Crane main beam welding positioning device

Abstract

The utility model discloses a crane girder welding positioning device which comprises a welding platform, a groove is formed in the top end of the welding platform, a support is fixedly connected to the top end of the welding platform, a positioning mechanism is arranged on the outer wall of the support, and clamping wheels are extruded to drive fixing rods to apply pressure to limiting plates. The limiting plates move in the limiting columns to compress the springs, the springs exert supporting force in the opposite direction on the clamping wheels by means of the elastic force of the springs, the clamping wheels on the two sides position the crane main beam, the hydraulic cylinders are started, the hydraulic rods are used for driving the clamping plates to clamp and fix the crane main beam, and in the welding process, the clamping plates are driven by the hydraulic rods to clamp and fix the crane main beam. If welding is hindered by the clamping plate, the lead screw is rotated, the lead screw drives the moving block to move in the sliding rail, the moving block drives the connecting plate to move, the connecting plate drives the clamping plate to move to replace the clamping position of the crane main beam, and the positioning mechanisms on the two sides can continuously position the crane main beam.

Description

TECHNICAL FIELD

[0001] The utility model relates to crane welding technical field, concretely is a crane girder welding positioning device. BACKGROUND

[0002] The crane is the multi -action hoisting machinery of vertical promotion and horizontal handling heavy object in a certain range, also called the heaven car, the line, the crane etc., and the crane girder is the main stressed structural member of crane, needs to use the welding device when manufacturing crane girder.

[0003] The utility model discloses a kind of crane girder welding devices with the publication number CN212264991U, including welding platform, clamping mechanism and rolling mechanism are equipped on it, clamping mechanism includes two movable clamping plates symmetrically distributed in the both ends of welding platform, a plurality of vertical support plates are distributed with interval on the welding platform of the side opposite to two movable clamping plates, clamping hydraulic cylinder is horizontally erected on vertical support plate, the piston rod of clamping hydraulic cylinder is fixedly connected on corresponding movable clamping plate, two columns are symmetrically distributed on the both sides of welding platform, two columns top are connected with beam and form door-shaped frame, two columns bottom are slidably arranged along the length direction of welding platform, first welding gun seat is connected on the opposite side of two columns, first welding gun is rotatably arranged on it, two second welding gun seats are arranged below the both ends of beam, second welding gun is rotatably arranged on it.The utility model is convenient for workpiece feeding, clamps workpiece firmly, can simultaneously carry out the welding of four welds, can greatly improve welding efficiency and welding quality.

[0004] In the above technical solution, the crane girder is fixed on the welding platform by the clamping device. When the movable clamping plates clamp the crane girder, it is easy to hinder the welding of the crane girder. Therefore, the clamping device needs to be loosened, the position of the crane girder needs to be adjusted again, and then the clamping device is used for fixation. During the operation process, the position of the crane girder is easy to deviate, which greatly reduces the welding efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a crane girder welding positioning device to solve the problems in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a crane girder welding positioning device, comprising a welding platform, a groove is formed in the top end of the welding platform, a rotating roller is rotatably connected to the inner wall of the groove, a bracket is fixedly connected to the top end of the welding platform, a positioning mechanism is arranged on the outer wall of the bracket, a sliding rail is formed in the outer wall of the bracket, a moving block is slidably connected to the inner wall of the sliding rail, and a connecting plate is fixedly connected to the outer wall of the moving block.

[0007] As a further preferred of the technical solution, the inner wall of the sliding rail is rotationally connected with a lead screw, the lead screw penetrates through and is threadedly connected with the inside of the moving block, the outer wall of the connecting plate is fixedly connected with a hydraulic cylinder, and the outer wall of the hydraulic cylinder is fixedly connected with a hydraulic rod.

[0008] As a further preferred of the technical solution, the hydraulic rod is fixedly connected with a clamping plate on the side away from the hydraulic cylinder, the outer wall of the connecting plate is fixedly connected with a limiting column, and the inner wall of the limiting column is slidingly connected with a limiting plate.

[0009] As a further preferred of the technical solution, one side of the limiting plate is fixedly connected with a spring, the other side of the limiting plate is fixedly connected with a fixed rod, the fixed rod penetrates through and is slidingly connected with the inner wall of the limiting column, and the end of the fixed rod located on the outer wall of the limiting column is rotationally connected with a clamping wheel.

[0010] As a further preferred of the technical solution, the outer side of the welding platform is provided with a turnover mechanism, and the outer wall of the welding platform is provided with a positioning groove.

[0011] As a further preferred of the technical solution, the inside bottom end of the positioning groove is fixedly connected with an electric pusher, the top end of the electric pusher is fixedly connected with a fixed plate, the top end of the fixed plate is fixedly connected with a connecting block, and the fixed plate is slidingly connected with the inner wall of the positioning groove.

[0012] As a further preferred of the technical solution, the outer wall of the connecting block is fixedly connected with a motor, the outer wall of the motor is fixedly connected with a connecting disc, and the inner wall of the connecting disc is fixedly connected with a rubber clamping block.

[0013] The utility model provides a kind of crane girder welding positioning device, with following beneficial effects:

[0014] (1) the utility model discloses a kind of clamping wheels are extruded to drive fixed rod to exert pressure on limiting plate, limiting plate moves in the inside of limiting column to compress spring, spring exerts a counter-supporting force on clamping wheel by its own elasticity, so that the clamping wheel on both sides is positioned crane girder, opens hydraulic cylinder, utilizes hydraulic rod to drive clamping plate to clamp and fix crane girder, if clamping plate causes hindrance to welding during welding, rotate lead screw, lead screw drives moving block to move in the inside of sliding rail, moving block drives connecting plate to move, connecting plate drives clamping plate to move and replace the clamping position of crane girder, and the positioning mechanism on both sides can continuously position crane girder.

[0015] (2) The utility model discloses a fixed plate is moved upwards in the inside of positioning groove through electric pusher, and the fixed plate utilizes connecting block and drives the connecting disc to move upwards, and the main beam of crane is moved, and the main beam of crane is inserted into the inside of connecting disc and is extruded to the rubber clamping block, and the main beam of crane is fixed in the inside of connecting disc, and the motor is started, and the motor drives the connecting disc to rotate, and then drives the main beam of crane to overturn, and when overturning to the appropriate position, the electric pusher is started and the main beam of crane is placed in the original place, and the quick overturning of the main beam of crane is realized, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is whole three-dimensional appearance structure schematic diagram of the utility model;

[0017] Fig. 2 It is whole sectional structure schematic diagram of the utility model;

[0018] Fig. 3 It is positioning mechanism structure schematic diagram of the utility model;

[0019] Fig. 4 It is overturning mechanism structure schematic diagram of the utility model.

[0020] In the drawing: 1, welding platform;2, recess;3, rotating roller;4, support;5, positioning mechanism;51, sliding rail;52, screw;53, moving block;54, connecting plate;55, hydraulic cylinder;56, hydraulic rod;57, limit post;58, spring;59, limit plate;510, fixed rod;511, clamping wheel;512, clamping plate;6, overturning mechanism;61, positioning groove;62, electric pusher;63, fixed plate;64, connecting block;65, motor;66, connecting disc;67, rubber clamping block. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described in connection with the drawings in the embodiments of the utility model.

[0022] The utility model provides technical scheme: Figs. 1 to 4 As shown in the figure, in the embodiment, a crane main beam welding positioning device, including welding platform 1, the top of welding platform 1 is provided with recess 2, the inner wall of recess 2 is rotatably connected with rotating roller 3, the top of welding platform 1 is fixedly connected with support 4, the outer wall of support 4 is provided with positioning mechanism 5, the outer wall of support 4 is provided with sliding rail 51, the inner wall of sliding rail 51 is slidably connected with moving block 53, the outer wall of moving block 53 is fixedly connected with connecting plate 54.

[0023] The inner wall of the sliding rail 51 is rotationally connected with a lead screw 52, the lead screw 52 penetrates and is threadedly connected to the inside of a moving block 53, the outer wall of a connecting plate 54 is fixedly connected with a hydraulic cylinder 55, the outer wall of the hydraulic cylinder 55 is fixedly connected with a hydraulic rod 56.

[0024] The moving block 53 moves in the inside of the sliding rail 51 to drive the connecting plate 54 to move, thereby adjusting the position of the clamping plate 512.

[0025] The side, away from the hydraulic cylinder 55, of the hydraulic rod 56 is fixedly connected with the clamping plate 512, the outer wall of the connecting plate 54 is fixedly connected with a limiting column 57, and the inner wall of the limiting column 57 is slidingly connected with a limiting plate 59.

[0026] The clamping plate 512 on both sides can be adjusted according to the actual situation of welding, without hindering welding.

[0027] The side of the limiting plate 59 is fixedly connected with a spring 58, the other side of the limiting plate 59 is fixedly connected with a fixed rod 510, the fixed rod 510 penetrates and is slidingly connected to the inner wall of the limiting column 57, and the end of the fixed rod 510, located at the outer wall of the limiting column 57, is rotationally connected with a clamping wheel 511.

[0028] The clamping wheel 511 can assist the clamping plate 512 in positioning the girder and maintaining the position of the girder.

[0029] The outer side of the welding platform 1 is provided with a turnover mechanism 6, and the outer wall of the welding platform 1 is provided with a positioning groove 61.

[0030] The turnover mechanism 6 can quickly turn over the girder, greatly improving the work efficiency.

[0031] The inside bottom end of the positioning groove 61 is fixedly connected with an electric pusher 62, the top end of the electric pusher 62 is fixedly connected with a fixed plate 63, the top end of the fixed plate 63 is fixedly connected with a connecting block 64, and the fixed plate 63 is slidingly connected to the inner wall of the positioning groove 61.

[0032] The electric pusher 62 can drive the fixed plate 63 to move up and down in the vertical direction, thereby driving the connecting block 64 to move up and down.

[0033] The outer wall of the connecting block 64 is fixedly connected with a motor 65, the outer wall of the motor 65 is fixedly connected with a connecting disc 66, and the inner wall of the connecting disc 66 is fixedly connected with a rubber clamping block 67.

[0034] The connecting disc 66 can rotate to drive the girder to rotate, increasing the practicability of the device.

[0035] The utility model provides a kind of crane girder welding positioning device, specific working principle is as follows:

[0036] When using, the crane girder needing welding is placed above the welding platform 1, the crane girder extrudes the clamping wheel 511, the clamping wheel 511 is extruded to drive the fixed rod 510 to exert pressure to the limiting plate 59, the limiting plate 59 moves inside the limiting column 57 to compress the spring 58, the spring 58 exerts a counter-supporting force to the clamping wheel 511 by its own elasticity, so that the clamping wheel 511 on both sides positions the crane girder, opens the hydraulic cylinder 55, utilizes hydraulic rod 56 to drive clamping plate 512 to clamp and fix the crane girder, if clamping plate 512 causes hindrance to welding during welding, rotate screw rod 52, the screw rod 52 drives moving block 53 to move inside sliding rail 51, moving block 53 drives connecting plate 54 to move, connecting plate 54 drives clamping plate 512 to move and replace the clamping position of crane girder, and the positioning mechanism 5 on both sides can continuously position the crane girder, if it needs to overturn crane girder, open electric pusher 62, electric pusher 62 drives fixed plate 63 to move upwards inside positioning groove 61, fixed plate 63 drives connecting disc 66 to move upwards using connecting block 64, moves crane girder, inserts crane girder inside connecting disc 66 to extrude rubber clamping block 67, fixes crane girder inside connecting disc 66, opens motor 65, motor 65 drives connecting disc 66 to rotate, in turn drives crane girder to overturn, overturns to appropriate position, starts electric pusher 62 and places crane girder at original place, realizes the rapid overturning of crane girder, improves work efficiency.

[0037] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A crane girder welding positioning device comprising a welding platform (1), characterized in that: The top of the welding platform (1) is provided with a groove (2), the inner wall of the groove (2) is rotatably connected with a rotating roller (3), the top of the welding platform (1) is fixedly connected with a support (4), the outer wall of the support (4) is provided with a positioning mechanism (5), the outer wall of the support (4) is provided with a sliding rail (51), the inner wall of the sliding rail (51) is slidably connected with a moving block (53), and the outer wall of the moving block (53) is fixedly connected with a connecting plate (54).

2. A welding positioning device for a crane girder as claimed in claim 1, characterized in that The inner wall of the sliding rail (51) is rotatably connected with a lead screw (52), the lead screw (52) penetrates and is threadedly connected to the inside of the moving block (53), the outer wall of the connecting plate (54) is fixedly connected with a hydraulic cylinder (55), and the outer wall of the hydraulic cylinder (55) is fixedly connected with a hydraulic rod (56).

3. A welding positioning device for a crane girder as claimed in claim 2, characterized in that: The side, away from the hydraulic cylinder (55), of the hydraulic rod (56) is fixedly connected with a clamping plate (512), the outer wall of the connecting plate (54) is fixedly connected with a limiting column (57), and the inner wall of the limiting column (57) is slidably connected with a limiting plate (59).

4. A welding fixture for a main girder of a crane as defined in claim 3, characterized in that: One side of the limiting plate (59) is fixedly connected with a spring (58), the other side of the limiting plate (59) is fixedly connected with a fixed rod (510), the fixed rod (510) penetrates and is slidably connected to the inner wall of the limiting column (57), and one end of the fixed rod (510) located at the outer wall of the limiting column (57) is rotatably connected with a clamping wheel (511).

5. A welding fixture for a main girder of a crane as defined in claim 4, characterized in that: The outer side of the welding platform (1) is provided with a turnover mechanism (6), and the outer wall of the welding platform (1) is provided with a positioning groove (61).

6. A welding fixture for a main girder of a crane as defined in claim 5, characterized in that: The inside bottom of the positioning groove (61) is fixedly connected with an electric pusher (62), the top of the electric pusher (62) is fixedly connected with a fixed plate (63), the top of the fixed plate (63) is fixedly connected with a connecting block (64), and the fixed plate (63) is slidably connected to the inner wall of the positioning groove (61).

7. A welding positioning device for a main girder of a crane according to claim 6, characterized in that: The outer wall of the connecting block (64) is fixedly connected with a motor (65), the outer wall of the motor (65) is fixedly connected with a connecting disc (66), and the inner wall of the connecting disc (66) is fixedly connected with a rubber clamping block (67).

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