Welding positioning device for crane outrigger box

Abstract

The present application relates to the crane technical field, specifically to a kind of crane outrigger box welding positioning device, can solve the problems of existing automatic welding device complex structure, high cost.The crane outrigger box welding positioning device includes positioning platform, the positioning platform is arranged with two or more support seats in the direction of the overturning axis of positioning platform, the support seat includes two end support seats for supporting the axial end of outrigger box respectively, at least one end support seat is provided with the axial positioning protrusion for the outrigger box along the axial positioning of outrigger box, at least one the support seat is provided with the lateral positioning protrusion for the outrigger box is positioned on the positioning platform in the direction perpendicular to the axial direction of outrigger box, the end support seat with axial positioning protrusion is also provided with the pressing plate for being pressed to the inner side wall of outrigger box to press the outrigger box on support seat.

Description

Technical Field

[0001] This invention relates to the field of crane technology, and more specifically to a welding positioning device for crane outrigger boxes. Background Technology

[0002] With the continuous development of the construction industry, the demand for engineering vehicles such as cranes is constantly increasing. For example, a truck crane is a type of crane where the lifting operation is mounted on a special or general-purpose truck chassis. It includes an upper vehicle and an lower vehicle; the upper vehicle is the lifting component, and the lower vehicle is the transport vehicle. The lower vehicle includes components such as the underframe, chassis, and horizontal outriggers. The horizontal outriggers consist of a fixed outrigger box and movable outriggers. Both the movable outriggers and the fixed outrigger box are made of steel plates. The fixed outrigger box is welded to the chassis as a single unit. The movable outriggers can move within the fixed outrigger box to adjust the stabilizing torque during lifting, ensuring the overall stability of the crane during operation. For an example of an existing outrigger box structure, refer to Chinese Patent CN207468063U, with an authorization announcement date of June 8, 2018.

[0003] Traditional manual welding methods are inefficient in manufacturing outrigger boxes and cannot meet the growing market demand. Combining welding of key components with mechanical turning equipment and robotic arms can effectively ensure the welding quality of crane outrigger boxes and improve production efficiency. For example, Chinese patent application CN108247247A, published on July 6, 2018, discloses an automatic welding device for horizontal outriggers of engineering machinery equipment. The device includes an active positioner, a passive positioner, and a welding robot positioned between the active and passive positioners. The active positioner has a rotatable active gripper with a first clamping component for pressing the upper surface of the horizontal outrigger to be welded. The passive positioner has a rotatable passive gripper with a second clamping component for pressing the side of the horizontal outrigger to be welded. The passive positioner also has a rotary locking component for locking or unlocking the passive gripper. A support assembly for supporting the bottom surface of the horizontal outrigger to be welded is provided between the active and passive positioners. A pushing component for pushing the horizontal outrigger to be welded into the active and passive grippers is also provided on the same side of both the active and passive positioners. When welding the outrigger box, the outrigger box needs to be hoisted onto the support frame and pushed into place using the pushing component. Then, the first clamping component and the second clamping component can fix the outrigger box, while the active gripper and the driven gripper can drive the outrigger box to rotate, thus facilitating the welding robot to weld the outrigger box.

[0004] However, the automatic welding device disclosed in the above patent requires the installation of sensors to detect the pushing position of the pushing component, and also requires the installation of a clamping cylinder to clamp the workpiece, which is complex in structure and high in cost. Summary of the Invention

[0005] The purpose of this invention is to provide a welding positioning device for crane outrigger boxes, so as to solve the problems of complex structure and high cost of existing automatic welding devices.

[0006] To achieve the above objectives, the crane outrigger box welding positioning device of the present invention adopts the following technical solution:

[0007] A crane outrigger box welding positioning device includes a positioning platform. Two or more support seats are arranged at intervals along the rotation axis of the positioning platform. The support seats include two end support seats for supporting the axial ends of the outrigger box. At least one end support seat is provided with an axial positioning protrusion for positioning the outrigger box along the axial direction of the outrigger box. At least one of the support seats is provided with a lateral positioning protrusion for positioning the outrigger box on the positioning platform in a direction perpendicular to the axial direction of the outrigger box. The end support seat with the axial positioning protrusion is also provided with a pressure plate for pressing against the inner sidewall of the outrigger box to press the outrigger box onto the support seat.

[0008] Its beneficial effects are as follows: the outrigger box is positioned on the positioning platform through axial and lateral positioning protrusions, while the pressure arm presses the outrigger box firmly onto the positioning platform. When the flipping device drives the positioning platform to move, the outrigger box can maintain a stable cooperation relationship with the positioning platform, which facilitates the welding robot to weld the outrigger box. The support base is set on the positioning platform, which has a simple structure, is easy to implement, and also has the advantage of low cost in actual production.

[0009] Furthermore, the support base includes a top plate for supporting the outrigger box and a bottom plate connected to the positioning platform, and a telescopic structure is provided between the top plate and the bottom plate to realize the height adjustment of the support base.

[0010] Its beneficial effects are as follows: the telescopic structure between the top plate and the bottom plate allows the height of the support base to be adjusted, and by changing the height of the support base, it can accommodate more leg boxes of different sizes.

[0011] Furthermore, the telescopic structure includes an upper screw fixed to the top plate and a lower screw fixed to the bottom plate, with the upper screw and the lower screw having opposite directions of rotation; the telescopic structure also includes a rotating sleeve connecting the upper screw and the lower screw, the rotating sleeve having an upper threaded section adapted to the upper screw and a lower threaded section adapted to the lower screw respectively.

[0012] Its advantages are: the reverse thread engagement enables the two studs to move towards or away from each other, the structure is simple, it is widely used in actual production, and it is easy for operators to implement in this example.

[0013] Furthermore, the top plate of the support base has a boss at the end away from the leg box. The boss has a stop surface that stops and cooperates with the corresponding side of the leg box, and the boss forms an axial positioning protrusion.

[0014] Its beneficial effects are as follows: the use of bosses to form axial positioning protrusions, the bosses have a large supporting surface, which can stably support the outrigger box and improve the stability of the crane outrigger box welding positioning device during operation.

[0015] Furthermore, the boss is provided at one end of the outrigger box with a beveled surface, and a pressure arm is provided on the boss by means of a threaded fastener. The pressure arm has a pressing end that presses against the upper surface of the outrigger box and a fixing end that is fixed to the threaded fastener.

[0016] Its advantages are: the pressure plate is formed by using a pressure arm, the pressure arm structure is simple and easy to implement.

[0017] Furthermore, the pressure arm is provided with a waist-shaped hole for threaded fasteners to pass through.

[0018] Its beneficial effect is that the pressure arm is provided with a waist-shaped hole, which makes it easy to adjust the relative position between the pressure arm and the outrigger box, so that the crane outrigger box welding positioning device can be adapted to outrigger boxes of more sizes.

[0019] Furthermore, the top plate is provided with an oblong hole extending in a direction perpendicular to the flipping axis, and a baffle forming a lateral positioning protrusion is also provided. A threaded fastener for fixed connection with the baffle is inserted in the oblong hole. The baffle can be moved in the oblong hole by the threaded fastener to achieve adjustable position on the top plate in a direction perpendicular to the flipping axis.

[0020] Its beneficial effects are: the baffle can be adjusted in position through the waist-shaped hole, which enables the crane outrigger box welding positioning device to be adapted to outrigger boxes of more different widths, thus improving its applicability.

[0021] Furthermore, the positioning platform is provided with a fixing groove extending along its flip axis, and a fixing member that moves along the flip axis is guided in the fixing groove. The end of the support seat near the fixing groove is fixedly connected to the fixing member to achieve positional adjustment in the flip axis direction.

[0022] Its beneficial effects are: by making the position of the support base adjustable on the positioning platform through the fixing parts, the crane outrigger box welding positioning device can be adapted to more outrigger boxes of different lengths, and it is also convenient for operators to adjust the position of each support base.

[0023] Furthermore, the cross-section of the fixing groove is T-shaped, and the fixing element inside the fixing groove is a T-bolt.

[0024] Its beneficial effects are as follows: by setting the fixing groove and fixing parts into a T-shape, the groove wall of the fixing groove and the T-bolt have a large guiding mating surface, which makes the support seat move more stably and smoothly on the positioning platform.

[0025] Furthermore, an auxiliary support seat is provided between the two end support seats to support the middle part of the outrigger box. The auxiliary support seat is provided with a lateral positioning protrusion for positioning the outrigger box on the positioning platform in a direction perpendicular to the axial direction of the outrigger box.

[0026] Its beneficial effects are as follows: an auxiliary support seat that cooperates with the end support seat is also provided on the positioning platform. The auxiliary support seat is provided with a lateral positioning protrusion, which improves the stability of the outrigger box when the positioning platform is flipped. Attached Figure Description

[0027] Figure 1 This is a left view of the crane outrigger box welding positioning device and the outrigger box in the cooperation state according to the present invention;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0030] Figure 4 This is a top view of the crane outrigger box welding positioning device and the outrigger box in the cooperation state of the present invention;

[0031] Figure 5 for Figure 4 Enlarged view of point C in the middle.

[0032] In the diagram: 01. Positioning platform; 02. Outrigger box; 03. Rear support seat; 31. Rear top plate; 32. Rear rotating sleeve; 33. Rear bottom plate; 34. Boss; 04. Auxiliary support seat; 41. Auxiliary baffle; 42. Auxiliary top plate; 43. Auxiliary bottom plate; 05. Front support seat; 51. Front top plate; 52. Front rotating sleeve; 53. Front bottom plate; 54. Stop block; 55. Front baffle; 06. Pressure plate; 07. Pressure arm; 08. Through hole. Detailed Implementation

[0033] The specific embodiments of the crane outrigger box welding positioning device of the present invention will now be described with reference to the accompanying drawings.

[0034] like Figure 1As shown, the crane outrigger box welding positioning device of the present invention is used to connect with the tilting device, including a positioning platform 01. The positioning platform 01 can be part of the tilting device or a separate structure. The positioning platform 01 can move under the drive of the tilting device, and the welding robot welds the outrigger box 02 clamped on the positioning platform 01. The positioning platform 01 is mainly composed of plates and support beams, and has a large and flat reference surface. The support beams can also provide high mechanical strength for the positioning platform 01. In order to ensure the fixation of the outrigger box 02, two or more support seats are provided on the positioning platform 01 at intervals along the tilting axis of the positioning platform. Among these support seats, there are two end support seats for supporting the axial ends of the outrigger box 02. The two end support seats are located on the bottom surfaces of the two ends of the outrigger box 02 in the length direction. For ease of description, they are referred to as... Figure 1 The orientation is defined as front on the left and rear on the right. The two end supports are the front support 05 and the rear support 03, which are arranged at intervals along the rotation axis of the positioning platform 01 during operation. At least one of the end supports is provided with an axial positioning protrusion for positioning the leg box 02 along its axial direction. At least one of the supports on the positioning platform is provided with a lateral positioning protrusion for positioning the leg box 02 on the positioning platform 01 in a direction perpendicular to its axial direction. The support with the axial positioning protrusion is also provided with a pressure plate for pressing against the inner sidewall of the leg box 02 to press the leg box 02 onto the support. The leg box 02 is positioned on the positioning platform 01 by the axial and lateral positioning protrusions, and the pressure arm presses the leg box 02 firmly onto the positioning platform 01. When the rotation device drives the positioning platform 01 to move, the leg box 02 can maintain a stable engagement with the positioning platform 01, which facilitates the welding robot to weld the leg box 02.

[0035] The crane outrigger box welding positioning device of this invention includes, in addition to the two end supports spaced apart along the tilting axis, an auxiliary support 04 disposed between the two supports. The front support 05 and the rear support 03 support the front and rear ends of the outrigger box 02, respectively, while the auxiliary support 04 located between the two supports supports the middle part of the outrigger box 02. Figure 2As shown, the rear support 03 includes a rear top plate 31 and a rear bottom plate 33 arranged in the vertical direction. A telescopic structure is provided between the rear top plate 31 and the rear bottom plate 33. The telescopic structure can adjust the gap between the rear top plate 31 and the rear bottom plate 33, thereby realizing the lifting and lowering of the entire rear support 03 to adapt to workpieces of different heights to be welded. The telescopic structure includes an upper screw and a lower screw that are respectively connected to the rear top plate 31 and the rear bottom plate 33. The upper screw and the lower screw are arranged opposite to each other and their threads rotate in opposite directions. A rear rotating sleeve 32 is provided between the upper screw and the lower screw to connect them. The rear rotating sleeve 32 has upper threaded sections and lower threaded sections corresponding to the upper screw and the lower screw, respectively. When the operator drives the rear rotating sleeve 32 to rotate, the different threaded sections in the rear rotating sleeve 32 correspond to the different screws to perform threaded transmission, so that the two screws move towards or away from each other. At this time, since the rear rotating sleeve 32 is rotating, the two screws can achieve linear movement in the vertical direction without rotating through the rotation of the rear rotating sleeve 32. Therefore, the rear top plate 31 and the rear bottom plate 33, which are respectively connected to the upper screw and the lower screw, will not rotate, but will only move linearly in the vertical direction.

[0036] Meanwhile, a fixing groove for fixing the rear support seat 03 is provided on the positioning platform 01. The groove body extends along the flipping axis of the positioning platform 01, and its cross-section is T-shaped. The bottom plate of the rear support seat 03 is fixed to the positioning platform 01 by T-bolts. The screw of the T-bolt extends out from the fixing groove and connects with the bottom plate of the rear support seat 03. The connection of the T-bolt is in the groove wall stop fit and can move along the extension direction of the groove body in the fixing groove. The rear support seat 03 can be adjusted in the front and rear direction of the positioning platform 01 by the guide fit between the T-bolt and the fixing groove.

[0037] Furthermore, a boss 34 located at the rear end of the top plate of the rear support 03 is provided. The boss 34 has a front side that engages with the outrigger box 02, and the front side also forms a stop surface that restricts the axial position of the outrigger box 02. This boss 34 also forms an axial positioning protrusion on the rear support 03. The boss 34 is located at one end with a chamfered surface near the outrigger box 02. On the upper surface of the boss 34, a pressure arm 07 extending horizontally is provided, such as... Figure 4 As shown, the pressure arm 07 has an oblong hole extending along the front-rear direction of the outrigger box 02 (i.e., the direction of the rotation axis of the positioning platform 01). The pressure arm 07 is adjusted relative to the rear support seat 03 by bolts passing through the oblong hole. At the same time, the pressure arm 07 also forms a pressure plate for pressing against the inner wall of the outrigger box 02 to press the outrigger box 02 onto the rear support seat 03. The pressure arm 07 extends forward and has a crimping end that presses against the upper surface of the outrigger box 02 and a fixing end that mates with the threaded fastener and the oblong hole. The crimping end of the pressure arm 07 extends into the upper surface of the outrigger box 02 to press the outrigger box 02 onto the positioning platform 01.

[0038] For the front support 05, such as Figure 3 As shown, it also includes a front top plate 51, a front bottom plate 53, and a lower screw and an upper screw connecting the front bottom plate 53 and the front top plate 51. The upper screw and the lower screw cooperate with the front rotating sleeve 52 to form the same telescopic structure as in the rear support 03. The connection method is the same as that of the telescopic structure of the rear support 03. The front bottom plate 53 of the front support 05 is also adjustable on the positioning platform 01 by means of a T-bolt and a guide engagement with the fixing groove. Therefore, these two aspects will not be described in detail here. The difference of the front support 05 is that a stop block 54 is bolted to the front side wall of the front support 05. The stop block 54 engages with the front side of the outrigger box 02 to form an axial positioning protrusion on the front support 05. Furthermore, the outrigger box 02 located on the front support 05 has a through hole 08 formed by a combination of round holes and square holes. A pressure plate 06 is correspondingly provided in the through hole 08. One end of the pressure plate 06 is sunk into the round hole, and the other end is pressed on the edge of the square hole. Bolts are provided on the front support 05, and the pressure plate 06 is fixed to the front support 05 by the bolts and is tightened by the bolts.

[0039] like Figure 5 As shown, the auxiliary support base 04 is also composed of an auxiliary top plate 42 and an auxiliary bottom plate 43. A screw and an auxiliary rotating sleeve for telescopic function are also provided between the auxiliary bottom plate 43 and the auxiliary top plate 42. On the front top plate 51 of the front support base 05, a baffle is provided along the width direction (i.e., perpendicular to the length direction of the outrigger box 02). An oblong hole extending perpendicular to the length direction of the outrigger box 02 is opened on the front top plate 51 of the front support base 05. Front baffles 55 are bolted to both sides of the front top plate 51. The position of the front baffles 55 on the front top plate 51 is adjustable through the oblong hole to accommodate outrigger boxes 02 of different widths. Similarly, an auxiliary baffle 41 is provided on the auxiliary top plate 42 of the auxiliary support base 04. The position of the auxiliary baffle 41 is also adjustable through the oblong hole.

[0040] When the operator uses the crane outrigger box welding positioning device of this invention, the front support seat 05, the rear support seat 03, and the auxiliary support seat 04 are first fixed to the positioning platform 01 through the fixing groove. The height of the rear support seat 03 and the auxiliary support seat 04 are adjusted so that they support the outrigger box 02. The boss 34 on the rear support seat 03 axially positions the outrigger box 02. Then, the front support seat 05 is adjusted so that the stop 54 on the front support seat 05 cooperates with the boss 34 on the rear support seat 03 to completely axially position the outrigger box 02. Then, the baffles on the front support seat 05 and the auxiliary support seat 04 are adjusted to achieve lateral positioning of the outrigger box 02. Finally, the pressure arm 07 and the pressure plate 06 are fixed to the support seats respectively, pressing the outrigger box 02 tightly onto the positioning platform 01.

[0041] In other embodiments, end support seats can only be provided at both ends of the outrigger box, and no auxiliary support seat will be provided in the middle of the outrigger box. In this case, axial positioning protrusions and lateral positioning protrusions are provided on the end support seats.

[0042] In other embodiments, the end support may be provided with axial positioning protrusions and lateral positioning protrusions.

[0043] In other embodiments, the pressure plate on the front support can have a larger area, thereby directly covering the through hole of the outrigger box, instead of using an installation method that involves sinking it into the through hole.

[0044] In other embodiments, multiple auxiliary support bases may be provided.

[0045] In other embodiments, the baffle forming the lateral blocking protrusion may be fixedly mounted on the top plate instead of being movable.

[0046] The specific embodiments described above further illustrate the inventive purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A welding positioning device for a crane outrigger box, characterized in that: The positioning platform comprises two or more support seats arranged along the direction of the overturning axis of the positioning platform, the support seats comprise two end support seats for supporting the axial end of the outrigger box and an auxiliary support seat between the two end support seats, the two end support seats are each provided with an axial positioning protrusion for positioning the outrigger box along the axial end of the outrigger box, at least one end support seat is provided with a lateral positioning protrusion for positioning the outrigger box on the positioning platform along a direction perpendicular to the axial direction of the outrigger box, the two end support seats are further provided with a pressing plate for pressing the inner side wall of the outrigger box to press the outrigger box on the support seat, the auxiliary support seat is provided with a lateral positioning protrusion for positioning the outrigger box on the positioning platform along a direction perpendicular to the axial direction of the outrigger box, the lateral positioning protrusion is adjustable in position in the width direction of the outrigger box through a waist-shaped hole, the positioning platform is provided with a fixed groove extending along the overturning axis thereof, a fixed member moving along the overturning axis is arranged in the fixed groove in a guided manner, one end of the support seat close to the fixed groove is fixedly connected with the fixed member to realize adjustable position in the direction of the overturning axis, the pressing plate on the rear end support seat is provided with a waist-shaped hole extending along the overturning axis of the positioning platform for the threaded fastener to pass through to realize adjustable position, and the pressing plate has a pressing end for pressing the upper surface of the outrigger box and a fixed end fixed with the threaded fastener.

2. Crane outrigger box welding positioning device according to claim 1, characterized in that: The support seat comprises a top plate for supporting the outrigger box and a bottom plate connected with the positioning platform, and a telescopic structure is arranged between the top plate and the bottom plate to realize adjustable height of the support seat.

3. Crane outrigger box welding positioning device according to claim 2, characterized in that: The telescopic structure comprises an upper screw rod fixed on the top plate and a lower screw rod fixed on the bottom plate, and the rotation directions of the upper screw rod and the lower screw rod are opposite; the telescopic structure further comprises a rotating sleeve connecting the upper screw rod and the lower screw rod, and the rotating sleeve is provided with an upper threaded section matched with the upper screw rod and a lower threaded section matched with the lower screw rod.

4. The crane outrigger box welding positioning device of claim 2, wherein: One end of the top plate of the two end support seats away from the outrigger box is respectively provided with a boss, the boss has a stop surface matched with the corresponding side surface of the outrigger box, and the boss forms the axial positioning protrusion.

5. Crane outrigger box welding positioning device according to claim 4, characterized in that: The boss is arranged at one end of the outrigger box with a chamfered surface, and the boss is connected with the pressing plate through a threaded fastener.

6. The crane outrigger box welding positioning device of claim 2, wherein: The top plate is provided with a waist-shaped hole extending in a direction perpendicular to the overturning axis, and is further provided with a stop plate forming the lateral positioning protrusion, a threaded fastener for fixedly connecting with the stop plate is arranged in the waist-shaped hole, and the stop plate moves in the waist-shaped hole through the threaded fastener to realize adjustable position on the top plate along a direction perpendicular to the overturning axis.

7. The crane outrigger box welding fixture apparatus as defined in claim 1, wherein: The cross section of the fixed groove is T-shaped, and the fixed member in the fixed groove is a T-shaped bolt.

8. The crane outrigger box welding fixture apparatus as defined in claim 1, wherein: One end of the pressing plate on the front end support seat is sunk into the through hole of the outrigger box, and the other end is pressed on the edge of the through hole, and the pressing plate is fixedly pressed with the end support seat through a bolt.

9. The crane outrigger box welding fixture apparatus as defined in claim 1, wherein: The pressing plate on the front end support seat covers the through hole of the outrigger box and is fixedly pressed with the end support seat through a bolt.

10. The crane outrigger box welding fixture apparatus as defined in claim 1, wherein: The auxiliary support seat has a plurality of auxiliary support seats.

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