Portal crane facilitating stable operation in small space

Abstract

The utility model discloses a door -type crane convenient to small space stable operation, include: two moving mechanism, U type connecting piece, casing, main beam, a plurality of vice beam, two bearing sliding blocks, two -way cylinder, electric hoist, crane, servo motor, gear and two clamps, the main beam is by a plurality of vice beam splicing and is composed, vice beam includes: I -beam, tooth plate, locating block, locating groove, two thread holes no.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, specifically to a gantry crane that facilitates stable operation in small spaces. Background Technology

[0002] Gantry cranes for confined spaces are small, mobile lifting devices designed specifically for narrow spaces. They feature a compact gantry structure, flexible tracks, and a control system, enabling them to move freely and position precisely within limited spaces, easily completing material lifting and loading / unloading, effectively improving efficiency and safety in confined space operations.

[0003] Existing small mobile gantry cranes have a fixed main beam length, meaning the crane's span cannot be changed. If the work site dimensions change, the original equipment may become unsuitable for the new environment, requiring repurchase or modification. In low-ceilinged spaces, an excessively long fixed main beam may collide with overhead pipes and lighting fixtures, reducing the effective lifting height. When multiple cranes operate in parallel in small spaces, the fixed main beams cannot be misaligned, easily causing mutual interference. Installing a fixed-length main beam requires sufficient space for hoisting and assembly. In small spaces, this can be very difficult or even impossible. If the crane needs to be moved to another location, the disassembly, transportation, and reinstallation processes also face the challenge of insufficient space. Utility Model Content

[0004] The purpose of this utility model is to provide a gantry crane that facilitates stable operation in small spaces. By adding or removing standard I-beam modules, the length of the main beam can be extended or shortened as needed, easily coping with scenarios such as changes in warehouse space and track adjustments. In scenarios where multiple tracks or different operating areas need to be crossed, the main beam can be spliced ​​and quickly reassembled into different span configurations, supporting "one machine for multiple uses". It adopts a modular design, and when a single standard I-beam module is damaged, it can be replaced individually without scrapping the entire main beam, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gantry crane that facilitates stable operation in small spaces, characterized in that it comprises: two moving mechanisms, a U-shaped connector, a shell, a main beam, multiple secondary beams, two load-bearing sliders, a bidirectional cylinder, an electric hoist, a crane, a servo motor, gears, and two clamps. The main beam is composed of multiple secondary beams spliced ​​together, and each secondary beam includes: an I-beam, a toothed plate, a positioning block, a positioning groove, two threaded holes one, and two threaded holes two. The moving mechanism includes: a hydraulic telescopic rod, and the I-beam is mounted on the upper hydraulic telescopic rod. The structure includes a retractable rod, a toothed plate fixedly installed at the bottom of an I-beam, a positioning block fixedly installed at one end of the I-beam, a positioning groove located at the end of the I-beam away from the positioning block, two threaded holes (one) located on one side of the outer wall of the positioning block, two threaded holes (two others) located at the end of the I-beam away from the positioning block, and both threaded holes (two others) communicating with the positioning groove. A servo motor is fixedly installed on one side of the outer wall of the housing, with its output shaft extending into the housing. A gear is fixedly installed on the output shaft of the servo motor, and the gear meshes with the toothed plate.

[0006] Furthermore, the moving mechanism also includes a base and a plurality of casters, wherein the base is fixedly installed on the bottom of the hydraulic telescopic rod, and the plurality of casters are all fixedly installed on the bottom of the base.

[0007] Furthermore, the U-shaped connector is fixedly installed on the output shaft of the hydraulic telescopic rod away from the servo motor, and the U-shaped connector is fixedly connected to the corresponding I-beam by bolts. The housing is fixedly installed on the output shaft of the hydraulic telescopic rod close to the servo motor.

[0008] Furthermore, the two load-bearing sliders are symmetrically installed on the inner wall of the housing, and the two load-bearing sliders are slidably connected to the I-beam.

[0009] Furthermore, the bidirectional cylinder is fixedly installed on the bottom inner wall of the housing, and the two clamps are respectively fixedly installed on the two output shafts of the bidirectional cylinder.

[0010] Furthermore, the electric hoist is slidably mounted on the I-beam.

[0011] Furthermore, the crane is fixedly installed at the bottom of the electric hoist.

[0012] In summary, due to the adoption of the above-mentioned technologies, the beneficial effects of this utility model are:

[0013] This invention utilizes multiple I-beams to divide the main beam into several sections. Users can then assemble these I-beams according to their operational needs, adjusting the length of the main beam and avoiding unnecessary costs due to excessive length allowances. Individual damaged I-beams can be replaced separately, eliminating the need to scrap the entire main beam.

[0014] This utility model, by setting up a moving mechanism, facilitates the control of the height of the main beam. Through the coordinated operation of the servo motor and hydraulic cylinder, the crane can quickly adjust the working position without frequent movement of the whole machine or reinstallation, significantly shortening the loading and unloading time of goods. It can support the crane to switch between multiple working points, reduce downtime, and improve equipment utilization. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a gantry crane that facilitates stable operation in small spaces according to the present invention.

[0016] Figure 2 This is a schematic diagram of the main sectional view of a gantry crane that facilitates stable operation in small spaces according to the present invention.

[0017] Figure 3 This is a schematic diagram of the sub-beam structure of this utility model;

[0018] Figure 4 This is a cross-sectional structural schematic diagram of the secondary beam of this utility model;

[0019] Figure 5 This is a three-dimensional sectional view of the U-shaped connector of this utility model;

[0020] Figure 6 This is a side sectional view of the shell of this utility model.

[0021] In the diagram: 1. Moving mechanism; 101. Hydraulic telescopic rod; 102. Base; 103. Caster wheel; 2. U-shaped connector; 3. Housing; 4. Main beam; 5. Sub-beam; 501. I-beam; 502. Toothed plate; 503. Positioning block; 504. Positioning groove; 505. Threaded hole one; 506. Threaded hole two; 6. Load-bearing slider; 7. Two-way cylinder; 8. Electric hoist; 9. Crane; 10. Servo motor; 11. Gear; 12. Fixture. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] This utility model provides, for example Figure 1-5 As shown, a gantry crane for stable operation in confined spaces includes: two moving mechanisms 1, a U-shaped connector 2, a housing 3, a main beam 4, multiple secondary beams 5, two load-bearing sliders 6, a double-acting cylinder 7, an electric hoist 8, a crane 9, a servo motor 10, gears 11, and two clamps 12. The main beam 4 is composed of multiple secondary beams 5 spliced ​​together. Each secondary beam 5 includes: an I-beam 501, a toothed plate 502, a positioning block 503, a positioning groove 504, two threaded holes 505, and two threaded holes 506. The moving mechanism 1 includes a hydraulic telescopic rod 101. The I-beam 501 is mounted on the upper hydraulic telescopic rod 101. The toothed plate 502 is fixedly installed at the bottom of the I-beam 501. The positioning block 503 is fixedly installed on... At one end of the I-beam 501, the positioning groove 504 is opened at the end of the I-beam 501 away from the positioning block 503. Two threaded holes 505 are opened on one side of the outer wall of the positioning block 503. Two threaded holes 506 are set at the end of the I-beam 501 away from the positioning block 503. Both threaded holes 506 communicate with the positioning groove 504. The servo motor 10 is fixedly installed on one side of the outer wall of the housing 3. The output shaft of the servo motor 10 extends into the housing 3. The gear 11 is fixedly installed on the output shaft of the servo motor 10. The gear 11 meshes with the gear plate 502. The material of the I-beam 501 is low alloy structural steel Q345-B, which has better load-bearing capacity and deformation resistance.

[0024] In addition, the moving mechanism 1 also includes a base 102 and a plurality of casters 103. The base 102 is fixedly installed on the bottom of the hydraulic telescopic rod 101, and the plurality of casters 103 are all fixedly installed on the bottom of the base 102. The hydraulic telescopic rod 101 is model 3TG90×220, which can meet the lifting requirements of the gantry crane. The casters 103 are model A130320T-506, which have the functions of load bearing and locking.

[0025] In addition, the U-shaped connector 2 is fixedly installed on the output shaft of the hydraulic telescopic rod 101 away from the servo motor 10, and the U-shaped connector 2 is fixedly connected to the corresponding I-beam 501 by bolts. The housing 3 is fixedly installed on the output shaft of the hydraulic telescopic rod 101 close to the servo motor 10.

[0026] In addition, the two load-bearing sliders 6 are symmetrically installed on the inner wall of the housing 3, and the two load-bearing sliders 6 are slidably connected to the I-beam 501.

[0027] In addition, the bidirectional cylinder 7 is fixedly installed on the bottom inner wall of the housing 3, and the two clamps 12 are respectively fixedly installed on the two output shafts of the bidirectional cylinder 7. The model of the bidirectional cylinder 7 is MHL2-40D2.

[0028] In addition, the electric hoist 8 is slidably mounted on the I-beam 501, and the model of the electric hoist 8 is MD1 electric hoist.

[0029] In addition, the crane 9 is fixedly installed at the bottom of the electric hoist 8, and the crane 8 is an LX type electric single-girder overhead crane to meet the lifting requirements of goods.

[0030] Working principle:

[0031] Step 1: When the main beam 4 needs to be shortened, activate the hydraulic telescopic rod 101 to lower the main beam 4, unlock the caster wheel 103, activate the bidirectional cylinder 7 to control the clamp 12 to release the I-beam 501, activate the servo motor 9, and while the gear 11 moves along the toothed plate 502 towards the U-shaped connector 2, the housing 3 and the following gear 11 move. When it reaches the designated position, activate the bidirectional cylinder 7 to control the clamp 11 to hold the I-beam 501. Multiple workers remove the bolts and remove the I-beam 501 as needed. At this time, the length of the main beam 4 is shortened. Then, lock the caster wheel 103, activate the hydraulic telescopic rod 101 to raise the main beam 4, activate the electric hoist 8 to control the crane 9 to move horizontally on the main beam 4, and activate the crane 9 to lift and lower for hoisting operations.

[0032] Step 2: When the main beam 4 needs to be lengthened, activate the hydraulic telescopic rod 101 to control the main beam 4 to lower, engage the positioning slot of the I-beam 501 to be installed with the positioning block of the already installed I-beam 501, and fix it with bolts. Then unlock the caster wheel 103, activate the bidirectional cylinder 7 to control the clamp 12 to release the I-beam 501, activate the servo motor 10, and while the gear 11 moves along the tooth plate 502 away from the U-shaped connector 2, the housing 3 moves with the gear 10. When it moves to the designated position, lock the caster wheel 103, activate the bidirectional cylinder 7 to control the clamp 12 to hold the I-beam 501, activate the hydraulic telescopic rod 101 to lift the main beam 4, activate the electric hoist 8 to control the crane 9 to move horizontally on the main beam 4, and activate the crane 9 to lift and lower for hoisting operations.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A gantry crane that facilitates stable operation in confined spaces, characterized in that, include: The system comprises two moving mechanisms (1), a U-shaped connector (2), a housing (3), a main beam (4), multiple secondary beams (5), two load-bearing sliders (6), a two-way cylinder (7), an electric hoist (8), a crane (9), a servo motor (10), a gear (11), and two clamps (12). The main beam (4) is composed of multiple secondary beams (5). Each secondary beam (5) includes an I-beam (501), a toothed plate (502), a positioning block (503), a positioning groove (504), two threaded holes (505), and two threaded holes (506). The moving mechanism (1) includes a hydraulic telescopic rod (101). The I-beam (501) is mounted on the upper hydraulic telescopic rod (101), and the toothed plate (502) is fixedly mounted on the bottom of the I-beam (501). The positioning block (503) is fixedly installed at one end of the I-beam (501), the positioning groove (504) is opened at the end of the I-beam (501) away from the positioning block (503), the two threaded holes (505) are both opened on one side of the outer wall of the positioning block (503), the two threaded holes (506) are both set at the end of the I-beam (501) away from the positioning block (503), and the two threaded holes (506) are both connected to the positioning groove (504). The servo motor (10) is fixedly installed on one side of the outer wall of the housing (3), the output shaft of the servo motor (10) extends into the housing (3), the gear (11) is fixedly installed on the output shaft of the servo motor (10), and the gear (11) meshes with the gear plate (502).

2. The gantry crane according to claim 1, which facilitates stable operation in confined spaces, is characterized in that: The moving mechanism (1) further includes a base (102) and a plurality of casters (103). The base (102) is fixedly installed on the bottom of the hydraulic telescopic rod (101), and the plurality of casters (103) are all fixedly installed on the bottom of the base (102).

3. A gantry crane for stable operation in confined spaces according to claim 1, characterized in that: The U-shaped connector (2) is fixedly installed on the output shaft of the hydraulic telescopic rod (101) away from the servo motor (10). The U-shaped connector (2) is fixedly connected to the corresponding I-beam (501) by bolts. The housing (3) is fixedly installed on the output shaft of the hydraulic telescopic rod (101) close to the servo motor (10).

4. A gantry crane for stable operation in confined spaces according to claim 1, characterized in that: The two load-bearing sliders (6) are symmetrically installed on the inner wall of the housing (3), and the two load-bearing sliders (6) are slidably connected to the I-beam (501).

5. A gantry crane for stable operation in confined spaces according to claim 1, characterized in that: The bidirectional cylinder (7) is fixedly installed on the bottom inner wall of the housing (3), and the two clamps (12) are respectively fixedly installed on the two output shafts of the bidirectional cylinder (7).

6. A gantry crane for stable operation in confined spaces according to claim 1, characterized in that: The electric hoist (8) is slidably mounted on the I-beam (501).

7. A gantry crane for stable operation in confined spaces according to claim 1, characterized in that: The crane (9) is fixedly installed at the bottom of the electric hoist (8).

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