Limiting device for U-shaped long steel beam

Abstract

The utility model relates to the field of welding tools, in particular to a limiting device for a U-shaped long steel beam, which comprises a long-strip-shaped base, a fixing assembly arranged on the base, a door-shaped frame slidably mounted on the base, two supporting plates movably mounted on the door-shaped frame, and two webs of the U-shaped steel beam respectively lean against the inner sides of the two supporting plates. Supporting seats for tightly pressing the web plates on the corresponding supporting plates are mounted at the two ends of the telescopic part respectively; the bottom plate forming the U-shaped steel beam is placed at the top of the base and pressed through the pressing blocks, the two web plates forming the U-shaped steel beam are placed at the top of the bottom plate and lean against the inner sides of the corresponding supporting plates, the supporting seats at the two ends are driven by the telescopic components to press the two web plates towards the two sides respectively, and therefore the positioning effect on the bottom plate and the web plates is achieved.

Description

Technical Field

[0001] This utility model relates to the field of welding fixtures, specifically to a limiting device for a U-shaped long steel beam. Background Technology

[0002] Steel beams have advantages over concrete beams, including higher bending resistance, earthquake resistance, and structural stability. Current U-shaped steel beams consist of two parallel and vertically arranged webs and a base plate connecting the bottom of the two webs; the webs and base plate are welded together.

[0003] However, in the current welding process of U-shaped steel beams, the placement and fixing of the web plate and the bottom plate are quite complicated, and it is not possible to accurately ensure the perpendicularity between the web plate and the bottom plate, which can easily lead to unqualified finished products after welding and waste of resources. Utility Model Content

[0004] The purpose of this invention is to provide a limiting device for U-shaped long steel beams, which facilitates fixing the U-shaped steel beams during welding, thereby solving the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A limiting device for a U-shaped long steel beam includes a long strip-shaped base. A fixing assembly for fixing the bottom plate of the U-shaped steel beam is provided on the base. Several portal frames are slidably mounted on the base along its length. Two support plates, arranged opposite each other along the width direction of the base, are movably mounted on the portal frames. The two support plates are driven by an adjusting assembly to move closer or further apart. The two webs of the U-shaped steel beam rest against the inner sides of the two support plates. A telescopic component is provided between the two webs. Support seats for pressing the webs tightly against the corresponding support plates are installed at both ends of the telescopic component.

[0007] As a further improvement, the fixing assembly includes a slide block slidably mounted on the base along the length direction of the base, a vertically extending screw rod screwed onto the slide block, and a pressure block for pressing down the base plate fixedly mounted at the lower end of the screw rod.

[0008] As a further improvement, the gantry frame includes two uprights arranged opposite each other along the width direction of the base, with a horizontal plate fixedly installed between the upper ends of the two uprights; a roller is installed at the lower end of the uprights, and a wheel groove extending along its length direction is provided in the base; a V-shaped groove is provided around the outer circumference of the roller, and a guide rail that matches the bottom of the roller is fixedly installed on the bottom wall of the wheel groove; a strip-shaped groove is provided at the top of the wheel groove that penetrates the base upwards, and the strip-shaped groove extends along the length direction of the base; the upright passes through the corresponding strip-shaped groove and can move along the strip-shaped groove.

[0009] As a further improvement, a fixing seat is fixedly installed on the column, and the fixing seat is provided with a vertically penetrating pin hole. The top of the base located below the pin hole is provided with a pin groove. Multiple pin grooves are evenly spaced along the length of the base, and a locking pin is inserted into the pin hole and one of the pin grooves.

[0010] As a further improvement, a slide rod extending along the width direction of the base is fixedly installed between the two columns, and the upper ends of the two support plates are slidably installed on the slide rod; the adjustment assembly includes a positive and negative threaded rod rotatably installed between the two columns, the positive and negative threaded rod being arranged parallel to the slide rod, the positive and negative threaded rod being provided with two external threads with opposite directions of rotation, and the upper ends of the two support plates being threadedly connected to the external threads of the positive and negative threaded rod with different directions of rotation respectively.

[0011] As a further improvement, support screws are fixedly installed on the lower outer sides of the two support plates respectively. The support screws are arranged parallel to the slide rods, and the corresponding columns are provided with through holes for the support screws to pass through. Adjusting nuts for abutting against the inner side of the corresponding columns are screwed onto the support screws.

[0012] As a further improvement, the telescopic component includes a threaded tube and a threaded rod, one end of the threaded tube and one end of the threaded rod are screwed together, and the support seats are fixedly installed at the ends of the threaded tube and the threaded rod that are far apart from each other.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This application places the bottom plate that makes up the U-shaped steel beam on the top of the base and presses it down with pressure blocks. The two web plates that make up the U-shaped steel beam are placed on the top of the bottom plate and lean against the inner side of the corresponding support plate. The telescopic components drive the support seats at both ends to press the two web plates to the sides respectively, thereby achieving the positioning function of the bottom plate and web plates and improving the welding accuracy.

[0015] This application achieves the fixation of base plates of different widths by installing the sliding block into different sliding grooves; the gantry frame can move back and forth along the length of the base so as to adjust the position of the gantry frame according to the length of the U-shaped steel beam; by rotating the positive and negative threaded rods, the two support plates are moved closer or further apart so as to adjust the distance between the two support plates according to the width of the U-shaped steel beam, which is convenient for matching U-shaped steel beams of different sizes. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the slide block according to an embodiment of the present invention;

[0019] Figure 3 This is a structural schematic diagram of the portal frame according to an embodiment of the present utility model.

[0020] In the diagram: 1-U-shaped steel beam; 2-base plate; 3-web plate; 4-base; 5-slide seat; 6-slide groove; 7-cantilever; 8-screw rod; 9-pressure block; 10-gantry frame; 11-column; 12-horizontal plate; 13-roller; 14-wheel groove; 15-guide rail; 16-strip groove; 17-support plate; 18-slide rod; 19-positive and negative threaded rod; 20-handle; 21-threaded tube; 22-threaded rod; 23-support screw; 24-adjusting nut; 25-fixed seat; 26-pin hole; 27-pin groove; 28-locking pin; 29-support seat. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 3As shown, a limiting device for a U-shaped long steel beam includes a long strip-shaped base 4, on which a fixing assembly is provided for fixing the base plate 2 of the U-shaped steel beam 1. The fixing assembly includes a slide block 5 that is slidably mounted on the base 4 along its length. The top of the base 4 is provided with a groove 6 extending along its length, and multiple grooves 6 are evenly spaced along the width of the base 4. By installing the slide block 5 into different grooves 6, base plates 2 of different widths can be fixed. The cross-section of the groove 6 is inverted T-shaped, and the lower end of the slide block 5 matches the shape of the groove 6 to prevent the slide block 5 from falling out of the groove 6. The upper end of the slide block 5 extends out of the outside of the groove 6 and is integrally formed with a cantilever 7. The cantilever 7 extends horizontally along the length of the base 4, and a vertically extending screw rod 8 is screwed onto the cantilever 7. A pressure block 9 for pressing down the base plate 2 is fixedly installed at the lower end of the screw rod 8.

[0023] Place the base plate 2, which makes up the U-shaped steel beam 1, on top of the base 4. According to the width of the base plate 2, install a slide block 5 in the two slide grooves 6 at the front end and the two slide grooves 6 at the rear end of the base plate 2. The distance between the two slide grooves 6 should be less than the width of the base plate 2. When installing the slide block 5, the cantilever 7 should face the side of the base plate 2. Slide the slide block 5 along the slide groove 6 so that the slide block 5 abuts against the end of the base plate 2. Then, drive the pressure block 9 to press down on the base plate 2 by rotating the screw rod 8, thereby fixing the base plate 2 and preventing the base plate 2 from shifting during the welding process.

[0024] Several portal frames 10 are slidably mounted on the base 4 along its length. In this embodiment, two sets of portal frames 10 are provided, which are used to fix the front and rear ends of the web plate 3 respectively. The portal frame 10 specifically includes two columns 11 arranged opposite each other on the left and right sides along the width direction of the base. A horizontal plate 12 is fixedly installed between the upper ends of the two columns 11 by bolts. An inverted U-shaped wheel frame is fixedly installed at the lower end of the columns 11 by bolts. A roller 13 is rotatably installed in the wheel frame. In this embodiment, two rollers 13 are arranged side by side, and the axis of the rollers 13 extends laterally along the width direction of the base 4, which can reduce the resistance when the portal frame 10 moves back and forth. Wheel grooves 14 extending back and forth along the length direction are respectively provided on the left and right sides of the base 4, and the wheel frames and rollers 13 on both sides are respectively placed in the corresponding wheel grooves. Inside the gantry 14, a V-shaped groove is provided around the outer circumference of the roller 13. A guide rail 15, matching the bottom of the roller 13, is fixedly installed on the bottom wall of the groove 14 by bolts. The top of the guide rail 15 is inverted V-shaped, matching the bottom of the roller 13, which can improve the stability of the roller 13 rolling in the groove 14. The top of the groove 14 is provided with a strip-shaped groove 16 that penetrates the base 4 upwards. The strip-shaped groove 16 extends back and forth along the length of the base 4. The column 11 passes through the corresponding strip-shaped groove 16 and can move back and forth along the strip-shaped groove 16. When the gantry frame 10 moves back and forth, the strip-shaped groove 16 can provide guidance for the column 11. With this setting, the gantry frame 10 can move back and forth along the length of the base 4, so that the position of the gantry frame 10 can be adjusted according to the length of the U-shaped steel beam 1, and the gantry frame 10 can provide stable support for the web 3 that makes up the U-shaped steel beam 1.

[0025] Two support plates 17 are movably mounted on the portal frame 10, arranged laterally to each other along the width direction of the base 4. A sliding rod 18 extending laterally along the width direction of the base 4 is bolted between the upper ends of the two columns 11. Two sliding rods 18 are arranged side-by-side, and the upper ends of the two support plates 17 are simultaneously slidably mounted on the two sliding rods 18. The two support plates 17 are driven to move closer or further apart by an adjusting assembly, which includes a positive and negative threaded rod 19 rotatably mounted between the upper ends of the two columns 11 via bearings. The positive and negative threaded rod 19 is parallel to the sliding rod 18, and the two sliding rods 18 are located in front of and behind the positive and negative threaded rod 19, respectively. On both sides, the bottom of the horizontal plate 12 is provided with a concave groove extending laterally. The slide rod 18 and the positive and negative threaded rods 19 are both contained in the concave groove at the bottom of the horizontal plate 12. The positive and negative threaded rods 19 are provided with two external threads with opposite directions of rotation. The upper ends of the two support plates 17 are respectively threaded to the external threads of the positive and negative threaded rods 19 with different directions of rotation. The optical shaft at one end of the positive and negative threaded rods 19 passes through the outside of the column 11 and is fixedly installed with a crank 20. By cranking the crank 20, the positive and negative threaded rods 19 are driven to rotate, thereby driving the two support plates 17 to move closer or further away from each other, so as to adjust the distance between the two support plates 17 according to the width of the U-shaped steel beam 1.

[0026] The two webs 3 of the U-shaped steel beam 1 rest against the inner sides of the two support plates 17 respectively. A telescopic component is provided between the two webs 3. The telescopic component is specifically located between the left and right support plates 17. Support seats 29 for pressing the webs 3 tightly onto the corresponding support plates 17 are installed at both ends of the telescopic component. The telescopic component can be a hydraulic telescopic rod. The two support seats 29 are fixedly installed at both ends of the hydraulic telescopic rod. The two webs 3 are placed on top of the base plate 2 and rest against the inner sides of the corresponding support plates 17. After placement, the hydraulic telescopic rod is placed horizontally between the two webs 3 at the support plate 17. The extension of the hydraulic telescopic rod drives the support seats 29 at both ends to press the two webs 3 to both sides, thereby clamping the corresponding webs 3 through the support plates 17 and support seats 29, realizing the fixing effect of the webs 3, thus facilitating the welding between the webs 3 and the base plate 2.

[0027] Alternatively, the telescopic component includes a threaded tube 21 and a threaded rod 22. One end of the threaded tube 21 and one end of the threaded rod 22 are screwed together. Support seats 29 are fixedly installed at the ends of the threaded tube 21 and the threaded rod 22 that are far apart from each other. After the web plate 3 and the bottom plate 2 are placed, the threaded tube 21 and the threaded rod 22 are placed laterally between the two web plates 3 at the support plate 17. By rotating the threaded rod 22, the two support seats 29 are moved away from each other, so that the support seats 29 at both ends press the two web plates 3 to both sides respectively.

[0028] Support screws 23 are bolted to the lower outer sides of the two support plates 17. The support screws 23 are parallel to the slide rods 18. The corresponding columns 11 have through holes for the support screws 23 to pass through. Adjusting nuts 24 are screwed onto the support screws 23 to abut against the inner side of the corresponding columns 11. When the position of the support plate 17 changes, the adjusting nut 24 is rotated to abut against the inner side of the corresponding column 11, thereby providing support for the lower end of the support plate 17 and preventing the support plate 17 from bending and deforming outward under pressure.

[0029] Two columns 11 are respectively fixed to mounting bases 25 on opposite sides by bolts. Each mounting base 25 has a vertically penetrating pin hole 26. The top of the base 4 below the pin hole 26 has a pin groove 27, with multiple pin grooves 27 evenly spaced along the length of the base 4. A locking pin 28 is inserted into the pin hole 26 and one of the pin grooves 27. After the position of the portal frame 10 is adjusted, the locking pin 28 is inserted into the pin hole 26 and the pin groove 27 below it, thereby fixing the position of the portal frame 10.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A limiting device for a U-shaped long steel beam, characterized in that: The device includes a long, narrow base with a fixing assembly for securing the bottom plate of a U-shaped steel beam. Several portal frames are slidably mounted on the base along its length. Two support plates, arranged opposite each other along the width of the base, are movably mounted on the portal frames. The two support plates are driven by an adjustment assembly to move closer or further apart from each other. The two webs of the U-shaped steel beam rest against the inner sides of the two support plates. A telescopic component is provided between the two webs, and support seats are installed at both ends of the telescopic component to press the webs tightly against the corresponding support plates.

2. The limiting device for a U-shaped long steel beam as described in claim 1, characterized in that: The fixing assembly includes a slide block that is slidably mounted on the base along the length of the base, a vertically extending screw rod that is screwed onto the slide block, and a pressure block for pressing down the base plate that is fixedly mounted at the lower end of the screw rod.

3. The limiting device for a U-shaped long steel beam as described in claim 1, characterized in that: The portal frame includes two uprights arranged opposite each other along the width direction of the base, with a horizontal plate fixedly installed between the upper ends of the two uprights; rollers are installed at the lower ends of the uprights, and the base has a wheel groove extending along its length direction. A V-shaped groove is arranged around the outer circumference of the roller, and a guide rail that matches the bottom of the roller is fixedly installed on the bottom wall of the wheel groove; a strip-shaped groove is provided at the top of the wheel groove, extending upward through the base, and the strip-shaped groove extends along the length direction of the base. The uprights pass through the corresponding strip-shaped groove and can move along the strip-shaped groove.

4. A limiting device for a U-shaped long steel beam as described in claim 3, characterized in that: A fixing base is fixedly installed on the column. The fixing base has a vertically penetrating pin hole. The top of the base located below the pin hole has a pin groove. Multiple pin grooves are evenly spaced along the length of the base. A locking pin is inserted into the pin hole and one of the pin grooves.

5. A limiting device for a U-shaped long steel beam as described in claim 3, characterized in that: A slide rod extending along the width direction of the base is fixedly installed between the two columns, and the upper ends of the two support plates are slidably installed on the slide rod; the adjustment assembly includes a positive and negative threaded rod rotatably installed between the two columns, the positive and negative threaded rod is arranged parallel to the slide rod, the positive and negative threaded rod is provided with two external threads with opposite directions of rotation, and the upper ends of the two support plates are respectively threaded to the external threads with different directions of rotation of the positive and negative threaded rod.

6. A limiting device for a U-shaped long steel beam as described in claim 5, characterized in that: Support screws are fixedly installed on the lower outer sides of the two support plates respectively. The support screws are arranged parallel to the slide rods. The corresponding columns are provided with through holes for the support screws to pass through. Adjusting nuts for abutting against the inner side of the corresponding columns are screwed onto the support screws.

7. A limiting device for a U-shaped long steel beam as described in claim 1, characterized in that: The telescopic component includes a threaded tube and a threaded rod. One end of the threaded tube and one end of the threaded rod are screwed together, and the support seats are fixedly installed at the ends of the threaded tube and the threaded rod that are far apart from each other.

Images