Beam type hoisting equipment

Abstract

The utility model provides beam type hoisting equipment, and relates to the technical field of hoisting equipment. The beam type hoisting equipment comprises a crane, a winch, a fixed pulley assembly, a movable pulley assembly and a carrying pole beam, and a second steel wire rope of the winch is sequentially and alternately wound around the fixed pulley assembly and the movable pulley assembly so that the movable pulley assembly can move up and down along with winding and unwinding of the second steel wire rope; the carrying pole beam can lift heavy objects along with the up-and-down movement of the first lifting hook and the movable pulley assembly. Through the arrangement of the winch and the pulley assembly, the crane only bears about half of the gravity of a heavy object, so that the application range of the crane is expanded; and one stress point of the cross beam is dispersed into two stress points, so that the bending deflection of the cross beam is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of lifting equipment, and in particular relates to a beam-type lifting device. Background Technology

[0002] Lifting machinery is an indispensable piece of equipment in industrial production and construction, responsible for hoisting and moving heavy objects. However, when performing hoisting operations inside factory buildings, especially when the objects to be hoisted are excessively heavy, space constraints make the use of large lifting equipment impractical, while the rated power of small lifting equipment is insufficient to meet the hoisting requirements. Furthermore, hoisting excessively heavy objects inside factory buildings can lead to excessive deflection of the beams. Utility Model Content

[0003] In view of this, the present invention provides a beam-type lifting device, which aims to expand the application range of small lifting devices and reduce the deflection of the crossbeam.

[0004] The technical solution of this utility model is implemented as follows:

[0005] This utility model embodiment provides a beam-type lifting device for mounting on a crossbeam, comprising: a crane, the body of which is mounted on the crossbeam; a first hook of the crane suspended below the body by a first wire rope of the crane; a winch, spaced apart from the body and mounted on the crossbeam; a fixed pulley assembly fixed to the winch; a movable pulley assembly located below the fixed pulley assembly, the movable pulley assembly having a second hook; a spreader beam, the first end of the spreader beam suspended from the first hook, the second end of the spreader beam suspended from the second hook; the middle portion of the spreader beam for suspending heavy objects; wherein, the second wire rope of the winch alternately winds around the fixed pulley assembly and the movable pulley assembly, so that the movable pulley assembly moves up and down as the second wire rope is wound and unwound; the spreader beam is capable of lifting and lowering the heavy object as the first hook and the movable pulley assembly move up and down.

[0006] In one embodiment, the fixed pulley assembly includes a first fixed frame and a plurality of fixed pulleys disposed on the first fixed frame, the first fixed frame being fixed to the winch; the movable pulley assembly includes a second fixed frame and a plurality of movable pulleys disposed on the second fixed frame, the second fixed frame being used to suspend the spreader beam; the number of fixed pulleys is odd, and the number of fixed pulleys is one more than the number of movable pulleys.

[0007] In one embodiment, the system further includes a first sling provided at a first end of the spreader beam and a second sling provided at a second end of the spreader beam, wherein both the first sling and the second sling are closed loops, respectively fitted onto a first hook and a second hook.

[0008] In one embodiment, the first end of the spreader beam is provided with two first limiting portions, the first limiting portions extending radially from the side wall of the spreader beam to prevent the first sling from detaching from the first end; and / or, the second end of the spreader beam is provided with two second limiting portions, the second limiting portions extending radially from the side wall of the spreader beam to prevent the second sling from detaching from the second end.

[0009] In one embodiment, the device further includes a first buckle and / or a second buckle, wherein: the first buckle forms two upward-facing first slots, the first buckle extends beyond the first strap, and the two first slots are correspondingly engaged with the two first limiting portions to restrict the first strap at the first end; the second buckle forms two upward-facing second slots, the second buckle extends beyond the second strap, and the two second slots are correspondingly engaged with the two second limiting portions to restrict the second strap at the second end.

[0010] In one embodiment, the spreader beam is an I-beam, and / or the first hook and the second hook are gable hooks.

[0011] In one embodiment, the winch is provided with wheels, and both the winch wheels and the crane body wheels extend into the grooves of the crossbeam to travel along the length of the crossbeam.

[0012] In one embodiment, a connecting beam is further included, one end of which is hinged to the winch and rotatable in a vertical plane relative to the winch; the other end of which is detachably connected to the vehicle body.

[0013] In one embodiment, the side wall of the vehicle body is provided with a first connecting hole, and the connecting beam is provided with a second connecting hole; the first connecting hole and the second connecting hole are for threaded fasteners to pass through in sequence so that the connecting beam is connected to the vehicle body.

[0014] In one embodiment, the system further includes a first cylinder disposed on the vehicle body and a second cylinder disposed on the winch. The first piston rod of the first cylinder and the second piston rod of the second cylinder are both capable of extending and retracting along the length of the crossbeam. A first electromagnet is disposed at the free end of the first piston rod, and a second electromagnet is disposed at the free end of the second piston rod. The magnetism of at least one of the first and second electromagnets is switchable. When the first and second electromagnets have the same magnetism, the vehicle body and the winch move away from each other; when the first and second electromagnets have opposite magnetisms, the vehicle body and the winch move closer to each other.

[0015] This utility model embodiment provides a beam-type lifting device, which includes a crane, the body of which is mounted on a crossbeam; a first hook of the crane is suspended below the body by a first wire rope of the crane; a winch is disposed on the crossbeam at a distance from the body; a fixed pulley assembly is fixed to the winch; a movable pulley assembly is located below the fixed pulley assembly, and the movable pulley assembly is provided with a second hook; a spreader beam, the first end of which is suspended from the first hook, and the second end of which is suspended from the second hook; the middle part of the spreader beam is used to suspend heavy objects; wherein, the second wire rope of the winch is alternately wound around the fixed pulley assembly and the movable pulley assembly in sequence, so that the movable pulley assembly moves up and down as the second wire rope is wound and unwound; the spreader beam can lift and lower heavy objects as the first hook and the movable pulley assembly move up and down. This embodiment of the invention, through the arrangement of the winch and pulley assembly, allows the crane to bear only about half the weight of the load, thus expanding the crane's applicability; and by distributing one stress point of the crossbeam into two stress points, the bending deflection of the crossbeam is reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the beam lifting device provided by this utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 A schematic diagram of a movable pulley assembly of an embodiment of the beam lifting device provided by this utility model;

[0020] Figure 4 This is an overall schematic diagram of another embodiment of the beam-type lifting device provided by this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Crossbeam; 2. Crane; 21. Car body; 211. First connecting hole; 22. First hook; 23. First wire rope; 3. Winch; 31. Second wire rope; 32. Wheel; 4. Fixed pulley assembly; 41. First fixed frame; 42. Fixed pulley; 421. Balance wheel; 422. Guide wheel; 5. Movable pulley assembly; 51. Second hook; 52. Second fixed frame; 53. Movable pulley; 6. Spreader beam; 61. One end; 612, First limiting part; 62, Second end; 622, Second limiting part; 63, First sling; 64, Second sling; 65, First buckle; 651, First slot; 66, Second buckle; 661, Second slot; 7, Connecting beam; 71, Second connecting hole; 8, First cylinder; 81, First piston rod; 82, First electromagnet; 9, Second cylinder; 91, Second piston rod; 92, Second electromagnet. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] When carrying out hoisting operations inside a factory building, space constraints prevent the use of large lifting equipment, while the rated power of small lifting equipment is often insufficient to meet the hoisting requirements. Furthermore, hoisting excessively heavy items inside the factory building may cause excessive deflection of the crossbeam, increasing operational risks.

[0027] Therefore, in order to solve the above problems, this utility model provides a beam-type lifting device to expand the application range of small lifting devices and reduce the deflection of the crossbeam during the hoisting process.

[0028] Please see Figure 1 The beam-type lifting equipment is installed on the crossbeam 1, which is composed of two parallel main beams and is the main load-bearing body of the entire lifting equipment, enabling the lifting equipment to move in the span direction of the factory building.

[0029] Please see Figure 1 The beam-type lifting equipment includes a crane 2, which comprises a car body 21, a first hook 22, and a first wire rope 23. A lifting mechanism is mounted on the car body 21, the first wire rope 23 is wound on the drum of the lifting mechanism, and the first hook 22 is connected to the end of the first wire rope 23. Due to the suspension effect of the first wire rope 23, the first hook 22 can be suspended below the car body 21. Furthermore, the car body 21 is mounted on a crossbeam 1, thereby enabling movement on the crossbeam 1.

[0030] Please see Figure 1 The beam-type lifting equipment also includes a winch 3, a fixed pulley assembly 4, a movable pulley assembly 5, and a spreader beam 6. The winch 3 is spaced apart from the vehicle body 21 on the crossbeam 1, the fixed pulley assembly 4 is fixed on the winch 3, the movable pulley assembly 5 is located below the fixed pulley assembly 4, and the fixed pulley assembly 4 is provided with a second hook 51.

[0031] Please see Figures 1 to 3The second wire rope 31 of the winch 3 is alternately wound around the fixed pulley assembly 4 and the movable pulley assembly 5. There are various methods for winding the movable pulley assembly 5 and the fixed pulley assembly 4. Furthermore, the number of movable pulleys 53 in the movable pulley assembly 5 and the number of fixed pulleys 42 in the fixed pulley assembly 4 can be the same or different. Both ends of the second wire rope 31 are fixed to the winch 3, and the middle portion of the second wire rope 31 is alternately wound around the movable pulley assembly 5 and the fixed pulley assembly 4, ensuring that the second wire rope 31 can be smoothly wound and released by the winch 3.

[0032] Please see Figure 1 Since the second wire rope 31 of the winch 3 alternately winds around the fixed pulley assembly 4 and the movable pulley assembly 5, the movable pulley assembly 5 can move up and down as the second wire rope 31 is wound and unwound. Furthermore, since the spreader beam 6 can move up and down as the first hook 22 and the movable pulley assembly 5 move up and down, the spreader beam 6 can be used to lift and lower heavy objects.

[0033] The vehicle body 21 of the beam-type lifting equipment of this utility model embodiment is set on the crossbeam 1; the first hook 22 of the crane 2 is suspended below the vehicle body 21 by the first wire rope 23 of the crane 2; the winch 3 is set on the crossbeam 1 at intervals from the vehicle body 21; the fixed pulley assembly 4 is fixed on the winch 3; the movable pulley assembly 5 is located below the fixed pulley assembly 4, and the movable pulley assembly 5 is provided with a second hook 51; the first end 61 of the spreader beam 6 is suspended from the first hook 22, and the second end 62 of the spreader beam 6 is suspended from the second hook 51; the middle part of the spreader beam 6 is used to suspend heavy objects; wherein, the second wire rope 31 of the winch 3 is alternately wound around the fixed pulley assembly 4 and the movable pulley assembly 5 in sequence, so that the movable pulley assembly 5 moves up and down with the winding and unwinding of the second wire rope 31; the spreader beam 6 can lift and lower heavy objects with the up and down movement of the first hook 22 and the movable pulley assembly 5. In this embodiment of the invention, the second wire rope 31 of the winch 3 is threaded through the fixed pulley assembly 4 and the movable pulley assembly 5, allowing the movable pulley assembly 5 to move up and down during the winch 3's winding and unwinding of the second wire rope 31. Furthermore, the movable pulley assembly 5 is equipped with a second hook 51, which can also move up and down. Since one end of the spreader beam 6 is suspended from the second hook 51 and the other end is suspended from the first hook 22 of the crane 2, which can move up and down, the spreader beam 6 can lift and lower heavy objects by moving up and down with the first hook 22 and the second hook 51.

[0034] Since the middle part of the spreader beam 6 in this embodiment of the invention is used to support the heavy object, and both ends of the spreader beam 6 are respectively suspended on the first hook 22 of the crane 2 and the movable pulley assembly 5, the pressure of the heavy object on the crossbeam 1 during the hoisting process is distributed to the first hook 22 of the crane 2 and the second hook 51 of the movable pulley assembly 5. Therefore, the crane 2 only needs to bear about half the weight of the heavy object, and can be used even if the rated power of the crane 2 is less than the weight of the heavy object. Thus, the applicability of the crane 2 is expanded.

[0035] Furthermore, during hoisting operations, the weight of the load is shared by both crane 2 and winch 3. Compared to a situation where only crane 2 bears the load, this beam-type lifting equipment distributes the weight of the load. For the crossbeam 1, the beam-type lifting equipment disperses the concentrated force on the crossbeam 1 into two forces. The force on the crossbeam 1 is vertically downward and perpendicular to its length. Because the force on the crossbeam 1 is dispersed, the bending deflection of the crossbeam 1 is correspondingly reduced.

[0036] Therefore, this embodiment of the invention not only expands the applicable scope of the crane 2, but also reduces the bending deflection of the crossbeam 1.

[0037] In some embodiments, please refer to Figure 2 and Figure 3 The fixed pulley assembly 4 includes a first fixed frame 41 and a plurality of fixed pulleys 42 disposed on the first fixed frame 41, which is fixed to the winch 3. The movable pulley assembly 5 includes a second fixed frame 52 and a plurality of movable pulleys 53 disposed on the second fixed frame 52, which is used to suspend the spreader beam 6. The number of fixed pulleys 42 is odd, and the number of fixed pulleys 42 is one more than the number of movable pulleys 53.

[0038] For example, Figure 2 Nine fixed pulleys were displayed. Figure 3 Eight movable pulleys are shown. The following explanation uses the fixed pulley 42 located at the upper end of the first fixed frame 41 in the fixed pulley assembly 4 as the balance wheel 421, and the two fixed pulleys 42 located at the lower end and outer side of the first fixed frame 41 as guide wheels 422. One end of the second wire rope 31 is led out from the cigarette machine, first passing around the guide wheel 422 on the side, then passing around the corresponding first movable pulley 53 below, then upwards around the second fixed pulley 42, then around the second movable pulley 53, and so on, passing around the fixed pulleys 42 and movable pulleys 53 in this order, finally returning to the winch 3 for fixing via the guide wheel 422. Using this method for the movable pulley assembly 5 and the fixed pulley assembly 4, with the central fixed pulley 42 as the balance wheel and the two side fixed pulleys 42 as guide wheels, can prevent the second fixed frame 52 from tilting, reduce the running resistance of the fixed pulley assembly 4 and the movable pulley assembly 5, and make the hoisting process more stable.

[0039] This embodiment of the invention sets the number of fixed pulleys 42 to an odd number, with one more fixed pulley 42 than movable pulleys 53. This makes the central fixed pulley 42 in the fixed pulley assembly 4 a balance wheel 421, while the fixed pulleys 42 on either side of the assembly serve as guide wheels 422. This reduces the frictional resistance of the second wire rope 31 during winding and unwinding, while also preventing the movable pulley assembly 5 from tilting, thus enhancing the stability and safety of the lifting process. Furthermore, this design of the fixed pulley assembly 4 and the movable pulley assembly 5 makes the winding of the second wire rope 31 more orderly, improving the overall working efficiency of the lifting equipment.

[0040] In some embodiments, please refer to Figure 1 The beam lifting device also includes a first sling 63 disposed at the first end 61 of the spreader beam 6 and a second sling 64 disposed at the second end 62 of the spreader beam 6. The first sling 63 is used to suspend the first hook 22, and the second sling 64 is used to suspend the second hook 51. Both the first sling 63 and the second sling 64 are closed loops, so as to be respectively fitted onto the first hook 22 and the second hook 51.

[0041] The first sling 63 and the second sling 64 can be made of high-strength, wear-resistant materials to ensure they can withstand the weight of heavy objects and maintain a stable suspension during hoisting. Furthermore, the circumference and width of the first sling 63 and the second sling 64 can be adjusted according to actual needs to accommodate the hoisting of items of different sizes and weights.

[0042] This embodiment of the invention, through the provision of a first lifting strap 63 and a second lifting strap 64, facilitates the installation and disassembly of the first hook 22, the second hook 51, and the spreader beam 6. The closed-loop design of the first lifting strap 63 and the second lifting strap 64 ensures that they are securely fitted onto the first hook 22 and the second hook 51, preventing slippage and thus improving the lifting efficiency and safety of the entire lifting equipment.

[0043] In some embodiments, see Figure 1 To reduce the risk of the first sling 63 and the second sling 64 slipping off the end of the spreader beam 6, the spreader beam 6 is provided with limiting portions. Specifically, the first end 61 of the spreader beam 6 is provided with two first limiting portions 612, which extend radially from the side wall of the spreader beam 6 to prevent the first sling 63 from detaching from the first end 61. And / or, the second end 62 of the spreader beam 6 is provided with two second limiting portions 622, which extend radially from the side wall of the spreader beam 6 to prevent the second sling 64 from detaching from the second end 62.

[0044] The sidewall of the carrying pole beam 6 can be understood as the sidewall of the carrying pole beam 6 excluding the two end faces in the length direction, that is, the sidewall of the carrying pole beam 6 surrounds the axis in the length direction of the carrying pole beam 6. The radial direction of the carrying pole beam 6 is perpendicular to the length direction of the carrying pole beam 6. The first limiting part 612 and the second limiting part 622 extend radially from the sidewall of the carrying pole beam 6, so the first limiting part 612 and the second limiting part 622 can form a ring around the length direction of the carrying pole beam 6.

[0045] This utility model embodiment provides a first limiting part 612 and a second limiting part 622 at both ends of the spreader beam 6, so that when the first sling 63 and the second sling 64 are sleeved on the first hook 22 and the second hook 51, they can be blocked by the first limiting part 612 and the second limiting part 622, thereby improving the safety of the beam lifting equipment.

[0046] In some embodiments, please refer to Figure 1 To further prevent the first sling 63 and / or the second sling 64 from detaching, the beam lifting device also includes a first latch 65 and / or a second latch 66. Specifically, the first latch 65 forms two upward-facing first slots 651. The first latch 65 extends beyond the first sling 63, and the two first slots 651 engage one-to-one with two first limiting portions 612, thereby restricting the first sling 63 to its first end 61. (See also...) Figure 3 The second buckle 66 forms two upward-facing second slots 661. The second buckle 66 passes over the second sling 64, and the two second slots 661 are engaged with the two second limiting parts 622 in a one-to-one correspondence, so that the second sling 64 is restricted to the second end 62.

[0047] It is understandable that during the hoisting process, the first sling 63 and the second sling 64 are both close to the bottom of the spreader beam 6. Therefore, the first buckle 65 and the second buckle 66 can be locked at the bottom of the spreader beam 6, reducing the risk that the first buckle 65 and the second buckle 66 will be pulled away from the spreader beam 6 by the first wire rope 23 and the second wire rope 31 respectively during the hoisting process.

[0048] Please see Figure 1 Both first slots 651 of the first buckle 65 and the second slot 661 of the second buckle 66 can be formed by bending round steel. The opening of the first slot 651 is adapted to the thickness of the first limiting part 612, and the thickness of the second slot 661 is adapted to the thickness of the second limiting part 622, so that the first buckle 65 can be tightly locked into the first limiting part 612, and the second buckle 66 can be tightly locked into the second limiting part 622.

[0049] This embodiment of the invention, through the provision of the first buckle 65 and the second buckle 66, ensures that the first sling 63 and the second sling 64, when fitted onto the first hook 22 and the second hook 51, are further secured by the first buckle 65 and the second buckle 66. This prevents the slings from falling off during hoisting due to vibration or other reasons, thereby further improving the safety and stability of the beam-type lifting equipment. Furthermore, the design of the first buckle 65 and the second buckle 66 is simple and practical, easy to install and disassemble, facilitating quick securing of the slings by operators during hoisting operations, thus improving work efficiency.

[0050] In some embodiments, please refer to Figure 1 The spreader beam 6 is an I-beam. Compared to a round steel beam, an I-beam reduces the risk of circumferential slippage of the first lifting strap 63 and the second lifting strap 64 on the spreader beam 6. Furthermore, the I-beam has a more reasonable stress distribution, evenly distributing the pressure generated by the heavy load to both flanges of the beam, thereby improving the beam's load-bearing capacity and stability.

[0051] In some embodiments, please refer to Figure 1 The first hook 22 and the second hook 51 are zigzag hooks. Due to their structural characteristics, zigzag hooks can withstand greater tensile force and are not easily deformed. The hook portion of the zigzag hook adopts a curved design, which can firmly hold the first sling 63 and the second sling 64, preventing them from slipping during lifting. Furthermore, the zigzag hooks can be made of high-strength alloy steel, which has high hardness and wear resistance, ensuring stable performance during long-term use. Therefore, this embodiment of the invention uses zigzag hooks as the first hook 22 and the second hook 51, further improving the safety and stability of the beam lifting equipment.

[0052] In some embodiments, please refer to Figure 1 To facilitate the movement of the crane 2's body 21 and the winch 3 on the crossbeam 1, the crossbeam 1 is provided with a groove extending along its length. Wheels are mounted on the bottom of the winch 3, and both the winch 3's wheels and the crane 2's body 21's wheels extend into the groove to move within it. The groove of the crossbeam 1 defines the direction of travel for the crane 2's body 21 and the winch 3's body 21, allowing them to move along the length of the crossbeam 1. Furthermore, the wheels of the crane 2 and the winch 3 roll within the groove, resulting in less friction and requiring less traction compared to sliding within the groove.

[0053] This embodiment of the utility model achieves convenient movement of the winch 3 on the crossbeam 1 by setting wheels at the bottom of the winch 3 and extending the wheels into the grooves of the crossbeam 1.

[0054] In some embodiments, please refer to Figure 1The beam-type lifting equipment also includes a connecting beam 7, one end of which is hinged to the winch 3 and rotatable in the vertical plane relative to the winch 3; the other end of the connecting beam 7 is detachably connected to the vehicle body 21. Therefore, after the other end of the connecting beam 7 is removed, the position of the winch 3 can be adjusted by slightly rotating and pulling the connecting beam 7.

[0055] Before hoisting operations, the winch 3 needs to be moved to a suitable position close to the load. The distance between the winch 3 and the crane body 21 usually needs adjustment; for example, when the load is located far to one side of the crane 2, or close to one side of the crane 2, the positions of the winch 3 and the crane body 21 need to be adjusted to center the load. Furthermore, when the load is heavy, the distance between the crane body 21 and the winch 3 needs to be increased to reduce the deflection of the crossbeam 1.

[0056] In this embodiment of the invention, a connecting beam 7 is provided, which connects the vehicle body 21 and the winch 3, so that the vehicle body 21 can drive the winch 3 to move. Furthermore, one end of the connecting beam 7 is hinged to the winch 3, and the other end is detachably connected to the vehicle body 21. By removing the end of the connecting beam 7 connected to the vehicle body 21 and pulling or pushing the connecting beam 7, the distance between the vehicle body 21 and the winch 3 can be increased or decreased, so that the deflection of the crossbeam 1 is within a reasonable range.

[0057] In some embodiments, please refer to Figure 1 The side wall of the vehicle body 21 is provided with a first connecting hole 211, and the connecting beam 7 is provided with a second connecting hole 71; the first connecting hole 211 and the second connecting hole 71 are for bolts to pass through in sequence so that the connecting beam 7 is connected to the vehicle body 21.

[0058] Specifically, the first connecting hole 211 and the second connecting hole 71 include at least the following two configurations. First, multiple first connecting holes 211 and second connecting holes 71 are respectively provided along the length of the crossbeam 1. When the distance between the winch 3 and the vehicle body 21 is different, another first connecting hole 211 is aligned with another second connecting hole 71 to allow bolts or screws to pass through for connection. Second, both the first connecting hole 211 and the second connecting hole 71 are elongated holes along the length of the crossbeam 1. When the distance between the winch 3 and the vehicle body 21 is different, the first connecting hole 211 and the second connecting hole 71 are partially misaligned to allow bolts or screws to pass through for connection.

[0059] This invention, through the provision of the first connecting hole 211 and the second connecting hole 71, allows for convenient adjustment of the distance between the winch 3 and the vehicle body 21 to accommodate the lifting needs of objects of varying weights. During the lifting process, operators can select appropriate first connecting holes 211 and second connecting holes 71 for connection based on actual conditions, ensuring that the deflection of the crossbeam 1 remains within a reasonable range, thereby improving the lifting efficiency and safety of the beam-type lifting equipment. Furthermore, the provision of the first connecting hole 211 and the second connecting hole 71 also facilitates the installation and disassembly of the connecting beam 7, enabling operators to quickly adjust the position of the winch 3 during lifting operations.

[0060] In some embodiments, please refer to Figure 4 When the load to be lifted is very heavy, the distance between the vehicle body 21 and the winch 3 needs to be sufficiently large to reduce the deflection of the crossbeam 1. Specifically, the beam-type lifting device also includes a first cylinder 8 and a second cylinder 9. The first cylinder 8 is mounted on the vehicle body 21, and the second cylinder 9 is mounted on the winch 3. Both the first cylinder 8 and the second cylinder 9 are arranged along the length of the crossbeam 1 so that each piston rod can extend and retract along the length of the crossbeam 1.

[0061] The beam lifting device also includes a first electromagnet 82 and a second electromagnet 92. The first electromagnet 82 is disposed on the piston rod of the first cylinder 8, and the second electromagnet 92 is disposed on the piston rod of the second cylinder 9. The free end of the first piston rod 81 is provided with the first electromagnet 82, and the free end of the second piston rod 91 is provided with the second electromagnet 92. The magnetism of at least one of the first electromagnet 82 and the second electromagnet 92 can be switched. Specifically, the magnetism of the first electromagnet 82 and the second electromagnet 92 can be changed by changing the direction of the internal current, and the magnetism of the two electromagnets can be controlled wirelessly. Similarly, the extension and retraction of the piston rods of the first cylinder 8 and the second cylinder 9 can also be wirelessly controlled.

[0062] When the first electromagnet 82 and the second electromagnet 92 are magnetically identical, they repel each other, causing the vehicle body 21 and the winch 3 to move away from each other. When the first electromagnet 82 and the second electromagnet 92 are magnetically opposite, they attract each other, causing the vehicle body 21 and the winch 3 to move closer together. Because the vehicle body 21 and the winch 3 can move away from each other, the deflection of the crossbeam 1 can be reduced. Furthermore, regardless of whether they are moving closer or further apart, no manual operation is required on the crossbeam 1, thus reducing the risk of lifting.

[0063] It is understandable that when the distance between the vehicle body 21 and the winch 3 is relatively large, the length of the spreader beam 6 needs to be increased. However, increasing the length of the spreader beam 6 will undoubtedly increase its deflection. Therefore, in this embodiment of the invention, a shorter spreader beam 6 is added below the original spreader beam 6. This shorter spreader beam 6 is used for hoisting heavy objects.

[0064] Since the weight of the added spreading beam 6 is much less than the weight of the load, especially when the spreading beam 6 is an I-beam, the weight of the added spreading beam 6 can be ignored for the load.

[0065] This embodiment of the utility model, through the setting of a cylinder, an electromagnet, and the addition of a spreader beam, not only reduces the deflection of the crossbeam but also avoids the risk of personnel operating on the crossbeam.

[0066] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A beam-type lifting device, used for mounting on a crossbeam, characterized in that, The beam-type lifting equipment includes: A crane, the body of which is mounted on the crossbeam; the first hook of the crane is suspended below the body by the first wire rope of the crane; A winch is provided on the crossbeam at a distance from the vehicle body; A fixed pulley assembly is fixed to the winch; A movable pulley assembly is located below the fixed pulley assembly, and the movable pulley assembly is provided with a second hook; A carrying pole beam, wherein the first end of the carrying pole beam is suspended from the first hook, and the second end of the carrying pole beam is suspended from the second hook; the middle part of the carrying pole beam is used to suspend heavy objects; The second wire rope of the winch is alternately wound around the fixed pulley assembly and the movable pulley assembly in sequence, so that the movable pulley assembly moves up and down as the second wire rope is wound and unwound; the spreader beam can lift the heavy object as the first hook and the movable pulley assembly move up and down.

2. The beam lifting device according to claim 1, characterized in that, The fixed pulley assembly includes a first fixed frame and a plurality of fixed pulleys disposed on the first fixed frame, the first fixed frame being fixed to the winch; the movable pulley assembly includes a second fixed frame and a plurality of movable pulleys disposed on the second fixed frame, the second fixed frame being used to suspend the spreader beam; The number of fixed pulleys is odd, and the number of fixed pulleys is one more than the number of movable pulleys.

3. The beam lifting device according to claim 1, characterized in that, It also includes a first lifting strap disposed at the first end of the spreader beam and a second lifting strap disposed at the second end of the spreader beam, wherein the first lifting strap and the second lifting strap are both closed loops, so as to be respectively fitted onto the first hook and the second hook.

4. The beam lifting device according to claim 3, characterized in that, The first end of the carrying pole beam is provided with two first limiting parts, the first limiting parts extending radially from the side wall of the carrying pole beam to prevent the first sling from detaching from the first end; and / or, The second end of the spreader beam is provided with two second limiting parts, which extend radially from the side wall of the spreader beam to prevent the second sling from detaching from the second end.

5. The beam lifting device according to claim 4, characterized in that, It also includes a first buckle and / or a second buckle, wherein: The first buckle forms two upward-facing first slots. The first buckle extends beyond the first strap, and the two first slots are engaged with the two first limiting parts in a one-to-one correspondence, so that the first strap is restricted at the first end. The second buckle forms two upward-facing second slots. The second buckle extends beyond the second strap, and the two second slots are engaged with the two second limiting portions in a one-to-one correspondence, so that the second strap is restricted at the second end.

6. The beam lifting device according to claim 3, characterized in that, The spreader beam is an I-beam, and / or the first hook and the second hook are gable hooks.

7. The beam lifting device according to claim 1, characterized in that, The winch is equipped with wheels, and both the winch wheels and the crane body wheels extend into the grooves of the crossbeam to travel along the length of the crossbeam.

8. The beam lifting equipment according to claim 1, characterized in that, It also includes a connecting beam, one end of which is hinged to the winch and rotatable in a vertical plane relative to the winch; the other end of which is detachably connected to the vehicle body.

9. The beam lifting device according to claim 8, characterized in that, The side wall of the vehicle body is provided with a first connecting hole, and the connecting beam is provided with a second connecting hole; the first connecting hole and the second connecting hole are for threaded fasteners to pass through in sequence so that the connecting beam is connected to the vehicle body.

10. The beam lifting device according to claim 1, characterized in that, It also includes a first cylinder disposed on the vehicle body and a second cylinder disposed on the winch, wherein the first piston rod of the first cylinder and the second piston rod of the second cylinder are both capable of extending and retracting along the length direction of the crossbeam; The free end of the first piston rod is provided with a first electromagnet, and the free end of the second piston rod is provided with a second electromagnet. The magnetism of at least one of the first electromagnet and the second electromagnet can be switched. Specifically, when the first electromagnet and the second electromagnet have the same magnetic properties, the vehicle body and the winch move away from each other; when the first electromagnet and the second electromagnet have opposite magnetic properties, the vehicle body and the winch move closer to each other.

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