Modularized portal frame hoisting and carrying device

Abstract

The embodiment of the invention provides a modular portal frame hoisting and carrying device, and relates to the technical field of portal frames. A modular portal frame hoisting and carrying device comprises a bottom beam seat, an outer beam frame is longitudinally fixed to the top of the bottom beam seat, and an inner cavity of the outer beam frame is slidably connected with an inner beam frame; a top sliding beam is transversely fixed to the top of the inner beam frame, a sliding rail groove is transversely formed in the top sliding beam, the top sliding beam is connected with a sliding rail frame in a sliding mode, and an electric hoist with a lifting appliance is hung at the bottom of the sliding rail frame. Limiting and blocking assemblies which are in limiting protection with the electric hoist are arranged on the two sides of the top sliding beam, each limiting and blocking assembly comprises a stepping motor fixed to the top sliding beam, an adjusting assembly used for overall positioning is arranged in an inner cavity of the bottom beam base, and each adjusting assembly comprises a double-end air cylinder transversely fixed in the bottom beam base. Based on a modular framework which is quickly disassembled and assembled, the goods limiting and blocking and flexible moving effects on the portal frame are achieved.

Description

Technical Field

[0001] This invention belongs to the field of gantry crane technology, and particularly relates to a modular gantry crane lifting and handling device. Background Technology

[0002] Gantry cranes are a new type of small lifting gantry crane developed to meet the needs of daily production, such as handling equipment, loading and unloading goods in and out of warehouses, lifting and repairing heavy equipment, and transporting materials. They are suitable for mold manufacturing, auto repair shops, mines, civil construction sites, and other occasions requiring lifting. They are commonly used in construction to transport materials and transport construction workers up and down, thus achieving mechanization of lifting.

[0003] In the existing technology (patent application CN219194271U, entitled "A Chain-Type Gantry Frame"), the gantry frame has a compact structure and is easy to use for lifting and transporting power system manhole covers, which can reduce the labor intensity of workers and save labor costs. However, in the process of implementing this technical solution, at least the following problems were found in the existing technology:

[0004] Gantry cranes are used in cargo handling. However, most gantry cranes currently in use are welded and assembled, and cannot be based on a modular architecture that allows for quick assembly and disassembly. This makes them unsuitable for short-distance handling scenarios, unable to meet the cargo handling needs in specific situations where large forklifts cannot be used, and also unable to be quickly assembled and disassembled, making them inconvenient for maintenance and upgrades. Summary of the Invention

[0005] This application aims to at least address the technical problem existing in the prior art that it cannot achieve cargo restraint and flexible movement of gantry cranes based on a modular architecture that allows for quick assembly and disassembly. To this end, this application proposes a modular gantry crane lifting and handling device.

[0006] To achieve the above objectives, the specific technical solution of the present invention is as follows:

[0007] A modular gantry crane lifting and handling device includes a bottom beam base, an outer beam frame is longitudinally fixed on the top of the bottom beam base, and an inner beam frame is slidably connected to the inner cavity of the outer beam frame;

[0008] The top of the inner beam frame is fixed horizontally with a top sliding beam, and a slide rail groove is opened horizontally on the top sliding beam, and a slide rail frame is slidably connected thereto. An electric hoist with a lifting device is hung at the bottom of the slide rail frame.

[0009] Both sides of the top sliding beam are provided with limiting components for limiting and protecting the electric hoist, and the limiting components include stepper motors fixed on the top sliding beam. The inner cavity of the bottom beam seat is provided with an adjustment component for overall positioning, and the adjustment component includes a double-headed cylinder horizontally fixed in the bottom beam seat.

[0010] Preferably, the limiting assembly further includes a main bevel gear fixed on the output shaft of the stepper motor, and a driven bevel gear meshes with the bottom of the main bevel gear. The inner cavity of the driven bevel gear is horizontally fixedly connected to a positive and negative lead screw that rotatably engages with the top slide beam. Both sides of the positive and negative lead screws are threadedly connected to lead screw sleeves. The top of the lead screw sleeve is fixedly connected to a slide frame that slidably engages with the top slide beam. Both sides of the slide frame are fixedly connected to bent arms. The inner side of the bent arms is fixedly connected to a limiting frame that limits and protects the electric hoist.

[0011] Preferably, the adjustment assembly further includes trapezoidal seats fixed at both ends of the double-headed cylinder and slidingly engaged with the bottom beam seat. The trapezoidal seats have teeth arranged on their inclined surfaces. Gears mesh at the bottom of the teeth, and a bracket that penetrates the bottom beam seat is rotatably connected to the outside of the gears. A drive motor is fixedly connected to the bottom of the bracket via a support, and a Mecanum wheel for walking is fixedly connected to the output shaft of the drive motor.

[0012] Preferably, a lifting cylinder is fixedly connected to the outer side of the outer beam frame, and the piston rod of the lifting cylinder is fixedly connected to the inner beam frame.

[0013] Preferably, the bottom beam seat and the outer beam frame, as well as the inner beam frame and the top sliding beam, are fixed by quick-release screws.

[0014] Preferably, the top of the top sliding beam has horizontal sliding grooves on both sides that slide with the slide frame, and the curved arm has a weight reduction groove.

[0015] Preferably, the limiting frame adopts a cross-shaped design, and a flexible protective pad is provided on the inner side of the limiting frame.

[0016] Preferably, the top array inside the bottom beam seat is fixed with a horizontal slide bar, and the top array of the trapezoidal seat is provided with a horizontal guide rail that slides with the horizontal slide bar.

[0017] Preferably, a vertical slide bar is fixedly connected to the side of the bottom beam seat, and a vertical guide rail is provided on the outer side of the bracket to slide with the vertical slide bar.

[0018] Preferably, the bottom of the base beam seat has through openings on both sides for connecting the drive motor and the Mecanum wheel.

[0019] The modular gantry crane lifting and handling device of the present invention has the following advantages:

[0020] 1. This modular gantry crane lifting and handling device first controls a stepper motor to drive the main bevel gear and the driven bevel gear to rotate successively. The driven bevel gear drives the screw sleeves on both sides of the positive and negative screws to move inward. The two sets of screw sleeves drive the two curved arms to move inward through two sets of slides. The two curved arms drive two sets of limit frames to achieve the effect of limiting and blocking the goods in the suspended state of the crane, so as to prevent the goods in the suspended state from shaking or even falling due to external forces, thereby improving the safety of the gantry crane during use and the stability of the goods during the lifting process.

[0021] 2. This modular gantry crane lifting and handling device first controls two double-headed cylinders to synchronously drive the trapezoidal seat to slide outward. The trapezoidal seat drives the bracket on the gear to move downward through the teeth. The bracket drives the drive motor and Mecanum wheel to move downward. Then, the drive motor that has moved to the position drives the Mecanum wheel to move, which meets the overall flexibility movement requirements of the gantry crane. There is no need for manual pushing of the gantry crane, which frees up manpower and improves the efficiency of cargo handling.

[0022] 3. In this modular gantry crane lifting and handling device, the handwheel first drives the threaded rod to move down in the threaded seat, and the threaded rod drives the suction plate to move down to adhere and position it on the ground. The suction plate simultaneously drives the anti-slip block and anti-slip head on the horizontal plate to move down, further preventing slippage and stopping the ground, so as to achieve a stable support effect for the gantry crane in a static state, so as to prevent it from shifting or even tipping over. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a front view of a modular gantry crane lifting and handling device according to the present invention;

[0025] Figure 2 This is a side view of the structure of a modular gantry crane lifting and handling device according to the present invention;

[0026] Figure 3 This is a bottom view of the structure of a modular gantry lifting and handling device according to the present invention;

[0027] Figure 4 This is an exploded view of the modular gantry crane lifting and handling device of the present invention;

[0028] Figure 5 This is a side sectional view of the top sliding beam and limiting assembly structure of the present invention;

[0029] Figure 6 This is a partial bottom view of the barrier component structure of the present invention;

[0030] Figure 7 This is a top view of the adjustment component structure in its moving state according to the present invention;

[0031] Figure 8 This is a bottom view of the static state of the adjustment component structure of the present invention;

[0032] Figure 9 This is a partial exploded bottom view of the structure of the adjustment component of the present invention;

[0033] Figure 10 This is a bottom view of the bottom beam base and support assembly structure of the present invention;

[0034] Figure 11 This is a top view of the support component structure of the present invention.

[0035] The markings in the diagram are as follows: 1. Bottom beam seat; 2. Outer beam frame; 3. Inner beam frame; 4. Top slide beam; 5. Slide rail frame; 6. Electric hoist; 71. Stepper motor; 72. Main bevel gear; 73. Driven bevel gear; 74. Positive and negative lead screw; 75. Lead screw sleeve; 76. Slide carriage; 77. Bent arm; 78. Limiting bracket; 81. Double-headed cylinder; 82. Trapezoidal seat; 83. Tooth; 84. Gear; 85. Bracket; 86. Drive motor; 87. Mecanum wheel; 91. Threaded seat; 92. Threaded rod; 93. Handwheel; 94. Adsorption plate; 95. Horizontal plate; 96. Anti-slip block; 97. Anti-slip head; 10. Lifting cylinder; 11. Quick-release screw; 12. Horizontal slide groove; 13. Horizontal slide bar; 14. Horizontal guide rail; 15. Vertical slide bar; 16. Vertical guide rail. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0037] like Figures 1-11 As shown, a modular gantry crane lifting and handling device of the present invention includes a bottom beam seat 1, an outer beam frame 2 is longitudinally fixed on the top of the bottom beam seat 1, and an inner beam frame 3 is slidably connected to the inner cavity of the outer beam frame 2. A lifting cylinder 10 is fixedly connected to the outer side of the outer beam frame 2, and the piston rod of the lifting cylinder 10 is fixedly connected to the inner beam frame 3. According to the stroke height of the lifting device on the two electric hoists 6, the two lifting cylinders 10 can also be controlled to open synchronously and drive the two inner beam frames 3 to slide upward and slide downward within the two outer beam frames 2, thereby changing the lifting height of the two electric hoists 6 on the top sliding beam 4. The bottom beam seat 1 and the outer beam frame 2, as well as the inner beam frame 3 and the top sliding beam 4, are all fixed by quick-release screws 11, realizing the overall modular quick disassembly and assembly of the gantry crane, which is conducive to maintenance and upgrade work.

[0038] A top sliding beam 4 is horizontally fixed at the top of the inner beam frame 3, and a slide rail groove is horizontally opened on the top sliding beam 4, which is slidably connected to a slide rail frame 5. An electric hoist 6 with a lifting device is hung at the bottom of the slide rail frame 5. Limiting components that limit and protect the electric hoist 6 are set on both sides of the top sliding beam 4. The limiting components include a stepper motor 71 fixed on the top sliding beam 4, which achieves the effect of limiting and blocking the goods in the suspended state, so as to prevent the goods in the suspended state from shaking or even falling due to external forces, thereby improving the safety of the gantry frame during use and the stability of the goods during the lifting process. The inner cavity of the bottom beam seat 1 is equipped with an adjustment component for overall positioning. The adjustment component includes a double-headed cylinder 81 horizontally fixed in the bottom beam seat 1, which meets the overall flexible movement requirements of the gantry frame, eliminating the need for manual pushing of the gantry frame, freeing up manpower, and improving the efficiency of goods handling.

[0039] like Figures 4-9 As shown, the limiting assembly also includes a main bevel gear 72 fixed on the output shaft of the stepper motor 71, and a driven bevel gear 73 meshes with the bottom of the main bevel gear 72. First, the stepper motor 71 is controlled to drive the main bevel gear 72 and the driven bevel gear 73 to rotate successively. A forward and reverse lead screw 74, which rotatably engages with the top sliding beam 4, is horizontally fixedly connected to the inner cavity of the driven bevel gear 73. Both sides of the forward and reverse lead screw 74 are threaded with lead screw sleeves 75. The driven bevel gear 73 drives the lead screw sleeves 75 on both sides of the forward and reverse lead screw 74 to move inward, thus controlling the rotation of the lead screw. The top of the rod sleeve 75 is fixedly connected to a slide frame 76 that slides with the top slide beam 4, and both sides of the slide frame 76 are fixedly connected to curved arms 77. The two sets of screw sleeves 75 drive the two curved arms 77 to move inward through the two sets of slide frames 76. The inner side of the curved arms 77 is fixedly connected to a limit bracket 78 that limits and protects the electric hoist 6. The two curved arms 77 drive the two sets of limit brackets 78 to achieve the effect of limiting and blocking the goods in the suspended state, so as to prevent the goods in the suspended state from shaking or even falling due to external forces.

[0040] Both sides of the top of the top sliding beam 4 are provided with transverse sliding grooves 12 that slide with the slide frame 76, which play a role in limiting the sliding of the slide frame 76 and improving the sliding stability of the slide frame 76. The curved arm 77 is provided with a weight reduction groove to reduce the overall weight of the curved arm 77 and facilitate the smooth sliding displacement of the curved arm 77. The limit frame 78 adopts a cross-shaped design and the inner side of the limit frame 78 is provided with a flexible protective pad to provide flexible limit protection for the goods in the suspended state to avoid collision damage to the surface of the goods.

[0041] The adjustment assembly also includes trapezoidal seats 82 fixed at both ends of the double-headed cylinders 81. First, the two double-headed cylinders 81 are controlled to synchronously drive the trapezoidal seats 82 to slide outward and slide in cooperation with the bottom beam seat 1. The inclined surface array of the trapezoidal seats 82 is provided with teeth 83. The bottom of the teeth 83 is engaged with a gear 84. The outer side of the gear 84 is rotatably connected to a bracket 85 that is in through-fit with the bottom beam seat 1. The trapezoidal seats 82 drive the bracket 85 on the gear 84 to move downward through the teeth 83. The bottom of the bracket 85 is fixedly connected to a drive motor 86 through a support. The output shaft of the drive motor 86 is fixedly connected to a Mecanum wheel 87 for walking and moving. The bracket 85 drives the drive motor 86 and the Mecanum wheel 87 to move downward. Then, the drive motor 86, which has moved to the position, drives the Mecanum wheel 87 to move, thus meeting the overall flexibility movement requirements of the gantry frame.

[0042] A horizontal slide bar 13 is fixedly arranged in the top array inside the bottom beam seat 1, and a horizontal guide rail 14 is provided in the top array of the trapezoidal seat 82 to slide and cooperate with the horizontal slide bar 13, which plays a role in sliding support between the trapezoidal seat 82 and the bottom beam seat 1, thereby improving the sliding stability of the trapezoidal seat 82 in the bottom beam seat 1. A vertical slide bar 15 is fixedly connected to the side inside the bottom beam seat 1, and a vertical guide rail 16 is provided in the outer side of the bracket 85 to slide and cooperate with the vertical slide bar 15, thereby playing a role in sliding support between the bracket 85 and the bottom beam seat 1, thereby improving the lifting stability of the bracket 85 in the bottom beam seat 1. Through openings are provided on both sides of the bottom of the bottom beam seat 1 to cooperate with the drive motor 86 and the Mecanum wheel 87, which facilitates the extension and retraction of the drive motor 86 and the Mecanum wheel 87.

[0043] like Figures 10-11 As shown, during the lifting and handling of goods using a gantry crane, the telescopically adjustable Mecanum wheels 87 are used to move and station the gantry crane. When the gantry crane is stationary while lifting goods, it cannot provide stable support, making it susceptible to tilting or even toppling due to external forces. A support assembly for use with the adjustment components is provided on the outer side of the bottom beam seat 1. The support assembly includes a threaded seat 91 fixed to the outer side of the bottom beam seat 1. A threaded rod 92 is internally threaded onto the threaded seat 91, and a handwheel 93 with a handle is fixedly connected to the top of the threaded rod 92. The handwheel 93 drives the threaded rod 92 to move downward within the threaded seat 91. The bottom of the threaded rod 92 is equipped with an adsorption plate 94. The threaded rod 92 drives the adsorption plate 94 to move downward and adsorb and position itself on the ground surface. A horizontal plate 95 is fixedly connected to the outside of the adsorption plate 94. Anti-slip blocks 96 and anti-slip heads 97 are fixedly and alternately at the bottom of the horizontal plate 95. The adsorption plate 94 simultaneously drives the anti-slip blocks 96 and anti-slip heads 97 on the horizontal plate 95 to move downward, further preventing slippage on the ground surface and achieving a stable support effect for the gantry crane in a static state, so as to prevent it from shifting or even tipping over.

[0044] The working principle of a modular gantry lifting and handling device is as follows: First, quick-release screws 11 enable modular quick disassembly and assembly between the bottom beam seat 1 and the outer beam 2, and between the inner beam 3 and the top sliding beam 4. Two sets of slide rails 5 slide horizontally on the top sliding beam 4. Then, the lifting devices on two electric hoists 6 are used to balance and lift the goods. According to the stroke height of the lifting devices on the two electric hoists 6, the two lifting cylinders 10 can also be controlled to open synchronously and drive the two inner beams 3 to slide upward and downward within the two outer beams 2, thereby changing the lifting height of the two electric hoists 6 on the top sliding beam 4, completing the modular quick disassembly and assembly of the gantry and the lifting of goods of different heights.

[0045] After the gantry crane completes the lifting of the goods, the stepper motor 71 is controlled to drive the main bevel gear 72 to rotate. The main bevel gear 72 drives the positive and negative lead screws 74 on the bevel gear 73 to rotate accordingly. The positive and negative lead screws 74 drive the slides 76 on the two sets of lead screw sleeves 75 to move inward synchronously in the transverse slide groove 12. The two sets of slides 76 drive the limit brackets 78 on the two curved arms 77 to move inward accordingly, so as to limit and prevent the goods in the suspended state of the hoisting.

[0046] When the gantry moves, the horizontal slide bar 13 and the horizontal guide rail 14 provide sliding limit cooperation between the trapezoidal seat 82 and the bottom beam seat 1, controlling the two double-headed cylinders 81 to open synchronously and drive the trapezoidal seat 82 to slide outward in the bottom beam seat 1. The vertical slide bar 15 and the vertical guide rail 16 provide sliding limit cooperation between the bracket 85 and the bottom beam seat 1, and the trapezoidal seat 82 drives the bracket 85 on the gear 84 to press downward through the teeth 83. The bracket 85 drives the drive motor 86 and the Mecanum wheel 87 to pass through the through hole under the bottom beam seat 1 to the ground surface. Then, the drive motor 86 drives the Mecanum wheel 87 to move flexibly, completing the flexible movement of the gantry.

[0047] When the gantry is stationary, first grip the handle and use the handwheel 93 to drive the threaded rod 92 to rotate clockwise in the threaded seat 91. The threaded rod 92 drives the suction plate 94 to move down and forces the suction plate 94 to adhere to the ground surface. At the same time, the suction plate 94 drives the anti-slip block 96 and anti-slip head 97 to move down synchronously through the horizontal plate 95 and lock onto the ground surface, thus completing the stable support work of the gantry in the stationary state.

[0048] It should be noted that the specific models and specifications of the stepper motor 71, the double-headed cylinder 81, the drive motor 86, and the lifting cylinder 10 need to be selected and determined according to the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0049] The power supply circuits for the stepper motor 71, the double-headed cylinder 81, the drive motor 86, and the lifting cylinder 10 are clear to those skilled in the art and will not be described in detail here.

[0050] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A modular gantry crane lifting and handling device, comprising a bottom beam base (1), characterized in that: The top of the bottom beam seat (1) is longitudinally fixed with an outer beam frame (2), and the inner cavity of the outer beam frame (2) is slidably connected with an inner beam frame (3). The top of the inner beam frame (3) is horizontally fixed with a top sliding beam (4), and a slide rail groove is horizontally opened on the top sliding beam (4), and a slide rail frame (5) is slidably connected to it. An electric hoist (6) with a lifting device is hung at the bottom of the slide rail frame (5). Both sides of the top slide beam (4) are provided with limiting components for limiting and protecting the electric hoist (6), and the limiting components include a stepper motor (71) fixed on the top slide beam (4). The inner cavity of the bottom beam seat (1) is provided with an adjustment component for overall positioning, and the adjustment component includes a double-headed cylinder (81) horizontally fixed in the bottom beam seat (1).

2. The modular gantry crane lifting and handling device according to claim 1, characterized in that: The limiting assembly also includes a main bevel gear (72) fixed on the output shaft of the stepper motor (71), and a driven bevel gear (73) meshes with the bottom of the main bevel gear (72). The inner cavity of the driven bevel gear (73) is horizontally fixedly connected to a positive and negative lead screw (74) that rotates with the top slide beam (4). Both sides of the positive and negative lead screw (74) are threaded with lead screw sleeves (75). The top of the lead screw sleeve (75) is fixedly connected to a slide frame (76) that slides with the top slide beam (4). Both sides of the slide frame (76) are fixedly connected to bent arms (77). The inner side of the bent arms (77) is fixedly connected to a limiting bracket (78) that limits and protects the electric hoist (6).

3. The modular gantry crane lifting and handling device according to claim 2, characterized in that: The adjustment assembly also includes trapezoidal seats (82) fixed at both ends of the double-headed cylinder (81) and slidingly engaged with the bottom beam seat (1). The trapezoidal seats (82) have teeth (83) on their inclined surfaces. The bottom of the teeth (83) is engaged with a gear (84). The outer side of the gear (84) is rotatably connected to a bracket (85) that is engaged with the bottom beam seat (1). The bottom of the bracket (85) is fixedly connected to a drive motor (86) via a support. The output shaft of the drive motor (86) is fixedly connected to a Mecanum wheel (87) for walking.

4. The modular gantry crane lifting and handling device according to claim 3, characterized in that: A lifting cylinder (10) is fixedly connected to the outer side of the outer beam frame (2), and the piston rod of the lifting cylinder (10) is fixedly connected to the inner beam frame (3).

5. A modular gantry crane lifting and handling device according to claim 4, characterized in that: The bottom beam seat (1) and the outer beam frame (2), as well as the inner beam frame (3) and the top sliding beam (4), are all fixed by quick-release screws (11).

6. The modular gantry crane lifting and handling device according to claim 5, characterized in that: The top of the top sliding beam (4) is provided with transverse sliding grooves (12) on both sides for sliding cooperation with the slide frame (76), and a weight reduction groove is provided on the curved arm (77).

7. A modular gantry crane lifting and handling device according to claim 6, characterized in that: The limiting bracket (78) adopts a cross-shaped design, and a flexible protective pad is provided on the inner side of the limiting bracket (78).

8. A modular gantry crane lifting and handling device according to claim 7, characterized in that: The top array inside the bottom beam seat (1) is fixed with a horizontal slide bar (13), and the top array of the trapezoidal seat (82) is provided with a horizontal guide rail (14) that slides with the horizontal slide bar (13).

9. A modular gantry crane lifting and handling device according to claim 8, characterized in that: The bottom beam seat (1) is fixedly connected to a vertical slide bar (15) on its inner side, and the bracket (85) is provided with a vertical guide rail (16) that slides with the vertical slide bar (15) on its outer side.

10. A modular gantry crane lifting and handling device according to claim 9, characterized in that: Both sides of the bottom of the bottom beam seat (1) are provided with through openings that can be used to engage with the drive motor (86) and the Mecanum wheel (87).

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