Tubular part crane sling convenient to feed

Abstract

The invention discloses a tubular part crane sling convenient to feed, relates to the field of hoisting equipment, and aims to solve the problems that tubular parts are easily inclined in the hoisting process due to improper clamping, so that the tubular parts are separated from clamping equipment, and the hoisting efficiency and construction safety of the tubular parts are influenced. A lifting table is connected to the rack in a sliding mode, a lifting roller and a lifting rope are arranged on the lifting table, a lifting plate is connected to the lifting rope, balance tractors synchronously ascending and descending with the lifting plate are arranged on the two sides of the lifting plate, the balance tractors are connected with the rack in a sliding mode, and a pipeline clamping device is fixedly connected to the lower end of the lifting plate. The hoisting device has the advantages that the tubular part is kept in a horizontal hoisting state in the hoisting process through the balance tractor and the pipeline balancers, the tubular part is prevented from inclining and disengaging in the hoisting process, and the hoisting efficiency and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, in particular to a crane hoisting device for a tubular member which is convenient for loading materials. Background Art

[0002] In the industrial production process, tubular parts are a common structural component and are widely used in many fields such as automobiles, aerospace, and mechanical manufacturing. Tubular parts usually have a circular cross-section, and their curved surface structure allows the clamp and the tubular part to be in line contact when fixed. This line contact method results in relatively small friction between the clamp and the tubular part, making it difficult to provide sufficient fixing force. Especially during the lifting process, if the clamp is not accurately fixed at the center of the tubular part, the tubular part will tilt due to the different lengths at both ends of the tubular part. In addition, the existing lifting equipment is vertical lifting. During the lifting process, due to factors such as its own moving inertia, the tubular part will swing to a certain extent; the tilted transportation state of the tubular part, coupled with the shaking lifting environment, will cause the tubular part to detach from the clamp, which not only affects production efficiency, but also poses a safety hazard to equipment and operators.

[0003] The patent with application number "CN202410871357.0" discloses "a crane sling for lifting tubular parts, wherein the lower surface of the support plate is provided with a plurality of cross bars which are arranged in an orderly manner along the length direction of the support plate and are parallel to each other, and the lower surface of each cross bar is provided with a leg A and a leg B which can move synchronously toward or away from each other along the length direction of the cross bar, and a plurality of legs A on the same side are provided with an arc-shaped shovel plate A facing the side of the leg B, and a plurality of legs B on the same side are provided with an arc-shaped shovel plate B which is arranged mirror-symmetrically with the arc-shaped shovel plate A on the side of the leg A, and a driving mechanism drives a plurality of legs A and legs B on the same side to move synchronously toward or away from each other, thereby driving the arc-shaped shovel plates A and arc-shaped shovel plates B. The scooping, clamping or lowering operation of the tubular parts; compared with the traditional lifting operation, this application has improved the lifting efficiency and safety of the tubular parts to a certain extent. However, in the display operation, the length of the lifting tool is much smaller than the length of the tubular parts. During the lifting process, it is impossible to accurately ensure that the lifted tubular parts are always tilted toward one side of the limit baffle. If the tilting direction is opposite, there will still be a risk of the tubular parts falling. In addition, when lifting longer tubular parts, the weight of the tubular parts themselves is already increasing. At this time, in order to balance its own weight, a counterweight plate is added to the limit baffle. This increases the additional load of the lifting device, limits the lifting range of the equipment, and is not conducive to improving the lifting efficiency of the equipment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a crane hoist for tubular parts that is easy to load. This design effectively solves the problem that tubular parts are easily tilted during the lifting process due to improper clamping, causing the tubular parts to separate from the clamping equipment, affecting the lifting efficiency of the tubular parts and the construction safety.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the present invention comprises a frame, a lifting platform is slidably connected to the frame, a lifting roller and a lifting rope are arranged on the lifting platform, a hanging plate is connected to the lifting rope, a balancing tractor which is synchronously lifted and lowered with the hanging plate is arranged on both sides of the hanging plate, the balancing tractor is slidably connected to the frame, a pipe clamp is fixedly connected to the lower end of the hanging plate, pipe balancers are arranged on both sides of the pipe clamp, and the pipe balancer is slidably connected to the hanging plate; The balancing tractor comprises a balancing roller, the balancing roller is rotatably connected to the frame, a balancing rope is matched on the balancing roller, a first fixed pulley is matched in the middle of the balancing rope, a first support rod is rotatably connected to the first fixed pulley, the first support rod is slidably connected to the frame, a first telescopic rod is matched on the frame and the first support rod, a first movable pulley matched with the balancing rope is rotatably connected on the hanging plate, and the other end of the balancing rope passes over the first fixed pulley and the first movable pulley and is fixedly connected to the frame; The pipe clamp comprises a left bracket and a right bracket, the upper ends of the left bracket and the right bracket are respectively hinged on both sides of the hanging plate, the lower ends of the left bracket and the right bracket are fixedly connected with a first support rod and a second support rod, the first support rod is an L-shaped structure, the second support rod is a T-shaped structure, the second support rod is located above the first support rod, a pressing plate is provided in the middle of the two second support rods, the pressing plate is located above the second support rod, and a lifting platform is installed between the pressing plate and the hanging plate; The pipeline balancer includes an outer frame, in which two relatively rotatable steel hoops are rotatably connected, a plurality of guide rods are provided on both sides of the steel hoops, the guide rods are fixedly connected to the outer frame, the outer sides of the two steel hoops are fixedly connected to limiting blocks, and a pipe groove is provided on the outer frame inside the steel hoop.

[0006] Preferably, side support rods are fixedly connected on both sides of the frame, sleeves are slidably connected to the side support rods, the sleeves are fixedly connected to the first support rod, the sleeves are hinged to the first telescopic rod, a connecting rod is hinged at the other end of the first telescopic rod, and both ends of the connecting rod are fixedly connected to the frame and the side support rods, respectively.

[0007] Preferably, the frame includes a crossbeam, the crossbeam is slidably connected to the lifting platform, a reinforcement beam is fixedly connected above the crossbeam, movable legs are fixedly connected at both ends of the crossbeam, sliding rollers are rotatably connected to the movable legs, and the sliding rollers are located below the balance rope.

[0008] Preferably, the lifting platform is rotatably connected to a second fixed pulley, the hanging plate is rotatably connected to two symmetrically distributed second movable pulleys, and the lifting rope is passed around the two second movable pulleys and the second fixed pulley in series.

[0009] Preferably, the lower end of the lifting rope is equipped with a connecting frame, a connecting column is rotatably connected in the connecting frame, the connecting column is fixedly connected to the hanging plate, a limiting plate is fixedly connected to the connecting column, the limiting plate is located on the connecting frame, a guide groove is provided on the limiting plate, a guide pin is slidably connected in the guide groove, and the guide pin is fixedly connected to the connecting frame.

[0010] Preferably, a second telescopic rod is hinged on the left bracket and the right bracket, the other end of the second telescopic rod is hinged to the hanging plate, a second support rod is fixedly connected to the left bracket and the right bracket, a plurality of through holes are provided on the second support rod for the second support rod to pass through, and a fixing bolt for fixing the second support rod is installed on the second support rod.

[0011] Preferably, the lifting platform includes an adjusting screw rod, two sliders that are threadedly connected at both ends of the adjusting screw rod and that are movable relative to each other, the sliders being rotatably connected to the hanging plate, a third telescopic rod being fixedly connected below the two sliders, the lower ends of the third telescopic rods being fixedly connected to the pressure plate, a groove being provided on the pressure plate, and a position of the groove corresponding to that of the second support rod.

[0012] Preferably, the two steel hoops are provided with tooth grooves, and the upper ends of the two groups of tooth grooves are meshed with a first gear and a second gear that rotate relatively, the first gear is fixedly connected to a driving shaft, the driving shaft is rotatably connected to a shaft sleeve, the shaft sleeve is fixedly connected to the second gear, and a bevel gear set is fixedly connected to the shaft sleeve and the driving shaft.

[0013] Preferably, the inner sides of the two groups of outer frames are fixedly connected with third support rods, the third support rods are slidably connected with the hanging plate, a fourth telescopic rod is installed between the outer frame and the hanging plate, and the two groups of third support rods are staggered.

[0014] Preferably, a fourth support rod is fixedly connected to the middle of the two groups of outer frames, and the fourth support rod passes through the hanging plate and is slidably connected to the hanging plate.

[0015] Compared with the prior art, the present invention has the following outstanding advantages: The present invention uses a balancing tractor to keep the hanging plate balanced during the lifting process, reduce the inclination and shaking of the hanging plate during the lifting process, thereby avoiding the situation where the tubular part and the clamp are separated due to shaking, and ensure the stability of the lifting process.

[0016] The present invention provides sliding pipe balancers on both sides of the hanging plate. When the position of the pipe clamp fixing the tubular member deviates from the center of the tubular member, the pipe balancer can translate relative to the pipe clamp. The pipe balancer is away from the pipe clamp to support the longer side of the tubular member, thereby preventing the tubular member from tilting during hoisting and ensuring smooth lifting operation.

[0017] The pipe clamp of the present invention comprises a first support rod, a second support rod and a pressure plate, which play a role of squeezing and fixing the surroundings of the tubular member, thereby increasing the effective area of ​​the pipe clamp relative to the tubular member, improving the firmness of the fixing of the pipe clamp, and preventing the tubular member from detaching during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall axial side structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the forward structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the connection structure of the movable support leg of the present invention.

[0021] Figure 4 It is a schematic diagram of the connection structure of the lifting platform of the present invention.

[0022] Figure 5 It is a schematic structural diagram of the bottom end portion of the lifting platform of the present invention.

[0023] Figure 6 This is a schematic diagram of the hanging plate connection structure in Example 1 of the present invention.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the connecting column of the present invention.

[0025] Figure 8 It is a schematic diagram of the left side structure of the pipe clamp of the present invention.

[0026] Fig. 9 It is a partial structural schematic diagram of the pipe clamp of the present invention.

[0027] Fig.10 This is a schematic diagram of the first support rod connection structure of the present invention.

[0028] Fig.11 It is a schematic diagram of the connection structure of the lifting platform of the present invention.

[0029] Fig.12 It is a schematic diagram of the axial side structure of the outer frame of the present invention.

[0030] Fig.13 It is a schematic diagram of the left side mechanism of the outer frame of the present invention.

[0031] Fig.14For the present invention Fig.12 Schematic diagram of the enlarged structure of A.

[0032] Fig.15 This is a schematic diagram of the hanging plate connection structure in Example 2 of the present invention.

[0033] Numbers in the figure: 1, frame; 101, crossbeam; 102, reinforcement beam; 103, mobile support foot; 104, sliding roller; 2, lifting platform; 3, lifting roller; 4, lifting rope; 5, hanging plate; 6, balancing tractor; 601, balancing roller; 602, balancing rope; 603, first fixed pulley; 604, first support rod; 605, first telescopic rod; 606, first movable pulley; 7, pipe clamp; 701, left bracket; 702, right bracket; 703, first support rod; 704, second support rod; 705, pressure plate; 706, lifting platform; 8, pipe balancer; 801, outer frame; 802, steel hoop; 80 3. Guide rod; 804. Limit block; 805. Pipe groove; 9. Side support rod; 10. Sleeve; 11. Connecting rod; 12. Second fixed pulley; 13. Second movable pulley; 14. Connecting frame; 15. Connecting column; 16. Limit plate; 17. Guide groove; 18. Guide pin; 19. Second telescopic rod; 20. Second support rod; 21. Adjusting screw rod; 22. Sliding block; 23. Third telescopic rod; 24. Groove; 25. Tooth groove; 26. First gear; 27. Second gear; 28. Drive shaft; 29. ​​Bushing; 30. Bevel gear set; 31. Third support rod; 32. Fourth telescopic rod; 33. Fourth support rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example 1

[0035] Please see attached Figure 1-14 The present embodiment is a crane sling for tubular parts that is easy to load: it includes a frame 1, a lifting platform 2 is slidably connected to the frame 1, the lifting platform 2 is provided with a lifting roller 3 and a lifting rope 4, a hanging plate 5 is connected to the lifting rope 4, and balancing traction devices 6 that are synchronously lifted and lowered with the hanging plate 5 are provided on both sides of the hanging plate 5, the balancing traction devices 6 are slidably connected to the frame 1, and a pipe clamp 7 is fixedly connected to the lower end of the hanging plate 5, and pipe balancers 8 are provided on both sides of the pipe clamp 7, and the pipe balancer 8 is slidably connected to the hanging plate 5.

[0036] The frame 1 is the supporting and load-bearing component of the entire device. The frame 1 has the same structure as the frame 1 in the existing lifting equipment. There are an operating room and escalator components in the frame 1, and there is a control system in the operating room. The lifting platform 2 can move left and right on the crossbeam 101 of the frame 1. The lifting roller 3 and the lifting rope 4 in the lifting platform 2 control the lifting and lowering of the hanging plate 5. The driving device of the lifting roller 3 is the same as the components on the existing lifting equipment. The lifting roller 3 is rotatably connected to the lifting platform 2. There is a limiting component in the driving device. The limiting component can play a fixing role after the lifting roller 3 reels or releases the lifting rope 4, thereby ensuring that the lifting height of the hanging plate 5 is controlled by the length of the lifting rope 4. There are balancing tractors 6 on the left and right sides of the hanging plate 5. The two balancing tractors 6 provide horizontal traction on both sides of the hanging plate 5, and the directions of the two traction forces are opposite. During the lifting process, the hanging plate 5 is guaranteed to rise and fall horizontally to avoid the hanging plate 5 from tilting or flipping sideways. The pipe clamp 7 is located directly below the hanging plate 5. The center of the pipe clamp 7 and the center of the hanging plate 5 are on the same vertical line, and the pipe clamp 7 fixes the tubular member. The length of the pipe clamp 7 is the same as the length of the hanging plate 5. There are two pipe balancers 8, which are respectively located on the left and right sides of the pipe clamp 7, and the length of the pipe balancer 8 relative to the pipe clamp 7 is adjustable. When clamping the tubular member, if the fixed position of the pipe clamp 7 is close to the left side of the tubular member, the right pipe balancer 8 can be adjusted to the right away from the pipe clamp 7, so that the right side of the tubular member also has a certain support to avoid the tubular member from being deflected during the lifting process. On the contrary, if the fixed position of the pipe clamp 7 is close to the right side of the tubular member, the left pipe balancer 8 is adjusted to the left away from the pipe clamp 7. Through the two pipe balancers 8 on both sides, the point of action of the tubular member during the lifting process is relatively close to the center position of the tubular member to avoid the tilting state of the tubular member during the lifting process and ensure the safety of the lifting operation.

[0037] The balancing traction device 6 includes a balancing roller 601, which is rotatably connected to the frame 1, and is equipped with a balancing rope 602. A first fixed pulley 603 is equipped in the middle of the balancing rope 602, and a first support rod 604 is rotatably connected to the first fixed pulley 603. The first support rod 604 is slidably connected to the frame 1, and a first telescopic rod 605 is equipped on the frame 1 and the first support rod 604. A first movable pulley 606 that cooperates with the balancing rope 602 is rotatably connected to the hanging plate 5, and the other end of the balancing rope 602 passes around the first fixed pulley 603 and the first movable pulley 606 and is fixedly connected to the frame 1.

[0038] The first telescopic rod 605 is a hydraulic rod, the first telescopic rod 605 is connected to a hydraulic pump, the first telescopic rod 605 is controlled by a hydraulic system, the extension and retraction of the first telescopic rod 605 and the rotation of the lifting roller 3 are synchronously controlled by the control system of the control room, under the control of the control system, the first telescopic rod 605 controls the lifting height of the first support rod 604 to be consistent with the lifting height of the lifting roller 3 to control the lifting height of the hanging plate 5, the head end of the balance rope 602 is connected to the upper end of the frame 1, the tail end of the balance rope 602 is connected to the balance roller 601, and the balance roller 601 is also installed at the upper end of the frame 1, the middle part of the balance rope 602 is passed around the first fixed pulley 603 and the first movable pulley 606 respectively, the overall connection structure of the balance rope 602 is L-shaped, and the balance ropes 602 on the first fixed pulley 603 and the second fixed pulley 12 are both double-stranded, The first fixed pulley 603 is located on the support rod. The first fixed pulley 603 changes the direction of the traction force of the balance rope 602. The first movable pulley 606 allows the two balance ropes 602 to share the horizontal force of the hanging board 5. Within the range of tension that the balance rope 602 can withstand, a larger horizontal force can be offset. When the height of the hanging board 5 needs to be adjusted, the lifting rope 4 is first used to adjust the lifting of the hanging board 5. While the hanging board 5 is lifted or lowered, the position of the first support rod 604 and the first fixed pulley 603 is changed by the length of the first telescopic rod 605 to ensure that the first support rod 604 and the hanging board 5 are at the same height. As the position of the first fixed pulley 603 changes, the balance roller 601 will wrap around the balance rope 602. The rotation of the balance roller 601 helps the smooth movement of the balance rope 602 while maintaining the stability and balance of the system.

[0039] The pipe clamp 7 includes a left bracket 701 and a right bracket 702, the upper ends of the left bracket 701 and the right bracket 702 are respectively hinged on both sides of the hanging plate 5, and the lower ends of the left bracket 701 and the right bracket 702 are fixedly connected with a first support rod 703 and a second support rod 704, the first support rod 703 is an L-shaped structure, the second support rod 704 is a T-shaped structure, the second support rod 704 is located above the first support rod 703, and a pressure plate 705 is provided in the middle of the two second support rods 704, and the pressure plate 705 is located above the second support rod 704, and a lifting platform 706 is installed between the pressure plate 705 and the hanging plate 5.

[0040] The left bracket 701 and the right bracket 702 are respectively located at the front and rear sides of the hanging plate 5. The upper ends of the left bracket 701 and the right bracket 702 are hinged to the hanging plate 5 through a connecting shaft. The first support rod 703 at the lower end of the left bracket 701 and the right bracket 702 is an L-shaped structure. In this way, when the left bracket 701 and the right bracket 702 support the tubular member, the first support rod 703 at the lower end of the left bracket 701 and the right bracket 702 provides sealing support to the bottom of the pipeline. There are multiple first support rods 703, and the first support rods 703 on the left bracket 701 and the right bracket 702 are staggered with each other. When the left bracket 701 and the right bracket 702 are meshed with each other, the two first support rods 703 will not interfere with each other. The second support rod 704 is located above the first support rod 703. The second support rod 704 is a T-shaped structure. The second support rod 704 limits the side of the tubular member. The second support rods 704 on the left bracket 701 and the right bracket 702 are located between the pressure plate 705 and the first support rod 703. The pressure plate 705 limits the upper end of the tubular member. The distance between the pressure plate 705 and the bottom of the first support rod 703 and the distance between the two second support rods 704 are The spacing can be adjusted manually, so as to ensure that the surroundings of the tubular member are well limited when the tubular member is fixed, increase the contact area between the tubular member and the pipe clamp 7, improve the friction resistance between the two, and ensure the stability of the lifting process; before using the pipe clamp 7, ensure that the hanging plate 5, the left bracket 701, the right bracket 702, the first support rod 703, the second support rod 704, the pressing plate 705 and the lifting platform 706 are intact and firmly connected, and then adjust the height of the lifting platform 706 according to the diameter of the pipe to be clamped. The degree is adjusted so that the pressure plate 705 can fit exactly on the pipeline, and the pipeline is placed between the left bracket 701 and the right bracket 702. The hanging plate 5 is gradually lowered so that the left bracket 701 and the right bracket 702 gradually approach the pipeline. When the lowest end of the first support rod 703 at the lower end of the left bracket 701 and the right bracket 702 is located at the bottom of the tubular component, the left bracket 701 and the right bracket 702 are close to each other. At this time, the pressure plate 705, the first support rod 703 and the second support rod 704 have a perfect limiting effect on the surroundings of the tubular component to ensure the stability and safety of the pipeline.

[0041] The pipeline balancer 8 includes an outer frame 801, in which two relatively rotatable steel hoops 802 are rotatably connected, and multiple guide rods 803 are provided on both sides of the steel hoop 802. The guide rods 803 are fixedly connected to the outer frame 801, and the outer sides of the two steel hoops 802 are fixedly connected to limiting blocks 804. A pipe groove 805 is provided on the outer frame 801 inside the steel hoop 802.

[0042] The pipe groove 805 is located in the middle of the outer frame 801, and the center of the pipe groove 805 is aligned with the center of the pipe clamp 7. The outer frame 801 and the hanging plate 5 can be slidably adjusted. There are two steel hoops 802 in the outer frame 801, and the two steel hoops 802 rotate relative to each other. There are openings below the two steel hoops 802 that are the same as the pipe groove 805. The pipe groove 805 is used to fix the tubular member. When the hanging plate 5 descends, the outer frame 801 moves downward synchronously with the hanging plate 5. When the left bracket 701 and the right bracket 702 fall relative to the tubular member, the pipe groove 805 is opposite to the position of the tubular member. When the left bracket 701 and the right bracket 702 are clamped to each other, the two steel hoops 802 on the outer frame 801 rotate relative to each other, thereby sealing the opening below the pipe groove 805. Both the inner and outer sides of the steel hoops 802 have The guide rod 803 plays a supporting and guiding role for the steel hoop 802, and the outer sides of the two steel hoops 802 are connected to the limiting blocks 804. After the steel hoop 802 rotates a certain angle, the guide rod 803 blocks the limiting blocks 804, thereby preventing the steel hoop 802 from rotating in a large range. At the same time, the cooperation between the limiting blocks 804 and the guide rod 803 can increase the upward force of the steel hoop 802 and prevent the two steel columns from being damaged in the process of supporting the bottom of the tubular member; when the tubular member needs to be fixed, the two steel hoops 802 will rotate relative to each other, gradually approach and clamp the tubular member, and due to the design of the pipe groove 805, the tubular member will be firmly fixed in the position between the two steel hoops 802, and due to the existence of the guide rod 803 and the limiting blocks 804, the rotation process of the steel hoop 802 will remain stable and safe.

[0043] There are two side support rods 9 inclined outward on both sides of the frame 1. The two side support rods 9 are provided with sleeves 10 sliding along the side support rods 9. The two sleeves 10 are located on both sides of the first support rod 604. The upper ends of the side support rods 9 are fixedly connected to the upper end of the frame 1 through a connecting rod 11. The side support rods 9, the connecting rods 11 and the frame 1 form a triangular structure, which increases the stability and supporting capacity of the side of the frame 1. At the same time, the first telescopic rod 605, the first support rod 604 and the balancing roller 601 are located on the outside of the frame 1, which will not affect the hoisting work in the middle of the frame 1, which is conducive to the smooth progress of the hoisting operation.

[0044] In order to improve the stability of the cross beam 101 in the frame 1, a reinforcing beam 102 is installed above the cross beam 101. The reinforcing beam 102 is installed in a triangular shape above the cross beam 101. The compressive strength of the cross beam 101 is increased by the triangular structure. In addition, both ends of the cross beam 101 are movable feet 103. The movable feet 103 move with the ground rail. After the tubular member is lifted, the tubular member can be translated along the ground rail. The bottom end of the side support rod 9 is not located at the bottom of the movable foot 103. When the height of the hanging plate 5 is lower than When the side support rod 9 is at the lower end, at this time, the crossbeam 101 of the movable support leg 103 has a shielding effect on the balance rope 602. In order to make the balance rope 602 have an oblique transition, a sliding roller 104 is installed on the movable support leg 103. The sliding roller 104 cooperates with the balance rope 602 to achieve a smooth transition for the balance rope 602. At this time, the hanging plate 5 and the balance ropes 602 on both sides are in a V-shaped structure. In this way, when the hanging plate 5 is in a lower position, the balance rope 602 will not affect the workers' operation under the frame 1.

[0045] The head end and the tail end of the lifting rope 4 are both located on the lifting platform 2. Under the action of the second fixed pulley 12 and the two second movable pulleys 13, one lifting rope 4 is connected to four strands of wire at the hanging plate 5, thereby improving the stability of the lifting of the hanging plate 5. At the same time, the two second movable pulleys 13 can reduce the stress level of each lifting rope 4, so that the lifting roller 3 and the lifting rope 4 have a larger lifting range.

[0046] The lower end of the lifting rope 4 is connected to the connecting frame 14, and the connecting frame 14 is an intermediate structure for transmitting the tension of the lifting rope 4 to the hanging plate 5. The connecting frame 14 is rotatably connected with a connecting column 15, and the connecting column 15 can rotate in the connecting frame 14. The connecting column 15 is fixedly connected to the hanging plate 5, so when the connecting column 15 moves, the hanging plate 5 will also rotate accordingly. The limit plate 16 is fixedly connected to the connecting column 15 and is located above the connecting frame 14. The cooperation of the guide pin 18 and the guide groove 17 in the limit plate 16 is to limit the rotation range of the connecting column 15 to prevent it from excessively rotating and causing the hanging plate 5 is out of control, the guide pin 18 is slidably connected in the guide groove 17 and is fixedly connected to the connecting frame 14, so that when the connecting frame 14 moves relative to the connecting column 15, the guide pin 18 will slide in the guide groove 17, thereby maintaining a stable connection between the two. The connecting column 15 is provided with a driving and locking mechanism, and the driving and locking mechanism is used for the rotation and fixation of the connecting column 15. The rotation of the connecting column 15 drives the rotation of the hanging plate 5, and the rotation of the hanging plate 5 drives the rotation of the pipe clamp 7 and the pipe balance. When hoisting the tubular member, the left and right swing angles of the tubular member can be adjusted, which is convenient for hoisting and stacking of the tubular member.

[0047] A second telescopic rod 19 is hinged on the left bracket 701 and the right bracket 702. In order to ensure the balance of the left and right sides of the hanging plate 5, the two second telescopic rods 19 are respectively located on the left and right sides of the hanging plate 5. The second telescopic rod 19 is hydraulically controlled and hinged. The clamping or loosening state of the left bracket 701 and the right bracket 702 is adjusted by the extension and contraction of the second telescopic rod 19. The second support rod 20 is placed horizontally, and the second support rod 704 can slide back and forth in the through hole of the second support rod 20. The distance between the two second support rods 704 can be adjusted by sliding the second support rod 704. When fixing the tubular member, it is ensured that the two second support rods 704 can press the two sides of the tubular member. The second support rod 704 and the second support rod 20 are fixed by fixing bolts.

[0048] The pressing plate 705 is an inverted L-shaped structure. The groove 24 of the pressing plate 705 corresponds to the second support rod 704. The lifting platform 706 on the upper side of the pressing plate 705 is used to adjust the height of the pressing plate 705. There are two groups of pressing plates 705, and there are also two groups of corresponding third telescopic rods 23. The third telescopic rod 23 is the same as the first telescopic rod 605 and the second telescopic rod 19, and is also hydraulically controlled. The two sliders 22 at the upper ends of the two third telescopic rods 23 slide back and forth between the hanging plate 5. At the same time, the adjusting screw on the hanging plate 5 is rotatably connected to the hanging plate 5. There are two sections of thread grooves with different rotation directions on the adjusting screw. The two sliders 22 are respectively threadedly connected to these two sections of different thread grooves. In the process of rotating the adjusting screw 21, the two pressing plates 705 are relatively close to or away from each other. In this way, when facing tubular parts with different apertures, the pressing plate 705 and the second support rod 704 can both play a good fixing effect.

[0049] The two pipe balancers 8 are respectively connected to the third support rod 31 and the fourth telescopic rod 32. The two pipe balancers 8 can be controlled separately, so that the width of the clamped tubular member can be increased or reduced in terms of maximum length. The bevel gear set 30 on the outer frame 801 is composed of three bevel gears meshing with each other. The middle bevel gear is connected to a motor, and the two bevel gears at both ends are driven by the middle bevel gear to rotate relative to each other. The two bevel gears at both ends are fixedly connected to the drive shaft 28 and the shaft sleeve 29 respectively, thereby driving the drive shaft 28 and the shaft sleeve 29 to rotate synchronously in the opposite direction. The shaft sleeve 29 is fixedly connected to the second gear 27, and the drive shaft 28 is fixedly connected to the first gear 26. The first gear 26 and the second gear 27 have the same size. The drive shaft 28 and the shaft sleeve 29 drive the second gear 27 and the first gear 26 to rotate synchronously in the opposite direction. The rotation of the first gear 26 and the second gear 27 drives the two steel hoops 802 to rotate synchronously in the opposite direction through the tooth groove 25. Example 2

[0050] The structure is the same as the above embodiment. Fig.15As shown, the specific difference of this embodiment is that: the middle parts of the two groups of outer frames 801 are fixedly connected with fourth support rods 33 , and the fourth support rods 33 penetrate the hanging plate 5 and are slidably connected with the hanging plate 5 .

[0051] The fourth support rod 33 connects the two pipe balancers 8 together, so that when the tubular member is fixed, the clamping width on the tubular member remains unchanged, and when the pipe clamp 7 is fixed at the left side of the tubular member, when the pipe balancer 8 is moved to the right, the two pipe balancers 8 move to the right synchronously, so that the purpose of balancing the tubular member can still be achieved, and at the same time, the supporting point on the left side of the pipe is moved to the right, which has a better supporting and fixing effect on the tubular member.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crane sling for tubular parts that is convenient for loading, characterized in that: The invention comprises a frame (1), a lifting platform (2) being slidably connected to the frame (1), a lifting roller (3) and a lifting rope (4) being provided on the lifting platform (2), a hanging plate (5) being connected to the lifting rope (4), a balancing tractor (6) being provided on both sides of the hanging plate (5) and being raised and lowered synchronously with the hanging plate (5), the balancing tractor (6) being slidably connected to the frame (1), a pipe clamp (7) being fixedly connected to the lower end of the hanging plate (5), pipe balancers (8) being provided on both sides of the pipe clamp (7), and the pipe balancers (8) being slidably connected to the hanging plate (5); The balancing traction device (6) comprises a balancing roller (601), the balancing roller (601) is rotatably connected to the frame (1), a balancing rope (602) is matched on the balancing roller (601), a first fixed pulley (603) is matched in the middle of the balancing rope (602), a first support rod (604) is rotatably connected to the first fixed pulley (603), the first support rod (604) is slidably connected to the frame (1), a first telescopic rod (605) is matched on the frame (1) and the first support rod (604), a first movable pulley (606) matched with the balancing rope (602) is rotatably connected on the hanging plate (5), and the other end of the balancing rope (602) passes around the first fixed pulley (603) and the first movable pulley (606) and is fixedly connected to the frame (1); The pipe clamp (7) comprises a left bracket (701) and a right bracket (702), the upper ends of the left bracket (701) and the right bracket (702) are respectively hinged on two sides of the hanging plate (5), the lower ends of the left bracket (701) and the right bracket (702) are fixedly connected with a first support rod (703) and a second support rod (704), the first support rod (703) is an L-shaped structure, the second support rod (704) is a T-shaped structure, the second support rod (704) is located above the first support rod (703), a pressing plate (705) is provided in the middle of the two second support rods (704), the pressing plate (705) is located above the second support rod (704), and a lifting platform (706) is installed between the pressing plate (705) and the hanging plate (5); The pipeline balancer (8) comprises an outer frame (801), two steel hoops (802) are rotatably connected inside the outer frame (801), a plurality of guide rods (803) are provided on both sides of the steel hoop (802), the guide rods (803) are fixedly connected to the outer frame (801), the outer sides of the two steel hoops (802) are fixedly connected to limit blocks (804), and a pipe groove (805) is provided on the outer frame (801) inside the steel hoop (802).

2. A crane sling for a tubular member that is convenient for loading materials according to claim 1, characterized in that: Side support rods (9) are fixedly connected to both sides of the frame, sleeves (10) are slidably connected to the side support rods (9), the sleeves (10) are fixedly connected to the first support rod (604), the sleeves (10) are hinged to the first telescopic rod (605), the other end of the first telescopic rod (605) is hinged to a connecting rod (11), and the two ends of the connecting rod (11) are respectively fixedly connected to the frame (1) and the side support rod (9).

3. A crane sling for a tubular member that is convenient for loading materials according to claim 1 or 2, characterized in that: The frame (1) comprises a crossbeam (101), the crossbeam (101) is slidably connected to the lifting platform (2), a reinforcing beam (102) is fixedly connected above the crossbeam (101), movable legs (103) are fixedly connected at both ends of the crossbeam (101), a sliding roller (104) is rotatably connected to the movable legs (103), and the sliding roller (104) is located below the balance rope (602).

4. The crane sling for a tubular member that is convenient for loading materials according to claim 1, characterized in that: The lifting platform (2) is rotatably connected to a second fixed pulley (12), the hanging plate (5) is rotatably connected to two symmetrically distributed second movable pulleys (13), and the lifting rope is wound around the two second movable pulleys (13) and the second fixed pulley (12) in a series manner.

5. A crane sling for a tubular member that is convenient for loading materials according to claim 1 or 4, characterized in that: The lower end of the lifting rope (4) is equipped with a connecting frame (14), and a connecting column (15) is rotatably connected inside the connecting frame (14). The connecting column (15) is fixedly connected to the hanging plate (5), and a limiting plate (16) is fixedly connected to the connecting column (15). The limiting plate (16) is located on the connecting frame (14), and a guide groove (17) is provided on the limiting plate (16). A guide pin (18) is slidably connected inside the guide groove (17), and the guide pin (18) is fixedly connected to the connecting frame (14).

6. The crane sling for a tubular member that is convenient for loading materials according to claim 1, characterized in that: A second telescopic rod (19) is hingedly connected to the left bracket (701) and the right bracket (702), the other end of the second telescopic rod (19) is hingedly connected to the hanging plate (5), and a second support rod (20) is fixedly connected to the left bracket (701) and the right bracket (702), the second support rod (20) is provided with a plurality of through holes for the second support rod (704) to pass through, and a fixing bolt for fixing the second support rod (704) is installed on the second support rod (20).

7. A crane sling for a tubular member that is convenient for loading materials according to claim 1 or 6, characterized in that: The lifting platform (706) comprises an adjusting screw rod (21), two sliders (22) that are movable relative to each other are threadedly connected at both ends of the adjusting screw rod (21), the sliders (22) are rotatably connected to the hanging plate (5), a third telescopic rod (23) is fixedly connected below the two sliders (22), the lower end of the third telescopic rod (23) is fixedly connected to the pressing plate (705), a groove (24) is provided on the pressing plate (705), and the position of the groove (24) corresponds to the second supporting rod (704).

8. The crane sling for tubular parts that facilitate loading according to claim 1, characterized in that: The two steel hoops (802) are provided with tooth grooves (25), and the upper ends of the two groups of tooth grooves (25) are meshed with a first gear (26) and a second gear (27) that rotate relatively, the first gear (26) is fixedly connected to a driving shaft (28), the driving shaft (28) is rotatably connected to a shaft sleeve (29), the shaft sleeve (29) is fixedly connected to the second gear (27), and a bevel gear set (30) is fixedly connected to both the shaft sleeve (29) and the driving shaft (28).

9. A crane sling for a tubular member that is convenient for loading materials according to claim 1 or 8, characterized in that: The inner sides of the two groups of outer frames (801) are fixedly connected with third support rods (31), the third support rods (31) are slidably connected to the hanging plate (5), a fourth telescopic rod (32) is installed between the outer frame (801) and the hanging plate (5), and the two groups of third support rods (31) are staggered.

10. A crane sling for a tubular member that is convenient for loading materials according to claim 1 or 8, characterized in that: A fourth support rod (33) is fixedly connected to the middle of the two groups of outer frames (801), and the fourth support rod (33) passes through the hanging plate (5) and is slidably connected to the hanging plate (5).

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