Crane for port operation
By setting limit push rods and displacement sensors on the beams of the gantry crane, the hook spacing is accurately positioned, and the design of chutes, rollers and moving beams is used to solve the problem of difficult to accurately judge the hook spacing and friction wear, and efficient and accurate port cargo transfer and long life of machinery are achieved.
Patent Information
- Application Number
- CN202421069830.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The hook spacing of existing gantry cranes is difficult to accurately judge, resulting in inconvenient palletization, and the sliding friction between the hook and the beam leads to wear of the beam, which accelerates parts consumption.
Set up limit push rods and displacement sensors on the cross beams to accurately locate the distance between the two hooks, and reduce friction and wear through the design of the chute, roller and moving beam.
It realizes precise control of hook spacing, improves the efficiency of port cargo transfer, reduces mechanical wear and extends the service life of the equipment.
Smart Images
Figure CN222860971U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of cranes, and in particular relates to a crane used for port operations. Background Art
[0002] Gantry crane is a variation of bridge crane, which is widely used in outdoor cargo yards and material yards of ports. It has a door-like frame structure, with two legs installed under the main beam, which can move on the ground track. This design allows the gantry crane to lift the main beam when not working, allowing vehicles or other mobile equipment to pass from below, thereby improving site utilization. It is an indispensable and important equipment in port cargo yards, and has become a key support for port logistics with its efficient operating capacity and good adaptability. Existing gantry cranes usually have two hooks on the crossbeam to improve work efficiency. The problem is that it is impossible to accurately judge the distance between the two hooks, which brings inconvenience to subsequent stacking. On the other hand, there is sliding friction between the support steel plate connecting the hook and the crossbeam, which wears the crossbeam and accelerates the consumption of parts. Utility Model Content
[0003] In view of the problems existing in the prior art, the utility model provides a crane for port operations, which can accurately locate the distance between two hooks by means of a limit push rod and a displacement sensor arranged on a crossbeam, thereby improving the efficiency of cargo transfer at the port.
[0004] The utility model provides a crane for port operation, which comprises a sliding bar moving along a ground track, a supporting steel frame is fixed above the sliding bar, a connecting block is fixed at the top of the supporting steel frame, two parallel cross beams are erected between the supporting steel frames, two sliding moving beams are arranged on the cross beams, rollers are connected to the two ends of the moving beams, sliding grooves are opened on the opposite sides of the cross beams, the rollers move in the sliding grooves, a lifting rod is arranged below the moving beam, the bottom end of the lifting rod is connected to a hook for lifting and transferring goods, a first displacement sensor is fixed to the bottom surface of the moving beam, and a second displacement sensor is arranged on the inner side surface of the connecting block.
[0005] Furthermore, the supporting steel frame is an isosceles trapezoid that is small at the top and large at the bottom. The supporting steel frame includes a first steel column and a second steel column fixed to the track, and the top ends of the first steel column and the second steel column converge to form an isosceles trapezoid.
[0006] Furthermore, the connection block is connected between the first steel column and the second steel column, and the connection block is parallel to the track.
[0007] Furthermore, the two moving beams are arranged in parallel and connected via a limit push rod, which is vertically connected to the moving beam. The limit push rod can be, for example, a combination of two electric push rods, whose sleeve parts are connected back to back, and whose two free ends are respectively connected to the moving beams. When the limit push rod is working, it pushes the moving beam to move left and right.
[0008] Furthermore, the slide grooves of the cross beam are opened opposite to each other, the slide grooves are T-shaped grooves, and the slide grooves include a longitudinal groove opened along the length direction of the cross beam and a transverse groove perpendicular to the longitudinal groove.
[0009] Furthermore, the rotating shaft of the roller is connected to the moving beam, and the roller rotates in the longitudinal groove while the rotating shaft of the roller moves in the transverse groove, which is used to reduce the friction with the slide groove, saving labor while improving work efficiency.
[0010] Furthermore, there are four lifting rods which are distributed in a square shape, and the lifting rods may be electric lifting rods, for example.
[0011] Furthermore, the first displacement sensor is arranged at the center of the square formed by the lifting rod, the bottom end of the lifting rod is connected to the base plate, and the hook is connected to the base plate. When the lifting rod moves up and down, the first displacement sensor measures the distance the lifting rod rises or falls, thereby accurately obtaining the vertical position of the cargo. The first displacement sensor can be, for example, a laser displacement sensor.
[0012] Furthermore, the second displacement sensor is at the same height as the moving beam. There are two second displacement sensors, which are respectively arranged on opposite sides of the two connecting blocks. When the limit push rod is pushed horizontally to the moving beam to move left and right, the second displacement sensor detects the moving distance of the moving beam, thereby accurately obtaining the horizontal position of the cargo. The second displacement sensor can be, for example, a laser displacement sensor.
[0013] Furthermore, the rails are two and are arranged in parallel and at intervals, and the rails are provided with upward protrusions, which extend along the longitudinal direction of the rails.
[0014] Further, the sliding bar is provided with a notch matching the protrusion of the track, so that the sliding bar slides along the track.
[0015] Beneficial effects of the utility model:
[0016] The utility model provides a crane for port operations. Through the slide grooves provided on the crossbeams, the rollers moving in the slide grooves and the moving beams sliding along the crossbeams, the moving beams can slide smoothly and reduce friction and mechanical wear. Through the lifting rods provided under the moving beams and the hooks connected to the bottom ends of the lifting rods, the vertical lifting of heavy goods can be achieved. Through the first displacement sensor provided on the bottom surface of the moving beams, the vertical position of the goods can be accurately monitored. Through the second displacement sensor provided on the inner side of the connecting block, the horizontal position of the goods can be accurately monitored. The utility model provides a crane for port operations that is energy-saving and labor-saving, takes into account both accuracy and flexibility, and meets the high efficiency requirements of port operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1The utility model is a schematic diagram of the overall structure of a crane used for port operations.
[0018] Figure 2 A schematic diagram of a chute.
[0019] Figure 3 Schematic diagram of the connection between the moving beam and the lifting rod.
[0020] Reference numerals:
[0021] 1-track, 2-slide bar, 3-support steel frame, 301-first steel column, 302-second steel column, 4-connecting block, 5-crossbeam, 6-moving beam, 7-roller, 8-slide groove, 801-longitudinal groove, 802-transverse groove, 9-lifting rod, 10-hook, 11-first displacement sensor, 12-second displacement sensor, 13-limit push rod, 14-bottom plate. DETAILED DESCRIPTION
[0022] The utility model is further described below in conjunction with the accompanying drawings.
[0023] As shown in the figure, the utility model provides a crane for port operations, which includes a sliding bar 2 that moves along a ground track 1, a supporting steel frame 3 is fixed above the sliding bar 2, a connecting block 4 is fixed to the top of the supporting steel frame 3, two parallel beams 5 are erected between the supporting steel frames 3, two sliding moving beams 6 are provided on the beams 5, rollers 7 are connected to both ends of the moving beams 6, and slide grooves 8 are opened on the opposite sides of the beams 5. The rollers 7 move in the slide grooves 8, and a lifting rod 9 is provided below the moving beam 6. The bottom end of the lifting rod 9 is connected to a hook 10 for lifting and transferring goods, a first displacement sensor 11 is fixed to the bottom surface of the moving beam 6, and a second displacement sensor 12 is provided on the inner side surface of the connecting block 4. In specific applications, since the crane includes a sliding bar 2, the sliding bar 2 moves along the track 1, and a supporting steel frame 3 is provided on the sliding bar 2, thus providing a solid structural foundation for the entire crane to ensure stability when lifting heavy objects; since two moving beams 6 are provided on the crossbeam 5, rollers 7 are connected to both ends of the moving beam 6, and a slide groove is opened on the crossbeam 5, and the rollers 7 move in the slide groove, thus allowing the moving beam 6 to slide smoothly and reduce friction and mechanical wear; since a lifting rod 9 is provided under the moving beam 6, and the bottom end of the lifting rod 9 is connected to the hook 10, vertical lifting of heavy goods is achieved; since a first displacement sensor 11 is fixed to the bottom surface of the moving beam 6, and a second displacement sensor 12 is provided on the inner side surface of the connecting block 4, precise lifting of goods is achieved.
[0024] The support steel frame 3 is an isosceles trapezoid with a small top and a large bottom. The support steel frame 3 includes a first steel column 301 and a second steel column 302 fixed to the track 1. The top ends of the first steel column 301 and the second steel column 302 converge to form an isosceles trapezoid. In specific applications, since the support steel frame 3 is an isosceles trapezoid with a small top and a large bottom, the bottom of the support steel frame 3 is wider than the top, so that the support steel frame 3 provides a larger base area when bearing a heavy load, thereby lowering the center of gravity and increasing stability.
[0025] The connecting block 4 is connected between the first steel column 301 and the second steel column 302, and the connecting block 4 is parallel to the track 1. In a specific application, since the connecting block 4 is connected between the first steel column 301 and the second steel column 302 and is parallel to the track 1, the supporting steel frame 3 forms a closed loop as a whole, avoiding stress concentration when carrying heavy objects.
[0026] The two moving beams 6 are arranged in parallel and connected via a limit push rod 13, the limit push rod 13 is vertically connected to the moving beam 6, the limit push rod 13 can be, for example, a combination of two electric push rods, the sleeve parts of the two electric push rods are connected back to back, the two free ends of the electric push rods are respectively connected to the moving beam 6, and when the limit push rod 13 is working, the two moving beams 6 are pushed to move left and right. In a specific application, since the two moving beams 6 are arranged in parallel and connected via the limit push rod 13, the two free ends of the electric push rods are respectively connected to the moving beam 6, so that the two moving beams 6 move synchronously, the position of the moving beam 6 is accurately controlled, and the stability and accuracy of the moving beam 6 during the movement process are ensured.
[0027] The openings of the slide grooves 8 of the cross beam 5 are opposite to each other, and the slide grooves 8 are T-shaped grooves. The slide grooves 8 include a longitudinal groove 801 opened along the length direction of the cross beam 5 and a transverse groove 802 perpendicular to the longitudinal groove 801. The rotating shaft of the roller 7 is connected to the moving beam 6. The roller 7 rotates in the longitudinal groove 801 and the rotating shaft of the roller 7 moves in the transverse groove 802. In a specific application, since the openings of the slide grooves 8 of the cross beam 5 are opposite to each other, the slide grooves 8 are T-shaped grooves, and the slide grooves 8 include a longitudinal groove 801 and a transverse groove 802, the rotating shaft of the roller 7 is connected to the moving beam 6. The roller 7 rotates in the longitudinal groove 801 and the rotating shaft of the roller 7 moves in the transverse groove 802. In this way, the friction with the inner wall of the slide groove 8 is significantly reduced, and the thrust during the operation is reduced. At the same time, the transverse groove 802 plays a limiting role, so that the moving beam 6 moves quickly along the cross beam 5, saving effort while improving work efficiency.
[0028] There are four lifting rods 9, which are distributed in a square shape. For example, the lifting rods 9 can be electric lifting rods. In specific applications, since there are four lifting rods 9, which are distributed in a square shape, multiple lifting rods 9 can jointly bear the weight of the goods, disperse the load, and improve the carrying capacity.
[0029] The first displacement sensor 11 is arranged at the center of the square formed by the lifting rod 9, the bottom end of the lifting rod 9 is connected to the bottom plate 14, and the hook 10 is connected to the bottom plate 14. The first displacement sensor 11 can be, for example, a laser displacement sensor. In a specific application, since the first displacement sensor 11 is arranged at the center of the square formed by the lifting rod 9, the bottom end of the lifting rod 9 is connected to the bottom plate 14, and the hook 10 is connected to the bottom plate 14, when the lifting rod 9 moves up and down, the first displacement sensor 11 measures the distance that the lifting rod 9 rises or falls, thereby accurately obtaining the vertical position of the goods.
[0030] The second displacement sensor 12 is at the same height as the moving beam 6. There are two second displacement sensors 12, which are respectively arranged on the opposite sides of the two connecting blocks 4. The second displacement sensor 12 can be, for example, a laser displacement sensor. In a specific application, since there are two second displacement sensors 12, which are respectively arranged on the opposite sides of the two connecting blocks 4, when the limit push rod 13 is horizontally pushed to the two moving beams 6 to move left and right, the second displacement sensor 12 respectively detects the moving distance of the two moving beams 6, thereby accurately obtaining the horizontal position of the goods.
[0031] The rails 1 are two and arranged in parallel and spaced apart, the rails 1 are provided with an upward protrusion, the protrusion extends in the longitudinal direction of the rails 1, and the sliding bar 2 is provided with a notch matching the protrusion of the rails 1, so that the sliding bar 2 slides along the rails 1. In a specific application, since the rails 1 are two and arranged in parallel and spaced apart, the rails 1 are provided with an upward protrusion, the protrusion extends in the longitudinal direction of the rails 1, and the sliding bar 2 is provided with a notch matching the protrusion of the rails 1, a tight and stable connection between the sliding bar 2 and the rails 1 is ensured, and the sliding bar 2 can be effectively prevented from deviating or detaching from the rails 1 during movement.
[0032] The above describes the preferred embodiments of the present invention, however, the above description is not intended to be limiting. A person skilled in the art may make many changes or modifications to the present invention without departing from the spirit and scope of the present invention. The changes or modifications should be included in the scope of the appended claims.
Claims
1. A crane for port operations, characterized in that: The invention comprises a sliding bar (2) which moves along a ground track (1), a supporting steel frame (3) being fixed above the sliding bar (2), a connecting block (4) being fixed at the top of the supporting steel frame (3), two parallel cross beams (5) being arranged between the supporting steel frames (3), two sliding moving beams (6) being arranged on the cross beams (5), rollers (7) being connected at both ends of the moving beams (6), a sliding groove (8) being opened on the opposite side of the cross beam (5), the rollers (7) moving in the sliding groove (8), a lifting rod (9) being arranged below the moving beam (6), the bottom end of the lifting rod (9) being connected to a hook (10) for lifting and transferring goods, a first displacement sensor (11) being fixed on the bottom surface of the moving beam (6), and a second displacement sensor (12) being arranged on the inner side surface of the connecting block (4).
2. The crane according to claim 1, characterized in that: The supporting steel frame (3) is an isosceles trapezoid that is smaller at the top and larger at the bottom. The supporting steel frame (3) comprises a first steel column (301) and a second steel column (302) that are fixed to the track (1). The top ends of the first steel column (301) and the second steel column (302) converge to form an isosceles trapezoid.
3. The crane according to claim 1 or 2, characterized in that: The two movable beams (6) are arranged in parallel and connected via a limit push rod (13), and the limit push rod (13) is vertically connected to the movable beam (6).
4. The crane according to claim 1, characterized in that: The slide groove (8) of the cross beam (5) has openings facing each other, the slide groove (8) is a T-shaped groove, and the slide groove (8) comprises a longitudinal groove (801) opened along the length direction of the cross beam (5) and a transverse groove (802) perpendicular to the longitudinal groove (801).
5. The crane according to claim 4, characterized in that: The rotating shaft of the roller (7) is connected to the moving beam (6), and the roller (7) rotates in the longitudinal groove (801) while the rotating shaft of the roller (7) moves in the transverse groove (802).
6. The crane according to claim 1, characterized in that: There are four lifting rods (9) distributed in a square shape.
7. The crane according to claim 1, characterized in that: The first displacement sensor (11) is arranged at the center of a square formed by the lifting rod (9); the bottom end of the lifting rod (9) is connected to a bottom plate (14); and the hook (10) is connected to the bottom plate (14).
8. The crane according to claim 1, characterized in that: The second displacement sensor (12) is at the same height as the moving beam (6), and there are two second displacement sensors (12), which are respectively arranged on opposite sides of the two connecting blocks (4).
9. The crane according to claim 1, characterized in that: The rails (1) are two and are arranged in parallel and at intervals. The rails (1) are provided with upward protrusions, which extend in the longitudinal direction of the rails (1).
10. The crane according to claim 9, characterized in that The sliding bar (2) is provided with a recess that matches the protrusion of the track (1), so that the sliding bar (2) slides along the track (1).