Method, apparatus and production line for processing steel bar trusses

Abstract

The present application relates to the field of building, provide a kind of processing method, processing equipment and processing production line of steel bar truss, steel bar truss includes three main reinforcement and two side reinforcement, three main reinforcement is enclosed into three prism, and side reinforcement is sine wave, and is respectively arranged in two side of three prism.The processing method is first matched with main reinforcement and side reinforcement, then determine the shearing plane of steel bar truss, then weld the contact point of side reinforcement and main reinforcement.When the contact point is located in the shearing plane, using the first current welds the first time length, the rest of the contact point uses the second current welds the second time length, finally, the steel bar truss is sheared in the shearing plane position.The first current is greater than the second current and / or the first time length is greater than the second time length, that is, the contact point can be welded using large current, or the welding time of contact point is prolonged, or the welding time is prolonged while increasing the welding current, so as to strengthen the strength of weld point, prevent the problem of weld point fracture when shearing.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of construction, in particular to a processing method, processing equipment and processing production line of steel bar truss. BACKGROUND

[0002] The steel bar truss includes three main bars and two side bars. The three main bars are arranged in parallel and in a triangular distribution. The two side bars are in a sinusoidal wave shape. The side bars are arranged between the main bar at the top and the main bar at the bottom. The wave crest of the side bar is welded to the main bar at the top, and the wave trough of the side bar is welded to the main bar at the bottom. After welding, a triangular truss is formed. Then, the truss is sent to a shearing mechanism by a traction mechanism, and the shearing mechanism shears the truss according to the required length.

[0003] At present, all the welding points of the main bars and the side bars of the steel bar truss are welded by resistance welding using the same welding current for the same length of time. However, for the welding points at the shearing position of the truss, the truss needs to be cut into two parts when shearing. At this time, the welding point strength is insufficient, which leads to the problem of cracking of the main bar and the side bar at the shearing position. SUMMARY

[0004] The present application provides a processing method, processing equipment and processing production line of steel bar truss to solve the defects of insufficient welding point strength and easy cracking of the main bar and the side bar during shearing in the prior art, and to achieve the effect of strengthening the welding point strength at the shearing position.

[0005] The present application provides a processing method and processing equipment of steel bar truss, which comprises:

[0006] The steel bar truss includes three main bars and two side bars. The three main bars are arranged in parallel and in a triangular distribution. The two side bars are in a sinusoidal wave shape. The side bars are arranged between the main bar at the top and the main bar at the bottom. The wave crest of the side bar is welded to the main bar at the top, and the wave trough of the side bar is welded to the main bar at the bottom. After welding, a triangular truss is formed. Then, the truss is sent to a shearing mechanism by a traction mechanism, and the shearing mechanism shears the truss according to the required length.

[0007] The shearing plane of the steel bar truss is determined.

[0008] The contact points of the side bars and the main bars are welded. When the contact points are located at the shearing plane, the first current is used for welding for the first length of time, and the second current is used for welding for the second length of time for the remaining contact points. The first current is greater than the second current and / or the first length of time is greater than the second length of time.

[0009] The steel bar truss is sheared along the shearing plane.

[0010] According to the processing method of the steel bar truss provided by the present application, before the steel bar truss is sheared along the shearing plane, the welding points are cooled in a liquid cooling manner.

[0011] The processing method of the steel bar truss provided by the application further comprises the following steps:

[0012] The steel bar truss is placed on a moving platform, a welding machine, a liquid cooling device and a shearing machine are arranged on a moving path of the moving platform, and the moving platform drives the steel bar truss to pass through the welding machine, the liquid cooling device and the shearing machine in sequence.

[0013] The processing method of the steel bar truss provided by the application further comprises the following steps:

[0014] The length required for shearing the steel bar truss is determined as a first length.

[0015] The distance between the welding machine and the shearing machine is determined as a second length, and the first length is greater than the second length.

[0016] The difference between the first length and the second length is calculated and determined as a third length.

[0017] When the shearing machine shears the steel bar truss, a position at a distance of the third length from the welding machine is determined as the position of the shearing plane, and the shearing plane is located on the side of the welding machine away from the shearing machine.

[0018] The processing method of the steel bar truss provided by the application further comprises the following steps:

[0019] The processing method of the steel bar truss provided by the application further comprises the following steps:

[0020] The step distance of the moving platform is determined as a fourth length.

[0021] When the shearing machine shears the steel bar truss, the step number of the steel bar truss moving the third length is calculated according to the third length and the fourth length.

[0022] When the moving platform reaches the calculated step number, the welding machine welds the contact points of the side bars and the main bars for a first length of time using a first welding current.

[0023] The processing method of the steel bar truss provided by the application further comprises the following steps:

[0024] The application further provides a processing device of a steel bar truss, which comprises a moving platform, a welding machine, a shearing machine and a controller.

[0025] According to the steel bar truss processing equipment provided by the application, the welding machine comprises two welding machines, one of which is used for welding the contact points between the side bars and the top main bars, and the other is used for welding the contact points between the side bars and the bottom main bars; and / or, a liquid cooling device is arranged between the shearing machine and the welding machine.

[0026] The application further provides a steel bar truss processing production line comprising the steel bar truss processing equipment.

[0027] The application provides a steel bar truss processing method. The steel bar truss comprises three main bars and two side bars. The three main bars are arranged in parallel and form a triangular prism. The two side bars are in a sine wave shape and are arranged on two sides of the triangular prism and between the two main bars on the sides. The processing method first assembles the main bars and the side bars, then determines the shearing plane of the steel bar truss, and then welds the contact points between the side bars and the main bars. During the welding process, when the contact points are on the shearing plane, a first current is used to weld for a first time length, and a second current is used to weld for a second time length for the remaining contact points. Finally, the steel bar truss is sheared at the shearing plane position, and a steel bar truss of a required length is obtained. The first current is greater than the second current and / or the first time length is greater than the second time length, that is, a large current can be used to weld the contact points, or the welding time of the contact points can be prolonged, or the welding time is prolonged while the welding current is increased, so as to strengthen the welding strength of the contact points corresponding to the shearing plane and prevent the problem of welding point fracture during shearing.

[0028] Further, the steel bar truss processing equipment and the steel bar truss processing production line provided by the application have the same advantages as described above because the steel bar truss is processed by using the steel bar truss processing method described above. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0030] Figure 1 is a structural schematic view of the steel bar truss processing equipment provided by the application;

[0031] Figure 2 is a flowchart of the steel bar truss processing method provided by the application;

[0032] REFERENCE SIGNS:

[0033] 100: Mobile platform; 200: Welding machine; 300: Shearing machine; 400: Liquid cooling device; 500: Steel truss; 510: Main reinforcement; 520: Side reinforcement. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0035] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present 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. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of the embodiments of the present 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 the embodiments of the present invention based on the specific circumstances.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0038] The following is combined Figure 1 and Figure 2The embodiments of the present invention will be described below. It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute a limitation thereof.

[0039] An embodiment of the present invention provides a method for processing a steel truss, comprising the following steps:

[0040] Step S100: Assemble the steel truss 500;

[0041] The steel truss 500 includes three main reinforcing bars 510 and two side reinforcing bars 520. The main reinforcing bars 510 are straight steel bars, and the side reinforcing bars 520 are sinusoidal steel bars. The three main reinforcing bars 510 are arranged in parallel and form a triangular prism structure. One side reinforcing bar 520 is provided on each of the two sides of the triangular prism structure formed by the three main reinforcing bars 510, and the side reinforcing bars 520 are located between the two main reinforcing bars 510 on their respective sides.

[0042] For example, the plane containing the axes of two main reinforcing bars 510 is a horizontal plane, and another reinforcing bar is located in the middle position above the two main reinforcing bars 510. One side reinforcing bar 520 is located between the upper main reinforcing bar 510 and one of the lower main reinforcing bars 510, and another side reinforcing bar 520 is located between the upper main reinforcing bar 510 and another lower main reinforcing bar 510.

[0043] This step involves assembling the main reinforcement bars 510 and side reinforcement bars 520 according to the layout described above.

[0044] Step S200: Determine the shear plane of the steel truss 500;

[0045] The steel truss 500 needs to be cut to the required length. The plane that is located at the shearing position and is perpendicular to the main reinforcement 510 is the shearing plane. Cutting the steel truss 500 along the shearing plane will yield the steel truss 500 of the required length.

[0046] In step S300, the contact point between the side reinforcement 520 and the main reinforcement 510 is welded. When the contact point is located on the shear plane, the first current is used for welding for a first duration, and the other contact points are welded for a second duration using a second current. The first current is greater than the second current and / or the first duration is greater than the second duration.

[0047] This step involves welding the contact points between the side ribs 520 and the main ribs 510. The contact points are located at the crests of the side ribs 520 where they contact the upper main ribs 510, and also at the troughs of the side ribs 520 where they contact the lower main ribs 510. When the contact points are on the shear plane, a first current is used to weld the shear points for a first duration, and a second current is used to weld the remaining contact points for a second duration.

[0048] The first current can be greater than the second current and / or the first duration can be greater than the second duration, which means the following situations are possible:

[0049] The first kind is that the first current is greater than the second current, and the first duration is equal to the second duration;

[0050] The second kind is that the first current is equal to the second current, and the first duration is greater than the second duration;

[0051] The third kind is that the first current is greater than the second current, and the first duration is greater than the second duration.

[0052] In the above three cases, whether the welding current is increased or the welding time is prolonged, the strength of the welding point can be enhanced, the contact point located on the shearing plane is welded by the first current for the first duration, and thus the strength of the welding point can be effectively enhanced, and the welding point cracking is prevented, so that the side rib 520 and the main rib 510 are separated.

[0053] In step S400, the steel bar truss 500 is sheared along the shearing plane.

[0054] In this step, the steel bar truss 500 is sheared according to the determined shearing plane, and finally the steel bar truss 500 with the required length is obtained.

[0055] At present, the welding point is cooled by natural air cooling before the steel bar truss 500 is sheared, but the distance from the welding position to the shearing position of the steel bar truss 500 is short, and when the welding is completed to the shearing position, the welding point cannot be effectively cooled, and thus the strength of the welding point cannot reach the required strength.

[0056] Therefore, in order to quickly cool the welding point and reach the required strength, the method for processing the steel bar truss 500 further includes the following steps before step S400 is performed:

[0057] In step S500, the welding point is cooled by liquid cooling.

[0058] The liquid cooling is more reliable and has higher cooling efficiency than the natural air cooling, the temperature of the cooling water for liquid cooling can be adjusted, and the natural air cooling needs to rely on the ambient temperature for cooling, and the ambient temperature fluctuates greatly, and when the temperature is high, the cooling rate of the welding point also decreases.

[0059] In some embodiments of the present application, after the steel bar truss 500 is grouped in step S100, the following steps need to be further performed:

[0060] In step S600, the steel bar truss 500 is placed on the moving platform 100, the moving path of the moving platform 100 is provided with the welding machine 200, the liquid cooling device 400 and the shearing machine 300, and the moving platform 100 drives the steel bar truss 500 to pass through the welding machine 200, the liquid cooling device and the shearing machine 300 in sequence.

[0061] The welding, cooling and shearing of the steel bar truss 500 provided by the embodiment of the present application all need to use the moving platform 100 to transfer, and in the process of transferring, the welding, cooling and shearing operations are completed.

[0062] The moving platform 100 can be a stepping platform, and the welding machine 200, the liquid cooling device 400 and the shearing machine 300 are arranged on the moving path of the moving platform 100. The moving platform 100 drives the steel bar truss 500 to pass through the welding machine 200, the liquid cooling device 400 and the shearing machine 300 in turn.

[0063] Specifically, the contact points are located at the peak and valley positions of the side bar 520. Since the shearing plane can be located at the peak position or the valley position, the moving platform 100 drives the steel bar truss 500 to move a length of a half cycle of the sine wave each time. In this way, no matter whether the shearing plane is located at the peak position or the valley position, it can be moved to the shearing machine 300 for shearing.

[0064] The welding machine 200 can be provided with two, one for welding the contact points of the peak of the side bar 520 and the main bar 510, and the other for welding the contact points of the valley and the main bar 510. In this way, the welding machine 200 needs to be welded once every two times of the stepping platform.

[0065] The liquid cooling device 400 is arranged between the welding machine 200 and the shearing machine 300. After the contact points are welded at the position of the welding machine 200, they pass through the liquid cooling device 400 in the process of moving towards the shearing machine 300, and the cooling of the welding points is completed when passing through the liquid cooling device 400. In this way, the strength of the welding points can be enhanced, and the problem of cracking during shearing can be prevented.

[0066] In some embodiments of the present application, for step S200, determining the shearing plane of the steel bar truss 500, the following steps are included:

[0067] Step S210, determining that the length required to be sheared by the steel bar truss 500 is a first length;

[0068] Step S220, determining that the distance between the welding machine 200 and the shearing machine 300 is a second length, wherein the first length is greater than the second length;

[0069] Step S230, calculating and determining the difference between the first length and the second length as a third length;

[0070] Step S240, when the shearing machine 300 shears the steel bar truss 500, determining that the position with a distance of the third length from the welding machine 200 is the position of the shearing plane, and the shearing plane is located on the side of the welding machine 200 away from the shearing machine 300.

[0071] Firstly, the length of the required steel bar truss 500 is determined as a first length. Then the distance between the welding machine 200 and the shearing machine 300 is determined as a second length, wherein the first length is greater than the second length. The difference between the first length and the second length is calculated as a third length. Finally, when the shearing machine 300 shears the steel bar truss 500, the distance between the shearing machine 300 and the required shearing plane is exactly the first length of the required steel bar truss 500. The third length is obtained by subtracting the second length of the distance between the shearing machine 300 and the welding machine 200 from the first length, and the distance between the welding machine 200 and the shearing plane is the third length.

[0072] In some embodiments of the present application, in order to make the shearing plane located at the contact point of the side bar 520 and the main bar 510, the first length needs to be an integer multiple of half the period length of the sine wave, so that the contact point at the wave peak or the contact point at the wave valley can be located on the shearing plane.

[0073] In some embodiments of the present application, the welding of the contact point of the side bar 520 and the main bar 510 includes the following steps:

[0074] Step S310, determining the step distance of the moving platform 100 as a fourth length;

[0075] Step S320, when the shearing machine 300 shears the steel bar truss 500, according to the third length and the fourth length, the step number of the steel bar truss 500 moving the third length is calculated.

[0076] Step S330, when the moving platform 100 reaches the calculated step number, the welding machine 200 welds the contact point of the side bar 520 and the main bar 510 with the first welding current for a first time length.

[0077] Specifically, the moving platform 100 is a step platform, which is an intermittent conveying mode, and each movement is a fixed distance. The step distance of each movement is determined as the fourth length, so that the fourth length is equal to the length of half the period of the side bar 520, so that each contact point located at the wave peak or the wave valley can be moved to the position corresponding to the shearing machine 300.

[0078] When one of the shearing planes moves to the position of the shearing machine 300 and the shearing machine 300 shears, the step number of the steel bar truss 500 moving the third length is started to be calculated, and the third length is the distance of the next shearing plane from the welding machine 200.

[0079] It should be noted that when the distance between the shearing machine 300 and the shearing plane of the first length to be sheared coincides with the contact point located at the wave crest, the third length refers to the distance between the shearing plane to be sheared and the welding machine 200 above. Similarly, when the distance between the shearing machine 300 and the shearing plane of the first length to be sheared coincides with the contact point located at the wave trough, the third length refers to the distance between the shearing plane to be sheared and the welding machine 200 below.

[0080] The quotient obtained by dividing the third length by the distance of each step of the moving platform 100, i.e., the third length divided by the fourth length, is the number of steps required.

[0081] wherein the first length and the second length are both integer multiples of the distance between adjacent contact points, and the third length is also an integer multiple of the distance between adjacent contact points, and the fourth length is the distance between adjacent contact points, so the third length is an integer multiple of the fourth length.

[0082] When the moving platform 100 steps to the calculated number of steps, the contact point on the shearing plane is located at the welding position of one of the welding machines 200, at which time the welding machine 200 can use the first current to weld for the first time length, so that the position of the contact point to be sheared can be accurately identified and welded with a large current and a long time to improve the strength of the welding point and prevent cracking.

[0083] For example, the first length can be 10 meters, the second length can be 8 meters, the third length is 2 meters, and the length of one period of the side reinforcement is 1 meter, so the fourth length can be 0.5 meters. Therefore, the step distance of the moving platform 100 is 0.5 meters, and when the shearing machine 300 shears the steel truss 500, the distance between the next shearing plane and the welding machine 200 is 2 meters, at which time the shearing plane needs to be stepped 4 times to move to the welding machine 200 for welding.

[0084] The embodiments of the present application also provide a steel truss processing device, which comprises a moving platform 100, a welding machine 200, a shearing machine 300, and a controller. The controller is used to control the moving platform 100, the welding machine 200, and the shearing machine 300 to perform the above-mentioned steel truss processing method. The controller controls the moving platform 100 to carry and drive the completed steel truss 500 to move step by step, and controls the welding machine 200 to weld the contact points of the side reinforcement 520 and the main reinforcement 510 when passing through the welding machine 200, and then controls the shearing machine 300 to shear the steel truss 500 as needed when passing through the shearing machine 300, so that the steel truss 500 is processed into the required length.

[0085] Since the steel truss 500 is processed by the processing device using the above-mentioned processing method, it has the same advantages as described above, which will not be repeated here.

[0086] In some embodiments of the present application, a liquid cooling device 400 is further arranged between the shearing machine 300 and the welding machine 200, and the steel bar truss 500 is cooled via the liquid cooling device 400 during the process of running from the welding machine 200 to the shearing machine 300, which is more natural air cooling, and the cooling rate of the liquid cooling device 400 is higher, which can greatly improve the strength of the welding points.

[0087] In some embodiments of the present application, the welding machine 200 includes two, one of which is used to weld the contact points between the side reinforcement 520 and the main reinforcement 510 located at the top, i.e. the welding machine 200 is used to weld the contact points between the peaks of the side reinforcement 520 and the main reinforcement 510, and the other is used to weld the contact points between the side reinforcement 520 and the main reinforcement 510 located at the bottom, i.e. the welding machine 200 is used to weld the contact points between the valleys of the side reinforcement 520 and the main reinforcement 510.

[0088] Further, the embodiments of the present application also provide a steel bar truss processing production line, which comprises the steel bar truss production device as described above, and has the same advantages as described above because the steel bar truss production device processes the steel bar truss by using the steel bar truss processing method as described above, and details are not described here.

[0089] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for processing a steel truss, characterized in that, include: A steel truss (500) is assembled, the steel truss (500) includes three main bars (510) and two side bars (520). The three main bars (510) are arranged in parallel and form a triangular prism. The two side bars (520) are sinusoidal and are respectively arranged on two sides of the triangular prism, and are located between the two main bars (510) on the respective sides. The shear plane of the steel truss (500) is determined by the plane located at the shear position and perpendicular to the main reinforcement (510). Weld the contact points of the side reinforcement (520) and the main reinforcement (510). When the contact points are located on the shear plane, use a first current to weld for a first duration. For the other contact points, use a second current to weld for a second duration. The first current is greater than the second current and / or the first duration is greater than the second duration. The steel truss (500) is sheared along the shear plane.

2. The processing method for the steel truss according to claim 1, characterized in that, Before shearing the steel truss (500) along the shear plane, the weld joints are further cooled by liquid cooling.

3. The processing method for the steel truss according to claim 2, characterized in that, Following the assembled steel truss (500), it also includes: The steel truss (500) is placed on the mobile platform (100). The mobile platform (100) is equipped with a welding machine (200), a liquid cooling device (400) and a shearing machine (300) along its movement path. The mobile platform (100) drives the steel truss (500) to pass through the welding machine (200), the liquid cooling device and the shearing machine (300) in sequence.

4. The processing method for the steel truss according to claim 3, characterized in that, Determining the shear plane of the steel truss (500) includes: The required shearing length of the steel truss (500) is determined as the first length; The distance between the welding machine (200) and the shearing machine (300) is determined to be a second length, and the first length is greater than the second length; Calculate and determine the difference between the first length and the second length as the third length; When the shearing machine (300) shears the steel truss (500), the position of the shearing plane is determined to be a position three lengths away from the welding machine (200), and the shearing plane is located on the side of the welding machine (200) away from the shearing machine (300).

5. The processing method for the steel truss according to claim 4, characterized in that, The first length is an integer multiple of the distance between two adjacent contact points.

6. The processing method for the steel truss according to claim 4, characterized in that, The contact point between the welded side reinforcement (520) and the main reinforcement (510) includes: The stepping distance of the mobile platform (100) is determined to be the fourth length; When the shearing machine (300) shears the steel truss (500), the number of steps the steel truss (500) moves by the third length is calculated based on the third length and the fourth length; When the mobile platform (100) reaches the calculated number of steps, the welding machine (200) uses a first welding current to weld the contact point between the side rib (520) and the main rib (510) for a first duration.

7. The method for processing the steel truss according to claim 6, characterized in that, The fourth length is the distance between two adjacent contact points on the side rib (520).

8. A processing equipment for steel trusses, characterized in that, The device includes a mobile platform (100), a welding machine (200), a shearing machine (300), and a controller, wherein the controller is used to control the mobile platform (100), the welding machine (200), and the shearing machine (300) to perform the processing method of the steel truss as described in any one of claims 1 to 7.

9. The processing equipment for steel trusses according to claim 8, characterized in that, The welding machine (200) includes two, one of which is used to weld the contact point between the side rib (520) and the main rib (510) located at the top, and the other of which is used to weld the contact point between the side rib (520) and the main rib (510) located at the bottom; and / or, a liquid cooling device (400) is also provided between the shearing machine (300) and the welding machine (200).

10. A processing production line for steel trusses, characterized in that, The equipment includes the processing equipment for steel trusses as described in claim 8 or 9.

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