Automatic welding device for building pile foundation prefabricated reinforcement cage

Abstract

The application discloses a building pile foundation prefabricated reinforcement cage automatic welding device and relates to the technical field of building construction equipment. The main frame body is provided with a feeding mechanism at the upper end, and a stirrup distribution mechanism is fixedly arranged on one side of the main frame body and used for conveying the stirrup to the feeding mechanism to a preset position. Visual detection mechanisms are fixedly arranged on the front and back sides of the main frame body on the left side of the feeding mechanism. A distribution mechanism is arranged inside the feeding mechanism. An auxiliary positioning mechanism is movably arranged on the main frame body.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment technology, specifically to an automated welding device for precast steel cages for building pile foundations. Background Technology

[0002] Pile foundations are the foundation of building engineering. To improve their structural performance, bearing capacity, and applicability, it is necessary to insert the core component of the building—the steel reinforcement cage—during construction to increase the tensile strength of the concrete. Existing Chinese patent "CN213379927 U A Semi-automatic Welding and Forming Device for Cast-in-Place Concrete Steel Reinforcement Cage of Cylindrical Pier" first calculates the spacing and quantity of stirrups, then manually installs the baffle, and then releases the stirrups sequentially for welding. This process involves positioning, welding, and repeating the above steps continuously. There is a significant time lag between welding each pair of stirrups, and the welding strength between the stirrups and longitudinal reinforcement cannot be controlled, resulting in low production efficiency, unstable welding quality, and high labor intensity.

[0003] Therefore, it is necessary to provide an automated welding device for precast steel cages for building pile foundations to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automated welding device for precast steel cages of building pile foundations, comprising:

[0005] The main frame has a feeding mechanism installed at its upper end, and a stirrup feeding mechanism is fixedly installed on one side of the main frame, which is used to feed the stirrups into the feeding mechanism to a preset position. Visual inspection mechanisms are fixedly installed on both the front and rear sides of the main frame located on the left side of the feeding mechanism.

[0006] A dispensing mechanism, which is disposed inside the feeding mechanism; and

[0007] An auxiliary positioning mechanism is mounted on the main frame in a positionable and movable manner.

[0008] Furthermore, as a preferred embodiment, the auxiliary positioning mechanism includes at least two sets of symmetrically arranged and horizontally self-driving welding robots on both sides. The welding robots have multiple degrees of freedom and are used for welding and forming longitudinal bars and stirrups.

[0009] Furthermore, as a preferred embodiment, both the feeding mechanism and the stirrup feeding mechanism are configured as inclined plane structures with an inclination angle of α.

[0010] Furthermore, preferably, the dispensing mechanism comprises two sets arranged symmetrically vertically, both sets having identical structures and being laterally adjustable, including:

[0011] The main support is rotatably disposed within the feeding mechanism and is driven to rotate by a corresponding self-locking drive mechanism, and a first guide groove is provided on the main support.

[0012] The movable rod has one side rotatably mounted in the feeding mechanism, and the other side is hinged to a positioning bracket, and the positioning bracket is provided with a second guide groove.

[0013] The inner card plate has its upper and lower sides rotatably disposed within the card block, and the card block is movably disposed within the first guide groove and the second guide groove. The lower end of the inner card plate is fixedly installed with an outer card plate.

[0014] Furthermore, as a preferred embodiment, a guide cylinder is fixedly installed inside the feeding mechanism, and the inner clamping plate on the side near the driving mechanism is hinged to the output end of the guide cylinder.

[0015] Furthermore, as a preferred embodiment, the locking blocks laterally distributed within the main bracket and the positioning bracket are all connected by a return spring.

[0016] Furthermore, as a preferred embodiment, the outer clamping plate is a sheet-like structure with a sharp lower end, which is used for the distribution of stirrups, and the length of the outer clamping plate increases from left to right with a certain height difference.

[0017] Furthermore, as a preferred embodiment, the auxiliary positioning mechanism includes multiple circumferentially distributed snap-fit ​​sleeves.

[0018] Compared with the prior art, the present invention provides an automated welding device for precast steel cages for building pile foundations, which has the following advantages:

[0019] In this invention, the device combines the inclined feeding mechanism for conveying longitudinal reinforcement with the stirrup feeding mechanism for conveying stirrups. The stirrups are supplied as a whole and positioned on the longitudinal reinforcement as they slide down. The positioning mechanism first supports the stirrups, and then automatically separates and positions them through the reciprocating motion of the outer clamping plate in the up-down and left-right directions. This is then used in conjunction with the welding robot to perform welding operations. This improves the controllability of the one-to-one supply of stirrups. Furthermore, by combining the contraction of the guide cylinder with the feeding mechanism to control the conveying of longitudinal reinforcement, the welding strength of the stirrups and longitudinal reinforcement can be detected. This facilitates effective control over the welding qualification of the stirrups and longitudinal reinforcement, thereby ensuring improved welding efficiency. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of an automated welding device for precast steel cages used in building pile foundations;

[0021] Figure 2 A schematic diagram of the dispensing mechanism in an automated welding device for precast steel cages used in building pile foundations;

[0022] Figure 3 for Figure 2 Enlarged cross-sectional view of point A in the middle;

[0023] Figure 4 A schematic diagram of the longitudinal reinforcement conveying structure in an automated welding device for precast steel cages in building pile foundations;

[0024] Figure 5 for Figure 4 Schematic diagram of the distribution of stirrups at the top of the longitudinal reinforcement;

[0025] Figure 6 A schematic diagram of the separation of stirrups for the distribution mechanism;

[0026] Figure 7 This is a schematic diagram showing the relative movement trend of the longitudinal bars and stirrups after welding.

[0027] In the diagram: 1. Main frame; 2. Feeding mechanism; 3. Distributor mechanism; 4. Auxiliary positioning mechanism; 11. Stirrup distribution mechanism; 31. Main support; 32. Movable rod; 33. Positioning support; 34. Inner clamping plate; 35. Outer clamping plate; 36. Guide cylinder; 41. Snap-fitting sleeve rod; 341. Return spring. Detailed Implementation

[0028] Please see Figures 1-7 In this embodiment of the invention, an automated welding device for precast steel cages for building pile foundations includes:

[0029] The main frame 1 has a feeding mechanism 2 installed at its upper end, and a stirrup feeding mechanism 11 is fixedly installed on one side of the main frame 1. It is used to feed the stirrups into the feeding mechanism 2 to a preset position. Visual inspection mechanisms are fixedly installed on both the front and rear sides of the main frame 1 located on the left side of the feeding mechanism 2.

[0030] The dispensing mechanism 3 is disposed inside the feeding mechanism 2; and

[0031] Auxiliary positioning mechanism 4 is movable and positionable and mounted on the main frame 1;

[0032] It should be noted that the feeding mechanism 2, the stirrup feeding mechanism 11, the distribution mechanism 3, and the auxiliary positioning mechanism 4 are all controlled by the control center, which can be adaptively adjusted according to the spacing and quantity of the longitudinal bars and stirrups.

[0033] That is, during the operation of the device, the spacing and quantity of the stirrups are first input to the control center, and then the longitudinal bars are conveyed at an incline through the feeding mechanism 2. The stirrup distribution mechanism 11 supplies the welded stirrups along the longitudinal bars as a whole. The control center controls the distribution mechanism 3 to provide overall support for the stirrups and distribute the bars. Under the action of the distribution mechanism 3, the stirrups slide along the longitudinal bars and are positioned.

[0034] In a preferred embodiment, the auxiliary positioning mechanism 4 includes at least two sets of symmetrically arranged and horizontally self-driving welding robots on both sides. The welding robots have multiple degrees of freedom and are used for welding and forming longitudinal bars and stirrups. There are multiple weld points between the longitudinal bars and stirrups. The welding robots can perform single-point welding of multiple weld points to achieve overall coverage.

[0035] Please see Figure 1 In a preferred embodiment, both the feeding mechanism 2 and the stirrup feeding mechanism 11 are configured as inclined plane structures with an inclination angle of α, which facilitates the stirrups sliding up and down along the inclined longitudinal bars.

[0036] Please see Figure 2 In this embodiment, the dispensing mechanism 3 consists of two sets arranged symmetrically vertically. Both sets of dispensing mechanisms 3 have identical structures and are horizontally adjustable. They include:

[0037] The main support 31 is rotatably disposed within the feeding mechanism 2 and is driven to rotate by a corresponding self-locking drive mechanism. A first guide groove is provided on the main support 31.

[0038] The movable rod 32 has one side rotatably mounted in the feeding mechanism 2, and the other side is hinged to a positioning bracket 33, and the positioning bracket 33 is provided with a second guide groove.

[0039] The inner card plate 34 is rotatably disposed in the card block on both its upper and lower sides. The card block is movably disposed in the first guide groove and the second guide groove. The lower end of the inner card plate 34 is fixedly installed with an outer card plate 35.

[0040] It should be noted that a positioning mechanism that can control the extension and retraction of the main frame 1 located at the leftmost outer card plate 35 is installed on the main frame 1, which is used to support the overall sliding of the stirrups.

[0041] In other words, during the rotation of the drive mechanism, the main support 31 gradually makes a circular motion, and the corresponding movable rod 32 drives the positioning support 33 to deflect. The inner clamping plate 34 and the outer clamping plate 35 always remain perpendicular. The upper and lower distributing mechanisms 3 need to adjust their lateral displacement and fix them according to the deflection angle of the longitudinal reinforcement to ensure that each stirrup is perpendicular to each longitudinal reinforcement. The control center needs to control the deflection of the main support 31 according to the manually input stirrup spacing to distribute the stirrups.

[0042] Please see Figure 2 In a preferred embodiment, a guide cylinder 36 is fixedly provided inside the feeding mechanism 2, and the inner clamping plate 34 near the drive mechanism is hinged to the output end of the guide cylinder 36. The guide cylinder 36 is used to drive the inner clamping plate 34 to slide on the main support 31 and the positioning support 33.

[0043] Please see Figure 3 In this embodiment, the blocks laterally distributed within the main support 31 and the positioning support 33 are connected by a return spring 341. It should be explained that the elastic force of the return spring 341 should be greater than the weight of the stirrup. The control center adjusts the extension of the guide cylinder 36 according to the input stirrup width, thereby controlling the spacing between the two outer plates 35. This allows the upper and lower sets of outer plates 35 to be inserted between the two stirrups when they deflect in opposite directions. After the guide cylinder 36 retracts, the return spring 341 separates the stirrups during the deformation recovery process.

[0044] In a preferred embodiment, the outer clamping plate 35 is a sheet-like structure with a sharp lower end, which is used for the separation of the stirrups and facilitates the guidance between the two outer clamping plates 35. The length of the outer clamping plate 35 increases from left to right with a certain height difference.

[0045] In other words, when the outer clamping plates 35 deflect in opposite directions, both outer clamping plates 35 need to penetrate deep into the stirrups and separate the stirrups. The separated stirrups are positioned at each outer clamping plate 35, and then the welding robot's welding head welds the stirrups and longitudinal bars from top to bottom. Figure 6 As shown, the height difference h between the two outer plates must at least satisfy the following:

[0046]

[0047] T – Diameter of the stirrup;

[0048] ɑ—the inclination angle of the longitudinal reinforcement;

[0049] h — the height difference between the two outer card plates at 35 degrees;

[0050] That is, according to the preset stirrup width, the control center controls the guide cylinder 36 to extend and adaptively adjusts the spacing between the two outer clamping plates 35. After the height difference h between the two outer clamping plates 35 is fixed, the control center controls the upper and lower main supports 31 to deflect towards each other, so that the outer clamping plates 35 penetrate into the stirrups. The control center controls the guide cylinder 36 to retract according to the input stirrup spacing parameter, and the spacing between the two outer clamping plates 35 increases to the stirrup spacing, thereby performing the stirrup separation work. Then, in conjunction with the movement of the welding robot, multiple welding points are welded.

[0051] After the welding work is completed, the control center continues to control the retraction of the guide cylinder 36, and the two outer clamping plates 35 continue to separate under the force of the return spring 341, that is, the distance between the two outer clamping plates 35 is greater than the distance between the two stirrups. The feed mechanism 2 then controls the continued small-amplitude feeding of the longitudinal ribs, such as... Figure 7As shown, when the visual inspection mechanism detects no abnormalities, the two main supports 31 deflect in opposite directions, the feeding mechanism 2 continues to feed the longitudinal reinforcement, the auxiliary positioning mechanism 4 controls the downward distance of the longitudinal reinforcement, and repeats the reinforcement separation step, which can detect and provide feedback on the welding strength of the longitudinal reinforcement and the stirrups; when the visual inspection mechanism detects obvious separation of the stirrups from the longitudinal reinforcement, the feeding mechanism 2 controls the reverse upward movement and corresponding small-amplitude feeding, the guide cylinder 36 controls the shrinking outer clamping plate 35 to shrink to the spacing of the stirrups, and re-welds. After the welding is completed, the above steps are repeated.

[0052] Please see Figure 5 In a preferred embodiment, the auxiliary positioning mechanism 4 includes multiple circumferentially distributed snap-fit ​​sleeves 41. The control center controls the extension and retraction of the snap-fit ​​sleeves 41 in an orderly manner according to the input stirrup spacing, so that the stirrups are fixed on the longitudinal bars and cooperate with the distribution mechanism 3 and the welding robot to perform welding.

[0053] In practice, during the operation of the device, the spacing and quantity of the stirrups are first input to the control center. Then, the longitudinal bars are conveyed at an incline through the feeding mechanism 2. The stirrup distribution mechanism 11 supplies the welded stirrups along the longitudinal bars as a whole. The guide cylinder 36 is extended, and the positioning mechanism supports the stirrups. The drive mechanism is started, the main support 31 deflects in opposite directions, the outer clamping plate 35 moves downward and penetrates between the two stirrups, the guide cylinder 36 retracts, and the two stirrups are separated. The welding robot performs welding operations on them. The vision inspection mechanism, together with the sorting mechanism 3, inspects the welding points of multiple stirrups. After the inspection is qualified, the drive mechanism rotates in the opposite direction, the main support 31 deflects in the opposite direction, causing the outer clamping plate 35 to detach from the longitudinal bars. The feeding mechanism 2 continues to convey the longitudinal bars, and the stirrups and longitudinal bars slide down to the auxiliary positioning mechanism 4 for positioning. Then, the sorting and welding operation of the stirrups is repeated.

[0054] The above description is merely 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. An automated welding device for precast steel cages used in building pile foundations, characterized in that: It includes: The main frame (1) is equipped with a feeding mechanism (2) at its upper end, and a stirrup feeding mechanism (11) is fixedly installed on one side of the main frame (1), which is used to feed the stirrups into the feeding mechanism (2) to a preset position. Visual inspection mechanisms are fixedly installed on both the front and rear sides of the main frame (1) located on the left side of the feeding mechanism (2). The dispensing mechanism (3) is located inside the feeding mechanism (2); An auxiliary positioning mechanism (4) is installed on the main frame (1) in a positionable and movable manner. The auxiliary positioning mechanism (4) includes a plurality of circumferentially distributed snap-fit ​​sleeve rods (41). The distributing mechanism (3) consists of two sets arranged symmetrically vertically. Both sets of the distributing mechanism (3) have the same structure and are horizontally adjustable, including: The main support (31) is rotatably disposed in the feeding mechanism (2) and is driven to rotate by a corresponding self-locking drive mechanism, and the main support (31) is provided with a first guide groove. The movable rod (32) is rotatably disposed in the feeding mechanism (2) on one side and a positioning bracket (33) is hinged on the other side, and a second guide groove is provided on the positioning bracket (33); The inner card plate (34) is rotatably disposed in the card block on both its upper and lower sides. The card block is movably disposed in the first guide groove and the second guide groove. The lower end of the inner card plate (34) is fixedly installed with an outer card plate (35).

2. The automated welding device for precast steel cages for building pile foundations according to claim 1, characterized in that: Both the feeding mechanism (2) and the stirrup feeding mechanism (11) are configured as inclined plane structures.

3. The automated welding device for precast steel cages for building pile foundations according to claim 1, characterized in that: The feed mechanism (2) is fixedly provided with a guide cylinder (36), and the inner clamping plate (34) on the side near the drive mechanism is hinged to the output end of the guide cylinder (36).

4. The automated welding device for precast steel cages for building pile foundations according to claim 1, characterized in that: The locking blocks that are laterally distributed in the main bracket (31) and the positioning bracket (33) are all connected by a return spring (341).

5. The automated welding device for precast steel cages for building pile foundations according to claim 1, characterized in that: The outer clamping plate (35) is a sheet-like structure with a sharp lower end, which is used for the distribution of stirrups, and the length of the outer clamping plate (35) increases from left to right.

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