A new type of lightweight gantry crane
By using threaded rods and gears to drive the moving block in the new lightweight gantry crane, combined with the rolling friction of fixed pulleys and balls, the friction problem of traditional devices during movement is solved, improving service life and lifting stability, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG PROVINCE TIANYUANHEAVY CRANE MASCH CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-26
AI Technical Summary
When traditional lightweight gantry cranes move after lifting heavy objects, the friction at the connection between the wheels and the motor, as well as the sliding friction between the motor support plate and the track, can damage the device and affect its service life.
The moving block is driven by the meshing of the first threaded rod and the second gear. The rolling friction between the fixed pulley and the ball is converted into rolling friction. The rope is wound and unwound by the third motor, so as to achieve uniform arrangement and fine adjustment of the rope and reduce friction.
It increases the service life of the device, reduces damage caused by friction, improves lifting stability and the stability of moving heavy objects, and reduces maintenance costs.
Smart Images
Figure CN224279560U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crane technology, and more specifically, to a novel lightweight gantry crane. Background Technology
[0002] The new lightweight gantry crane boasts wide adaptability and strong versatility. Its compact structure and light weight allow for flexible application in various scenarios, such as ports, docks, construction sites, and warehouses. Furthermore, the crane's main beam typically features cantilever beams at both ends, further expanding the working range and meeting diverse operational needs.
[0003] However, in traditional lightweight gantry cranes, after lifting heavy objects, ropes or chains are often used for lifting. After lifting, the object needs to be moved to a certain position. However, when the moving distance is short, the motor on the crossbeam drives the wheels to rotate, and the wheels move along the track. However, the connection between the wheel and the motor bears the downward pressure of the heavy object, which causes the wheel to have a large friction. In addition, there is sliding friction between the motor support plate and the track, which can cause damage to the device. Therefore, it is necessary to improve and optimize a new type of lightweight gantry crane. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a new type of lightweight gantry crane, which has the advantage of converting sliding friction into rolling friction and enhancing the service life of the device.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel lightweight gantry crane, comprising a crossbeam, a first threaded rod rotatably connected inside the crossbeam, a movable block threadedly connected to the surface of the first threaded rod, a fixed pulley fixedly installed at the rear end of the crossbeam, a driving structure provided on the upper surface of the crossbeam, a slide rail fixedly installed on the upper surface of the crossbeam, the fixed pulley being movably connected inside the slide rail, a support member fixedly connected to the front surface of the movable block, a lifting structure provided on the upper surface of the support member, a rope fixedly connected to the surface of the lifting structure, a hook fixedly connected to the lower part of the rope, and an auxiliary structure provided on the upper surface of the crossbeam.
[0006] As a preferred technical solution of this utility model: a first motor is fixedly installed on the lower surface of the support member, a second threaded rod is fixedly connected to the output shaft of the first motor, a limit strip is fixedly connected to the lower surface of the support member, a pull ring is threadedly connected to the surface of the second threaded rod, the inside of the pull ring is movably connected to the surface of the limit strip, and the rope is movably connected to the inside of the pull ring.
[0007] As a preferred technical solution of this utility model: the driving structure includes a second motor fixedly connected to the upper surface of the crossbeam, the output shaft of the second motor is fixedly connected to a first gear, the left end of the first threaded rod is fixedly connected to a second gear, and the second gear and the first gear mesh with each other.
[0008] As a preferred technical solution of this utility model: the lifting structure includes a third motor fixedly installed on the upper surface of the support, the output shaft of the third motor is fixedly connected to a rope take-up roller, the interior of the rope take-up roller is fixedly connected to the upper end of the rope, and the surface of the rope take-up roller is rotatably connected to the interior of the support.
[0009] As a preferred technical solution of this utility model: the auxiliary structure includes an installation strip fixedly connected to the upper surface of the crossbeam, the surface of the installation strip is movably connected to the interior of the moving block, the interior of the installation strip is fixedly installed with balls, and the upper part of some of the balls is in contact with the lower surface of the moving block.
[0010] As a preferred technical solution of this utility model: a control module is fixedly connected to the upper surface of the support, the control module is electrically connected to the third motor, the control module is electrically connected to the first motor, and a limit plate is fixedly connected to the lower surface of the support.
[0011] As a preferred technical solution of this utility model: a tripod is fixedly connected to the lower part of the crossbeam, a support frame is fixedly connected to the surface of the tripod, and a caster wheel is fixedly installed on the lower part of the support frame.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model starts the second motor, and the rotation of the output shaft of the second motor drives the rotation of the first gear. As the first gear and the second gear mesh with each other, the first threaded rod rotates inside the crossbeam, which in turn drives the moving block to move left and right. However, since the fixed pulley and the ball bearings share the weight of the heavy object lifted at the bottom of the moving block, this device uses the first threaded rod to drive the movement, the cooperation between the fixed pulley and the slide rail, and the rotation of the ball bearings inside the mounting strip, thereby converting sliding friction into rolling friction and enhancing the service life of the device.
[0014] 2. This utility model uses the starting of a third motor to drive the lifting structure to lift heavy objects. However, since the third motor starts synchronously with the first motor, and the output shaft of the first motor periodically rotates forward and backward, the pull ring moves back and forth under the limiting action of the limiting strip. This allows the rope inside the pull ring to be evenly arranged on the surface of the rope take-up roller. This device uses the continuous line of the second threaded rod and the left and right movement of the pull ring to achieve fine adjustment of the rope, so that the rope will not accumulate, thus ensuring the stability of the lifted heavy objects. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the beam of this utility model;
[0017] Figure 3 This is a schematic diagram of the movable block structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the rope take-up roller structure of this utility model;
[0019] Figure 5 This is a schematic diagram of the pull ring structure of this utility model;
[0020] Figure 6 This is a schematic diagram of the support frame structure of this utility model.
[0021] In the diagram: 1. Crossbeam; 2. First threaded rod; 3. Moving block; 4. Fixed pulley; 5. Slide rail; 6. Support piece; 7. Rope; 8. First motor; 9. Second threaded rod; 10. Limiting strip; 11. Pull ring; 12. Second motor; 13. First gear; 14. Second gear; 15. Third motor; 16. Rope take-up roller; 17. Mounting strip; 18. Ball bearing; 19. Control module; 20. Limiting plate; 21. Triangular frame; 22. Caster wheel; 23. Hook; 24. Support frame. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] like Figures 1 to 6As shown, this utility model provides a novel lightweight gantry crane, including a crossbeam 1, a first threaded rod 2 rotatably connected inside the crossbeam 1, a moving block 3 threadedly connected to the surface of the first threaded rod 2, a fixed pulley 4 fixedly installed at the rear end of the crossbeam 1, a driving structure provided on the upper surface of the crossbeam 1, a slide rail 5 fixedly installed on the upper surface of the crossbeam 1, the fixed pulley 4 being movably connected inside the slide rail 5, a support 6 fixedly connected to the front surface of the moving block 3, a lifting structure provided on the upper surface of the support 6, a rope 7 fixedly connected to the surface of the lifting structure, a hook 23 fixedly connected to the lower part of the rope 7, and an auxiliary structure provided on the upper surface of the crossbeam 1.
[0024] When workers need to lift heavy objects, they hook the hook 23 onto the object and start the lifting mechanism. When the position of the object needs to be moved, the support frame 24 can be pushed or the second motor 12 can be started. The rotation of the output shaft of the second motor 12 drives the rotation of the first gear 13. Since the first gear 13 and the second gear 14 mesh with each other, the first threaded rod 2 rotates inside the crossbeam 1, which in turn causes the moving block 3, which is threaded to the surface of the first threaded rod 2, to move left and right. As the moving block 3 moves left and right, the fixed pulley 4 rolls along the upper part of the slide 5. At the same time, the ball 18 contacts the lower part of the moving block 3, thereby causing the ball 18 to rotate.
[0025] The lower surface of the support member 6 is fixedly mounted with a first motor 8, the output shaft of the first motor 8 is fixedly connected to a second threaded rod 9, the lower surface of the support member 6 is fixedly connected to a limit strip 10, the surface of the second threaded rod 9 is threadedly connected to a pull ring 11, the inside of the pull ring 11 is movably connected to the surface of the limit strip 10, and the rope 7 is movably connected to the inside of the pull ring 11.
[0026] When workers lift heavy objects, the third motor 15 is started. The rotation of the output shaft of the third motor 15 drives the rotation of the take-up roller 16, which in turn causes the rope 7 to be wound up on the surface of the take-up roller 16. At this time, the first motor 8 starts synchronously with the third motor 15. The rotation of the output shaft of the first motor 8 drives the rotation of the second threaded rod 9. The second threaded rod 9 is threadedly connected to the pull ring 11. The pull ring 11 moves left and right under the limiting action of the limiting strip 10, which causes the rope to be finely adjusted in the left and right position.
[0027] The drive structure includes a second motor 12 fixedly connected to the upper surface of the crossbeam 1. The output shaft of the second motor 12 is fixedly connected to a first gear 13. The left end of the first threaded rod 2 is fixedly connected to a second gear 14. The second gear 14 and the first gear 13 mesh with each other.
[0028] The rotation of the output shaft of the second motor 12 drives the rotation of the first gear 13. However, the meshing between the first gear 13 and the second gear 14 causes the first threaded rod 2 to rotate inside the crossbeam 1.
[0029] The lifting structure includes a third motor 15 fixedly installed on the upper surface of the support 6. The output shaft of the third motor 15 is fixedly connected to a rope take-up roller 16. The inside of the rope take-up roller 16 is fixedly connected to the upper end of the rope 7, and the surface of the rope take-up roller 16 is rotatably connected to the inside of the support 6.
[0030] The rotation of the output shaft of the third motor 15 drives the rope take-up roller 16 to rotate inside the support 6, thereby realizing the retraction and release of the rope 7, and thus realizing the lifting of the heavy object.
[0031] The auxiliary structure includes a mounting strip 17 fixedly connected to the upper surface of the crossbeam 1. The surface of the mounting strip 17 is movably connected to the interior of the movable block 3. The interior of the mounting strip 17 is fixedly mounted with balls 18, and the upper part of some balls 18 contacts the lower surface of the movable block 3.
[0032] The mounting strip 17 provides a position for the installation of the ball bearing 18; however, since the ball bearing 18 contacts the lower surface of the moving block 3, friction is reduced. This increases the service life of the device and reduces maintenance costs.
[0033] Among them, the upper surface of the support 6 is fixedly connected to the control module 19, the control module 19 is electrically connected to the third motor 15, the control module 19 is electrically connected to the first motor 8, and the lower surface of the support 6 is fixedly connected to the limit plate 20.
[0034] The control module 19 connects the third motor 15 and the first motor 8, so that while the winding roller 16 rotates, the pull ring 11 can also move left and right. However, due to the design of the limiting plate 20, the pull ring 11 is prevented from detaching from the surface of the limiting strip 10, thus limiting the pull ring 11.
[0035] Among them, a tripod 21 is fixedly connected to the lower part of the crossbeam 1, a support frame 24 is fixedly connected to the surface of the tripod 21, and a caster wheel 22 is fixedly installed on the lower part of the support frame 24.
[0036] The tripod 21 provides support to the beam 1, and the tripod 21 is triangular. Triangles have high stability. The support frame 24 makes the lifting of heavy objects more stable. The casters 22 allow the lifted heavy objects to be moved.
[0037] Working principle and usage process of this utility model:
[0038] When workers need to lift heavy objects, they hook the hook 23 onto the object and start the lifting mechanism. When the position of the object needs to be moved, the support frame 24 can be pushed or the second motor 12 can be started. The rotation of the output shaft of the second motor 12 drives the rotation of the first gear 13. Since the first gear 13 and the second gear 14 mesh with each other, the first threaded rod 2 rotates inside the crossbeam 1, which in turn causes the moving block 3, which is threaded to the surface of the first threaded rod 2, to move left and right. As the moving block 3 moves left and right, the fixed pulley 4 rolls along the upper part of the slide 5. At the same time, the ball 18 contacts the lower part of the moving block 3, thereby causing the ball 18 to rotate.
[0039] When workers lift heavy objects, the third motor 15 is started. The rotation of the output shaft of the third motor 15 drives the rotation of the take-up roller 16, which in turn causes the rope 7 to be wound up on the surface of the take-up roller 16. At this time, the first motor 8 starts synchronously with the third motor 15. The rotation of the output shaft of the first motor 8 drives the rotation of the second threaded rod 9. The second threaded rod 9 is threadedly connected to the pull ring 11. The pull ring 11 moves left and right under the limiting action of the limiting strip 10, which causes the rope to be finely adjusted in the left and right position.
[0040] The rotation of the output shaft of the second motor 12 drives the rotation of the first gear 13. However, the meshing between the first gear 13 and the second gear 14 causes the first threaded rod 2 to rotate inside the crossbeam 1.
[0041] The rotation of the output shaft of the third motor 15 drives the rope take-up roller 16 to rotate inside the support 6, thereby realizing the retraction and release of the rope 7, and thus realizing the lifting of the heavy object.
[0042] The mounting strip 17 provides a position for the installation of the ball bearing 18; however, since the ball bearing 18 contacts the lower surface of the moving block 3, friction is reduced. This increases the service life of the device and reduces maintenance costs.
[0043] The control module 19 connects the third motor 15 and the first motor 8, so that while the winding roller 16 rotates, the pull ring 11 can also move left and right. However, due to the design of the limiting plate 20, the pull ring 11 is prevented from detaching from the surface of the limiting strip 10, thus limiting the pull ring 11.
[0044] The tripod 21 provides support to the beam 1, and the tripod 21 is triangular. Triangles have high stability. The support frame 24 makes the lifting of heavy objects more stable. The casters 22 allow the lifted heavy objects to be moved.
[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A novel lightweight gantry crane, comprising a crossbeam (1), characterized in that: The crossbeam (1) is internally rotatably connected to a first threaded rod (2), and the surface of the first threaded rod (2) is threadedly connected to a moving block (3). A fixed pulley (4) is fixedly installed at the rear end of the crossbeam (1). A driving structure is provided on the upper surface of the crossbeam (1). A slide rail (5) is fixedly installed on the upper surface of the crossbeam (1). The fixed pulley (4) is movably connected inside the slide rail (5). A support member (6) is fixedly connected to the front surface of the moving block (3). A lifting structure is provided on the upper surface of the support member (6). A rope (7) is fixedly connected to the surface of the lifting structure. A hook (23) is fixedly connected to the lower part of the rope (7). An auxiliary structure is provided on the upper surface of the crossbeam (1).
2. The novel lightweight gantry crane according to claim 1, characterized in that: A first motor (8) is fixedly installed on the lower surface of the support (6). The output shaft of the first motor (8) is fixedly connected to a second threaded rod (9). A limit strip (10) is fixedly connected to the lower surface of the support (6). A pull ring (11) is threadedly connected to the surface of the second threaded rod (9). The inside of the pull ring (11) is movably connected to the surface of the limit strip (10). The rope (7) is movably connected to the inside of the pull ring (11).
3. A novel lightweight gantry crane according to claim 1, characterized in that: The drive structure includes a second motor (12) fixedly connected to the upper surface of the crossbeam (1), the output shaft of the second motor (12) is fixedly connected to a first gear (13), the left end of the first threaded rod (2) is fixedly connected to a second gear (14), and the second gear (14) meshes with the first gear (13).
4. A novel lightweight gantry crane according to claim 1, characterized in that: The lifting structure includes a third motor (15) fixedly installed on the upper surface of the support (6). The output shaft of the third motor (15) is fixedly connected to a rope take-up roller (16). The interior of the rope take-up roller (16) is fixedly connected to the upper end of the rope (7). The surface of the rope take-up roller (16) is rotatably connected to the interior of the support (6).
5. A novel lightweight gantry crane according to claim 1, characterized in that: The auxiliary structure includes a mounting strip (17) fixedly connected to the upper surface of the crossbeam (1). The surface of the mounting strip (17) is movably connected to the interior of the movable block (3). The interior of the mounting strip (17) is fixedly mounted with a ball (18). The upper part of a portion of the ball (18) is in contact with the lower surface of the movable block (3).
6. A novel lightweight gantry crane according to claim 1, characterized in that: A control module (19) is fixedly connected to the upper surface of the support (6). The control module (19) is electrically connected to the third motor (15) and the first motor (8). A limit plate (20) is fixedly connected to the lower surface of the support (6).
7. A novel lightweight gantry crane according to claim 1, characterized in that: A tripod (21) is fixedly connected to the lower part of the crossbeam (1), a support frame (24) is fixedly connected to the surface of the tripod (21), and a caster wheel (22) is fixedly installed on the lower part of the support frame (24).