Punching device for rectangular steel cross beam

Abstract

The utility model discloses a punching device for a rectangular steel cross beam, which comprises a rack and a punching mechanism, and further comprises an inner supporting mechanism, the inner supporting mechanism comprises a power push rod, an expanding mechanism and two inner supporting plates, the power push rod is fixedly arranged on the rack and is connected with the expanding mechanism, and the two inner supporting plates are fixedly arranged on the rack. The opening mechanism is used for driving the two inner supporting plates to move back to back or face to face. The two punching mechanisms are symmetrically arranged, each punching mechanism comprises a hydraulic cylinder, a punch base and a punch, the hydraulic cylinders are fixedly installed on the rack, the output ends of the hydraulic cylinders are connected with the punch bases, the punches are installed on the punch bases, and openings allowing the punches to penetrate through are formed in the inner supporting plates. The upper end face and the lower end face of the rectangular steel cross beam are punched through the two punching mechanisms correspondingly, the two inner supporting plates are driven by the opening mechanisms to move, the inner walls of the upper end and the lower end of the rectangular steel cross beam are supported, stress deformation of the punched position of the rectangular steel cross beam can be avoided, and therefore the punching effect is improved, and the quality of the rectangular steel cross beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of punching equipment, in particular to a punching device for a rectangular steel beam. Background Art

[0002] Steel structure is one of the main types of building structures. It is mainly composed of components or parts such as steel beams, steel columns, and steel trusses, and the components or parts are usually connected by welding, screwing or riveting.

[0003] The cross section of a rectangular steel beam is rectangular. In steel structure construction, it is often necessary to weld or bolt the two ends of the rectangular steel beam to two steel columns. The bolt fixing method requires the use of a rectangular steel beam with mounting holes at both ends.

[0004] When punching a rectangular steel beam, the existing punching device generally punches the upper and lower end faces of the rectangular steel beam from top to bottom. Since the interior of the rectangular steel beam is a hollow structure, there is a lack of support for the interior of the rectangular steel beam during punching, which makes the rectangular steel beam easily deformed and affects the quality.

[0005] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Utility Model Content

[0006] Based on this, it is necessary to provide a punching device for a rectangular steel beam to address the above technical problems.

[0007] In order to achieve the above-mentioned purpose, the utility model provides a punching device for a rectangular steel beam, comprising a frame and a punching mechanism, and also comprising an inner support mechanism, wherein the inner support mechanism comprises a power push rod, a spreading mechanism and two inner support plates, wherein the power push rod is fixedly mounted on the frame, the power push rod is connected to the spreading mechanism and is used to drive the spreading mechanism to make horizontal linear motion so that the spreading mechanism enters or moves out of the interior of the rectangular steel beam, and the spreading mechanism is used to drive the two inner support plates to move away from or towards each other so that the inner support plates abut against or separate from the inner wall of the rectangular steel beam; the punching mechanism is symmetrically arranged in two, the punching mechanism comprises a hydraulic cylinder, a punch seat and a punch, the hydraulic cylinder is fixedly mounted on the frame, the output end of the hydraulic cylinder is connected to the punch seat, the punch seat corresponds to the inner support plates one by one, the punch is mounted on the punch seat, and an opening is opened on the inner support plate for the punch to pass through.

[0008] Preferably, the spreading mechanism includes a movable frame, a first motor, a bidirectional screw rod, a polished rod, a first nut pair, a second nut pair, a first connecting rod, a second connecting rod, a fixed block, a guide sleeve and a guide rod, the output end of the power push rod is connected to the movable frame, the first motor and the polished rod are fixedly mounted on the movable frame, the bidirectional screw rod is rotatably mounted on the movable frame and is transmission connected to the first motor, the first nut pair and the second nut pair are threadedly mounted on the bidirectional screw rod, the first nut pair and the second nut pair are both slidably mounted on the polished rod, the first connecting rod is hingedly mounted on both ends of the first nut pair, the second connecting rod is hingedly mounted on both ends of the second nut pair, the inner support plate is hinged to the first connecting rod and the second connecting rod, the fixed block is fixedly mounted on the polished rod, the guide sleeve is fixedly mounted on the fixed block, two guide rods are slidably mounted in the guide sleeve, and the two guide rods are respectively fixedly connected to the two inner support plates.

[0009] Preferably, the two punching mechanisms are symmetrically distributed up and down.

[0010] Preferably, the punch seat is provided with two rows of punches, and the inner support plate is provided with two rows of openings.

[0011] Preferably, a linear guide rail is installed on the frame, and the movable frame is installed on a slider of the linear guide rail.

[0012] Preferably, it also includes a conveying mechanism, which includes a plurality of conveying rollers rotatably mounted on a frame, and two punch seats are respectively located above and below the gap between two adjacent conveying rollers.

[0013] Preferably, a second motor is installed on the frame, a driving sprocket is installed on the output end of the second motor, and a driven sprocket is installed on each conveying roller, and the driving sprocket is connected to each driven sprocket through a transmission chain.

[0014] Preferably, a pressing plate is fixed on the punch seat located on the upper layer.

[0015] The beneficial effects of the technical solution are as follows: the upper and lower end faces of the rectangular steel beam are punched respectively by two punching mechanisms, and the two inner support plates are driven to move by the expansion mechanism to support the inner walls of the upper and lower ends of the rectangular steel beam, which can avoid stress deformation at the punching points of the rectangular steel beam, thereby improving the punching effect and improving the quality of the rectangular steel beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 This is a working state diagram of an embodiment of the utility model;

[0018] Figure 3 for Figure 2 Sectional view along line AA;

[0019] In the figure, 1, frame; 2, punching mechanism; 21, hydraulic cylinder; 22, punch seat; 23, punch; 24, pressure plate; 3, inner support mechanism; 31, power push rod; 32, opening mechanism; 320, guide rod; 321, movable frame; 322, first motor; 323, bidirectional screw rod; 324, light rod; 325, first nut pair; 326, second nut pair; 327, first connecting rod; 328, second connecting rod; 329, guide sleeve; 33, inner support plate; 34, opening; 35, linear guide rail; 4, rectangular steel beam; 5, conveying mechanism; 51, conveying roller; 52, second motor; 53, driving sprocket; 54, driven sprocket; 55, transmission chain. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0021] See also Figures 1 to 3 The embodiment of the present application provides a punching device for a rectangular steel beam, including a frame 1, a punching mechanism 2 and an inner support mechanism 3, the inner support mechanism 3 including a power push rod 31, a support mechanism 32 and two inner support plates 33, the power push rod 31 is fixedly mounted on the frame 1, the power push rod 31 is a cylinder or an electric cylinder, the power push rod 31 is connected to the support mechanism 32 to drive the support mechanism 32 to perform horizontal linear motion, so that the support mechanism 32 enters or moves out of the rectangular steel beam 4, the support mechanism 32 can be two hydraulic cylinders 21 facing in opposite directions, the support mechanism 32 It can drive the two inner support plates 33 to move away from each other or towards each other so that the inner support plates 33 abut against or separate from the inner wall of the rectangular steel beam 4; the punching mechanism 2 is symmetrically arranged in two, and the punching mechanism 2 can be horizontally symmetrically arranged, or vertically symmetrically arranged. The punching mechanism 2 includes a hydraulic cylinder 21, a punch seat 22 and a punch 23. The hydraulic cylinder 21 is fixedly installed on the frame 1, and the output end of the hydraulic cylinder 21 is connected to the punch seat 22. The punch seat 22 corresponds to the inner support plate 33 one by one. The punch 23 is installed on the punch seat 22, and the inner support plate 33 is provided with an opening 34 for the punch 23 to pass through.

[0022] In this embodiment, one end of the rectangular steel beam 4 to be punched is moved between the two punching mechanisms 2, and then the inner support mechanism 3 is driven to move by the power push rod 31, and the inner support mechanism 3 drives the two inner support plates 33 to enter the interior of the rectangular steel beam 4, and then the opening mechanism 32 is controlled to drive the two inner support plates 33 to move back to each other, so that the two inner support plates 33 are respectively abutted against the inner walls of the upper and lower ends of the rectangular steel beam 4 to support the inner walls of the upper and lower ends of the rectangular steel beam 4; then the hydraulic cylinder 21 works to drive the punch seat 22 to move toward the rectangular steel beam 4, and the punch 23 contacts the rectangular steel beam 4 to punch. After the punch 23 enters the opening 34, the punched waste enters the opening 34 Entering the interior of the rectangular steel beam 4, since the inner support plate 33 supports the inner walls of the upper and lower ends of the rectangular steel beam 4, the stress deformation at the punching point of the rectangular steel beam 4 can be avoided, thereby improving the punching effect and improving the quality of the rectangular steel beam 4; after the punching is completed, the hydraulic cylinder 21 drives the punch seat 22 and the punch 23 away from the rectangular steel beam 4, and then controls the expansion mechanism 32 to drive the two inner support plates 33 to move toward each other, so that the two inner support plates 33 are away from the inner walls of the upper and lower ends of the rectangular steel beam 4, and no longer contact the inner walls of the upper and lower ends of the rectangular steel beam 4, and then drives the inner support mechanism 3 to move through the power push rod 31, so that the inner support mechanism 3 drives the two inner support plates 33 to move out of the interior of the rectangular steel beam 4.

[0023] In a preferred embodiment, in order to facilitate driving the two inner support plates 33 to move away from or towards each other, please refer to Figures 1 to 3, a support mechanism 32 is provided, including a movable frame 321, a first motor 322, a bidirectional screw rod 323, a polished rod 324, a first nut pair 325, a second nut pair 326, a first connecting rod 327, a second connecting rod 328, a fixed block, a guide sleeve 329 and a guide rod 320, the output end of the power push rod 31 is connected to the movable frame 321, the first motor 322 is a stepping motor or a servo motor, the first motor 322 and the polished rod 324 are both fixedly mounted on the movable frame 321, the bidirectional screw rod 323 is rotatably mounted on the movable frame 321 and is transmission-connected to the first motor 322, the first nut pair 325 and the second nut pair 326 are threadedly mounted on the bidirectional screw rod 323, the bidirectional screw rod 323 has two external thread sections with opposite thread rotation directions, the first nut pair 325 and the second nut pair 326 are respectively mounted on the two external thread sections with opposite thread rotation directions, and the first nut pair 32 5 and the second nut pair 326 are both slidably mounted on the light rod 324, and the light rod 324 guides the first nut pair 325 and the second nut pair 326, so that the first nut pair 325 and the second nut pair 326 can move linearly under the drive of the bidirectional screw rod 323, the first nut pair 325 is hingedly installed with a first connecting rod 327 at both ends, and the second nut pair 326 is hingedly installed with a second connecting rod 328 at both ends, the inner support plate 33 located at the upper layer is hinged with the first connecting rod 327 and the second connecting rod 328 located at the upper layer, and the inner support plate 33 located at the lower layer is hinged with the first connecting rod 327 and the second connecting rod 328 located at the lower layer; the fixed block is fixedly installed in the middle of the light rod, and the guide sleeve 329 is fixedly installed on the fixed block. Two guide rods 320 are slidably installed in the guide sleeve 329, and the two guide rods 320 are fixedly connected to the two inner support plates 33 respectively. The guide sleeve 329 and the guide rod 320 are both vertically arranged. By setting the guide sleeve 329 and the guide rod 320, the inner support plate 33 can be guided so that when the bidirectional screw rod 323 rotates, the two inner support plates 33 always maintain a horizontal posture and move toward or away from each other, which is convenient for supporting the inner wall of the rectangular steel beam 4.

[0024] In this embodiment, when the inner support plate 33 enters the interior of the rectangular steel beam 4 to prepare to support the rectangular steel beam 4, the first motor 322 drives the bidirectional screw rod 323 to rotate forward, and under the guidance of the light rod 324, the first nut pair 325 and the second nut pair 326 move linearly toward each other, and then the first connecting rod 327 and the second connecting rod 328 drive the inner support plate 33 and the guide rod 320 to move, so that the inner support plate 33 is away from the bidirectional screw rod 323, and finally contacts with the inner wall of the rectangular steel beam 4 for support. When the punching of the rectangular steel beam 4 is completed, the first motor 322 drives the bidirectional screw rod 323 to rotate in the opposite direction. Under the guidance of the light rod 324, the first nut pair 325 and the second nut pair 326 move in opposite directions, and then drive the inner support plate 33 to move through the first connecting rod 327 and the second connecting rod 328, so that the inner support plate 33 is close to the bidirectional screw rod 323 and separated from the inner wall of the rectangular steel beam 4, which is convenient for the power push rod 31 to drive the inner support mechanism 3 and the two inner support plates 33 to move out of the rectangular steel beam 4.

[0025] In a preferred embodiment, to improve the punching stability, refer to Figures 1 to 3 , two punching mechanisms 2 are arranged symmetrically in the upper and lower parts. In order to facilitate the upper end position of the rectangular steel beam 4 to be limited when the punching mechanism 2 of the lower layer punches the rectangular steel beam 4, a pressing plate 24 is fixed on the punch seat 22 located in the upper layer. In this way, when punching the upper and lower end faces of the rectangular steel beam 4, the upper end face of the rectangular steel beam 4 is punched first, and after the punch 23 of the upper layer completes the punching, the pressing plate 24 is brought into contact with the upper end face of the rectangular steel beam 4 to limit the upper end face of the rectangular steel beam 4, and then the punching mechanism 2 of the lower layer is controlled to punch the rectangular steel beam 4, so as to ensure that the position of the rectangular steel beam 4 can remain stable when punching the rectangular steel beam 4.

[0026] In a preferred embodiment, in order to facilitate the high-strength connection of the rectangular steel beam 4 and the column by bolts, please refer to Figures 1 to 3 , two rows of punches 23 are arranged on the punch seat 22, and the number of punches 23 in each row is six, and two rows of openings 34 are opened on the inner support plate 33, and the openings 34 correspond to the punches 23 one by one. In this way, the rectangular steel beam 4 is provided with two rows of mounting holes, and can be connected to the column through two rows of bolts to improve the connection strength.

[0027] In a preferred embodiment, in order to make the power push rod 31 drive the movable frame 321 to move smoothly, please refer to Figures 1 to 3 , a linear guide 35 is installed on the frame 1, and the movable frame 321 is installed on the slider of the linear guide 35. The linear guide 35 can guide and support the movable frame 321, so that the power push rod 31 drives the movable frame 321 to move smoothly and linearly.

[0028] In a preferred embodiment, in order to facilitate the transportation of the rectangular steel beam 4 and support the rectangular steel beam 4 at the same time, please refer to Figures 1 to 3 , a conveying mechanism 5 is also provided, the conveying mechanism 5 includes a plurality of conveying rollers 51 rotatably mounted on the frame 1, and two punch seats 22 are respectively located above and below the gap between two adjacent conveying rollers 51. A second motor 52 is mounted on the frame 1, and a driving sprocket 53 is mounted on the output end of the second motor 52. A driven sprocket 54 is mounted on each conveying roller 51, and the driving sprocket 53 is connected to each driven sprocket 54 through a transmission chain 55. The second motor 52 drives the driving sprocket 53 to rotate, and the driving sprocket 53 drives each driven sprocket 54 and the conveying roller 51 to rotate through the transmission chain 55. After the rectangular steel beam 4 is placed on the conveying roller 51, the conveying roller 51 can drive the rectangular steel beam 4 to move.

[0029] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A punching device for a rectangular steel beam, comprising a frame (1) and a punching mechanism (2), characterized in that: The machine frame (1) further comprises an inner support mechanism (3), wherein the inner support mechanism (3) comprises a power push rod (31), an opening mechanism (32) and two inner support plates (33), wherein the power push rod (31) is fixedly mounted on the frame (1), and the power push rod (31) is connected to the opening mechanism (32) and is used to drive the opening mechanism (32) to perform horizontal linear motion, so that the opening mechanism (32) enters or moves out of the rectangular steel cross beam (4), and the opening mechanism (32) is used to drive the two inner support plates (33) to move away from or towards each other, so that the inner support plates (33) abuts against or separates from the inner wall of the rectangular steel beam (4); the punching mechanism (2) is symmetrically arranged in two, the punching mechanism (2) comprises a hydraulic cylinder (21), a punch seat (22) and a punch (23), the hydraulic cylinder (21) is fixedly mounted on the frame (1), the output end of the hydraulic cylinder (21) is connected to the punch seat (22), the punch seat (22) and the inner support plate (33) correspond one to one, the punch (23) is mounted on the punch seat (22), and the inner support plate (33) is provided with an opening (34) for the punch (23) to pass through.

2. The punching device for rectangular steel beam according to claim 1, characterized in that: The spreading mechanism (32) comprises a movable frame (321), a first motor (322), a bidirectional screw rod (323), a polished rod (324), a first nut pair (325), a second nut pair (326), a first connecting rod (327), a second connecting rod (328), a fixed block, a guide sleeve (329) and a guide rod (320); an output end of the power push rod (31) is connected to the movable frame (321); the first motor (322) and the polished rod (324) are both fixedly mounted on the movable frame (321); the bidirectional screw rod (323) is rotatably mounted on the movable frame (321) and is transmission-connected to the first motor (322); the first nut pair (325) and the second nut pair (326) are connected to the movable frame (321); 26) is threadedly mounted on a bidirectional screw rod (323), a first nut pair (325) and a second nut pair (326) are both slidably mounted on a light rod (324), a first connecting rod (327) is hingedly mounted on both upper and lower ends of the first nut pair (325), a second connecting rod (328) is hingedly mounted on both upper and lower ends of the second nut pair (326), an inner support plate (33) is hingedly connected to the first connecting rod (327) and the second connecting rod (328), a fixed block is fixedly mounted on the light rod, a guide sleeve (329) is fixedly mounted on the fixed block, two guide rods (320) are slidably mounted in the guide sleeve (329), and the two guide rods (320) are respectively fixedly connected to the two inner support plates (33).

3. The punching device for rectangular steel beam according to claim 2, characterized in that: The two punching mechanisms (2) are symmetrically distributed up and down.

4. The punching device for rectangular steel beam according to claim 3, characterized in that: The punch seat (22) is provided with two rows of punches (23), and the inner support plate (33) is provided with two rows of openings (34).

5. The punching device for rectangular steel beam according to claim 2, characterized in that: A linear guide rail (35) is installed on the frame (1), and the movable frame (321) is installed on a slider of the linear guide rail (35).

6. The punching device for rectangular steel beam according to claim 1, characterized in that: It also comprises a conveying mechanism (5), wherein the conveying mechanism (5) comprises a plurality of conveying rollers (51) rotatably mounted on the frame (1), and two punch seats (22) are respectively located above and below the gap between two adjacent conveying rollers (51).

7. The punching device for rectangular steel beams according to claim 6, characterized in that: A second motor (52) is mounted on the frame (1), a driving sprocket (53) is mounted on the output end of the second motor (52), each conveying roller (51) is mounted with a driven sprocket (54), and the driving sprocket (53) is connected to each driven sprocket (54) via a transmission chain (55).

8. The punching device for rectangular steel beam according to claim 3, characterized in that: A pressing plate (24) is fixed on the punch seat (22) located at the upper layer.

Images