A buffer device for a gantry crane

Abstract

The utility model discloses a kind of buffer devices for portal crane, it is related to buffer device technical field, comprising: fixed block is set in the fixed frame, with fixed frame sliding connection;Supporting plate has two, and two supporting plates are symmetrically set in the two sides of the supporting block, for the swing of lifting hook is buffered;By setting buffer mechanism and fixed block, the lifting impact of lifting hook is effectively buffered, avoid lifting hook when rising and portal crane main body produce violent impact, to reduce equipment damage risk, prolong service life;By setting extrusion mechanism and supporting plate, the swing of lifting hook is buffered, inhibit swing amplitude, improve the operation stability of portal crane main body.

Description

Technical Field

[0001] This utility model relates to the field of buffer device technology, and in particular to a buffer device for gantry cranes. Background Technology

[0002] Gantry cranes are widely used lifting equipment in industrial production, commonly found in ports, warehouses, and construction sites, used for lifting heavy goods. During gantry crane operation, the hook is a key component responsible for bearing and lifting heavy objects, but its lifting and swinging can easily generate impact and sway, which not only affects the accuracy of operation, but may also lead to equipment structural fatigue, shorten service life, or even cause safety accidents.

[0003] Existing gantry crane buffer devices mostly adopt traditional structures, such as simple springs or hydraulic dampers, which are directly installed between the hook and the gantry crane body. For example, some common designs use fixed buffer blocks or basic elastic elements to mitigate impact, but these devices have obvious shortcomings. During the lifting and lowering of the hook, the hook will swing and sway, causing the hook to sway too much when subjected to external forces or inertia, affecting the positioning accuracy of the load, and even causing chain vibrations, reducing the overall operating efficiency. Therefore, improvements are needed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a buffer device for gantry cranes, which aims to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A buffer device for a gantry crane includes a gantry crane body and a hook, the hook being disposed on the gantry crane body; it also includes:

[0007] A support block is provided on the hook and is fixedly connected to the hook;

[0008] A fixed frame is mounted on the support block and is fixedly connected to the support block.

[0009] A fixing block is disposed within the fixing frame and is slidably connected to the fixing frame;

[0010] The support plate has two plates, which are symmetrically arranged on both sides of the support block to buffer the swing of the hook;

[0011] An extrusion mechanism is provided inside the support block to fix and buffer the hook;

[0012] A buffer mechanism, located within the fixed frame, is used to buffer the impact of lifting and lowering the hook.

[0013] Preferably, the extrusion mechanism includes:

[0014] An extrusion groove is formed within the support block;

[0015] An extrusion plate is disposed within the extrusion groove and is fixedly connected to the support block;

[0016] An extrusion rod is disposed on the extrusion plate, slidably connected to the extrusion plate, and fixedly connected to the support plate;

[0017] A sliding component is disposed within the support block.

[0018] Preferably, the sliding component includes:

[0019] A sliding groove is formed within the support block;

[0020] A sliding block is disposed within the sliding groove and is slidably connected to the sliding groove;

[0021] A sliding plate is disposed in the extrusion groove, slidably connected to the extrusion groove, fixedly connected to the sliding block, and also fixedly connected to the extrusion rod;

[0022] An elastic component is disposed within the extrusion groove.

[0023] Preferably, the elastic component includes:

[0024] An elastic spring, one end of which is fixedly connected to the sliding plate, and the other end of which is fixedly connected to the compression plate;

[0025] An elastic damper is disposed on the sliding plate and fixedly connected to the sliding plate.

[0026] Preferably, the buffer mechanism includes:

[0027] The first buffer frame is disposed on the fixed block and is fixedly connected to the fixed block;

[0028] The second buffer frame is disposed within the fixed frame and is fixedly connected to the fixed frame;

[0029] A buffer spring, one end of which is fixedly connected to the first buffer frame and the other end of which is fixedly connected to the second buffer frame;

[0030] A rotating component is mounted on the first buffer frame.

[0031] Preferably, the rotating component includes:

[0032] The first rotating shaft has two shafts, and the two first rotating shafts are symmetrically arranged on the first buffer frame and fixedly connected to the first buffer frame.

[0033] The first rotating plate is rotatably connected to the first rotating shaft;

[0034] The second rotating shaft is disposed on the first rotating plate and is rotatably connected to the first rotating plate;

[0035] There are two third rotating shafts, and the two third rotating shafts are symmetrically arranged on the second buffer frame and fixedly connected to the second buffer frame;

[0036] The second rotating plate has one end rotatably connected to the second rotating shaft and the other end rotatably connected to the third rotating shaft;

[0037] A connecting component is disposed on the second rotating shaft.

[0038] Preferably, the connecting component includes:

[0039] A connecting frame is disposed on the second rotating shaft and is fixedly connected to the second rotating shaft;

[0040] A connecting spring is fixedly connected at one end to the connecting frame and at the other end to the fixing frame.

[0041] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0042] By setting up a buffer mechanism and fixing blocks, the impact of the lifting and lowering of the hook is effectively buffered, avoiding a violent collision between the hook and the main body of the gantry crane when the hook rises, thereby reducing the risk of equipment damage and extending its service life; by setting up a squeezing mechanism and support plate, the swinging and swaying of the hook is buffered, the amplitude of the swaying is suppressed, and the operational stability of the main body of the gantry crane is improved. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A three-dimensional structural schematic diagram of a buffer device for a gantry crane is shown.

[0045] Figure 2 A three-dimensional cross-sectional structural diagram of a buffer device for a gantry crane is shown.

[0046] Figure 3 An exploded perspective view of a buffer device for a gantry crane is shown.

[0047] Figure 4 An exploded view of the compression mechanism of a buffer device for a gantry crane is shown.

[0048] Figure 5 An exploded view of the buffer mechanism of a buffer device for a gantry crane is shown.

[0049] Figure 6 It shows Figure 2 Enlarged view of point A in the middle.

[0050] Legend:

[0051] 1. Gantry crane body; 2. Hook; 3. Support block; 4. Fixing frame; 5. Fixing block; 6. Support plate; 7. Extrusion groove; 8. Extrusion plate; 9. Extrusion rod; 10. Sliding groove; 11. Sliding block; 12. Sliding plate; 13. Spring; 14. Spring damper; 15. First buffer frame; 16. Second buffer frame; 17. Buffer spring; 18. First rotating shaft; 19. First rotating plate; 20. Second rotating shaft; 21. Third rotating shaft; 22. Second rotating plate; 23. Connecting frame; 24. Connecting spring. Detailed Implementation

[0052] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0053] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0056] Reference Figures 1 to 6 The present invention provides a further description of an embodiment of a buffer device for a gantry crane.

[0057] A buffer device for a gantry crane includes a gantry crane body 1 and a hook 2, the hook 2 being mounted on the gantry crane body 1; it also includes: a support block 3, mounted on the hook 2 and fixedly connected to the hook 2; a fixing frame 4, mounted on the support block 3 and fixedly connected to the support block 3; a fixing block 5, mounted inside the fixing frame 4 and slidably connected to the fixing frame 4; two support plates 6, symmetrically arranged on both sides of the support block 3, for buffering the swing of the hook 2; a pressing mechanism, mounted inside the support block 3, for fixing and buffering the hook 2; and a buffering mechanism, mounted inside the fixing frame 4, for buffering the impact of the lifting and lowering of the hook 2.

[0058] Reference Figure 4 and Figure 6 In a preferred embodiment, the extrusion mechanism includes: an extrusion groove 7, formed within the support block 3; an extrusion plate 8, disposed within the extrusion groove 7 and fixedly connected to the support block 3; an extrusion rod 9, disposed on the extrusion plate 8, slidably connected to the extrusion plate 8, and fixedly connected to the support plate 6; and a sliding component, disposed within the support block 3.

[0059] When the hook 2 swings during operation, it will cause the support plate 6 to move closer to the top two ends of the gantry crane body 1, causing the compression rod 9, which is fixedly connected to the support plate 6, to slide outwards towards the compression plate 8.

[0060] Reference Figure 4 and Figure 6 In a preferred embodiment, the sliding component includes: a sliding groove 10, formed within the support block 3; a sliding block 11, disposed within the sliding groove 10 and slidably connected to the sliding groove 10; a sliding plate 12, disposed within the extrusion groove 7, slidably connected to the extrusion groove 7, and fixedly connected to the sliding block 11 and the extrusion rod 9; a spring 13, one end fixedly connected to the sliding plate 12 and the other end fixedly connected to the extrusion plate 8; and a spring damper 14, disposed on the sliding plate 12 and fixedly connected to the sliding plate 12.

[0061] During operation, the sliding plate 12, which is fixedly connected to the extrusion rod 9, slides in the extrusion groove 7, causing the sliding block 11, which is fixedly connected to the sliding plate 12, to slide in the sliding groove 10. This causes the elastic spring 13, which is fixedly connected to the sliding plate 12, to be compressed, generating elastic potential energy. This causes the elastic damper 14, which is fixedly connected to the sliding plate 12, to contact the extrusion plate 8, thus buffering the support plate 6.

[0062] Reference Figure 5 In a preferred embodiment, the buffer mechanism includes: a first buffer frame 15, which is disposed on the fixed block 5 and fixedly connected to the fixed block 5; a second buffer frame 16, which is disposed inside the fixed frame 4 and fixedly connected to the fixed frame 4; a buffer spring 17, one end of which is fixedly connected to the first buffer frame 15 and the other end of which is fixedly connected to the second buffer frame 16; and a rotating component disposed on the first buffer frame 15.

[0063] During operation, the fixed block 5 slides into the fixed frame 4, causing the first buffer frame 15, which is fixedly connected to the fixed block 5, to move closer to the second buffer frame 16, thereby compressing the buffer spring 17, which is fixedly connected to the first buffer frame 15 and the second buffer frame 16, and generating elastic potential energy.

[0064] Reference Figure 5 In a preferred embodiment, the rotating component includes: two first rotating shafts 18, symmetrically arranged on a first buffer frame 15 and fixedly connected to the first buffer frame 15; a first rotating plate 19, rotatably connected to the first rotating shafts 18; a second rotating shaft 20, arranged on the first rotating plate 19 and rotatably connected to the first rotating plate 19; two third rotating shafts 21, symmetrically arranged on a second buffer frame 16 and fixedly connected to the second buffer frame 16; a second rotating plate 22, one end of which is rotatably connected to the second rotating shaft 20 and the other end of which is rotatably connected to the third rotating shaft 21; a connecting frame 23, arranged on the second rotating shaft 20 and fixedly connected to the second rotating shaft 20; and a connecting spring 24, one end of which is fixedly connected to the connecting frame 23 and the other end of which is fixedly connected to the fixed frame 4.

[0065] During operation, the first rotating plate 19, which is rotatably connected to the first rotating shaft 18, rotates, causing the second rotating plate 22, which is rotatably connected to the second rotating shaft 20, to rotate around the axis of the third rotating shaft 21. This causes the connecting frame 23, which is fixedly connected to the second rotating shaft 20, to move closer to the inner wall of the fixed frame 4, thereby compressing the connecting spring 24 and generating elastic potential energy.

[0066] Working principle: When the hook 2 contacts the top of the gantry crane body 1, the fixing block 5 contacts and adheres to the gantry crane body 1, causing the fixing block 5 to slide into the fixing frame 4. This causes the first buffer frame 15, which is fixedly connected to the fixing block 5, to move closer to the second buffer frame 16. This causes the buffer spring 17, which is fixedly connected to the first buffer frame 15 and the second buffer frame 16, to be compressed, generating elastic potential energy. This causes the first rotating plate 19, which is rotatably connected to the first rotating shaft 18, to rotate. This causes the second rotating plate 22, which is rotatably connected to the second rotating shaft 20, to rotate around the axis of the third rotating shaft 21. This causes the connecting frame 23, which is fixedly connected to the second rotating shaft 20, to move closer to the inner wall of the fixing frame 4. This causes the connecting spring 24 to be compressed, generating elastic potential energy. This buffers the impact generated when the hook 2 rises, preventing impact damage to the gantry crane body 1.

[0067] Then, when the hook 2 swings, it will cause the support plate 6 to move closer to the top two ends of the gantry crane body 1, causing the compression rod 9, which is fixedly connected to the support plate 6, to slide outwards towards the compression plate 8. This causes the sliding plate 12, which is fixedly connected to the compression rod 9, to slide within the compression groove 7, and the sliding block 11, which is fixedly connected to the sliding plate 12, to slide within the sliding groove 10. This causes the elastic spring 13, which is fixedly connected to the sliding plate 12, to be compressed, generating elastic potential energy. This causes the elastic damper 14, which is fixedly connected to the sliding plate 12, to contact the compression plate 8, thus buffering the support plate 6. This buffers the swaying of the hook 2, preventing the swaying amplitude of the hook 2 from being too large and affecting the stability of the gantry crane body 1.

[0068] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A buffer device for a gantry crane, comprising a gantry crane body (1) and a hook (2), the hook (2) being disposed on the gantry crane body (1); characterized in that, Also includes: A support block (3) is provided on the hook (2) and is fixedly connected to the hook (2); A fixed frame (4) is set on the support block (3) and fixedly connected to the support block (3); A fixing block (5) is set inside the fixing frame (4) and is slidably connected to the fixing frame (4); There are two support plates (6), and the two support plates (6) are symmetrically arranged on both sides of the support block (3) to buffer the swing of the hook (2); The extrusion mechanism is located inside the support block (3) and is used to fix and buffer the hook (2); A buffer mechanism is provided inside the fixed frame (4) to buffer the lifting impact of the hook (2).

2. A buffer device for a gantry crane according to claim 1, characterized in that, The extrusion mechanism includes: An extrusion groove (7) is formed inside the support block (3); An extrusion plate (8) is disposed in the extrusion groove (7) and is fixedly connected to the support block (3); The extrusion rod (9) is disposed on the extrusion plate (8), is slidably connected to the extrusion plate (8), and is fixedly connected to the support plate (6); A sliding component is disposed within the support block (3).

3. A buffer device for a gantry crane according to claim 2, characterized in that, The sliding component includes: A sliding groove (10) is formed inside the support block (3); A sliding block (11) is disposed in the sliding groove (10) and is slidably connected to the sliding groove (10); The sliding plate (12) is disposed in the extrusion groove (7), is slidably connected to the extrusion groove (7), is fixedly connected to the sliding block (11), and is also fixedly connected to the extrusion rod (9); The elastic component is disposed in the extrusion groove (7).

4. A buffer device for a gantry crane according to claim 3, characterized in that, The elastic component includes: The elastic spring (13) is fixedly connected at one end to the sliding plate (12) and at the other end to the compression plate (8); An elastic damper (14) is disposed on the sliding plate (12) and is fixedly connected to the sliding plate (12).

5. A buffer device for a gantry crane according to claim 4, characterized in that, The buffer mechanism includes: The first buffer frame (15) is disposed on the fixed block (5) and is fixedly connected to the fixed block (5); The second buffer frame (16) is set inside the fixed frame (4) and is fixedly connected to the fixed frame (4); The buffer spring (17) is fixedly connected at one end to the first buffer frame (15) and at the other end to the second buffer frame (16); The rotating component is disposed on the first buffer frame (15).

6. A buffer device for a gantry crane according to claim 5, characterized in that, The rotating component includes: There are two first rotating shafts (18), and the two first rotating shafts (18) are symmetrically arranged on the first buffer frame (15) and fixedly connected to the first buffer frame (15); The first rotating plate (19) is rotatably connected to the first rotating shaft (18); The second rotating shaft (20) is disposed on the first rotating plate (19) and is rotatably connected to the first rotating plate (19); There are two third rotating shafts (21), and the two third rotating shafts (21) are symmetrically arranged on the second buffer frame (16) and fixedly connected to the second buffer frame (16); The second rotating plate (22) is rotatably connected at one end to the second rotating shaft (20) and at the other end to the third rotating shaft (21); The connecting component is disposed on the second rotating shaft (20).

7. A buffer device for a gantry crane according to claim 6, characterized in that, The connecting component includes: A connecting frame (23) is disposed on the second rotating shaft (20) and fixedly connected to the second rotating shaft (20); The connecting spring (24) is fixedly connected at one end to the connecting frame (23) and at the other end to the fixing frame (4).

Images