A portal hoist large carriage running wheel set

Abstract

The utility model discloses a door type hoist trolley walking wheel set belongs to door type hoist technical field, and it includes door type support, track, trolley walking wheel set component and a set of detachable safety component, the safety component includes the first connecting plate of fixed windproof subassembly, and the second connecting plate of fixed in wheel set component and opened has the clamping groove, and installation component passes through the second threaded column drive slope piece and spring cooperation, makes the clamping block reliablely and clamps into the clamping groove, realizes quick fixing, and the windproof subassembly includes the lever type clamping block of first threaded column drive, is used for clamping the track and produces strong braking force. The utility model solves the problem that door type hoist lacks reliable windproof measure, and there is the hidden danger of accidental sliding, has the advantages of convenient installation, reliable braking, and the sliding wheel on clamping block can reduce track abrasion.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and in particular to a gantry crane trolley travel wheel set. Background Technology

[0002] Gantry cranes are large lifting and conveying equipment widely used in water conservancy and hydropower projects, ports and docks, etc. Their main structure usually travels along tracks laid on the ground. Due to their large size and large windward area, these devices usually operate in open outdoor environments and are therefore highly susceptible to natural winds, especially strong winds.

[0003] When a gantry crane stops working and rests on the track, its own motor braking system is mainly designed for deceleration or braking during operation. However, its braking capacity may be insufficient to withstand the enormous horizontal thrust generated by continuous strong winds over a long period of time. When the wind force exceeds the sum of the equipment's own weight, track friction, and motor braking force, the massive equipment may unexpectedly slide along the track under the force of the wind.

[0004] This uncontrolled sliding poses a significant safety hazard. At best, it can cause equipment to collide with the end blocks of the track and be damaged; at worst, it can derail, overturn, or collide with other equipment, resulting in major equipment damage and personnel accidents. While existing technologies employ temporary reinforcement measures such as manual rail clamps or wedge-shaped iron blocks, these devices are typically bulky, time-consuming and labor-intensive to install, and their effectiveness depends on manual operation, making reliability difficult to guarantee. They fail to meet the safety management requirements of rapid response and efficient deployment.

[0005] Therefore, this utility model proposes a gantry crane trolley wheel set to address the shortcomings of the prior art. Utility Model Content

[0006] In view of the problem that existing gantry hoists lack a reliable and quickly installable windproof braking structure when they stop working, which leads to the safety hazard of the equipment sliding unexpectedly due to strong winds, this utility model aims to provide a gantry hoist trolley traveling wheel set with an improved structure that can effectively solve the above-mentioned problems.

[0007] This utility model provides a gantry crane trolley travel wheel assembly, including: a gantry bracket, a track, a trolley travel wheel assembly, a second connecting plate, a first connecting plate, a windproof assembly, and an installation assembly.

[0008] The second connecting plate is fixedly connected to the large vehicle traveling wheel assembly and has a slot, while the first connecting plate is fixed with the windproof component.

[0009] Furthermore, the mounting assembly is disposed between the first connecting plate and the second connecting plate, and includes a locking block for engaging the slot and a locking drive mechanism for driving the locking block to move. The windproof assembly includes at least one clamping block for clamping the track. The first connecting plate carrying the windproof assembly is detachably fixed to the second connecting plate by the mounting assembly, thus forming a complete windproof braking system.

[0010] Preferably, the windproof assembly further includes a first rotating shaft rotatably passing through the first connecting plate, the clamping block being rotatably connected about the first rotating shaft, and the windproof assembly further includes a first threaded post threadedly connected to the first connecting plate, and a second rotating shaft connected to the end of the first threaded post and abutting against the clamping block.

[0011] Preferably, the windproof component further includes two connecting blocks symmetrically fixed to the first connecting plate, each connecting block having a limiting groove for sliding at both ends of the second rotating shaft.

[0012] Preferably, the clamping block is rotatably provided with a sliding wheel on the side facing the track.

[0013] Preferably, the locking drive mechanism includes a first inclined block to which the locking block is fixed, a second inclined block whose inclined surface slides against the inclined surface of the first inclined block, and a second threaded post threadedly connected to the first connecting plate and connected to the second inclined block.

[0014] Preferably, the mounting assembly further includes a spring disposed between the first connecting plate and the first inclined block.

[0015] Preferably, the mounting assembly further includes a rotating block that is fixedly connected to the end of the second threaded post and rotatably accommodated in the internal groove of the second inclined block.

[0016] Preferably, the windproof component has two clamping blocks, which are symmetrically arranged on both sides of the track.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting an installation assembly consisting of a threaded column, an inclined block and a spring clip, the problems of complex, time-consuming and unreliable installation process of windproof devices in the prior art are solved, and the technical effect of quick installation, stable locking and easy disassembly of windproof devices is achieved.

[0018] 2. In this utility model, by adopting a threaded mechanism to drive the lever-type clamping block to clamp the track, the technical solution solves the problem that existing gantry hoists are easily blown by strong winds when they stop working due to the lack of effective braking, which poses a safety hazard. It achieves the technical effect of generating huge and stable braking force, effectively resisting wind force, and significantly improving the safety of equipment parking. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the traveling wheel assembly of a gantry crane proposed in this utility model. Figure 2 This is a schematic diagram of the track section structure of the traveling wheel assembly of a gantry crane proposed in this utility model. Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 2 Enlarged view of point B in the image.

[0020] Legend: 1. Gantry bracket; 2. Track; 3. Trolley travel wheel assembly; 4. First connecting plate; 5. Windproof assembly; 501. Connecting block; 502. First threaded post; 503. First rotating shaft; 504. Second rotating shaft; 505. Limiting groove; 506. Clamping block; 507. Sliding wheel; 6. Second connecting plate; 7. Mounting assembly; 701. Second threaded post; 702. Slot; 703. Clamping block; 704. Spring; 705. First inclined block; 706. Second inclined block; 707. Rotating block. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 4 This utility model provides a gantry crane trolley wheel set, which aims to solve the problem that existing gantry cranes lack an effective and quick-installable windproof braking structure when they stop working, resulting in the safety hazard of accidental sliding due to wind force.

[0023] like Figure 1 and Figure 2As shown, the gantry crane's traveling wheel assembly includes a gantry support 1, a track 2, and a traveling wheel assembly 3. The traveling wheel assembly 3 is installed at the bottom of the gantry support 1 and forms a rolling engagement with the track 2. The core innovation of the entire device lies in an integrated safety component, which includes a first connecting plate 4, a windproof component 5, a second connecting plate 6, and an installation component 7. The second connecting plate 6 is fixedly connected to the traveling wheel assembly 3, and a slot 702 is provided on the second connecting plate 6. The first connecting plate 4 serves as a bearing platform, on which the windproof component 5 is fixed. The installation component 7 is located between the first connecting plate 4 and the second connecting plate 6 to achieve quick and easy detachment and fixing of the two parts.

[0024] As one of the core invention points, the structure of the mounting component 7 ensures the quick assembly and disassembly of the entire windproof device. Specifically, it includes a locking block 703 and a locking drive mechanism for driving the movement of the locking block 703. The locking drive mechanism consists of a first inclined block 705, a second inclined block 706, a second threaded post 701, a spring 704, and a rotating block 707. Structurally, the locking block 703 is fixed to the first inclined block 705, and the inclined surface of the first inclined block 705 slides against the inclined surface of the second inclined block 706. The spring 704 is disposed between the first connecting plate 4 and the first inclined block 705, with its two ends abutting against both of them respectively. The second threaded post 701 is threadedly connected to the first connecting plate 4. The rotating block 707 is fixedly connected to the end of the second threaded post 701 and is rotatably accommodated in the internal groove of the second inclined block 706. When the second threaded post 701 rotates, the rotating block 707 abuts against and pushes the second inclined block 706 to move along the axial direction of the second threaded post 701.

[0025] As another core invention, the windproof component 5 is the actuator for realizing the braking function. Specifically, it includes a clamping block 506, a first rotating shaft 503, a first threaded post 502, a second rotating shaft 504, a connecting block 501, and a sliding wheel 507. Structurally, the windproof component 5 has two clamping blocks 506, which are symmetrically arranged on both sides of the track 2. The first rotating shaft 503 rotatably passes through the first connecting plate 4, and both clamping blocks 506 are rotatably connected around the first rotating shaft 503 as their axis. On the first connecting plate 4, the first threaded post 502 is threadedly connected to the first connecting plate 4, and the second rotating shaft 504 is connected to the end of the first threaded post 502 and abuts against the clamping block 506. The windproof assembly 5 also includes two connecting blocks 501 symmetrically fixed on the first connecting plate 4. Each connecting block 501 has a limiting groove 505 for sliding at both ends of the second rotating shaft 504. To reduce wear, each clamping block 506 is rotatably provided with a sliding wheel 507 facing the side of the track 2.

[0026] To enable the windproof component 5 to be quickly installed onto the wheel assembly 3 of the trolley, the core of the technical solution in this embodiment lies in the specific structural fit and connection relationship of the installation component 7. Through the combination of threads, wedges and springs 704, reliable mechanical locking and quick unlocking functions are achieved.

[0027] Please refer to the following carefully. Figure 2 and Figure 4 The core structure of the mounting component 7 is described in detail below: The mounting component 7 achieves the connection and separation of the first connecting plate 4 and the second connecting plate 6 through its internal locking drive mechanism. This mechanism consists of a locking block 703 fixed on the first inclined block 705, a second inclined block 706 whose inclined surface slides against the inclined surface of the first inclined block 705, a second threaded post 701 threadedly connected to the first connecting plate 4, a spring 704 disposed between the first connecting plate 4 and the first inclined block 705, and a rotating block 707. In the assembled state, the rotating block 707 is fixedly connected to the end of the second threaded post 701 and rotatably accommodated in the internal groove of the second inclined block 706. When the second threaded post 701 is rotated, the second threaded post 701 moves axially due to its threaded engagement with the first connecting plate 4, and drives the rotating block 707 at its end to move axially synchronously. Block 707 abuts against the bottom surface of the inner groove of the second inclined block 706. Rotating the axial movement of block 707 pushes the second inclined block 706 to move axially along the second threaded post 701. The axial movement of the second inclined block 706 causes its inclined surface to slide relative to the inclined surface of the first inclined block 705. When the second inclined block 706 moves to the position where it is separated from the first inclined block 705, the compressed spring 704 releases its elastic force and pushes the first inclined block 705, thereby causing the locking block 703 fixed on the first inclined block 705 to forcefully engage in the slot 702 opened on the second connecting plate 6. This structure of inclined surface cooperating with spring 704 reset ensures the tightness and self-locking capability of the connection. When the second threaded post 701 is rotated in the opposite direction, the second inclined block 706 will squeeze the first inclined block 705, overcome the elastic force of spring 704, and cause the locking block 703 to exit from the slot 702, thereby achieving quick unlocking.

[0028] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to achieve stable and powerful clamping of the track 2, the specific structure of the windproof component 5 can be set as follows: the first rotating shaft 503 is rotatably inserted through the first connecting plate 4, serving as the common rotation center of the two symmetrically arranged clamping blocks 506; the first threaded post 502 is threadedly connected to the first connecting plate 4 to convert the operator's rotational action into a powerful axial thrust; one end of the second rotating shaft 504 is connected to the end of the first threaded post 502, and the other end abuts against the two clamping blocks 506 to transmit the thrust; to ensure the smoothness and guidance of the movement of the second rotating shaft 504, two connecting blocks 501 are symmetrically fixed on the first connecting plate 4, and each connecting block 501 is provided with a limiting groove 505 for the two ends of the second rotating shaft 504 to slide therein, thereby precisely limiting the movement trajectory of the second rotating shaft 504 to a preset straight path.

[0029] As another preferred embodiment, in order to reduce the wear on the track 2 caused by the clamping block 506 during the clamping process and when it slips slightly under extreme wind force, a sliding wheel 507 is rotatably provided on the side of each clamping block 506 facing the track 2. When the clamping block 506 clamps the track 2, the wheel surface of the sliding wheel 507 contacts the surface of the track 2, and rolling friction replaces sliding friction.

[0030] As a further optimization of the structure of the mounting component 7, in order to achieve automatic locking of the locking block 703 and provide reliable locking force, the mounting component 7 preferably includes a spring 704, which is disposed between the first connecting plate 4 and the first inclined block 705. The spring 704 always applies a thrust to the first inclined block 705. In order to efficiently convert the rotational motion of the second threaded column 701 into the linear motion of the second inclined block 706, the mounting component 7 also preferably includes a rotating block 707, which is fixedly connected to the end of the second threaded column 701 and rotatably accommodated in the internal groove of the second inclined block 706. This structure can stably transmit the axial motion of the second threaded column 701 to the second inclined block 706, while allowing relative rotation between the two.

[0031] Working principle: When it is necessary to install a windproof device on a gantry crane that has stopped working, the installation component 7 is installed first. The second threaded column 701 is rotated, and the second threaded column 701 is axially displaced through its threaded engagement with the first connecting plate 4. This causes the rotating block 707 fixed at its end to move synchronously. The rotating block 707 then pushes the second inclined block 706 to move axially, so that the inclined surface of the second inclined block 706 slides relative to the inclined surface of the first inclined block 705 and gradually separates. At this time, the spring 704 between the first connecting plate 4 and the first inclined block 705 releases its stored elastic force, pushing the first inclined block 705. This causes the locking block 703 fixed on the first inclined block 705 to quickly and forcefully engage in the preset slot 702 on the second connecting plate 6. Through the synergistic action of the inclined surface, the thread, and the spring 704, the entire safety component and the trolley traveling wheel assembly 3 are quickly and reliably fixed.

[0032] After the windproof device is installed, if the windproof braking function needs to be activated, the first threaded post 502 in the windproof component 5 is rotated. The rotation of the first threaded post 502 will drive the second rotating shaft 504 connected to it to slide upward in a straight line in the limiting groove 505 of the connecting block 501. The upward movement of the second rotating shaft 504 will generate a thrust on the two clamping blocks 506, driving the two clamping blocks 506 to rotate inward and close around the first rotating shaft 503 as the fulcrum. Finally, the sliding wheel 507 on the inner side of the clamping block 506 tightly clamps the two sides of the track 2. The huge clamping force is converted into a strong static friction force, thereby effectively resisting the thrust generated by the wind on the gantry crane and solving the safety problem of the equipment sliding unexpectedly due to strong wind.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A gantry crane trolley travel wheel assembly, comprising a gantry support (1), a track (2), and a trolley travel wheel assembly (3) installed at the bottom of the gantry support (1) and rollingly engaging with the track (2), characterized in that, It also includes: The second connecting plate (6) is fixedly connected to the large vehicle traveling wheel assembly (3), and the second connecting plate (6) is provided with a slot (702), the first connecting plate (4), the windproof assembly (5) is fixed to the first connecting plate (4), the windproof assembly (5) includes at least one clamping block (506) for clamping the track (2), and the mounting assembly (7) is disposed between the first connecting plate (4) and the second connecting plate (6). The mounting assembly (7) includes a locking block (703) for locking into the slot (702), and a locking drive mechanism for driving the locking block (703) to move.

2. The gantry crane trolley wheel set according to claim 1, characterized in that, The windproof component (5) also includes: A first rotating shaft (503) is rotatably mounted on the first connecting plate (4). The clamping block (506) is rotatably connected around the first rotating shaft (503). A first threaded post (502) is threadedly connected to the first connecting plate (4). A second rotating shaft (504) is connected to the end of the first threaded post (502) and abuts against the clamping block (506) to push the clamping block (506) to rotate when the first threaded post (502) rotates.

3. The gantry crane trolley wheel set according to claim 2, characterized in that, The windproof component (5) also includes two connecting blocks (501) symmetrically fixed on the first connecting plate (4), and each connecting block (501) has a limiting groove (505) for sliding at both ends of the second rotating shaft (504).

4. The gantry crane trolley wheel set according to claim 2, characterized in that, The clamping block (506) is rotatably provided with a pulley (507) on the side facing the track (2).

5. The gantry crane trolley wheel set according to claim 1, characterized in that, The locking drive mechanism is part of the mounting assembly (7), which includes: The first inclined block (705) is fixed to the first inclined block (705), the second inclined block (706) has its inclined surface slidingly attached to the inclined surface of the first inclined block (705), and the second threaded column (701) is threadedly connected to the first connecting plate (4) and connected to the second inclined block (706) for driving the second inclined block (706) to move along its axial direction.

6. The gantry crane trolley wheel set according to claim 5, characterized in that, The mounting assembly (7) also includes a spring (704) disposed between the first connecting plate (4) and the first inclined block (705).

7. The gantry crane trolley wheel set according to claim 5, characterized in that, The mounting assembly (7) further includes a rotating block (707), which is fixedly connected to the end of the second threaded post (701) and rotatably accommodated in the internal groove of the second inclined block (706).

8. The gantry crane trolley wheel set according to claim 1, characterized in that, The windproof component (5) has two clamping blocks (506) which are symmetrically arranged on both sides of the track (2).

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