Automatic anchoring device for trolley of portal crane and portal crane

Abstract

The utility model discloses a gantry crane trolley automatic anchoring device and a gantry crane, which comprise a cross beam, a crane trolley arranged on the cross beam and a backstop, the crane trolley is provided with an anchoring seat, the backstop is provided with a support, the support is provided with a linear telescoping mechanism and an anchoring plate matched with the anchoring seat, and the linear telescoping mechanism is connected with the anchoring plate. The first end of the anchoring plate is provided with a buckle, the second end of the anchoring plate is hinged to the linear telescopic mechanism, the middle of the anchoring plate is hinged to the support through a first pin shaft, and the linear telescopic mechanism drives the anchoring plate to swing back and forth with the first pin shaft as the axis. The clamping buckle is arranged on the anchoring seat so as to lock / loosen the anchoring seat by the clamping buckle; the automatic anchoring device is simple in structure, capable of achieving automatic anchoring through button operation in a cab, convenient to operate and control and capable of reducing labor intensity and eliminating potential safety hazards.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, and particularly to an automatic anchoring device for a trolley of a gantry crane. In addition, the utility model also relates to a gantry crane including the above-mentioned automatic anchoring device for a trolley of a gantry crane. Background Art

[0002] A gantry crane is a commonly used large-scale hoisting special equipment, and is often used in open-air working places such as docks and stockyards. An object is hoisted by a hoisting trolley on a crossbeam track. When the hoisting trolley is at the top of the gantry crane, it is particularly affected by the wind. Therefore, wind prevention and anchoring must be carried out in strong wind weather and during the shutdown state.

[0003] At present, the hoisting trolley generally anchors by manually moving a handle or a pin. Since the handle or pin for anchoring is located at the edge of the crossbeam, this manual anchoring method has the problems of inconvenient operation and high labor intensity; in addition, the crossbeam of the gantry crane is at a high height from the ground, and it is dangerous for workers to climb to a high place to carry out manual anchoring in strong wind weather, with a high risk of accidental falling. Summary of the Utility Model

[0004] The utility model provides an automatic anchoring device for a trolley of a gantry crane and a gantry crane, so as to solve the technical problems of inconvenient operation, high labor intensity and high danger existing in the existing manual anchoring method for a hoisting trolley.

[0005] According to one aspect of the utility model, an automatic anchoring device for a trolley of a gantry crane is provided, which includes a crossbeam, a hoisting trolley arranged on the crossbeam and a stop. An anchoring seat is arranged on the hoisting trolley, a bracket is arranged on the stop, a linear telescopic mechanism and an anchoring plate adapted to the anchoring seat are arranged on the bracket. A buckle is arranged at the first end of the anchoring plate, the second end of the anchoring plate is hinged to the linear telescopic mechanism, and the middle of the anchoring plate is hinged to the bracket through a first pin shaft. The linear telescopic mechanism drives the anchoring plate to swing back and forth around the first pin shaft, so as to realize the locking / loosening of the buckle to the anchoring seat.

[0006] Further, the linear telescopic mechanism is any one of a cylinder, a hydraulic cylinder, a sliding lead screw driven by a motor or a ball screw driven by a motor.

[0007] Further, the linear telescopic mechanism is a ball screw driven by a motor, which includes a motor, a screw rod driven by the motor, a ball nut movably arranged on the screw rod and a spring sleeved on the screw rod for driving the ball nut to reset. The motor is hinged to the bracket through a second pin shaft, the ball nut is hinged to the second end of the anchoring plate, and the two ends of the spring are respectively connected to the ball nut and the stop.

[0008] Further, a positioning groove is formed in the anchoring seat, and a guiding surface for guiding the buckle into the positioning groove is arranged at one end of the buckle close to the anchoring seat.

[0009] Further, an adjusting pad for connecting the hoisting trolley is arranged on the anchoring seat.

[0010] Further, a buffer is arranged on the hoisting trolley and / or the stopper.

[0011] Further, a first limit switch for sensing the horizontal position of the anchoring plate is arranged on the anchoring seat.

[0012] Further, a second limit switch for sensing the vertical position of the anchoring plate is arranged on the anchoring seat.

[0013] Further, a protective cover for protecting the linear telescopic mechanism is arranged on the bracket.

[0014] According to another aspect of the present invention, a gantry crane is further provided, which includes the automatic anchoring device for the gantry crane trolley as described above.

[0015] The present invention has the following beneficial effects:

[0016] For the automatic anchoring device for the gantry crane trolley of the present invention, the hoisting trolley can move along the crossbeam. A stopper is arranged at the end of the crossbeam, and a bracket is arranged on the stopper. The anchoring plate is hinged to the bracket through a first pin shaft. When the hoisting trolley approaches the stopper, the linear telescopic mechanism drives the anchoring plate to swing around the first pin shaft, so that the buckle on the anchoring plate locks / releases the anchoring seat. The structure is simple, and automatic anchoring can be realized through the button operation in the driver's cab. The operation is convenient, the labor intensity can be reduced, and potential safety hazards can be eliminated.

[0017] In addition to the purposes, features and advantages described above, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic structural diagram of the automatic anchoring device for the gantry crane trolley according to the preferred embodiment of the present invention;

[0020] Figure 2It is a side view of the automatic anchoring device for the trolley of the gantry crane according to the preferred embodiment of the present utility model;

[0021] Figure 3 It is a schematic structural diagram of the anchoring seat according to the preferred embodiment of the present utility model;

[0022] Figure 4 It is a sectional view of the anchoring seat according to the preferred embodiment of the present utility model;

[0023] Figure 5 It is a schematic structural diagram of the anchoring plate according to the preferred embodiment of the present utility model;

[0024] Figure 6 It is a schematic diagram of the working process of the automatic anchoring device for the trolley of the gantry crane according to the preferred embodiment of the present utility model, Figure 6 (a) is a schematic diagram of the hoisting trolley moving towards the stop; Figure 6 (b) is a schematic diagram of the anchoring seat just contacting the guiding surface; Figure 6 (c) is a schematic diagram of the guiding surface guiding the buckle into the positioning groove; Figure 6 (d) is a schematic diagram of the anchoring plate locking the anchoring seat.

[0025] Legend description:

[0026] 100, cross beam; 1, hoisting trolley; 11, anchoring seat; 111, positioning groove; 112, adjusting pad; 113, first limit switch; 114, second limit switch; 2, stop; 21, bracket; 22, linear telescopic mechanism; 221, motor; 222, screw; 223, ball nut; 224, spring; 225, second pin; 23, anchoring plate; 231, buckle; 232, first pin; 233, guiding surface; 234, third pin; 3, buffer. Detailed implementation manners

[0027] The following will describe the embodiments of the present utility model in detail with reference to the accompanying drawings, but the present utility model can be implemented in many different ways defined and covered by the following.

[0028] Please refer to together Figures 1 to 6, the automatic anchoring device for the trolley of the gantry crane in this embodiment includes a cross beam 100, a hoisting trolley 1 disposed on the cross beam 100, and a stop 2. An anchoring seat 11 is disposed on the hoisting trolley 1, a bracket 21 is disposed on the stop 2, a linear expansion and contraction mechanism 22 and an anchoring plate 23 adapted to the anchoring seat 11 are disposed on the bracket 21. A buckle 231 is disposed on the first end of the anchoring plate 23, the second end of the anchoring plate 23 is hinged to the linear expansion and contraction mechanism 22, and the middle of the anchoring plate 23 is hinged to the bracket 21 through a first pin shaft 232. The linear expansion and contraction mechanism 22 drives the anchoring plate 23 to swing back and forth around the first pin shaft 232, so as to realize the locking / unlocking of the buckle 231 to the anchoring seat 11.

[0029] For the automatic anchoring device for the trolley of the gantry crane in this embodiment, the hoisting trolley 1 can move along the cross beam 100. A stop 2 is arranged at the end of the cross beam 100, and a bracket 21 is arranged on the stop 2. The anchoring plate 23 is hinged to the bracket 21 through a first pin shaft 232. When the hoisting trolley 1 approaches the stop 2, the linear expansion and contraction mechanism 22 drives the anchoring plate 23 to swing around the first pin shaft 232, so that the buckle 231 on the anchoring plate 23 locks / unlocks the anchoring seat 11. Its structure is simple, and automatic anchoring can be realized through the button operation in the driver's cab. Its operation is convenient, which can reduce the labor intensity and eliminate potential safety hazards.

[0030] In this embodiment, the linear expansion and contraction mechanism 22 is any one of a cylinder, a hydraulic cylinder, a sliding lead screw driven by a motor, or a ball screw driven by a motor. Its structure is simple, and it can be operated through the button in the driver's cab, and the operation is convenient. Optionally, the linear expansion and contraction mechanism 22 is a cylinder, a hydraulic cylinder, or a sliding lead screw driven by a motor. The lifting and resetting processes of the anchoring plate 23 both need to be driven by the linear expansion and contraction mechanism 22.

[0031] Such as Figure 1 、 Figure 2 and Figure 5As shown in the figure, in this embodiment, the linear telescopic mechanism 22 is a ball screw driven by a motor. It includes a motor 221, a screw rod 222 driven by the motor 221, a ball nut 223 movably disposed on the screw rod 222, and a spring 224 sleeved on the screw rod 222 for driving the ball nut 223 to reset. The motor 221 is hinged to the bracket 21 through a second pin shaft 225. The ball nut 223 is hinged to the second end of the anchor plate 23 through a third pin shaft 234. The two ends of the spring 224 are respectively connected to the ball nut 223 and the stopper 2. When the anchor plate 23 needs to be lifted, the screw rod 222 driven by the motor 221 rotates. The downward force exerted by the rotation of the screw rod 222 on the ball nut 223 is greater than the elastic force of the spring 224 pushing the ball nut 223 upward, so that the ball nut 223 moves downward, thereby driving the anchor plate 23 to swing around the first pin shaft 232, making one end of the anchor plate 23 provided with the buckle 231 lift. When the anchor plate 23 resets, the motor 221 stops rotating, and the downward force exerted by the rotation of the screw rod 222 on the ball nut 223 disappears. The elastic force of the spring 224 pushing the ball nut 223 upward drives the ball nut 223 to reset. Its structure is ingenious, and the motor 221 does not need to work during the reset process, which can save energy.

[0032] As Figure 3 , Figure 4 and Figure 5 shown, in this embodiment, a positioning groove 111 is provided on the anchor base 11. A guiding surface 233 for guiding the buckle 231 into the positioning groove 111 is provided at one end of the buckle 231 close to the anchor base 11. Its structure is simple. The linear telescopic mechanism 22 does not need to drive during the automatic anchoring process. The anchor plate 23 is automatically lifted under the guidance of the guiding surface 233, which can save energy. During the automatic anchoring process, the hoisting trolley 1 moves towards the stopper 2, as Figure 6 (a) shown; until the anchor base 11 contacts the guiding surface 233, as Figure 6 (b) shown; the hoisting trolley 1 continues to move towards the stopper 2. Due to the guidance of the guiding surface 233, the anchor plate 23 is gradually lifted, as Figure 6 (c) shown; the hoisting trolley 1 continues to move towards the stopper 2, the buckle 231 enters the positioning groove 111, the anchor plate 23 locks the anchor base 11, and the hoisting trolley 1 stops moving, as Figure 6 (d) shown.

[0033] As Figure 4As shown in the figure, in this embodiment, adjustment pads 112 for connecting the hoisting trolley 1 are arranged on the anchoring base 11; the bottom surface of the anchoring base 11 is connected to the top surface of the hoisting trolley 1 through the adjustment pads 112. By increasing or decreasing the thickness of the adjustment pads 112, the height difference between the anchoring base 11 and the bottom surface of the buckle 231 can be adjusted, so that the buckle 231 can be smoothly inserted into the positioning groove 111 to achieve automatic anchoring. Optionally, the side surface of the anchoring base 11 is connected to the side surface of the hoisting trolley 1 through the adjustment pads 112. By increasing or decreasing the thickness of the adjustment pads 112, the length of the anchoring base 11 protruding in the horizontal direction can be adjusted to prevent the anchoring base 11 from colliding with the bracket 21 and being damaged.

[0034] As Figure 1 shown in the figure, in this embodiment, a buffer 3 is arranged on the hoisting trolley 1. The buffer 3 faces the stop 2, and the length of the buffer 3 protruding in the horizontal direction is greater than the length of the anchoring base 11 protruding, which can prevent the anchoring base 11 from colliding with the bracket 21 and being damaged, and ensure the normal operation of the automatic anchoring device for the gantry crane trolley; it can be understood that the buffer 3 can also be arranged on the stop 2, which can also prevent the anchoring base 11 from colliding with the bracket 21 and being damaged.

[0035] As Figure 1 shown in the figure, in this embodiment, a first limit switch 113 for sensing the horizontal position of the anchor plate 23 is arranged on the anchoring base 11. During use, the anchoring range value can be preset. When the first limit switch 113 senses that the horizontal position of the anchor plate 23 reaches within the anchoring range, the first limit switch 113 can send a signal to the controller, and the controller sends a control signal to stop the movement of the hoisting trolley 1, thereby automatically preventing the hoisting trolley 1 from hitting the stop 2.

[0036] As Figure 1 shown in the figure, in this embodiment, a second limit switch 114 for sensing the vertical position of the anchor plate 23 is arranged on the anchoring base 11; through the cooperation of the first limit switch 113 and the second limit switch 114, fault diagnosis can be carried out. For example, when loosening the anchor, if the first limit switch 113 senses that the horizontal position of the anchor plate 23 is within the anchoring range, and the vertical position of the second limit switch 114 to the anchor plate 23 has not changed, it indicates that there is a fault in the linear telescopic mechanism 22 and it needs to be repaired.

[0037] In this embodiment, a protective cover for protecting the linear telescopic mechanism 22 is arranged on the bracket 21. On the one hand, it can prevent the linear telescopic mechanism 22 from receiving external impacts and ensure the normal operation of the automatic anchoring device for the gantry crane trolley; on the other hand, it can prevent rainwater erosion and dust contamination to extend the service life of the linear telescopic mechanism 22.

[0038] A gantry crane, comprising the above-mentioned automatic anchoring device for the trolley of the gantry crane.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic anchoring device for the trolley of a gantry crane, characterized in that it includes a cross beam (100), a hoisting trolley (1) arranged on the cross beam (100), and a stopper (2). An anchoring seat (11) is arranged on the hoisting trolley (1), a bracket (21) is arranged on the stopper (2), a linear telescopic mechanism (22) and an anchoring plate (23) adapted to the anchoring seat (11) are arranged on the bracket (21). A buckle (231) is arranged at the first end of the anchoring plate (23), the second end of the anchoring plate (23) is hinged to the linear telescopic mechanism (22), and the middle of the anchoring plate (23) is hinged to the bracket (21) through a first pin shaft (232). The linear telescopic mechanism (22) drives the anchoring plate (23) to swing back and forth around the first pin shaft (232) to realize the locking / releasing of the buckle (231) on the anchoring seat (11).

2. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that the linear telescopic mechanism (22) is any one of a cylinder, a hydraulic cylinder, a sliding lead screw driven by a motor or a ball screw driven by a motor.

3. The automatic anchoring device for the trolley of a gantry crane according to claim 2, characterized in that the linear telescopic mechanism (22) is a ball screw driven by a motor, which includes a motor (221), a screw rod (222) driven by the motor (221), a ball nut (223) movably arranged on the screw rod (222), and a spring (224) sleeved on the screw rod (222) for driving the ball nut (223) to reset. The motor (221) is hinged to the bracket (21) through a second pin shaft (225), the ball nut (223) is hinged to the second end of the anchoring plate (23), and the two ends of the spring (224) are respectively connected to the ball nut (223) and the stopper (2).

4. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that a positioning groove (111) is formed on the anchoring seat (11), and a guiding surface (233) for guiding the buckle (231) into the positioning groove (111) is arranged at one end of the buckle (231) close to the anchoring seat (11).

5. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that an adjusting cushion block (112) for connecting the hoisting trolley (1) is arranged on the anchoring seat (11).

6. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that a buffer (3) is arranged on the hoisting trolley (1) and / or the stopper (2).

7. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that a first limit switch (113) for sensing the horizontal position of the anchoring plate (23) is arranged on the anchoring seat (11).

8. The automatic anchoring device for the trolley of a gantry crane according to claim 1, characterized in that A second limit switch (114) for sensing the vertical position of the anchor plate (23) is arranged on the anchor seat (11).

9. The automatic anchoring device for the trolley of the gantry crane according to claim 1, wherein A protective cover for protecting the linear telescopic mechanism (22) is arranged on the bracket (21).

10. A gantry crane, characterized in that, An automatic anchoring device for the trolley of the gantry crane according to any one of claims 1 to 9 is included.

Images