Low beam body hoisting beam

Abstract

The utility model provides a kind of short beam body hoist beam, comprising: crossbeam, the extension direction of crossbeam is perpendicular to the extension direction of track, and crossbeam is movably connected with track;Longitudinal beam, the extension direction of longitudinal beam is perpendicular to the extension direction of crossbeam, and two ends of longitudinal beam are respectively suspended in two crossbeams by first hoisting connecting piece;Hoist frame beam, the extension direction of hoist frame beam is perpendicular to the extension direction of crossbeam, and two ends of hoist frame beam are respectively suspended in two longitudinal beams by second hoisting connecting piece, hoist frame beam includes at least two, at least two hoist frame beams are spaced apart along the extension direction of crossbeam, second hoisting connecting piece is connected with lifting assembly, and lifting assembly is used to adjust the relative spacing between hoist frame beam and longitudinal beam.The short beam body hoist beam in the utility model solves the technical problem that hoist beam using cross beam bearing mode is limited in low roadway operation.

Description

Technical Field

[0001] This utility model relates to the field of monorail lifting beam technology, specifically to a low-profile lifting beam. Background Technology

[0002] The mining monorail auxiliary transportation system is used for transporting equipment, personnel, and materials in underground coal mines. The locomotive is equipped with lifting beams of different tonnages to meet the transportation needs of different materials.

[0003] Hydraulic supports used for fully mechanized mining faces in coal mines typically have heavy beams ranging from 12 to 50 tons and widths from 1.3 to 1.7 meters. Existing lifting beam structures for transporting hydraulic supports generally employ both motor and cylinder lifting methods, using multiple load trolleys. To distribute the load on the load trolleys, existing heavy-duty lifting beam structures use a cross-beam load-bearing method. These cross beams are stacked vertically below the track and are the main load-bearing components. To meet load-bearing strength requirements, the cross-beam structure is complex and has a large height, restricting the movement of the lifting beam in low-ceilinged roadways. Increasing the roadway cross-section height to address insufficient roadway height increases the cost of roadway development and maintenance, causes construction delays, and reduces the economic benefits of the coal mine.

[0004] Therefore, existing technologies need further development. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and provide a low-beam lifting beam to solve the technical problem of limited passage of lifting beams using the cross beam bearing method in low-lying alleyways.

[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: A low-profile lifting beam is provided, comprising: a crossbeam, the extension direction of which is perpendicular to the extension direction of the track, and the crossbeam being movably connected to the track; a longitudinal beam, the extension direction of which is perpendicular to the extension direction of the crossbeam, with both ends of the longitudinal beam suspended from two crossbeams via first lifting connectors; and a lifting frame beam, the extension direction of which is perpendicular to the extension direction of the crossbeam, with both ends of the lifting frame beam suspended from two longitudinal beams via second lifting connectors. The lifting frame beam comprises at least two beams, which are spaced apart along the extension direction of the crossbeams. The second lifting connector is connected to a lifting assembly, which is used to adjust the relative distance between the lifting frame beam and the longitudinal beam.

[0007] Furthermore, the longitudinal beam includes: a first longitudinal beam, which is located below the crossbeams, with both ends of the first longitudinal beam suspended from the two crossbeams by a first lifting connector; and a second longitudinal beam, which is located below the first longitudinal beam, with both ends of the second longitudinal beam suspended from the two first longitudinal beams by a third lifting connector, and the second longitudinal beam connected to a lifting frame beam located below the second longitudinal beam by a second lifting connector.

[0008] Furthermore, the crossbeams include multiple crossbeams, which are spaced apart on the track along the extension direction of the track. The first longitudinal beams include multiple crossbeams, which are respectively connected to the multiple crossbeams. The second longitudinal beams include at least two crossbeams, which are respectively connected to the multiple first longitudinal beams.

[0009] Furthermore, the low beam lifting beam includes a load trolley, which is movably connected to the track. A first pin is rotatably mounted on the load trolley, and the extension direction of the first pin is parallel to the extension direction of the crossbeam. The first pin is movably mounted on the crossbeam so that the crossbeam rotates relative to the load trolley.

[0010] Furthermore, a limiting groove is provided at one end of the crossbeam near the load trolley, the limiting groove is spaced apart from the load trolley, a suspension pin protrudes from the limiting groove and is rotatably connected to the first pin, a limiting surface is formed on the limiting groove, a preset angle is provided between the extension direction of the limiting surface and the extension direction of the crossbeam, and a stop part is provided on the load trolley corresponding to the limiting surface, the stop part and the limiting surface can be abutted.

[0011] Furthermore, the low beam lifting beam includes a connecting rod, the extension direction of which is parallel to the extension direction of the track, and the two ends of the connecting rod are rotatably connected to one end of each of the two crossbeams.

[0012] Furthermore, connecting seats are provided at both ends of the crossbeam, and a second pin is installed in the connecting seat, with a connecting rod sleeved on the second pin.

[0013] Furthermore, the lifting assembly includes: a drive component installed inside the second longitudinal beam, the drive component including a telescopic rod, the telescopic direction of which is parallel to the extension direction of the second longitudinal beam, and a movable sprocket installed at the free end of the telescopic rod; a redirecting wheel, the redirecting wheel being rotatably installed inside the second longitudinal beam and positioned below the drive component; and a second lifting connector, the first end of which is fixedly disposed inside the second longitudinal beam, the second lifting connector sequentially passing around the movable sprocket and the redirecting wheel, causing the second end of the second lifting connector to move vertically.

[0014] Furthermore, the lifting components include at least two, and the at least two lifting components are configured in a one-to-one correspondence with the second longitudinal beam.

[0015] Furthermore, a third pin is provided at one end of the first hoisting connector that connects to the crossbeam, and the third pin is rotatably connected to the crossbeam; a third pin is also provided at one end of the first hoisting connector that connects to the longitudinal beam, and the third pin is rotatably connected to the longitudinal beam.

[0016] Beneficial effects: 1. Specifically, the longitudinal beam extends perpendicularly to the transverse beam, and its two ends are suspended below the two transverse beams via the first lifting connector, forming a load-bearing transition structure to achieve graded stress distribution in the multi-layered beam structure. Unlike the existing "cross beam" structure where beams are stacked vertically on the same plane, this design eliminates the cross beam structure, significantly reducing the height of the main beams. By placing the longitudinal beam below the transverse beam, it fully utilizes the vertical spatial redundancy and avoids the problem of beam height superposition caused by stacking longitudinal and transverse beams vertically on the same plane.

[0017] 2. By replacing the "cross beam" with split horizontal and vertical beams, a multi-level, split beam structure is formed, which solves the technical problem of restricted passage of lifting beams using the cross beam load-bearing method in low-lying alleys.

[0018] 3. The number of longitudinal beam layers can be increased or decreased according to the actual situation. For example, the number of longitudinal beam layers can be adjusted according to the load to form a multi-level combination. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the short beam lifting beam used in this embodiment of the utility model; Figure 2 This is a front view of the short beam lifting beam used in this embodiment of the utility model; Figure 3 This is a side view of the short beam lifting beam used in this embodiment of the utility model; Figure 4 This is a schematic diagram of the crossbeam structure of the low beam lifting beam used in this embodiment of the utility model; Figure 5 This is a front view of the crossbeam of the short beam lifting beam used in this embodiment of the utility model; Figure 6 This is the book Figure 5 AA section view in the middle; Figure 7 This is a schematic diagram of the internal structure of the second longitudinal beam of the low beam lifting beam used in this embodiment of the utility model.

[0020] The above figures include the following reference numerals: 10. Track; 1. Crossbeam; 11. Limiting groove; 12. Suspension pin; 13. Limiting surface; 14. Connecting seat; 15. Second pin; 2. Longitudinal beam; 21. First longitudinal beam; 22. Second longitudinal beam; 3. First lifting connector; 31. Third pin; 4. Lifting frame beam; 41. Lifting connector; 5. Second lifting connector; 6. Lifting assembly; 61. Drive component; 611. Telescopic rod; 612. Movable sprocket; 62. Idling wheel; 7. Third lifting connector; 8. Load trolley; 81. First pin; 82. Stop; 9. Connecting rod. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] According to an embodiment of this utility model, a short beam lifting beam is provided. Please refer to [link / reference]. Figures 1 to 7 The system includes: a crossbeam 1, the extension direction of which is perpendicular to the extension direction of the track 10, and the crossbeam 1 is movably connected to the track 10; a longitudinal beam 2, the extension direction of which is perpendicular to the extension direction of the crossbeam 1, and the two ends of the longitudinal beam 2 are respectively suspended from the two crossbeams 1 by a first lifting connector 3; and a lifting frame beam 4, the extension direction of which is perpendicular to the extension direction of the crossbeam 1, and the two ends of the lifting frame beam 4 are respectively suspended from the two longitudinal beams 2 by a second lifting connector 5. The lifting frame beam 4 includes at least two beams, and the at least two lifting frame beams 4 are spaced apart along the extension direction of the crossbeam 1. The second lifting connector 5 is connected to a lifting assembly 6, and the lifting assembly 6 is used to adjust the relative distance between the lifting frame beam 4 and the longitudinal beam 2.

[0023] Specifically, the crossbeam 1 serves as the basic load-bearing beam, its extension direction is perpendicular to the extension direction of the track 10, and it is movably connected to the track 10, forming the main beam for the lifting beam to move along the track.

[0024] Specifically, the longitudinal beam 2 extends perpendicularly to the transverse beam 1, and its two ends are suspended below the two transverse beams 1 via the first lifting connector 3, forming a load-bearing transition structure to achieve graded stress distribution in the multi-layered beam structure. Unlike the existing "cross beam" structure where beams are stacked vertically on the same plane, this design eliminates the cross beam structure, significantly reducing the height of the main beams. By placing the longitudinal beam 2 below the transverse beam 1, it fully utilizes the vertical spatial redundancy and avoids the problem of beam height superposition caused by stacking longitudinal and transverse beams vertically on the same plane.

[0025] Specifically, the lifting beam 4 is used to directly connect the material or workpiece being lifted, the second lifting connector 5 is connected to the lifting assembly 6, and the lifting assembly 6 is used to adjust the relative distance between the lifting beam 4 and the longitudinal beam 2, thereby realizing the active adjustment of the lifting height. In the working state, it can be lowered to the required working height to meet the lifting needs under different working conditions.

[0026] In the low-profile lifting beam of this embodiment, during actual use, when the goods are lifted, the goods are located below the crossbeam 1 and between the longitudinal beams on both sides. The goods are only separated from the track located on the top surface of the tunnel by the crossbeam, thus significantly reducing the distance between the goods and the top surface of the tunnel and avoiding restricted passage of the lifting beam in low-profile tunnels. By replacing the "cross beam" with split crossbeams and longitudinal beams, a multi-level, split beam structure is formed, solving the technical problem of restricted passage of lifting beams using the cross beam load-bearing method in low-profile tunnels in related technologies.

[0027] Optionally, the crossbeam 1 includes at least two crossbeams, which are spaced apart on the track along the extension direction of the track; the longitudinal beam 2 includes at least two longitudinal beams, which are spaced apart below the crossbeam 1 along the extension direction of the crossbeam 1, and the at least two longitudinal beams 2 and the crossbeam 1 are connected to each other by the first lifting connector 3; the lifting beam 4 is connected to the longitudinal beam on the corresponding side.

[0028] Optionally, the first hoisting connector 3 is provided at one end of the crossbeam 1, that is, the first hoisting connector 3 on both sides is provided at both ends of the crossbeam 1, and the first hoisting connector 3 on both sides is symmetrically arranged.

[0029] Understandably, the number of longitudinal beam layers can be increased or decreased depending on the actual situation. For example, multiple layers of longitudinal beams can be combined according to the load. The following is a detailed explanation of a short beam lifting beam structure with two layers of longitudinal beams.

[0030] In some embodiments of the low-beam lifting beam, see Figure 1-3 The longitudinal beam 2 includes: a first longitudinal beam 21, which is located below the crossbeam 1, and both ends of the first longitudinal beam 21 are suspended from the two crossbeams 1 by the first lifting connector 3; and a second longitudinal beam 22, which is located below the first longitudinal beam 21, and both ends of the second longitudinal beam 22 are suspended from the two first longitudinal beams 21 by the third lifting connector 7. The second longitudinal beam 22 is connected to the lifting frame beam 4 located below the second longitudinal beam 22 by the second lifting connector 5.

[0031] Optionally, the third hoisting connector 7 is centrally located on the first longitudinal beam 21 at one end, and the other end of the third hoisting connector 7 is located at one end of the second longitudinal beam 22.

[0032] Specifically, the first longitudinal beam 21 is located below the crossbeam 1, and the second longitudinal beam 22 is suspended below the two first longitudinal beams 21. The second longitudinal beam 22 is connected to the lifting frame beam 4 located below it through the second lifting connector 5, so that the lifting load is sequentially transmitted to the track 10 through the lifting frame beam 4, the second lifting connector 5, the second longitudinal beam 22, the third lifting connector 7, the first longitudinal beam 21, the first lifting connector 3, and the crossbeam 1, forming a stable force transmission path. This not only disperses the local stress of each connection node and improves the load-bearing reliability and fatigue life of the structure, but also enhances the stability of the system during the lifting process, realizes the graded stress of the multi-layer beam, and forms a multi-level, split beam structure.

[0033] In some embodiments of the low-beam lifting beam, see Figure 1-3 The crossbeam 1 includes multiple crossbeams 1, which are spaced apart on the track 10 along the extension direction of the track 10. The first longitudinal beam 21 includes multiple first longitudinal beams 21, which are respectively connected to the multiple crossbeams 1. The second longitudinal beam 22 includes at least two second longitudinal beams 22, which are respectively connected to the multiple first longitudinal beams 21.

[0034] By setting multiple crossbeams 1 spaced apart along the extension direction of track 10, the load is supported at multiple points and evenly distributed on track 10, reducing the concentrated stress at a single connection point and improving the overall load-bearing capacity and bending stiffness of the structure. Multiple first longitudinal beams 21 are connected to multiple crossbeams 1 respectively, and at least two second longitudinal beams 22 are connected to multiple first longitudinal beams 21 respectively, forming a multi-point suspension structure that makes the stress on the first longitudinal beams 21 and crossbeams 1 more even.

[0035] Understandably, the number of crossbeams, longitudinal beams, and lifting beams can be increased according to actual needs. The number of crossbeams can be configured in increments of 2, 4, 8, 16, etc., to accommodate different spans, loads, and spatial layout requirements. For example, when lifting large or long goods, the number of crossbeams, longitudinal beams, and lifting beams can be adjusted accordingly. The number of crossbeams 1 can be configured as 8, the number of first longitudinal beams 21 as 8, the number of second longitudinal beams 22 as 4, and the number of lifting longitudinal beams 4 as two. This provides multiple independent lifting support points for lifting beams 4, enabling multi-point synchronous lifting of large or long workpieces.

[0036] In the short beam lifting beam of this embodiment, see Figure 4-6The low-beam lifting beam includes a load trolley 8, which is movably connected to the track 10. A first pin 81 is rotatably mounted on the load trolley 8. The extension direction of the first pin 81 is parallel to the extension direction of the crossbeam 1. The first pin 81 is movably mounted on the crossbeam 1 so that the crossbeam 1 can rotate relative to the load trolley 8. The crossbeam 1 can rotate around the first pin 81, allowing it to rotate relative to the load trolley 8, providing the lifting beam with the necessary degrees of freedom for turning and climbing.

[0037] In the short beam lifting beam of this embodiment, see Figure 4-6 A limiting groove 11 is provided at one end of the crossbeam 1 near the load trolley 8. The limiting groove 11 is spaced apart from the load trolley 8. A suspension pin 12 protrudes from the limiting groove 11 and is rotatably connected to the first pin 81. A limiting surface 13 is formed on the limiting groove 11. A preset angle is set between the extending direction of the limiting surface 13 and the extending direction of the crossbeam 1. The load trolley 8 is provided with a stop 82 corresponding to the limiting surface 13. The stop 82 and the limiting surface 13 can be abutted. Specifically, the extending direction of the limiting groove 11 is parallel to the extending direction of the crossbeam 1. The crossbeam 1 can rotate horizontally radially along the suspension pin 12. By setting the limiting surface 13 and the stop 82, when the crossbeam 1 rotates to a certain angle relative to the load trolley 8, the stop 82 and the limiting surface 13 can abut, thereby restricting the rotational freedom of the crossbeam 1 and restricting the free swing of the crossbeam.

[0038] Optionally, the limiting groove 11 is a V-shaped groove.

[0039] In the short beam lifting beam of this embodiment, see Figure 1 The low-beam lifting beam includes a connecting rod 9, the extension direction of which is parallel to the extension direction of the track 10. Both ends of the connecting rod 9 are rotatably connected to one end of each of the two crossbeams 1. Specifically, the connecting rod 9 connects the two crossbeams 1 to form an integrated linkage structure, significantly enhancing the structural rigidity and stability of the lifting beam in the lateral direction. The rotatable connection between the connecting rod 9 and the two crossbeams 1 allows for angular adjustment of the crossbeams 1 relative to the connecting rod 9 in the vertical plane, providing the lifting beam with the necessary degrees of freedom for turning and climbing.

[0040] In the short beam lifting beam of this embodiment, see Figure 4 A connecting seat 14 is provided at each end of the crossbeam 1. A second pin 15 is installed in the connecting seat 14, and a connecting rod 9 is sleeved on the second pin 15. By providing the connecting seat 14 and the second pin 15, it is convenient to install the connecting rod 9, so that the two ends of the connecting rod 9 are rotatably connected to one end of the crossbeam 1.

[0041] In the short beam lifting beam of this embodiment, see Figure 7The lifting assembly 6 includes a drive component 61 installed inside the second longitudinal beam 22. The drive component 61 includes a telescopic rod 611, the telescopic direction of which is parallel to the extension direction of the second longitudinal beam 22, and a movable sprocket 612 installed at the free end of the telescopic rod 611. A redirecting wheel 62 is rotatably installed inside the second longitudinal beam 22 and is located below the drive component 61. The first end of the second lifting connector 5 is fixedly installed inside the second longitudinal beam 22. The second lifting connector 5 passes around the movable sprocket 612 and the redirecting wheel 62 in sequence, so that the second end of the second lifting connector 5 moves vertically.

[0042] Optionally, a passage is provided at the center of the lower part of the second longitudinal beam 22 for the passage of the second hoisting connector 5.

[0043] Specifically, when the drive component 61 is activated, the telescopic rod 611 extends and retracts, causing the movable sprocket 612 to move along the extension direction of the second longitudinal beam 22, thereby changing the effective length of the second lifting connector 5 on the movable sprocket 612 and driving its second end to produce a vertical displacement. In this way, the lifting assembly 6, by horizontally embedding the drive component 61 in the second longitudinal beam 22, combined with the traction and guidance of the movable sprocket 612 and the redirecting wheel 62 on the second lifting connector 5, realizes the active adjustment function of the lifting height.

[0044] In some embodiments, the drive component 61 includes, but is not limited to, a drive structure with telescopic function such as a hydraulic cylinder, a pneumatic cylinder, or an electric push rod.

[0045] In the short beam lifting beam of this embodiment, see Figure 1 The lifting assembly 6 includes at least two components, and each of the at least two lifting assemblies 6 is configured to correspond one-to-one with the second longitudinal beam 22. Specifically, each second longitudinal beam 22 is equipped with a set of lifting assemblies 6, and the lifting assemblies 6 include at least two components, thereby controlling the lifting beam on the corresponding side respectively.

[0046] Understandably, the number of lifting components 6 is consistent with the number of second longitudinal beams, ensuring that each second longitudinal beam contains one set of lifting components 6. For example, when there are four second longitudinal beams, the number of lifting components 6 is also four.

[0047] In some embodiments, the lifting assembly 6 may also be installed inside the lifting beam 4.

[0048] In the short beam lifting beam of this embodiment, see Figure 4The first hoisting connector 3 is provided with a third pin 31 at one end connected to the crossbeam 1, and the third pin 31 is rotatably connected to the crossbeam 1. The first hoisting connector 3 is also provided with a third pin 31 at one end connected to the longitudinal beam 2, and the third pin 31 is rotatably connected to the longitudinal beam 2. Specifically, the first hoisting connector 3 is rotatably connected at both ends through the third pin 31, which allows the first hoisting connector 3 to adapt to changes in the relative angle between the crossbeam 1 and the longitudinal beam 2. In actual operation, when there is a height deviation between the two crossbeams 1, the longitudinal beam 2 can tilt slightly around its suspension point, avoiding local stress concentration, component deformation, or connection failure caused by rigid connection.

[0049] It is understandable that the second lifting connector 5 or the third lifting connector 7 can also be adapted to have a third pin 31 at both ends, thereby increasing the structural stability of the entire low beam lifting beam.

[0050] In some embodiments, a lifting connector 41 is suspended below the lifting beam 4 for suspending goods.

[0051] In some embodiments, chains may be used in the first lifting connector 3, the second lifting connector 5, or the third lifting connector 7 and the lifting connector 41.

[0052] In this embodiment of the low-beam lifting beam, addressing the technical problems of existing technologies that use a crossbeam structure and whose placement below the track results in significant vertical space occupation and impaired maneuverability, a lifting beam design is created that eliminates the traditional crossbeam structure. For example, the crossbeam structure is eliminated from common lifting beam types such as conventional motor lifting beams, hydraulic cylinder lifting beams, and bracket-specific lifting beams. The longitudinal beams and crossbeams are connected by chains, achieving a split-suspended structure. The longitudinal beams employ a multi-stage combination form, allowing for expansion as needed. The load trolley and crossbeams use a planar contact engagement method, which restricts the free swing of the crossbeams while allowing them to rotate radially along the first pin in the horizontal plane, thereby improving track adaptability. Using this embodiment of the low-beam lifting beam significantly reduces the height of the main beam and optimizes the spatial layout.

[0053] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0054] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments, and will not be repeated here.

[0055] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A low-profile lifting beam, characterized in that, include: A crossbeam (1) extends in a direction perpendicular to the extension direction of the track (10), and the crossbeam (1) is movably connected to the track (10). The longitudinal beam (2) extends perpendicularly to the extension direction of the cross beam (1), and the two ends of the longitudinal beam (2) are respectively suspended from the two cross beams (1) by the first hoisting connector (3). The lifting beam (4) extends perpendicularly to the extension direction of the crossbeam (1). Both ends of the lifting beam (4) are suspended from the two longitudinal beams (2) by the second lifting connector (5). The lifting beam (4) includes at least two beams, which are spaced apart along the extension direction of the crossbeam (1). The second lifting connector (5) is connected to the lifting assembly (6), which is used to adjust the relative distance between the lifting beam (4) and the longitudinal beam (2).

2. The short beam lifting beam according to claim 1, characterized in that, The longitudinal beam (2) includes: The first longitudinal beam (21) is located below the cross beam (1), and the two ends of the first longitudinal beam (21) are respectively suspended from the two cross beams (1) by the first hoisting connector (3). The second longitudinal beam (22) is located below the first longitudinal beam (21). The two ends of the second longitudinal beam (22) are suspended from the two first longitudinal beams (21) by the third hoisting connector (7). The second longitudinal beam (22) is connected to the lifting frame beam (4) located below the second longitudinal beam (22) by the second hoisting connector (5).

3. The short beam lifting beam according to claim 2, characterized in that, The crossbeams (1) include multiple crossbeams (1) which are spaced apart on the track (10) along the extension direction of the track (10). The first longitudinal beams (21) include multiple first longitudinal beams (21) which are respectively connected to the multiple crossbeams (1). The second longitudinal beams (22) include at least two second longitudinal beams (22) which are respectively connected to the multiple first longitudinal beams (21).

4. The short beam lifting beam according to claim 1, characterized in that, The low beam lifting beam includes a load trolley (8), which is movably connected to the track (10). A first pin (81) is rotatably mounted on the load trolley (8). The extension direction of the first pin (81) is parallel to the extension direction of the crossbeam (1). The first pin (81) is movably mounted on the crossbeam (1) so that the crossbeam (1) rotates relative to the load trolley (8).

5. The short beam lifting beam according to claim 4, characterized in that, A limiting groove (11) is provided at one end of the crossbeam (1) near the load trolley (8). The limiting groove (11) is spaced apart from the load trolley (8). A suspension pin (12) protrudes from the limiting groove (11) and is rotatably connected to the first pin (81). A limiting surface (13) is formed on the limiting groove (11). A preset angle is provided between the extension direction of the limiting surface (13) and the extension direction of the crossbeam (1). A stop part (82) is provided on the load trolley (8) corresponding to the limiting surface (13). The stop part (82) and the limiting surface (13) are grounded to abut against each other.

6. The short beam lifting beam according to claim 1, characterized in that, The short beam lifting beam includes a connecting rod (9), the extension direction of the connecting rod (9) is parallel to the extension direction of the track (10), and the two ends of the connecting rod (9) are rotatably connected to one end of the two crossbeams (1).

7. The short beam lifting beam according to claim 6, characterized in that, The two ends of the crossbeam (1) are respectively provided with connecting seats (14), and a second pin (15) is installed in the connecting seat (14), and the connecting rod (9) is sleeved on the second pin (15).

8. The short beam lifting beam according to claim 3, characterized in that, The lifting assembly (6) includes components installed inside the second longitudinal beam (22): The drive component (61) includes a telescopic rod (611), the telescopic direction of which is parallel to the extension direction of the second longitudinal beam (22), and a movable sprocket (612) is installed at the free end of the telescopic rod (611). A reversing wheel (62) is rotatably mounted inside the second longitudinal beam (22), and the reversing wheel (62) is located below the drive component (61); The first end of the second hoisting connector (5) is fixedly installed inside the second longitudinal beam (22). The second hoisting connector (5) passes around the movable sprocket (612) and the redirecting wheel (62) in sequence, so that the second end of the second hoisting connector (5) moves vertically.

9. The short beam lifting beam according to claim 8, characterized in that, The lifting components (6) include at least two, and at least two of the lifting components (6) are arranged in a one-to-one correspondence with the second longitudinal beam (22).

10. The short beam lifting beam according to claim 1, characterized in that, The first hoisting connector (3) is provided with a third pin (31) at one end connected to the crossbeam (1), and the third pin (31) is rotatably connected to the crossbeam (1); and / or, The first hoisting connector (3) is provided with a third pin (31) at one end connected to the longitudinal beam (2), and the third pin (31) is rotatably connected to the longitudinal beam (2).

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