Feeding device for welding truss

Abstract

The feeding device used for welding the truss comprises a stock bin used for containing truss raw materials, a jig frame used for providing a site for welding the truss is arranged on one side of the stock bin, and the feeding device further comprises a grabbing lifting appliance used for transferring the truss raw materials on the stock bin to the position above the jig frame. The grabbing lifting appliance comprises a frame, lifting ropes are connected to the four corners of the frame, transverse rods which are arranged along the frame in a sliding mode are arranged at the two ends of the frame in the length direction, and the transverse rods are provided with two first air cylinders which are arranged in a spaced mode and matched with chord members of a truss in position. A first air cylinder shaft of the first air cylinder is connected with a first grabbing mechanism used for grabbing a chord member, a plurality of second air cylinders matched with web members of a truss in position are arranged in the middle of the frame, and a second air cylinder shaft of each second air cylinder is connected with a second grabbing mechanism used for grabbing the web members.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction equipment, in particular to a feeding device for welding trusses. Background Art

[0002] Trusses have the advantages of bearing tension or pressure, giving full play to the role of materials, saving materials, and reducing structural weight. Therefore, trusses are often used in bridge construction. At present, in the production and manufacturing process of trusses, individual parts need to be hoisted separately for loading and welding. The truss production of the prior art has the following problems: the placement of the trusses is not standardized; and the hoisting is manual operation, the work intensity of personnel is high and high-frequency hoisting operations are required, which has high safety risks. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve the deficiencies in the prior art and provide a feeding device for welding trusses which can standardize the placement of trusses, reduce the frequency of hoisting and replace manual labor.

[0004] The technical solution adopted by the utility model is to include a silo for placing truss raw materials, one side of the silo is provided with a tire frame providing a space for welding trusses, and also includes a grabbing sling for transferring the truss raw materials on the silo to the top of the tire frame; the grabbing sling includes a frame, four corners of the frame are connected with lifting ropes, both ends of the frame in the length direction are provided with cross bars slidably arranged along the frame, the cross bar is provided with two first cylinders arranged at intervals and adapted to the position of the chord of the truss, the first cylinder shaft of the first cylinder is connected to a first grabbing mechanism for grabbing the chord, a plurality of second cylinders adapted to the position of the web of the truss are provided in the middle of the frame, the second cylinder shaft of the second cylinder is connected to a second grabbing mechanism for grabbing the web.

[0005] The silo of the utility model comprises two chord storage racks arranged in parallel for placing the chords of the truss, a web storage rack for placing the webs of the truss is arranged between the two chord storage racks, the chord storage rack comprises a first support frame located on the ground, a first column adapted to the shape of the chord is arranged above the first support frame, and the first column is respectively located on both sides of the chord; the web storage rack comprises a second support frame located on the ground, a second column adapted to the shape of the web is arranged above the second support frame, and the second column is respectively located on both sides of the chord.

[0006] In the utility model, a first oblique rod is arranged between the first column and the first supporting frame, and a second oblique rod is arranged between the second column and the second supporting frame.

[0007] The first gripping mechanism of the utility model includes a third cylinder seat, the third cylinder seat is provided with a third cylinder, the upper end of the third cylinder shaft of the third cylinder is connected to a connecting head, the connecting head is in a "T" shape, the left and right ends of the connecting head are respectively rotatably connected to the first connecting rod, the other end of the first connecting rod is rotatably connected to the second connecting rod, the lower part of the second connecting rod is rotatably connected to the third connecting rod, the lower part of the third connecting rod is fixedly connected to a clamping plate, the middle part of the third connecting rod is rotatably connected to the third cylinder seat through a pin shaft, and the clamping plate is provided with an adjustable bolt.

[0008] The utility model provides guide rails at both ends of the frame in the width direction, and the crossbar is provided with a sliding block matched with the guide rail, and the guide rail and the sliding block are slidably arranged; and also includes a fourth cylinder for driving the sliding block to slide.

[0009] The first cylinder of the utility model is provided with a guide unit for preventing the cylinder piston shaft from rotating, and the guide unit includes a base plate, two guide rods arranged at intervals are provided above the base plate, the first cylinder is provided between the two guide rods, the middle parts of the two guide rods are connected by the same flange, the base plate is located below the cross bar, and the flange is located above the cross bar.

[0010] The utility model provides a limit device below the cross bar, the limit device is in a "U" shape, and the cross bar is located between the limit devices.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a silo on which truss raw materials are stored. Compared with the disordered placement of truss raw materials in the prior art, the truss raw materials are placed in a standardized manner to reduce the floor space occupied. A grabbing sling is provided to transfer the truss raw materials on the silo to a tire frame. Compared with the manual loading in the prior art, the manual loading is replaced by the manual loading to achieve a high degree of mechanization. A tire frame is provided and welding is performed on the tire frame, thereby realizing the loading, transfer and welding of the truss. At the same time, the grabbing sling has a first grabbing mechanism for grabbing the chord of the truss and a second grabbing mechanism for grabbing the web of the truss. Compared with the prior art that loading is performed in multiple times, the chord of the truss and the web of the truss can be grabbed simultaneously, which can reduce the frequency of lifting and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the mechanism of the first grasping mechanism, the first cylinder and the guide unit combined in the utility model. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings and by way of embodiments.

[0016] like Figures 1 to 2 As shown, the embodiment described in this embodiment includes a silo 1 for placing truss raw materials, one side of the silo 1 is provided with a tire frame 2 that provides a place for welding trusses, and also includes a grabbing sling 3 for transferring the truss raw materials on the silo 1 to the top of the tire frame 2; the grabbing sling 3 includes a frame 31, the four corners of the frame 31 are connected to the sling rope 310, the two ends of the frame 31 in the length direction are provided with a cross bar 32 that is slidably arranged along the frame 31, the cross bar 32 is provided with two first cylinders 33 that are arranged at intervals and are adapted to the position of the chord of the truss, the first cylinder shaft of the first cylinder 31 is connected to a first grabbing mechanism 34 for grabbing the chord, and the middle part of the frame 31 is provided with a plurality of second cylinders that are adapted to the position of the web of the truss 35, the second cylinder shaft of the second cylinder 35 is connected to a second grabbing mechanism 36 for grabbing the web; in this embodiment, a silo 1 is provided on which truss raw materials are stored, so that the placement of the truss raw materials is standardized, and a grabbing sling 3 is provided, which transfers the truss raw materials on the silo to the tire frame 2, so as to replace manual transfer and loading and achieve a high degree of mechanization, and a tire frame 2 is provided and welding is performed on the tire frame 2, so as to realize the loading, transfer and welding of the truss; at the same time, the grabbing sling 3 has a first grabbing mechanism 35 for grabbing the chord of the truss and a second grabbing mechanism 36 for grabbing the web of the truss, so that the chord of the truss and the web of the truss can be grabbed at the same time, which can reduce the frequency of lifting and improve work efficiency.

[0017] The specific structure of the silo described in this embodiment is as follows: the silo 1 includes two parallel chord storage racks 11 for placing the chords of the truss, a web storage rack 12 for placing the webs of the truss is provided between the two chord storage racks 11, the chord storage rack 11 includes a first support frame 111 located on the ground, a first column 112 adapted to the shape of the chord is provided above the first support frame 111, and the first columns 112 are respectively located on both sides of the chord; a first oblique rod 113 is provided between the first column 112 and the first support frame 111, and the web storage rack 12 includes a second support frame 121 located on the ground, a second support frame 121 is provided above the second support frame 121, and a second support frame 121 is provided with a second support frame 112 adapted to the shape of the web. The first column 122 and the second column 122 are respectively located on both sides of the chord, and a second diagonal rod 123 is provided between the second column 122 and the second support frame 121; in this embodiment, the silo 1 includes a chord storage rack 11 to store the chord of the truss, and the chord storage rack 11 includes a first column 112 that is adapted to the shape and position of the chord, so as to achieve accurate storage of the chord of the truss; it is better to include a web storage rack 12 to store the web of the truss, and the web storage rack 12 includes a second column 122 that is adapted to the shape and position of the web, so as to achieve accurate storage of the web of the truss; the function of the first diagonal rod 113 is to reinforce the first column 112, and the function of the second diagonal rod 123 is to reinforce the second column 122.

[0018] In this embodiment, the structures of the first grabbing mechanism 34 and the second grabbing mechanism 36 are completely the same. The specific structure of the first grabbing mechanism 34 is as follows: the first grabbing mechanism 34 includes a third cylinder seat 341, and the third cylinder seat 341 is provided with a third cylinder 342. The upper end of the third cylinder shaft of the third cylinder 342 is connected to a connecting head 343, and the connecting head 343 is in a "T" shape. The left and right ends of the connecting head 343 are respectively rotatably connected to the first connecting rod 344, and the other end of the first connecting rod 344 is rotatably connected to the second connecting rod 345. The lower end of the second connecting rod 345 is rotatably connected to the third connecting rod. Rod 346, a clamping plate 347 is fixedly connected to the lower part of the third connecting rod 346, the middle part of the third connecting rod 346 is rotatably connected to the third cylinder seat 341 through a pin shaft 348, and the clamping plate 347 is provided with an adjustable bolt 340; in this embodiment, the first cylinder 33 drives the first grasping mechanism 34 to move up and down to approach or move away from the chord of the truss, and the third cylinder shaft is driven up and down by the third cylinder 342 to drive the connecting head 343, which in turn drives the first connecting rod 344, the second connecting rod 345, and the third connecting rod 346, thereby driving the two clamping plates 347 located respectively on the two third connecting rods 346 to clamp and release.

[0019] The frame 31 described in this embodiment is provided with guide rails 311 at both ends in the width direction, and the cross bar 32 is provided with a slider 321 adapted to the guide rail 311, and the guide rail 311 and the slider 321 are slidably arranged; it also includes a fourth cylinder for driving the slider 321 to slide. In this embodiment, there is a distance between the chord storage rack 11 and the web storage rack 12 of the truss. After the chord of the truss is grabbed, it is necessary to slide along the guide rail 311 through the slider 321, and then the truss is assembled in the air and transferred to the tire frame 2.

[0020] In this embodiment, the first cylinder 33 is provided with a guide unit 331 for preventing the cylinder piston shaft from rotating. The guide unit 331 includes a base plate 332. Two guide rods 333 are arranged at intervals above the base plate 332. The first cylinder 33 is arranged between the two guide rods 333. The middle parts of the two guide rods 333 are connected by the same flange 334. The base plate 332 is located below the cross bar 32, and the flange 334 is located above the cross bar 32. The function of the guide unit 331 in this embodiment is to prevent the piston shaft of the cylinder from rotating and ensure the normal operation of the first cylinder 33.

[0021] In this embodiment, a limiting device 4 is provided below the cross bar 32 . The limiting device 4 is in a “U” shape, and the cross bar 32 is located between the limiting devices 4 .

Claims

1. A feeding device for welding trusses, characterized in that: The invention comprises a silo (1) for storing truss raw materials, a tire frame (2) for providing a space for welding trusses is provided on one side of the silo (1), and a grabbing sling (3) for transferring the truss raw materials on the silo (1) to the top of the tire frame (2); The grabbing sling (3) comprises a frame (31), the four corners of the frame (31) are connected to a sling rope (310), the two ends of the frame (31) in the length direction are provided with a cross bar (32) slidably arranged along the frame (31), the cross bar (32) is provided with two first cylinders (33) arranged at intervals and adapted to the position of the chord of the truss, the first cylinder axis of the first cylinder (33) is connected to a first grabbing mechanism (34) for grabbing the chord, a plurality of second cylinders (35) adapted to the position of the web of the truss are provided in the middle of the frame (31), the second cylinder axis of the second cylinder (35) is connected to a second grabbing mechanism (36) for grabbing the web.

2. The feeding device for welding trusses according to claim 1, characterized in that: The silo (1) comprises two chord storage racks (11) arranged in parallel for storing chords of a truss, a web storage rack (12) for storing webs of a truss is arranged between the two chord storage racks (11), the chord storage rack (11) comprises a first support rack (111) located on the ground, a first column (112) adapted to the shape of the chord is arranged above the first support rack (111), and the first column (112) is respectively located on both sides of the chord; the web storage rack (12) comprises a second support rack (121) located on the ground, a second column (122) adapted to the shape of the web is arranged above the second support rack (121), and the second column (122) is respectively located on both sides of the chord.

3. The feeding device for welding trusses according to claim 2, characterized in that: A first oblique rod (113) is provided between the first column (112) and the first support frame (111), and a second oblique rod (123) is provided between the second column (122) and the second support frame (121).

4. The feeding device for welding trusses according to claim 1, characterized in that: The first gripping mechanism (34) comprises a third cylinder seat (341), wherein the third cylinder seat (341) is provided with a third cylinder (342), the upper end of the third cylinder shaft of the third cylinder (342) is connected to a connecting head (343), the connecting head (343) is in a "T" shape, the left and right ends of the connecting head (343) are respectively rotatably connected to the first connecting rod (344), the other end of the first connecting rod (344) is rotatably connected to the second connecting rod (345), the lower part of the second connecting rod (345) is rotatably connected to the third connecting rod (346), the lower part of the third connecting rod (346) is fixedly connected to a clamping plate (347), the middle part of the third connecting rod (346) is rotatably connected to the third cylinder seat (341) through a pin shaft (348), and the clamping plate (347) is provided with an adjustable bolt (340).

5. The feeding device for welding trusses according to claim 1, characterized in that: The frame (31) is provided with guide rails (311) at both ends in the width direction, the cross bar (32) is provided with a slider (321) adapted to the guide rail (311), the guide rail (311) and the slider (321) are slidably arranged, and also includes a fourth cylinder for driving the slider (321) to slide.

6. The feeding device for welding trusses according to claim 1, characterized in that: The first cylinder (33) is provided with a guide unit (331) for preventing the cylinder piston shaft from rotating. The guide unit (331) includes a bottom plate (332). Two guide rods (333) are arranged at intervals above the bottom plate (332). The first cylinder (33) is arranged between the two guide rods (333). The middle parts of the two guide rods (333) are connected by a same flange (334). The bottom plate (332) is located below the cross bar (32), and the flange (334) is located above the cross bar (32).

7. The feeding device for welding trusses according to claim 1, characterized in that: A limiting device (4) is provided below the cross bar (32), the limiting device (4) is in a "U" shape, and the cross bar (32) is located between the limiting devices (4).

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