A telescopic hoisting balance beam and hoisting system

Abstract

The present application relates to a telescopic hoisting balance beam and a hoisting system, which belongs to the technical field of hoisting, and comprises a main beam and a secondary beam, wherein one end of the secondary beam is slidably inserted into the interior of the main beam, and the sliding direction is along the length direction of the main beam, and the interiors of the main beam and the secondary beam are both hollow and connected to each other; an adjustment component is provided at the connecting part between the secondary beam and the main beam, and the adjustment component comprises a motor, a first gear and a first rack, and the motor is located on the inner wall of the main beam, and the output shaft of the motor is detachably connected to the first gear, and the first gear is rotatably connected to the inner wall of the main beam, and the first gear takes the center line of the motor output shaft as the rotation axis, and rotates relative to the main beam, and the first rack is fixed on the inner wall of the secondary beam, and the first rack is arranged along the length direction of the secondary beam, and the first gear is meshed with the first rack. The present application has the effect of coping with different hoisting site sizes, providing convenience for hoisting materials into the interior of the main structure, improving hoisting efficiency, and saving human resources.

Description

Technical Field

[0001] The present application relates to the technical field of hoisting, and in particular to a retractable hoisting balance beam and a hoisting system. Background Art

[0002] Material transportation is required in the lifting of small PC components, secondary structure construction or interior decoration construction, that is, vertical transportation operations within the building are required after the main structure is completed, so as to meet the needs of building construction.

[0003] Conventional transportation usually uses manual labor with outdoor elevators or cranes to lift the materials to the unloading platform outside the structure, and then manually transport them to the inside of the main structure.

[0004] It requires a lot of manpower and machinery, and it is impossible to directly transport or hoist it into the structure. Therefore, based on the principle of lever, a retractable hoisting beam is invented to hoist small PC components and secondary structural materials directly into the structure.

[0005] A conventional balance beam uses an I-beam as the main body of the balance beam, and a lifting point is set on the I-beam for connecting rigging to ensure the stability of the balance beam during the lifting process.

[0006] During the hoisting process, the inventor believes that when the hoisting site is limited, or when hoisting needs to be performed inside a building, the space around the hoisting is limited, and there is a defect that the hoisting with fixed hoists is obstructed, affecting the hoisting efficiency. Summary of the invention

[0007] In order to cope with different sizes of lifting sites, provide convenience for lifting materials into the main structure, improve lifting efficiency, and save human resources, the present application provides a retractable lifting balance beam and lifting system.

[0008] In the first aspect, the present application provides a retractable hoisting balance beam, which adopts the following technical solution:

[0009] A telescopic lifting balance beam comprises a main beam and a secondary beam, wherein one end of the secondary beam is slidably inserted into the interior of the main beam, and the sliding direction is along the length direction of the main beam. The interiors of the main beam and the secondary beam are both hollow and the two are internally connected; an adjustment component is provided at the connection point between the secondary beam and the main beam, and the adjustment component comprises a motor, a first gear and a first rack. The motor is located on the inner wall of the main beam, and the output shaft of the motor is detachably connected to the first gear, and the first gear is rotatably connected to the inner wall of the main beam. The first gear uses the center line of the motor output shaft as the rotation axis and rotates relative to the main beam. The first rack is fixed on the inner wall of the secondary beam, and the first rack is provided along the length direction of the secondary beam, and the first gear is meshed with the first rack.

[0010] By adopting the above technical solution, the motor is connected to the first gear, and the motor is started. The motor drives the first rack to move through the first gear, thereby realizing the movement of the secondary beam relative to the main beam and the change of the total length of the entire lifting balance beam, so as to adapt to lifting sites of different sizes, provide convenience for lifting materials into the main structure, improve lifting efficiency, and save human resources.

[0011] Optionally, a counterweight box is fixed on the end of the main beam away from the secondary beam, a first lifting ear is fixed on the counterweight box, and a second lifting ear is fixed at the end of the secondary beam away from the main beam; a third lifting ear is slidably arranged on the main beam and the secondary beam, and the third lifting ear slides along the length direction of the main beam and the secondary beam; a displacement assembly is arranged on the main beam and the secondary beam, and the displacement assembly is used to drive the third lifting ear to reciprocate on the main beam and the secondary beam.

[0012] By adopting the above technical solution, the first lifting eye, the second lifting eye and the third lifting eye are arranged to form a lever that is far away from each other, so that the third lifting eye is the main force point, and then the counterweight box is used to counterweight the hoisted material, thereby improving the stability of the hoisting, and the third lifting eye can move back and forth, thereby forming different torques to meet different hoisting weights; the vector product of force and lever arm is torque, that is, M=LxF, L is the lever arm, which is the distance vector from the rotating shaft to the point of application. When the counterweight is constant, different torques can be formed by adjusting the position of the third lifting eye, thereby achieving the effect of stable hoisting of materials of different weights.

[0013] Optionally, the displacement assembly includes a hanger, a second gear and a second rack, the second gear is rotatably arranged inside the main beam, the second gear is located directly above the first gear, and the center lines of the two are colinear, the second gear rotates relative to the main beam, and the output shaft of the motor is detachably connected to the second gear; a long hole is opened on the side wall of the main beam, the long hole is opened along the length direction of the main beam and extends to the secondary beam; the hanger ring is sleeved on the outer wall of the main beam, the third ear is fixedly connected to the hanger, and a fixing rod is arranged between the hanger and the second rack, one end of the fixing rod is fixedly connected to the hanger, and the other end passes through the long hole and is fixedly connected to the second rack, the second rack is arranged parallel to the first rack, and the second rack is meshed with the second gear.

[0014] By adopting the above technical solution, the motor is disconnected from the first gear, and then the motor is connected to the second gear, and the third lifting ear is moved on the main beam or the secondary beam through the second rack, thereby realizing the position adjustment of the third lifting ear.

[0015] Optionally, a receiving groove is provided on the output shaft of the motor, and the receiving groove is provided in a direction perpendicular to the output shaft of the motor. A spring and a block are provided on the output shaft of the motor, one end of the spring is fixedly connected to the bottom of the receiving groove, and the other end is fixedly connected to the block; in the spring compression limit state, the block is completely hidden in the receiving groove; along the direction of the connection between the first gear and the second gear, the end face of the block facing away from the spring is an arc-shaped end face, the arc-shaped concave surface faces the spring, and the remaining surfaces of the block are flat surfaces; a first groove and a first partition block are provided on the inner wall of the first gear, the first groove is provided along the inner wall of the first gear, and the first partition block is fixed in the first groove; a second groove and a second partition block are provided on the inner wall of the second gear, the second groove is provided along the inner wall of the second gear, and the second partition block is fixed in the second groove; an electric cylinder is fixed on the inner wall of the main beam, one end of the electric cylinder piston rod is fixedly connected to the motor housing, and the piston rod of the electric cylinder is provided along the direction of the connection between the first gear and the second gear.

[0016] By adopting the above technical scheme, through the setting of the card block shape, and the opening of the spring and the storage groove, when the electric cylinder is started, it will drive the motor to move in the vertical direction, so that the card block is embedded in the first card slot, and then the motor is started, the card block will slide in the first card slot until it is mutually limited with the first partition block. At this time, the motor drives the first gear to rotate, thereby driving the first rack to move; start the electric cylinder again, due to the setting of the card block shape, the card block will be squeezed back into the storage groove, thereby releasing the mutual limitation between the motor and the first gear, and the card block will slide into the second card slot, forming a mutual limitation with the second partition block, so that the second gear drives the second rack to move, and the driving of two sets of structures is realized by one motor, which gives full play to the role of a single motor and saves space.

[0017] Optionally, a reinforcing rod and a paving groove are provided on the second rack, and the paving groove is opened parallel to the elongated hole and opposite to the elongated hole. One end of the reinforcing rod is located in the paving groove and is rotatably connected to the second rack, and the other end extends into the elongated hole. In the vertical direction, the heights of the reinforcing rod and the fixing rod are the same as the hole height of the elongated hole. An elastic part is fixed on the reinforcing rod, and when the elastic part is compressed, the reinforcing rod is completely received in the paving groove. The opening of the paving groove is used to prevent the reinforcing rod from hindering the sliding of the hanger.

[0018] By adopting the above technical scheme, the opening of the long hole destroys the overall structure of the main beam and the secondary beam, thereby reducing the bending resistance of the secondary beam and the main beam. The setting of the reinforcing rod has a supporting effect on the inside of the long hole, and due to the presence of the clearance groove and the elastic member, the reinforcing rod will not hinder the movement of the hanger. When the reinforcing rod comes into contact with one end of the long hole, the elastic member will be compressed, and finally the reinforcing rod will be received in the clearance groove, which not only ensures the bending resistance of the main beam and the secondary beam, but also does not affect the movement of the hanger.

[0019] Optionally, a limiting hole is opened on the bottom wall of the main beam, the limiting hole is opened along the length direction of the main beam, a bearing block is fixed on the hanger, the bearing block is located in the limiting hole, and the bearing block is abutted against the bottom wall of the secondary beam at one end away from the hanger.

[0020] By adopting the above technical solution, when the hanger slides onto the secondary beam, in order to further reduce the tension borne by the fixing rod, the bearing block is directly abutted against the bottom wall of the secondary beam, thereby increasing the connection points between the hanger and the secondary beam.

[0021] Optionally, a support leg is fixed on the bottom wall of the main beam, the support leg is located on the main beam near the secondary beam, the support leg is hollow inside, and the electric cylinder and the motor are both located inside the support leg; the output shaft of the motor passes through the support leg and is located inside the main beam; a notch is opened on the hanger, and the notch creates a clearance space when the hanger passes through the support leg.

[0022] By adopting the above technical solution, if the space in the floor allows, the setting of the legs makes it easier for the balance beam to be erected in the floor, thereby forming a lever away from the floor again, and using the legs as fulcrums to form a small lifting equipment in the floor. At the same time, the legs also provide space for the placement of motors and electric cylinders, further reducing the vertical height of the balance beam and making the balance beam more flexible to use.

[0023] Optionally, a battery is provided in the counterweight box, and the battery provides a power source for the motor and the electric cylinder.

[0024] By adopting the above technical solution, the battery not only acts as a counterweight, but also provides power energy for the motor and the electric cylinder.

[0025] In a second aspect, the present application provides a hoisting system for a retractable hoisting balance beam, which adopts the following technical solution:

[0026] A hoisting system for a telescopic hoisting balance beam comprises the following steps:

[0027] S1, an information acquisition module, used to acquire lifting information, wherein the lifting information at least includes the lifting weight at the lifting point and the moment at the lifting point;

[0028] S2, a data retrieval module, used to retrieve the database data corresponding to the lifting information;

[0029] S3, a result generation module, used to generate a comparison difference based on the lifting information and the corresponding moment information in the database and the maximum lifting weight information of the moment lower lifting point at this time, and display the difference to generate a data instruction;

[0030] S4, an alarm module, used for issuing an alarm signal according to the data instruction.

[0031] By adopting the above technical solution, when hoisting materials, the weight and torque of the hoisting materials may be adjusted to the appropriate torque later. Even after the torque adjustment and the lifting point adjustment are completed, it is still unable to bear the weight of the materials to be hoisted. That is, a data instruction is generated and passed to the alarm module, and the alarm module sounds an alarm, thereby notifying the operator to ensure construction safety.

[0032] Optionally, it also includes an information transmission module, which is used to receive data instructions and transmit them to the alarm module. The alarm module can be integrated with the data retrieval module, or located on the hoisting balance beam.

[0033] By adopting the above technical solution, the operators located below can receive the alarm information through the operating platform, and the staff cooperating with the hoisting in the building can also receive the hoisting alarm information, which provides double protection for greater safety.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The setting of the adjustment component realizes the movement of the secondary beam relative to the main beam, so that the total length of the balance beam formed by the main beam and the secondary beam can be changed, and finally the effect of coping with different sizes of hoisting sites, facilitating the hoisting of materials into the main structure, improving hoisting efficiency and saving human resources can be achieved;

[0036] 2. The setting of the displacement component realizes the movement of the third lifting eye. The third lifting eye is used as the main lifting force point. The movement of the third lifting eye changes the force arm at the material lifting point, so that it can cooperate with the counterweight box to achieve a more stable balance beam when lifting materials of different weights;

[0037] 3. The setting of the reinforcing rod enhances the connection effect between the hanger and the secondary beam, and cooperates with the clearance groove and the elastic member to ensure the movement range of the hanger, so that the reinforcing rod does not hinder the horizontal sliding of the hanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0039] Figure 2 It is a cross-sectional view to show the internal structure of the main beam and secondary beam;

[0040] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0041] Figure 4 This is a bottom view of the partial structure at the limit hole;

[0042] Figure 5 This is a partial structural diagram of the hanger after the main beam and secondary beam are hidden;

[0043] Figure 6 yes Figure 1 A partial enlarged schematic diagram of part B;

[0044] Figure 7 It is a schematic diagram of the lifting system flow.

[0045] Explanation of the reference numerals: 1. Main beam; 11. First lifting eye; 12. Second lifting eye; 13. Third lifting eye; 14. Long hole; 15. Limit hole; 16. Leg; 17. Connecting seat; 2. Secondary beam; 21. Sliding hole; 3. Adjusting assembly; 31. Motor; 311. Storage slot; 312. Spring; 313. Block; 32. First gear; 321. First slot; 322. First partition block; 33. First rack; 4. Counterweight box; 41. Battery; 5. Displacement assembly; 51. Hanger; 511. Fixed rod; 512. Bearing block; 513. Notch; 52. Second gear; 521. Second slot; 522. Second partition block; 53. Second rack; 6. Reinforcing rod; 61. Make way slot; 62. Elastic member; 7. Warning light; 8. Bearing plate; 9. Electric cylinder. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-7 This application is described in further detail.

[0047] The embodiment of the present application discloses a retractable hoisting balance beam.

[0048] refer to Figure 1 and Figure 2 A telescopic lifting balance beam includes a main beam 1 and a secondary beam 2. The main beam 1 and the secondary beam 2 are both hollow inside. One end of the secondary beam 2 is inserted into the main beam 1 and the two are connected inside. An adjustment component 3 is provided at the junction of the inner walls of the main beam 1 and the secondary beam 2. The adjustment component 3 drives the secondary beam 2 to move toward or away from the inside of the main beam 1, thereby achieving the effect of adjusting the length of the entire lifting balance beam, adapting to lifting environments of different sizes, facilitating the direct lifting of components into the interior of a building, and saving manpower.

[0049] refer to Figure 1 and Figure 2 A counterweight box 4 is fixed on the main beam 1, and the counterweight box 4 is located at the end of the main beam 1 away from the secondary beam 2. A first lifting ear 11 is fixed on the counterweight box 4, and a second lifting ear 12 is fixed on the secondary beam 2. The second lifting ear 12 is located at the end of the secondary beam 2 away from the main beam 1. A third lifting ear 13 and a displacement assembly 5 are provided on the main beam 1 and the secondary beam 2. The displacement assembly 5 carries the third lifting ear 13 to slide back and forth on the main beam 1 and the secondary beam 2; the first lifting ear 11, the second lifting ear 12 and the third lifting ear 13 are all located at the top wall of the balance beam to cooperate with an external crane and provide a lifting point for the external crane.

[0050] refer to Figure 1 A support leg 16 is fixed at the bottom of the main beam 1. When the main beam 1 is placed inside the main body of the building structure, the support leg 16 can be used as a fulcrum and, through the principle of leverage, can function as a simple lifting device.

[0051] refer to Figure 2 and Figure 3 The adjusting assembly 3 includes a motor 31, a first gear 32 and a first rack 33; the leg 16 is hollow inside, an electric cylinder 9 is fixed inside the leg 16, the electric cylinder 9 is vertically arranged, one end of the piston rod of the electric cylinder 9 is fixedly connected to the housing of the motor 31, the motor 31 is vertically arranged, the output shaft of the motor 31 passes through the leg 16 and extends into the main beam 1, a receiving groove 311 is provided on the output shaft of the motor 31, the receiving groove 311 is perpendicular to the output shaft of the motor 31, and the motor 31 is provided with Spring 312 and block 313, one end of spring 312 is fixedly connected to the bottom of the receiving groove 311, and the other end is fixedly connected to the block 313, and one end of the block 313 is always located in the receiving groove 311; along the vertical direction, the end face of the block 313 facing away from the spring 312 is an arc-shaped end face, and the arc-shaped concave surface faces the spring 312, and the remaining surfaces of the block 313 are flat surfaces, that is, the end of the block 313 facing away from the spring 312 is chamfered at the intersection of adjacent side walls in the vertical direction.

[0052] refer to Figure 2 and Figure 3 The first rack 33 is horizontally fixed on the inner wall of the secondary beam 2, and the length direction of the first rack 33 is arranged along the length direction of the secondary beam 2. A bearing plate 8 is fixed on the inner wall of the secondary beam 2, and the bearing plate 8 is horizontally arranged. The bearing plate 8 is located below the first rack 33. The first gear 32 is located on the bearing plate 8, and the first gear 32 is rotatably connected with the bearing plate 8. The rotating shaft is colinear with the output shaft of the motor 31, and the output shaft of the motor 31 passes through the bearing plate 8 and is detachably connected to the first gear 32.

[0053] refer to Figure 2 and Figure 3 A first slot 321 is provided on the inner wall of the first gear 32, and the first slot 321 is provided along the inner wall of the first gear 32. A first partition block 322 is provided on the first gear 32, and the first partition block 322 is vertically fixed in the first slot 321. The first partition block 322 is completely hidden in the first slot 321; the electric cylinder 9 is started to push the motor 31 to move upward, and the block 313 moves to the position opposite to the first slot 321 and is pushed by the spring 312. At this time, one end of the block 313 is located in the storage groove 311 and the other end is located in the first slot 321. The motor 31 is started, and the block 313 finally abuts against the first partition block 322, thereby driving the first gear 32 to rotate, and the first gear 32 meshes with the first rack 33, and finally realizes the reciprocating movement of the secondary beam 2 relative to the main beam 1.

[0054] refer to Figure 2 and Figure 3 The displacement assembly 5 includes a hanger 51, a second gear 52 and a second rack 53. A long hole 14 is provided on the main beam 1. The long hole 14 is provided along the length direction of the main beam 1 and extends to the secondary beam 2. The hanger 51 is sleeved on the outer wall of the main beam 1, and the third lifting ear 13 is fixedly connected to the outer wall of the top of the hanger 51.

[0055] refer to Figure 2 and Figure 4 A notch 513 is provided at the bottom of the hanger 51, and the length of the notch 513 is not less than the length of the leg 16 along the length direction of the vertical main beam 1, so as to ensure that the hanger 51 does not interfere with the leg 16 during the process of sliding from the main beam 1 to the secondary beam 2. A limiting hole 15 is provided on the bottom wall of the main beam 1, and the limiting hole 15 is provided along the length direction of the main beam 1, and the limiting hole 15 is opened through the end face of the main beam 1 near one end of the secondary beam 2;

[0056] refer to Figure 4 and Figure 5 The hanger 51 is provided with a fixing rod 511 and a bearing block 512. The bearing block 512 is vertically arranged. One end of the bearing block 512 is fixedly connected to the hanger 51. The bearing block 512 is located in the limiting hole 15, and the end of the bearing block 512 away from the hanger 51 abuts against the outer wall of the secondary beam 2. One end of the fixing rod 511 is fixedly connected to the hanger 51, and the other end passes through the long hole 14 and is fixedly connected to the second rack 53. The second rack 53 and the second gear 52 are both located inside the main beam 1. The second rack 53 is arranged parallel to the first rack 33, and the second rack 53 and the second gear 52 are meshed.

[0057] Replay Figure 2 and Figure 3A connecting seat 17 is provided in the main beam 1, and the connecting seat 17 is fixed on the inner wall of the top of the main beam 1. A sliding hole 21 is provided on the top of the secondary beam 2, and the sliding hole 21 is opened along the length direction of the secondary beam 2. The sliding hole 21 is opened through the end of the secondary beam 2 near one end of the main beam 1. The bottom end of the connecting seat 17 passes through the sliding hole 21 and is rotatably connected to the second gear 52. The rotating shaft is colinear with the output shaft of the motor 31. The second gear 52 is located directly above the first gear 32. A second slot 521 and a second partition block 522 are provided on the second gear 52. The second slot 521 is opened along the inner wall of the second gear 52 for a circle, and the second partition block 522 is vertically fixed in the second slot 521. The second partition block 522 is completely hidden in the second slot 521; the electric cylinder 9 is started again, pushing the motor 31 and the block 313 to move upward. The block 313 is squeezed and retracted only in the storage slot 311, and then disengages from the first gear 32 and enters the second slot 521 in the second gear 52. The motor 31 is started, and the block 313 and the second partition block 522 are limited to each other, thereby driving the second gear 52 to rotate, and driving the hanger 51 to move through the second rack 53; the movement of the second lifting ear 12 can change the torque between the material lifting point and the second lifting ear 12, and cooperate with the counterweight of the counterweight box 4 to make the balance beam more stable when the material is lifted.

[0058] refer to Figure 5 and Figure 6 A clearance groove 61 is provided on the second rack 53, and the clearance groove 61 is provided along the length direction of the second rack 53, and the clearance groove 61 is provided opposite to the elongated hole 14. A reinforcing rod 6 is provided on the second rack 53, and one end of the reinforcing rod 6 is located in the clearance groove 61 and is rotatably connected with the second rack 53. The rotating shaft is vertically arranged, and the other end of the reinforcing rod 6 is deeply inserted into the elongated hole 14, but does not protrude from the elongated hole 14. An elastic member 62 is provided between the reinforcing rod 6 and the groove wall of the clearance groove 61, and one end of the elastic member 62 is fixedly connected to the groove wall of the clearance groove 61, and the other end is fixedly connected to the reinforcing rod 6. The elastic member 62 in this embodiment can be a torsion spring, or other elastic members 62 such as a spring can be selected, wherein the elastic member 62 is located on the side of the reinforcing rod 6 close to the fixed rod 511. When the reinforcing rod 6 abuts against the end of the elongated hole 14, the elastic member 62 is compressed, and finally the reinforcing rod 6 is completely received in the clearance groove 61. The vertical heights of the reinforcing rod 6 and the fixing rod 511 are the same as the vertical height of the elongated hole 14 .

[0059] Replay Figure 2 A battery 41 is placed in the counterweight box 4, which not only serves as a counterweight, but also provides a power source for the motor 31 and the electric cylinder 9.

[0060] The embodiment of the present application also discloses a hoisting system for a telescopic hoisting balance beam.

[0061] refer to Figure 1In this application, a gravity sensor, a torque sensor and a warning light 7 are fixed on the balance beam. The operator who operates the crane to lift the balance beam below holds a digital display screen for the amount of hoisting, and the digital display screen for the amount of hoisting itself has an alarm sound.

[0062] A hoisting system for a telescopic hoisting balance beam comprises the following steps:

[0063] refer to Figure 7 S1, an information acquisition module, used to acquire lifting information, wherein the lifting information at least includes the lifting weight of the lifting point and the moment at the lifting point; the lifting information is acquired by obtaining the lifting weight of the material at the lifting point through a gravity sensor, and obtaining the moment at the lifting point through a moment sensor. The digital display screen of the lifting amount receives the lifting weight and moment of the material.

[0064] S2, a data retrieval module, is used to retrieve the database data corresponding to the lifting information; the digital display of the lifting amount retrieves from its internal the maximum lifting weight that can be lifted under the current balance beam counterweight, and whether the current torque needs to be adjusted.

[0065] S3, a result generation module, used to generate a comparison difference based on the lifting information and the corresponding moment information in the database and the maximum lifting weight information of the moment lower lifting point at this time, and display the difference to generate a data instruction;

[0066] The data instruction is passed to the information transmission module, and the information transmission module is used to receive the data instruction and transmit it to the alarm module. The alarm module can be integrated with the data retrieval module, or located on the hoisting balance beam. At this time, the alarm module integrated with the digital display screen of the hoisting quantity is the alarm sound, and the alarm module located on the balance beam is the early warning light 7. The information transmission module can transmit information by wired or wireless transmission.

[0067] S4, an alarm module, used to send out an alarm signal according to the data instruction, that is, the alarm sound emits an alarm sound and the warning light 7 flashes.

[0068] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A retractable lifting balance beam, characterized in that: The invention comprises a main beam (1) and a secondary beam (2), wherein one end of the secondary beam (2) is slidably inserted into the interior of the main beam (1), and the sliding direction is along the length direction of the main beam (1). The interiors of the main beam (1) and the secondary beam (2) are both hollow and the interiors of the two are connected. An adjustment component (3) is provided at the connecting point between the secondary beam (2) and the main beam (1), and the adjustment component (3) comprises a motor (31), a first gear (32) and a first rack (33). The motor (31) is located on the inner wall of the main beam (1), and the output shaft of the motor (31) is detachably connected to the first gear (32). The first gear (32) is rotatably connected to the inner wall of the main beam (1). The first gear (32) uses the center line of the output shaft of the motor (31) as the rotation axis and rotates relative to the main beam (1). The first rack (33) is fixed The main beam (1) and the secondary beam (2) are fixed on the inner wall of the secondary beam (2), the first rack (33) is arranged along the length direction of the secondary beam (2), and the first gear (32) is meshed with the first rack (33); a counterweight box (4) is fixed on the end of the main beam (1) away from the secondary beam (2), a first lifting lug (11) is fixed on the counterweight box (4), and a second lifting lug (12) is fixed on the end of the secondary beam (2) away from the main beam (1); a third lifting lug (13) is slidably arranged on the main beam (1) and the secondary beam (2), and the third lifting lug (13) slides along the length direction of the main beam (1) and the secondary beam (2); a displacement assembly (5) is arranged on the main beam (1) and the secondary beam (2), and the displacement assembly (5) is used to drive the third lifting lug (13) to reciprocate on the main beam (1) and the secondary beam (2); the displacement assembly (5) comprises a hanger (51), a second gear (52) and a second rack (53), wherein the second gear (52) is rotatably arranged inside the main beam (1), the second gear (52) is located directly above the first gear (32), and the center lines of the two are colinear, the second gear (52) rotates relative to the main beam (1), and the output shaft of the motor (31) is detachably connected to the second gear (52); a long hole (14) is provided on the side wall of the main beam (1), the long hole (14) is provided along the length direction of the main beam (1) and extends to the secondary beam (2); the hanger (51) is sleeved on the outer wall of the main beam (1), the third lifting ear (13) is fixedly connected to the hanger (51), a fixing rod (511) is provided between the hanger (51) and the second rack (53), and the fixing rod ( One end of the motor (311) is fixedly connected to the hanger (51), and the other end passes through the long hole (14) and is fixedly connected to the second rack (53), the second rack (53) is arranged parallel to the first rack (33), and the second rack (53) is meshed with the second gear (52); a receiving groove (311) is provided on the output shaft of the motor (31), the receiving groove (311) is provided in a direction perpendicular to the output shaft of the motor (31), a spring (312) and a clamping block (313) are provided on the output shaft of the motor (31), one end of the spring (312) is fixedly connected to the bottom of the receiving groove (311), and the other end is fixedly connected to the clamping block (313); the spring (312) is in a compression limit state, and the clamping block (313) is completely hidden in the receiving groove (311);Along the connecting direction of the first gear (32) and the second gear (52), the end surface of the block (313) facing away from the spring (312) is an arc-shaped end surface, the arc-shaped concave surface faces the spring (312), and the remaining surface of the block (313) is a flat surface; the inner wall of the first gear (32) is provided with a first slot (321) and a first partition block (322), the first slot (321) is opened along the inner wall of the first gear (32), and the first partition block (322) is fixed in the first slot (321); the inner wall of the second gear (52) is provided with a second slot (521) and a second partition block (522), the second slot (521) is opened along the inner wall of the second gear (52), and the second partition block (522) is fixed in the second slot (521); an electric cylinder (9) is fixed on the inner wall of the main beam (1); ), one end of the piston rod of the electric cylinder (9) is fixedly connected to the housing of the motor (31), and the piston rod of the electric cylinder (9) is arranged along the connecting line direction of the first gear (32) and the second gear (52); a leg (16) is fixed on the bottom wall of the main beam (1), the leg (16) is located near the secondary beam (2) of the main beam (1), the inside of the leg (16) is hollow, and the electric cylinder (9) and the motor (31) are both located in the leg (16); the output shaft of the motor (31) passes through the leg (16) and is located inside the main beam (1); a notch (513) is opened on the hanger (51), and the notch (513) is a space for the hanger (51) to make way when passing through the leg (16); a battery (41) is arranged in the counterweight box (4), and the battery (41) provides a power source for the motor (31) and the electric cylinder (9). ; 2. The retractable hoisting balance beam according to claim 1, characterized in that: The second rack (53) is provided with a reinforcing rod (6) and a clearance groove (61), the clearance groove (61) is opened in parallel with the long hole (14), and the clearance groove (61) is opened opposite to the long hole (14), one end of the reinforcing rod (6) is located in the clearance groove (61) and is rotatably connected to the second rack (53), and the other end extends into the long hole (14); in the vertical direction, the height of the reinforcing rod (6) and the fixing rod (511) is the same as the hole height of the long hole (14); an elastic member (62) is fixed on the reinforcing rod (6), and when the elastic member (62) is in a compressed state, the reinforcing rod (6) is completely received in the clearance groove (61), and the clearance groove (61) is opened to prevent the reinforcing rod (6) from hindering the sliding of the hanger (51).

3. The retractable hoisting balance beam according to claim 1, characterized in that: A limiting hole (15) is provided on the bottom wall of the main beam (1), the limiting hole (15) being provided along the length direction of the main beam (1), a bearing block (512) being fixed on the hanger (51), the bearing block (512) being located in the limiting hole (15), and an end of the bearing block (512) away from the hanger (51) being in contact with the bottom wall of the secondary beam (2).

4. A hoisting system for a telescopic hoisting balance beam, using the telescopic hoisting balance beam as claimed in claim 1, characterized in that: include: S1, an information acquisition module, used to acquire lifting information, wherein the lifting information at least includes the lifting weight at the lifting point and the moment at the lifting point; S2, a data retrieval module, used to retrieve the database data corresponding to the lifting information; S3, a result generation module, used to generate a comparison difference based on the lifting information and the corresponding moment information in the database and the maximum lifting weight information of the moment lower lifting point at this time, and display the difference to generate a data instruction; S4, an alarm module, used for issuing an alarm signal according to the data instruction.

5. The hoisting system of a telescopic hoisting balance beam according to claim 4, characterized in that: It also includes an information transmission module, which is used to receive data instructions and transmit them to the alarm module. The alarm module can be integrated with the data retrieval module, or located on the hoisting balance beam.

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