Crane lifting device

Abstract

The utility model belongs to the technical field of hoisting equipment, and particularly relates to a crane lifting device which comprises a lifting seat, an adjusting structure mounted in the middle of the bottom surface of the lifting seat, a clamping structure connected to the middle of the bottom surface of the lifting seat, and a limiting structure mounted at the bottom of the adjusting structure. And limiting wheels are installed at the output ends of the hydraulic cylinders, and ratchet wheels are arranged on the sides, away from the hydraulic cylinders, of the limiting wheels. According to the crane lifting device, when goods are lifted, a hydraulic cylinder is started to drive a limiting wheel to be clamped with a ratchet wheel, so that a rotating shaft and a winding wheel are limited, meanwhile, a cable can be limited to a certain degree through installation of a limiting ring, and therefore shaking of the cable in the lifting process is effectively reduced; the asynchronous motor is started to drive the transmission part to conduct transmission, so that the distance between the two sets of sliding blocks and the connecting plate is effectively adjusted, the distance between the two hooks is adjusted, and goods are conveniently lifted.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, and particularly relates to a hoisting device of a crane. Background Art

[0002] A crane refers to a machine that hangs heavy objects with a hook or other lifting devices and performs cyclic operations such as lifting and moving in space. There are many classifications of cranes, and the common names such as "crane", "tower crane", "gantry crane", "bridge crane" etc. refer to one or several types of cranes.

[0003] However, in the prior art, the distance between two groups of hooks is adjusted by a double-axis screw rod to meet the use requirements in multiple different situations. However, during use, under the influence of the gravity pull of the suspended object, the hook will act on the double-axis screw rod through the nut, thereby damaging the external thread of the screw rod. In the light case, the thread is damaged and cannot effectively adjust the positions of the nut and the hook. In the severe case, the double-axis screw rod is pulled and bent, affecting the safety of the normal lifting work of the equipment.

[0004] As disclosed in a hoisting device of a crane in Chinese Patent CN220033752U, the displacement amplitude of the convex block and the rectangular frame can be limited by a C-shaped plate, and the rectangular frame will also drive the roller group to slide in the chute for its movement. At the same time, when the rectangular frame drives the hook to displace to a specified position, by rotating the bolt, the bolt is driven to slide into the corresponding mounting hole and contact the touch rod. At this time, the display lamp component is lit to remind that the bolt is installed in place, so as to prevent the rectangular frame from driving the hook to displace left and right on the balance beam by fixing the mounting hole with the bolt. When the hook suspends a heavy object, the gravity is applied to the balance beam through the rectangular frame. Since there is a gap between the inner wall of the screw tube and the through hole, the rectangular frame will not apply the gravity to the thread of the positive and negative screw rod through the convex block, thereby improving its safety. The diameter of the bolt rod body and the touch switch are both smaller than the inner diameter of the mounting hole, so that the rectangular frame will not pull the bolt rod body and the inner wall of the mounting hole to cause severe friction and damage the thread of the rod body.

[0005] However, in the prior art, during the use of the hoisting device, since a cable is usually used for lifting, during the use of the cable, safety problems such as the reverse rotation of the winding wheel due to the overweight of the goods and the resulting dropping of the goods are likely to occur.

[0006] Therefore, we urgently need to provide a hoisting device of a crane. Content of the Utility Model

[0007] The purpose of the present utility model is to provide a crane lifting device to solve the problem that the lifting device used in the prior art proposed in the above background technology is usually used to lift the goods by using a cable. During the use of the cable, the reel is easily reversed due to the heavy weight of the goods, thereby causing the goods to fall and other safety problems.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crane lifting device, comprising a lifting seat, an adjustment structure installed in the middle of the bottom surface of the lifting seat, a clamping structure connected to the middle of the bottom surface of the lifting seat, and a limiting structure installed at the bottom of the adjustment structure.

[0009] The clamping structure includes a fixing plate, a hydraulic cylinder is installed near the bottom end in the middle of the left and right sides of the fixing plate, a limiting wheel is installed at the output end of the hydraulic cylinder, and a ratchet is provided on the side of the limiting wheel away from the hydraulic cylinder.

[0010] Preferably, the top of the fixing plate is fixedly connected to the middle of the bottom surface of the lifting seat, the limiting wheel is provided with a slot near the ratchet, the size of the slot is adapted to the ratchet, the shape of the slot is adapted to the shape and size of the ratchet, and the ratchet is connected to the rotating shaft.

[0011] Preferably, the adjustment structure includes an adjustment unit and a lifting unit.

[0012] The adjustment unit includes an asynchronous motor, the output end of the asynchronous motor is connected to a transmission member, bearings are installed on the left and right ends of the outer surface of the transmission member, the middle part of the outer surface of the transmission member is connected to a slider, and a connecting plate is installed on the bottom surface of the slider.

[0013] Preferably, the lifting unit includes a winding motor, the output end of the winding motor is connected to a rotating shaft, the middle part of the outer surface of the rotating shaft is connected to a winding wheel, and a hook is provided at the bottom of the winding wheel.

[0014] Preferably, the winding motor is detachably connected to the connecting plate, the outer surface of the rotating shaft is rotatably connected to the middle portion of the bottom end of the connecting plate, the winding wheel is connected to a hook via a cable, the asynchronous motor is detachably connected to the right side of the lifting seat, the outer surface of the bearing is internally connected to the mounting holes provided in the middle of the left and right sides of the lifting seat, and the outer surface of the slider and the connecting plate are internally slidably connected to the groove provided in the middle of the bottom surface of the lifting seat. The transmission member comprises a threaded rod and a threaded barrel, and the outer surface of the threaded rod has opposite threads provided on the left and right ends.

[0015] Preferably, the limiting structure includes a support plate, a positioning plate is installed on one side of the two support plates close to each other, a connecting block is installed on the top and bottom ends of the two positioning plates close to each other, and a limiting ring is fixedly installed in the middle of the connecting block.

[0016] Preferably, the top surface of the support plate is fixedly connected to the bottom end of the connecting plate, and the interior of the limiting ring is slidably connected to the outer surface of the reel and the hook connecting cable. The limiting ring can limit the position of the cable to a certain extent, thereby stabilizing it during the lifting process and reducing the shaking of the cable due to the inertia of the heavy object.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The crane lifting device, through the setting of the clamping structure, starts the hydraulic cylinder to drive the limiting wheel and the ratchet to clamp when lifting the goods, thereby limiting the rotating shaft and the winding wheel. At the same time, the installation of the limiting ring can limit the cable to a certain extent, thereby effectively reducing the shaking of the cable during the lifting process.

[0019] 2. The crane hoisting device starts the asynchronous motor to drive the transmission parts through the setting of the adjustment structure, so that the distance between the two sets of sliders and the connecting plates can be effectively adjusted, thereby adjusting the distance between the two hooks to facilitate the lifting of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 3 This is an enlarged view of the winding and clamping structure of the present utility model;

[0023] Figure 4 It is an enlarged view of the limiting structure of the utility model.

[0024] In the figure: 1. Lifting seat; 101. Asynchronous motor; 102. Transmission member; 103. Bearing; 104. Slider; 105. Connecting plate; 106. Winding motor; 107. Rotating shaft; 108. Winding wheel; 109. Hook; 201. Fixing plate; 202. Hydraulic cylinder; 203. Limiting wheel; 204. Ratchet; 301. Support plate; 302. Positioning plate; 303. Connecting block; 304. Limiting ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1-4 , the utility model provides a technical solution:

[0027] Example 1:

[0028] A crane lifting device comprises a lifting seat 1, an adjusting structure is installed in the middle of the bottom surface of the lifting seat 1, a clamping structure is connected to the middle of the bottom surface of the lifting seat 1, and a limiting structure is installed at the bottom of the adjusting structure.

[0029] The clamping structure includes a fixed plate 201. Hydraulic cylinders 202 are installed near the bottom of the left and right sides of the fixed plate 201. The output end of the hydraulic cylinder 202 is installed with a limit wheel 203. A ratchet 204 is provided on the side of the limit wheel 203 away from the hydraulic cylinder 202. The top of the fixed plate 201 is fixedly connected to the middle of the bottom surface of the lifting base 1. The side of the limit wheel 203 near the ratchet 204 has a clamping slot, the size of which is adapted to the ratchet 204.

[0030] The limiting structure includes support plates 301. Positioning plates 302 are mounted on the side of the two support plates 301 that are adjacent to each other. Connecting blocks 303 are mounted on the top and bottom ends of the two positioning plates 302 that are adjacent to each other. A limiting ring 304 is fixedly mounted in the middle of the connecting block 303. The top surface of the support plates 301 is fixedly connected to the bottom end of the connecting plate 105. The interior of the limiting ring 304 is in sliding connection with the outer surface of the cable connected to the reel 108 and the hook 109.

[0031] By setting up the clamping structure, when lifting the goods, the hydraulic cylinder 202 is started to drive the limiting wheel 203 to clamp with the ratchet 204, thereby limiting the rotating shaft 107 and the winding wheel 108. At the same time, by installing the limiting ring 304, the cable can be limited to a certain extent, thereby effectively reducing the shaking of the cable during the lifting process.

[0032] Before lifting the goods, the hydraulic cylinder 202 is started to extend, thereby driving the limiting wheel 203 to engage with the ratchet 204, and the ratchet 204 is engaged with the inner part of the slot of the limiting wheel 203 to limit the rotating shaft 107, thereby preventing reversal during the lifting of the goods, thereby preventing the goods from falling. At the same time, during the lifting of the goods, the two limiting rings 304 on the same side of the cable limit a section of the cable, which can effectively reduce the swing of the cable during the lifting process and increase the stability during the lifting process.

[0033] Example 2:

[0034] Based on the first embodiment, the adjustment structure includes an adjustment unit and a lifting unit. The adjustment unit includes an asynchronous motor 101. The output end of the asynchronous motor 101 is connected to a transmission member 102. Bearings 103 are mounted on the left and right ends of the outer surface of the transmission member 102. A slider 104 is connected to the middle of the outer surface of the transmission member 102. A connecting plate 105 is mounted on the bottom surface of the slider 104. The lifting unit includes a winding motor 106. The output end of the winding motor 106 is connected to a rotating shaft 107. A winding wheel 108 is connected to the middle of the outer surface of the rotating shaft 107. A hook 109 is provided at the bottom of the winding wheel 108.

[0035] The winding motor 106 is detachably connected to the connecting plate 105, the outer surface of the rotating shaft 107 is rotatably connected to the middle part of the bottom end of the connecting plate 105, the winding wheel 108 is connected to the hook 109 through a cable, the asynchronous motor 101 is detachably connected to the right side of the lifting seat 1, the outer surface of the bearing 103 is internally connected to the mounting holes opened in the middle of the left and right sides of the lifting seat 1, and the outer surface of the slider 104 and the connecting plate 105 are internally slidably connected to the slide groove opened in the middle of the bottom surface of the lifting seat 1.

[0036] By setting the adjustment structure, the asynchronous motor 101 is started to drive the transmission member 102 to transmit, so that the distance between the two sets of sliders 104 and the connecting plate 105 can be effectively adjusted, thereby adjusting the distance between the two hooks 109 to facilitate lifting of goods.

[0037] When lifting the goods, the hook 109 is connected to the goods. During the connection process, the transmission member 102 is driven by starting the asynchronous motor 101, and the output end of the asynchronous motor 101 drives the bidirectional threaded rod to rotate. The bidirectional threaded rod is connected to the threaded barrel to adjust the distance between the two sets of sliders 104 and the connecting plate 105, thereby driving the two hooks 109 to adjust the distance, which is convenient for connecting and lifting the goods. During the lifting process, the rotating shaft 107 is driven to rotate by starting the winding motor 106, thereby driving the winding wheel 108 to rotate by the rotating shaft 107, thereby lifting the hook 109 and the goods through the cable.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A crane hoisting device, comprising a lifting seat (1), characterized in that: An adjustment structure is installed in the middle of the bottom surface of the lifting seat (1), a clamping structure is connected to the middle of the bottom surface of the lifting seat (1), and a limiting structure is installed at the bottom of the adjustment structure; The clamping structure comprises a fixing plate (201), a hydraulic cylinder (202) is installed near the bottom end in the middle of the left and right sides of the fixing plate (201), a limiting wheel (203) is installed at the output end of the hydraulic cylinder (202), and a ratchet wheel (204) is arranged on the side of the limiting wheel (203) away from the hydraulic cylinder (202).

2. A crane hoisting device according to claim 1, characterized in that: The top end of the fixing plate (201) is fixedly connected to the middle of the bottom surface of the lifting seat (1), and a slot is provided on a side of the limiting wheel (203) close to the ratchet (204), and the size of the slot is adapted to the ratchet (204).

3. A crane hoisting device according to claim 1, characterized in that: The regulating structure comprises an regulating unit and a lifting unit; The adjustment unit comprises an asynchronous motor (101), the output end of the asynchronous motor (101) is connected to a transmission member (102), bearings (103) are installed at left and right ends of the outer surface of the transmission member (102), a slider (104) is connected to the middle of the outer surface of the transmission member (102), and a connecting plate (105) is installed on the bottom surface of the slider (104).

4. A crane hoisting device according to claim 3, characterized in that: The lifting unit comprises a winding motor (106), the output end of the winding motor (106) is connected to a rotating shaft (107), the middle part of the outer surface of the rotating shaft (107) is connected to a winding wheel (108), and a hook (109) is arranged at the bottom of the winding wheel (108).

5. A crane hoisting device according to claim 4, characterized in that: The winding motor (106) is detachably connected to the connecting plate (105), the outer surface of the rotating shaft (107) is rotatably connected to the middle of the bottom end of the connecting plate (105), the winding wheel (108) is connected to the hook (109) via a cable, the asynchronous motor (101) is detachably connected to the right side of the lifting seat (1), the outer surface of the bearing (103) is internally connected to the mounting holes provided in the middle of the left and right sides of the lifting seat (1), and the outer surfaces of the slider (104) and the connecting plate (105) are internally slidably connected to the sliding groove provided in the middle of the bottom surface of the lifting seat (1).

6. A crane hoisting device according to claim 1, characterized in that: The limiting structure comprises a support plate (301), a positioning plate (302) is installed on one side of the two support plates (301) close to each other, a connecting block (303) is installed on the top and bottom ends of one side of the two positioning plates (302) close to each other, and a limiting ring (304) is fixedly installed in the middle of the connecting block (303).

7. A crane hoisting device according to claim 6, characterized in that: The top surface of the support plate (301) is fixedly connected to the bottom end of the connecting plate (105), and the interior of the limiting ring (304) is slidably connected to the outer surface of the cable connected to the winding wheel (108) and the hook (109).

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