A lifting system

Abstract

The present invention discloses a lifting system, wherein the tube body assembly pushes the lifting rod to cause the lifting rod to deflect, and during the deflection process, the lifting rod slowly clamps into the clamp body until the lifting rod contacts the clamp, and the clamp rotates around the rotating pin so that the other side of the clamp contacts the lifting rod, thereby clamping the lifting rod and keeping the lifting rod in a fixed state. When the lifting rod is stretched, the lifting rod tube close to the working equipment provides power to pull the cable out of the take-up and pay-out wheel, and when the take-up and pay-out wheel rotates, it drives the reel to reel in the wire rope, thereby realizing the recovery of the wire rope outside the lifting rod. When the lifting rod is retracted, the wire rope provides tension to cause the take-up and pay-out wheel to rotate and recover the cable, thereby realizing that the lifting system integrates the functions of automatic wire reeling, falling over, and locking in place.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting rods, and in particular to a lifting system. Background Art

[0002] Most of the current lifting poles have the disadvantages of being fixed in position after assembly and the pole body cannot be deflected. When the lifting pole encounters tunnels, height-restricted buildings, height-restricted mountains, etc. during transportation after being loaded on a truck, the disadvantage of the pole body not being able to deflect will limit the height of the lift during transportation. Most lifting poles do not have specific fastening devices after loading, and the shaking caused by different road conditions during transportation will reduce the stability of the equipment. In addition, large equipment is installed on the top of the lifting pole, and there are long cables on the equipment. When the lifting pole is raised or lowered, the cables may be intertwined because they are not automatically retracted and released, affecting the normal operation of the top equipment. Therefore, a lifting system that integrates the functions of automatic wire reeling, lodging, and locking in place has become an urgent need. Summary of the invention

[0003] The object of the present invention is to provide a lifting system integrating the functions of automatic wire taking-up, lodging and locking in place.

[0004] To achieve the above-mentioned purpose, the present invention adopts a lifting system, including a mounting platform, and a lifting rod, a deflection device, a synchronous wire-retracting device and an in-position locking device placed on the mounting platform. The number of the in-position locking devices is two, and the two in-position locking devices are respectively arranged on both sides of the lifting rod. The lifting rod includes a lifting rod tube and a base, one end of the lifting rod tube is fixedly connected to the base, and the other end of the lifting rod tube is fixedly connected to the working equipment. The number of the lifting rod tubes is at least two, and two adjacent lifting rod tubes are slidably connected, and the diameter of each lifting rod tube decreases in sequence along the direction from the base to the working equipment;

[0005] The deflection device includes a tube body assembly and a hinge, and two ends of the tube body assembly are hinged to the mounting platform and the lifting rod tube respectively through the hinge, and the synchronous retractable wire device includes a bracket, a retractable wire wheel, a drum, a first transition piece, a second transition piece and a wire rope, the bracket is fixedly connected to the lifting rod tube and is located on the outer side wall of the lifting rod tube, the retractable wire wheel is rotatably connected to the bracket, the drum is fixedly connected to the retractable wire wheel, the first transition piece and the second transition piece are both fixedly connected to the lifting rod tube, one end of the wire rope is wound around the drum, and the other end of the wire rope passes through the first transition piece and the second transition piece in sequence and is fixedly connected to the lifting rod tube, and each of the in-place locking devices includes a clamp body, a clamp, a rotating pin and a tension spring, the clamp is rotatably connected to the clamp body through the rotating pin, one end of the tension spring is fixedly connected to the clamp body, and the other end of the tension spring is fixedly connected to the clamp body.

[0006] Wherein, the tube body assembly includes a transmission box, a driving member and a telescopic tube, the transmission box is hinged to the mounting platform through the hinge, the output end of the driving member is transmission-connected to the transmission box, one end of the telescopic tube is placed inside the transmission box and transmission-connected to the transmission box, and the other end of the telescopic tube is hinged to the lifting rod tube through the hinge.

[0007] Among them, the synchronous wire-retracting and releasing device also includes a screw wire-arranging structure, which includes a support member, a screw, a guide rod, a nut and a wire-retaining wheel combination, the support member is fixedly connected to the bracket, the screw is rotatably connected to the support member, and is located on the upper side of the wire-retracting and releasing wheel, the guide rod is fixedly connected to the support member and is arranged parallel to the screw rod, the nut is threadedly connected to the screw rod, the wire-retaining wheel combination is slidably connected to the guide rod, and the nut and the wire-retaining wheel combination are fixedly connected via a movable part.

[0008] Among them, the synchronous retractable wire device also includes a synchronous buffer structure, which includes a transmission shaft and a spiral spring, the transmission shaft is rigidly connected to the retractable wire wheel, one end of the spiral spring is fixedly connected to the retractable wire wheel, and the other end of the spiral spring is fixedly connected to the drum, and the spiral spring is located between the retractable wire wheel and the drum.

[0009] Wherein, the synchronous wire-retracting and -releasing device further comprises a slip ring, which is rotationally connected to the wire-retracting and -releasing wheel and is located at the axial center of the wire-retracting and -releasing wheel.

[0010] The lifting rod is k-fold linkage telescopic, the lifting speed and stroke of the secondary outer tube of the lifting rod are 1 / k of the lifting rod, and the number of rotations n of the reel and the drum during the lifting or descending of the lifting rod is:

[0011] Wherein, L is the height of the lifting rod when it is raised or lowered, and D is the winding diameter of the reel; during the rising process of the lifting rod, the corresponding length Lg of the wire rope wound on the drum is:

[0012] Lg=π×d×n

[0013] When the wire rope winding length Lg is equal to the lifting height of the secondary outer tube of the lifting rod Right now Synchronous pay-off can be achieved when

[0014] During the lowering process of the lifting rod, the lowering height of the secondary outer tube of the lifting rod is The number of revolutions of the reel n is:

[0015]

[0016] The corresponding cable retraction length Lx is:

[0017] Lx=π×D×n

[0018] When the line length Lx is equal to the height L of the lifting rod, that is, , synchronous winding is achieved.

[0019] In which, the clamp body includes a cross beam, a first return spring mounting block and a second return spring mounting block, the number of the cross beams is two, the two cross beams are arranged in parallel, the clamp is rotatably connected to the two cross beams through the rotating pin, and the clamp is arranged between the two cross beams, the first return spring mounting block is fixedly connected to the clamp and is located at the end of the clamp away from the rotating pin, the second return spring mounting block is fixedly connected to the two cross beams and is located between the two cross beams and above the first return spring mounting block, and the two ends of the tension spring are respectively fixedly connected to the first return spring mounting block and the second return spring mounting block, and are located between the first return spring mounting block and the second return spring mounting block.

[0020] In which, the clamp body also includes a connecting plate, a first guide bar, a guide block and a second guide bar, the connecting plates are respectively fixedly connected to the two cross beams and are located between the two cross beams, and the connecting plate is fixedly connected to the second return spring mounting block, the first guide bar is fixedly connected to the clamp and is located at the end of the clamp away from the first return spring mounting block, the number of the guide blocks and the second guide bar is two, the two guide blocks are respectively fixedly connected to the corresponding two cross beams, and the two guide blocks are located on both sides of the first guide bar, the two second guide bars are respectively fixedly connected to the corresponding two cross beams, and the two second guide bars are located on both sides of the connecting plate.

[0021] Among them, the clamp body also includes a limit mounting block, which is fixedly connected to the cross beam and is located between the two cross beams and above the first return spring mounting block. The limit mounting block has a recessed groove on one end close to the first return spring mounting block.

[0022] Wherein, the lifting system further comprises a fixing plate, both ends of which are respectively fixedly connected to the two clamping hoop bodies and are located above the lifting rod.

[0023] The beneficial effects of the present invention are embodied in that: the tube body assembly pushes the lifting rod, causing the lifting rod to deflect. During the deflection process, the lifting rod is slowly clamped into the clamp body until the lifting rod contacts the clamp, and the clamp rotates around the rotating pin so that the other side of the clamp contacts the lifting rod, thereby clamping the lifting rod and maintaining the fixed state of the lifting rod. When the lifting rod is stretched, the secondary outer section tube of the lifting rod close to the working equipment provides power to pull the cable out of the take-up and pay-out wheel. When the take-up and pay-out wheel rotates, the reel drives the wire rope to be reeled in, thereby realizing the recovery of the wire rope outside the lifting rod. When the lifting rod is retracted, the wire rope provides tension to cause the take-up and pay-out wheel to rotate. When the take-up and pay-out wheel rotates, the cable is recovered. The lifting system integrates the functions of automatic take-up, falling down and locking in place by cooperating with the lifting rod, the deflection device, the synchronous take-up and pay-out device and the in-place locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the lifting system of the present invention.

[0026] Figure 2 It is a top view of the lifting system of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the deflection device of the present invention.

[0028] Figure 4 It is a schematic diagram of the connection structure between the lifting rod and the synchronous wire-retracting and releasing device of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the synchronous wire-retracting and -releasing device of the present invention.

[0030] Figure 6 It is a front view of the synchronous wire-retracting and -releasing device of the present invention.

[0031] Figure 7 is a cross-sectional view of the synchronous buffer structure of the present invention.

[0032] Figure 8 It is a top view of the synchronous wire-retracting and -releasing device of the present invention.

[0033] Fig. 9 It is a structural schematic diagram of the screw rod wiring structure of the present invention.

[0034] Fig.10 It is a schematic diagram of the internal structure of the synchronous buffer structure of the present invention.

[0035] Fig.11 It is a structural principle diagram of the lifting rod and the synchronous wire-retracting and releasing device of the present invention.

[0036] Fig.12 It is a schematic structural diagram of the in-position locking device of the present invention.

[0037] Fig.13 It is a side view of the locking device in place of the present invention.

[0038] Fig.14 It is a structural schematic diagram of the card clip of the present invention.

[0039] Fig.15 It is a partial structural schematic diagram when the in-place locking device of the present invention is installed with only one crossbeam rod.

[0040] Fig.16 It is a principle diagram of the lifting rod of the present invention before being pushed into the clamp body.

[0041] Fig.17 It is a principle diagram after the square lifting rod of the present invention is pushed into the clamp body.

[0042] 100-lifting system, 10-mounting table, 11-fixed plate, 20-lifting rod, 21-lifting rod tube, 22-base, 30-deflection device, 31-tube assembly, 311-transmission box, 312-driving member, 313-telescopic tube, 32-hinged member, 40-synchronous retractable wire device, 41-bracket, 42-retractable wire wheel, 43-reel, 44-first transition piece, 45-second transition piece, 46-wire rope, 47-screw rod arrangement structure, 471-support, 472-screw rod, 473-guide rod , 474-nut, 475-wire wheel assembly, 48-synchronous buffer structure, 481-transmission shaft, 482-volute spring, 49-slip ring, 50-locking device in place, 51-hoop body, 511-crossbeam, 512-first return spring mounting block, 513-second return spring mounting block, 514-connecting plate, 515-first guide strip, 516-guide block, 517-second guide strip, 518-limiting mounting block, 519-recessed groove, 52-clamp, 53-rotation pin, 54-tension spring. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0045] See also Figures 1 to 17The present invention provides a lifting system 100, comprising a mounting platform 10, and a lifting rod 20, a deflection device 30, a synchronous retracting and releasing device 40 and an in-position locking device 50 placed on the mounting platform 10, wherein the number of the in-position locking devices 50 is two, and the two in-position locking devices 50 are respectively arranged on both sides of the lifting rod 20, the lifting rod 20 comprises a lifting rod tube 21 and a base 22, one end of the lifting rod tube 21 is fixedly connected to the base 22, and the other end of the lifting rod tube 21 is fixedly connected to a working device, the number of the lifting rod tube 21 is at least two, and two adjacent lifting rod tubes 21 are slidably connected, and the diameter of each lifting rod tube 21 decreases in sequence along the direction from the base 22 to the working device;

[0046] The deflection device 30 includes a tube assembly 31 and a hinge 32, and the two ends of the tube assembly 31 are respectively hinged to the mounting platform 10 and the lifting rod tube 21 through the hinge 32. The synchronous wire-retracting device 40 includes a bracket 41, a wire-retracting wheel 42, a reel 43, a first transition piece 44, a second transition piece 45 and a wire rope 46. The bracket 41 is fixedly connected to the lifting rod tube 21 and is located on the outer side wall of the lifting rod tube 21. The wire-retracting wheel 42 is rotatably connected to the bracket 41, and the reel 43 is fixedly connected to the wire-retracting wheel 42. The first transition piece 44 and the second transition piece 45 are connected to the bracket 41. The transition pieces 45 are all fixedly connected to the lifting rod tube 21, one end of the steel wire rope 46 is wound around the drum 43, the other end of the steel wire rope 46 passes through the first transition piece 44 and the second transition piece 45 in sequence, and is fixedly connected to the lifting rod tube 21, each of the in-place locking devices 50 includes a clamp body 51, a clamp 52, a rotating pin 53 and a tension spring 54, the clamp 52 is rotatably connected to the clamp body 51 through the rotating pin 53, one end of the tension spring 54 is fixedly connected to the clamp body 51, and the other end of the tension spring 54 is fixedly connected to the clamp body 51, and the other end of the tension spring 54 is fixedly connected to the clamp 52.

[0047] In this embodiment, the mounting platform 10 is used to support the lifting rod 20, the deflection device 30, the synchronous retractable wire device 40 and the in-place locking device 50. The synchronous retractable wire device 40 is fixed to the lifting rod 20 by bolts, and is installed side by side with the deflection device 30 on one side of the lifting rod 20. The two in-place locking devices 50 are respectively arranged on both sides of the lifting rod 20, and one of the in-place locking devices 50 is used to fix the lifting rod 20 when it is not deflected, and the other in-place locking device 50 is used to fix the lifting rod 20 after it is deflected to a specified position. The lifting rod 20 adopts a built-in flexible structure, and the lifting rod 20 includes a lifting rod tube 21 and the base 22. The multiple lifting rod tubes 21 form a multi-section tube structure. If the number of the lifting rod tubes 21 is two, and the lifting rod tube 21 with a smaller diameter is sleeved inside the lifting rod tube 21 with a larger diameter, and the base 22 is set at the bottom of the lifting rod tube 21 with a smaller diameter, the lifting rod 20 also includes a motor assembly, a screw rod 472 assembly and a transmission mechanism. When working, the motor assembly transmits power to the screw rod 472 assembly, and the screw rod 472 assembly rotates to drive the lifting rod tube 21 to extend or retract.

[0048] The deflection device 30 has the same principle as the lifting rod 20. The deflection device 30 pushes the lifting rod 20 to be in two working positions of vertical or inclined at a certain angle through the extension and contraction of the tube assembly 31. The limit switch on the deflection device 30 is integrated with the in-place locking device 50. The bracket 41 is used to fix the retractable wire wheel 42 to the outer wall of the lifting rod tube 21. The retractable wire wheel 42 is used to wind the cable connected to the working equipment. The working equipment is arranged at the top of the lifting rod 20. The reel 43 is used to The winding wire rope 46, the first transition piece 44 and the second transition piece 45 are both fixed pulleys, and the clamp 52 is arranged in an L-shaped structure. When the locking device 50 is in the initial state, one end of the clamp 52 is inclined under the tension of the tension spring 54, and the end of the clamp 52 close to the tension spring 54 protrudes from the end face of the clamp body 51, and the end of the clamp 52 away from the tension spring 54 is lower than the end face of the clamp body 51, that is, the B side of the clamp 52.

[0049] When it is necessary to erect the lifting system 100, the tube body assembly 31 is extended to push the lifting rod 20 to deflect from the inclined direction to the vertical direction. During the deflection process, the lifting rod 20 is slowly clamped into the clamp body, and the lifting rod 20 contacts the end face of the clamp 52 close to the tension spring 54, that is, the lifting rod 20 contacts the A of the clamp 52, and as the lifting rod 20 is extended, the lifting rod 20 resists the clamp 52, so that the clamp 52 rotates around the rotating pin 53, and at the same time, the tension spring 54 is subjected to a tension force, so that the end face of the clamp 52 away from the tension spring 54, that is, the B surface of the clamp 52 contacts the lower bottom surface of the lifting rod 20, thereby holding the lifting rod 20 tightly to ensure that the lifting rod 20 is secure. The lifting rod 20 can be locked in place when deflected, and the fixed state of the lifting rod 20 can be maintained. The motor assembly can be controlled to rotate, and then the power is transmitted to the screw rod 472 assembly. The screw rod 472 assembly rotates to drive the lifting rod tube 21 to extend, and the lifting rod tube 21 close to the working equipment provides power. The cable on the working equipment pulls the reel 42 to rotate, and then the reel 42 drives the drum 43 to rotate. The drum 43 rotates to wind the wire rope 46 passing through the first transition piece 44 and the second transition piece 45 around the drum 43, so as to pay out the wire of the reel 42 and recover the wire rope 46 outside the lifting rod 20.

[0050] When the lifting system 100 needs to be withdrawn, when the lifting rod tube 21 descends, the steel wire rope 46 connected to the base 22 passes through the first transition piece 44 and the second transition piece 45 to pull the drum 43, so that the drum 43 rotates, and the drum 43 drives the take-up and pay-out wheel 42 to rotate, and then the cable is wound around the take-up and pay-out wheel 42 to achieve the take-up of the take-up and pay-out wheel 42, and then the tube body assembly 31 contracts, pushing the lifting rod 20 to deflect from the vertical direction to the inclined direction, and then the lifting rod 20 is inserted into another in-place locking device 50. When the limit switch receives the tilt in-place information, the in-place locking device immediately clamps and fixes the lifting rod 20, and the withdrawal work is completed.

[0051] During the entire erection and withdrawal process, the in-place locking device 50 improves the stability during deflection and the stability of the lifting rod 20 during operation; the deflection device 30 improves the speed of the entire system deflection process; the synchronous retractable wire device 40 solves the problem of disordered cable arrangement and intertwining during the lifting of the lifting rod 20. The entire lifting system 100 solves the problem of passing through height-restricted conditions during transportation by the retraction of the lifting rod 20; the in-place locking device solves the problem of severe shaking of the lifting rod 20 under different road conditions during driving, and improves the stability of the equipment; the synchronous retractable wire device 40 solves the problem of intertwining of cables during the lifting of the lifting rod 20. Through the above devices, the lifting system 100 integrates the functions of automatic retracting, retraction, and in-place locking, and the entire lifting system 100 has the advantages of speed, stability, and high passability.

[0052] Furthermore, the tube body assembly 31 includes a transmission box 311, a driving member 312 and a telescopic tube 313. The transmission box 311 is hinged to the mounting platform 10 through the hinge 32. The output end of the driving member 312 is transmission-connected to the transmission box 311. One end of the telescopic tube 313 is placed inside the transmission box 311 and is transmission-connected to the transmission box 311. The other end of the telescopic tube 313 is hinged to the lifting rod tube 21 through the hinge 32.

[0053] In this embodiment, the tube body assembly 31 is provided with the driving member 312, and the driving member 312 has the same function as the motor assembly in the lifting rod 20, the function of the transmission box 311 is the same as that of the transmission mechanism, and the telescopic tube 313 has the same function as the lifting rod 20. The driving member 312 drives the transmission box 311 to move, and then the transmission box 311 drives the telescopic tube 313 to extend and retract, thereby realizing the adjustment of the deflection angle of the lifting rod 20.

[0054] Furthermore, the synchronous wire-retracting and releasing device 40 also includes a screw wire-arranging structure 47, which includes a support member 471, a screw rod 472, a guide rod 473, a nut 474 and a wire-protecting wheel assembly 475. The support member 471 is fixedly connected to the bracket 41, the screw rod 472 is rotatably connected to the support member 471, and is located on the upper side of the wire-retracting and releasing wheel 42, the guide rod 473 is fixedly connected to the support member 471 and is arranged parallel to the screw rod 472, the nut 474 is threadedly connected to the screw rod 472, the wire-protecting wheel assembly 475 is slidably connected to the guide rod 473, and the nut 474 and the wire-protecting wheel assembly 475 are fixedly connected via a movable part.

[0055] In this embodiment, the screw rod cable arrangement structure 47 is arranged on the outer periphery of the take-up and pay-out wheel 42, and the screw rod cable arrangement structure 47 and the take-up and pay-out wheel 42 are driven by a synchronous belt or a chain. The support member 471 is used to support and connect other components of the screw rod cable arrangement structure 47. One end of the cable is wound around the take-up and pay-out wheel 42, and the other end of the cable passes through the wire protection wheel assembly 475 and is electrically connected to the working equipment. When the take-up and pay-out wheel 42 is taking up or paying out the wire, the nut 474 will rotate on the screw rod 472, and at the same time, the wire protection wheel assembly 475 moves on the guide rod 473, so as to arrange the cable and avoid tangling of the wires.

[0056] Furthermore, the synchronous retractable wire device 40 also includes a synchronous buffer structure 48, which includes a transmission shaft 481 and a spiral spring 482, wherein the transmission shaft 481 is rigidly connected to the retractable wire wheel 42, one end of the spiral spring 482 is fixedly connected to the retractable wire wheel 42, and the other end of the spiral spring 482 is fixedly connected to the drum 43, and the spiral spring 482 is located between the retractable wire wheel 42 and the drum 43.

[0057] In this embodiment, it is assumed that the linkage ratio of the lifting rod 20 is 1:n (i.e., the movement speed of the top end of the lifting rod 20 is n times the movement speed of the secondary outer tube of the lifting rod 20). When the lifting rod tube 21 is working, the speed ratio between the steel wire rope 46 and the cable is 1:n. When encountering certain situations, such as due to the processing error of the wire wheel diameter, or due to the influence of the structure, the lifting rod 20 does not reach the strict 1:n linkage ratio, or the cable is stuck by a certain structure when working, etc., resulting in the speed between the steel wire rope 46 and the cable not reaching 1:n, it will affect the winding function. By arranging the volute spring 482 between the winding and releasing wheel 42 and the drum 43, a certain angle of relative rotation can occur between the drum 43 and the winding and releasing wheel 42, thereby avoiding damage to the cable and other structures, achieving the purpose of synchronous buffering, realizing buffering and tensioning effects on the cable, and improving the cable winding and releasing effect.

[0058] Furthermore, the synchronous wire-retracting and -releasing device 40 further includes a slip ring 49 , which is rotatably connected to the wire-retracting and -releasing wheel 42 and is located at the axial center of the wire-retracting and -releasing wheel 42 .

[0059] In this embodiment, the cable on the retractable wire wheel 42 is connected to other equipment at the bottom of the lifting rod tube 21 through the slip ring 49 to prevent the cable from being twisted when the retractable wire wheel 42 rotates. A wire guard is also provided on the outside of each lifting rod tube 21. The cable needs to pass through each wire guard to be electrically connected to the working equipment. The provision of multiple wire guards can prevent the cable from being twisted when the cable is retracted.

[0060] Furthermore, the lifting rod 20 is k-fold linkage telescopic, the lifting speed and stroke of the secondary outer tube 21 of the lifting rod are 1 / k of the lifting rod 20, and during the lifting or lowering of the lifting rod 20, the number of rotations n of the reel 42 and the reel 43 is:

[0061]

[0062] Wherein, L is the height of the lifting rod 20 when it is raised or lowered, and D is the winding diameter of the reel 42;

[0063] During the ascending process of the lifting rod 20, the length Lg of the corresponding steel wire rope 46 wound on the drum 43 is:

[0064] Lg=π×d×n

[0065] The winding length Lg of the steel wire rope 46 is equal to the height of the secondary outer tube 21 of the lifting rod. Right now Synchronous pay-off can be achieved when

[0066] During the lowering process of the lifting rod 20, the lowering height of the secondary outer tube 21 of the lifting rod is The number of revolutions n of the reel 43 is:

[0067]

[0068] The corresponding cable retraction length Lx is:

[0069] Lx=π×D×n

[0070] When the wire collection length Lx is equal to the height L of the lifting rod 20, that is, When the cable is collected synchronously,

[0071] Among them, when satisfied When the synchronous wire-retracting and -releasing device 40 is used, the synchronous wire-retracting and -releasing device 40 can realize synchronous wire-retracting and -releasing.

[0072] In this embodiment, the number of the lifting rod tubes 21 is set to two, and the lifting rod 20 is k-fold linkage telescopic, the lifting speed and stroke of the secondary outer tube 21 of the lifting rod are both 1 / k of the entire lifting rod 20, and the ratio of the diameter of the reel 43 and the reel 42 can be adjusted to achieve the synchronous reeling function. In the process of rising synchronization, when the lifting rod 20 is raised to a height of L, the reeling length of the synchronous reeling device 40 is L, and the reel 42 and the reel 43 rotate a number of turns n. D is the winding diameter of the reel 42. The number of turns of the wire rope 46 added to the drum 43 is the same as the number of turns of the drum, which is n turns. The corresponding length Lg of the wire rope 46 on the drum 43 is: Lg = π × d × n, where d is the winding diameter of the drum 43, and the winding length Lg of the wire rope 46 is equal to the height of the secondary outer tube 21 of the lifting rod. Right now This is used to achieve synchronous wire release.

[0073] In the synchronous descending process, when the descending height of the lifting rod 20 is L, the descending height of the secondary outer tube 21 of the lifting rod is 1 / k of the pay-off length of the synchronous pay-off and take-up device 40, that is, L / k, and the number of revolutions n of the reel 43 is: The cable take-up length Lx corresponding to the take-up and pay-out wheel 42 is: Lx = π × D × n, and the cable take-up length Lx corresponding to the take-up and pay-out wheel 42 is equal to the descending height L of the lifting rod 20, that is, , synchronous winding is achieved.

[0074] Furthermore, the clamp body 51 includes a cross beam 511, a first return spring mounting block 512 and a second return spring mounting block 513. The number of the cross beams 511 is two, and the two cross beams 511 are arranged in parallel. The clamp 52 is rotatably connected to the two cross beams 511 through the rotating pin 53, and the clamp 52 is arranged between the two cross beams 511. The first return spring mounting block 512 is fixedly connected to the clamp 52 and is located at the end of the clamp 52 away from the rotating pin 53. The second return spring mounting block 513 is fixedly connected to the two cross beams 511 and is located between the two cross beams 511 and above the first return spring mounting block 512. The two ends of the tension spring 54 are respectively fixedly connected to the first return spring mounting block 512 and the second return spring mounting block 513, and are located between the first return spring mounting block 512 and the second return spring mounting block 513.

[0075] In this embodiment, the crossbeam 511 is arranged in a U-shaped structure, and the clip 52 is arranged in an L-shaped structure. The clip 52 is arranged between the two crossbeams 511, and the clip 52 and the two crossbeams 511 are rotated by the rotating pin 53. When the locking device 50 is in the initial state, one end of the clip 52 is inclined under the pulling force of the tension spring 54, and the end of the clip 52 close to the tension spring 54 protrudes from the end faces of the two crossbeams 511, and the end of the clip 52 away from the tension spring 54 is lower than the end faces of the two crossbeams 511, that is, the B face of the clip 52; when the deflection device 3 When the lifting rod 20 is pushed into the clamp body 51, the lifting rod 20 contacts the end face of the clamp 52 close to the tension spring 54, that is, the lifting rod 20 contacts the A of the clamp 52, and as the lifting rod 20 is pushed in, the lifting rod 20 abuts against the clamp 52, so that the clamp 52 rotates around the rotating pin 53, and at the same time, the tension spring 54 is subjected to a tensile force, so that the end face of the clamp 52 away from the tension spring 54, that is, the B face of the clamp 52, contacts the lower bottom surface of the lifting rod 20, thereby holding the lifting rod 20 tightly and keeping it in a fixed state, so that it can work stably and reliably for a long time, thereby realizing the locking of the lifting rod 20 in place when it is deflected.

[0076] Furthermore, the clamp body 51 also includes a connecting plate 514, a first guide strip 515, a guide block 516 and a second guide strip 517. The connecting plate 514 is fixedly connected to the two cross beams 511 respectively and is located between the two cross beams 511, and the connecting plate 514 is fixedly connected to the second return spring mounting block 513. The first guide strip 515 is fixedly connected to the clip 52 and is located at the end of the clip 52 away from the first return spring mounting block 512. The number of the guide blocks 516 and the second guide strip 517 is two. The two guide blocks 516 are fixedly connected to the corresponding two cross beams 511 respectively, and the two guide blocks 516 are located on both sides of the first guide strip 515. The two second guide strips 517 are fixedly connected to the corresponding two cross beams 511 respectively, and the two second guide strips 517 are located on both sides of the connecting plate 514.

[0077] In this embodiment, the connecting plate 514 can connect the two crossbeams 511 to improve the structural stability of the in-position locking device 50. In addition, the second return spring mounting block 513 can be fixed on the connecting plate 514, and the second return spring mounting block 513 can be supported and fixed. The first guide bar 515 can guide the lifting rod 20 that is pushed in or out, so that the sliding of the lifting rod 20 is smoother. When the lifting rod 20 is pushed in, the bottom wall of the lifting rod 20 contacts the end faces of the two guide blocks 516, and the two guide blocks 516 can also guide the pushed-in lifting rod 20, so that the sliding is smoother. When the lifting rod 20 is pushed in, the upper top wall of the lifting rod 20 contacts the end faces of the two second guide bars 517, and the two second guide bars 517 can also guide the pushed-in lifting rod 20, and the sliding is smoother by cooperating with the two guide blocks 516. The first guide bar 515, the two guide blocks 516, and the two second guide bars 517 are all arranged with an inclined surface at one end along the length extension direction of the crossbar 511, so that the lifting rod 20 can be pushed in better. The first guide bar 515, the two guide blocks 516, and the two second guide bars 517 are arranged so that one end along the length extension direction of the crossbar 511 protrudes from the crossbar 511, so that the lifting rod 20 can also be pushed in faster and more smoothly.

[0078] Furthermore, the clamp body 51 also includes a limit mounting block 518, which is fixedly connected to the cross beam 511 and is located between the two cross beams 511 and above the first return spring mounting block 512. The limit mounting block 518 has a recessed groove 519 on one end close to the first return spring mounting block 512.

[0079] In this embodiment, when the locking device 50 is in the initial state, the clamp 52 is tilted under the tension of the tension spring 54 itself. In order to prevent the clamp 52 from being too tilted, the limiting mounting block 518 is provided to limit the tilt angle of the clamp 52. The recessed groove 519 can abut against the first return spring mounting block 512 to further limit the tilt angle of the clamp 52.

[0080] Furthermore, the lifting system 100 further includes a fixing plate 11 , both ends of which are fixedly connected to the two clamp bodies 51 , respectively, and are located above the lifting rod 20 .

[0081] In this embodiment, the fixing plate 11 can fix and connect the two clamp bodies 51 , thereby increasing the connection stability of the two clamp bodies 51 .

[0082] In summary: during the falling process of the lifting rod 20, the deflection device 30 realizes the falling effect, thereby improving the pass rate under height-restricted conditions; during transportation, the locking device in place reduces the shaking of the lifting rod 20; during the lifting and lowering process of the lifting rod 20, the synchronous wire-retracting device 40 solves the entanglement problem caused by the excessive length of the cables; the locking device in place realizes the effect of timely locking when deflected into place; the entire lifting system 100 is very stable during operation and transportation; the entire lifting system 100 can achieve a rapid deflection effect under the action of the deflection device 30.

[0083] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A lifting system, characterized in that: It comprises a mounting platform, and a lifting rod, a deflection device, a synchronous wire-retracting and releasing device and an in-position locking device placed on the mounting platform. The number of the in-position locking devices is two, and the two in-position locking devices are respectively arranged on both sides of the lifting rod. The lifting rod comprises a lifting rod tube and a base. One end of the lifting rod tube is fixedly connected to the base, and the other end of the lifting rod tube is fixedly connected to the working equipment. The number of the lifting rod tubes is at least two, and two adjacent lifting rod tubes are slidably connected, and the diameter of each lifting rod tube decreases in sequence along the direction from the base to the working equipment. The deflection device includes a tube body assembly and a hinge, and two ends of the tube body assembly are hinged to the mounting platform and the lifting rod tube respectively through the hinge, and the synchronous wire-retracting and releasing device includes a bracket, a wire-retracting and releasing wheel, a drum, a first transition piece, a second transition piece and a wire rope, the bracket is fixedly connected to the lifting rod tube and is located on the outer side wall of the lifting rod tube, the wire-retracting and releasing wheel is rotatably connected to the bracket, the drum is fixedly connected to the wire-retracting and releasing wheel, the first transition piece and the second transition piece are both fixedly connected to the lifting rod tube, one end of the wire rope is wound around the drum, and the other end of the wire rope passes through the first transition piece and the second transition piece in sequence and is fixedly connected to the lifting rod tube, and each of the in-place locking devices includes a clamp body, a clamp, a rotating pin and a tension spring, the clamp is rotatably connected to the clamp body through the rotating pin, one end of the tension spring is fixedly connected to the clamp body, and the other end of the tension spring is fixedly connected to the clamp body.

2. The lifting system according to claim 1, characterized in that: The tube body assembly includes a transmission box, a driving member and a telescopic tube. The transmission box is hinged to the mounting platform via the hinge. The output end of the driving member is transmission-connected to the transmission box. One end of the telescopic tube is placed inside the transmission box and transmission-connected to the transmission box. The other end of the telescopic tube is hinged to the lifting rod tube via the hinge.

3. The lifting system according to claim 1, characterized in that: The synchronous wire-retracting and releasing device also includes a screw wire-arranging structure, which includes a support member, a screw, a guide rod, a nut and a wire-retaining wheel assembly, the support member is fixedly connected to the bracket, the screw is rotatably connected to the support member and is located above the side of the wire-retracting and releasing wheel, the guide rod is fixedly connected to the support member and is arranged parallel to the screw, the nut is threadedly connected to the screw, the wire-retaining wheel assembly is slidably connected to the guide rod, and the nut is fixedly connected to the wire-retaining wheel assembly via a movable member.

4. The lifting system according to claim 3, characterized in that: The synchronous retractable wire device also includes a synchronous buffer structure, which includes a transmission shaft and a spiral spring. The transmission shaft is rigidly connected to the retractable wire wheel, one end of the spiral spring is fixedly connected to the retractable wire wheel, and the other end of the spiral spring is fixedly connected to the drum, and the spiral spring is located between the retractable wire wheel and the drum.

5. The lifting system according to claim 4, characterized in that: The synchronous wire-retracting and -releasing device further comprises a slip ring, which is rotatably connected to the wire-retracting and -releasing wheel and is located at the axial center of the wire-retracting and -releasing wheel.

6. The lifting system according to any one of claims 1 to 5, characterized in that: The lifting rod is k-fold linkage telescopic, the lifting speed and stroke of the secondary outer tube of the lifting rod are 1 / k of the lifting rod, and the number of rotations n of the reel and the drum during the lifting or descending of the lifting rod is: Wherein, L is the height of the lifting rod when it is raised or lowered, and D is the winding diameter of the reel; During the lifting process of the lifting rod, the corresponding length Lg of the wire rope wound on the drum is: Lg=π×d×n Wherein, d is the winding diameter of the reel; When the wire rope winding length Lg is equal to the lifting height of the secondary outer tube of the lifting rod Right now Synchronous pay-off can be achieved when During the lowering process of the lifting rod, the lowering height of the secondary outer tube of the lifting rod is The number of revolutions of the reel n is: The corresponding cable retraction length Lx is: Lx=π×D×n When the length of the reel Lx is equal to the height of the lifting rod L, that is, , synchronous winding is achieved.

7. The lifting system according to claim 1, characterized in that: The clamp body includes a cross beam, a first return spring mounting block and a second return spring mounting block. There are two cross beams, which are arranged in parallel. The clamp is rotatably connected to the two cross beams through the rotating pin, and the clamp is arranged between the two cross beams. The first return spring mounting block is fixedly connected to the clamp and is located at the end of the clamp away from the rotating pin. The second return spring mounting block is fixedly connected to the two cross beams and is located between the two cross beams and above the first return spring mounting block. The two ends of the tension spring are respectively fixedly connected to the first return spring mounting block and the second return spring mounting block, and are located between the first return spring mounting block and the second return spring mounting block.

8. The lifting system according to claim 7, characterized in that: The clamp body also includes a connecting plate, a first guide bar, a guide block and a second guide bar. The connecting plates are respectively fixedly connected to the two cross beams and are located between the two cross beams, and the connecting plate is fixedly connected to the second return spring mounting block. The first guide bar is fixedly connected to the clamp and is located at the end of the clamp away from the first return spring mounting block. The number of the guide blocks and the second guide bars is two. The two guide blocks are respectively fixedly connected to the corresponding two cross beams, and the two guide blocks are located on both sides of the first guide bar. The two second guide bars are respectively fixedly connected to the corresponding two cross beams, and the two second guide bars are located on both sides of the connecting plate.

9. The lifting system according to claim 8, characterized in that: The clamp body also includes a limit mounting block, which is fixedly connected to the cross beam and is located between the two cross beams and above the first return spring mounting block. The limit mounting block has a recessed groove on one end close to the first return spring mounting block.

10. The lifting system according to claim 1, characterized in that: The lifting system further comprises a fixing plate, both ends of which are respectively fixedly connected to the two clamping hoop bodies and are located above the lifting rod.

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