Double-rope-winding lifting hook bridge crane

Abstract

The utility model discloses a bridge crane with a double-rope-winding lifting hook, which belongs to the technical field of cranes and comprises two moving blocks and a winch drum, two ends of the winch drum are rotatably connected with the corresponding moving blocks respectively, two steel wire ropes are wound on the winch drum, and each steel wire rope is in transmission connection with a corresponding movable pulley on a lifting hook component. And the free end of each steel wire rope is fixedly arranged with the moving block. According to the lifting hook assembly, by arranging the winch cylinder, the steel wire ropes and the movable pulley, when the lifting hook assembly is used, the winch cylinder rotates to release or wind the two steel wire ropes at the same time, and the purpose of lifting the lifting hook assembly is achieved; when the two steel wire ropes are arranged for use, the lifting hook assembly is wound by the double steel wire ropes, so that in the lifting process of the lifting hook assembly, when one steel wire rope is accidentally broken, the other steel wire rope can still keep a lifted object and can be normally lifted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane, especially a double-rope hook bridge crane. BACKGROUND

[0002] At present, the crane refers to the multi-action hoisting machinery of vertical lifting and horizontal carrying heavy objects in a certain range. It is also called a sky crane, a hang, a crane; the crane hoists or hoists and moves heavy objects through a hoisting hook or other object taking device. The working process of the crane generally includes lifting, running, descending and returning to the original position and the like. The lifting mechanism lifts the heavy object from the object taking place through the object taking device, moves the heavy object through the running, rotating or amplitude changing mechanism, and returns to the original position after the heavy object is placed at the designated place.

[0003] In the hoisting process, the heavy object needs to be kept in the air for a relatively long time, and special attention is paid to operation safety during this period. The steel wire rope needs to be regularly inspected and regularly replaced during use. However, even so, the steel wire rope will suddenly break when hoisting heavy objects for a long time, which will cause safety accidents. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a double-rope hook bridge crane, which can ensure that the other steel wire rope can still hold the hoisted object and can normally lift when one steel wire rope accidentally breaks during the hoisting process of the hook, and effectively solves the problem of safety accidents caused by the breaking of the steel wire rope in the prior art.

[0005] The utility model adopts the following technical scheme: a double-rope hook bridge crane, comprising two moving blocks, and a winding drum rotatably connected with the corresponding moving block at both ends, two steel wire ropes are wound on the winding drum, each steel wire rope is in driving connection with the corresponding movable pulley on the hook assembly, and the free end of each steel wire rope is fixedly arranged with the moving block.

[0006] Further, two movable pulleys are arranged in the hook assembly, each steel wire rope is in driving connection with the corresponding movable pulley, and the free end of each steel wire rope is fixedly arranged with the moving block.

[0007] Further, the hook assembly is provided with four movable pulleys; two moving blocks are fixedly provided with a connecting plate, the upper end surface of the connecting plate is rotatably connected with a fixed pulley set, the fixed pulley set comprises coaxially fixed first and second fixed pulleys; the right steel wire rope is a first steel wire rope, the left steel wire rope is a second steel wire rope, the first steel wire rope is in transmission connection with the rightmost movable pulley, then in transmission connection with the first fixed pulley, then in transmission connection with the leftmost movable pulley, then the free end of the first steel wire rope is fixedly arranged with the moving block; the second steel wire rope is in transmission connection with the left second movable pulley, then in transmission connection with the second fixed pulley, then in transmission connection with the right second movable pulley, then the free end of the second steel wire rope is fixedly arranged with the moving block.

[0008] Further, the two moving blocks are fixedly provided with a balance plate, and the free ends of the two steel wire ropes are fixedly arranged with the balance plate.

[0009] Further, the upper end surface of the connecting plate is fixedly provided with a bearing seat, the bearing seat is rotatably connected with a rotating shaft, the rear end of the rotating shaft is fixedly provided with a second fixed pulley, and the rear surface of the second fixed pulley is fixedly provided with a first fixed pulley.

[0010] Further, the hook assembly comprises a shell and a hook, the movable pulleys are rotatably connected in the shell, and the top end of the hook is hingedly connected to the lower end of the shell.

[0011] Further, the shell is fixedly provided with a fixed shaft, and the movable pulleys are rotatably connected on the fixed shaft.

[0012] Further, the moving block is provided with a plurality of rollers in the front-rear direction, and each roller is rotatably connected with the moving block; a supporting plate is fixedly arranged on the moving block on the left side, the upper end surface of the supporting plate is fixedly provided with a moving motor and a first speed reducer gearbox, the output shaft of the moving motor is fixedly arranged with the input shaft of the first speed reducer gearbox, and the output shaft of the first speed reducer gearbox is fixedly arranged with the corresponding roller.

[0013] Further, the upper end surface of the connecting plate is fixedly provided with a lifting motor, the upper end surface of the moving block on the left side is fixedly provided with a second speed reducer gearbox, the output shaft of the lifting motor is fixedly arranged with the input shaft of the second speed reducer gearbox, and the output shaft of the second speed reducer gearbox is coaxially fixedly arranged with the left end of the winding drum.

[0014] Further, the right end of the winding drum is rotatably connected with the moving block on the right side through a fixing seat.

[0015] I. This utility model, by setting up a winch, wire ropes and a movable pulley, allows the winch to rotate and simultaneously release or wind up the two wire ropes during use, thereby achieving the purpose of lifting and lowering the hook assembly. By setting up two wire ropes, the hook assembly uses double wire rope winding during use, ensuring that if one wire rope breaks accidentally during the lifting process, the other wire rope can still hold the suspended object and allow for normal lifting and lowering.

[0016] II. This utility model, by setting up four movable pulleys, a first fixed pulley, and a second fixed pulley, allows the device to be used. When the winch is rotated, the winch simultaneously releases or winds up two wire ropes. The wire ropes drive the movable pulleys and the fixed pulley group to rotate, thereby achieving the purpose of raising and lowering the hook. The increased number of movable pulleys in the hook assembly and the use of the fixed pulley group to change the direction of the wire ropes increase the stability of the hook assembly's lifting and lowering. This ensures that if one wire rope breaks accidentally during the lifting process, the other wire rope can still hold the suspended object and can still be raised and lowered normally. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0018] Figure 2 This is a front view structural diagram of the present utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the roller in this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the first reduction gearbox in this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the hook assembly in this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the balance plate in this utility model;

[0024] Figure 8 This is a three-dimensional structural diagram of the fixed pulley block in this utility model;

[0025] Figure 9 This is a schematic diagram of the winding method of the two wire ropes in the second embodiment of this utility model (red represents the first wire rope, and black represents the second wire rope).

[0026] Figure 10 The following is a schematic diagram of two steel wire ropes in the first embodiment of this utility model (red is the first steel wire rope, black is the second steel wire rope);

[0027] Figure 11 The three-dimensional structure diagram of the movable pulley in the utility model.

[0028] In the figure, 1, moving block; 2, winding drum; 3, steel wire rope; 4, movable pulley; 5, connecting plate; 6, fixed pulley block; 7, first fixed pulley; 8, second fixed pulley; 9, first steel wire rope; 10, second steel wire rope; 11, balance plate; 12, bearing seat; 13, rotating shaft; 14, shell; 15, lifting hook; 16, fixed shaft; 17, roller; 18, supporting plate; 19, moving motor; 20, first speed reducer gear box; 21, output shaft; 22, lifting motor; 23, second speed reducer gear box; 24, fixing base. DETAILED DESCRIPTION

[0029] Please refer to Figures 1-11 , the utility model will be described in detail in combination with the drawings and examples:

[0030] The double-steel wire rope winding hook bridge crane, comprising two moving blocks 1 and winding drums 2 rotatably connected with the corresponding moving blocks 1 at two ends, two steel wire ropes 3 are wound on the winding drums 2, each steel wire rope 3 is in transmission connection with the corresponding movable pulley 4 on the hook assembly, and the free end of each steel wire rope 3 is fixedly arranged on the moving block 1.

[0031] In use, the two moving blocks 1 are arranged on the tracks, the tracks are arranged on the upper parts of the left and right sides of the workshop in the longitudinal direction, and the two moving blocks 1 can move forward and backward on the tracks; the two moving blocks 1 drive the winding drums 2, the steel wire ropes 3 and the hook assembly to move forward and backward; the winding drums 2 rotate to release or wind the two steel wire ropes 3, so that the hook assembly is lifted; the hook assembly is lifted by lifting the materials, and then the two moving blocks 1 are moved forward and backward to lift the materials; when the two steel wire ropes 3 are arranged, the hook assembly is wound by the two steel wire ropes 3, so that when one of the steel wire ropes 3 is accidentally broken during the lifting of the hook assembly, the other steel wire rope 3 can still hold the lifted materials and can be normally lifted.

[0032] First embodiment,

[0033] Please refer to Figure 10 In the embodiment, two movable pulleys 4 are arranged in the hook assembly, each steel wire rope 3 is in transmission connection with the corresponding movable pulley 4, and the free end of each steel wire rope 3 is fixedly arranged on the moving block 1; when the lifting hook 15 is lifted, the winding drum 2 is rotated, the winding drum 2 releases or winds the two steel wire ropes 3 at the same time, the steel wire ropes 3 drive the movable pulleys 4 to rotate and realize the purpose of lifting the lifting hook 15.

[0034] Second embodiment,

[0035] Please refer to Figure 9In order to increase the stability of the steel wire rope 3 hoisting hook assembly, four movable pulleys 4 are arranged in the hook assembly in the embodiment; a connecting plate 5 is fixedly arranged between the two moving blocks 1, the upper end surface of the connecting plate 5 is rotatably connected with a fixed pulley set 6, the fixed pulley set 6 includes coaxially fixedly arranged first and second fixed pulleys 7 and 8; the right steel wire rope 3 is a first steel wire rope 9, and the left steel wire rope 3 is a second steel wire rope 10; the first steel wire rope 9 is in transmission connection with the rightmost movable pulley 4, then in transmission connection with the first fixed pulley 7, and then in transmission connection with the leftmost movable pulley 4, and then the free end of the first steel wire rope 9 is fixedly arranged with the moving block 1; the second steel wire rope 10 is in transmission connection with the second movable pulley 4 on the left, then in transmission connection with the second fixed pulley 8, and then in transmission connection with the second movable pulley 4 on the right, and then the free end of the second steel wire rope 10 is fixedly arranged with the moving block 1.

[0036] In use, the winding drum 2 is rotated, the winding drum 2 simultaneously releases or winds up the two steel wire ropes 3, the steel wire ropes 3 drive the movable pulleys 4 and the fixed pulley set 6 to rotate and achieve the purpose of lifting the hook 15, the number of the movable pulleys 4 in the hook assembly is increased, the fixed pulley set 6 is used to change the direction of the steel wire ropes 3, the stability of lifting the hook assembly is increased, and when one steel wire rope 3 is accidentally broken during hoisting of the hook assembly, the other steel wire rope 3 can still hold the hoisted object and can normally lift.

[0037] In the embodiment, a balance plate 11 is fixedly arranged between the two moving blocks 1, and the free ends of the two steel wire ropes 3 are fixedly arranged with the balance plate 11; the steel wire ropes 3 are fixedly arranged with the balance plate 11, the balance plate 11 is fixedly arranged with the two moving blocks 1, and the purpose of fixedly arranging the steel wire ropes 3 with the moving blocks 1 is achieved.

[0038] In the embodiment, the upper end surface of the connecting plate 5 is fixedly provided with a bearing seat 12, the bearing seat 12 is rotatably connected with a rotating shaft 13, the rear end of the rotating shaft 13 is fixedly provided with the second fixed pulley 8, and the rear surface of the second fixed pulley 8 is fixedly provided with the first fixed pulley 7; the first and second fixed pulleys 7 and 8 are rotatably connected with the support seat through the rotating shaft 13.

[0039] In the embodiment, the hook assembly includes a shell 14 and a hook 15, the movable pulleys 4 are rotatably connected in the shell 14, and the top end of the hook 15 is hingedly connected to the lower end of the shell 14; the steel wire ropes 3 are in transmission connection with the movable pulleys 4, the winding drum 2 winds up and releases the steel wire ropes 3, the steel wire ropes 3 drive the movable pulleys 4 to rotate while lifting the shell 14, and the shell 14 drives the hook 15 to lift.

[0040] In the embodiment, a fixed shaft 16 is fixedly arranged in the shell 14, and the movable pulleys 4 are rotatably connected on the fixed shaft 16.

[0041] In the embodiment, a plurality of rollers 17 are arranged in the front-rear direction in the moving block 1, each roller 17 is rotationally connected with the moving block 1, the moving block 1 cooperates with the track, the moving block 1 is realized to walk on the track by rotating on the track, and the moving block 1 is driven to move forward and backward on the track; the moving block 1 on the left side is fixedly provided with a supporting plate 18, the upper end surface of the supporting plate 18 is fixedly provided with a moving motor 19 and a first speed reducer gear box 20, the output shaft 21 of the moving motor 19 is fixedly arranged with the input shaft of the first speed reducer gear box 20, and the output shaft 21 of the first speed reducer gear box 20 is fixedly arranged with the corresponding roller 17 at the left and right ends; the moving motor 19 drives the corresponding rollers 17 on the left and right sides to rotate through the output shaft 21 of the first speed reducer gear box 20, so as to realize the purpose of driving the moving block 1 to move forward and backward.

[0042] In the embodiment, the upper end surface of the connecting plate 5 is fixedly provided with a lifting motor 22, the upper end surface of the moving block 1 on the left side is fixedly provided with a second speed reducer gear box 23, the output shaft 21 of the lifting motor 22 is fixedly arranged with the input shaft of the second speed reducer gear box 23, and the output shaft 21 of the second speed reducer gear box 23 is coaxially fixedly arranged with the left end of the winding drum 2; the right end of the winding drum 2 is rotationally connected with the moving block 1 on the right side through a fixing seat 24; the lifting motor 22 drives the winding drum 2 to rotate through the second speed reducer gear box 23, so as to realize the purpose of driving the winding drum 2 to rotate.

[0043] The working principle of the utility model is: the moving motor 19 drives the rollers 17 to rotate, the moving block 1 drives the winding drum 2, the steel wire rope 3 and the lifting hook 15 to move forward and backward, the lifting motor 22 drives the winding drum 2 to rotate, so as to realize the purpose of lifting the lifting hook 15, and the cooperation realizes the carrying of the material; the number of the movable pulleys 4 in the lifting hook assembly is increased, the direction of the steel wire rope 3 is changed by using the fixed pulley set 6, the stability of the lifting of the lifting hook assembly is increased, and when one steel wire rope 3 is accidentally broken during the lifting of the lifting hook assembly, the other steel wire rope 3 can still hold the hoisted object and can be normally lifted.

Claims

1. A double-rope hook bridge crane, characterized in that: It includes two movable blocks (1) and a winch (2) with its two ends rotatably connected to the corresponding movable blocks (1). Two steel wire ropes (3) are wound on the winch (2). Each steel wire rope (3) is connected to the corresponding movable pulley (4) on the hook assembly. The free end of each steel wire rope (3) is fixedly set to the movable block (1).

2. The double-rope hook bridge crane according to claim 1, characterized in that: The hook assembly is provided with two movable pulleys (4), each wire rope (3) is connected to the corresponding movable pulley (4) for transmission, and the free end of each wire rope (3) is fixedly set with the moving block (1).

3. The double-rope hook bridge crane according to claim 1, characterized in that: The hook assembly is provided with four movable pulleys (4); a connecting plate (5) is fixedly provided between the two moving blocks (1), and a fixed pulley group (6) is rotatably connected to the upper end of the connecting plate (5). The fixed pulley group (6) includes a first fixed pulley (7) and a second fixed pulley (8) fixedly provided on the same axis; the wire rope (3) on the right is the first wire rope (9), and the wire rope (3) on the left is the second wire rope (10). The first wire rope (9) is connected to the rightmost movable pulley (4) and then to the first fixed pulley (7), and then to the leftmost movable pulley (4). The free end of the first wire rope (9) is fixedly provided to the moving block (1); the second wire rope (10) is connected to the second movable pulley (4) on the left and then to the second fixed pulley (8), and then to the second movable pulley (4) on the right. The free end of the second wire rope (10) is fixedly provided to the moving block (1).

4. The double-rope hook bridge crane according to claim 1, characterized in that: A balance plate (11) is fixedly installed between the two moving blocks (1), and the free ends of the two steel wire ropes (3) are fixedly installed with the balance plate (11).

5. The double-rope hook bridge crane according to claim 3, characterized in that: The upper end face of the connecting plate (5) is fixedly provided with a bearing seat (12), and a rotating shaft (13) is rotatably connected inside the bearing seat (12). A second fixed pulley (8) is fixedly provided at the rear end of the rotating shaft (13), and a first fixed pulley (7) is fixedly provided on the rear side of the second fixed pulley (8).

6. The double-rope hook bridge crane according to claim 1, characterized in that: The hook assembly includes a housing (14) and a hook (15), with a movable pulley (4) rotatably connected inside the housing (14) and the top of the hook (15) hinged to the bottom of the housing (14).

7. The double-rope hook bridge crane according to claim 6, characterized in that: A fixed shaft (16) is fixedly installed inside the housing (14), and a movable pulley (4) is rotatably connected to the fixed shaft (16).

8. The double-rope hook bridge crane according to claim 1, characterized in that: The movable block (1) is provided with several rollers (17) along the front-back direction. Each roller (17) is rotatably connected to the movable block (1). A support plate (18) is fixedly provided on the movable block (1) on the left side. A movable motor (19) and a first reduction gearbox (20) are fixedly provided on the upper end face of the support plate (18). The output shaft (21) of the movable motor (19) is fixedly provided with the input shaft of the first reduction gearbox (20). The left and right ends of the output shaft (21) of the first reduction gearbox (20) are fixedly provided with the corresponding rollers (17).

9. The double-rope hook bridge crane according to claim 3, characterized in that: A lifting motor (22) is fixedly installed on the upper end face of the connecting plate (5), and a second reduction gearbox (23) is fixedly installed on the upper end face of the moving block (1) on the left side. The output shaft (21) of the lifting motor (22) is fixedly installed with the input shaft of the second reduction gearbox (23), and the output shaft (21) of the second reduction gearbox (23) is fixedly installed coaxially with the left end of the winch (2).

10. The double-rope hook bridge crane according to claim 9, characterized in that: The right end of the winch (2) is rotatably connected to the right-side movable block (1) via a fixed seat (24).

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