Electric hoist grab bucket portal crane

Abstract

The utility model belongs to the technical field of cranes, and particularly relates to an electric hoist grab bucket portal crane which comprises a hoisting portal frame, a rail car mounted on a cross beam of the hoisting portal frame and a first hoist crane mounted on the bottom surface of the rail car, and an upper bearing beam is arranged at the bottom end of the first hoist crane. A lower bearing beam is arranged below the upper bearing beam, a first grab bucket and a second grab bucket are arranged below the lower bearing beam, the upper surface of the first grab bucket and the upper surface of the second grab bucket are rotationally connected with supporting rods correspondingly, the device further comprises a dismounting assembly arranged below the upper bearing beam, and the dismounting assembly comprises a rotating shaft, a gear, a first toothed plate and a second toothed plate. A rotating shaft is arranged below the upper bearing beam, and the surface of the rotating shaft is sleeved with a gear; the first grab bucket and the second grab bucket can be conveniently and quickly disassembled by workers, and the problem that disassembly is inconvenient due to the fact that a plurality of bolts and nuts are fixed is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to an electric hoist grab bucket gantry crane. Background Art

[0002] The electric hoist grab gantry crane is a kind of lifting equipment used with a four-rope grab and a gantry crane. It is mostly used for loading and unloading bulk cargo. The lifting rope and the grab opening and closing rope of the four-rope grab are controlled by double electric hoists respectively, and they cooperate with each other to perform grabbing and lifting operations. The double electric hoists of the common four-rope grab crane are all set on the rail car. When the lifting rope of this lifting equipment is retracted and released, it is necessary to control another electric hoist to synchronously retract and release the opening and closing rope so that the state of the grab will not change. Therefore, this type of equipment has high requirements for the joint control system of the electric hoist to avoid leakage and scattering of cargo due to loose grab when lifting cargo.

[0003] Upon investigation, it was found that the public announcement number: CN217947382U discloses an electric hoist grab gantry crane. This technology discloses "including a lifting gantry for supporting the lifting equipment, a rail car on the lifting gantry, and a lifting hoist installed on the rail car, etc., which can achieve technical effects such as avoiding the tension and tearing of the opening and closing steel cables or the overload and damage of the opening and closing hoist."

[0004] Although this design can achieve technical effects such as preventing the opening and closing steel cables from being torn due to tension or the opening and closing hoist from being damaged due to overload, the grab of the electric hoist grab gantry crane is generally connected by bolts and nuts. Since the grab needs to be rotated during use, the threads are easily worn, which makes it more difficult to rotate the nut. When installing the grab, multiple bolts and nuts are required, which increases the difficulty of replacing the grab when it is damaged.

[0005] Therefore, an electric hoist grab gantry crane is designed to solve the above problems. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an electric hoist grab gantry crane, which is convenient for workers to quickly disassemble the first grab and the second grab, and solves the inconvenience of disassembly by fixing with multiple bolts and nuts.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric hoist grab bucket gantry crane, comprising a lifting gantry, a rail car installed on the lifting gantry crossbeam, and a first lifting hoist installed on the bottom surface of the rail car, an upper support beam is arranged at the bottom end of the first lifting hoist, a lower support beam is arranged below the upper support beam, a first grab bucket and a second grab bucket are arranged below the lower support beam, the upper surfaces of the first grab bucket and the second grab bucket are rotatably connected to support rods respectively, and also includes a disassembly assembly arranged below the upper support beam;

[0008] The disassembly assembly includes a rotating shaft, a gear, a first tooth plate and a second tooth plate. The rotating shaft is arranged below the upper support beam, and a gear is sleeved on the surface of the rotating shaft. The first tooth plate and the second tooth plate are arranged below the upper support beam, and the gear is located between the first tooth plate and the second tooth plate, and the first tooth plate and the second tooth plate are both meshed and connected with the gear.

[0009] As a preferred embodiment of the utility model of an electric hoist grab gantry crane, the disassembly assembly also includes a second side baffle, a first side baffle, a first optical axis and a first ear plate with a hole, one end of the second tooth plate is fixedly connected to the second side baffle, one end of the first tooth plate is fixedly connected to the first side baffle, four first ear plates with holes in a rectangular array are fixedly connected to the bottom surface of the upper support beam, and two first optical axes are fixedly connected to adjacent sides of the second side baffle and the first side baffle respectively.

[0010] As a preferred embodiment of the utility model of an electric hoist grab gantry crane, the disassembly assembly also includes a U-shaped support plate, the bottom surface of the upper support beam is fixedly connected to the U-shaped support plate, the bottom end of the rotating shaft is inserted into a bearing installed in a circular groove provided in the bottom surface of the U-shaped support plate, the rotating shaft and the U-shaped support plate are rotatably connected, and the sides of the first tooth plate and the second tooth plate that are away from each other are both in contact with the inner wall of the U-shaped support plate.

[0011] As a preferred embodiment of the utility model of an electric hoist grab gantry crane, the disassembly assembly also includes a worm wheel and a worm, the surface of the rotating shaft is sleeved with a worm wheel, the worm wheel and the rotating shaft are fixedly connected, the worm wheel is located above the gear, the surface of the worm wheel is meshingly connected with a worm, both ends of the worm respectively pass through the U-shaped support plate and are rotatably connected to the U-shaped support plate, and the two ends of the worm are respectively fixedly connected to limit stop plates.

[0012] As a preferred embodiment of the utility model of an electric hoist grab gantry crane, the surface of the lower support beam is provided with an auxiliary component, the auxiliary component includes an L-shaped plate, a second ear plate with holes and a second optical axis, the upper surface of the first grab and the upper surface of the second grab are respectively fixedly connected with two second ear plates with holes, two plug holes are respectively opened on both sides of the lower support beam, two L-shaped plates are symmetrically arranged on both sides of the lower support beam, two second optical axes are fixedly connected inside each of the L-shaped plates, the second optical axis passes through the second through hole opened in the second ear plate with holes, and is inserted into the inside of the plug hole.

[0013] As a preferred embodiment of the utility model of an electric hoist grab gantry crane, the auxiliary component also includes a first pin, and the upper surface of each L-shaped plate is longitudinally penetrated by a first pin, the first pin is slidably connected to the L-shaped plate, and the first pin is inserted into a through hole opened on the upper surface of the lower support beam.

[0014] Compared with the prior art, the beneficial effects of the utility model are: adding auxiliary components to the present application is conducive to conveniently removing the restrictions on the position between the second perforated ear plate and the lower support beam, thereby facilitating the subsequent disassembly and replacement of the first grab and the second grab, and at the same time, adding a disassembly component is conducive to the convenience of the staff to quickly disassemble the first grab and the second grab, solving the problem of inconvenience in disassembly by fixing with multiple bolts and nuts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the first side baffle and the upper support beam in the utility model;

[0018] Figure 3 For this utility model Figure 2 Sectional view at AA in the middle;

[0019] Figure 4 It is a structural schematic diagram of the U-shaped support plate and the upper support beam in the utility model;

[0020] Figure 5 It is a structural schematic diagram of the first side baffle plate and the first tooth plate in the utility model;

[0021] Figure 6 It is a structural schematic diagram of the lower support beam and L-shaped plate in the utility model;

[0022] In the figure:

[0023] 1. Lifting gantry; 2. Rail car; 3. First lifting hoist; 4. First grab bucket; 5. Second grab bucket; 6. Upper support beam;

[0024] 7. Disassembly assembly; 71. Rotation axis; 72. Worm wheel; 73. Gear; 74. U-shaped support plate; 75. Worm; 76. First side baffle plate; 77. Second side baffle plate; 78. First tooth plate; 79. Second tooth plate; 710. First optical axis; 711. First ear plate with holes;

[0025] 8. Auxiliary component; 81. L-shaped plate; 82. Second ear plate with holes; 83. First latch; 84. Second optical axis; 85. Through hole 1; 86. Connecting hole;

[0026] 9. Lower bearing beam; 10. Support rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1: Figures 1 to 6 As shown:

[0029] An electric hoist grab gantry crane comprises a lifting gantry 1, a rail car 2 mounted on the cross beam of the lifting gantry 1, and a first lifting hoist 3 mounted on the bottom surface of the rail car 2. An upper support beam 6 is arranged at the bottom end of the first lifting hoist 3, a lower support beam 9 is arranged below the upper support beam 6, a first grab 4 and a second grab 5 are arranged below the lower support beam 9, and support rods 10 are rotatably connected to the upper surfaces of the first grab 4 and the second grab 5 respectively.

[0030] In this embodiment: the electric hoist grab gantry crane is a lifting equipment used with a four-rope grab and a gantry crane, and is mostly used for loading and unloading bulk cargo. Upon investigation, the public (announcement) number: CN217947382U discloses an electric hoist grab gantry crane. Although the design can achieve technical effects such as avoiding the tearing of the opening and closing steel cables or the damage of the opening and closing hoist due to overload, the grab of the electric hoist grab gantry crane is generally connected by bolts and nuts. Since the grab needs to be rotated during use, the thread is easily worn, which increases the difficulty of rotating the nut. When installing the grab, multiple bolts and nuts are required, which increases the difficulty of replacing the grab when it is damaged. In order to solve this technical problem, auxiliary components 8 and disassembly components 7 are added on this basis.

[0031] More specifically:

[0032] In combination with the above content: the disassembly assembly 7 includes a rotating shaft 71, a gear 73, a first tooth plate 78 and a second tooth plate 79. The rotating shaft 71 is disposed below the upper support beam 6, and the gear 73 is sleeved on the surface of the rotating shaft 71. The first tooth plate 78 and the second tooth plate 79 are disposed below the upper support beam 6. The gear 73 is located between the first tooth plate 78 and the second tooth plate 79, and the first tooth plate 78 and the second tooth plate 79 are both meshed and connected with the gear 73.

[0033] The disassembly assembly 7 further includes a second side baffle plate 77, a first side baffle plate 76, a first optical axis 710 and a first ear plate with holes 711. One end of the second tooth plate 79 is fixedly connected to the second side baffle plate 77, one end of the first tooth plate 78 is fixedly connected to the first side baffle plate 76, four first ear plates with holes 711 in a rectangular array are fixedly connected to the bottom surface of the upper support beam 6, and two first optical axes 710 are fixedly connected to the adjacent surfaces of the second side baffle plate 77 and the first side baffle plate 76, respectively, and each first optical axis 710 is inserted into a through hole three opened on the surface of the support rod 10 at a corresponding position;

[0034] The disassembly assembly 7 also includes a U-shaped support plate 74, and the bottom surface of the upper support beam 6 is fixedly connected with the U-shaped support plate 74. The bottom end of the rotating shaft 71 is inserted into a bearing installed in a circular groove provided on the bottom surface of the U-shaped support plate 74. The rotating shaft 71 and the U-shaped support plate 74 are rotatably connected, and the sides of the first tooth plate 78 and the second tooth plate 79 that are away from each other are both in contact with the inner wall of the U-shaped support plate 74.

[0035] The rotation of the worm 75 drives the worm wheel 72 to rotate, and the rotation of the worm wheel 72 drives the rotating shaft 71 to rotate synchronously. The rotation of the rotating shaft 71 drives the gear 73 to rotate. When the gear 73 rotates, it drives the first tooth plate 78 and the second tooth plate 79 to move synchronously. The first tooth plate 78 and the second tooth plate 79 slide against the inner wall of the U-shaped support plate 74, thereby driving the first side baffle plate 76 and the second side baffle plate 77 to move in a direction away from each other. The movement of the first side baffle plate 76 and the second side baffle plate 77 respectively drives the corresponding first optical axis 710 to move synchronously. When each first optical axis 710 slides out from the support rod 10 and the first perforated ear plate 711, the damaged first grab 4 and the second grab 5 can be replaced, which is convenient for the staff to quickly disassemble the first grab 4 and the second grab 5, and solves the inconvenience of disassembly by fixing with multiple bolts and nuts.

[0036] It should be noted that: when the first grab bucket 4 and the second grab bucket 5 need to be installed, the support rod 10 and the first perforated ear plate 711 are positioned close to each other, and the rotating gear 73 allows the first optical axis 710 to penetrate the support rod 10 and the first perforated ear plate 711, thereby achieving connection between the support rod 10 and the first perforated ear plate 711;

[0037] The second lifting hoist is installed on the bottom surface of the first lifting hoist 3, and the bottom end of the second lifting hoist is connected to the lower supporting beam 9. By pulling the lower supporting beam 9, the first grab 4 and the second grab 5 are rotated to clamp the material. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0038] Going further:

[0039] In an optional embodiment, the disassembly assembly 7 also includes a worm wheel 72 and a worm 75. The surface of the rotating shaft 71 is sleeved with the worm wheel 72. The worm wheel 72 and the rotating shaft 71 are fixedly connected. The worm wheel 72 is located above the gear 73. The surface of the worm wheel 72 is meshingly connected with the worm 75. The two ends of the worm 75 respectively pass through the U-shaped support plate 74 and are rotatably connected to the U-shaped support plate 74. The two ends of the worm 75 are respectively fixedly connected to the limit stop plate.

[0040] In this embodiment: the rotation of the worm 75 drives the worm wheel 72 to rotate, thereby adjusting the position of the first side baffle 76 and the second side baffle 77, so that the first optical axis 710 slides out from the inside of the support rod 10 and the first perforated ear plate 711, thereby releasing the position restriction between the support rod 10 and the first perforated ear plate 711, and the worm wheel 72 cannot drive the worm 75 to rotate, thereby ensuring the firmness of the connection during the use of the crane.

[0041] Going further:

[0042] In an optional embodiment, an auxiliary component 8 is provided on the surface of the lower support beam 9, and the auxiliary component 8 includes an L-shaped plate 81, a second perforated ear plate 82 and a second optical axis 84. The upper surface of the first grab 4 and the upper surface of the second grab 5 are respectively fixedly connected with two second perforated ear plates 82. Two plug-in holes 86 are respectively opened on both sides of the lower support beam 9. Two L-shaped plates 81 are symmetrically arranged on both sides of the lower support beam 9. Two second optical axes 84 are fixedly connected inside each L-shaped plate 81. The second optical axis 84 passes through the second through hole opened inside the second perforated ear plate 82 and is inserted into the inside of the plug-in hole 86.

[0043] In this embodiment: when the first grab 4 and the second grab 5 are damaged and need to be replaced, an upward force is applied to the first latch 83. When the two first latches 83 slide out of the through holes 85 at the corresponding positions respectively, a force is applied to the L-shaped plate 81 in a direction away from the lower support beam 9, so that the second optical axis 84 can slide inside the plug-in hole 86 until the second optical axis 84 slides out from the second perforated ear plate 82. At this time, the restriction on the position between the second perforated ear plate 82 and the lower support beam 9 is released, thereby facilitating the subsequent disassembly and replacement of the first grab 4 and the second grab 5.

[0044] Going further:

[0045] In an optional embodiment, the auxiliary component 8 also includes a first latch 83, and the upper surface of each L-shaped plate 81 is longitudinally penetrated by the first latch 83. The first latch 83 and the L-shaped plate 81 are slidably connected, and the first latch 83 is inserted into a through hole 85 opened on the upper surface of the lower support beam 9.

[0046] In this embodiment: by allowing the first latch 83 to pass through the L-shaped plate 81 and be inserted into the inside of the through hole 85, the position of the L-shaped plate 81 is fixed. Under the action of gravity, the first latch 83 is not easy to slide out from the inside of the through hole 85. When the second optical axis 84 passes through the second perforated ear plate 82, the second perforated ear plate 82 is supported by the second optical axis 84, thereby ensuring the firmness of the crane during use.

[0047] Working principle: When the first grab 4 and the second grab 5 are damaged and need to be replaced, an upward force is applied to the first latch 83. When the two first latches 83 slide out of the through holes 85 at the corresponding positions, a force is applied to the L-shaped plate 81 in a direction away from the lower support beam 9, so that the second optical axis 84 can slide inside the plug hole 86 until the second optical axis 84 slides out from the second perforated ear plate 82. At this time, the restriction on the position between the second perforated ear plate 82 and the lower support beam 9 is released, so as to facilitate the subsequent disassembly and replacement of the first grab 4 and the second grab 5.

[0048] When the first grab 4 and the second grab 5 need to be replaced after being damaged, the worm gear 75 is rotated. The rotation of the worm gear 75 drives the worm wheel 72 to rotate. The rotation of the worm wheel 72 drives the rotating shaft 71 to rotate synchronously. The rotation of the rotating shaft 71 drives the gear 73 to rotate. When the gear 73 rotates, it drives the first tooth plate 78 and the second tooth plate 79 to move synchronously. The first tooth plate 78 and the second tooth plate 79 slide against the inner wall of the U-shaped support plate 74, thereby driving the first side baffle plate 76 and the second side baffle plate 77 to move in a direction away from each other. The movement of the first side baffle plate 76 and the second side baffle plate 77 respectively drives the corresponding first optical axis 710 to move synchronously. When each first optical axis 710 slides out from the support rod 10 and the first perforated ear plate 711, the damaged first grab 4 and the second grab 5 can be replaced, which is convenient for the staff to quickly disassemble the first grab 4 and the second grab 5, and solves the inconvenience of disassembly by fixing with multiple bolts and nuts.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electric hoist grab gantry crane, comprising a lifting gantry (1), a rail car (2) mounted on a cross beam of the lifting gantry (1), and a first lifting hoist (3) mounted on the bottom surface of the rail car (2), an upper bearing beam (6) being arranged at the bottom end of the first lifting hoist (3), a lower bearing beam (9) being arranged below the upper bearing beam (6), a first grab bucket (4) and a second grab bucket (5) being arranged below the lower bearing beam (9), the upper surfaces of the first grab bucket (4) and the second grab bucket (5) being rotatably connected to support rods (10), characterized in that: It also includes a disassembly assembly (7) arranged below the upper support beam (6); The disassembly assembly (7) comprises a rotating shaft (71), a gear (73), a first tooth plate (78) and a second tooth plate (79); the rotating shaft (71) is arranged below the upper support beam (6); the surface of the rotating shaft (71) is sleeved with a gear (73); the first tooth plate (78) and the second tooth plate (79) are arranged below the upper support beam (6); the gear (73) is located between the first tooth plate (78) and the second tooth plate (79); and the first tooth plate (78) and the second tooth plate (79) are both meshedly connected with the gear (73).

2. The electric hoist grab gantry crane according to claim 1, characterized in that: The disassembly assembly (7) further comprises a second side baffle plate (77), a first side baffle plate (76), a first optical axis (710) and a first perforated ear plate (711); one end of the second tooth plate (79) is fixedly connected to the second side baffle plate (77); one end of the first tooth plate (78) is fixedly connected to the first side baffle plate (76); four first perforated ear plates (711) in a rectangular array are fixedly connected to the bottom surface of the upper support beam (6); and two first optical axes (710) are fixedly connected to adjacent surfaces of the second side baffle plate (77) and the first side baffle plate (76).

3. The electric hoist grab gantry crane according to claim 1, characterized in that: The disassembly assembly (7) further comprises a U-shaped support plate (74), the bottom surface of the upper support beam (6) being fixedly connected to the U-shaped support plate (74), the bottom end of the rotating shaft (71) being inserted into a bearing installed in a circular groove provided in the bottom surface of the U-shaped support plate (74), the rotating shaft (71) and the U-shaped support plate (74) being rotatably connected, and the sides of the first tooth plate (78) and the second tooth plate (79) which are away from each other are both in contact with the inner wall of the U-shaped support plate (74).

4. The electric hoist grab gantry crane according to claim 1, characterized in that: The disassembly assembly (7) further comprises a worm wheel (72) and a worm (75); the surface of the rotating shaft (71) is sleeved with the worm wheel (72); the worm wheel (72) and the rotating shaft (71) are fixedly connected; the worm wheel (72) is located above the gear (73); the surface of the worm wheel (72) is meshingly connected with the worm (75); two ends of the worm (75) respectively penetrate the U-shaped support plate (74) and are rotationally connected to the U-shaped support plate (74); and two ends of the worm (75) are respectively fixedly connected to the limit stop plate.

5. The electric hoist grab gantry crane according to claim 1, characterized in that: An auxiliary component (8) is arranged on the surface of the lower support beam (9), and the auxiliary component (8) comprises an L-shaped plate (81), a second ear plate with holes (82) and a second optical axis (84); the upper surface of the first grab (4) and the upper surface of the second grab (5) are respectively fixedly connected to two second ear plates with holes (82); two plug holes (86) are respectively provided on both sides of the lower support beam (9); two L-shaped plates (81) are symmetrically arranged on both sides of the lower support beam (9); two second optical axes (84) are fixedly connected inside each of the L-shaped plates (81); the second optical axis (84) passes through a second through hole provided inside the second ear plate with holes (82) and is inserted inside the plug hole (86).

6. The electric hoist grab gantry crane according to claim 5, characterized in that: The auxiliary component (8) further comprises a first latch (83), the upper surface of each L-shaped plate (81) having a first latch (83) inserted therethrough in the longitudinal direction, the first latch (83) and the L-shaped plate (81) being slidably connected, and the first latch (83) being inserted into a through hole (85) opened on the upper surface of the lower support beam (9).

Images