Hoisting device of portal crane

Abstract

The utility model provides a gantry crane hoisting device which comprises a winding structure, the winding structure comprises a winding wheel, the winding wheel is rotatably connected between a group of side plates, the outer wall of the winding wheel is provided with a wire slot, the two ends of the winding wheel are provided with limiting plates, the outer wall of the limiting plate on one side of the winding wheel is provided with a brake disc, and the brake disc is connected with the winding wheel. A worm wheel body is arranged on the outer wall of the limiting plate on the other side of the winding wheel, and a transmission gear is arranged on one side of the worm wheel body. The lifting device is reasonable in design, the four winding structures are arranged at the top of the loading plate, and the rotating directions of the winding structures on the two sides are opposite, so that the winding wheels can drive the ropes to wind and unwind, the ropes can drive the lifting hook to ascend and descend, and the four ropes can fix the four corners of the lifting hook, so that the lifting hook is convenient to lift. The stability of the lifting hook in the lifting process is kept, and the situation that when the lifting hook lifts or moves an object, the object shakes greatly is avoided.

Description

Technical Field

[0001] The utility model mainly relates to the field of gantry cranes, and in particular to a lifting device for a gantry crane. Background Art

[0002] Gantry crane is a variation of bridge crane. In ports, it is mainly used for loading and unloading operations of outdoor cargo yards, material yards, and bulk cargo. Its metal structure is like a door-shaped frame, with two legs installed under the load-bearing main beam, which can walk directly on the track on the ground. Both ends of the main beam can have outward cantilever beams. Gantry cranes have the characteristics of high site utilization, large operating range, wide adaptability, and strong versatility, and are widely used in port cargo yards;

[0003] The lifting device of the gantry crane is internally provided with ropes connected with hooks. The lifting device drives the ropes to be retracted and released to realize the lifting and lowering of the hanging, so that the gantry crane can lift and lower objects.

[0004] The inventor discovered the following defects during the operation of the specific embodiment:

[0005] However, when a single rope is connected to a hook, a rope with a larger diameter is needed to support the hook to lift the object, and the single rope has poor stability, which causes the hook to shake easily when lifting the object, causing the lifted object to shake.

[0006] It should be noted that the above contents belong to the technical cognition scope of the inventor. Since the technical contents in this field are vast and too complicated, the above contents of this application do not necessarily constitute prior art. Utility Model Content

[0007] 1. Technical problems to be solved by the utility model:

[0008] The utility model provides a gantry crane lifting device, which is used to solve the technical problems existing in the above-mentioned background technology.

[0009] 2. Technical solution:

[0010] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a gantry crane lifting device, comprising a load plate, eight side plates are arranged on the top of the load plate, two of the side plates form a group, a winding structure is rotatably connected between the side plates of a group, a worm body is rotatably connected to the inner side of the side plate, a brake limit structure is arranged in the middle of the load plate, and a guide structure is arranged on the top of the load plate;

[0011] The winding structure includes a winding wheel, which is rotatably connected between a group of side plates, a wire groove is opened on the outer wall of the winding wheel, and limit plates are arranged at both ends of the winding wheel. A brake disc is arranged on the outer wall of the limit plate on one side of the winding wheel, and a worm gear body is arranged on the outer wall of the limit plate on the other side of the winding wheel, and a transmission gear is arranged on one side of the worm gear body.

[0012] Furthermore, the brake limiting structure includes a hydraulic telescopic rod, which is arranged in the middle of the bottom of the load plate. A push rod is arranged at the output end of the hydraulic telescopic rod. The push rod is slidably connected to the pipe through hole in the middle of the load plate. A cross bar is arranged on the top of the push rod, and brake pads are arranged on both sides of the cross bar.

[0013] Furthermore, the brake pad is configured to be in the shape of a half arc, and the inner wall of the brake pad is in contact with the outer wall of the brake disc.

[0014] Furthermore, the number of the winding structures is set to be multiple, and the multiple winding structures are symmetrically distributed on both sides of the horizontal center line of the load plate.

[0015] Furthermore, the guide structure includes a sliding rod and a movable frame, the sliding rod is arranged at the top of the side plate, and the number of the sliding rods is set to two, a transmission screw is arranged between the two sliding rods, the transmission screw is rotatably connected to the side plate, and a synchronous pulley body is arranged on one side of the transmission screw.

[0016] Furthermore, the movable frame is arranged on the outer wall of the sliding rod and the transmission screw, and brackets are arranged at both ends of the movable frame, a sliding block is arranged at one end of the bracket, a fitting groove is opened on one side of the sliding block, the fitting groove is slidably connected to the load-bearing plate, an installation groove is opened in the middle of the fitting groove, and guide wheels are rotatably connected to both sides of the inner wall of the installation groove.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0019] The utility model has four winding structures arranged on the top of the load plate, and the winding structures on both sides rotate in opposite directions, so that the winding wheel can drive the rope to be wound and released, and the rope can drive the hook to be lifted and lowered. The four ropes can be fixed to the four corners of the hook to maintain the stability of the hook during the lifting process, and avoid the object from shaking with a large amplitude when the hook is lifting or moving the object.

[0020] When the winding structure needs to be kept still, the hydraulic telescopic rod is started to drive the push rod to move downward, and the push rod drives the brake pad to fit the outer wall of the brake disc to stop the winding structure and keep the winding structure still;

[0021] When the rope is reeled in and released through the reeling structure, the reeling structure rotates and drives the synchronous pulley to rotate through the pulley and the transmission belt, the synchronous pulley drives the transmission screw to rotate, the transmission screw drives the slider to slide, and the rope is arranged between the two guide wheels in the slider to guide the rope in the reeling structure to prevent the ropes from being entangled with each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 This is a schematic diagram of the load-bearing plate structure of the utility model;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the winding structure of the utility model;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the brake limiting structure of the utility model.

[0026] Reference numerals:

[0027] 1. Load plate; 2. Side plate; 3. Worm body; 4. Winding structure; 401. Winding wheel; 402. Wire groove; 403. Limit plate; 404. Brake disc; 405. Worm body; 406. Transmission gear; 5. Brake limit structure; 501. Hydraulic telescopic rod; 502. Push rod; 503. Cross bar; 504. Brake pad; 6. Sliding rod; 7. Transmission screw; 8. Synchronous pulley body; 9. Moving frame; 10. Bracket; 11. Sliding block; 12. Fitting groove; 13. Mounting groove; 14. Guide wheel. DETAILED DESCRIPTION

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", "provided on" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0032] See attached Figure 1-4 A gantry crane lifting device comprises a load plate 1, eight side plates 2 are arranged on the top of the load plate 1, two side plates 2 form a group, a winding structure 4 is rotatably connected between the side plates 2 in one group, a worm body 3 is rotatably connected to the inner side of the side plate 2, a brake limit structure 5 is arranged in the middle of the load plate 1, and a guide structure is arranged on the top of the load plate 1;

[0033] The winding structure 4 includes a winding wheel 401, which is rotatably connected between a group of the side plates 2. A wire groove 402 is provided on the outer wall of the winding wheel 401. Limiting plates 403 are provided at both ends of the winding wheel 401. A brake disc 404 is provided on the outer wall of the limiting plate 403 on one side of the winding wheel 401. A worm gear body 405 is provided on the outer wall of the limiting plate 403 on the other side of the winding wheel 401. A transmission gear 406 is provided on one side of the worm gear body 405.

[0034] Furthermore, the brake limiting structure 5 includes a hydraulic telescopic rod 501, which is arranged in the middle of the bottom of the load-bearing plate 1, and a push rod 502 is arranged at the output end of the hydraulic telescopic rod 501. The push rod 502 is slidably connected to the pipe through-hole in the middle of the load-bearing plate 1, and a cross bar 503 is arranged on the top of the push rod 502. Brake pads 504 are arranged on both sides of the cross bar 503, and the brake pads 504 are arranged in a half-circular arc shape. The inner wall of the brake pad 504 fits with the outer wall of the brake disc 404. When the winding structure 4 needs to be braked, the hydraulic telescopic rod 501 is started, and the hydraulic telescopic rod 501 drives the push rod 502 to move downward, and the push rod 502 drives the brake pad 504 to fit with the brake disc 404 to brake the winding wheel 401, thereby keeping the hook stable.

[0035] Furthermore, the number of the winding structures 4 is set to be multiple, and the multiple winding structures 4 are symmetrically distributed on both sides of the horizontal center line of the load plate 1.

[0036] Furthermore, the guide structure includes a slide rod 6 and a movable frame 9. The slide rod 6 is arranged on the top of the side plate 2, and the number of the slide rods 6 is set to two. A transmission screw 7 is arranged between the two slide rods 6. The transmission screw 7 is rotatably connected to the side plate 2. A synchronous pulley body 8 is arranged on one side of the transmission screw 7. When the winding wheel 401 rotates, one winding wheel 401 drives the synchronous pulley to rotate, and the synchronous pulley drives the synchronous pulley body 8 to rotate through the synchronous belt. The synchronous pulley body 8 drives the transmission screw 7 to rotate, so that the transmission screw 7 drives the movable frame 9 to move. The number of movable frames 9 is set to two, and the thread rotation directions of the two ends of the transmission screw 7 are opposite. At the same time, the two ends of the transmission screw 7 can also be bidirectional screws, so that the movable frame 9 drives the rope to move, so that the rope can be evenly wound around the outer wall of the winding wheel 401.

[0037] Furthermore, the movable frame 9 is arranged on the outer wall of the slide rod 6 and the transmission screw 7, and brackets 10 are arranged at both ends of the movable frame 9, and a slider 11 is arranged at one end of the bracket 10, and a fitting groove 12 is opened on one side of the slider 11, and the fitting groove 12 is slidably connected to the load plate 1, and an installation groove 13 is opened in the middle of the fitting groove 12, and guide wheels 14 are rotatably connected on both sides of the inner wall of the installation groove 13, and the rope passes through the inside of the two guide wheels 14 to guide the rope, so as to avoid the rope being damaged by direct friction inside the installation groove 13.

[0038] In this embodiment, when it is necessary to lift an object by means of the lifting device in the gantry crane, the motor is started, and the motor drives the worm body 3 to rotate, and the worm body 3 drives the winding wheel 401 to rotate through the worm gear body 405, and at the same time, the winding wheel 401 drives the transmission gear 406 to rotate, so that the transmission gear 406 drives the winding wheel 401 on the other side of the load plate 1 to rotate, and the rotation of the two winding wheels 401 is opposite, and then the winding wheel 401 drives the rope to release from the outer wall of the winding wheel 401 and move the hook downward, and at the same time, during the rotation of the winding wheel 401, the synchronous pulley is driven to rotate, and the synchronous pulley drives the synchronous pulley body 8 to rotate through the synchronous belt, and the synchronous pulley body 8 drives the transmission screw 7 to rotate, so that the transmission screw 7 drives the moving frame 9 to move, and the moving frame 9 drives the slider 11 to slide on the outer wall of the load plate 1, and the slider 11 drives the rope to move, so as to prevent the rope from being entangled on the outer wall of the winding wheel 401;

[0039] When the winding structure 4 needs to be braked, the hydraulic telescopic rod 501 is started, and the hydraulic telescopic rod 501 drives the push rod 502 to descend. The push rod 502 drives the brake pad 504 to fit the top outer wall of the brake disc 404 through the cross bar 503, thereby braking the winding wheel 401 and maintaining the height of the hook.

[0040] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A gantry crane lifting device, characterized in that: include A load-bearing plate (1), wherein eight side plates (2) are provided on the top of the load-bearing plate (1), two of the side plates (2) form a group, a winding structure (4) is rotatably connected between the side plates (2) in one group, a worm body (3) is rotatably connected to the inner side of the side plates (2), a brake limit structure (5) is provided in the middle of the load-bearing plate (1), and a guide structure is provided on the top of the load-bearing plate (1); The winding structure (4) comprises a winding wheel (401), wherein the winding wheel (401) is rotatably connected between a group of the side plates (2), a wire groove (402) is provided on the outer wall of the winding wheel (401), and limiting plates (403) are provided at both ends of the winding wheel (401), a brake disc (404) is provided on the outer wall of the limiting plate (403) on one side of the winding wheel (401), and a worm gear body (405) is provided on the outer wall of the limiting plate (403) on the other side of the winding wheel (401), and a transmission gear (406) is provided on one side of the worm gear body (405).

2. A gantry crane lifting device according to claim 1, characterized in that: The brake limiting structure (5) includes a hydraulic telescopic rod (501), which is arranged in the middle of the bottom of the load plate (1), and a push rod (502) is provided at the output end of the hydraulic telescopic rod (501), and the push rod (502) is slidably connected to the pipe through-hole in the middle of the load plate (1), and a cross bar (503) is provided at the top of the push rod (502), and brake pads (504) are provided on both sides of the cross bar (503).

3. A gantry crane lifting device according to claim 2, characterized in that: The brake pad (504) is configured to be in the shape of a half-circle arc, and the inner wall of the brake pad (504) is in contact with the outer wall of the brake disc (404).

4. A gantry crane lifting device according to claim 1, characterized in that: The number of the winding structures (4) is set to be multiple, and the multiple winding structures (4) are symmetrically distributed on both sides of the horizontal center line of the load plate (1).

5. The gantry crane lifting device according to claim 1, characterized in that: The guide structure comprises a slide rod (6) and a movable frame (9), wherein the slide rod (6) is arranged at the top of the side plate (2), and the number of the slide rods (6) is set to two, a transmission screw rod (7) is arranged between the two slide rods (6), the transmission screw rod (7) is rotatably connected to the side plate (2), and a synchronous pulley body (8) is arranged on one side of the transmission screw rod (7).

6. A gantry crane lifting device according to claim 5, characterized in that: The movable frame (9) is arranged on the outer wall of the slide rod (6) and the transmission screw (7), and brackets (10) are arranged at both ends of the movable frame (9), and a slider (11) is arranged at one end of the bracket (10), and a fitting groove (12) is provided on one side of the slider (11), and the fitting groove (12) is slidably connected to the load plate (1), and a mounting groove (13) is provided in the middle of the fitting groove (12), and guide wheels (14) are rotatably connected to both sides of the inner wall of the mounting groove (13).

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