Hoisting mechanism of tower crane

Abstract

The utility model belongs to the technical field of tower cranes, and particularly relates to a tower crane hoisting mechanism which comprises a rotating arm and a moving frame, rotating grooves are formed in the opposite sides of the bottom of the rotating arm, a second fixing plate is fixedly connected to one side of the moving frame, a safety structure is arranged on the second fixing plate, and the safety structure is fixedly connected with the rotating arm. According to the cable take-up device, the poke rod, the pawl, the spring, the ratchet wheel and the like are arranged, the second servo motor drives the rotating roller to rotate through the rotating column, the pawl is clamped on the ratchet wheel again, then the first servo motor drives the take-up disc to take up a cable, and therefore the cable take-up device can take up the cable. And the winding disc drives the ratchet wheel to rotate through the rotating column, and through cooperation of the ratchet wheel and the pawl, the situation that due to damage of the first servo motor, the winding disc suddenly releases the cable, the lifted object suddenly falls off, and workers on the ground are hurt is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to tower crane technical field especially relates to a tower crane hoisting mechanism. BACKGROUND

[0002] Tower crane is short for tower machine, also called tower crane, it is a kind of rotary crane, it originates from western europe, it is divided into horizontal type and compression bar type according to the rotary arm form, the working space is big, it is mainly used in vertical and horizontal conveying of material and installation of building component in housing construction.

[0003] But in the existing equipment, most tower cranes do not have safety structure, when working, if the servo motor is damaged, it is easy to cause the winding disc to suddenly release the rope, so that the hoisted object suddenly falls, and the ground worker is easily hurt, therefore, a tower crane hoisting mechanism is proposed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a tower crane hoisting mechanism.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tower crane hoisting mechanism, including rotary arm and mobile frame, the opposite side of rotary arm bottom is equipped with rotary groove, one side of mobile frame is fixedly connected with second fixed plate, the second fixed plate is equipped with safety structure, the inside of mobile frame is fixedly connected with fixed column, the bottom of fixed column is equipped with moving groove, the fixed column is equipped with moving structure;

[0006] The safety structure includes the second servo motor fixedly connected with one side of the inside of the mobile frame, the output shaft of the second servo motor is fixedly connected with the rotating column, and the rotating column is rotatably connected with the rotating roller.

[0007] Further description of the above technical scheme:

[0008] The upper surface of the mobile frame is fixedly connected with two first fixed plates, the opposite sides of the two first fixed plates are rotatably connected with two moving wheels, each moving wheel is movably connected in the corresponding rotary groove, the upper surface of the mobile frame is fixedly connected with the fixed seat, the upper surface of the fixed seat is fixedly connected with the double-shaft servo motor, the two output shafts of the double-shaft servo motor are fixedly connected with rotating rods, and one end of each rotating rod is fixedly connected with one side of the corresponding moving wheel.

[0009] Further description of the above technical scheme:

[0010] The mobile frame is internally rotatably connected with a winding disc, a cable is movably arranged on the winding disc, one end of the cable is fixedly connected to the winding disc, the other end of the cable is fixedly connected with a lifting hook, one side of the mobile frame is fixedly connected with a first servo motor, and an output shaft of the first servo motor is fixedly connected with one side of the winding disc.

[0011] As a further description of the above technical solution:

[0012] The upper surface of the second fixed plate is slidably connected with a sliding rod, the upper surface of the sliding rod is fixedly connected with a pushing rod, the bottom of the pushing rod is in abutment with the rotating roller, the bottom of the sliding rod is fixedly connected with a ratchet, a spring is movably arranged on the sliding rod, one end of the spring is fixedly connected with the bottom of the second fixed plate, and the other end of the spring is fixedly connected with the upper surface of the ratchet.

[0013] As a further description of the above technical solution:

[0014] One side of the winding disc is fixedly connected with a rotating column, one end of the rotating column is rotatably connected to one side of the mobile frame and fixedly connected with a ratchet wheel, and the ratchet wheel is matched with the ratchet.

[0015] As a further description of the above technical solution:

[0016] The mobile structure comprises a threaded rod rotatably connected in the mobile frame, a moving block is threadedly connected on the threaded rod, the moving block is slidably connected in a moving groove, the bottom of the moving block is fixedly connected with a connecting frame, a pulley is rotatably connected in the connecting frame, and the pulley is in abutment with the cable.

[0017] As a further description of the above technical solution:

[0018] One side of the mobile frame is fixedly connected with a third servo motor, and an output shaft of the third servo motor is fixedly connected with one end of the threaded rod.

[0019] The utility model has the advantages of the following beneficial effects:

[0020] 1、 Compared with the prior art, the tower crane hoisting mechanism, through the setting of the second servo motor, the rotating column, the rotating roller, the sliding rod, the pushing rod, the pawl, the spring and the ratchet wheel, the second servo motor drives the rotating column to rotate, the rotating column drives the pushing rod to move through the rotating roller, the pushing rod drives the pawl to move through the sliding rod, the pawl is separated from the ratchet wheel, then the first servo motor drives the winding disc to rotate, the cable drives the hook to pay out the rope downwards, then the hook hoists the object, the second servo motor drives the rotating roller to rotate through the rotating column, the pawl is reconnected to the ratchet wheel, then the first servo motor drives the winding disc to collect the cable, the object on the hook is lifted, the winding disc drives the ratchet wheel to rotate through the rotating column, through the cooperation of the ratchet wheel and the pawl, the winding disc is prevented from suddenly releasing the cable due to damage of the first servo motor, the lifted object is prevented from suddenly falling and hurting the staff on the ground.

[0021] 2、 Compared with the prior art, the tower crane hoisting mechanism, through the setting of the third servo motor, the threaded rod, the moving block, the connecting frame and the pulley, the third servo motor drives the threaded rod to rotate, the threaded rod drives the moving block to move, the moving block drives the pulley to move through the connecting frame, the sliding pulley drives the cable to be evenly wound on the winding disc, which is beneficial to the next time of releasing the cable, the use is more convenient, and the overall appearance and tidiness are improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective structural schematic view of the tower crane hoisting mechanism;

[0023] Figure 2 It is a plan view of the tower crane hoisting mechanism;

[0024] Figure 3 It is a fixed seat and double-shaft servo motor schematic view of the tower crane hoisting mechanism;

[0025] Figure 4 It is an insurance structure schematic view of the tower crane hoisting mechanism;

[0026] Figure 5 It is an insurance structure explosion view of the tower crane hoisting mechanism;

[0027] Figure 6 It is a moving structure schematic view of the tower crane hoisting mechanism;

[0028] Figure 7 It is a moving structure explosion view of the tower crane hoisting mechanism.

[0029] LEGEND:

[0030] 1, rotating arm; 2, moving frame; 3, first fixed plate; 4, fixed seat; 5, double-shaft servo motor; 6, moving wheel; 7, rotating rod; 8, second fixed plate; 9, safety structure; 901, second servo motor; 902, rotating column; 903, rotating roller; 904, sliding rod; 905, pulling rod; 906, pawl; 907, spring; 908, ratchet wheel; 10, fixed column; 11, moving structure; 111, third servo motor; 112, threaded rod; 113, moving block; 114, connecting frame; 115, pulley; 12, first servo motor; 13, cable. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Referring to Figures 1 to 7 The utility model provides a kind of tower crane hoisting mechanism comprising rotating arm 1 and moving frame 2, rotating arm 1 bottom relative side is all set with rotating groove, the upper surface of moving frame 2 is fixedly connected with two first fixed plates 3, the side of two first fixed plates 3 away from each other is rotatably connected with two moving wheels 6, each moving wheel 6 is movably connected in corresponding rotating groove, the upper surface of moving frame 2 is fixedly connected with fixed seat 4, the upper surface of fixed seat 4 is fixedly connected with double-shaft servo motor 5, the two output shafts of double-shaft servo motor 5 are all fixedly connected with rotating rod 7, the side of each rotating rod 7 is respectively fixedly connected with corresponding moving wheel 6, double-shaft servo motor 5 drives corresponding moving wheel 6 to rotate by two rotating rods 7, moving wheel 6 rotates in rotating groove, so that moving wheel 6 drives moving frame 2 to move by first fixed plate 3, it is convenient to move object to specified position, moving frame 2 is rotatably connected with winding disc inside, winding disc is movably provided with cable 13, one end of cable 13 is fixedly connected on winding disc, other end is fixedly connected with lifting hook, one side of moving frame 2 is fixedly connected with first servo motor 12, the side of winding disc is fixedly connected with the output shaft of first servo motor 12, one side of moving frame 2 is fixedly connected with second fixed plate 8, second fixed plate 8 is equipped with safety structure 9, moving frame 2 is fixedly connected with fixed column 10 inside, moving groove is formed in the bottom of fixed column 10, and moving structure 11 is equipped on fixed column 10;

[0033] In order to avoid the purpose of falling objects, the safety structure 9 includes a second servo motor 901 fixedly connected to the inside of the moving frame 2, a rotating column 902 fixedly connected to the output shaft of the second servo motor 901, a rotating roller 903 rotatably connected to one end of the rotating column 902, a sliding rod 904 slidingly connected to the upper surface of the second fixed plate 8, a push rod 905 fixedly connected to the upper surface of the sliding rod 904, the bottom of the push rod 905 abutting the rotating roller 903, a pawl 906 fixedly connected to the bottom of the sliding rod 904, a spring 907 movably arranged on the sliding rod 904, one end of the spring 907 fixedly connected to the bottom of the second fixed plate 8, the other end fixedly connected to the upper surface of the pawl 906, a rotating column fixedly connected to one side of the winding disc, the rotating column rotatably connected to one side of the moving frame 2 and fixedly connected with a ratchet wheel 908, the ratchet wheel 908 is matched with the pawl 906, the second servo motor 901 drives the rotating column 902 to rotate, the rotating column 902 drives the push rod 905 to move through the rotating roller 903, the push rod 905 drives the pawl 906 to move through the sliding rod 904, so that the pawl 906 is disengaged from the ratchet wheel 908, then the first servo motor 12 drives the winding disc to rotate, the cable 13 drives the hook to pay out, then the hook hoists the object, the second servo motor 901 drives the rotating roller 903 to rotate through the rotating column 902, so that the pawl 906 is reconnected to the ratchet wheel 908, then the first servo motor 12 drives the winding disc to collect the cable 13, so that the object on the hook rises, the winding disc drives the ratchet wheel 908 to rotate through the rotating column, and the cooperation of the ratchet wheel 908 and the pawl 906 avoids the sudden release of the cable 13 by the winding disc due to damage of the first servo motor 12, so that the hoisted object falls suddenly and injures the staff on the ground;

[0034] In order to realize the purpose of moving, the moving structure 11 includes a threaded rod 112 rotatably connected inside the moving frame 2, a third servo motor 111 fixedly connected to one side of the moving frame 2, the output shaft of the third servo motor 111 fixedly connected to one end of the threaded rod 112, a moving block 113 threadedly connected to the threaded rod 112, the moving block 113 slidingly connected in the moving groove, a connecting frame 114 fixedly connected to the bottom of the moving block 113, a pulley 115 rotatably connected inside the connecting frame 114, the pulley 115 abutting the cable 13, when collecting the cable 13, the third servo motor 111 drives the threaded rod 112 to rotate, the threaded rod 112 drives the moving block 113 to move, the moving block 113 drives the pulley 115 to move through the connecting frame 114, so that the pulley 115 uniformly winds the cable 13 on the winding disc, which is conducive to the next release of the cable 13, more convenient to use, and improves the overall appearance and neatness.

[0035] Working principle: the second servo motor 901 drives the rotating column 902 to rotate, the rotating column 902 drives the rotating roller 903 to move through the rotating roller 903, the actuating lever 905 drives the pawl 906 to move through the sliding rod 904, the pawl 906 is disengaged from the ratchet wheel 908, then the first servo motor 12 drives the winding disc to rotate, the cable 13 drives the hook to put down the rope, then the hook hangs the object, the second servo motor 901 drives the rotating roller 903 to rotate through the rotating column 902, the pawl 906 is reconnected to the ratchet wheel 908, then the winding disc is collected through the first servo motor 12, the object on the hook is lifted, the winding disc drives the ratchet wheel 908 to rotate through the rotating column, through the cooperation of the ratchet wheel 908 and the pawl 906, the cable 13 is prevented from being suddenly released by the winding disc due to damage of the first servo motor 12, so that the lifted object is suddenly dropped, and the ground worker is hurt, when the cable 13 is collected, the third servo motor 111 drives the threaded rod 112 to rotate, the threaded rod 112 drives the moving block 113 to move, the moving block 113 drives the pulley 115 to move through the connecting frame 114, the pulley 115 drives the cable 13 to be evenly wound on the winding disc, which is beneficial to the next release of the cable 13, more convenient to use, and the overall appearance and neatness are improved.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the utility model have described, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A tower crane hoisting mechanism, comprising a rotating boom (1) and a moving frame (2), characterized in that: The rotating arm (1) has a rotating groove on one side of its bottom. The moving frame (2) is fixedly connected to a second fixing plate (8). The second fixing plate (8) is provided with a safety structure (9). The moving frame (2) is fixedly connected to a fixing column (10). The bottom of the fixing column (10) is provided with a moving groove. The fixing column (10) is provided with a moving structure (11). The safety structure (9) includes a second servo motor (901) fixedly connected to one side of the inside of the movable frame (2). A rotating column (902) is fixedly connected to the output shaft of the second servo motor (901), and a rotating roller (903) is rotatably connected to one end of the rotating column (902).

2. The tower crane hoisting mechanism according to claim 1, characterized in that: Two first fixed plates (3) are fixedly connected to the upper surface of the movable frame (2). Two movable wheels (6) are rotatably connected to the two first fixed plates (3) on opposite sides. Each movable wheel (6) is movably connected in a corresponding rotating groove. A fixed seat (4) is fixedly connected to the upper surface of the movable frame (2). A dual-axis servo motor (5) is fixedly connected to the upper surface of the fixed seat (4). Rotating rods (7) are fixedly connected to the two output shafts of the dual-axis servo motor (5). One end of each rotating rod (7) is fixedly connected to one side of the corresponding movable wheel (6).

3. The tower crane hoisting mechanism according to claim 1, characterized in that: The movable frame (2) is rotatably connected to a winding reel, and a cable (13) is movably mounted on the winding reel. One end of the cable (13) is fixedly connected to the winding reel, and the other end is fixedly connected to a hook. A first servo motor (12) is fixedly connected to one side of the movable frame (2), and the output shaft of the first servo motor (12) is fixedly connected to one side of the winding reel.

4. The tower crane hoisting mechanism according to claim 3, characterized in that: A sliding rod (904) is slidably connected through the upper surface of the second fixed plate (8). A toggle rod (905) is fixedly connected to the upper surface of the sliding rod (904). The bottom of the toggle rod (905) is in contact with the rotating roller (903). A pawl (906) is fixedly connected to the bottom of the sliding rod (904). A spring (907) is movably provided on the sliding rod (904). One end of the spring (907) is fixedly connected to the bottom of the second fixed plate (8), and the other end is fixedly connected to the upper surface of the pawl (906).

5. The tower crane hoisting mechanism according to claim 4, characterized in that: A rotating column is fixedly connected to one side of the winding reel. One end of the rotating column is rotatably connected to one side of the moving frame (2) and fixedly connected to a ratchet (908). The ratchet (908) is adapted to the pawl (906).

6. The tower crane hoisting mechanism according to claim 1, characterized in that: The movable structure (11) includes a threaded rod (112) rotatably connected inside the movable frame (2), a movable block (113) is threadedly connected to the threaded rod (112), the movable block (113) is slidably connected in the movable groove, a connecting frame (114) is fixedly connected to the bottom of the movable block (113), a pulley (115) is rotatably connected inside the connecting frame (114), and the pulley (115) is in contact with the cable (13).

7. A tower crane hoisting mechanism according to claim 6, characterized in that: A third servo motor (111) is fixedly connected to one side of the movable frame (2), and the output shaft of the third servo motor (111) is fixedly connected to one end of the threaded rod (112).

Images