A device for detecting the resistance of a welded steel pipe for concrete pump delivery

Abstract

The present application relates to a kind of concrete pump conveying welded steel pipe resistance detection device, including rectangular machine case, box cavity is set in the machine case, opening is set in the top end wall of box cavity of machine case, side fixed block is fixedly connected in the right side of machine case top wall.The beneficial effects of the present application are as follows: the concrete pump conveying welded steel pipe resistance detection device, the box cavity of machine case is used to place the welded steel pipe for concrete pump conveying, the pipe is placed on the support filter screen, two bottom support plates are provided, the bottom wall of the upper end of the bottom support plate is fixedly connected with the plug group buckle, the plug group buckle is inserted into the plug group slot of the bottom support plate at the lower end, forming group connection, the plug group slot at the upper end of the bottom support plate is used to be inserted with the plug group buckle at the lower wall of the top support plate, forming group connection, connected together, used together, the bottom support plate and the top support plate can also be disassembled, leaving a single bottom support plate or two bottom support plates for use, more convenient to use when operating, adjust the rhythm according to the number of steel pipes, adapt to the use demand of itself.

Description

Technical Field

[0001] This invention relates to the field of steel pipe testing technology, specifically to a toughness testing device for welded steel pipes used in concrete pumps. Background Technology

[0002] When concrete pumps are used for transportation, pipe fittings are used, and welded steel pipes are one of them. During the manufacturing of welded steel pipes, the pipe fittings are tested. Since steel pipes are used to transport concrete materials, they need to have a certain degree of corrosion resistance. Therefore, corrosion resistance testing machines are used to test the pipe fittings. This corrosion resistance testing device is used to test the corrosion resistance of steel pipes.

[0003] The detection device generally has a simple structure with an internal cavity. A salt spray liquid is introduced into the detector body through an external pump. The liquid is then sprayed out through nozzles and orifices on the detector body, creating a salt spray environment inside the cavity to detect the pipes placed in the cavity. However, the orifice and nozzle structure is prone to corrosion after prolonged exposure to salt spray, which affects the spray nozzle diameter and thus the subsequent spraying effect. Summary of the Invention

[0004] The purpose of this invention is to provide a toughness testing device for welded steel pipes used in concrete pumping, in order to solve the problems of existing testing devices mentioned in the background art. These devices generally have a simple structure with an internal cavity. A salt spray liquid is introduced into the detector body through an external pump body. The liquid is then sprayed out through nozzles and spray holes on the device body, creating a salt spray environment inside the cavity, thereby testing the pipe fittings placed in the cavity. However, the spray holes and nozzles are prone to corrosion after prolonged exposure to salt spray, affecting the spray diameter and thus the subsequent spraying effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a toughness testing device for welded steel pipes used in concrete pumps, comprising a rectangular housing with a cavity inside. An opening is provided on the top wall of the housing near the cavity. A side block is fixed to the right side of the top wall of the housing. A top guide plate is placed on the upper end of the housing. Screws are threaded to the end walls of the side blocks, and the screws fasten the top guide plate and the side blocks. The top guide plate is in the shape of an inverted convex letter. The convex end wall of the top guide plate is inserted into the opening on the top wall of the cavity. A top spray hole is provided on the convex end wall of the top guide plate. A seepage hole is provided on the bottom wall of the housing near the cavity. A bottom guide plate is fixed to the bottom of the housing. A lower guide pipe is connected to the side wall of the bottom guide plate. An upper guide pipe is connected to the side wall of the top guide plate. The upper guide pipe communicates with the top spray hole. The lower guide pipe at the bottom guide plate communicates with the seepage hole.

[0006] Preferably, a middle plate is vertically fixed to the middle of the enclosure cavity of the chassis, and a plate groove is opened in the center of the middle plate.

[0007] Preferably, the middle plate has a flow guide port on both sides of the end wall near the plate groove, and a top slot is provided on the middle plate near the top wall of the plate groove.

[0008] Preferably, a top buckle is engaged with a top slot at the top of the middle plate, and a top buckle seat is fixedly connected to the top guide plate on its top wall.

[0009] Preferably, the middle plate has a side spray hole that communicates with the flow guide port on the side wall near the flow guide port, and the top buckle, top seat, and top flow guide plate have flow guide cavities that are connected to the plate groove and the upper flow guide pipe.

[0010] Preferably, the chassis has side openings on both end walls, and a side cover seat is snapped into the side opening.

[0011] Preferably, the side cover seat has a pair of L-shaped bottom support plates on its side wall, with the bottom support plate at the bottom being fixedly connected to the side cover seat.

[0012] Preferably, the top side of the side cover seat is provided with a top support plate, and both the top support plate and the bottom support plate are provided with insertion slots, and insertion buckles are engaged in the insertion slots.

[0013] Preferably, a support filter screen is fixedly connected to the inner side of both the top support plate and the bottom support plate, and a screw adjustment plate is threadedly connected to the end wall of both the bottom support plate and the top support plate, with an arc-shaped top loading port on the top wall of the screw adjustment plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention uses a housing cavity for placing welded steel pipe fittings for concrete pump transportation. The pipe fittings are placed on a support filter screen. Two bottom support plates are provided. The bottom wall of the upper bottom support plate is fixed with a snap-fit ​​assembly, which is inserted into the snap-fit ​​groove of the lower bottom support plate to form a connection. The snap-fit ​​groove of the upper bottom support plate is used to connect with the snap-fit ​​assembly at the lower wall of the top support plate to form a connection. They are connected together for joint use. Alternatively, the bottom support plate and the top support plate can be disassembled, leaving only one or both bottom support plates for use. This makes operation more convenient, and the rhythm can be adjusted according to the number of steel pipes to meet specific usage needs. 2. The screw adjustment discs at the end walls of the bottom and top support plates rotate to change their height position, facilitating adjustment. The screw adjustment disc itself has a barrier effect, separating the steel pipes placed on the support filter screen. At the same time, the top loading port at the top wall of the screw adjustment disc can also place individual steel pipes with smaller diameters, facilitating the classified placement of materials. This provides more diverse placement methods and maximizes the exposure of the end walls of the steel pipes, allowing them to fully contact the salt spray liquid for salt spray corrosion resistance testing. 3. The upper guide pipe end wall is connected to the pipeline. Through the external pump body and pipeline, the salt spray liquid is injected into the top guide plate and finally sprayed out from the top spray hole. At the same time, the top buckle and top seat at the bottom wall of the top guide plate guide the salt spray liquid, so that the liquid flows into the plate groove and is divided through the guide port. Finally, it is sprayed out from the side spray hole, so that the box cavity is fully filled with salt spray liquid and the steel pipe fittings are fully wetted by the liquid, thereby conducting corrosion resistance testing on the steel pipe. 4. The top slot is used to engage the top clip, and the opening formed at the top of the chamber is used to engage the top bracket, facilitating assembly and connection. The screws at the rear fixing block are tightened to secure the top guide plate, facilitating its assembly and disassembly. After use, the top guide plate can be removed for thorough cleaning to ensure that its end walls are not corroded by salt spray during idle periods, and that the top spray holes remain in normal condition for safe subsequent use. The downward seepage hole allows accumulated salt spray in the chamber to flow downwards, being guided through the bottom guide plate. Excess liquid is discharged through a connecting pipe at the bottom guide pipe. 5. The side cover is inserted laterally into the side of the chassis, and the bottom support plate and top support plate are inserted into the chamber along the side opening. This facilitates the testing of the corrosion resistance of the steel pipe fittings by the salt spray liquid in the chamber and makes it easy to remove and store the side cover from the chamber. The middle plate divides the chamber into two equal parts for use by two side cover seats, resulting in better classification effect during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a welded steel pipe toughness testing device for concrete pump conveying according to the present invention; Figure 2 This is a schematic diagram of the bottom support plate and screw adjustment plate structure of a welded steel pipe toughness testing device for concrete pump conveying according to the present invention; Figure 3 This is a schematic diagram of the insertion slot structure at the bottom support plate of a concrete pump conveying welded steel pipe toughness testing device according to the present invention. Figure 4 This is a top view of the top support plate of a concrete pump conveying welded steel pipe toughness testing device according to the present invention. Figure 5 This invention relates to a durability testing device for welded steel pipes used in concrete pumps. Figure 1 Enlarged structural diagram at point A in the middle.

[0016] In the diagram: 1. Chassis; 2. Chamber; 3. Middle plate; 4. Plate groove; 5. Flow guide port; 6. Side spray hole; 7. Top slot; 8. Top buckle; 9. Top seat; 10. Top spray hole; 11. Top flow guide plate; 12. Side fixing block; 13. Screw; 14. Upper flow guide pipe; 15. Lower seepage hole; 16. Bottom flow guide plate; 17. Lower flow guide pipe; 18. Side opening; 19. Side cover seat; 20. Bottom support plate; 21. Insertion slot; 22. Top support plate; 23. Insertion buckle; 24. Support filter screen; 25. Screw adjustment plate; 26. Top loading port. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0018] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] Please see Figure 1-5This invention provides a technical solution: a toughness testing device for welded steel pipes used in concrete pumps, comprising a rectangular housing 1, a cavity 2 inside the housing 1, an opening near the top wall of the housing 1 adjacent to the cavity 2, a side fixing block 12 fixedly connected to the right side of the top wall of the housing 1, a top guide plate 11 placed on the upper end of the housing 1, and screws 13 threadedly connected to the end wall of the side fixing block 12, the screws 13 fastening the top guide plate 11 and the side fixing block 12, the top guide plate 11 being an inverted convex shape. The top guide plate 11 has a convex end wall that is inserted into the opening at the top wall of the box cavity 2. A top spray hole 10 is provided at the convex end wall of the top guide plate 11. A bottom seepage hole 15 is provided at the bottom wall of the box cavity 2 near the bottom wall of the machine box 1. A bottom guide plate 16 is fixed to the bottom of the machine box 1. A bottom guide pipe 17 is connected to the side wall of the bottom guide plate 16. An upper guide pipe 14 is connected to the side wall of the top guide plate 11. The upper guide pipe 14 is connected to the top spray hole 10. The lower guide pipe 17 at the bottom guide plate 16 is connected to the bottom seepage hole 15. A middle plate 3 is vertically fixed to the middle of the cavity 2 of the chassis 1. A plate groove 4 is opened in the center of the middle plate 3. A guide port 5 is opened on both sides of the middle plate 3 near the plate groove 4. A top slot 7 is opened on the middle plate 3 near the top wall of the plate groove 4. A top clip 8 is engaged with a top clip groove 7 at the top of the middle plate 3. A top clip seat 9, which is fixed to the top guide plate 11, is fixed to the top wall of the top clip 8. A side spray hole 6, which is connected to the guide port 5, is opened on the side wall of the middle plate 3 near the guide port 5. A guide cavity is formed in the top clip 8, the top clip seat 9, and the top guide plate 11. The guide cavity is connected to the plate groove 4 and the upper guide pipe 14. Side openings 18 are provided on both sides of the chassis 1. A side cover seat 19 is snapped into the side opening 18. A pair of L-shaped bottom support plates 20 are provided on the side wall of the side cover seat 19. The bottom support plate 20 at the bottom is fixedly connected to the side cover seat 19. The top side of the side cover 19 is provided with a top support plate 22. Both the top support plate 22 and the bottom support plate 20 have insertion slots 21 at their end walls. Insertion buckles 23 are snapped into the insertion slots 21. Support filters 24 are fixed to the inner sides of the top support plate 22 and the bottom support plate 20. Threaded adjustment discs 25 are threaded to the end walls of the bottom support plate 20 and the top support plate 22. The top wall of the threaded adjustment disc 25 has an arc-shaped top loading port 26.

[0021] In summary, this welded steel pipe toughness testing device for concrete pumps, when in use, The housing 2 of the casing 1 is used to house the welded steel pipe fittings for concrete pump transportation. The pipe fittings are placed on the support filter screen 24. Two bottom support plates 20 are provided. The bottom wall of the upper bottom support plate 20 is fixed with the plug buckle 23. The plug buckle 23 is inserted into the plug groove 21 of the lower bottom support plate 20 to form a connection. The plug groove 21 of the upper bottom support plate 20 is used to connect with the plug buckle 23 on the lower wall of the top support plate 22 to form a connection. They are connected together for joint use. Alternatively, the bottom support plate 20 and the top support plate 22 can be disassembled, leaving only one bottom support plate 20 or both bottom support plates 20 for use. This makes operation more convenient. The rhythm can be adjusted according to the number of steel pipes to meet the user's needs. The screw adjustment plate 25 at the end wall of the bottom support plate 20 and the top support plate 22 rotates to change the height position of the screw adjustment plate 25, making it easy to adjust the screw adjustment plate 25. The screw adjustment plate 25 itself has a blocking effect, separating the steel pipes placed on the support filter screen 24. At the same time, the top loading port 26 at the top wall of the screw adjustment plate 25 can also place a single steel pipe with a small diameter, which is convenient for classifying and placing materials. The placement method is more diverse, maximizing the exposure of the end wall of the steel pipe, so that it can fully contact the salt spray liquid, thereby conducting salt spray corrosion resistance tests. The upper guide pipe 14 is connected to the pipeline. Through the external pump body and pipeline, the salt spray liquid is injected into the top guide plate 11 and finally sprayed out from the top spray hole 10. At the same time, the top buckle 8 and top seat 9 at the bottom wall of the top guide plate 11 guide the salt spray liquid, so that the liquid flows into the plate groove 4 and is divided through the guide port 5. Finally, it is sprayed out from the side spray hole 6, so that the box cavity 2 is fully filled with salt spray liquid. The steel pipe is fully wetted by the liquid, thereby conducting corrosion resistance testing on the steel pipe. The top slot 7 is used to engage the top buckle 8, and the opening formed at the top of the chamber 2 is used to engage the top bracket 9, which facilitates their assembly and connection. The screw 13 at the rear fixed block 12 is tightened to fix and position the top guide plate 11, which is convenient for the top guide plate 11 to be disassembled and assembled. After use, the top guide plate 11 can be removed and thoroughly cleaned to ensure that the end wall of the top guide plate 11 will not be corroded by salt spray liquid during idle period, and the top spray hole 10 remains in normal condition for safe use in the future. The downflow hole 15 is used to guide the salt spray liquid accumulated in the downflow chamber 2 through the bottom guide plate 16, and the lower guide pipe 17 is connected to the pipeline to discharge the excess liquid. The side cover seat 19 is inserted laterally into the side end of the chassis 1. The bottom support plate 20 and the top support plate 22 are inserted into the chamber 2 along the side opening 18, which facilitates the testing of the corrosion resistance of the steel pipe fittings by the salt spray liquid in the chamber 2 and makes it easy to retrieve and store the side cover seat 19 from the chamber 2. The middle plate 3 divides the chamber 2 into two equal parts for the two side cover seats 19 to be used together, which improves the classification effect when used.

[0022] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A durability testing device for welded steel pipes used in concrete pumps, comprising a rectangular housing (1), characterized in that: The chassis (1) has a cavity (2) inside. An opening is provided on the top wall of the chassis (1) near the cavity (2). A side block (12) is fixed to the right side of the top wall of the chassis (1). A top guide plate (11) is placed on the top of the chassis (1). A screw (13) is threaded to the end wall of the side block (12). The screw (13) fastens the top guide plate (11) and the side block (12). The top guide plate (11) is in the shape of an inverted convex letter. The convex end wall of the top guide plate (11) is inserted into the top of the cavity (2). In the opening at the wall, a top spray hole (10) is provided at the convex end wall of the top guide plate (11), and a seepage hole (15) is provided at the bottom wall of the casing (1) near the box cavity (2). A bottom guide plate (16) is fixed to the bottom of the casing (1). The side wall of the bottom guide plate (16) is connected to the lower guide pipe (17), and the side wall of the top guide plate (11) is connected to the upper guide pipe (14). The upper guide pipe (14) is connected to the top spray hole (10), and the lower guide pipe (17) at the bottom guide plate (16) is connected to the seepage hole (15).

2. The durability testing device for welded steel pipes used in concrete pumps according to claim 1, characterized in that: The middle plate (3) is vertically fixed to the middle of the cavity (2) of the chassis (1), and a plate groove (4) is opened in the center of the middle plate (3).

3. The durability testing device for welded steel pipes used in concrete pumps according to claim 2, characterized in that: The middle plate (3) has flow guides (5) on both sides of the end wall near the plate groove (4), and a top slot (7) is provided on the top wall near the plate groove (4).

4. The durability testing device for welded steel pipes used in concrete pumps according to claim 3, characterized in that: The top of the middle plate (3) has a top buckle (8) engaged in the top slot (7), and the top wall of the top buckle (8) is fixedly connected to the top guide plate (11) with a top seat (9).

5. The durability testing device for welded steel pipes used in concrete pumps according to claim 4, characterized in that: The middle plate (3) has a side spray hole (6) that communicates with the guide port (5) on the side wall near the guide port (5). The top buckle (8), top seat (9), and top guide plate (11) have guide cavities. The guide cavities are connected to the plate groove (4) and the upper guide pipe (14).

6. The durability testing device for welded steel pipes used in concrete pumps according to claim 5, characterized in that: The chassis (1) has side openings (18) on both sides of the end wall, and a side cover seat (19) is snapped into the side opening (18).

7. The durability testing device for welded steel pipes used in concrete pumps according to claim 6, characterized in that: The side cover seat (19) is provided with a pair of L-shaped bottom support plates (20) on its side wall, and the bottom support plate (20) at the bottom is fixedly connected to the side cover seat (19).

8. The durability testing device for welded steel pipes used in concrete pumps according to claim 7, characterized in that: The top side of the side cover (19) is provided with a top support plate (22), and both the top support plate (22) and the bottom support plate (20) have insertion slots (21) at their end walls. Insertion buckles (23) are engaged in the insertion slots (21).

9. The durability testing device for welded steel pipes used in concrete pumps according to claim 8, characterized in that: The inner sides of the top support plate (22) and the bottom support plate (20) are both fixed with a support filter screen (24). The end walls of the bottom support plate (20) and the top support plate (22) are both threaded with a screw adjustment plate (25). The top wall of the screw adjustment plate (25) has an arc-shaped top loading port (26).

Images