Movable gantry crane

Abstract

The utility model discloses a movable gantry crane, which relates to the technical field of gantry cranes and particularly comprises a main body rotating table, one side of the top end of the rotating table is fixedly connected with a motor, and the bottom end of an output shaft of the motor penetrates through the rotating table and is fixedly connected with a first gear. One side of the first gear is connected with a second gear in a meshed mode, the inner surface of the second gear is fixedly connected with a rotating rod, the motor is controlled to be started through the control chamber, the first gear, the second gear and the rotating rod are matched to drive the control chamber to rotate, and when the rotating rod rotates, a cam and a T-shaped piston are matched to drive the motor to rotate. When the cam is separated from the T-shaped piston, the T-shaped piston is reset due to the gravity action of the lubricating liquid, and the lubricating liquid can be added into the lubricating barrel through the feeding pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to portal jib crane technical field, concretely is movable portal jib crane. BACKGROUND

[0002] Portal jib crane is a typical revolving rotary arm frame type rail operation type crane, and the portal jib crane is widely used for cargo loading and unloading of port and wharf, construction and installation of shipyard and construction engineering of large hydropower station. On the base of the portal jib crane, a rotating mechanism of the crane is arranged, and the portal frame is actually a load-bearing part of the crane. A running mechanism is arranged under the portal frame, and the running mechanism can walk on the track arranged on the ground. An arm frame of a hoisting mechanism and an amplitude changing mechanism are further arranged on the upper surface of the rotating mechanism. The four mechanisms work cooperatively to complete installation of equipment or ship sections or cargo loading and unloading operations.

[0003] The movable portal jib crane disclosed in the Chinese utility model patent application publication No. CN111517233A avoids friction between dust and the rotary rod by arranging a dust cover. However, when the rotary rod and the rotating disc rotate, the surface of the rotary rod will rub against the rotating disc, which will wear the rotary rod and reduce the service life of the portal jib crane. In addition, the portal jib crane is very high and large, and the swing amplitude is large when the portal jib crane works, which will cause the portal jib crane to tilt. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a movable portal jib crane to solve the problems raised in the above background.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a main body rotating table is provided, the top end of the rotating table is fixedly connected with an electric motor on one side, the bottom end of the output shaft of the electric motor penetrates the rotating table and is fixedly connected with a first gear, the first gear is meshingly connected with a second gear on one side, and the inner surface of the second gear is fixedly connected with a rotary rod.

[0008] Optionally, the surface of the rotary rod is fixedly connected with a cam at the bottom end, the inside of the rotating table is fixedly connected with a lubricating barrel on one side, the air inlet of the lubricating barrel is communicated with an air inlet pipe, the inside of the air inlet pipe is slidingly connected with a T-shaped piston, and the T-shaped piston penetrates the air inlet pipe on one side and is in contact with the cam.

[0009] Optionally, the inside one side of the air inlet pipe is fixedly connected with a limiting block at both ends, the limiting block is in contact with the T-shaped piston, the inside of the lubricating barrel is slidably connected with a circular piston, the inside bottom of the lubricating barrel is fixedly connected with a blocking block at both sides, and the blocking block is in contact with the circular piston.

[0010] Optionally, the discharge port of the lubricating barrel is communicated with a spray head, the feeding port of the lubricating barrel is communicated with a feeding pipe, the feeding port of the feeding pipe penetrates the rotating table, the top end of the rotating rod penetrates the rotating table and is fixedly connected with a control room, one side of the control room is fixedly connected with a hanger.

[0011] Optionally, the front and rear sides of the rotating table are provided with mounting grooves, the mounting grooves are dry character grooves, one side of the mounting groove is rotatably connected with a rotating shaft, the surface of the rotating shaft is fixedly connected with a rotating plate, the top end of one side of the rotating plate is fixedly connected with an air cylinder, and the bottom end of the piston rod of the air cylinder penetrates the rotating plate and is fixedly connected with a supporting block.

[0012] Optionally, an arc-shaped groove is formed in one side of the front surface of the rotating plate, a connecting shaft is rotatably connected in the middle of the inside of the rotating table, limiting plates are formed in the surface of the connecting shaft at both sides, and the limiting plates are slidably connected with the arc-shaped groove.

[0013] Optionally, one end of the connecting shaft is fixedly connected with a screw rod, internal threads are formed in the middle of the inside of the rotating table, and the screw rod is in threaded connection with the internal threads.

[0014] Optionally, the other end of the connecting shaft penetrates the rotating table and is fixedly connected with a handle, and one side of the front surface of the rotating plate is fixedly connected with a pull ring.

[0015] (Three) beneficial effects

[0016] The mobile portal crane has the following beneficial effects:

[0017] 1. When the portal crane needs to be controlled to rotate, the motor is started by the control room, the control room is driven to rotate by the cooperation of the first gear, the second gear and the rotating rod, the circular piston is driven to move upward by the cooperation of the cam and the T-shaped piston while the rotating rod rotates, the friction with the rotating table is reduced by the lubricating liquid, the service life of the rotating rod can be prolonged, and when the cam is separated from the T-shaped piston, the T-shaped piston is reset due to the gravity of the lubricating liquid, and the lubricating liquid can be added into the lubricating barrel through the feeding pipe.

[0018] 2、The mobile portal crane, through the cooperation of the handle and the connecting shaft, can drive the limiting plate to separate from the arc-shaped groove of the rotating plate, hold the pull ring, drive the rotating plate to rotate outward around the rotating shaft, make the rotating plate perpendicular to the rotating table, avoid the movement of the rotating plate through the limiting of the installation groove, control the starting of the cylinder through the control room, expand the contact area of the rotating table and the ground through the supporting block, can make the rotating table more stable, can avoid the large swing of the portal crane during work and cause tilting, and after the work of the portal crane is completed, the limiting plate can be fixed through the cooperation of the screw rod and the internal thread, and the rotating plate is fixed through the limiting plate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic view of the utility model structure;

[0020] Figure 2 It is a three-dimensional schematic view of the utility model structure; Figure 1 It is an enlarged structural schematic view of position A in the utility model;

[0021] Figure 3 It is a main view schematic view of the utility model structure;

[0022] Figure 4 It is a three-dimensional schematic view of the utility model structure; Figure 3 It is an enlarged structural schematic view of position B in the utility model;

[0023] Figure 5 It is a three-dimensional schematic view of the utility model structure;

[0024] Figure 6 It is an enlarged structural schematic view of position C in the utility model; Figure 5

[0025] Figure 7 It is a side view schematic view of the utility model structure.

[0026] In the drawing: 1, pull ring; 2, rotating table; 3, rotating shaft; 4, cylinder; 5, motor; 6, control room; 7, hanging bracket; 8, rotating rod; 9, feed pipe; 10, rotating plate; 11, supporting block; 12, limiting plate; 13, connecting shaft; 14, first gear; 15, second gear; 16, cam; 17, nozzle; 18, lubricating barrel; 19, circular piston; 20, air inlet pipe; 21, T-shaped piston; 22, limiting block; 23, screw rod; 24, blocking block; 25, installation groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Embodiment 1​

[0029] Please refer to Figures 1 to 7 The utility model provides technical scheme: mobile portal crane, including main body rotating table 2, the top end one side of rotating table 2 is fixedly connected with motor 5, the bottom of the output shaft of motor 5 is penetrated in rotating table 2 and is fixedly connected with first gear 14, one side of first gear 14 is engaged with second gear 15, the inner fixed surface of second gear 15 is connected with rotating rod 8, the surface bottom of rotating rod 8 is fixedly connected with cam 16, the inside one side of rotating table 2 is fixedly connected with lubricating bucket 18, the air inlet of lubricating bucket 18 is connected with air pipe 20, the inside sliding connection of air pipe 20 has T piston 21, one side of T piston 21 is penetrated in air pipe 20 and is in contact with cam 16, the inside one side both ends of air pipe 20 are fixedly connected with limit block 22, limit block 22 is in contact with T piston 21, the inside sliding connection of lubricating bucket 18 has circular piston 19, the inside bottom both sides of lubricating bucket 18 are fixedly connected with blocking block 24, blocking block 24 is in contact with circular piston 19, the discharge port of lubricating bucket 18 is connected with spray head 17, the feed inlet of lubricating bucket 18 is connected with feed pipe 9, the feed inlet of feed pipe 9 is penetrated in rotating table 2, the top end of rotating rod 8 is penetrated in rotating table 2 and is fixedly connected with control room 6, motor 5 is electrically connected with control room 6 by wire, one side of control room 6 is fixedly connected with hanger 7;

[0030] In use, when the portal crane needs to be controlled to rotate, the motor 5 is started by the control room 6, the first gear 14 is driven to rotate by the output shaft of the motor 5, the second gear 15 is driven to rotate due to the meshing action of the first gear 14 and the second gear 15, the control room 6 is driven to rotate by the rotating rod 8, the cam 16 is driven to rotate while the rotating rod 8 is rotating, when the cam 16 contacts the T-shaped piston 21, the T-shaped piston 21 is extruded by the cam 16 and slides to the right inside the air pipe 20, the air in the air pipe 20 is extruded by the T-shaped piston 21, the pressure at the bottom of the circular piston 19 is increased, the circular piston 19 is driven to move upward, the extruded lubricating liquid is sprayed on the surface of the rotating rod 8 by the spray head 17, the friction between the rotating rod 8 and the rotating table 2 is reduced by the lubricating liquid, the service life of the rotating rod 8 is prolonged, when the cam 16 is separated from the T-shaped piston 21, the circular piston 19 is driven to move downward due to the gravity of the lubricating liquid, the air below the circular piston 19 is extruded, the T-shaped piston 21 is reset, and the lubricating liquid can be added to the lubricating bucket 18 through the feed pipe 9.

[0031] Example 2

[0032] Please refer to Figures 1 to 7The utility model provides technical scheme: Mobile portal crane, the front and back two sides of rotary table 2 are provided with installation groove 25, installation groove 25 is dry character groove, one side of installation groove 25 is connected with the pivot 3 of rotation, the surface fixed connection of pivot 3 has rotary plate 10, the top one side fixed connection of rotary plate 10 has pneumatic cylinder 4, the bottom of pneumatic cylinder 4's piston rod is passed through rotary plate 10 and is fixedly connected with support block 11, the front surface one side of rotary plate 10 is provided with arc slot, the front and back inside middle part rotation of rotary table 2 is connected with connecting shaft 13, the surface both sides of connecting shaft 13 are provided with limit plate 12, limit plate 12 and arc slot sliding connection, one end of connecting shaft 13 is fixedly connected with screw rod 23, the front and back inside middle part of rotary table 2 is provided with internal thread, and screw rod 23 is connected with internal thread, the other end of connecting shaft 13 is passed through rotary table 2 and is fixedly connected with handle, the front surface one side of rotary plate 10 is fixedly connected with pull ring 1;

[0033] In use, hold the handle, make it drive connecting shaft 13 and screw rod 23 rotate, make it drive limit plate 12 rotate ninety degrees, can drive limit plate 12 to separate from the arc slot of rotary plate 10, hold pull ring 1, make it drive rotary plate 10 to rotate outward around pivot 3, make it rotary plate 10 and rotary table 2 are perpendicular, avoid rotary plate 10 movement through the limit of installation groove 25, control pneumatic cylinder 4 to start through control room 6, drive support block 11 to move down through the piston rod of pneumatic cylinder 4, make it support block 11 contact ground, enlarge the contact area of rotary table 2 and ground through support block 11, can make rotary table 2 more stable, can avoid portal crane to sway excessively when working and lead to tilt, when portal crane is finished, make rotary plate 10 reset through the cooperation of pivot 3 and rotary plate 10, make it rotate handle, drive limit plate 12 reset, can fix limit plate 12 through the cooperation of screw rod 23 and internal thread, fix rotary plate 10 through limit plate 12.

[0034] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A mobile gantry crane comprising a main body rotation platform (2), characterized in that: The top end side of the rotating table (2) is fixedly connected with a motor (5), the bottom end of the output shaft of the motor (5) penetrates the rotating table (2) and is fixedly connected with a first gear (14), one side of the first gear (14) is engagedly connected with a second gear (15), the inner surface of the second gear (15) is fixedly connected with a rotating rod (8).

2. Mobile gantry crane according to claim 1, characterized in that The surface bottom end of the rotating rod (8) is fixedly connected with a cam (16), one side of the inner part of the rotating table (2) is fixedly connected with a lubricating barrel (18), the air inlet of the lubricating barrel (18) is communicated with an air inlet pipe (20), the inner part of the air inlet pipe (20) is slidably connected with a T-shaped piston (21), one side of the T-shaped piston (21) penetrates the air inlet pipe (20) and is in contact with the cam (16).

3. Mobile gantry crane according to claim 2, characterized in that The inner part of the air inlet pipe (20) is fixedly connected with a limiting block (22) at both ends, the limiting block (22) is in contact with the T-shaped piston (21), the inner part of the lubricating barrel (18) is slidably connected with a circular piston (19), the inner bottom end of the lubricating barrel (18) is fixedly connected with a blocking block (24) at both sides, the blocking block (24) is in contact with the circular piston (19).

4. The mobile gantry crane of claim 2, wherein: The discharge port of the lubricating barrel (18) is communicated with a spray head (17), the feed port of the lubricating barrel (18) is communicated with a feed pipe (9), the feed port of the feed pipe (9) penetrates the rotating table (2), the top end of the rotating rod (8) penetrates the rotating table (2) and is fixedly connected with a control chamber (6), one side of the control chamber (6) is fixedly connected with a hanger (7).

5. The mobile gantry crane of claim 1, wherein: The front and rear sides of the rotating table (2) are provided with mounting grooves (25), the mounting grooves (25) are dry character grooves, one side of the mounting grooves (25) is rotatably connected with a rotating shaft (3), the surface of the rotating shaft (3) is fixedly connected with a rotating plate (10), one side of the top end of the rotating plate (10) is fixedly connected with an air cylinder (4), the bottom end of the piston rod of the air cylinder (4) penetrates the rotating plate (10) and is fixedly connected with a supporting block (11).

6. Mobile gantry crane according to claim 5, characterized in that One side of the front surface of the rotating plate (10) is provided with an arc-shaped groove, the front and rear inner parts of the rotating table (2) are rotatably connected with a connecting shaft (13), the surface of the connecting shaft (13) is provided with limiting plates (12) at both sides, the limiting plates (12) are slidably connected with the arc-shaped groove.

7. Mobile gantry crane according to claim 6, characterized in that One end of the connecting shaft (13) is fixedly connected with a screw rod (23), the front and rear inner parts of the rotating table (2) are provided with internal threads, the screw rod (23) is threadedly connected with the internal threads.

8. The mobile gantry crane of claim 6, wherein: The other end of the connecting shaft (13) penetrates the rotating table (2) and is fixedly connected with a handle, one side of the front surface of the rotating plate (10) is fixedly connected with a pull ring (1).

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