telescopic movement, thereby jacking the front desk onto the front desk backing assembly 14 .

[0029] In specific implementation, combined with Figure 8 As shown, the truss gripper grabs the front desk component from the rack and places it on the front desk hydraulic clamping component 13 in the front desk clamping and positioning component 1. The hydraulic motor of the front desk hydraulic clamping component 13 drives the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the front desk hydraulic clamping plate Ⅰ131 and the front desk hydraulic clamping plate Ⅱ132 connected to the nut to perform centering clamping movement. At this time, the width direction positioning of the front desk component is completed; then, the front desk hydraulic pressing component 15 presses the front desk component tightly and presses it against the front backing component 14. At this time, the clamping and positioning of the front desk component is completed.

[0030] Combination Figure 3 As shown, the backstage clamping and positioning assembly 2 includes a backstage servo moving assembly 21 fixedly connected to the base bracket 61, the backstage servo moving assembly 21 is connected to the backstage servo centering moving assembly 22 through a screw rod, a nut, and a slide plate, the backstage servo centering moving assembly 22 can move horizontally forward and backward, and the upper ends of the backstage servo centering moving assembly 22 are also connected to the backstage servo lifting assembly I 23 and the backstage servo lifting assembly II 24 through screw rods and nuts. The backstage servo lifting assembly I 23 and the backstage servo lifting assembly II 24 can move horizontally left and right on the backstage servo centering moving assembly 22, and the right side of the backstage servo lifting assembly I 23 is connected to the backstage servo centering moving assembly 22 through a vertical screw rod and a nut. The mother connects the backstage hydraulic clamping assembly Ⅰ25, and the left side of the backstage servo lifting assembly Ⅱ24 is connected to the backstage hydraulic clamping assembly Ⅱ26 through a vertical screw rod and a nut. The backstage hydraulic clamping assembly Ⅰ25 and the backstage hydraulic clamping assembly Ⅱ26 can move up and down under the drive of the servo motor. The backstage hydraulic clamping assembly Ⅰ25 and the backstage hydraulic clamping assembly Ⅱ26 have the same structure as the frontstage hydraulic clamping assembly 13. The upper end of the backstage hydraulic clamping assembly Ⅰ25 can be centrally movably connected to the backstage clamping plate Ⅰ251 and the backstage clamping plate Ⅱ252, and the upper end of the backstage hydraulic clamping assembly Ⅱ26 can be centrally movably connected to the backstage clamping plate Ⅲ261 and the backstage clamping plate Ⅳ262.

[0031] In specific implementation, combined with Figure 8 As shown, the truss gripper grabs the backstage component from the rack and places it at the specified position of the backstage clamping and positioning component 2. The program is selected according to the workpiece model, and the background servo lifting component Ⅰ23, the background hydraulic clamping component Ⅰ25, the background servo lifting component Ⅱ24, and the background hydraulic clamping component Ⅱ26 are centered to the program specified position through the background servo centering moving component 22; the servo motor of the background servo lifting component Ⅰ23 drives the screw to rotate, thereby driving the nut installed on the screw and the slide connected to the nut, and the slide lifts the background hydraulic clamping component Ⅰ25 installed thereon to the program specified position through the guide rail slider; similarly, the servo motor of the background servo lifting component Ⅱ24 drives the screw to rotate, thereby driving the nut installed on the screw and the slide connected to the nut, and the slide lifts the background hydraulic clamping component Ⅱ26 installed thereon to the program specified position through the guide rail slider; the hydraulic motors of the background hydraulic clamping components Ⅰ25 and the background hydraulic clamping components Ⅱ26 drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the slide connected to the nut to perform centering clamping movement, and at this time the clamping positioning of the background components is completed.

[0032] Combination Figure 4 As shown, the left side plate clamping and positioning assembly 3 includes a left side bottom bracket 31 fixedly connected to the base bracket 61, the upper end of the left side bottom bracket 31 is connected to the left side hydraulic movable slide assembly 32 through a horizontal slide rail and a slider, the upper end of the left side hydraulic movable slide assembly 32 is fixedly connected to the left side magnetic clamping assembly Ⅰ33 and the left side magnetic clamping assembly Ⅱ34 toward the right side, and a left side movable hydraulic cylinder 35 is installed on the left side of the middle part of the slide of the left side hydraulic movable slide assembly 32, and the left side hydraulic movable slide assembly 32 can be horizontally moved on the left side bottom bracket 31 through the left side movable hydraulic cylinder 35, the slide rail and the slider.

[0033] Combination Figure 5 As shown, the right side plate clamping and positioning assembly 4 has the same structure as the left side plate clamping and positioning assembly 3, and the positions of the right side plate clamping and positioning assembly 4 and the left side plate clamping and positioning assembly 3 are arranged relative to each other.

[0034] In specific implementation, combined with Figure 8 As shown, the truss gripper grabs the left plate assembly from the rack and places it on the left pad 344 of the left hydraulic movable slide assembly 32, and adsorbs it through the electro-permanent magnet (left magnet 341) installed on the left magnetic suction clamping assembly I 33 and the left magnetic suction clamping assembly II 34. At this time, the adsorption and positioning of the left plate assembly is completed; The same action is performed on the right side plate assembly, and the right side plate clamping and positioning assembly 4 adsorbs and positions the right side plate assembly.

[0035] Combination Figure 6As shown, the base plate clamping and positioning assembly 5 includes a base plate bottom bracket 51 fixed with screws to the base bracket 61, the four upper corners of the base plate bottom bracket 51 are fixed with servo electric cylinder adjustment assemblies 54 by screws, the middle part of the upper end of the base plate bottom bracket 51 is fixed with screws to the base plate hydraulic inner circle centering assembly 52, and the left side of the upper end of the base plate bottom bracket 51 is fixed with screws to the base plate hydraulic tightening assembly 53.

[0036] The servo electric cylinder adjustment assembly 54 includes a vertically mounted electric cylinder and a pad 542 mounted on the top of the electric cylinder telescopic rod. The electric cylinder drives the pad 542 to move up and down, keeping the pads 542 at the four corners at the same suitable height, thereby keeping the bottom plate level.

[0037] The bottom plate hydraulic inner circle centering assembly 52 uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate centering slide Ⅰ521 and the bottom plate centering slide Ⅱ522 connected by the nut to perform reverse inward supporting and tightening movement. The upper ends of the bottom plate centering slide Ⅰ521 and the bottom plate centering slide Ⅱ522 are symmetrically fixed with positioning columns Ⅰ523 and positioning columns Ⅱ524 by screws. The positioning columns Ⅰ523 and positioning columns Ⅱ524 are moved away from each other to position the bottom plate with a circular hollow space mounted on the positioning columns Ⅰ523 and positioning columns Ⅱ524.

[0038] The bottom plate hydraulic tightening assembly 53 uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate tightening slide 531 connected to the nut to move horizontally. A positioning block 532 is fixedly connected to the bottom plate tightening slide 531. The bottom plate tightening slide 531 drives the positioning block 532 to move horizontally so that the positioning block 532 presses against the side of the bottom plate.

[0039] In specific implementation, combined with Figure 8 As shown, the truss gripper grabs the base plate assembly from the base plate assembly tooling and places it on the pad 542 on the servo electric cylinder adjustment assembly 54. The pad 542 is moved to a specified height position by the servo electric cylinder before the base plate assembly is delivered, ensuring that the upper reference surface heights of base plate assemblies of different thicknesses are consistent.

[0040] The hydraulic motor drives the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate centering slide Ⅰ521 and the bottom plate centering slide Ⅱ522 connected by the nut to perform reverse inward supporting and tightening movement to center the hollow inner circle of the bottom plate assembly.

[0041] The bottom plate hydraulic tightening assembly 53, the hydraulic motor drives the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate tightening slide 531 connected to the nut to perform tightening movement, and the positioning block 532 fixed on the bottom plate tightening slide 531 limits the circumferential freedom of the bottom plate assembly. At this time, the clamping and positioning of the bottom plate assembly is completed.

[0042] After clamping the bottom plate, left plate, right plate, front and back plates, S1, the servo motor of the front desk servo moving assembly 12 drives the screw to rotate, thereby driving the nut installed on the screw and the front desk slide 16 connected to the nut to move the front desk assembly to the specified position of the program through the horizontal movement of the guide rail slider; S2, the servo motor of the background servo moving component 21 drives the screw to rotate, thereby driving the nut installed on the screw and the slide connected to the nut and the background servo centering moving component 22, and the guide rail slider performs horizontal movement to move the background component to the specified position of the program; S3, the hydraulic cylinder of the left hydraulic movable slide assembly 32 is extended, and the left hydraulic movable slide assembly 32 is driven to move horizontally through the guide rail slider to press the left plate assembly tightly against the left side of the bottom plate assembly and the front and rear stage assemblies; S4. Similar to S3, push the right side panel tightly against the right side of the bottom plate assembly and the front and back assembly; S5. The left side downward pressure cylinder 343 of the left side magnetic clamping assembly II 34 contracts, driving the left side pressure block 342 to press downward, and the left side magnetic clamping assembly I 33 also performs the same action at the same time, pressing the bent portion on the upper end of the left side plate, so that the portion is close to the upper end of the bottom plate assembly; similarly, the left side magnetic clamping assembly I 33 and the left side magnetic clamping assembly II 34 press the bent portion on the upper end of the right side plate, so that the portion is close to the upper end of the bottom plate assembly; S6. At this point, the positioning and clamping of the various parts of the boom chassis workpiece are completed, and the welding robot starts spot welding according to the selection program; S7. After spot welding is completed, the front plate clamping and positioning assembly 1, the back plate clamping and positioning assembly 2, the left plate clamping and positioning assembly 3, and the right plate clamping and positioning assembly 4 move to the loading position respectively, and the truss gripper automatically unloads the workpiece. At this point, the automatic pairing of a workpiece is completed and waits for the next workpiece to be loaded.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic assembly tool for a boom truck chassis, characterized in that: The invention comprises a base assembly (6), wherein the base assembly (6) is in a cross shape when viewed from above, wherein a bottom plate clamping and positioning assembly (5) is fixedly connected to the middle of the base assembly (6), wherein one end of the base assembly (6) is fixedly connected to a front plate clamping and positioning assembly (1), and the other end is fixedly connected to a back plate clamping and positioning assembly (2), wherein one side of the base assembly (6) is fixedly connected to a left plate clamping and positioning assembly (3), and the other side is fixedly connected to a right plate clamping and positioning assembly (4), and encoders and proximity switches are installed at the moving, clamping and positioning parts of the bottom plate clamping and positioning assembly (5), the front plate clamping and positioning assembly (1), the back plate clamping and positioning assembly (2), the left plate clamping and positioning assembly (3) and the right plate clamping and positioning assembly (4).

2. The automatic assembly tool for the boom truck chassis according to claim 1 is characterized in that: The front desk clamping and positioning assembly (1) comprises a front desk bottom bracket (11) fixed to a base assembly (6); the upper end of the front desk bottom bracket (11) is fixedly connected to a front desk servo moving assembly (12); the upper end of the front desk servo moving assembly (12) is movably connected to a front desk slide (16); one end of the front desk slide (16) is fixedly connected to a front desk backrest assembly (14); the other end is fixedly connected to a front desk hydraulic jacking assembly (15); a front desk hydraulic clamping assembly (13) is further provided between the front desk backrest assembly (14) and the front desk hydraulic jacking assembly (15); the front desk hydraulic clamping assembly (13) is transversely fixed to the front desk slide (16); and both sides of the upper end of the front desk hydraulic clamping assembly (13) are movably connected to a front desk hydraulic clamping back plate I (131) and a front desk hydraulic clamping back plate II (132).

3. The automatic assembly tool for the boom truck chassis according to claim 2 is characterized in that: The front desk servo moving component (12) drives the front desk slide (16) to move horizontally, and the front desk hydraulic clamping component (13) uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the front desk hydraulic clamping plate I (131) and the front desk hydraulic clamping plate II (132) connected to the nut to perform centering clamping movement, and the hydraulic pressing component uses a hydraulic cylinder to perform horizontal telescopic movement, thereby pressing the front desk onto the front desk backing component (14).

4. The automatic assembly tool for the boom truck chassis according to claim 1 is characterized in that: The background clamping and positioning component (2) comprises a background servo moving component (21) fixedly connected to the base component (6); the upper end of the background servo moving component (21) is movably connected to the background servo centering moving component (22); the upper ends of the background servo centering moving component (22) are movably connected to the background servo lifting component I (23) and the background servo lifting component II (24); the sides of the background servo lifting component I (23) and the background servo lifting component II (24) close to each other are respectively connected to the background hydraulic clamping component I (25) and the background hydraulic clamping component II (26) in a manner that they can move up and down; the upper end of the background hydraulic clamping component I (25) is movably connected to the background clamping plate I (251) and the background clamping plate II (252); the upper end of the background hydraulic clamping component II (26) is movably connected to the background clamping plate III (261) and the background clamping plate IV (262).

5. The automatic assembly tool for the boom truck chassis according to claim 1 is characterized in that: The left side plate clamping and positioning assembly (3) comprises a left side bottom bracket (31) fixedly connected to the base assembly (6); the upper end of the left side bottom bracket (31) is horizontally slidably connected to a left side hydraulic movable slide assembly (32); the upper end of the left side hydraulic movable slide assembly (32) is respectively fixedly connected to a left side magnetic clamping assembly I (33) and a left side magnetic clamping assembly II (34) on both sides close to the center of the base assembly (6); the left side hydraulic movable slide assembly (32) is connected to a left side movable hydraulic cylinder (35) away from the center of the base assembly (6); and the left side hydraulic movable slide assembly (32) can be horizontally moved on the left side bottom bracket (31) by the left side movable hydraulic cylinder (35); The left magnetic clamping assembly II (34) comprises a left vertical plate, the left vertical plate is fixedly connected to the left hydraulic movable slide assembly (32), one side of the left vertical plate is fixedly connected to a left magnetic device (341), and the other side is connected to a left pressure block (342) via a vertical guide rail and a slide block, one side of the left pressure block (342) is connected to a vertical left downward pressure cylinder (343), and the left magnetic clamping assembly I (33) has the same structure as the left magnetic clamping assembly II (34); The right side plate clamping and positioning assembly (4) and the left side plate clamping and positioning assembly (3) have the same structure, and the right side plate clamping and positioning assembly (4) and the left side plate clamping and positioning assembly (3) are arranged relative to each other.

6. The automatic assembly tool for the boom truck chassis according to claim 1 is characterized in that: The base plate clamping and positioning assembly (5) comprises a base plate bottom bracket (51) fixedly connected to the base assembly (6); the four corners of the upper end of the base plate bottom bracket (51) are fixedly connected to servo electric cylinder adjustment assemblies (54); the middle of the upper end of the base plate bottom bracket (51) is fixedly connected to a base plate hydraulic inner circle centering assembly (52); and one side of the upper end of the base plate bottom bracket (51) is fixedly connected to a base plate hydraulic jacking assembly (53).

7. The automatic assembly tool for the boom truck chassis according to claim 6 is characterized in that: The servo electric cylinder adjustment assembly (54) comprises a vertically mounted electric cylinder and a cushion block (542) mounted on the top of the electric cylinder telescopic rod, wherein the electric cylinder drives the cushion block (542) to move up and down, keeping the cushion blocks (542) at the four corners at the same suitable height, thereby keeping the bottom plate level.

8. The automatic assembly tool for the boom truck chassis according to claim 6 is characterized in that: The bottom plate hydraulic inner circle centering assembly (52) uses a hydraulic motor to drive the trapezoidal screw to rotate, thereby driving the nut installed on the screw and the bottom plate centering slide plate I (521) and the bottom plate centering slide plate II (522) connected by the nut to perform reverse inward supporting and tightening movement. The upper ends of the bottom plate centering slide plate I (521) and the bottom plate centering slide plate II (522) are symmetrically installed with positioning columns I (523) and positioning columns II (524). The positioning columns I (523) and the positioning columns II (524) move away from each other, so that the bottom plate with a circular hollow space mounted on the positioning columns I (523) and the positioning columns II (524) is positioned.

9. The automatic assembly tool for the boom truck chassis according to claim 6 is characterized in that: The bottom plate hydraulic tightening assembly (53) uses a hydraulic motor to drive a trapezoidal screw to rotate, thereby driving a nut mounted on the screw and a bottom plate tightening slide (531) connected to the nut to move horizontally. A positioning block (532) is fixedly connected to the bottom plate tightening slide (531). The bottom plate tightening slide (531) drives the positioning block (532) to move horizontally so that the positioning block (532) presses against the side of the bottom plate.

10. The automatic assembly tool for the boom truck chassis according to claim 1 is characterized in that: The base assembly (6) comprises a base support (61) and an adjustment wire assembly (62). The adjustment wire assembly (62) has a plurality of components that are evenly distributed and fixedly connected to the periphery of the base support (61) and are used to adjust the horizontality of the base support (61). The base support (61) is provided with a plurality of screw holes and pin holes.

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