Automatic assembly device for boom cover plate

Abstract

The present invention relates to a processing device for the boom of a truck crane, and specifically discloses an automatic assembly device for boom covers, which includes a platform (3), a gantry (5) movably installed on the platform (3), vertical guide rails (8) installed on both sides of the gantry (5), and a moving die cart (10) used to be arranged inside the box formed by the upper cover (2) and the lower cover (1) of the boom during the assembly of the boom. An external fixing component (9) is movably installed on each of the vertical guide rails (8). The moving die cart (10) and the external fixing component (9) can cooperate internally and externally to press against the joint of the upper cover (2) and the lower cover (1) during the assembly of the boom, so as to ensure the positioning accuracy when the upper and lower covers are assembled. The automatic assembly device for boom covers of the present invention can accurately position the joint of the upper cover and the lower cover, and ensure the quality of subsequent welding.

Description

Technical Field

[0001] The present invention relates to a processing device for a boom of a truck crane, and more particularly to an automatic assembly device for boom cover plates. Background Art

[0002] In lifting machinery such as cranes, the boom is an important load-bearing component in the crane and plays a crucial role during the operation of the crane. During the manufacturing process of the boom, the assembly of the upper and lower cover plates of the boom is particularly important and directly affects the overall quality of the boom.

[0003] Currently, the positioning welding of the upper and lower cover plates of the boom is manually operated, and the positioning accuracy largely depends on the skill level of the operator. During the positioning welding of the upper cover plate and the lower cover plate, since the upper cover plate and the lower cover plate are in a relatively free state, accurate positioning of the joint cannot be performed, resulting in inconsistent gaps at the joint, which affects the subsequent automatic welding of the weld seam. Therefore, seeking a new method for positioning welding of the upper and lower cover plates is an important way to improve the quality of the weld seam.

[0004] In view of this, there is a need to provide an automatic assembly device for boom cover plates to solve or overcome the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatic assembly device for boom cover plates, which can accurately position the joint of the upper and lower cover plates and basically ensure the consistency of the gaps at the joint.

[0006] To solve the above technical problem, the present invention provides an automatic assembly device for boom cover plates, including a platform, a gantry movably installed on the platform, vertical guide rails installed on both sides of the gantry, and a moving die cart arranged inside the box formed by the upper cover plate and the lower cover plate of the boom when assembling the boom. An external fixing component is movably installed on each of the vertical guide rails. When assembling the boom, the moving die cart and the external fixing component can cooperate internally and externally to press against the joint of the upper cover plate and the lower cover plate, so as to ensure the positioning accuracy when the upper and lower cover plates are assembled.

[0007] Preferably, the external fixing component includes a moving block movably installed on the vertical guide rail, an external telescopic mechanism, and a horizontal external pressing roller for pressing against the joint from the outside. One end of the external telescopic mechanism is connected to the moving block, and the other end is installed with the horizontal external pressing roller.

[0008] Preferably, at least two groups of the external telescopic mechanisms are installed on the moving block in the vertical direction.

[0009] Preferably, a screw rod is arranged in parallel with the vertical guide rail, and the moving block is in threaded engagement with the screw rod.

[0010] Preferably, a lifting drive device is installed on the gantry, and the screw rod is drivingly connected to the lifting drive device so as to be able to drive the screw rod to rotate.

[0011] Preferably, longitudinal guide rails are provided on the platform, and the vertical beams on both sides of the gantry are installed on the longitudinal guide rails on both sides so as to be able to move along the longitudinal guide rails.

[0012] Preferably, a traveling drive device for driving the gantry to move along the longitudinal guide rails is also installed on the gantry.

[0013] Preferably, the mobile mold car includes a support, a first telescopic mechanism of the mold car provided on both sides of the support, and a horizontal inner pressing roller installed at the end of the first telescopic mechanism for pressing against the joint from the inside.

[0014] Preferably, second telescopic mechanisms of the mold car are obliquely arranged on both sides of the top of the mobile mold car, and universal balls for pressing against the inner surface of the box body are provided at the ends of the second telescopic mechanisms of the mold car; and a top pressing device capable of telescoping up and down is installed on the top beam of the gantry, and the pressing part of the top pressing device is arranged corresponding to each universal ball.

[0015] Preferably, the mobile mold car further includes a base plate with rollers installed at the bottom, and a mold car drive device for driving the rollers to move is installed on the base plate.

[0016] Preferably, the support and the base plate are connected by a third telescopic mechanism of the mold car.

[0017] By the above technical solutions, the beneficial effects of the present invention are as follows:

[0018] The automatic assembly device for the boom cover plates of the present invention includes a mobile mold car arranged in a box body formed by the upper and lower cover plates of the boom and an outer fixing component capable of moving up and down and installed on a vertical guide rail. When assembling the boom, the joint between the upper cover plate and the lower cover plate is pressed against by the internal and external cooperation of the mobile mold car and the outer fixing component to achieve accurate positioning, so as to effectively ensure the consistency of the welding gap in the subsequent process.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the drawings:

[0021] Figure 1It is a schematic structural diagram of a specific embodiment of the automatic assembling device for the boom cover plate of the present invention;

[0022] Figure 2 It is a schematic structural diagram of the mobile mold car of a specific embodiment of the automatic assembling device for the boom cover plate of the present invention;

[0023] Figure 3 It is a schematic structural diagram of the external fixing component of a specific embodiment of the automatic assembling device for the boom cover plate of the present invention; and

[0024] Figure 4 It is a schematic side view structure diagram of a specific embodiment of the automatic assembling device for the boom cover plate of the present invention.

[0025] Explanation of reference numerals

[0026] 1. Lower cover plate; 2. Upper cover plate; 3. Platform; 4. Longitudinal guide rail; 5. Gantry; 6. Lifting drive device; 7. Screw; 8. Vertical guide rail; 9. External fixing component; 10. Mobile mold car; 11. Top pressing device; 12. Travel drive device; 13. Roller; 14. Second telescopic mechanism of the mold car; 15. Universal ball; 16. Horizontal inner pressing roller; 17. Mold car drive device; 18. Moving block; 19. Horizontal outer pressing roller; 20. External telescopic mechanism; 21. Support; 22. First telescopic mechanism of the mold car; 23. Base plate; 24. Third telescopic mechanism of the mold car. Specific embodiments

[0027] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0028] First of all, it should be noted that some orientation terms involved in the following description to clearly illustrate the technical solution of the present invention are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present invention.

[0029] In addition, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The present invention provides an automatic assembling device for boom covers. Refer to Figures 1 to 4 As shown in the figure, it includes a platform 3, a gantry 5 movably installed on the platform 3, vertical guide rails 8 installed on both sides of the gantry 5, and a moving mold cart 10 disposed inside the box formed by the upper cover plate 2 and the lower cover plate 1 of the boom when assembling the boom. An external fixing component 9 is movably installed on each vertical guide rail 8. The moving mold cart 10 and the external fixing component 9 can cooperate internally and externally to press against the joint of the upper cover plate 2 and the lower cover plate 1 during the assembly of the boom, so as to ensure the positioning accuracy when the upper and lower cover plates are assembled.

[0032] It should be noted that for the automatic assembling device for boom covers of the present invention, the external fixing component 9 and the moving mold cart 10 can cooperate internally and externally to press against the joint of the upper cover plate 2 and the lower cover plate 1 during the assembly of the boom to ensure precise positioning. The specific working process is as follows: First, when it is necessary to assemble and weld the upper cover plate 2 and the lower cover plate 1, use a crane to place the upper cover plate 2 on the platform 3. Then, the moving mold cart 10 moves from both sides of the platform 3 to the middle along the length direction of the box to the joint and adjusts to a suitable height. Since the moving mold cart 10 and the gantry 5 move synchronously, it is also necessary to move the external fixing component 9 to a predetermined position on the vertical guide rail 8. The specific position can be adjusted according to the height of the joint. The vertical guide rail 8 can ensure that the external fixing component 9 moves vertically along it and prevent deviation in the left and right directions. Finally, place the lower cover plate 1 on the moving mold cart 10, and use the moving mold cart 10 and the external fixing component 9 to cooperate internally and externally to press against the joint of the upper cover plate 2 and the lower cover plate 1 to ensure precise positioning. Then, perform automatic welding. When the welding is completed, move the external fixing component 9 and the moving mold cart 10 away from the joint. The box formed by the upper cover plate 2 and the lower cover plate 1 is in a free state, and use a crane to lift the box out to complete the positioning welding of the upper and lower cover plates.

[0033] As a specific embodiment of the external fixing component 9, refer to Figure 4The external fixing assembly 9 includes a moving block 18 movably mounted on the vertical guide rail 8, an external telescopic mechanism 20, and a horizontal external pressing roller 19 for pressing against the joint from the outside. One end of the external telescopic mechanism 20 is connected to the moving block 18, and the other end is equipped with the horizontal external pressing roller 19. It should be noted that the moving block 18 can adjust its position on the vertical guide rail 8 according to the height of the joint. In order to ensure a wider height adjustment range, the length of the vertical guide rail 8 should be as long as possible. When it is necessary to press against the joint from the outside of the box, first, adjust the moving block 18 to the set height position, and then, the external telescopic mechanism 20 drives the horizontal external pressing roller 19 to press against the joint on the outer surface of the box through the telescopic adjustment. Here, preferably, the external telescopic mechanism 20 can be, for example, a hydraulic cylinder.

[0034] Specifically, refer to Figure 4 At least two sets of external telescopic mechanisms 20 are installed on the moving block 18 in the vertical direction. It should be noted that multiple external telescopic mechanisms 20 can be set on the moving block 18, and the number of external telescopic mechanisms 20 can be determined according to the positioning accuracy requirements of the joint. Generally, under the condition that the normal operation of the external telescopic mechanisms 20 can be ensured, the higher the positioning requirements of the joint, the more external telescopic mechanisms 20 can be appropriately increased; in order to ensure the balance of the pressing effect on the outer surface of the box body, multiple sets of external telescopic mechanisms 20 should be arranged symmetrically up and down along the joint.

[0035] Specifically, refer to Figure 1 and Figure 4 , the vertical guide rail 8 is arranged in parallel with the screw rod 7, and the moving block 18 is threadedly engaged with the screw rod 7. It should be noted that when installing the vertical guide rail 8 and the screw rod 7, it should be ensured that they are perpendicular to the platform 3 in the vertical direction, thereby ensuring that the external telescopic mechanism 20 can drive the horizontal external pressing roller 19 to press horizontally against the outside of the box.

[0036] Specifically, refer to Figure 1 , a lifting drive device 6 is installed on the gantry 5, and a transmission connection screw 7 is installed on the lifting drive device 6 to drive the screw 7 to rotate. It should be noted that, preferably, the lifting drive device 6 can be a motor and its reduction mechanism, and the motor is installed with the screw 7 through a coupling. When it is necessary to assemble the upper cover plate 2 and the lower cover plate 1, the motor is started to drive the screw 7 to rotate. Due to the threaded cooperation between the moving block 18 on the external fixing component 9 and the screw 7, the rotational movement of the screw 7 can be converted into the up and down movement of the moving block 18, thereby realizing the height adjustment of the external fixing component 9. When the external fixing component 9 reaches a predetermined height, the motor is turned off. At this time, the external fixing component 9 can be pressed against the joint from the outside of the box.

[0037] Specifically, refer to Figure 1, longitudinal guide rails 4 are arranged on the platform 3, and the vertical beams on both sides of the gantry 5 are installed on the longitudinal guide rails 4 on both sides so as to be able to move along the longitudinal guide rails 4. It should be noted that the movement of the gantry 5 can be realized by opening a groove along the length direction of the box on the platform 3, and installing the longitudinal guide rails 4 in the groove; or a strip-shaped protrusion can be arranged on the platform 3 along the length of the box, and a groove is opened at the bottom of the gantry 5, and the movement of the gantry 5 can be realized by the cooperation between the strip-shaped protrusion and the bottom groove of the gantry 5.

[0038] Specifically, refer to Figure 1 , the gantry 5 is also equipped with a travel drive device 12 for driving the gantry 5 to move along the longitudinal guide rail 4. It should be noted that the travel drive device 12 includes a control device, a motor, a reducer and a transmission shaft, wherein the control device is installed on the side vertical beam on the gantry 5. For the convenience of control, the height of its installation is within the range of normal human height. A travel roller can be installed at the bottom of the gantry 5. The motor and the reducer are connected to the travel roller via a transmission mechanism. When the gantry 5 needs to be moved along the longitudinal guide rail 4, the working process is as follows: First, the control device starts the motor, and the output shaft of the motor transmits power to the reducer, and the reducer can reduce the speed of the motor. Then, the power is transmitted from the output end of the reducer to the transmission shaft, and the transmission shaft is equipped with a travel roller. At this time, the travel roller can move along the longitudinal guide rail 4 to achieve the purpose of driving the gantry 5.

[0039] As a specific embodiment of the mobile mold vehicle 10, refer to Figure 2 The mobile mold cart 10 includes a support 21, a first telescopic mechanism 22 of the mold cart arranged on both sides of the support 21, and a horizontal inner clamping roller 16 installed at the end of the first telescopic mechanism 22 for pressing against the joint from the inside. It should be noted that the mobile mold cart 10 also includes a third telescopic mechanism 24 arranged at the bottom of the support 21. Preferably, the third telescopic mechanism 24 is a cylinder. When the mobile mold cart 10 enters the box, the support 21 needs to be adjusted to a predetermined height by utilizing the telescopic effect of the third telescopic mechanism 24 of the mold cart. Then, the telescopic effect of the first telescopic mechanism 22 is utilized to drive the horizontal inner clamping roller 16 to press against the joint of the inner surface of the box. It should be noted that the horizontal inner clamping roller 16 and the horizontal outer clamping roller 19 need to cooperate to achieve the pressing against the joint of the inner and outer surfaces of the box.

[0040] Further, refer to Figure 2, on both sides of the top of the mobile mold cart 10, there are also arranged inclined mold cart second telescopic mechanisms 14. At the end of the mold cart second telescopic mechanism 14, there is a universal ball 15 for pressing against the inner surface of the box body; and on the top beam of the gantry 5, there is installed a top pressing device 11 capable of telescoping up and down. The pressing part of the top pressing device 11 is arranged corresponding to each universal ball 15. It should be noted that the top pressing device 11 can be driven by an oil cylinder to achieve the telescopic function. After the lower cover plate 1 is covered on the upper cover plate 2, start the oil cylinders of the mold cart second telescopic mechanism 14 and the top pressing device 11 simultaneously. Use the universal ball 15 to squeeze the inner surface of the box body and cooperate with the pressing part of the top pressing device 11 to squeeze the outer surface of the box body to achieve accurate positioning of the lower cover plate 1 and prevent deviation.

[0041] Further, referring to Figure 2 , the mobile mold cart 10 further includes a base plate 23 with rollers 13 installed at the bottom, and a mold cart driving device 17 for driving the movement of the rollers 13 is installed on the base plate 23. It should be noted that when a joint of the box body is welded, the mobile mold cart 10 needs to move along the length direction of the box body to another position for positioning. The movement of the rollers 13 can be driven by the mold cart driving device 17. Specifically, the mold cart driving device 17 can include a motor, a reducer, and a transmission shaft. Its working process is as follows: start the motor, the output shaft of the motor transmits power to the reducer, then, the power is transmitted from the output end of the reducer to the transmission shaft, and the rollers 13 are installed on the transmission shaft to achieve the movement of the mobile mold cart 10.

[0042] From the above description, it can be seen that first, when the upper cover plate 2 and the lower cover plate 1 need to be paired, use the overhead crane to place the upper cover plate 2 on the platform 3. Then, the mobile mold cart 10 moves from both sides of the platform 3 to the middle along the length direction of the box body to the corresponding joint. According to the position of the joint, use the telescopic action of the third telescopic mechanism 24 to adjust the mold cart first telescopic mechanism 22 and the mold cart second telescopic mechanism 14 to the appropriate height. At the same time, it is necessary to start the lifting driving device 6 to drive the screw rod 7 to drive the external telescopic mechanism 20 at one end of the moving block 18 to reach the corresponding height. Through the pressing action of the horizontal outer pressing roller 19 on the external telescopic mechanism 20 and the horizontal inner pressing roller 16 on the mold cart first telescopic mechanism 22 on the joint of the box body, ensure accurate positioning. Among them, the universal ball 15 on the mold cart second telescopic mechanism 14 and the pressing part of the top pressing device 11 can accurately position the lower cover plate 1 to prevent the lower cover plate 1 from deviating and affecting the positioning accuracy of the joint.

[0043] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0044] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0045] Furthermore, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should equally be regarded as the content disclosed by the present invention.

Claims

1. An automatic assembly device for boom covers, characterized in that, It includes a platform (3), a gantry (5) movably installed on the platform (3), vertical guide rails (8) installed on both sides of the gantry (5), and a mobile mold car (10) arranged inside the box formed by the upper cover plate (2) and the lower cover plate (1) of the boom when assembling the boom. An external fixing component (9) is movably installed on each of the vertical guide rails (8). When assembling the boom, the mobile mold car (10) and the external fixing component (9) can cooperate internally and externally to press against the joint of the upper cover plate (2) and the lower cover plate (1), so as to ensure the positioning accuracy when the upper and lower cover plates are paired; The mobile mold car (10) includes a support (21), a first telescopic mechanism (22) of the mold car arranged on both sides of the support (21), and a horizontal internal pressing roller (16) installed at the end of the first telescopic mechanism (22) for pressing against the joint from the inside; The mobile mold car (10) further includes a base plate (23) with rollers (13) installed at the bottom. The support (21) is connected to the base plate (23) through a third telescopic mechanism (24) of the mold car; The external fixing component (9) includes a moving block (18) movably installed on the vertical guide rail (8), an external telescopic mechanism (20), and a horizontal external pressing roller (19) for pressing against the joint from the outside. One end of the external telescopic mechanism (20) is connected to the moving block (18), and the other end is installed with the horizontal external pressing roller (19); On both sides of the top of the mobile mold car (10), there are also inclined second telescopic mechanisms (14) of the mold car. A universal ball (15) for pressing against the inner surface of the box is arranged at the end of the second telescopic mechanism (14) of the mold car; and a top pressing device (11) capable of telescoping up and down is installed on the top beam of the gantry (5). The pressing part of the top pressing device (11) is arranged corresponding to each of the universal balls (15).

2. The automatic assembly device for the boom cover plate according to claim 1, wherein At least two groups of the external telescopic mechanisms (20) are installed on the moving block (18) in the vertical direction.

3. The automatic assembly device for the boom cover plate according to claim 1, characterized in that, Screws (7) are arranged in parallel with the vertical guide rails (8). The moving block (18) is in threaded fit with the screws (7).

4. The automatic assembly device for the boom cover plate according to claim 3, characterized in that, A lifting drive device (6) is installed on the gantry (5). The screw (7) is in transmission connection with the lifting drive device (6) to drive the screw (7) to rotate.

5. The automatic assembly device for the boom cover plate according to claim 1, characterized in that, A longitudinal guide rail (4) is arranged on the platform (3). The vertical beams on both sides of the gantry (5) are installed on the longitudinal guide rails (4) on both sides to be able to move along the longitudinal guide rail (4).

6. The automatic assembly device for the boom cover plate according to claim 5, characterized in that, A traveling drive device (12) for driving the gantry (5) to move along the longitudinal guide rail (4) is also installed on the gantry (5).

7. The automatic assembly device for the boom cover plate according to claim 1, wherein The mobile mold car (10) further includes a base plate (23) with rollers (13) installed at the bottom, and a mold car drive device (17) for driving the rollers (13) to move is installed on the base plate (23).

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