Electric hoist portal crane

Abstract

The application relates to the technical field of hoisting equipment, and discloses an electric hoist portal crane, which comprises a bridge, a supporting device and a hoisting device, the supporting device comprises a driving mechanism, a first supporting mechanism and a second supporting mechanism, the first supporting mechanism is fixedly connected to the ground, one end of the bridge is rotationally connected to the first supporting mechanism, the driving mechanism is connected to the first supporting mechanism, the driving mechanism is connected to the bridge, the driving mechanism drives the rotation of the bridge, the second supporting mechanism is fixedly connected to the ground, the other end of the bridge is slidingly connected to the second supporting mechanism, and the hoisting device is connected to the bridge. The application has the effect of improving the convenience of the movement of the crane for articles.

Description

Technical Field

[0001] This application relates to the field of lifting equipment, and in particular to an electric hoist gantry crane. Background Technology

[0002] A gantry crane is a bridge-type crane whose bridge frame is supported on ground rails by outriggers on both sides. Structurally, it consists of a gantry frame, a trolley traveling mechanism, a hoisting trolley, and electrical components. Some gantry cranes have only one outrigger on one side, with the other side supported by a factory building or trestle for operation; these are called semi-gantry cranes. A gantry crane consists of the upper bridge frame, outriggers, and lower crossbeams.

[0003] Currently, the invention patent with announcement number CN209740584U discloses an electric hoist gantry crane, including a main beam, a left support frame, a right support frame, a left slide rail, a right slide rail, a first motor, a second motor, a first left transmission mechanism, a first right transmission mechanism, a third motor, a fourth motor, and an electric hoist. The right end of the left support frame is connected to the left end of the main beam, and the left end of the right support frame is connected to the right end of the main beam. The top end of the first left transmission mechanism is connected to the bottom end of the left support frame, and the bottom end of the first left transmission mechanism is in close contact with the top end of the left slide rail. The output end of the first motor is connected to the input end of the first left transmission mechanism, and the top end of the first right transmission mechanism is connected to the bottom end of the right support frame. The bottom end of the first right transmission mechanism is in close contact with the top end of the right slide rail.

[0004] Regarding the aforementioned technologies, the inventors believe that in factory buildings with limited space, compact equipment, and narrow passageways, it is difficult to guarantee that the crane's support frame has room to slide when using a crane to lift equipment or items, resulting in the drawback of inconvenient crane movement. Summary of the Invention

[0005] To alleviate the problem of inconvenient crane movement, this application provides an electric hoist gantry crane.

[0006] This application provides an electric hoist gantry crane, which adopts the following technical solution:

[0007] An electric hoist gantry crane includes a bridge frame, a support device, and a hoisting device. The support device includes a drive mechanism, a first support mechanism, and a second support mechanism. The first support mechanism is fixedly connected to the ground. One end of the bridge frame is rotatably connected to the first support mechanism. The drive mechanism is connected to the first support mechanism and to the bridge frame, driving the bridge frame to rotate. The second support mechanism is fixedly connected to the ground. The other end of the bridge frame is slidably connected to the second support mechanism. The hoisting device is connected to the bridge frame.

[0008] By adopting the above technical solution, one end of the cable tray is rotatably connected to the first support mechanism, and the other end of the cable tray is slidably connected to the second support mechanism. The first and second support mechanisms work together to support the cable tray. When hoisting items or equipment, the cable tray is driven to rotate by the drive mechanism, thereby moving the hoisting device on the cable tray. After the cable tray has moved, the hoisting device moves the items or equipment along the length of the cable tray, alleviating the problem of inconvenient crane movement.

[0009] Optionally, the first support mechanism includes a first support column fixedly connected to the ground, the cable tray rotatably connected to the first support column, and the drive mechanism fixedly connected to the first support column. The second support mechanism includes a guide rail and multiple second support columns, the second support columns are fixedly connected to the ground, the guide rail is fixedly connected to the end of the second support column away from the ground, and the end of the cable tray away from the first support column is slidably connected to the guide rail.

[0010] By adopting the above technical solution, a first support column is fixedly connected to the ground, one end of the cable tray is rotatably connected to the first support column, the drive mechanism drives the cable tray to rotate around the first support column as the axis, the guide rail is fixedly connected to the ground through multiple second support columns, and the end of the cable tray away from the first support column is slidably connected to the guide rail. The first support column and multiple second support columns work together to support the cable tray.

[0011] Optionally, the drive mechanism includes a drive motor and a connector. The drive motor is fixedly connected to the first support column, the output shaft of the drive motor is fixedly connected to the connector, and the connector is fixedly connected to the cable tray.

[0012] By adopting the above technical solution, the output shaft of the drive motor is connected to the bridge frame through a connector, and the rotation of the output shaft of the drive motor drives the bridge frame to rotate.

[0013] Optionally, the hoisting device includes a lifting trolley and an electric hoist. The lifting trolley includes a connecting beam, a pulley frame, a traveling frame, and two pulleys. The traveling frame is fixedly connected to the side of the connecting beam away from the ground. The pulley frame is fixedly connected to the connecting beam. Both pulleys are rotatably connected to the pulley frame. The two pulleys are located on opposite sides of the length of the connecting beam, and the rotation axis of the pulleys is parallel to the length of the connecting beam. The electric hoist is fixedly connected to the connecting beam. A slide rail is fixedly connected to the bridge frame, and both pulleys are slidably connected to the slide rail.

[0014] By adopting the above technical solution, a lifting trolley is slidably connected to the cable tray, and an electric hoist is connected to the lifting trolley. After the item is hoisted onto the electric hoist, the electric trolley drives the electric hoist to move along the length of the cable tray, thereby moving the hoisted item. By fixing a slide rail to the cable tray, and having both pulleys slidably connected to the slide rail, the stability of the lifting trolley during the movement of the cable tray is improved.

[0015] Optionally, the connecting beam is provided with two sets of auxiliary moving mechanisms, which are located at opposite ends of the connecting beam along its length. Each auxiliary moving mechanism includes a first moving component and an adjusting component. The first moving component includes two connecting rods and two wheels. The two connecting rods are hinged to the two side walls of the connecting beam along its width. The hinge axis of the connecting rods to the connecting beam is parallel to the length of the connecting beam. The two connecting rods and the two wheels are arranged in a one-to-one correspondence. The wheels are rotatably connected to the end of the corresponding connecting rod away from the connecting beam, and the rotation axis of the wheels is parallel to the length of the connecting beam. The adjusting component is connected to the connecting beam, and both connecting rods are connected to the adjusting component. The adjusting component drives the connecting rods to rotate.

[0016] By adopting the above technical solution, two sets of auxiliary moving mechanisms are connected to the connecting beam. During the transportation and installation of the crane trolley, the auxiliary moving mechanisms support the crane trolley and drive it to move, improving the convenience of crane trolley installation. When moving the crane trolley, the adjusting component drives the two connecting rods to move away from the traveling frame. The connecting rods rotate to make the traveling wheels contact the ground. After the traveling wheels contact the ground, the connecting rods continue to rotate until the two pulleys separate from the ground. The four traveling wheels support the crane trolley, thereby improving the stability of crane trolley movement. When the crane trolley moves to the bridge frame, the adjusting component drives the two connecting rods to move closer to the traveling frame, connecting the two pulleys to the slide rails on the bridge frame. There is no need to disassemble the auxiliary moving mechanisms, further improving the convenience of crane trolley installation.

[0017] Optionally, the adjustment assembly includes a power component, a connecting block, and two adjustment rods. The power component is fixedly connected to the connecting beam, and the connecting block is fixedly connected to the power component. The power component drives the connecting block to move in a direction closer to or away from the connecting beam. The two adjustment rods are arranged in a one-to-one correspondence with the two connecting rods. One end of the adjustment rod is hinged to its corresponding connecting rod, and the other end of the adjustment rod is hinged to the end of the connecting block near the connecting beam.

[0018] By adopting the above technical solution, when the power component drives the connecting block to move away from the connecting crossbeam, the connecting block drives the two connecting rods to move away from the traveling frame through the two adjusting rods; when the power component drives the connecting block to move closer to the connecting crossbeam, the connecting block drives the two connecting rods to move closer to the traveling frame through the two adjusting rods.

[0019] Optionally, a second movable component is connected to the connecting rod. The second movable component includes a connecting body and an adjusting wheel. The connecting body is fixedly connected to the connecting rod, and the adjusting wheel is rotatably connected to the connecting body. The rotation axis of the adjusting wheel is perpendicular to the length direction of the connecting beam.

[0020] By adopting the above technical solution, a second movable component is connected to the connecting rod. After the crane trolley is moved to the installation position, the second movable component drives the crane trolley to move along the width direction of the bridge frame, thereby aligning the pulley with the slide rail and further improving the convenience of crane trolley installation.

[0021] Optionally, when the lower end of the traveling wheel is located on the side of the lower end of the pulley closest to the ground, the lower end of the adjusting wheel is located on the side of the lower end of the traveling wheel furthest from the ground; when the lower end of the traveling wheel is located on the side of the lower end of the pulley furthest from the ground, the lower end of the adjusting wheel is located on the side of the lower end of the pulley closest to the ground; when the lower end of the adjusting wheel is located on the side of the lower end of the pulley furthest from the ground, the lower end of the traveling wheel is located on the side of the lower end of the pulley furthest from the ground.

[0022] By adopting the above technical solution, after the crane trolley is moved to the installation position, the piston rod of the electric push cylinder retracts, causing the connecting block to move closer to the connecting crossbeam, thereby causing the two connecting rods to move closer to the traveling frame, so that the four adjusting wheels come into contact with the ground. The crane trolley moves along the width of the bridge frame through the four adjusting wheels, so that the pulleys are aligned with the slide rails. After the pulleys are aligned with the slide rails, the piston rod of the electric push cylinder continues to retract, so that the two pulleys are connected to the slide rails on the bridge frame.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By rotatably connecting one end of the cable tray to the first support mechanism and slidably connecting the other end of the cable tray to the second support mechanism, the first and second support mechanisms work together to support the cable tray; when hoisting items or equipment, the cable tray is driven to rotate by the drive mechanism, thereby moving the hoisting device on the cable tray. After the cable tray has moved, the hoisting device moves the items or equipment along the length of the cable tray, alleviating the problem of inconvenient crane movement;

[0025] 2. By fixing the slide rails to the cable tray, both pulleys are slidably connected to the slide rails, which improves the stability of the lifting trolley during the movement of the cable tray. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a structural schematic diagram of the cable tray portion in an embodiment of this application;

[0028] Figure 3 This is a structural schematic diagram of the lifting trolley part in the embodiments of this application;

[0029] Figure 4 This is a schematic diagram of the auxiliary movement mechanism in an embodiment of this application;

[0030] Figure 5 This is a structural schematic diagram of the second walking component in an embodiment of this application.

[0031] Reference numerals: 100, cable tray; 110, slide rail; 200, support device; 210, drive mechanism; 211, drive motor; 212, connector; 220, first support mechanism; 221, first support column; 230, second support mechanism; 231, guide rail; 232, second support column; 300, hoisting device; 400, hoisting trolley; 410, connecting beam; 420, pulley frame; 430, traveling frame; 440, pulley; 500, electric hoist; 600, auxiliary moving mechanism; 610, first moving component; 611, connecting rod; 612, traveling wheel; 620, adjusting component; 621, electric push cylinder; 622, connecting block; 623, adjusting rod; 630, second moving component; 631, connecting body; 632, adjusting wheel. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] This application discloses an electric hoist gantry crane. (Refer to...) Figure 1 An electric hoist gantry crane includes a support device 200 fixedly connected to the ground, on which a cable tray 100 is mounted, supporting the cable tray 100. A lifting device 300 is mounted on the cable tray 100, used to lift items that need to be moved.

[0034] Reference Figure 1 and Figure 2The support device 200 includes a first support mechanism 220, which includes a vertically arranged first support column 221. The first support column 221 is a cylindrical structure and is fixedly connected to the ground. One end of the cable tray 100 is rotatably connected to the first support column 221. A drive mechanism 210 is mounted on the first support column 221. The drive mechanism 210 includes a drive motor 211, which is fixedly connected to the upper end of the first support column 221. A connector 212 is fixedly connected to the output shaft of the drive motor 211 and is fixedly connected to the cable tray 100.

[0035] The support device 200 also includes a second support mechanism 230, which includes a guide rail 231 for supporting the cable tray 100. The guide rail 231 is fixedly connected to the ground via multiple second support columns 232. The guide rail 231 is an annular guide rail 231. The first support column 221 is located on the axis of the guide rail 231, and the end of the cable tray 100 away from the first support column 221 is slidably connected to the guide rail 231. By rotatably connecting one end of the cable tray 100 to the first support column 221 and slidably connecting the other end of the cable tray 100 to the guide rail 231, the first support column 221 and the multiple second support columns 232 work together to support the cable tray 100. When lifting items, the output shaft of the motor rotates, causing the cable tray 100 to rotate. After the cable tray 100 has moved, the lifting device 300 moves the items or equipment along the length of the cable tray 100, alleviating the problem of inconvenient crane movement.

[0036] Reference Figure 1 and Figure 3The lifting device 300 includes a lifting trolley 400, which includes a horizontally arranged connecting beam 410. The connecting beam 410 has a cuboid structure, and a pulley frame 420 is mounted on the connecting beam 410. The pulley frame 420 is fixedly connected to the middle position along the length of the connecting beam 410. Two pulleys 440 are rotatably connected to the pulley frame 420, located on opposite sides along the length of the connecting beam 410. The rotation axis of the pulleys 440 is parallel to the length of the connecting beam 410. A traveling frame 430 is fixedly connected above the connecting beam 410. A slide rail 110 is fixedly connected to the bridge frame 100. The pulleys 440 of the lifting trolley 400 are grooved wheels, and both pulleys 440 are slidably connected to the slide rail 110, which guides the lifting trolley 400. An electric hoist 500 is fixedly connected to the connecting beam 410. The electric hoist 500 is used to lift the items that need to be moved. After the items are hoisted onto the electric hoist 500, the electric trolley drives the electric hoist 500 to move along the length of the cable tray 100, thereby moving the hoisted items. By fixing the slide rail 110 to the cable tray 100, both pulleys 440 are slidably connected to the slide rail 110, improving the stability of the lifting trolley 400 during the movement of the cable tray 100.

[0037] Reference Figure 3 , Figure 4 and Figure 5 Two sets of auxiliary moving mechanisms 600 are also installed on the connecting crossbeam 410. The two sets of auxiliary moving mechanisms 600 are located at both ends of the connecting crossbeam 410 along its length. When transporting and installing the crane trolley 400, the auxiliary moving mechanisms 600 are used to support the crane trolley 400 and drive the crane trolley 400 to move, thereby improving the convenience of crane trolley installation.

[0038] Reference Figure 3 , Figure 4 and Figure 5 The auxiliary moving mechanism 600 includes a first moving component 610, which includes two oppositely arranged connecting rods 611. The two connecting rods 611 are respectively hinged to the two side walls of the connecting beam 410 in the width direction. The hinge axis of the connecting rods 611 and the connecting beam 410 is parallel to the length direction of the connecting beam 410. A traveling wheel 612 is rotatably connected to the end of the connecting rod 611 away from the connecting beam 410. The rotation axis of the traveling wheel 612 is parallel to the length direction of the connecting beam 410.

[0039] An adjustment assembly 620 is installed between the two connecting rods 611. The adjustment assembly 620 includes a power component. In this embodiment, the power component is an electric push cylinder 621. The electric push cylinder 621 is fixedly connected to the lower end of the connecting beam 410. The piston rod of the electric push rod is fixedly connected to a connecting block 622. An adjustment rod 623 is installed between the connecting block 622 and the connecting rod 611. One end of the adjustment rod 623 is hinged to the side wall of the connecting rod 611, and the other end of the adjustment rod 623 is hinged to the end of the connecting block 622 near the connecting beam 410. When the crane trolley is moved, the electric push cylinder 621 drives the connecting block 622 to move away from the connecting crossbeam 410. The connecting block 622 drives the two connecting rods 611 to move away from the traveling frame 430 through the two adjusting rods 623. The connecting rods 611 rotate to make the traveling wheels 612 contact the ground. After the traveling wheels 612 contact the ground, the connecting rods 611 continue to rotate until the two pulleys 440 separate from the ground. The four traveling wheels 612 support the crane trolley 400, so that the crane trolley 400 can move easily on the ground or the bridge 100.

[0040] Reference Figure 3 , Figure 4 and Figure 5 A second moving component 630 is installed on the connecting rod 611. The second moving component 630 includes a connecting body 631 and an adjusting wheel 632. The connecting body 631 is fixedly connected to the connecting rod 611, and the adjusting wheel 632 is rotatably connected to the connecting body 631. The rotation axis of the adjusting wheel 632 is perpendicular to the length direction of the connecting beam 410. After the crane trolley is moved to the installation position, the piston rod of the electric push cylinder 621 retracts, causing the connecting block 622 to move closer to the connecting crossbeam 410, thereby causing the two connecting rods 611 to move closer to the traveling frame 430, so that the four adjusting wheels 632 come into contact with the ground. The four adjusting wheels 632 move the crane trolley 400 along the width direction of the bridge frame 100, so that the pulley 440 is aligned with the slide rail 110. After the pulley 440 is aligned with the slide rail 110, the piston rod of the electric push cylinder 621 continues to retract, so that the two pulleys 440 are connected to the slide rail 110 on the bridge frame 100. There is no need to disassemble the auxiliary moving mechanism 600, which improves the convenience of crane trolley installation.

[0041] The implementation principle of an electric hoist gantry crane according to an embodiment of this application is as follows: one end of the bridge frame 100 is rotatably connected to the first support mechanism 220, and the other end of the bridge frame 100 is slidably connected to the second support mechanism 230. The first support mechanism 220 and the second support mechanism 230 work together to support the bridge frame 100. When hoisting items or equipment, the bridge frame 100 is driven to rotate by the drive mechanism 210, thereby driving the hoisting device 300 on the bridge frame 100 to move. After the bridge frame 100 has moved, the hoisting device 300 moves the items or equipment along the length of the bridge frame 100, thus alleviating the problem of inconvenient crane movement.

[0042] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An electric hoist gantry crane, characterized in that: The system includes a cable tray (100), a support device (200), and a hoisting device (300). The support device (200) includes a drive mechanism (210), a first support mechanism (220), and a second support mechanism (230). The first support mechanism (220) is fixedly connected to the ground. One end of the cable tray (100) is rotatably connected to the first support mechanism (220). The drive mechanism (210) is connected to the first support mechanism (220) and to the cable tray (100). The drive mechanism (210) drives the cable tray (100) to rotate. The second support mechanism (230) is fixedly connected to the ground. The other end of the cable tray (100) is slidably connected to the second support mechanism (230). The hoisting device (300) is connected to the cable tray (100). The hoisting device (300) includes a lifting trolley (400) and an electric hoist (500). The lifting trolley (400) includes a connecting beam (410), a pulley frame (420), a traveling frame (430), and two pulleys (440). The traveling frame (430) is fixedly connected to the side of the connecting beam (410) away from the ground. The pulley frame (420) is fixedly connected to the connecting beam (410). Both pulleys (440) are rotatably connected. The pulleys (440) are connected to the pulley frame (420), and the two pulleys (440) are located on both sides of the length direction of the connecting beam (410). The rotation axis of the pulleys (440) is parallel to the length direction of the connecting beam (410). The electric hoist (500) is fixedly connected to the connecting beam (410). The bridge frame (100) is fixedly connected to the slide rail (110). Both pulleys (440) are slidably connected to the slide rail (110). Two sets of auxiliary moving mechanisms (600) are provided on the connecting beam (410). The two sets of auxiliary moving mechanisms (600) are located at both ends of the connecting beam (410) along its length. Each auxiliary moving mechanism (600) includes a first moving component (610) and an adjusting component (620). The first moving component (610) includes two connecting rods (611) and two wheels (612). The two connecting rods (611) are respectively hinged to the two side walls of the connecting beam (410) along its width. The hinge axis of the connecting rods (611) and the connecting beam (410) is perpendicular to the axis of the connecting beam (410). The connecting beam (410) is parallel in length direction. The two connecting rods (611) are correspondingly arranged with the two traveling wheels (612). The traveling wheel (612) is rotatably connected to the end of the corresponding connecting rod (611) away from the connecting beam (410). The rotation axis of the traveling wheel (612) is parallel to the length direction of the connecting beam (410). The adjusting component (620) is connected to the connecting beam (410). Both connecting rods (611) are connected to the adjusting component (620). The adjusting component (620) drives the connecting rod (611) to rotate. The adjustment assembly (620) includes a power component, a connecting block (622), and two adjustment rods (623). The power component is fixedly connected to the connecting beam (410), and the connecting block (622) is fixedly connected to the power component. The power component drives the connecting block (622) to move in a direction close to or away from the connecting beam (410). The two adjustment rods (623) are arranged in a one-to-one correspondence with the two connecting rods (611). One end of the adjustment rod (623) is hinged to its corresponding connecting rod (611), and the other end of the adjustment rod (623) is hinged to the end of the connecting block (622) close to the connecting beam (410).

2. The electric hoist gantry crane according to claim 1, characterized in that: The first support mechanism (220) includes a first support column (221) fixedly connected to the ground, the cable tray (100) is rotatably connected to the first support column (221), and the drive mechanism (210) is fixedly connected to the first support column (221). The second support mechanism (230) includes a guide rail (231) and multiple second support columns (232). The second support columns (232) are fixedly connected to the ground, the guide rail (231) is fixedly connected to the end of the second support column (232) away from the ground, and the end of the cable tray (100) away from the first support column (221) is slidably connected to the guide rail (231).

3. The electric hoist gantry crane according to claim 2, characterized in that: The drive mechanism (210) includes a drive motor (211) and a connector (212). The drive motor (211) is fixedly connected to the first support column (221). The output shaft of the drive motor (211) is fixedly connected to the connector (212). The connector (212) is fixedly connected to the bridge frame (100).

4. The electric hoist gantry crane according to claim 1, characterized in that: A second moving component (630) is connected to the connecting rod (611). The second moving component (630) includes a connecting body (631) and an adjusting wheel (632). The connecting body (631) is fixedly connected to the connecting rod (611), and the adjusting wheel (632) is rotatably connected to the connecting body (631). The rotation axis of the adjusting wheel (632) is perpendicular to the length direction of the connecting beam (410).

5. The electric hoist gantry crane according to claim 4, characterized in that: When the lower end of the walking wheel (612) is located on the side of the lower end of the pulley (440) that is close to the ground, the lower end of the adjusting wheel (632) is located on the side of the lower end of the walking wheel (612) that is far from the ground; when the lower end of the walking wheel (612) is located on the side of the lower end of the pulley (440) that is far from the ground, the lower end of the adjusting wheel (632) is located on the side of the lower end of the pulley (440) that is close to the ground; when the lower end of the adjusting wheel (632) is located on the side of the lower end of the pulley (440) that is far from the ground, the lower end of the walking wheel (612) is located on the side of the lower end of the pulley (440) that is far from the ground.

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