Compact anti-falling high-stability double-steel-wire lamp lifter

Abstract

According to the compact anti-falling high-stability double-steel-wire lamp lifter, by arranging the wire arranging assembly, steel wire ropes (4) can be wound in the double-groove steel wire reel (3) in order in the winding process, and the situation that the steel wire ropes (4) are wound in disorder is avoided; the lamp holder (2) can be locked through the mechanical self-locking and self-separating latch hook mechanism, accidental falling of the lamp holder (2) can be avoided, the safety of the lamp in use is greatly improved, when the lamp holder (2) needs to descend, the mechanical self-locking and self-separating latch hook mechanism can mechanically and automatically unlock the lamp holder (2), and normal ascending and descending of the lamp holder (2) can be ensured; through the arrangement of the first transmission mechanism and the second transmission mechanism, the double-groove steel wire reel (3), the wire arranging assembly and the mechanical self-locking and self-separating lock hook mechanism can be driven to work at the same time through one motor (5), the manufacturing cost is saved, energy is greatly saved, meanwhile, the space can be reasonably utilized, and the structure is more compact.

Description

A compact, fall-proof, high-stability double-wire lamp lifter Technical Field

[0001] The present invention relates to the technical field of lifting lamps, and in particular to a compact, anti-fall, high-stability double-steel-wire lamp lifter. Background Art

[0002] With the current demand for lifting functions in high-altitude lighting and to reduce the maintenance costs of high-altitude lamps, lamps with lifting functions are now widely used in high-altitude places such as stages, mines, stadiums, stations and docks. Existing high-altitude lamps mostly use a lifting device connected to the top of the lamp to achieve the lifting of the lamp.

[0003] The lifting device usually uses a motor to drive the unwinding wheel to rotate, thereby reeling in and out the reel to achieve the lifting function of the high-altitude lamp. However, since it needs to be used in high-altitude space environments such as high-speed railway stations and airports, its safety requirements are relatively high. The existing lifting device usually only uses a simple single steel cable for lifting and lowering, and has poor stability. In use, it is found that when the steel cable is wound on the reel, it is easy to get entangled with each other in a disorderly manner, which will affect the lifting and lowering. In addition, when the lamp rises to the highest point for lighting work, the lamp is still suspended by the steel wire. Once the motor fails, the power is cut off, or the steel wire breaks, the lamp will fall freely under the action of the weight of the lamp, which is prone to accidental falling accidents. Summary of the Invention

[0004] The present invention aims to solve at least one of the problems existing in the existing related technologies to a certain extent. To this end, the present invention provides a compact, anti-fall, high-stability double-wire lamp lifter.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A compact, fall-proof, high-stability double-wire lamp lifter includes a fixing frame and a lamp holder arranged below the fixing frame. A traction mechanism for pulling the lamp holder up and down is provided on the fixing frame. The traction mechanism includes a double-slot wire reel, two sets of wire ropes wound on the double-slot wire reel, and a motor that drives the double-slot wire reel to rotate. A tensioning guide pulley assembly, a cable arrangement assembly, a mechanical self-locking and self-disengaging lock hook mechanism, a first transmission mechanism, and a second transmission mechanism are also provided on the fixing frame. The tensioning guide pulley assembly is used to guide the moving direction of the wire rope and keep the wire rope in a tensioned state. The wire assembly is used to guide the wire rope to be reciprocated in the axial direction on the double-slot wire reel for winding or unwinding. The mechanical self-locking and self-disengaging lock hook mechanism is used to automatically lock the lamp holder when the lamp holder rises to the highest point, and when the lamp holder is lowered at the highest point through the traction mechanism, the mechanical self-locking and self-disengaging lock hook mechanism can automatically unlock the lamp holder. The first transmission mechanism is used to connect the wire arrangement assembly with the motor, and the second transmission mechanism is used to connect the mechanical self-locking and self-disengaging lock hook mechanism with the motor. When the motor is working, the wire arrangement assembly and the mechanical self-locking and self-disengaging lock hook mechanism are driven to work respectively through the first transmission mechanism and the second transmission mechanism.

[0007] In some embodiments, the fixing frame includes a top plate and a bottom plate spaced apart in an upper and lower manner, and a plurality of columns are connected between the top plate and the bottom plate. There are two wire threading holes symmetrically arranged on the bottom plate with the center of the bottom plate as the center point, and two groups of steel wire ropes are connected to the lamp holder after passing through the wire threading holes.

[0008] In some embodiments, a support frame is provided on the lower side of the top plate, the double-slot wire reel is rotatably installed in the support frame, the motor is installed on the outside of the support frame, and the output shaft of the motor passes through the support frame and is fixedly connected to the double-slot wire reel.

[0009] In some embodiments, the cable arrangement assembly includes an arch frame arranged on the lower side of the top plate, a first rotating shaft is rotatably mounted on the arch frame, a cylinder is provided on the first rotating shaft, a wavy guide groove is provided around the outer wall of the cylinder, a sliding frame is provided on the arch frame and slides below the first rotating shaft, a guide column is provided on the upper side of the sliding frame, one end of the guide column is movably provided in the wavy guide groove, a second rotating shaft is rotatably provided on the lower side of the sliding frame, and a cable arrangement guide wheel is provided on the second rotating shaft.

[0010] In some embodiments, the first transmission mechanism includes a main drive gear disposed on the output shaft of the motor, a first gear disposed on the first rotating shaft, and a transmission gear set on the support frame and meshing between the main drive gear and the first gear.

[0011] In some embodiments, the tensioning guide pulley assembly includes a first guide wheel seat and a second guide wheel seat arranged at intervals, a first guide pulley is provided on the first guide wheel seat, a second guide pulley is provided on the second guide wheel seat, the second guide wheel seat is fixed on the base plate, a vertical guide rod group is provided on the base plate, the first guide wheel seat slides up and down on the vertical guide rod group, and a tensioning spring is also connected between the vertical guide rod group and the first guide wheel seat, the steel wire rope is sequentially wound around the cable guide wheel, the first guide pulley and the second guide pulley, and then passes through the wire threading hole to be connected to the lamp holder.

[0012] In some embodiments, the mechanical self-locking and self-disengaging locking hook mechanism includes a fixed seat symmetrically arranged on both sides of the bottom plate, a vertical slide groove is provided on the inner side of the fixed seat, a movable seat slides up and down in the vertical slide groove, a first movable groove is provided on one side of the lower end of the movable seat, a movable block and a first spring are movably provided in the first movable groove, a second movable groove is provided at the outer end of the movable block, a movable locking block and a second spring are provided in the second movable groove, the lower side of the outer end of the movable locking block is a guide inclined surface, a fixed locking block is provided on the movable seat and above the movable locking block, a locking space is formed between the movable locking block and the fixed locking block, a convex ring is provided on the upper end of the lamp holder, the convex ring can be locked and fixed in the locking space, and the convex ring is fixed in the locking space when the movable block is in the movable groove. The lifting mechanism is a pair of fixedly mounted on two guide wheels, and the fixedly mounted on two guide wheels is connected to the fixedly mounted on-board wheel frame by means of a forward movement of the wheelchair to move relative to the wheelchair. The supporting tractor has two opposite ends, and the supporting tractor has two opposite ends.

[0013] In some embodiments, the second transmission mechanism includes a mounting bracket provided on one side of the fixed base, a second gear and a third rotating shaft provided on the mounting bracket, and a rack provided on the movable base. When the movable base is located at the lowermost end of the vertical slide groove, the rack and the second gear are disengaged, and when the movable base rises a certain distance, the rack can mesh with the second gear, and a third gear that can mesh with the second gear is provided on the third rotating shaft. It also includes a meshing belt transmission assembly, and the meshing belt transmission assembly includes a first synchronous pulley, a second synchronous pulley and a synchronous belt. The first synchronous pulley is provided on the third rotating shaft, and a fourth gear that can mesh with the main drive gear is rotatably installed on the support frame. In the second transmission mechanisms on the left and right sides, the second synchronous pulley of one meshing belt transmission assembly is coaxially provided on the main drive gear, and the second synchronous pulley of the other meshing belt transmission assembly is coaxially provided on the fourth gear. The main drive gear has the same number of teeth as the first synchronous pulley, the third gear, and the fourth gear, and the number of teeth of the second gear is greater than the number of teeth of the main drive gear.

[0014] In some embodiments, a third spring is provided between the upper end of the movable seat and the vertical sliding groove.

[0015] In some embodiments, a blocking plate is hinged on the front and rear sides of the inner side of the fixed seat, and the blocking plate is used to prevent the movable locking block from extending out of the second movable groove when the movable locking block moves downward following the movable seat. A limiting seat is provided on the lower side of the blocking plate on the fixed seat, and the limiting seat is used to limit the blocking plate from flipping downward.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. First, through the setting of double steel ropes, when one of the steel ropes is damaged or broken, the lamp can also be suspended by the other steel rope, which is extremely safe and suitable for places with dense personnel or high safety requirements. The double-slot steel wire reel rotates by the forward or reverse rotation of the motor, so that the two sets of steel ropes can be unwound or rewound synchronously, thereby driving the lamp holder to rise or fall. It has a simple structure and stable operation, which is suitable for popularization and use.

[0018] 2. Through the setting of the wire arrangement component, the wire rope can be wound in an orderly manner in the double-groove wire reel during the winding process, avoiding the occurrence of disorderly winding of the wire ropes;

[0019] 3. When the lamp holder is raised to the highest point by the traction mechanism (i.e. in normal working state), the lamp holder can be locked by the mechanical self-locking and self-disengaging lock hook mechanism, which can prevent the lamp holder from accidentally falling and greatly improve the safety of the lamp when in use. When the lamp holder needs to be lowered, the mechanical self-locking and self-disengaging lock hook mechanism can automatically unlock the lamp holder to ensure the normal rise and fall of the lamp holder;

[0020] 4. In addition, the movement direction of the wire rope can be guided by setting the tensioning guide pulley assembly, and the wire rope can be kept in a tensioned state.

[0021] 5. Through the arrangement of the first transmission mechanism and the second transmission mechanism, a single motor can simultaneously drive the double-slot wire reel, the cable arrangement assembly, and the mechanical self-locking and self-disengaging hook mechanism to work, thereby saving manufacturing costs and being very energy-efficient. At the same time, space can be reasonably utilized, making the structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a lifter according to the present invention;

[0023] FIG2 is a second structural diagram of the lifter of the present invention;

[0024] FIG3 is a third structural diagram of the lifter of the present invention;

[0025] FIG4 is an enlarged schematic diagram of point A in FIG1 of the present invention;

[0026] FIG5 is a schematic diagram of the winding of one of the steel wire ropes of the present invention;

[0027] FIG6 is a schematic diagram of the winding of another steel wire rope according to the present invention;

[0028] FIG7 is a schematic structural diagram of a cable assembly according to the present invention;

[0029] FIG8 is a cross-sectional view of a mechanical self-locking and self-disengaging hook mechanism according to the present invention;

[0030] FIG9 is a perspective schematic diagram of a mechanical self-locking and self-disengaging hook mechanism according to the present invention;

[0031] FIG10 is an exploded schematic diagram of the mechanical self-locking and self-disengaging hook mechanism of the present invention;

[0032] FIG11 is a schematic diagram of the structure of the cross bar when it rises in the rising guide groove in the present invention;

[0033] FIG12 is a second structural diagram of the crossbar of the present invention when it rises in the rising guide groove;

[0034] FIG13 is a third structural diagram of the crossbar of the present invention when it rises in the rising guide groove;

[0035] FIG14 is a schematic diagram of the structure of the cross bar when descending in the descending guide groove according to the present invention;

[0036] FIG15 is a second structural diagram of the crossbar of the present invention when it descends in the descending guide groove;

[0037] FIG16 is a third structural diagram of the cross bar when descending in the descending guide groove in the present invention. DETAILED DESCRIPTION

[0038] The following detailed description provides various embodiments or examples for implementing the present invention. Of course, these are merely examples or embodiments and are not intended to be limiting. Furthermore, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. Such repetition is for simplicity and clarity in describing the present invention and does not imply a specific relationship between the different embodiments and / or configurations discussed.

[0039] The following figures and specific embodiments further describe the present invention: A compact, anti-fall, high-stability double-wire lamp lifter as shown in Figures 1 to 16 includes a fixing frame 1 and a lamp holder 2 arranged below the fixing frame 1. A traction mechanism for pulling the lamp holder 2 up and down is provided on the fixing frame 1. The traction mechanism includes a double-slot wire reel 3, two sets of wire ropes 4 wound on the double-slot wire reel 3, and a motor 5 that drives the double-slot wire reel 3 to rotate. A tensioning guide pulley assembly, a cable arrangement assembly, a mechanical self-locking and self-disengaging hook mechanism, a first transmission mechanism, and a second transmission mechanism are also provided on the fixing frame 1. The tensioning guide pulley assembly is used to guide the moving direction of the wire rope 4. , and at the same time, it can keep the wire rope 4 in a tensioned state. The wire arrangement assembly is used to guide the wire rope 4 to be reciprocated in the axial direction on the double-groove wire reel 3 for winding or unwinding. The mechanical self-locking and self-disengaging lock hook mechanism is used to automatically lock the lamp holder 2 when the lamp holder 2 rises to the highest point, and when the lamp holder 2 is lowered at the highest point through the traction mechanism, the mechanical self-locking and self-disengaging lock hook mechanism can automatically unlock the lamp holder 2. The first transmission mechanism is used to connect the wire arrangement assembly with the motor 5, and the second transmission mechanism is used to connect the mechanical self-locking and self-disengaging lock hook mechanism with the motor 5. When the motor 5 is working, the wire arrangement assembly and the mechanical self-locking and self-disengaging lock hook mechanism are driven to work by the first transmission mechanism and the second transmission mechanism respectively.

[0040] In the present invention, firstly, by setting up double steel ropes, when one of the steel ropes is damaged or broken, it can also be suspended by the other steel rope, which is extremely safe and suitable for places with dense personnel or high safety requirements. The double-slot steel wire reel 3 is rotated by the forward or reverse rotation of the motor 5, so that the two groups of steel ropes 4 can be synchronously unwound or reeled, thereby driving the lamp holder 2 to rise or fall. The structure is simple, the operation is stable, and it is suitable for popularization and use.

[0041] By setting the wire arrangement assembly, the steel wire rope 4 can be wound in an orderly manner in the double-groove steel wire reel 3 during the winding process, thereby avoiding the occurrence of disorderly winding of the steel wire ropes 4 .

[0042] When the lamp holder 2 is raised to the highest point by the traction mechanism (i.e., in normal working state), the lamp holder 2 can be locked by the mechanical self-locking and self-disengaging lock hook mechanism, which can prevent the lamp holder 2 from accidentally falling and greatly improve the safety of the lamp when in use. When the lamp holder 2 needs to be lowered, the mechanical self-locking and self-disengaging lock hook mechanism can automatically unlock the lamp holder 2 mechanically, ensuring the normal rising and falling of the lamp holder.

[0043] In addition, by providing a tensioning guide pulley assembly, the moving direction of the steel wire rope 4 is guided, and at the same time the steel wire rope can be kept in a tensioned state.

[0044] Through the arrangement of the first transmission mechanism and the second transmission mechanism, a single motor 5 can simultaneously drive the double-slot wire reel 3, the cable arrangement assembly, and the mechanical self-locking and self-disengaging hook mechanism to work, thereby saving manufacturing costs and being very energy-efficient. At the same time, space can be reasonably utilized, making the structure more compact.

[0045] Further, referring to Figures 1 to 3, the fixing frame 1 includes a top plate 21 and a bottom plate 22 spaced apart in an upper and lower manner, and a plurality of columns 23 are connected between the top plate 21 and the bottom plate 22. There are two threading holes on the bottom plate 22 symmetrically with the center of the bottom plate 22 as the center point. Two groups of steel wire ropes 4 are connected to the lamp holder 2 after passing through the threading holes respectively. The top plate 21, the bottom plate 22 and the plurality of columns 23 are connected and fixed by welding or bolts.

[0046] Furthermore, a support frame 31 is provided on the lower side of the top plate 21, the double-slot wire reel 3 is rotatably installed in the support frame 31, the motor 5 is installed on the outside of the support frame 31, and the output shaft of the motor 5 passes through the support frame 31 and is fixedly connected to the double-slot wire reel 3.

[0047] 2 and 7 , the cable arrangement assembly includes an arched frame 41 arranged on the lower side of the top plate 21, a first rotating shaft 42 is rotatably mounted on the arched frame 41, a cylinder 43 is provided on the first rotating shaft 42, a wavy guide groove 44 is provided around the outer wall of the cylinder 43, a sliding frame 45 is slidably provided on the arched frame 41 and below the first rotating shaft 42, a guide column 46 is provided on the upper side of the sliding frame 45, one end of the guide column 46 is movably provided in the wavy guide groove 44, a second rotating shaft 47 is rotatably provided on the lower side of the sliding frame 45, and a cable guide wheel 48 is provided on the second rotating shaft 47.

[0048] The working principle of the cable arrangement assembly is as follows: the guide post 46 on the sliding frame 45 is movably arranged in the wavy guide groove 44 of the cylinder 43, so that when the first rotating shaft 42 and the cylinder 43 rotate, the sliding frame 45 can only be limited to move in the axial direction of the first rotating shaft 42, and then, under the cooperation of the wavy guide groove 45 and the guide post 46, the movable frame 45 and the second rotating shaft 47 and the cable arrangement guide wheel 48 rotatably arranged on the lower side of the sliding frame 45 move back and forth along the axial direction of the first rotating shaft 42, and then, the cable arrangement guide wheel 48 drives the wire rope 4 to move back and forth, so that the wire rope 4 is neatly and orderly arranged and wound in the winding groove of the double-groove wire reel 3.

[0049] Furthermore, the first transmission mechanism includes a main drive gear 51 arranged on the output shaft of the motor 5, a first gear 52 is arranged on the first rotating shaft 42, and a transmission gear set 53 is arranged on the support frame 31 and is located between the main drive gear 51 and the first gear 52 and is in transmission meshing engagement; the motor drives the main drive gear 51 to rotate, the main drive gear 51 is meshed with the transmission gear set 53, and the transmission gear set 53 is then meshed with the first gear 52 on the first rotating shaft 42, thereby driving the first rotating shaft 42 and the cylinder 43 to rotate, thereby driving the cable assembly to work.

[0050] As shown in Figures 5 and 6, the tensioning guide pulley assembly includes a first guide wheel seat 61 and a second guide wheel seat 62 arranged at intervals, a first guide pulley 63 is provided on the first guide wheel seat 61, and a second guide pulley 64 is provided on the second guide wheel seat 62, the second guide wheel seat 62 is fixed on the base plate 22, and a vertical guide rod group 65 is provided on the base plate 22, the first guide wheel seat 61 is slid up and down on the vertical guide rod group 65, and a tensioning spring 66 is also connected between the vertical guide rod group 65 and the first guide wheel seat 61, the wire rope 4 is sequentially wound around the wire guide wheel 48, the first guide pulley 63 and the second guide pulley 64, and then passes through the threading hole 24 to be connected to the lamp holder 2; thereby, the moving direction of the wire rope 4 can be guided, and the wire rope can be kept in a tensioned state.

[0051] 8 to 16 , the mechanical self-locking and self-disengaging hook mechanism includes a fixed seat 71 symmetrically arranged on both sides of the bottom plate 22, a vertical slide groove 72 is provided on the inner side of the fixed seat 71, a movable seat 73 slides up and down in the vertical slide groove 72, a first movable groove 74 is provided on one side of the lower end of the movable seat 73, a movable block 75 and a first spring 76 are movably provided in the first movable groove 74, and a second movable groove 77 is provided on the outer end of the movable block 75. A movable locking block 78 and a second spring 79 are provided in the second movable groove 77. The lower side of the outer end of the movable locking block 78 is a guide slope 701. A fixed locking block 702 is provided on the movable seat 73 and above the movable locking block 78. A locking space 703 is formed between the movable locking block 78 and the fixed locking block 702. A convex ring 704 is provided on the upper end of the lamp holder 2. The convex ring 704 can be locked and fixed in the locking space 703. A cross bar 705 is provided, and a horizontal slide groove 706 is provided on the first movable groove 74. The cross bar 705 passes through and slides in the horizontal slide groove 706. A guide groove group is provided on the two inner side walls of the vertical slide groove 72. The outer end of the cross bar 705 is movably provided in the guide groove group. The guide groove group includes an ascending guide groove 707 and a descending guide groove 708 provided at intervals. When the cross bar 705 is located in the ascending guide groove 707, the movable locking block 78 extends outward from the movable seat 73. When the rod 705 is located in the descending guide groove 708, the movable locking block 78 retracts into the moving seat 73, and the upper and lower ends of the ascending guide groove 707 and the descending guide groove 708 are connected through the inclined guide groove 709. An upper movable guide inclined plate 710 is movably hinged on the upper inclined guide groove 709 for guiding the cross bar 705 into the descending guide groove 708, and a lower movable guide inclined plate 711 is movably hinged on the lower inclined guide groove 709 for guiding the cross bar 705 into the ascending guide groove 707.

[0052] Furthermore, the second transmission mechanism includes a mounting frame 81 provided on one side of the fixed seat 71, a second gear 82 and a third rotating shaft 83 are provided on the mounting frame 81, and a rack 84 is provided on the movable seat 73. When the movable seat 73 is located at the lower end of the vertical slide groove 72, the rack 84 and the second gear 82 are disengaged, and when the movable seat 73 rises a certain distance, the rack 84 can mesh with the second gear 82, and a third gear 85 that can mesh with the second gear 82 is provided on the third rotating shaft 83. It also includes a meshing belt transmission component, which includes a first synchronous pulley 86, a second synchronous pulley 87 and a synchronous belt 88. The first synchronous pulley 86 is arranged on the third rotating shaft 83, and a fourth gear 89 that can mesh with the main drive gear 51 is rotatably installed on the support frame 31. In the second transmission mechanisms on the left and right sides, the second synchronous pulley 87 of one meshing belt transmission assembly is coaxially arranged on the main drive gear 51, and the second synchronous pulley 87 of the other meshing belt transmission assembly is coaxially arranged on the fourth gear 89. The main drive gear 51 has the same number of teeth as the first synchronous pulley 86, the third gear 85, and the fourth gear 89. The number of teeth of the second gear 82 is greater than the number of teeth of the main drive gear 51. A third spring 91 is provided between the upper end of the movable seat 73 and the vertical slide groove 72.

[0053] It should be noted that when the cross bar 705 rises in the rising guide groove 707 and touches the upper movable guide inclined plate 710, the upper movable guide inclined plate 710 can flip over and the cross bar 705 can pass smoothly. Afterwards, the upper movable guide inclined plate 710 can automatically reset through the torsion spring (not shown in the drawings). Therefore, when the cross bar 705 descends, the upper movable guide inclined plate 710 guides the cross bar 705 to the upper inclined guide groove 709 and enters the descending guide groove 708. Finally, the lower inclined guide groove 709 and the lower movable guide inclined plate 711 guide the cross bar 705 into the rising guide groove 707, thereby realizing the reset of the cross bar 705. At the same time, the lower movable guide inclined plate 711 can automatically reset through the torsion spring (not shown in the drawings).

[0054] Furthermore, a blocking plate 92 is hinged at the front and rear sides of the inner side of the fixed seat 71. The blocking plate 92 is used to prevent the movable locking block 78 from extending out of the second movable groove 77 when the movable locking block 78 moves downward following the movable seat 73. A limiting seat 93 is provided on the lower side of the blocking plate 92 on the fixed seat 71. The limiting seat 93 is used to limit the blocking plate 92 from flipping downward.

[0055] When the movable locking block 78 follows the moving seat 73 to rise, since the blocking plate 92 is hingedly arranged, the blocking plate 92 can be directly flipped upward, and the movable locking block 78 follows the moving seat 73 to rise smoothly. Then, the blocking plate 92 is flipped downward and reset under the action of gravity or a torsion spring (not shown in the drawings) and abuts against the limit seat 93; and when the movable locking block 78 follows the moving seat 73 to descend, the guide inclined surface 701 of the movable locking block 78 abuts against the limit seat 93. Since the limit seat 93 is fixed, the movable locking block 78 is retracted into the second movable groove 77 under the action of the second spring 79 and remains retracted in the second movable groove 77. When the moving seat 73 moves to the bottom, the movable locking block 78 is disengaged from the limit seat 93 and extends out of the second movable groove 77 through the action of the second spring 79.

[0056] The specific working principles of the mechanical self-locking and self-disengaging hook mechanism and the second transmission mechanism in the present invention are as follows:

[0057] When the traction mechanism drives the lamp holder 2 to rise, the motor 5 works to rotate the double-slot wire reel 3, so that the two sets of wire ropes 4 can be reeled synchronously, thereby driving the lamp holder 2 to rise; in addition, the output shaft of the motor 5 drives the main drive gear 51 to rotate, and the main drive gear 51 is engaged with the fourth gear 89. Since the second synchronous pulley 87 is provided on the main drive gear 51 and the fourth gear 89, the third rotating shaft 83 on both sides is driven to rotate in opposite directions through the first synchronous pulley 86 and the synchronous belt 88, so that the second gears 82 on the left and right sides rotate in opposite directions, and finally the movable seats 73 on both sides can be driven to rise and fall synchronously; see Figure 8-Figure 9, at this time the lamp holder 2 is in a state after being lowered, that is, the lamp holder 2 is not locked by the movable locking block 78 and the fixed locking block 702, and the rack 84 on the movable seat 73 is not engaged with the second gear 82, so that the second gear 82 is in an idling state.

[0058] If the locking cam 75 is unlocked, the locking cam 78 will be locked and the locking cam 78 will be locked. In addition, since the number of teeth of the second gear 82 is greater than the number of teeth of the main drive gear 51, the transmission ratio is changed, so that the speed of the movable seat 73 rising is greater than the speed of the wire rope 4 rising, so that when the lamp holder 2 rises to the highest point (as shown in FIG13 ), the lamp holder 2 is fixed by the locking space 703 on the movable seat 73, and most of the weight of the lamp holder 2 is supported by the movable seat 2, while the wire rope 4 only pulls a small part of the force on the lamp holder 2, thereby avoiding long-term suspension of the wire rope 4 and accelerating the loss of the wire rope. When the motor 5 fails or the power is cut off, the lamp holder 2 only follows the movable seat 73 and falls to the lower end of the vertical slide groove 72 of the fixed seat 71, and will not fall directly to the ground to cause damage to the lamp or injury to personnel, thereby achieving the purpose of mechanical automatic locking.

[0059] When the lamp holder 2 is lowered, the cross bar 705 on the movable block 75 is at the uppermost position of the rising guide groove 707. The upper movable guide inclined plate 710 guides the cross bar 705 to the upper inclined guide groove 709 and enters the descending guide groove 708. At this time, the movable block 75 is retracted inwardly along the first movable groove 74, and the movable locking block 78 is also retracted along the movable block 75 (as shown in FIG. 14 ). The cross bar 705 moves downward again and enters the lower inclined guide groove 709 (as shown in FIG. 15 ). At this time, the movable block 75 slowly moves outward. However, under the action of the blocking plate 92, the movable locking block 78 does not extend outward. When the cross bar 705 passes through the lower movable guide inclined plate 711, the cross bar 705 is guided to the rising guide groove 709 When the cam 704 is in the groove 707, the movable locking block 78 pops out under the action of the second spring 79. At this time, the convex ring 704 on the lamp holder 2 has fallen a certain distance, and the movable locking block 78 only pops out at the outer edge of the convex ring 704 (as shown in FIG16 ). Of course, due to the weight of the lamp holder 2, the lamp holder 2 will also drop a little, so the movable locking block 78 will not prevent the lamp holder 2 from falling. At this time, the second gear 82 is disengaged from the rack 84, the movable seat 73 stops falling, and the lamp holder 2 and the convex ring 704 continue to fall under the action of the wire rope 4. Therefore, when the convex ring 704 is disengaged from the movable locking block 78, the movable locking block 78 can automatically reset, which is convenient for the next locking work, thereby achieving the purpose of mechanical automatic unlocking.

[0060] The basic principles, main features, and advantages of the present invention are shown and described above in conjunction with the accompanying drawings. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention as claimed. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents. Industrial Applicability

[0061] The technical solution of this case can be manufactured and popularized. Its structure is compact and simple, its operation is stable, it is suitable for promotion and use, and it can produce positive effects.

Claims

1. A compact, fall-proof, high-stability double-wire lamp lifter, comprising a fixing frame (1) and a lamp holder (2) arranged below the fixing frame (1), wherein a traction mechanism for traction of the lamp holder (2) to lift up and down is arranged on the fixing frame (1), wherein the traction mechanism comprises a double-groove steel wire reel (3), two sets of steel wire ropes (4) wound on the double-groove steel wire reel (3), and a motor (5) for driving the double-groove steel wire reel (3) to rotate, characterized in that: The fixing frame (1) is also provided with a tensioning guide pulley assembly, a wire arrangement assembly, a mechanical self-locking and self-detaching hook mechanism, a first transmission mechanism, and a second transmission mechanism. The tensioning guide pulley assembly is used to guide the moving direction of the wire rope (4) and to keep the wire rope (4) in a tensioned state. The wire arrangement assembly is used to guide the wire rope (4) to be arranged reciprocally in the axial direction on the double-grooved wire reel (3) for winding or unwinding. The mechanical self-locking and self-detaching hook mechanism is used to When the lamp holder (2) is raised to the highest point, the lamp holder (2) can be automatically locked, and when the lamp holder (2) is lowered at the highest point through the traction mechanism, the mechanical self-locking and self-disengaging lock hook mechanism can automatically unlock the lamp holder (2), the first transmission mechanism is used to connect the cable assembly to the motor (5), the second transmission mechanism is used to connect the mechanical self-locking and self-disengaging lock hook mechanism to the motor (5), and when the motor (5) is working, the first transmission mechanism and the second transmission mechanism are used to drive the cable assembly and the mechanical self-locking and self-disengaging lock hook mechanism to work respectively.

2. A compact anti-fall high stability double steel wire lamp lifter according to claim 1, characterized in that: The fixing frame (1) comprises a top plate (21) and a bottom plate (22) spaced apart from each other, a plurality of uprights (23) being connected between the top plate (21) and the bottom plate (22), two threading holes being symmetrically arranged on the bottom plate (22) with the center of the circle of the bottom plate (22) as the center point, and two groups of steel wire ropes (4) being connected to the lamp holder (2) after passing through the threading holes respectively.

3. A compact anti-fall high stability double steel wire lamp lifter according to claim 2, characterized in that: A support frame (31) is provided on the lower side of the top plate (21); the double-groove wire reel (3) is rotatably mounted in the support frame (31); the motor (5) is mounted outside the support frame (31); and an output shaft of the motor (5) passes through the support frame (31) and is fixedly connected to the double-groove wire reel (3).

4. A compact, anti-fall, high-stability double-wire lamp lifter according to claim 3, characterized in that: The cable arrangement assembly comprises an arch frame (41) arranged at the lower side of the top plate (21), a first rotating shaft (42) being rotatably mounted on the arch frame (41), a cylinder (43) being arranged on the first rotating shaft (42), a wave-shaped guide groove (44) being arranged around the outer wall of the cylinder (43), a sliding frame (45) slidingly arranged on the arch frame (41) and located below the first rotating shaft (42), a guide column (46) being arranged at the upper side of the sliding frame (45), one end of the guide column (46) being movably arranged in the wave-shaped guide groove (44), a second rotating shaft (47) being rotatably arranged at the lower side of the sliding frame (45), and a cable arrangement guide wheel (48) being arranged on the second rotating shaft (47).

5. A compact anti-fall high stability double steel wire lamp lifter according to claim 4, characterized in that: The first transmission mechanism comprises a main driving gear (51) arranged on the output shaft of the motor (5), a first gear (52) arranged on the first rotating shaft (42), and a transmission gear set (53) on the support frame (31) and located between the main driving gear (51) and the first gear (52) in transmission meshing engagement.

6. A compact anti-fall high stability double steel wire lamp lifter according to claim 4, characterized in that: The tensioning guide pulley assembly comprises a first guide wheel seat (61) and a second guide wheel seat (62) which are arranged at an interval. A first guide pulley (63) is arranged on the first guide wheel seat (61), and a second guide pulley (64) is arranged on the second guide wheel seat (62). The second guide wheel seat (62) is fixedly arranged on a bottom plate (22). A vertical guide rod group (65) is arranged on the bottom plate (22). The first guide wheel seat (61) is slidably arranged on the vertical guide rod group (65) up and down. A tensioning spring (66) is also connected between the vertical guide rod group (65) and the first guide wheel seat (61). The steel wire rope (4) is sequentially wound around the wire arrangement guide wheel (48), the first guide pulley (63) and the second guide pulley (64), and then passes through the threading hole (24) to be connected to the lamp holder (2).

7. A compact anti-fall high stability double steel wire lamp lifter according to claim 5, characterized in that: The mechanical self-locking and self-disengaging hook mechanism comprises a fixed seat (71) symmetrically arranged on both sides of the bottom plate (22), a vertical slide groove (72) is arranged on the inner side of the fixed seat (71), a movable seat (73) slides up and down in the vertical slide groove (72), a first movable groove (74) is arranged on one side of the lower end of the movable seat (73), a movable block (75) and a first spring (76) are movably arranged in the first movable groove (74), a second movable groove (77) is arranged at the outer end of the movable block (75), and a first spring (76) is arranged in the second movable groove (77). A movable locking block (78) and a second spring (79) are provided, the lower side of the outer end of the movable locking block (78) is a guide inclined surface (701), a fixed locking block (702) is provided on the movable seat (73) and above the movable locking block (78), a locking space (703) is formed between the movable locking block (78) and the fixed locking block (702), a convex ring (704) is provided at the upper end of the lamp holder (2), the convex ring (704) can be locked and fixed in the locking space (703), and cross bars (704) are provided on the front and rear sides of the movable block (75). 705), a transverse slide groove (706) is provided on the first movable groove (74), the cross bar (705) passes through and is slidably arranged in the transverse slide groove (706), a guide groove group is provided on the two inner side walls of the vertical slide groove (72), the outer end of the cross bar (705) is movably arranged in the guide groove group, the guide groove group includes an ascending guide groove (707) and a descending guide groove (708) arranged at intervals, when the cross bar (705) is located in the ascending guide groove (707), the movable locking block (78) extends out of the outer side of the movable seat (73), and the cross bar (705) ) is located in the descending guide groove (708), the movable locking block (78) is retracted into the movable seat (73), and the upper and lower ends of the ascending guide groove (707) and the descending guide groove (708) are connected through the inclined guide groove (709), and an upper movable guide inclined plate (710) for guiding the cross bar (705) into the descending guide groove (708) is movably hinged on the upper inclined guide groove (709), and a lower movable guide inclined plate (711) for guiding the cross bar (705) into the ascending guide groove (707) is movably hinged on the lower inclined guide groove (709).

8. A compact anti-fall high stability double steel wire lamp lifter according to claim 7, characterized in that: The second transmission mechanism comprises a mounting frame (81) arranged on one side of the fixed seat (71), a second gear (82) and a third rotating shaft (83) are arranged on the mounting frame (81), a rack (84) is arranged on the movable seat (73), when the movable seat (73) is located at the bottom end of the vertical slide groove (72), the rack (84) and the second gear (82) are in a disengaged relationship, and when the movable seat (73) rises a certain distance, the rack (84) can mesh with the second gear (82), a third gear (85) that can mesh with the second gear (82) is arranged on the third rotating shaft (83), and also comprises a meshing belt transmission component, the meshing belt transmission component comprises a first synchronous pulley (86), a second A synchronous pulley (87) and a synchronous belt (88), wherein the first synchronous pulley (86) is arranged on the third rotating shaft (83), and a fourth gear (89) capable of meshing with the main driving gear (51) is rotatably mounted on the support frame (31). In the second transmission mechanisms on the left and right sides, the second synchronous pulley (87) of one meshing belt transmission component is coaxially arranged on the main driving gear (51), and the second synchronous pulley (87) of the other meshing belt transmission component is coaxially arranged on the fourth gear (89). The main driving gear (51) has the same number of teeth as the first synchronous pulley (86), the third gear (85), and the fourth gear (89), and the number of teeth of the second gear (82) is greater than the number of teeth of the main driving gear (51).

9. A compact, anti-fall, high-stability double-wire lamp lifter according to claim 8, characterized in that: A third spring (91) is provided between the upper end of the movable seat (73) and the vertical sliding groove (72).

10. A compact anti-fall high stability double steel wire lamp lifter according to claim 8, characterized in that: A blocking plate (92) is hingedly connected to the inner side of the fixed seat (71) at the front and rear sides. The blocking plate (92) is used to prevent the movable locking block (78) from extending out of the second movable groove (77) when the movable locking block (78) moves downward following the movable seat (73). A limiting seat (93) is provided on the fixed seat (71) at the lower side of the blocking plate (92). The limiting seat (93) is used to limit the blocking plate (92) from flipping downward.

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