A safe and explosion-proof gantry crane

Abstract

This utility model discloses a safe and explosion-proof gantry crane, belonging to the technical field of gantry cranes. It includes a gantry frame, with a movable component externally mounted on the gantry frame. A lifting mechanism is fixedly connected below the movable component. A lubrication device is also externally mounted on the gantry frame, and an alarm device is fixedly connected to one side of the lubrication device. In this utility model, when lubrication is required, the movable component is simply driven to slide along the outside of the gantry frame. When it moves to the designated position, an external force acts on the lower surface of the rotating plate, causing the rotating plate to rotate around its axis within the connecting plate. This causes the sealing plug to disengage from the oil leakage hole, releasing the lubricating oil. After lubrication is completed and the movable component returns to its original position, a return spring automatically applies a reset force to the rotating plate, restoring it to its initial position. This, in turn, causes the sealing plug to re-seal the oil leakage hole, achieving automatic closure of the lubrication system.

Description

Technical Field

[0001] This utility model belongs to the technical field of gantry cranes, and in particular relates to a safe and explosion-proof gantry crane. Background Technology

[0002] A gantry crane is a lifting device with a bridge structure. Its bridge is supported by outriggers and runs on ground rails, resembling a "gate" in shape, hence its name. It is mainly used in outdoor freight yards, material yards, docks, railway freight stations, and other similar locations, suitable for lifting and transporting heavy objects. Gantry cranes have advantages such as large lifting capacity, wide operating range, and high space utilization. Different lifting mechanisms and operating attachments can be configured as needed to adapt to various operating environments.

[0003] In existing technologies, during long-term operation, moving components are prone to significant wear due to frequent contact and relative movement, requiring regular manual lubrication and maintenance. This not only increases the workload of operation and maintenance but also causes problems such as inconvenience in operation, uneven lubrication, or omissions, affecting the continuous and stable operation of the equipment.

[0004] Based on this, this utility model designs a safe and explosion-proof gantry crane to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that in the prior art, during long-term operation of equipment, the moving components are prone to significant wear due to frequent contact and relative movement, requiring regular manual lubrication and maintenance, which not only increases the workload of operation and maintenance, but also has problems such as inconvenience in operation, uneven lubrication or omission, affecting the continuous and stable operation of the equipment. Therefore, a safe and explosion-proof gantry crane is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A safe and explosion-proof gantry crane includes a gantry frame, a movable component is mounted on the outside of the gantry frame, a hoisting mechanism is fixedly connected to the lower part of the movable component, a lubrication device is mounted on the outside of the gantry frame, and an alarm device is fixedly connected to one side of the lubrication device;

[0008] The lubrication device includes an oil storage tank, which is fixedly connected to the outside of the gantry frame. The lower surface of the oil storage tank has an oil leakage hole, and a sealing plug is inserted into the oil leakage hole.

[0009] As a further description of the above technical solution:

[0010] The lubrication device also includes a mounting plate. The oil storage tank is provided with a feed port. The mounting plate is fixedly connected to the front of the oil storage tank. A rotating shaft is fixedly connected inside the mounting plate. The rotating shaft is fixedly connected to the outside of the gantry frame. Two connecting plates are provided on the outer sleeve of the rotating shaft. A rotating plate is fixedly connected below the two connecting plates. A telescopic rod is fixedly connected to the upper surface of the rotating plate. The telescopic rod is fixedly connected to the lower surface of the oil storage tank. A return spring is provided on the outer sleeve of the telescopic rod.

[0011] As a further description of the above technical solution:

[0012] One end of the pull-back spring is fixedly connected to the rotating plate, and the other end of the pull-back spring is fixedly connected to the lower surface of the oil tank.

[0013] As a further description of the above technical solution:

[0014] The sealing plug is made of easily deformable rubber and is fixedly connected to the upper surface of the rotating plate.

[0015] As a further description of the above technical solution:

[0016] The rotating plate is initially set to an inclined state, with the side with the sealing plug overlapping the lower surface of the oil tank.

[0017] As a further description of the above technical solution:

[0018] The alarm device includes a controller and a liquid level sensor. The liquid level sensor is connected through the oil tank. The controller is installed on one side of the oil tank. A wire is installed inside the controller. A buzzer-type alarm is fixedly connected to one side of the controller.

[0019] As a further description of the above technical solution:

[0020] The controller and the liquid level sensor are electrically connected via wires.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0022] 1. In this utility model, when lubrication is required, the moving component is simply driven to slide along the outside of the gantry. When it moves to the designated position, an external force is applied to the lower surface of the rotating plate, causing the rotating plate to rotate around the axis within the connecting plate, thereby causing the sealing plug to disengage from the oil leakage hole and releasing the lubricating oil. After lubrication is completed and the moving component returns to its original position, the return spring automatically applies a reset force to the rotating plate, causing the rotating plate to return to its initial position, which in turn causes the sealing plug to re-seal the oil leakage hole, thus achieving automatic closure of the lubrication system.

[0023] 2. In this utility model, when the lubricating oil level in the oil tank continues to drop and approaches the preset lower limit, the level sensor can detect the level change in real time and transmit the monitoring signal to the controller. The controller then drives the buzzer alarm to sound, reminding the operator to replenish the lubricating oil in time and ensure the continuous and effective operation of the lubrication system. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of a safe and explosion-proof gantry crane proposed in this utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of a safe and explosion-proof lubrication device for a gantry crane proposed in this utility model.

[0026] Figure 3 This is a three-dimensional structural diagram of the rotating plate of a safe and explosion-proof gantry crane proposed in this utility model;

[0027] Figure 4 This utility model proposes a safe and explosion-proof gantry crane. Figure 2 An enlarged structural diagram of part A in the middle.

[0028] Legend:

[0029] 1. Gantry frame; 2. Moving assembly; 3. Lifting mechanism; 4. Lubrication device; 401. Oil tank; 402. Feed inlet; 403. Mounting plate; 404. Rotating shaft; 405. Connecting plate; 406. Rotating plate; 407. Telescopic rod; 408. Return spring; 409. Sealing plug; 5. Alarm device; 501. Controller; 502. Wire; 503. Liquid level sensor; 504. Buzzer alarm. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-4 ,

[0032] First embodiment:

[0033] This utility model provides a technical solution: a safe and explosion-proof gantry crane, including a gantry frame 1, a movable component 2 is attached to the outside of the gantry frame 1, a lifting mechanism 3 is fixedly connected to the lower part of the movable component 2, a lubrication device 4 is attached to the outside of the gantry frame 1, and an alarm device 5 is fixedly connected to one side of the lubrication device 4.

[0034] The lubrication device 4 includes an oil reservoir 401, which is fixedly connected to the outside of the gantry frame 1. An oil leakage hole is provided on the lower surface of the oil reservoir 401, and a sealing plug 409 is installed in the oil leakage hole. A rotating plate 406 is fixedly connected to the sealing plug 409. When the rotating plate 406 rotates around the rotating shaft 404, it can synchronously drive the sealing plug 409 to disengage from or close the oil leakage hole. This structure works together to realize the linkage control of the lubrication opening and closing actions, ensuring that the oil leakage hole is always in a sealed state when not in operation, thereby improving the safety and control accuracy of the lubrication system.

[0035] Specifically, such as Figure 2-3 As shown, the lubrication device 4 also includes a mounting plate 403. The oil storage tank 401 is provided with a feed port 402. The mounting plate 403 is fixedly connected to the front of the oil storage tank 401. A rotating shaft 404 is fixedly connected inside the mounting plate 403. The rotating shaft 404 is fixedly connected to the outside of the gantry frame 1. Two connecting plates 405 are provided on the outer sleeve of the rotating shaft 404. A rotating plate 406 is fixedly connected below the two connecting plates 405. A telescopic rod 407 is fixedly connected to the upper surface of the rotating plate 406. The telescopic rod 407 is fixedly connected to the lower surface of the oil storage tank 401. A return spring 408 is provided on the outer sleeve of the telescopic rod 407. One end of the return spring 408 is fixedly connected to the rotating plate 406. One end of the return spring 408 is connected to the rotating plate 406, and the other end is connected to the lower surface of the oil storage tank 401. It can apply a restoring force to the rotating plate 406 after lubrication, so that it automatically rebounds to the initial tilted state, thereby driving the sealing plug 409 to reset. This combination enables the passive reset function of the lubrication structure, reduces manual intervention, and improves the automation level of the device;

[0036] The other end of the pull-back spring 408 is fixedly connected to the lower surface of the oil reservoir 401. The sealing plug 409 is a rubber plug that is easy to deform. The sealing plug 409 is fixedly connected to the upper surface of the rotating plate 406. The initial state of the rotating plate 406 is set to an inclined state, and the side with the sealing plug 409 overlaps the lower surface of the oil reservoir 401.

[0037] During operation, when lubrication is required, simply drive the moving component 2 to slide along the outside of the gantry 1. When it moves to the designated position, an external force acts on the lower surface of the rotating plate 406, causing the rotating plate 406 to rotate around the shaft 404 within the connecting plate 405. This causes the sealing plug 409 to disengage from the oil leakage hole, releasing the lubricating oil. After lubrication is completed and the moving component 2 returns to its original position, the return spring 408 automatically applies a reset force to the rotating plate 406, restoring it to its initial position. This, in turn, causes the sealing plug 409 to re-seal the oil leakage hole, achieving automatic closure of the lubrication system.

[0038] Second embodiment:

[0039] Specifically, such as Figure 4 As shown, the alarm device 5 includes a controller 501 and a liquid level sensor 503. The liquid level sensor 503 is connected through the oil tank 401. The controller 501 is installed on one side of the oil tank 401. A wire 502 is installed inside the controller 501. A buzzer-type alarm 504 is fixedly connected to one side of the controller 501. The controller 501 and the liquid level sensor 503 are electrically connected through the wire 502. The controller 501 and the buzzer-type alarm 504 are connected through the wire 502. When an abnormal liquid level is detected, the controller 501 promptly activates the buzzer to emit an audible alarm. This coordination realizes a closed-loop response from fault detection to proactive alert, which helps maintenance personnel to grasp the lubrication status of the equipment in a timely manner, improving the timeliness of maintenance and the continuity of equipment operation.

[0040] During operation, when the lubricating oil level in the oil reservoir 401 continues to drop and approaches the preset lower limit, the level sensor 503 can detect the level change in real time and transmit the monitoring signal to the controller 501. The controller 501 then drives the buzzer alarm 504 to sound, reminding the operator to replenish the lubricating oil in time to ensure the continuous and effective operation of the lubrication system.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A safe and explosion-proof gantry crane, comprising a gantry frame (1), characterized in that, The gantry (1) is fitted with a moving component (2), and a lifting mechanism (3) is fixedly connected to the lower part of the moving component (2). The gantry (1) is fitted with a lubrication device (4), and an alarm device (5) is fixedly connected to one side of the lubrication device (4). The lubrication device (4) includes an oil storage tank (401), which is fixedly connected to the outside of the gantry frame (1). The lower surface of the oil storage tank (401) is provided with an oil leakage hole, and a sealing plug (409) is installed in the oil leakage hole.

2. The explosion-proof gantry crane according to claim 1, characterized in that, The lubrication device (4) also includes a mounting plate (403). The oil storage tank (401) is provided with a feed port (402). The mounting plate (403) is fixedly connected to the front of the oil storage tank (401). A rotating shaft (404) is fixedly connected inside the mounting plate (403). The rotating shaft (404) is fixedly connected to the outside of the gantry frame (1). Two connecting plates (405) are provided on the outer sleeve of the rotating shaft (404). A rotating plate (406) is fixedly connected below the two connecting plates (405). A telescopic rod (407) is fixedly connected to the upper surface of the rotating plate (406). The telescopic rod (407) is fixedly connected to the lower surface of the oil storage tank (401). A return spring (408) is provided on the outer sleeve of the telescopic rod (407).

3. The explosion-proof gantry crane according to claim 2, characterized in that, One end of the pull-back spring (408) is fixedly connected to the rotating plate (406), and the other end of the pull-back spring (408) is fixedly connected to the lower surface of the oil reservoir (401).

4. A safe and explosion-proof gantry crane according to claim 2, characterized in that, The sealing plug (409) is a deformable rubber plug, and the sealing plug (409) is fixedly connected to the upper surface of the rotating plate (406).

5. A safe and explosion-proof gantry crane according to claim 2, characterized in that, The rotating plate (406) is initially set to an inclined state, and the side with the sealing plug (409) overlaps the lower surface of the oil tank (401).

6. A safe and explosion-proof gantry crane according to claim 1, characterized in that, The alarm device (5) includes a controller (501) and a liquid level sensor (503). The liquid level sensor (503) is connected through the oil tank (401). The controller (501) is installed on one side of the oil tank (401). A wire (502) is installed inside the controller (501). A buzzer-type alarm (504) is fixedly connected to one side of the controller (501).

7. A safe and explosion-proof gantry crane according to claim 6, characterized in that, The controller (501) and the liquid level sensor (503) are electrically connected by a wire (502).

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