Hoisting mechanism for container portal crane

Abstract

The utility model relates to the technical field of crane equipment, in particular to a hoisting mechanism for a container portal crane, which comprises a main beam, a track and a trolley, the track is arranged on the main beam, the trolley is arranged on the track, a main hoisting mechanism body is arranged on the trolley, and the main hoisting mechanism body comprises a main hoisting mechanism, a reciprocating mechanism and a cleaning and lubricating mechanism. The main hoisting mechanism is arranged at one end of the trolley, the reciprocating mechanism is arranged on the main hoisting mechanism, and the cleaning and lubricating mechanism is arranged on the reciprocating mechanism. The distance between the main lifting mechanism body and the auxiliary lifting mechanism body is adjusted, the auxiliary lifting mechanism body provides auxiliary lifting for the main lifting mechanism body, the lifting range is expanded, the gear motor drives the winding drum and the reciprocating lead screw to rotate, orderly winding and unwinding of a steel wire rope are achieved, the steel wire rope is prevented from being wound at one position, and the working efficiency is improved. And the cleaning and lubricating mechanism lubricates, maintains and cleans the steel wire rope, so that the service life of the steel wire rope is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of crane equipment, in particular to a lifting mechanism for a container gantry crane. Background Art

[0002] Container gantry crane is a special gantry crane used for loading, unloading, handling and stacking containers at container terminals, railway freight stations, storage yards, etc. It lifts containers by wire ropes to move containers.

[0003] The position of the lifting mechanism of the prior art is relatively unchanged on the trolley. For example, a lifting mechanism for a container gantry crane disclosed in a Chinese utility model patent (patent publication number: CN214989809U) drives the sliding mounting plate to move left and right, thereby driving the hook A and the hook B to slide, thereby expanding the lifting range. However, in this technical solution, the hook A and the hook B are both installed on the sliding mounting plate, and the distance between the two is relatively unchanged. However, since there are many specifications of containers and their sizes are different, the hook A and the hook B have different extension distances when lifting containers of different specifications. The additional forces of the hook A and the hook B on the sliding mounting plate are different. When lifting an oversized and overweight container, the hook A and the hook B extend longer, affecting the service life and operation safety of the sliding mounting plate.

[0004] In addition, due to the relatively harsh operating environment of container gantry cranes, the wire ropes are exposed and easily adhered to dirt. In addition, due to the disorderly stacking of the wire ropes, the wire ropes are entangled with each other, wear and corroded, posing a safety hazard.

[0005] Therefore, it is necessary to propose a lifting mechanism for a container gantry crane to overcome the defects of the prior art. Utility Model Content

[0006] The utility model aims to solve the problems in the prior art and provides a lifting mechanism for a container gantry crane.

[0007] The technical solution of the utility model is:

[0008] A lifting mechanism for a container gantry crane comprises a main beam, a track and a trolley, wherein the track is arranged on the main beam, the trolley is movable on the track, a main lifting mechanism body is arranged on the trolley, the main lifting mechanism body comprises a main hoisting mechanism, a reciprocating mechanism and a cleaning and lubricating mechanism, the main hoisting mechanism is arranged at one end of the trolley, the reciprocating mechanism is arranged on the main hoisting mechanism, and the cleaning and lubricating mechanism is arranged on the reciprocating mechanism.

[0009] Preferably, the main hoisting mechanism includes a drum, which is connected to the trolley through a vertical plate, a reduction motor is provided on one side of the vertical plate, the reduction motor is transmission-connected to the drum, and a gearbox is provided on the other side of the vertical plate, the input end of the gearbox is transmission-connected to the drum.

[0010] Preferably, the reciprocating mechanism includes a reciprocating screw, a guide rod and a moving seat. The reciprocating screw is rotatably arranged between two vertical plates, the reciprocating screw is transmission connected to the output end of the gearbox, the guide rod is arranged parallel to the reciprocating screw, the moving seat is penetrated and arranged on the reciprocating screw and the guide rod, and the moving seat is transmission connected to the reciprocating screw.

[0011] Preferably, the cleaning and lubrication mechanism includes a connecting seat and two cleaning seats, the connecting seat is arranged on the movable seat, the two cleaning seats are symmetrically arranged on the connecting seat, the cleaning seat includes a lubrication section and a cleaning section which are integrally arranged up and down, the lubrication section is arranged as an internal hollow structure, an oil filling port is arranged on the top of the lubrication section, the lubrication section is arranged with a first concave surface, a plurality of oil outlet holes are evenly distributed on the first concave surface, the cleaning section is arranged with a second concave surface, and bristles are evenly distributed on the second concave surface.

[0012] Preferably, symmetrically distributed guide grooves are provided at both ends of the first concave surface, a cover plate is slidably provided in the guide groove, a stopper is provided at the top end of the guide groove, and limit blocks are provided at both sides of the bottom end of the cover plate.

[0013] Preferably, two guide rods are provided on the cleaning seat, the guide rods penetrate the side plates of the connecting seat and are connected to the cleaning seat, a spring is sleeved on the guide rods, one end of the spring abuts against the connecting seat, and the other end of the spring abuts against the cleaning seat.

[0014] Preferably, the trolley is also provided with a secondary lifting mechanism body and a moving mechanism. The moving mechanism is arranged on the trolley, and the secondary lifting mechanism body is arranged on the moving mechanism. The secondary lifting mechanism body has the same structure as the main lifting mechanism body. The moving mechanism includes a moving guide rail, a power screw, a power motor and a moving plate. The two moving guide rails are symmetrically arranged on the trolley, the power motor and the power screw are both arranged on the trolley and are transmission connected to each other, and the moving plate is arranged on the moving guide rail, and the moving plate is transmission connected to the power screw.

[0015] Preferably, a rack is provided on the track, a drive motor is provided on the trolley, a drive gear is fixedly provided at the output end of the drive motor, and the drive gear is meshed with the rack.

[0016] Preferably, two guide shafts are rotatably arranged between the two vertical plates, and the two guide shafts are respectively arranged on both sides of the cleaning and lubricating mechanism.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Through the main lifting mechanism body, the moving mechanism and the auxiliary lifting mechanism body on the moving mechanism, the moving mechanism drives the auxiliary lifting mechanism body to move, adjusts the distance between the main lifting mechanism body and the auxiliary lifting mechanism body, and the auxiliary lifting mechanism body provides auxiliary lifting for the main lifting mechanism body, thereby expanding the applicable scope of lifting and meeting the lifting needs of oversized and overweight containers;

[0019] 2. The reduction motor drives the drum to realize the retraction and release of the wire rope. The drum drives the reciprocating screw to rotate through the gearbox. The reciprocating screw drives the moving seat and the cleaning and lubrication mechanism installed on the moving seat to move back and forth, so as to realize the orderly retraction and release of the wire rope on the drum, avoid the wire rope being entangled in one place, and cause wear and slippage, so as to ensure the safety of lifting;

[0020] 3. The two cleaning seats of the cleaning and lubrication mechanism clamp the wire rope, and the bristles of the cleaning section clean the surface of the wire rope when the wire rope rises. The cover is opened and closed by the friction between the wire rope and the cover. When the cover is opened, lubricating oil or grease seeps out through the oil outlet and is smeared on the surface of the wire rope, thereby lubricating and maintaining the wire rope and extending the service life of the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model (hiding the main beam and guide rail);

[0023] Figure 3 It is a partial enlarged structural schematic diagram of A of the utility model;

[0024] Figure 4 The cleaning seat structure of the utility model is shown in FIG. Figure 1 ;

[0025] Figure 5 The cleaning seat structure of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 6 This is a schematic diagram of the cover structure of the utility model.

[0027] Among them, 1. main beam; 2. track; 3. trolley; 4. reel; 5. vertical plate; 6. reduction motor; 7. gearbox; 8. reciprocating screw; 9. guide rod; 10. moving seat; 11. connecting seat; 12. cleaning seat; 121. lubrication section; 122. cleaning section; 123. oil filling port; 124. first concave surface; 125. oil outlet hole; 126. second concave surface; 127. bristles; 128. guide groove; 129. block; 13. cover plate; 131. limit block; 14. guide rod; 15. spring; 16. moving guide rail; 17. power screw; 18. power motor; 19. moving plate; 20. rack; 21. drive motor; 22. drive gear; 23. guide shaft. DETAILED DESCRIPTION

[0028] In order to make the technical means, technical features, utility model objectives and technical effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific illustrations.

[0029] Embodiment 1

[0030] like Figure 1 As shown, a lifting mechanism for a container gantry crane includes a main beam 1, a track 2, a trolley 3 and a main lifting mechanism body. Two tracks 2 are installed on the main beam 1 in parallel with each other. The trolley 3 is installed between the two tracks 2 and can reciprocate along the tracks 2. The main lifting mechanism body is installed on the trolley 3 and changes its position as the trolley 3 moves, thereby realizing the lifting and movement of the container.

[0031] like Figure 1-Figure 6 As shown, the main lifting mechanism body includes a main hoisting mechanism, a reciprocating mechanism and a cleaning and lubricating mechanism. The main hoisting mechanism is installed at one end of the trolley 3. The main hoisting mechanism includes a drum 4. The drum 4 is connected to the trolley 3 through two vertical plates 5. The drum 4 can rotate relative to the vertical plates 5. The wire rope is wound around the drum 4. The wire rope is retracted and released by the rotation of the drum 4. The rotation of the drum 4 is driven by a reduction motor 6. The reduction motor 6 is installed on the outside of one of the vertical plates 5. The output shaft of the reduction motor 6 is transmission-connected to one end of the drum 4. A gearbox 7 is installed on the outside of the other vertical plate 5. The input end of the gearbox 7 is transmission-connected to the other end of the drum 4.

[0032] The reciprocating mechanism is connected to the main hoisting mechanism. Specifically, the reciprocating mechanism includes a reciprocating lead screw 8, a guide rod 9, and a moving seat 10. The reciprocating lead screw 8 is rotatably connected between two vertical plates 5. One end of the reciprocating lead screw 8 is drivingly connected to the output end of the gearbox 7. The reduction motor 6 drives the drum 4 to rotate. Through the power transmission of the gearbox 7, the reciprocating lead screw 8 is synchronously driven to rotate. The gearbox 7 is an application of the prior art, and its structure and working principle will not be elaborated here. The guide rod 9 is installed between the two vertical plates 5. The guide rod 9 is parallel to the reciprocating lead screw 8. The moving seat 10 is penetrated and connected to the reciprocating lead screw 8 and the guide rod 9. The moving seat 10 is drivingly connected to the reciprocating lead screw 8. By the rotation of the reciprocating lead screw 8, the moving seat 10 is driven to move. Since the reciprocating lead screw 8 is adopted, the axial reciprocating motion of the moving seat 10 can be realized without changing the rotation direction. The guide rod 9 guides and prevents rotation for the reciprocating motion of the moving seat 10;

[0033] The cleaning and lubricating mechanism is installed on the reciprocating mechanism. Specifically, the cleaning and lubricating mechanism includes a connecting seat 11 and two cleaning seats 12. The connecting seat 11 is connected to the moving seat 10. The connecting seat 11 is processed into a "冂"-shaped structure. The two cleaning seats 12 are respectively installed on both sides of the connecting seat 11. The cleaning seat 12 is connected to the connecting seat 11 through a guide rod 14. The guide rod 14 penetrates the side wall of the connecting seat 11 and is threadedly connected to the cleaning seat 12. At least two guide rods 14 are connected to each cleaning seat 12 to support the cleaning seat 12 and enable the cleaning seat 12 to slide relative to the connecting seat 11. A spring 15 is sleeved on the guide rod 14. One end of the spring 15 abuts against the connecting seat 11, and the other end of the spring 15 abuts against the cleaning seat 12. The two cleaning seats 12 approach each other under the action of the spring 15, and the wire rope is clamped between the two cleaning seats 12. The cleaning seat 12 includes a lubricating section 121 and a cleaning section 122. The lubricating section 121 and the cleaning section 122 are integrally distributed up and down. The inside of the lubricating section 121 is processed into a hollow structure for containing lubricating oil or grease. An oil filling port 123 is processed at the top of the lubricating section 121. Lubricating oil or grease is injected into the inside of the lubricating section 121 through the oil filling port 123. A first concave surface 124 is processed on the lubricating section 121. A number of uniformly distributed oil outlet holes 125 are processed on the first concave surface 124. Symmetrically distributed guide grooves 128 are processed at both ends of the first concave surface 124. A cover plate 13 is slidably installed in the guide grooves 128. The cover plate 13 is processed according to the shape of the first concave surface 124. A stop block 129 is processed at the top end of the guide groove 128. Limiting blocks 131 are processed on both sides of the bottom end of the cover plate 13. The limiting blocks 131 are slidably installed in the guide grooves 128, and the upward sliding position of the cover plate 13 is limited by the blocking of the stop block 129 against the limiting blocks 131. A second concave surface 126 is processed on the cleaning section 122. Uniformly distributed brush hairs 127 are arranged on the second concave surface 126 for cleaning the wire rope.

[0034] As Figure 1As shown, in order to drive the trolley 3 to move on the track 2, a rack 20 is installed on the inner side of one of the tracks 2, a driving motor 21 is installed on the trolley 3, and a driving gear 22 is fixedly installed on the output shaft of the driving motor 21. The driving gear 22 is meshed with the rack 20. The driving motor 21 drives the driving gear 22 to rotate, and through the meshing with the rack 20, the trolley 3 is driven to move along the track 2. The driving motor 21 switches forward and reverse to realize the reciprocating movement of the trolley 3, thereby driving the main lifting mechanism to lift the container.

[0035] like Figure 1 and Figure 2 As shown, two guide shafts 23 are connected between the two vertical plates 5. The guide shafts 23 can rotate relative to the vertical plates 5. The two guide shafts 23 are distributed on the upper and lower sides of the cleaning and lubrication mechanism and are used to support and limit the wire rope to ensure that the wire rope can pass between the two cleaning seats 12.

[0036] When in use, the wire rope passes around the guide shaft 23 and passes between the two cleaning seats 12. The cleaning seat 12 is pressed against the wire rope under the action of the spring 15. The first concave surface 124 and the second concave surface 126 of the two opposite cleaning seats 12 are in contact with the wire rope. When the reduction motor 6 drives the reel 4 to rotate and reel the wire rope upward, the brush 127 first cleans the surface of the wire rope to remove the dirt adhering to the surface of the wire rope. The wire rope moves upward, and the friction between the wire rope and the cover plate 13 drives the limit block 131 of the cover plate 13 to slide upward along the guide groove 128, thereby releasing the cover plate 13 from blocking the oil outlet 125, and the lubricating oil or The grease seeps out through the oil outlet 125 and is smeared on the wire rope to lubricate the surface of the wire rope. The drum 4 further drives the reciprocating screw 8 to rotate through the gearbox 7. The reciprocating screw 8 drives the moving seat 10 to move back and forth along the guide rod 9. During the movement, the wire rope is driven to be wound around the drum 4 in an orderly manner to prevent the wire rope from being entangled in a disorderly manner on the drum 4 and causing wear. When the wire rope is unwound, the cover plate 13 will seal the oil outlet 125 under the friction of the wire rope to prevent the seepage of lubricating oil or grease. The bristles 127 will further evenly spread the grease that has been stained on the wire rope, thereby improving the safety of the wire rope and ensuring stable and reliable lifting of the container.

[0037] Embodiment 2

[0038] like Figure 1 and Figure 2As shown, a secondary lifting mechanism body and a moving mechanism are also provided on the trolley 3. The secondary lifting mechanism body is used to assist the main lifting mechanism body to expand the weight range of the container lifting. The moving mechanism is installed on the trolley 3, opposite to the main lifting mechanism body. The secondary lifting mechanism body is connected to the moving mechanism and is driven by the moving mechanism to move, so that the secondary lifting mechanism body can be close to or away from the main lifting mechanism body, which can meet the lifting of containers of different sizes. The secondary lifting mechanism body adopts the same structure as the main lifting mechanism body, and its specific structure is not repeated here.

[0039] The moving mechanism includes a moving guide rail 16, a power screw 17, a power motor 18 and a moving plate 19. There are two moving guide rails 16, and the two moving guide rails 16 are symmetrically installed on the trolley 3. The power motor 18 and the power screw 17 are both installed on the trolley 3. The power motor 18 is transmission-connected to the power screw 17. The moving plate 19 is connected to the two moving guide rails 16. The auxiliary lifting mechanism body is installed on the moving plate 19. The moving plate 19 is transmission-connected to the power screw 17. The power motor 18 drives the power screw 17 to rotate, thereby driving the moving plate 19 to move along the moving guide rail 16. The moving guide rail 16 adopts but is not limited to the dovetail groove form, has good stability and large bearing capacity. In order to ensure the balanced driving of the moving plate 19, the power screw 17 and the power motor 18 can be configured as two sets, which are respectively installed on the outside of the two moving guide rails 16 and connected to the two ends of the moving plate 19.

[0040] When in use, in order to lift the oversized and overweight container, the power motor 18 is started, and the power motor 18 drives the movable plate 19 and the auxiliary lifting mechanism body installed on the movable plate 19 to move relative to the main lifting mechanism body through the power screw 17. After moving into place, the main lifting mechanism body and the auxiliary lifting mechanism body simultaneously lift the container, which ensures the stability of the lifting and expands the scope of application.

[0041] The above description is only a preferred embodiment of the utility model, and is not intended to limit the scope of implementation of the utility model. That is, all equivalent changes and modifications made according to the content of the patent application scope of the utility model should belong to the technical scope of the utility model.

Claims

1. A lifting mechanism for a container gantry crane, comprising a main beam (1), a track (2) and a trolley (3), wherein the track (2) is arranged on the main beam (1), and the trolley (3) is movably arranged on the track (2), characterized in that: A main lifting mechanism body is arranged on the trolley (3), the main lifting mechanism body comprising a main hoisting mechanism, a reciprocating mechanism and a cleaning and lubricating mechanism, the main hoisting mechanism is arranged at one end of the trolley (3), the reciprocating mechanism is arranged on the main hoisting mechanism, and the cleaning and lubricating mechanism is arranged on the reciprocating mechanism.

2. The lifting mechanism for a container gantry crane according to claim 1, characterized in that: The main hoisting mechanism comprises a drum (4), the drum (4) being connected to the trolley (3) via a vertical plate (5), a reduction motor (6) being arranged on one side of the vertical plate (5), the reduction motor (6) being transmission-connected to the drum (4), and a gearbox (7) being arranged on the other side of the vertical plate (5), the input end of the gearbox (7) being transmission-connected to the drum (4).

3. The lifting mechanism for a container gantry crane according to claim 2, characterized in that: The reciprocating mechanism comprises a reciprocating screw (8), a guide rod (9) and a moving seat (10); the reciprocating screw (8) is rotatably arranged between the two vertical plates (5); the reciprocating screw (8) is transmission-connected to the output end of the gearbox (7); the guide rod (9) is arranged parallel to the reciprocating screw (8); the moving seat (10) is penetrated and arranged on the reciprocating screw (8) and the guide rod (9); and the moving seat (10) is transmission-connected to the reciprocating screw (8).

4. The lifting mechanism for a container gantry crane according to claim 3, characterized in that: The cleaning and lubricating mechanism comprises a connecting seat (11) and two cleaning seats (12); the connecting seat (11) is arranged on a movable seat (10); the two cleaning seats (12) are symmetrically arranged on the connecting seat (11); the cleaning seat (12) comprises a lubricating section (121) and a cleaning section (122) which are integrally arranged on top and bottom; the lubricating section (121) is arranged as an internally hollow structure; an oil filling port (123) is arranged at the top of the lubricating section (121); the lubricating section (121) is provided with a first concave surface (124); a plurality of oil outlet holes (125) are evenly distributed on the first concave surface (124); the cleaning section (122) is provided with a second concave surface (126); bristles (127) are evenly distributed on the second concave surface (126).

5. The lifting mechanism for a container gantry crane according to claim 4, characterized in that: The first concave surface (124) is provided with symmetrically distributed guide grooves (128) at both ends, a cover plate (13) is slidably arranged in the guide groove (128), a stopper (129) is arranged at the top end of the guide groove (128), and limit blocks (131) are arranged on both sides of the bottom end of the cover plate (13).

6. The lifting mechanism for a container gantry crane according to claim 4 or 5, characterized in that: The cleaning seat (12) is provided with two guide rods (14), the guide rods (14) penetrate the side plates of the connecting seat (11) and are connected to the cleaning seat (12), a spring (15) is sleeved on the guide rods (14), one end of the spring (15) abuts against the connecting seat (11), and the other end of the spring (15) abuts against the cleaning seat (12).

7. The lifting mechanism for a container gantry crane according to claim 1, characterized in that: The trolley (3) is also provided with an auxiliary lifting mechanism body and a moving mechanism. The moving mechanism is arranged on the trolley (3), and the auxiliary lifting mechanism body is arranged on the moving mechanism. The auxiliary lifting mechanism body has the same structure as the main lifting mechanism body. The moving mechanism comprises a moving guide rail (16), a power screw (17), a power motor (18) and a moving plate (19). The two moving guide rails (16) are symmetrically arranged on the trolley (3). The power motor (18) and the power screw (17) are both arranged on the trolley (3) and are in transmission connection with each other. The moving plate (19) is arranged on the moving guide rail (16), and the moving plate (19) is in transmission connection with the power screw (17).

8. The lifting mechanism for a container gantry crane according to claim 1, characterized in that: A rack (20) is provided on the track (2), a drive motor (21) is provided on the trolley (3), a drive gear (22) is fixedly provided at the output end of the drive motor (21), and the drive gear (22) is meshed with the rack (20).

9. The lifting mechanism for a container gantry crane according to claim 2, characterized in that: Two guide shafts (23) are rotatably arranged between the two vertical plates (5), and the two guide shafts (23) are respectively arranged on both sides of the cleaning and lubricating mechanism.

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