Gantry type saddle welding machining platform

Abstract

The invention discloses a gantry type saddle welding machining platform which comprises a gantry platform capable of being positioned in a sliding mode along a gantry platform rail and a roller frame on the rail, the gantry platform comprises a four-stand-column type gantry frame body, and a lifting platform is connected to two stand columns located on the same side of the roller frame rail. Each lifting platform is composed of a fixed platform and a telescopic platform which can stretch out and draw back relative to the fixed platform, the two lifting platforms are located on the inner side of the gantry platform and independently ascend and descend, and telescopic driving devices of the two telescopic platforms are independently arranged. By means of the machining platform, saddle welding machining of workpieces within a large size range can be completed more efficiently, the labor intensity of workers can be relieved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a processing platform, in particular to a processing platform facilitating saddle welding. Background Art

[0002] All along, the welding of pipe joints of steam drums and container products generally uses a built welding platform for welding. The built welding platform mainly uses temporarily built scaffolding. However, the scaffolding has a long construction period, and there are safety hazards in construction and demolition. At the same time, the construction quality of the scaffolding is uneven. With the gradual increase in the industry's requirements for the working efficiency of saddle welding, new welding-related equipment is urgently needed to meet the requirements. For this reason, such as CN201685037U and CN204413434U consider building a welding platform by means of the cylinder body itself of the welding object of saddle welding. However, the defect of this method is that the applicable cylinder diameter range is limited. There is also as disclosed in CN207414560U, using a support platform that can automatically rotate to complete saddle welding. Its support platform can only complete the welding function, but for the operations of preparation steps such as hole cutting and nozzle lifting, other processing equipment still needs to be used to complete.

[0003] CN113427181A discloses a welding system. It places the pipeline on a welding roller frame and sets a gantry welding frame above the pipeline. CN215146037U discloses the gantry welding frame used in this welding system. It is to set an integral lifting platform on the gantry frame body that can be lifted and positioned relative to the columns of the gantry frame body to install welding equipment. In addition, an internal circumferential seam welder can be set beside the gantry frame. Through the cooperation of the roller frame and the gantry welding frame, the longitudinal seam, outer circumferential seam and inner circumferential seam of the pipeline are welded. However, the above device cannot be directly used for saddle welding.

[0004] Therefore, at present, there is no processing platform suitable for saddle welding and convenient for processing available for use. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a gantry-type saddle welding processing platform. With the help of this processing platform, the operation can be facilitated, so as to more efficiently complete the saddle welding processing of workpieces within a larger size range, and can reduce the labor intensity of workers and improve production efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a gantry saddle welding processing platform, including a gantry platform that can be slidably positioned along the gantry platform track. Inside the gantry platform track, a roller rack track is provided, and a roller rack is arranged on the roller rack track. The gantry platform includes a four-column gantry frame body. Positioning members that can be lifted and positioned along the columns are provided on each column. On the positioning members on the two columns on the same side of the roller rack track, a lifting platform is connected. The lifting platform consists of a fixed platform connected to the positioning member and a telescopic platform that can be telescoped relative to the fixed platform. The two lifting platforms are located inside the gantry platform and are lifted independently, and the telescopic drive devices of the two telescopic platforms are independently arranged. The present invention changes the consistent idea of the original saddle welding auxiliary processing platform. Its platform is a split-type platform, composed of two independently lifted and telescopic platforms on both sides. It can flexibly adjust the lifting height and telescopic length of any one side platform according to the workpiece size. If necessary, it can also adjust the lifting height and telescopic length of both side platforms at the same time. It can be achieved only by reasonably designing the electric control mode of the lifting drive device or the telescopic drive device according to the existing electric control technology. Therefore, it is convenient to apply and there is no need to build a platform separately according to the specific shape of the workpiece.

[0007] To increase the safety of the platform, a fixed fence is provided on the fixed platform, and a telescopic fence that can move with the telescopic platform is provided on the telescopic platform. A fence fixing column is installed at the front end of the telescopic platform. The two ends of the telescopic fence are connected between the fence fixing column and the end of the fixed fence. Thus, the fence can extend with the telescopic platform and provide anti-fall protection, and there is no need to design a separate extension drive device for the fence.

[0008] The lifting and positioning of the positioning member along the column can adopt existing technologies, not limited to the related technologies in CN215146037U mentioned above. It is recommended to adopt a mechanism driven by a servo motor: the platform lifting device of the lifting platform includes a servo motor and a reducer located at the top of the gantry platform. The servo motor is synchronously connected to the positioning members on the two columns through the reducer, the transmission shaft, and the transmission sprocket mechanism. That is, the two positioning members connected to the same lifting platform will be lifted synchronously. The transmission sprocket mechanism includes a sprocket installed on the transmission shaft and a lifting chain that cooperates with the sprocket. Thus, the positioning of the lifting platform is more accurate, and the positioning member is not easily jammed.

[0009] To increase the safety of the equipment, a mechanical anti-fall device is also installed on the gantry platform. The mechanical anti-fall device includes a rack arranged along the column, a tension spring and a hook installed on the positioning member. The end of the chain of the transmission sprocket mechanism is connected to the hook hinged on the positioning member. The two ends of the tension spring are respectively connected to the hook and the positioning member and are eccentrically arranged with respect to the hinge shaft of the hook. When the chain breaks and the tension spring resets, the hook can rotate around the hinge shaft and engage with the tooth groove of the rack to prevent the platform from accidentally falling.

[0010] To be able to automatically adjust the telescopic length, a safety edge is installed at the front end of the telescopic platform. The telescopic drive device is signal-connected to the safety edge. Once the safety edge comes into contact with the workpiece, the telescopic movement of the platform can be immediately stopped.

[0011] The specific structure of the recommended telescopic platform is as follows: The telescopic platform is composed of a support plane and two or more parallel telescopic beams fixedly connected under the support plane. The telescopic beams are slidably connected in the guide rails under the fixed platform. The electric cylinder is installed on the bottom surface of the fixed platform as the telescopic drive device, and its telescopic end is connected to the rear end of the telescopic platform and is driven by a second servo motor, which can not only achieve automatic control but also realize stable and frequent telescopic adjustment or the telescopic platform's retraction and reset with the help of the guide rails.

[0012] An intelligent KBK lifting tool is installed on the top beam of the gantry platform. There is a cantilever beam on one side of the outside of the gantry platform, and an electric hoist is installed on the cantilever beam. The lifting tool is integrally integrated into the gantry, which facilitates operations such as saddle welding and its preliminary preparations such as nozzle lifting and hole cutting.

[0013] The beneficial effects of the present invention are as follows: It saves the time for erecting scaffolding required for saddle welding. With the help of this platform, auxiliary processing of welding processes such as hole cutting and nozzle lifting for the cylinder can be completed, which is convenient for operation, greatly improves safety, and also improves work efficiency and reduces the labor intensity of workers. Description of the Drawings

[0014] Figure 1 It is the overall structure schematic diagram of the gantry-type saddle welding processing platform of the present invention.

[0015] Figure 2 It is Figure 1 the overall structure schematic diagram of the gantry platform in

[0016] Figure 3 It is Figure 2 the schematic diagram of the lifting drive device of the positioning part of the gantry platform in

[0017] Figure 4 It is Figure 2 the schematic diagram of the connection relationship between the telescopic platform and the fixed platform of the gantry platform in

[0018] Figure 5 It is Figure 2 the schematic diagram of the mechanical anti-falling device in

[0019] The markings in the figure are: 10 - gantry platform track, 80 - roller rack track, 1 - column, 2 - positioning part, 3 - lifting platform, 101 - top beam, 5 - intelligent KBK lifting appliance, 6 - workpiece, 7 - electric hoist, 31 - fixed platform, 32 - telescopic platform, 41 - servo motor, 42 - reducer, 43 - transmission shaft, 44 - sprocket, 45 - lifting chain, 61 - rack, 62 - tension spring, 63 - hook, 102 - cantilever beam, 310 - fixed fence, 311 - guide rail, 320 - telescopic fence, 321 - fence fixing column, 322 - safety edge, 323 - supporting plane, 324 - telescopic beam, 100 - gantry platform, 300 - telescopic drive device, 400 - platform lifting device, 500 - sliding contact wire, 800 - roller rack. Detailed implementation mode

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] Embodiment: As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the gantry - type saddle - welding processing platform of the present invention includes a gantry platform 100 that can be slidably positioned along the gantry platform track 10. Inside the gantry platform track 10, there is a roller rack track 80, and a roller rack 800 is arranged on the roller rack track 80. The gantry platform 100 includes a four - column gantry frame body, and the four - column gantry frame body can travel on the gantry platform track 10. Its traveling mechanism can adopt the same traveling mechanism as that of an existing gantry crane, etc. On each of the four columns 1 of the gantry frame body, there is a positioning part 2 that can be lifted and positioned along the column 1. On the positioning parts 2 on the two columns 1 on the same side of the roller rack track 80, a lifting platform 3 is connected. The lifting platform 3 is composed of a fixed platform 31 connected to the positioning part 2 and a telescopic platform 32 that can be telescopic relative to the fixed platform 31. The two lifting platforms 3 are located inside the gantry platform 100 and can be lifted independently. The telescopic drive devices 300 of the two telescopic platforms 32 are set independently. Thus, the lifting platform 3 rises and falls with the lifting and lowering of the two positioning parts 2 on one side on the column 1. After rising to the set position, the telescopic platform 32 can extend relative to the fixed platform 31 and extend towards the position of the workpiece 6 placed on the roller rack 800 until it matches the position where the saddle - welding of the pre - installed pipe is to be completed. The gantry platform of the present invention is very suitable for various saddle - welding processes. Because, in addition to being able to adapt to different workpiece heights, it can also be flexibly adapted to the welding processing of pipes with different sizes or at different positions, and the adjustment is convenient. There is no need to independently set up a welding platform, which is very convenient.

[0022] As Figure 1As shown, outside the four-column gantry frame, a sliding contact wire 500 for power supply to the processing platform can be provided.

[0023] As Figure 1 , Figure 2 , Figure 4 As shown, a fixed fence 310 is provided on the fixed platform 31, and a telescopic fence 320 that can move together with the telescopic platform 32 is provided on the telescopic platform 32. The telescopic fence 320 can adopt a rhombus-shaped parallelogram structure. A fence fixing column 321 is installed at the front end of the telescopic platform 32. Both ends of the telescopic fence 320 are connected between the fence fixing column 321 and the end of the fixed fence 310. The fence fixing column 321 can be selectively fixed to the front end of the telescopic platform 32 in a detachable manner. When the fence fixing column 321 extends with the telescopic platform 32, the telescopic fence 320 can be pulled to extend accordingly, providing anti-fall protection for the operation on the telescopic platform without the need for an additional fence telescopic drive device. Alternatively, after the telescopic platform 32 extends in place, the telescopic fence 320 can be manually pulled, and the fence fixing column 321 can be fixed to the front end of the telescopic platform 32.

[0024] As Figure 2 , Figure 3 As shown, the platform lifting device 400 of the lifting platform 3 includes a servo motor 41 and a speed reducer 42 located at the top of the gantry platform 100. The servo motor 41 is synchronously connected to the positioning members 2 on both side columns 1 through the speed reducer 42, a transmission shaft 43, and a transmission sprocket mechanism. The transmission sprocket mechanism includes a sprocket 44 installed on the transmission shaft 43 and a lifting chain 45 that cooperates with the sprocket. The servo motor adjusts the height of the positioning member 2 on the column through the sprocket 44 and the lifting chain 45. Such a lifting drive device can control the synchronous lifting of the positioning members on two gantry frame columns on the same side of the axis of the roller rack, accurately controlling the lifting height of the lifting platform.

[0025] To further improve safety, a safety locking device can also be configured for the positioning member. The safety locking device is a limiting structure that is detachably connected to the positioning member and can cooperate with the strip 61. After being fixed, the safety locking device is interlocked with the rack 61 to lock the positioning member, thereby fixing the height of the lifting platform. After the heights of the two side lifting platforms are locked, a temporary jump board and guardrail can be lapped and fixed between the two side lifting platforms to further facilitate the operation. During the lifting process, the locking relationship between the safety locking device and the rack 61 is released.

[0026] As Figure 5As shown, a mechanical anti-falling device is also installed on the gantry platform 100. The mechanical anti-falling device includes a rack 61 arranged along the column 1, a tension spring 62 and a hook 63 installed on the positioning member 2. The end of the chain 45 of the transmission sprocket mechanism is connected to the hook 63 hinged on the positioning member 2. The two ends of the tension spring 62 are respectively connected to the hook 63 and the positioning member 2 and are eccentrically arranged with respect to the hinge shaft of the hook 63. When the chain 45 breaks and the tension spring 62 is reset, the hook 63 can rotate around the hinge shaft and engage with the tooth groove of the rack 61. This structure functions in extreme cases and can further ensure the safety of operations on the platform.

[0027] A safety edge 322 is installed at the front end of the telescopic platform 32. The telescopic drive device 300 is signal-connected to the safety edge 322. Once the safety edge 322 touches the workpiece, the telescopic drive device 300 will stop. The above-mentioned automatic control can be realized by borrowing the automatic control device of the existing travel switch. A rubber strip can also be installed at the front end of the safety edge 322 as an anti-collision design. The purpose of this design is to automatically control the telescopic length. Compared with visually observing and manually controlling the telescopic length, it can avoid hitting the workpiece, and the telescopic speed can also be controlled to avoid hitting the workpiece.

[0028] As Figure 4 As shown, the telescopic platform 32 is composed of a support plane 323 and two or more parallel telescopic beams 324 fixedly connected under the support plane 323. The telescopic beams 324 can be slidably connected in the guide rails 311 under the fixed platform. The electric cylinder is installed on the bottom surface of the fixed platform 31 as the telescopic drive device 300, and its telescopic end is connected to the rear end of the telescopic platform 32 and is driven by the second servo motor. Thus, the telescopic adjustment of the telescopic platform 32 relative to the fixed platform 31 is realized.

[0029] As Figure 2 As shown, an intelligent KBK lifting tool 5 is installed on the top beam 101 of the gantry platform 100. A cantilever beam 102 is provided on one side outside the gantry platform 100, and an electric hoist 7 is installed on the cantilever beam 102. By using the electric hoist 7, the ground workpieces and tools can be lifted onto the platform by lifting the turnover basket. The intelligent KBK lifting tool 5 can then lift the parts in the turnover basket on the platform to the required position for saddle welding, or other group welding or operations.

[0030] The working process of the gantry saddle welding processing platform of the present invention is as follows: all components of the processing platform are in the initial state → hoist the workpiece (cylinder) onto the roller rack → move the gantry platform to the working position near the workpiece → the operator reaches the fixed platform → operate the electric hoist to lift tools, workpieces (cylinder sections), etc. from devices such as handcarts onto the fixed platform using a lifting turnover basket → lift the lifting platform to a suitable position according to the height of the workpiece → lock the platform height → extend the telescopic platform in place → operate the KBK to hoist the workpiece (cylinder section) to the welding position → perform saddle welding work → after welding is completed, the personnel return to the fixed platform → retract the telescopic platform → the height of the lifting platform returns to the initial position → move the gantry platform to the parking position → the work is completed.

[0031] Applying the gantry saddle welding processing platform of the present invention can save the time for building a temporary welding platform, and is mainly used to complete saddle welding. It is convenient to operate, has guaranteed safety, improves work efficiency, and reduces the labor intensity of workers.

Claims

1. Gantry saddle welding processing platform, including a gantry platform (100) that can be slidably positioned along the gantry platform track (10). Inside the gantry platform track (10), there is a roller rack track (80), and a roller rack (800) is arranged on the roller rack track (80). The gantry platform (100) includes a four-column gantry frame body, and positioning members (2) that can be lifted and positioned along the columns (1) are arranged on each column (1). It is characterized in that: at Lifting platforms (3) are connected to positioning members (2) on two columns (1) on the same side of the roller rack track (80). The lifting platform (3) consists of a fixed platform (31) connected to the positioning member (2) and a telescopic platform (32) that is telescopic relative to the fixed platform (31). The two lifting platforms (3) are located inside the gantry platform (100) and lift independently, and the telescopic drive devices (300) of the two telescopic platforms (32) are independently arranged.

2. The gantry saddle welding processing platform according to claim 1, characterized in that: A fixed fence (310) is provided on the fixed platform (31), and a telescopic fence (320) that can move with the telescopic platform (32) is provided on the telescopic platform (32). A fence fixing column (321) is installed at the front end of the telescopic platform (32), and both ends of the telescopic fence (320) are connected between the fence fixing column (321) and the end of the fixed fence (310).

3. The gantry saddle welding processing platform according to claim 1, characterized in that: The platform lifting device (400) of the lifting platform (3) includes a servo motor (41) and a speed reducer (42) located at the top of the gantry platform (100). The servo motor (41) is synchronously connected to the positioning members (2) on the two side columns (1) through the speed reducer (42), a transmission shaft (43), and a transmission sprocket mechanism. The transmission sprocket mechanism includes a sprocket (44) installed on the transmission shaft (43) and a lifting chain (45) that mates with the sprocket.

4. The gantry saddle welding processing platform according to claim 3, characterized in that: A mechanical anti-falling device is also installed on the gantry platform (100). The mechanical anti-falling device includes a rack (61) arranged along the column (1), a tension spring (62) and a hook (63) installed on the positioning member (2). The end of the chain (45) of the transmission sprocket mechanism is connected to the hook (63) hinged to the positioning member (2). Both ends of the tension spring (62) are connected to the hook (63) and the positioning member (2) respectively and are eccentrically arranged with respect to the hinge shaft of the hook (63). When the chain (45) breaks and the tension spring (62) resets, the hook (63) can rotate around the hinge shaft and engage with the tooth groove of the rack (61).

5. The gantry saddle welding processing platform according to any one of claims 1 to 4, characterized in that: A safety edge (322) is installed at the front end of the telescopic platform (32), and the telescopic drive device (300) is signal-connected to the safety edge (322).

6. The gantry saddle welding processing platform according to any one of claims 1 to 4, characterized in that: The telescopic platform (32) consists of a support plane (323) and two or more parallel telescopic beams (324) fixedly connected under the support plane (323). The telescopic beams (324) are slidably connected in a guide rail (311) under the fixed platform. An electric cylinder is installed on the bottom surface of the fixed platform (31) as the telescopic drive device (300), and its telescopic end is connected to the rear end of the telescopic platform (32) and is driven by a second servo motor.

7. The gantry saddle welding processing platform according to any one of claims 1 to 4, characterized in that: An intelligent KBK lifting tool (5) is installed on the top beam (101) of the gantry platform (100). A cantilever beam (102) is provided on one side outside the gantry platform (100), and an electric hoist (7) is installed on the cantilever beam (102).

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