Anchoring system of trolley walking mechanism of portal crane

Abstract

The utility model relates to the technical field of cranes, and provides an anchoring system for a trolley traveling mechanism of a portal crane, which comprises an anchoring mechanism, a control system and a monitoring system, the anchoring mechanism comprises a main beam anchoring unit and a trolley anchoring unit. The main beam anchoring unit is mounted on a main beam of the portal crane and comprises a hinged shaft seat, an electric push rod, a transition joint, an anchoring pin shaft, an anchoring pin shaft handle and an anchoring lug plate; the electric push rod is installed on the hinged shaft seat, and a transition joint is arranged on a telescopic rod of the electric push rod. An L-shaped notch is formed in the transition joint; an anchoring pin shaft handle is welded on the anchoring pin shaft; the trolley anchoring unit is mounted on a trolley of the portal crane and comprises an anchoring seat, a lifting mechanism and a lifting mechanism, and positioning holes are respectively reserved in the anchoring seat and the anchoring lug plate. According to the utility model, a manual anchoring function and an automatic anchoring function are integrated, the workload of workers is reduced, and the safety and convenience of operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to an anchoring system for a trolley traveling mechanism of a gantry crane. Background Technique

[0002] A gantry crane is a variant of a bridge crane, and its main components include a gantry, a trolley traveling mechanism, a hoisting trolley (divided into an upper trolley and a lower trolley), and an electrical system. Gantry cranes are mainly used for the transfer and loading / unloading operations of goods in ports and freight yards. After the hoisting operation is completed, the hoisting trolley needs to be anchored at a specified position on the main girder of the gantry crane to prevent the hoisting trolley from displacing due to external forces during the non-working state, playing a role in protecting the on-site equipment and the safety of the staff.

[0003] At present, most of the hoisting trolleys on gantry cranes adopt a manual anchoring method, that is, a manual anchoring pin is set at a position near the track at the lower part of the hoisting trolley, and two limit baffles or pin holes are set at the anchoring points beside the track to position the anchoring pin. In the non-working state, after the hoisting trolley stops at the specified position, the staff manually releases the anchoring pin into the limiting device to achieve the anchoring of the trolley. Generally, there are two hoisting trolleys, an upper one and a lower one, running on the main girder of the gantry crane, with a total of four anchoring points. The staff needs to go to the anchoring points in turn for anchoring, and the operation is time-consuming, has low efficiency, and high danger.

[0004] With the continuous progress of crane technology in China, gantry cranes are developing towards the direction of automation and intelligence. In order to reduce the operation difficulty of the drivers, improve the work efficiency, and optimize the working environment, automatic anchoring devices for hoisting trolleys have begun to appear on the market. Although the existing automatic anchoring devices for trolleys are stronger than the manual anchoring devices in terms of operation convenience and safety, they cannot be anchored under special working conditions or in the event of system failures, and their reliability and flexibility are lower than those of the manual anchoring devices. In addition, the existing automatic anchoring devices for trolleys cannot accurately position the anchoring points and require manual calibration. Moreover, the anchoring device cannot accurately control the extension length of the anchoring pin shaft, and the degree of intelligence is relatively low. Content of the Utility Model

[0005] The utility model mainly solves the technical problems of the existing manual anchoring system, such as increasing the workload of the staff, poor safety, low efficiency, and the automatic anchoring system cannot be anchored under special working conditions or in the event of system failures, with low reliability and poor flexibility. Aiming at these problems, the utility model proposes an anchoring system for a trolley traveling mechanism of a gantry crane, which integrates the manual anchoring function and the automatic anchoring function. On the premise of retaining the advantages of flexible and reliable manual anchoring function, it reduces the workload of the staff and improves the safety and convenience of operation.

[0006] The utility model provides an anchoring system for the trolley traveling mechanism of a gantry crane, comprising: an anchoring mechanism, a control system and a monitoring system;

[0007] The anchoring mechanism includes: a main girder anchoring unit and a trolley anchoring unit;

[0008] The main girder anchoring unit is installed on the main girder of the gantry crane and includes: a hinge shaft seat, an electric push rod, a transition section, an anchoring pin shaft, an anchoring pin shaft handle and an anchoring ear plate; the hinge shaft seat is installed on the main girder, the electric push rod is installed on the hinge shaft seat, and a transition section is arranged on the telescopic rod of the electric push rod; an "L"-shaped notch is formed in the transition section;

[0009] The anchoring pin shaft is welded with an anchoring pin shaft handle; the anchoring pin shaft handle is in an "L" shape and is placed in the "L"-shaped notch of the transition section;

[0010] The anchoring ear plate is fixedly installed on the main girder and is located in the extending direction of the anchoring pin shaft;

[0011] The hinge shaft seat, the electric push rod, the transition section, the anchoring pin shaft and the anchoring ear plate are arranged horizontally;

[0012] The trolley anchoring unit is installed on the trolley of the gantry crane and includes: an anchoring seat;

[0013] Positioning holes are respectively formed in the anchoring seat and the anchoring ear plate;

[0014] The electric push rod is electrically connected with the control system, and the control system is also electrically connected with the monitoring system.

[0015] Preferably, the hinge shaft seat is installed on the main girder through a housing, and the hinge shaft seat is fixed in the housing;

[0016] The electric push rod, the transition section, the anchoring pin shaft and the anchoring pin shaft handle are located in the housing, and the anchoring pin shaft can extend out of the housing;

[0017] The housing is an openable housing.

[0018] Preferably, the anchoring pin shaft handle is connected with an anchoring pin shaft safety switch.

[0019] Preferably, a first travel switch and a second travel switch are respectively arranged beside the anchoring seat.

[0020] Preferably, safety rulers are respectively arranged beside the anchoring ear plate.

[0021] Preferably, the control system includes: an electric push rod control button box, a main control unit and a PLC controller;

[0022] The electric push rod control button box is electrically connected to the main control unit, the main control unit is electrically connected to the PLC controller, and the PLC controller is electrically connected to the electric push rod.

[0023] Preferably, a safety protection cover is provided on the electric push rod control button box.

[0024] Preferably, the monitoring system includes: a camera and a display screen;

[0025] The camera is installed beside the anchoring seat;

[0026] The display screen is installed in the cab of the gantry crane;

[0027] The camera and the display screen are respectively electrically connected to the control system.

[0028] An anchoring system for the trolley traveling mechanism of a gantry crane provided by the present utility model installs the anchoring pin shaft and the electric push rod together, adds a transition section in the middle, and sets an anchoring pin shaft handle. The anchoring pin shaft can be automatically anchored or manually anchored, thus not only retaining the original manual anchoring function but also adding an automatic anchoring function. While improving the safety and convenience of the anchoring device, it still retains the advantages of the manual anchoring device being flexible and reliable, reduces the workload of the staff, and improves the safety and convenience of operation. When the electric push rod fails, the anchoring pin shaft can be manually inserted into the positioning hole to ensure that the trolley of the gantry crane can still be locked under the condition of power failure or electric push rod failure. It solves the problem that the automatic anchoring system cannot be anchored under special working conditions or system failure conditions, and has high reliability and high flexibility.

[0029] The present utility model aims at the anchoring operation of the trolley traveling mechanism of a gantry crane on the main girder, integrates the manual anchoring function and the automatic anchoring function, and can safely, reliably and conveniently anchor the trolley of the gantry crane at the specified position. Using the horizontal anchoring method, the main part is arranged on the main girder, which saves space and is convenient for manufacturing, and at the same time makes it more labor-saving for the staff during manual anchoring operation, reduces the workload of the staff, has high safety and high efficiency. The structures of the anchoring ear plate and the anchoring seat are optimized, and the wind resistance and anti-overturning performance of the crane trolley in the anchored state are improved. An anchoring pin shaft safety switch is added, reducing the risk of structural damage caused by the trolley starting in the anchored state. Using the PLC controller and the travel switch to precisely control the anchoring process of the gantry crane trolley, the anchoring point can be accurately positioned without manual calibration, improving the safety and intelligence of the anchoring system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic structural diagram of the anchoring system for the trolley traveling mechanism of the gantry crane provided by the present utility model;

[0031] Figure 2 Structural schematic diagrams of the transition joint, the anchoring pin shaft, and the anchoring pin shaft handle provided by the present utility model;

[0032] Figure 3 Schematic diagram of the anchoring seat provided by the present utility model.

[0033] Reference numerals: 1, hinge shaft seat; 2, electric push rod; 3, transition joint; 4, anchoring pin shaft; 5, anchoring pin shaft handle; 6, anchoring seat; 7, anchoring ear plate; 8, housing; 9, anchoring pin shaft safety switch; 10, travel switch; 11, travel switch; 12, safety ruler; 13, positioning hole; 14, "L"-shaped notch. Detailed implementation manners

[0034] To make the technical problems solved by the present utility model, the technical solutions adopted, and the achieved technical effects clearer, the present utility model will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model are shown in the drawings rather than all the content.

[0035] As Figures 1-3 shown, an anchoring system for a trolley traveling mechanism of a gantry crane provided by an embodiment of the present utility model includes: an anchoring mechanism, a control system, and a monitoring system.

[0036] The anchoring mechanism includes: a main girder anchoring unit and a trolley anchoring unit.

[0037] The main girder anchoring unit is installed on the main girder of the gantry crane, specifically fixed beside the track on the main girder, and includes: a hinge shaft seat 1, an electric push rod 2, a transition joint 3, an anchoring pin shaft 4, an anchoring pin shaft handle 5, and an anchoring ear plate 7; the hinge shaft seat 1 is installed on the main girder, specifically installed on the main girder through a housing 8, the electric push rod 2 is installed on the hinge shaft seat 1, and the electric push rod 2 can rotate on the hinge shaft seat 1. A transition joint 3 is provided on the telescopic rod of the electric push rod 2; the transition joint 3 is placed horizontally, and an "L"-shaped notch 14 is provided on the transition joint 3, that is, there is a vertical slot (in the radial direction of the transition joint 3) and a horizontal slot (in the axial direction of the transition joint 3) that communicate with each other on the transition joint 3. As Figure 2As shown. An anchoring pin shaft handle 5 is welded on the anchoring pin shaft 4; the anchoring pin shaft handle 5 is in an "L" shape, and the anchoring pin shaft handle 5 is placed in the "L" - shaped notch 14 of the transition section 3, and the anchoring pin shaft 4 is connected to the transition section 3 through the anchoring pin shaft handle 5. Rotate the anchoring pin shaft handle 5 in the vertical groove (rotate in the circumferential direction of the transition section 3), rotate the anchoring pin shaft handle 5 to the end of the transverse groove, and the anchoring pin shaft handle 5 can move back and forth in the transverse groove (move in the axial direction of the transition section 3), thereby pushing the anchoring pin shaft 4 to move back and forth.

[0038] The anchoring pin shaft handle 5 is connected with an anchoring pin shaft safety switch 9. The anchoring pin shaft safety switch 9 is electrically connected to the control system.

[0039] The anchoring ear plate 7 is fixedly installed on the main beam and is located in the extending direction of the anchoring pin shaft 4. A positioning hole 13 is provided on the anchoring ear plate 7, and the shape of the positioning hole 13 of the anchoring ear plate 7 is not limited, and it can be a round hole or a long - strip hole. The anchoring ear plate 7 is fixed on the main beam but is not connected to other components of the main beam anchoring unit. Safety rulers 12 are respectively arranged on two sides of the anchoring ear plate 7.

[0040] The hinge shaft seat 1, the electric push rod 2, the transition section 3, the anchoring pin shaft 4, and the anchoring ear plate 7 are arranged horizontally on the main beam; they cooperate with the anchoring seat 6 installed on the side door of the trolley of the gantry crane to achieve anchoring. The anchoring seat 6 is driven by the trolley to move. This layout method saves space and is convenient for manufacturing, while making it more labor - saving for workers during manual anchoring operations and reducing the workload of workers.

[0041] In this embodiment, the hinge shaft seat 1 is installed on the main beam through the housing 8, and the hinge shaft seat 1 is fixed in the housing 8, so that the anchoring pin shaft 4 can deviate by a certain angle when inserted into the positioning hole, avoiding damage to the electric push rod 2; the hinge shaft seat 1 is connected to the housing 8 by bolts or welding. The electric push rod 2, the transition section 3, the anchoring pin shaft 4, and the anchoring pin shaft handle 5 are located inside the housing 8, and the anchoring pin shaft 4 can extend out of the housing 8; the housing 8 is an openable housing.

[0042] The trolley anchoring unit is installed on the trolley of the gantry crane and includes: an anchoring seat 6; a positioning hole 13 is provided on the anchoring seat 6, and the shape of the positioning hole 13 of the anchoring seat 6 is a long strip (as Figure 3 shown), such a shape of the positioning hole allows the trolley after anchoring to move a small range along the length direction of the track under windy conditions, and at the same time can effectively limit the rotational freedom of the trolley, thereby effectively improving the wind resistance and anti - overturning performance of the trolley in the anchored state. The anchoring seat 6 is specifically installed on the side of the trolley and cooperates with the horizontally arranged main beam anchoring unit for anchoring. First travel switches 10 and second travel switches 11 are respectively arranged on two sides of the anchoring seat 6.

[0043] The electric push rod 2 is electrically connected to the control system, and the control system is also electrically connected to the monitoring system. The control system includes: an electric push rod control button box, a main control unit, and a PLC controller; the electric push rod control button box is electrically connected to the main control unit, the main control unit is electrically connected to the PLC controller, and the PLC controller is electrically connected to the electric push rod 2. A safety protection cover is provided on the electric push rod control button box. The monitoring system includes: a camera and a display screen; the camera is installed beside the anchoring seat 6; the display screen is installed in the cab of the gantry crane; the camera and the display screen are respectively electrically connected to the control system. The electric push rod control button box, the main control unit, and the PLC controller can be arranged in the cab, and a safety protection cover is provided on the electric push rod control button box to prevent accidental touch.

[0044] The telescoping of the electric push rod 2 is remotely controlled by the PLC controller. The PLC controller can precisely control the length of the extension of the electric push rod 2. The telescoping distance of the electric push rod can be precisely controlled, which is not easy to cause damage to the electric push rod; the positioning accuracy of the anchoring point is relatively high; it ensures the safety and reliability of the anchoring of the gantry crane trolley. The number of anchoring mechanisms can be set according to the situation. Generally, two sets are provided for the upper trolley and the lower trolley respectively. The main control unit synchronously controls the four electric push rods 2 to ensure the synchronism of the anchoring of the upper and lower trolleys, and the synchronism of the anchoring at the four anchoring points is relatively high. The camera located beside the anchoring seat 6 can real-time capture the working state of the anchoring mechanism and transmit the video signal to the display screen in the cab, which is convenient for the staff to monitor.

[0045] In this embodiment, the anchoring mechanism is an actuator. The staff can operate the anchoring mechanism to anchor the traveling mechanism of the trolley through the control terminal or the remote control device in the driver's cab, and can conduct real-time monitoring of the anchoring device through the independent display screen in the driver's cab. When the automatic anchoring device fails to work, the staff can anchor the trolley by manually inserting a pin.

[0046] The main beam anchoring unit of the present utility model is fixed beside the track on the main beam of the gantry crane and is integrally wrapped by a housing 8. The housing 8 is a box-shaped structure that can be opened. During normal operation, the housing 8 is in a closed state, and when manual anchoring is required, the housing 8 can be opened to facilitate the manual anchoring operation. The hinge seat 1 is connected to the housing 8 by bolts or welding. The electric push rod 2 and the hinge seat 1 are connected by a pin shaft and a split pin, and the end of the electric push rod 2 is also connected to the transition section 3 by a pin shaft and a split pin. Both connection forms provide rotational freedom for the components, ensuring the stiffness and stability of the overall structure while allowing the anchoring pin shaft 4 to deflect at a certain angle when inserted into the positioning hole, avoiding damage to the electric push rod 2. The anchoring pin shaft 4 is connected to the transition section 3 through the anchoring pin shaft handle 5. By rotating and pushing the anchoring pin shaft handle 5, the anchoring pin shaft 4 can be manually released and extended into the positioning holes 13 of the anchoring seat 6 and the anchoring ear plate 7, that is, manual anchoring.

[0047] The working process of the present utility model: After the gantry crane trolley finishes working, the staff operates the trolley to move towards the anchoring point (the position where the main beam anchoring unit is located). The first travel switch 8 and the second travel switch 9 on both sides of the anchoring seat 6 located on the trolley are normally closed during normal times and are opened after the trolley enters the anchoring working state. Two safety rulers 12 are arranged on both sides of the anchoring ear plate 7 on the main beam. When the trolley moves to the position where the main beam anchoring unit is located, the two safety rulers 12 cooperate with the first travel switch 10 and the second travel switch 11 respectively to jointly complete the positioning of the trolley. When the first travel switch 10 in front of the anchoring pin shaft 4 touches the first safety ruler 12, the first travel switch 10 sends a signal to control the trolley to decelerate. When the second travel switch 11 behind the anchoring pin shaft 4 touches the second safety ruler 12, the second travel switch 11 sends a signal to control the trolley to stop running. At this time, the anchoring ear plate 7 on the side of the trolley is exactly located between the anchoring pin shaft 4 and the anchoring seat 6 (the trolley travels along the track, the track direction is perpendicular to the axis of the anchoring pin shaft 4, and the anchoring seat 6 on the trolley is inserted between the anchoring pin shaft 4 and the anchoring seat 6, Figure 1 as shown in the relative position). At this time, the anchoring mechanism receives the working signal and starts to work. The electric push rod 2 extends, driving the transition section 3 and the anchoring pin shaft 4 to move forward, so that the anchoring pin shaft 4 passes through the positioning holes 13 on the anchoring seat 6 and the anchoring ear plate 7 and locks, completing the anchoring of the trolley. The anchoring pin shaft safety switch 9 is a travel switch. When the electric push rod 2 extends, the anchoring pin shaft handle 5 will be driven to move forward, and the anchoring pin shaft safety switch 9 located behind the anchoring pin shaft handle 5 will be disconnected. The anchoring pin shaft safety switch 9 sends a signal to the main control unit, and the main control unit disconnects the operating circuit of the trolley traveling mechanism, so that the trolley cannot start, thus avoiding damage to the mechanism caused by the trolley starting in the anchored state.

[0048] The utility model can achieve automatic anchoring, and the transition section 3, the anchoring pin shaft 4, and the anchoring pin shaft handle 5 can also achieve manual anchoring. When the automatic anchoring device fails to work due to special working conditions, power failure or system failure, the staff can perform manual anchoring. During manual anchoring, rotate the anchoring pin shaft handle 5 along the "L"-shaped notch and then push the anchoring pin shaft handle 5 towards the anchoring seat 6 and the anchoring ear plate 7, and the anchoring pin shaft 4 can be inserted into the positioning holes 13 of the anchoring seat 6 and the anchoring ear plate 7 to lock the trolley. During anchoring, when the anchoring pin shaft handle 5 is pushed forward, the anchoring pin shaft safety switch 9 located behind the anchoring pin shaft handle 5 will be disconnected, thereby disconnecting the operating circuit of the trolley traveling mechanism and preventing the trolley from starting, thus avoiding damage to the mechanism caused by starting the trolley in the anchored state.

[0049] The utility model can be compatible with both automatic and manual anchoring methods, has good structural stability, safety and reliability, and can effectively reduce the workload of the staff and improve work efficiency.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent replacements can be made to some or all of the technical features, without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anchoring system for the trolley traveling mechanism of a gantry crane, characterized in that, Comprising: An anchoring mechanism, a control system and a monitoring system; The anchoring mechanism includes a main girder anchoring unit and a trolley anchoring unit; The main girder anchoring unit is installed on the main girder of the gantry crane and includes a hinge shaft seat (1), an electric push rod (2), a transition section (3), an anchoring pin shaft (4), an anchoring pin shaft handle (5), and an anchoring ear plate (7); the hinge shaft seat (1) is installed on the main girder, the electric push rod (2) is installed on the hinge shaft seat (1), and a transition section (3) is arranged on the telescopic rod of the electric push rod (2); an "L"-shaped notch (14) is formed on the transition section (3); The anchoring pin shaft (4) is welded with an anchoring pin shaft handle (5); the anchoring pin shaft handle (5) is in an "L" shape, and the anchoring pin shaft handle (5) is placed in the "L"-shaped notch (14) of the transition section (3); The anchoring ear plate (7) is fixedly installed on the main girder and is located in the extending direction of the anchoring pin shaft (4); The hinge shaft seat (1), the electric push rod (2), the transition section (3), the anchoring pin shaft (4), and the anchoring ear plate (7) are arranged horizontally; The trolley anchoring unit is installed on the trolley of the gantry crane and includes an anchoring seat (6); Positioning holes (13) are respectively provided on the anchoring seat (6) and the anchoring ear plate (7); The electric push rod (2) is electrically connected to the control system, and the control system is also electrically connected to the monitoring system.

2. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 1, characterized in that, The hinge shaft seat (1) is installed on the main girder through a housing (8), and the hinge shaft seat (1) is fixed inside the housing (8); The electric push rod (2), the transition section (3), the anchoring pin shaft (4), and the anchoring pin shaft handle (5) are located inside the housing (8), and the anchoring pin shaft (4) can extend out of the housing (8); The housing (8) is an openable housing.

3. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 1, characterized in that, The anchoring pin shaft handle (5) is connected with an anchoring pin shaft safety switch (9).

4. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 1, characterized in that, A first travel switch (10) and a second travel switch (11) are respectively arranged beside the anchoring seat (6).

5. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 4, characterized in that, Safety rulers (12) are respectively arranged beside the anchoring ear plate (7).

6. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 1, characterized in that, The control system includes an electric push rod control button box, a main control unit, and a PLC controller; The electric push rod control button box is electrically connected to the main control unit, the main control unit is electrically connected to the PLC controller, and the PLC controller is electrically connected to the electric push rod (2).

7. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 6, characterized in that, A safety protective cover is arranged on the electric push rod control button box.

8. The anchoring system of the trolley traveling mechanism of the gantry crane according to claim 1, characterized in that, The monitoring system includes a camera and a display screen; The camera is installed beside the anchoring seat (6); The display screen is installed in the cab of the gantry crane; The camera and the display screen are respectively electrically connected to the control system.

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