Novel windproof braking device for portal crane

Abstract

The invention relates to the technical field of brake equipment, in particular to a novel portal crane windproof braking device which comprises a device rack, a speed reduction braking motor, a steel wire rope and a braking executing mechanism, the braking executing mechanism comprises a push rod, a return spring, a connecting rod assembly and a braking iron wedge, and the speed reduction braking motor is arranged on a portal crane walking trolley and located above the device rack; the steel wire rope is connected between the deceleration brake motor and the push rod. The connecting rod assembly is hinged between the push rod and the brake iron wedge. According to the novel portal crane windproof braking device, an electric hydraulic pusher is omitted, the braking iron wedge is lifted in the traction mode that the speed reduction braking motor drives the steel wire rope, falling of the braking iron wedge is achieved through the return spring, and the speed reduction braking motor is installed at the high position of the portal crane walking trolley by increasing the length of the steel wire rope; the problem that the motor is soaked by tide water during storm surge is effectively avoided, and the replacement and maintenance cost of the device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of brake equipment, in particular to a novel windproof brake device for a door machine. Background Art

[0002] Electric windproof iron wedges are commonly used safety brake devices for port gantry cranes. When the gantry crane is working, it can be safely braked when encountering strong winds. At present, electric windproof iron wedges rely on electro-hydraulic windproof brakes to lift and drop the iron wedges to achieve safe braking. The traditional electro-hydraulic windproof brake consists of a brake frame and an electro-hydraulic pusher. The iron wedges are lifted and lowered by driving the electric hydraulic pusher push rod to lift and drop. Port gantry cranes usually operate at the front of the dock. There are many strong winds at the seaside, especially during storm surges, which cause the water level at the front of the dock to rise. The motor of the existing electric hydraulic pusher is installed at the bottom of the gantry crane trolley. There is a problem that the motor is easily soaked and burned by the tide during storm surges. At the same time, the hydraulic cylinder of the electric hydraulic pusher will have oil leakage and oil seepage problems after long-term use. Summary of the Invention

[0003] The purpose of the present invention is to provide a novel windproof brake device for a door machine to overcome the problems existing in the existing equipment.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a new type of gantry crane windproof brake device, including a device frame, a mounting frame, a deceleration brake motor, a wire rope and a brake actuator, the brake actuator includes a push rod, a return spring, a connecting rod assembly and a brake iron wedge, the deceleration brake motor is installed on the mounting frame, the mounting frame is arranged on the gantry crane walking trolley and is located above the device frame, the device frame is installed on the mounting frame of the crane, the push rod is connected to one end of the return spring, the other end of the return spring is connected to the device frame, the wire rope is connected between the deceleration brake motor and the push rod, and the connecting rod assembly is hinged between the push rod and the brake iron wedge.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows: As a further improvement of the above technical solution, the output shaft of the deceleration brake motor is connected to the drum, one end of the wire rope is wound around the drum, and the other end of the wire rope is connected to the push rod.

[0006] As a further improvement of the above technical solution, the connecting rod assembly includes a short lever, a long lever, a long shaft connected between the short lever and the long lever, and a connecting rod connected between the long lever and the brake iron wedge, and the long shaft is rotatably mounted on the device frame.

[0007] As a further improvement of the above technical solution, a manual lever is provided at one end of the long shaft outside the device frame, and the manual lever is used to manually operate the manual lever when the power is off to make the brake iron wedge fall.

[0008] As a further improvement of the above technical solution, the middle of the long shaft is connected to one end of the long lever, the other end of the long lever is hinged to one end of the connecting rod through a pin, and the other end of the connecting rod is hinged to the brake iron wedge through a pin.

[0009] As a further improvement of the above technical solution, the other end of the long shaft outside the device frame is connected to one end of the short lever, and the other end of the short lever is hinged to the push rod through a pin.

[0010] As a further improvement of the above technical solution, the device frame is equipped with two limit switches above and below the short lever, and the two limit switches form an electrical interlock to prevent overwinding or failure to reach the position.

[0011] As a further improvement of the above technical solution, the mounting frame is provided with a pulley above the device frame, and the other end of the wire rope is connected to the push rod through the pulley.

[0012] As a further improvement of the above technical solution, a waterproof protective cover is provided on the mounting frame, and the deceleration brake motor and the reel are both arranged in the waterproof protective cover.

[0013] As a further improvement of the above technical solution, a lifting mechanism is installed on the mounting frame of the crane, and the lifting mechanism is connected to the mounting frame and is used to drive the mounting frame and the deceleration brake motor to rise.

[0014] The beneficial effects of the present invention are as follows: the new gantry crane windproof brake device provided by the present invention eliminates the electric hydraulic pusher, and instead uses a reduction brake motor to drive the traction of the wire rope to lift the brake iron wedge, and the return spring causes the brake iron wedge to fall. By increasing the length of the wire rope, the reduction brake motor is installed at a higher position on the gantry crane trolley, effectively avoiding the problem of the motor being soaked by tide water during storm surges, and also solving the problem of oil leakage from the push rod oil seal, thereby reducing the replacement and maintenance costs of the device. Therefore, through the above technical solutions, the present invention successfully solves the problems existing in traditional windproof brake devices, and provides a strong guarantee for the safe operation of port gantry cranes. The new gantry crane windproof brake device can be widely used in coastal port equipment, such as gantry cranes, quay cranes, yard cranes and other rail equipment, and has broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and examples.

[0016] Figure 1 This is a structural diagram of a novel door machine windproof brake device provided by a preferred embodiment of the present invention; Figure 2 yes Figure 1 A side view of the brake actuator in FIG. Figure 3This is a schematic diagram of the structure of a further improved novel windproof brake device for a door machine provided by the present invention; In the figure: 1. Deceleration brake motor; 2. Wire rope; 3. Push rod; 4. Brake wedge; 5. Return spring; 6. Device frame; 71. Short lever; 72. Long lever; 73. Long shaft; 74. Connecting rod; 75. Manual lever; 8. Limit switch; 9. Pulley; 10. Waterproof protective cover; 11. Reel; 12. Mounting frame; 13. Travel wheel; 14. Mounting frame; 15. Humidity sensor; 16. Controller; 17. Lifting mechanism. DETAILED DESCRIPTION

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0020] like Figure 1 、 Figure 2As shown, a novel windproof brake device for a door machine is provided in a preferred embodiment of the present invention, comprising a device frame 6, a mounting frame 12, a deceleration brake motor 1, a wire rope 2 and a brake actuator, the brake actuator comprising a push rod 3, a return spring 5, a connecting rod assembly and a brake iron wedge 4, the push rod 3 is connected to one end of the return spring 5, the other end of the return spring 5 is connected to the device frame 6, the wire rope 2 is connected between the deceleration brake motor 1 and the push rod 3, and the connecting rod assembly is hinged between the push rod 3 and the brake iron wedge 4.

[0021] The brake motor 1 is mounted on a mounting frame 12, which is located above the gantry crane's traveling trolley and above the device frame 6. The device frame 6 is screwed to the crane's mounting frame 14. The brake motor 1 provides power to raise and lower the brake wedge 4 by winding and unwinding the wire rope 2. The output shaft of the brake motor 1 is connected to a drum 11. The mounting frame 12 is equipped with a pulley 9 above the device frame 6. One end of the wire rope 2 is wound around the drum 11, and the other end of the wire rope 2 is connected to the push rod 3 via pulley 9. The brake motor 1 drives the drum 11 to rotate, winding and unwinding the wire rope 2, thereby raising and lowering the brake wedge 4. The brake wedge 4 is an integral part of the windbreak brake system, used to lock the track when needed to prevent the crane from moving. A return spring 5 is used to lower the brake wedge 4. When the brake motor 1 is reversed, the return spring 5 pulls the wire rope 2 downward, causing the brake wedge 4 to fall. Preferably, a waterproof protective cover 10 is provided on the mounting frame 12, and the deceleration brake motor 1 and the reel 11 are both arranged in the waterproof protective cover 1, thereby effectively preventing the deceleration brake motor 1 from being soaked by tide water during storm surges.

[0022] like Figure 3 As shown, as a further improvement to the above technical solution, the mounting frame 12 is equipped with a humidity sensor 15 and a controller 16. A lifting mechanism 17 is mounted on the crane's mounting frame 14. Lifting mechanism 17 is connected to mounting frame 12 and is used to drive mounting frame 12 and deceleration brake motor 1 upward when humidity sensor 15 detects that the humidity around deceleration brake motor 1 is greater than a set value, effectively preventing deceleration brake motor 1 from being soaked by tide water during storm surges. Controller 16 is located within waterproof protective cover 1 and is electrically connected to humidity sensor 15. Humidity sensor 15 transmits a detected humidity signal to controller 16, which controls lifting mechanism 17 to raise deceleration brake motor 1. Controller 16 can be a PLC controller or a control chip, and lifting mechanism 17 can be a waterproof hydraulic cylinder.

[0023] The connecting rod assembly includes a short lever 71, a long lever 72, a long shaft 73 connected between the short levers 71 and 72, and a connecting rod 74 connected between the long lever 72 and the brake wedge 4. The long shaft 73 is rotatably mounted on the device frame 6. A manual lever 75 is provided at one end of the long shaft 73 outside the device frame 6. The other end of the long shaft 73 outside the device frame 6 is connected to one end of the short lever 71. The other end of the short lever 71 is hinged to the push rod 3 via a pin. Two limit switches 8 are installed above and below the device frame 6. The middle of the long shaft 73 is connected to one end of the long lever 72. The other end of the long lever 72 is hinged to one end of the connecting rod 74 via a pin. The other end of the connecting rod 74 is hinged to the brake wedge 4 via a pin. When the power is off, the manual lever 75 can be manually operated to lower the brake wedge 4. The two limit switches 8 form an electrical interlock to prevent overwinding or under-positioning.

[0024] The working principle of the present invention is: when the portal crane needs to move, the driver controls the deceleration brake motor 1 in the operating room, the deceleration brake motor 1 is energized, the deceleration brake motor 1 drives the drum 11 to rotate to wind up the wire rope 2, the push rod 3 is pulled upward by the wire rope 2, and the return spring 5 connected to the push rod 3 is extended. The push rod 3 rises and drives the short lever 71 to rotate, and drives the long lever 72 to rotate through the long shaft 73. The long lever 72 lifts the brake wedge 4 through the connecting rod 74, so that the brake wedge 4 leaves the crane traveling wheel 13 and the road surface. After reaching a certain height, the short lever 71 triggers a limit switch 8 to output an electrical signal, so that the deceleration brake motor 1 is powered off, and the portal crane can operate normally.

[0025] When the gantry crane is braked for windbreak, the brake wedge 4 needs to be dropped, the deceleration brake motor 1 reverses to release the wire rope 2, the return spring 5 contracts and pulls the push rod 3 and the wire rope 2 down, the push rod 3 descends and drives the short lever 71 to rotate, and drives the long lever 72 to rotate through the long shaft 73, and the long lever 72 drives the brake wedge 4 to drop through the connecting rod 74 until the brake wedge 4 is in close contact with the track and wedged under the crane traveling wheel 13 to form a mechanical lock; after the brake wedge 4 falls into place, the short lever 71 triggers another limit switch 8 to output an electrical signal, the deceleration brake motor 1 loses power, and the friction between the crane traveling wheel 13 and the brake wedge 4, and the brake wedge 4 and the road surface prevents the crane traveling wheel 13 from rolling and the gantry crane from slipping, thereby playing a windbreak role.

[0026] The novel gantry crane windproof brake device provided by the present invention eliminates the electric hydraulic pusher and instead uses a reduction brake motor 1 to drive the wire rope 2 to lift the brake wedge 4, and the return spring 5 to lower the brake wedge 4. By increasing the length of the wire rope 2, the reduction brake motor 1 is installed at a higher position on the gantry crane trolley, effectively avoiding the problem of the motor being soaked by tide water during storm surges, and also solving the problem of oil leakage from the push rod 3 oil seal, thereby reducing the replacement and maintenance costs of the device. Therefore, through the above technical solutions, the present invention successfully solves the problems existing in traditional windproof brake devices and provides a strong guarantee for the safe operation of port gantry cranes. The novel gantry crane windproof brake device can be widely used in coastal port equipment, such as gantry cranes, quay cranes, yard cranes and other rail equipment, and has broad market prospects.

[0027] Any matters not mentioned in the above specific embodiments of the present invention belong to the common knowledge in this field and can be implemented with reference to the common knowledge.

[0028] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the content of the specification and must be determined according to the scope of the claims.

Claims

1. A new type of windproof brake device for door machine, characterized by: It includes a device frame, a mounting frame, a deceleration brake motor, a wire rope and a brake actuator. The brake actuator includes a push rod, a return spring, a connecting rod assembly and a brake iron wedge. The deceleration brake motor is installed on the mounting frame. The mounting frame is set on the gantry crane walking trolley and is located above the device frame. The device frame is installed on the mounting frame of the crane. The push rod is connected to one end of the return spring, and the other end of the return spring is connected to the device frame. The wire rope is connected between the deceleration brake motor and the push rod, and the connecting rod assembly is hinged between the push rod and the brake iron wedge.

2. The novel windproof brake device for door crane according to claim 1 is characterized in that: The output shaft of the deceleration brake motor is connected to the drum, one end of the wire rope is wound around the drum, and the other end of the wire rope is connected to the push rod.

3. The novel windproof brake device for door crane according to claim 2 is characterized in that: The connecting rod assembly comprises a short lever, a long lever, a long shaft connected between the short lever and the long lever, and a connecting rod connected between the long lever and the brake iron wedge. The long shaft is rotatably mounted on the device frame.

4. The novel windproof brake device for door crane according to claim 3 is characterized in that: A manual lever is provided at one end of the long shaft outside the device frame. The manual lever is used for manually operating the manual lever when power is off to make the brake iron wedge fall.

5. The novel windproof brake device for door crane according to claim 4 is characterized in that: The middle of the long shaft is connected to one end of a long lever, the other end of the long lever is hinged to one end of a connecting rod through a pin shaft, and the other end of the connecting rod is hinged to a brake iron wedge through a pin shaft.

6. The novel windproof brake device for door crane according to claim 5 is characterized in that: The other end of the long shaft outside the device frame is connected to one end of a short lever, and the other end of the short lever is hinged to the push rod through a pin shaft.

7. The novel windproof brake device for door crane according to claim 6 is characterized in that: The device frame is equipped with two limit switches above and below the short lever, and the two limit switches form an electrical interlock to prevent over-winding or failure to reach the position.

8. The novel windproof brake device for door crane according to claim 7 is characterized in that: The mounting frame is provided with a pulley above the device frame, and the other end of the wire rope is connected to the push rod through the pulley.

9. The novel windproof brake device for door crane according to claim 2 is characterized in that: A waterproof protective cover is provided on the mounting frame, and the deceleration brake motor and the reel are both arranged in the waterproof protective cover.

10. The novel windproof brake device for door crane according to claim 1 is characterized in that: A lifting mechanism is installed on the mounting frame of the crane. The lifting mechanism is connected to the mounting frame and is used to drive the mounting frame and the deceleration brake motor to rise.

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