Lifting equipment of portal crane

Abstract

The utility model provides hoisting equipment of a portal crane, which comprises a first bottom beam and a second bottom beam which are symmetrical to each other, two groups of first traveling wheels and two groups of second traveling wheels are respectively arranged on the lower sides of the first bottom beam and the second bottom beam, and the first traveling wheels and the second traveling wheels which correspond to each other in position are in transmission connection through transmission shafts; the upper side of the first bottom beam and the upper side of the second bottom beam are connected through first I-shaped steel and second I-shaped steel, a motor fixing frame is arranged on the side portion of the first I-shaped steel and fixedly connected with a shell of a driving motor, transmission chain wheels are arranged on the driving motor and one transmission shaft respectively, and the two transmission chain wheels are connected through a transmission chain. According to the lifting equipment of the portal crane, the driving motor of the walking wheel is mounted in the middle of the first I-shaped steel and is driven through the chain instead of being directly mounted on the wheel, so that the situation that the wheel is directly weighed, and the driving motor protrudes outwards and collides can be avoided.

Description

Technical Field

[0001] The utility model relates to a lifting device, in particular to a lifting device of a gantry crane. Background Art

[0002] A gantry crane, also known as a gantry crane, is a variation of the bridge crane. It is primarily used for loading and unloading outdoor cargo yards, material yards, and bulk cargo. Gantry cranes offer high site utilization, a large operating range, wide adaptability, and strong versatility, making them widely used in port cargo yards. Their metal structure resembles a gate-shaped frame, with two legs mounted under the load-bearing main beam, allowing them to travel directly on ground tracks. The main beam can have cantilever beams extending outward at either end. Structurally, a gantry crane primarily consists of a gantry, a trolley mechanism, a hoisting trolley, and electrical components. The hoisting trolley is the crane's lifting equipment, primarily comprising the trolley mechanism, hoist drum, and hook. For example, Chinese Patent CN221500376U discloses a lightweight trolley for a general-purpose bridge crane. However, these lifting mechanisms often feature drive motors fixed directly to the outside of the trolley's wheels. This protruding position of the drive motors can damage the motors and wheels in the event of an accidental collision.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting device for a gantry crane in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A lifting device of a gantry crane includes two groups of mutually symmetrical first bottom beams and second bottom beams, two groups of first running wheels and two groups of second running wheels are respectively provided on the lower sides of the first bottom beam and the second bottom beam, and the first running wheels and the second running wheels in corresponding positions are connected through a transmission shaft; the upper sides of the first bottom beam and the second bottom beam are connected through a first I-beam and a second I-beam, the first I-beam and the second I-beam are parallel to each other, the first I-beam is close to the first running wheels, the web of the second I-beam coincides with the symmetry axis of the first bottom beam and the second bottom beam, a motor fixing frame is provided on the side of the first I-beam, the motor fixing frame is fixedly connected to the housing of the driving motor, a transmission sprocket is respectively provided on the driving motor and one of the transmission shafts, and the two transmission sprockets are connected by a transmission chain; an electric hoist is installed on the second I-beam, and the steel wire rope of the electric hoist is connected to the lifting sling.

[0007] The first bottom beam and the second bottom beam both comprise rectangular steel, the bottom surface of which is provided with a mounting notch, and the lower sides of the first and second running wheels extend from the mounting notch to match with the wheel tracks.

[0008] A sealing plate is set at both ends of the rectangular steel, a buffer is connected to the middle of the sealing plate, an L-shaped connecting plate is set below the buffer, the vertical part of the L-shaped connecting plate is connected to the sealing plate, and the horizontal part of the L-shaped connecting plate is connected to two sets of guide wheels. The central axis of the guide wheel is perpendicular to the central axis of the first walking wheel and the second walking wheel, and the guide wheel cooperates with both sides of the wheel track.

[0009] The lower sides of the lower wing plates of the first I-beam and the second I-beam are respectively connected to the first mounting plates, the upper sides of the first bottom beam and the second bottom beam are respectively connected to the second mounting plates, and the first mounting plates and the second mounting plates are connected by bolts; the first mounting plate is connected to the first I-beam / the second I-beam through a plurality of first vertical side plates, and the first vertical side plates are perpendicular to the first mounting plate; the second mounting plate is connected to the first bottom beam / the second bottom beam through a plurality of second vertical side plates, and the second vertical side plates are perpendicular to the second mounting plate.

[0010] Two first supporting links are connected to the lower side of the lower wing plate of the first I-beam. The two first supporting links are connected by a second supporting link. A mounting groove is provided on the lower side of the second supporting link, and a lighting lamp is installed in the mounting groove.

[0011] Compared to existing technologies, the present invention offers the following advantages: It provides a gantry crane hoisting device in which the travel wheel drive motor is mounted in the middle of the first I-beam, driven by a chain, rather than directly on the wheel. This prevents the wheel from bearing weight directly and potentially causing the drive motor to bump against the outer protrusion. Specifically, during use, the drive motor rotates the transmission sprocket, which in turn drives the drive shaft and travel wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model (1).

[0013] Figure 2 This is a structural diagram of the utility model (II).

[0014] In the figure: 1. First bottom beam; 2. Second bottom beam; 3. First travel wheel; 4. Second travel wheel; 5. Drive shaft; 6. First I-beam; 7. Second I-beam; 8. Motor mounting bracket; 9. Drive motor; 10. Electric hoist; 11. Lifting device; 12. Cover plate; 13. Buffer; 14. Guide wheel; 15. First vertical side panel; 16. Second vertical side panel. DETAILED DESCRIPTION

[0015] The technical solution of the present utility model is further described in detail below through specific implementation methods.

[0016] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, they can understand the specific meanings of the above terms in this utility model according to specific circumstances and select appropriate connection, setting or installation methods in the prior art.

[0017] like Figure 1-2 As shown, a lifting device of a gantry crane includes two sets of mutually symmetrical first bottom beams 1 and second bottom beams 2, two sets of first running wheels 3 are provided on the lower side of the first bottom beam 1, and two sets of second running wheels 4 are provided on the lower side of the second bottom beam 2, and the first running wheels 3 and the second running wheels 4 in corresponding positions are connected by a transmission shaft 5; the upper sides of the first bottom beam 1 and the second bottom beam 2 are connected by a first I-beam 6 and a second I-beam 7, the first I-beam 6 and the second I-beam 7 are parallel to each other, the first I-beam 6 is close to the first running wheel 3, and the web of the second I-beam 7 is aligned with the first bottom beam 1 and the second bottom beam 2 coincide with the symmetry axes of the first I-beam 6, a motor fixing bracket 8 is provided on the side of the first I-beam 6, the motor fixing bracket 8 is fixedly connected to the housing of the drive motor 9, and a drive sprocket is provided on the drive motor 9 and one of the transmission shafts 5, respectively, and the two drive sprockets are connected by a transmission chain; an electric hoist 10 is installed on the second I-beam 7, and the steel wire rope of the electric hoist 10 is connected to the lifting sling 11. Specifically, the electric hoist is a common hoist product in the prior art. During use, the second I-beam serves as a moving track of the electric hoist, and the upper side of the electric hoist moves along the lower wing plate of the second I-beam.

[0018] The hoisting equipment of this gantry crane installs the driving motor for the running wheels in the middle of the first I-beam, driven by a chain, rather than directly on the wheels. This prevents the wheels from bearing weight directly and potentially causing collisions with the protruding drive motor. Specifically, during operation, the first and second running wheels engage the rails on the gantry, which can adopt a common gantry structure in the prior art. The rails on the gantry can be I-beam rails. The drive motor drives the transmission sprocket, which in turn drives the drive shaft and running wheels.

[0019] In one embodiment, the first bottom beam 1 and the second bottom beam 2 both include rectangular steel, and a mounting notch is provided on the bottom surface of the rectangular steel. The lower sides of the first running wheel 3 and the second running wheel 4 extend from the mounting notch to cooperate with the wheel track.

[0020] In one embodiment, a sealing plate 12 is provided at both ends of the rectangular steel, a buffer 13 is connected to the middle of the sealing plate 12, an L-shaped connecting plate is provided below the buffer 13, the vertical part of the L-shaped connecting plate is connected to the sealing plate 12, and the horizontal part of the L-shaped connecting plate is connected to two sets of guide wheels 14, the central axis of the guide wheel 14 is perpendicular to the central axis of the first walking wheel 3 and the second walking wheel 4, and the guide wheel 14 cooperates with both sides of the wheel track.

[0021] In one embodiment, the lower sides of the lower wing plates of the first I-beam 6 and the second I-beam 7 are respectively connected to the first mounting plates, and the upper sides of the first bottom beam 1 and the second bottom beam 2 are respectively connected to the second mounting plates, and the first mounting plates and the second mounting plates are connected by bolts; the first mounting plate is connected to the first I-beam 6 / the second I-beam 7 through a plurality of first vertical side plates 15, which can be connected by welding, and the first vertical side plates 15 are perpendicular to the first mounting plates; the second mounting plate is connected to the first bottom beam 1 / the second bottom beam 2 through a plurality of second vertical side plates 16, which can be connected by welding, and the second vertical side plates 16 are perpendicular to the second mounting plates, thereby fully ensuring the stability of the connection structure.

[0022] In one embodiment, two first support links are connected to the underside of the lower wing plate of the first I-beam 6. The two first support links are connected by a second support link. A mounting slot is provided on the underside of the second support link, in which a lamp is installed for nighttime illumination. Specifically, the lamp, its lighting circuit, and its control circuit all utilize existing technologies.

[0023] The above embodiments can be combined with each other.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A lifting device for a gantry crane, characterized in that: The sprocket wheel is annularly connected to the upper frame, and the sprocket wheel is axle up and down, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 2 / 3 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 1 / 2 second from top to bottom, and the sprocket is rotated at a speed of 2. The lifting device of the gantry crane according to claim 1, characterized in that: The first bottom beam and the second bottom beam both comprise rectangular steel, the bottom surface of which is provided with a mounting notch, and the lower sides of the first and second running wheels extend from the mounting notch to match with the wheel tracks.

3. The hoisting device of the gantry crane according to claim 2, characterized in that: A sealing plate is set at both ends of the rectangular steel, a buffer is connected to the middle of the sealing plate, an L-shaped connecting plate is set below the buffer, the vertical part of the L-shaped connecting plate is connected to the sealing plate, and the horizontal part of the L-shaped connecting plate is connected to two sets of guide wheels. The central axis of the guide wheel is perpendicular to the central axis of the first walking wheel and the second walking wheel, and the guide wheel cooperates with both sides of the wheel track.

4. The hoisting device of the gantry crane according to claim 3, characterized in that: The lower sides of the lower wing plates of the first I-beam and the second I-beam are respectively connected to the first mounting plates, the upper sides of the first bottom beam and the second bottom beam are respectively connected to the second mounting plates, and the first mounting plates and the second mounting plates are connected by bolts; the first mounting plate is connected to the first I-beam / the second I-beam through a plurality of first vertical side plates, and the first vertical side plates are perpendicular to the first mounting plate; the second mounting plate is connected to the first bottom beam / the second bottom beam through a plurality of second vertical side plates, and the second vertical side plates are perpendicular to the second mounting plate.

5. The hoisting device of the gantry crane according to claim 4, characterized in that: Two first supporting links are connected to the lower side of the lower wing plate of the first I-beam. The two first supporting links are connected by a second supporting link. A mounting groove is provided on the lower side of the second supporting link, and a lighting lamp is installed in the mounting groove.

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