CN112923252A

CN112923252A - Construction LED lamp used in emergency state

Info

Publication number: CN112923252A
Application number: CN202110253809.5A
Authority: CN
Inventors: 林高健
Original assignee: Hangzhou Fuyang Feishang Decoration Engineering Co ltd
Current assignee: Hangzhou Fuyang Feishang Decoration Engineering Co ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2021-06-08
Also published as: CN110067958B; CN112879818A; CN110067958A

Abstract

The invention belongs to the technical field of LED lamps, and particularly relates to a construction LED lamp used in an emergency state, which comprises a lifting outer sleeve, a lifting inner rod, a transmission mechanism and the like, wherein the lifting outer sleeve is fixedly arranged on a base; the height of different requirements of the LED lamp for emergency construction can be freely adjusted in the upper direction and the lower direction; when the lifting inner rod is lifted by shaking the crank, the diameter of the third gear is smaller than the inner diameter of the first circular groove on the second gear, so that the effects of speed reduction and torque increase can be achieved, and an operator can easily lift the lifting inner rod by shaking the crank; compared with the traditional lifting mode by hydraulic transmission, the lifting device has lower production and manufacturing cost; in addition, in the height adjusting process of the LED lamp, the height adjustment of the LED lamp can be realized by one person completely, the LED lamp located at the required height can be automatically positioned without an additional auxiliary limiting device, and the LED lamp height adjusting device is relatively simple in structure and easy and convenient to operate.

Description

Construction LED lamp used in emergency state

Technical Field

The invention belongs to the technical field of LED lamps, and particularly relates to a construction LED lamp used in an emergency state.

Background

At present, the traditional construction LED lamp is widely applied to night construction of various engineering construction sites, and is favored by construction workers at night due to high illumination brightness and wide illumination range. The common construction LED lamps in construction sites are roughly divided into two types of fixed height and adjustable height; for the construction LED lamp with fixed height, the height of the LED lamp cannot be adjusted according to actual requirements in the using process, and the used LED lamp needs to occupy a large space for storage; for the existing height-adjustable construction LED lamp, the defects are as follows: the height of the construction LED lamp is adjusted mainly by a hydraulic device or a manual adjustment mode, wherein the hydraulic device is relatively high in cost, and the construction LED lamp adjusted manually needs an auxiliary limiting device in the height adjusting process, so that the adjustment and disassembly are troublesome and the adjustment process is laborious; therefore, the construction LED lamp which is convenient to adjust the height and saves labor is designed.

The invention designs a construction LED lamp used in an emergency state to solve the problems.

Disclosure of Invention

In order to solve the defects in the prior art, the invention discloses a construction LED lamp used in an emergency state, which is realized by adopting the following technical scheme.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships which the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the equipment or the elements which are referred to must have a specific orientation, be constructed in a specific orientation or be operated, and thus cannot be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The utility model provides a construction LED lamp for under emergency condition which characterized in that: the LED lamp lifting device comprises a base, a lifting outer sleeve, a lifting inner rod, a control module, LED lamps and a transmission mechanism, wherein the lower end face of the base is provided with two guide wheels and two driven wheels, the lifting outer sleeve is fixedly arranged on the base, the upper end of the lifting inner rod which is slidably arranged in the lifting outer sleeve is provided with the control module, the two LED lamps are symmetrically arranged on two sides of the control module respectively through connecting rods, and the transmission mechanism is fixedly arranged on the lifting outer sleeve and is matched with the lifting inner rod.

The transmission mechanism comprises a transmission case, a first gear, a second gear, a first clamping block, a second clamping block, a first shaft, a third gear, a sliding block, a second shaft, a fourth gear, a telescopic plate, a fifth gear, a sixth gear, a seventh gear, a third shaft, an eighth gear, a fourth spring, a telescopic outer sleeve, a trapezoidal guide block, a toothed plate, a telescopic inner rod, a ninth gear, a first spring, a second spring and a third spring, wherein a fixed seat is fixedly arranged in the transmission case; a first circular groove is formed in the center of the upper wheel face of the second gear, and the inner cylindrical surface of the first circular groove is a tooth face; the first gear and the second gear are arranged in the transmission case through a first shaft; the first clamping block is arranged on the second gear and matched with the second clamping block arranged on the first shaft; the sliding block matched with the second shaft bearing is vertically and slidably arranged in a second sliding groove on the fixed seat; the third gear and the fourth gear are arranged on the second shaft, and the third gear is matched with the inner tooth surface of the first circular groove; the fourth spring is arranged at the upper end of the sliding block to reset the movement of the sliding block.

The expansion plate with a third spring inside is arranged on the inner wall of the transmission case; a fifth gear is arranged at one end of the telescopic plate and matched with the fourth gear; a sixth gear and a fifth gear which are arranged on the inner wall of the transmission case through a shaft are matched; the seventh gear and the eighth gear are coaxially arranged in the transmission case through a third shaft, and the seventh gear is meshed with the sixth gear; the trapezoidal guide block arranged on the side surface of the telescopic outer sleeve obliquely slides in the trapezoidal guide groove on the inner wall of the transmission case, and the toothed plate arranged on the oblique side surface of the telescopic outer sleeve is meshed with the eighth gear; the telescopic inner rod with one end provided with a ninth gear is slidably arranged in the telescopic outer sleeve, and the ninth gear is matched with the first gear and the tooth surface of the lifting inner rod; the first spring is arranged in the telescopic outer sleeve and resets the motion of the telescopic inner rod; the second spring is installed in flexible overcoat one end, resets flexible overcoat motion.

A crank is arranged at one end of the second shaft, which vertically slides in the first chute.

As a further improvement of the technology, the inner wall of the lifting outer sleeve is symmetrically provided with two first guide grooves; two first guide blocks are symmetrically arranged on two sides of the lower end of the lifting inner rod and respectively slide in the two first guide grooves; the first guide block is matched with the first guide groove to ensure that the lifting inner rod cannot be separated from the lifting outer sleeve when moving upwards along the lifting outer sleeve to the extreme position.

As a further improvement of the technology, a second circular groove is formed in the center of the first circular groove, the first clamping block is installed on the inner wall of the second circular groove, and the second clamping block is located in the second circular groove; the first clamping block and the second clamping block are hidden in the second gear due to the existence of the second circular groove, so that the space in the transmission box occupied by the first clamping block and the second clamping block is reduced, and the internal mechanism of the transmission mechanism is more compact.

As a further improvement of the technology, two second guide grooves are symmetrically formed on the inner wall of the second sliding chute; two second guide blocks are symmetrically arranged on two sides of the sliding block and respectively slide in the two second guide grooves; the cooperation of second guide block and second guide slot has guaranteed that the slider can not break away from in the second spout when sliding along the second spout.

As a further improvement of the present technology, the fourth spring is an extension spring, one end of which is connected to the top surface of the first sliding chute, and the other end of which is connected to the upper end surface of the sliding block; the fourth spring is always in a stretching state, and the third gear is guaranteed to be always meshed with the inner tooth surface of the first circular groove in the second gear under the action of no external force.

As a further improvement of the technology, the inner wall of the telescopic outer sleeve is symmetrically provided with two third guide grooves; two third guide blocks are symmetrically arranged on two side surfaces of the telescopic inner rod, and the two third guide blocks slide in the two third guide grooves respectively; the cooperation of third guide block and third guide slot guarantees that the interior pole of stretching out and drawing back can not break away from in the flexible overcoat when following the flexible overcoat motion.

As a further improvement of the technology, the inner wall of the transmission case is provided with a compression spring plate, and one end of the telescopic outer sleeve is connected with the compression spring plate through a telescopic column; the second spring is nested on the telescopic column, one end of the second spring is connected with the end face of the telescopic outer sleeve, and the other end of the second spring is connected with the pressure spring plate. The telescopic column is used for preventing the spring nested on the telescopic column from bending when being compressed.

As a further improvement of the technology, the third spring is a compression spring, one end of the third spring is connected with the inner wall of the telescopic sleeve of the telescopic plate, and the other end of the third spring is connected with the end face of the telescopic inner plate of the telescopic plate; the central connecting line of the fourth gear and the fifth gear is vertical to the telescopic plate, and the design can ensure that the fifth gear and the sixth gear are disengaged, so that the function of preventing interference between the gears is achieved.

As a further improvement of the present technology, the third spring is always in a compressed state, which can ensure that the fifth gear and the fourth gear are kept in a mutual meshing state at any time, and when the fourth gear and the fifth gear are meshed at any time, ensure that the fifth gear is not meshed with the fourth gear under the condition of need, and once the needed condition disappears, the fifth gear can immediately establish a meshing relationship with the fourth gear again.

As a further improvement of the technology, the elastic coefficient of the second spring is larger than that of the third spring, so that the fourth gear and the fifth gear are not in a meshing transmission relationship in the ascending process of the lifting inner rod, and the fifth gear does small-amplitude high-frequency reciprocating jumping under the action of the fourth gear.

The control module is connected with the two LED lamps through signal lines respectively, and controls the brightness and the irradiation angle of the LED lamps.

The two LED lamps are respectively connected with an external power supply through wires.

Compared with the traditional construction LED lamp, the height of different requirements can be freely adjusted in the upper direction and the lower direction by the LED lamp for emergency construction; when the lifting inner rod is lifted by shaking the crank, the diameter of the third gear is smaller than the inner diameter of the first circular groove on the second gear, so that the effects of speed reduction and torque increase can be achieved, and an operator can easily lift the lifting inner rod by shaking the crank; in the whole process of adjusting the height, the crank handle is completely shaken by an operator to carry out purely mechanical transmission; compared with the traditional lifting mode by hydraulic transmission, the lifting device has lower production and manufacturing cost; in addition, in the height adjusting process of the LED lamp, the height adjustment of the LED lamp can be realized by one person completely, the LED lamp positioned at the required height can be automatically positioned without an additional auxiliary limiting device, the structure is relatively simple, and the operation is simple and convenient; the invention has simple structure and better use effect.

Drawings

Fig. 1 is a schematic view of the entire apparatus.

FIG. 2 is a cross-sectional view of the transmission mechanism and the lifter.

FIG. 3 is a cross-sectional view of the base, the outer sheath and the inner rod.

Fig. 4 is a schematic view of the transmission mechanism.

Fig. 5 is a schematic view of the telescopic inner rod, the telescopic outer sleeve, the first spring and the second spring.

FIG. 6 is a cross-sectional view of the retractable plate and the transmission case.

Fig. 7 is a schematic cross-sectional view of the transmission case, the fixing base, the first gear, the second gear, the third gear, the fourth gear, the sixth gear, the seventh gear, and the eighth gear.

FIG. 8 is a cross-sectional view of the first gear, the second gear, the third gear, the slider, the fourth gear, and the second guide block.

Fig. 9 is a schematic cross-sectional view of the transmission case, the telescopic jacket, the toothed plate and the trapezoidal guide block.

Fig. 10 is a schematic view of the fixing base.

Fig. 11 is a schematic view of a transmission case.

Fig. 12 is a schematic view of the internal transmission of the transmission mechanism.

Fig. 13 is a schematic view of the second gear, the third gear, the first shaft, the first latch, and the second latch.

Number designation in the figures: 1. a base; 2. a guide wheel; 3. a driven wheel; 4. lifting the outer sleeve; 5. a first guide groove; 6. a first guide block; 7. an inner lifting rod; 8. a control module; 9. a connecting rod; 10. an LED lamp; 11. a transmission mechanism; 12. a transmission case; 13. a trapezoidal guide groove; 14. a first chute; 15. a transmission groove; 16. a first gear; 17. a second gear; 18. a first circular groove; 19. a second circular groove; 20. a first clamping block; 21. a second fixture block; 22. a first shaft; 23. a third gear; 24. a slider; 25. a second guide block; 26. a second shaft; 27. a fourth gear; 28. a retractable plate; 29. a fifth gear; 30. a sixth gear; 31. a seventh gear; 32. a third axis; 33. an eighth gear; 34. a fourth spring; 35. a telescopic outer sleeve; 36. a third guide groove; 37. a trapezoidal guide block; 38. a toothed plate; 39. a telescopic inner rod; 40. a third guide block; 41. a ninth gear; 42. a first spring; 43. a compression spring plate; 44. a telescopic column; 45. a second spring; 46. a third spring; 47. a fixed seat; 48. a second chute; 49. a second guide groove.

Detailed Description

The drawings are schematic illustrations of the implementation of the present invention to facilitate understanding of the principles of structural operation. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1, the LED lamp lifting device comprises a base 1, a lifting outer sleeve 4, a lifting inner rod 7, a control module 8, LED lamps 10 and a transmission mechanism 11, wherein the two guide wheels 2 and the two driven wheels 3 are mounted on the lower end face of the base 1, the lifting outer sleeve 4 is fixedly mounted on the base 1, the control module 8 is mounted at the upper end of the lifting inner rod 7 slidably mounted in the lifting outer sleeve 4, the two LED lamps 10 are symmetrically mounted on two sides of the control module 8 through connecting rods 9 respectively, and the transmission mechanism 11 is fixedly mounted on the lifting outer sleeve 4 and matched with the lifting inner rod 7.

As shown in fig. 4, the transmission mechanism 11 includes a transmission case 12, a first gear 16, a second gear 17, a first latch 20, a second latch 21, a first shaft 22, a third gear 23, a slider 24, a second shaft 26, a fourth gear 27, a retractable plate 28, a fifth gear 29, a sixth gear 30, a seventh gear 31, a third shaft 32, an eighth gear 33, a fourth spring 34, a retractable outer sleeve 35, a trapezoidal guide block 37, a toothed plate 38, a retractable inner rod 39, a ninth gear 41, a first spring 42, a second spring 45, and a third spring 46, wherein as shown in fig. 7, a fixed seat 47 is fixedly mounted in the transmission case 12; as shown in fig. 13, the second gear 17 has a first circular groove 18 at the center on the face, and the inner cylindrical surface of the first circular groove 18 is a tooth surface; as shown in fig. 6 and 7, the first gear 16 and the second gear 17 are mounted in the transmission case 12 by a first shaft 22; as shown in fig. 13, the first latch 20 is mounted on the second gear 17 to cooperate with the second latch 21 mounted on the first shaft 22; as shown in fig. 7 and 8, the sliding block 24 bearing-fitted with the second shaft 26 is vertically slidably mounted in the second sliding slot 48 on the fixed seat 47; as shown in fig. 7 and 12, the third gear 23 and the fourth gear 27 are mounted on the second shaft 26, and the third gear 23 is matched with the internal tooth surface of the first circular groove 18; a fourth spring 34 is mounted on the upper end of the slide 24 to return the movement of the slide 24.

As shown in fig. 5, the extension plate 28 having the third spring 46 therein is mounted on the inner wall of the transmission case 12; as shown in fig. 6, 8 and 12, a fifth gear 29 is mounted at one end of the telescopic plate 28, and the fifth gear 29 is matched with the fourth gear 27; a sixth gear 30 mounted on the inner wall of the transmission case 12 by a shaft is engaged with the fifth gear 29; a seventh gear 31 and an eighth gear 33 are coaxially mounted in the transmission case 12 through a third shaft 32, and the seventh gear 31 is meshed with the sixth gear 30; as shown in fig. 5, 9 and 11, the trapezoidal guide block 37 mounted on the side surface of the telescopic outer sleeve 35 slides obliquely in the trapezoidal guide groove 13 on the inner wall of the transmission case 12, and the toothed plate 38 mounted on the oblique side surface of the telescopic outer sleeve 35 is engaged with the eighth gear 33; as shown in fig. 2 and 12, the telescopic inner rod 39 with one end provided with a ninth gear 41 is slidably arranged in the telescopic outer sleeve 35, and the ninth gear 41 is matched with the tooth surfaces of the first gear 16 and the lifting inner rod 7; as shown in fig. 5, the first spring 42 is installed in the telescopic sheath 35 to reset the movement of the telescopic inner rod 39; the second spring 45 is installed at one end of the telescopic outer sleeve 35 to reset the movement of the telescopic outer sleeve 35.

As shown in fig. 7 and 12, a crank is mounted on one end of the second shaft 26 that vertically slides on the first chute 14.

As shown in fig. 3, two first guide grooves 5 are symmetrically formed on the inner wall of the lifting outer sleeve 4; two first guide blocks 6 are symmetrically arranged on two sides of the lower end of the lifting inner rod 7, and the two first guide blocks 6 respectively slide in the two first guide grooves 5; the cooperation of the first guide block 6 and the first guide groove 5 ensures that the inner lifting rod 7 cannot be separated from the outer lifting sleeve 4 when moving upwards along the outer lifting sleeve 4 to the extreme position.

As shown in fig. 13, a second circular groove 19 is formed at the center of the first circular groove 18, the first latch 20 is mounted on the inner wall of the second circular groove 19, and the second latch 21 is located in the second circular groove 19; the existence of the second circular groove 19 enables the first fixture block 20 and the second fixture block 21 to be hidden in the second gear 17, so that the space in the transmission case 12 occupied by the first fixture block 20 and the second fixture block 21 is reduced, and the internal mechanism of the transmission mechanism 11 is more compact.

As shown in fig. 8 and 10, two second guide grooves 49 are symmetrically formed on the inner wall of the second slide groove 48; two second guide blocks 25 are symmetrically arranged on two sides of the sliding block 24, and the two second guide blocks 25 respectively slide in the two second guide grooves 49; the cooperation of the second guide block 25 and the second guide groove 49 ensures that the sliding block 24 will not be separated from the second sliding groove 48 when sliding along the second sliding groove 48.

As shown in fig. 7, the fourth spring 34 is an extension spring, one end of which is connected to the top surface of the first chute 14 and the other end of which is connected to the upper end surface of the slider 24; the fourth spring 34 is always in a stretched state, and the third gear 23 is ensured to be always meshed with the inner tooth surface of the first circular groove 18 on the second gear 17 under the action of no external force.

As shown in fig. 5, two third guide grooves 36 are symmetrically formed on the inner wall of the telescopic outer sleeve 35; two third guide blocks 40 are symmetrically arranged on two side surfaces of the telescopic inner rod 39, and the two third guide blocks 40 respectively slide in the two third guide grooves 36; the engagement of the third guide block 40 with the third guide slot 36 ensures that the telescopic inner rod 39 cannot be disengaged from the telescopic outer sleeve 35 when moving along the telescopic outer sleeve 35.

As shown in fig. 12, a compression spring plate 43 is mounted on the inner wall of the transmission case 12, and one end of the telescopic jacket 35 is connected with the compression spring plate 43 through a telescopic column 44; the second spring 45 is nested on the telescopic column 44, one end of the second spring is connected with the end face of the telescopic outer sleeve 35, and the other end of the second spring is connected with the compression spring plate 43. The telescopic post 44 is intended to prevent buckling of the spring nested therein when compressed.

As shown in fig. 12, the third spring 46 is a compression spring, one end of which is connected to the inner wall of the telescopic sleeve of the telescopic plate 28, and the other end of which is connected to the end face of the telescopic inner plate of the telescopic plate 28; the central line of the fourth gear 27 and the fifth gear 29 is perpendicular to the telescopic plate 28, and the design can ensure that the fifth gear 29 and the sixth gear 30 are disengaged, thereby playing a role of preventing interference between the gears.

As shown in fig. 12, the third spring 46 is always in a compressed state, so that the fifth gear 29 and the fourth gear 27 can be ensured to be in a mutual meshing state at any time, the fifth gear 29 is ensured not to be meshed with the fourth gear 27 under the condition that the fourth gear 27 is meshed with the fifth gear 29 at any time, and once the required condition disappears, the fifth gear 29 can be immediately meshed with the fourth gear 27 again.

As shown in fig. 12, the elastic coefficient of the second spring 45 is greater than the elastic coefficient of the third spring 46, so that the fourth gear 27 and the fifth gear 29 are not in a meshing transmission relationship during the ascending process of the lifter rod 7, and the fifth gear 29 makes a small-amplitude high-frequency reciprocating bounce under the action of the fourth gear 27.

The control module 8 of the invention is the prior art, and is respectively connected with two LED lamps 10 through signal wires, and the control module 8 controls the brightness and the irradiation angle of the LED lamps 10.

The two LED lamps 10 are respectively connected with an external power supply through leads.

The working process of the invention is as follows: in the initial state, the lifting inner rod 7 is positioned at the lowest end, the first spring 42 and the second spring 45 are both in a compressed state, and the ninth gear 41 is simultaneously meshed with the tooth surfaces of the first gear 16 and the lifting inner rod 7; the third gear 23 is engaged with the inner tooth surface of the first circular groove 18 of the second gear 17, the fifth gear 29 is simultaneously engaged with the fourth gear 27 and the sixth gear 30, and the first latch 20 is contacted with the second latch 21.

As shown in fig. 12, when the construction LED lamp 10 is used, the lamp head needs to be adjusted to a certain required height, the crank is clockwise shaken by hand, the crank drives the third gear 23 and the fourth gear 27 to rotate clockwise through the second shaft 26, the fourth gear 27 wants to drive the fifth gear 29 to rotate, and the fifth gear 29 drives the telescopic outer sleeve 35 to move obliquely downward along the trapezoidal guide slot 13 through the sixth gear 30, the seventh gear 31, the eighth gear 33, the third toothed plate 38 and the telescopic outer sleeve 35; since the elastic coefficient of the first spring 42 is greater than that of the third spring 46, the compressed first spring 42 prevents the movement of the telescopic housing 35, and thus the rotation of the sixth gear 30, the seventh gear 31, and the eighth gear 33; in order to avoid causing the dead lock, the continuously rotating fourth gear 27 drives the telescopic plate 28 to repeatedly contract and extend through the fifth gear 29, the third spring 46 positioned in the telescopic plate 28 is repeatedly further compressed and extended, and the fifth gear 29 repeatedly makes small-amplitude high-frequency jumping without forming a meshing transmission relationship with the fourth gear 27 and the sixth gear 30; the ninth gear 41 is always meshed with the first gear 16 and the lifting inner rod 7; meanwhile, the third gear 23 drives the first gear 16 to rotate clockwise through the second gear 17, the first latch 20 and the first shaft 22; the first gear 16 drives the lifting inner rod 7 to move upwards along the lifting outer sleeve 4; at this time, the first gear 16 rotating clockwise tends to rotate the ninth gear 41 engaged therewith counterclockwise, and the tooth surface of the elevation inner lever 7 moving upward along the elevation outer jacket 4 tends to rotate the ninth gear 41 engaged therewith clockwise; the teeth of the lifting inner rod 7 and the teeth of the first gear 16 act together to prevent the ninth gear 41 from rotating and generate an upward oblique thrust on the ninth gear 41; when the teeth of the lifting inner rod 7 and the teeth of the first gear 16 are separated from the corresponding teeth of the ninth gear 41 at the same time, the fifth gear 29 approaches the lifting inner rod 7 and the first gear 16 under the combined action of the first spring 42 and the second spring 45; in the process of ascending the lifting inner rod 7, the ninth gear 41 repeatedly makes small-amplitude high-frequency reciprocating bounce along the direction of the trapezoidal guide groove 13, and the ninth gear 41 does not limit the ascending motion of the lifting inner rod 7.

When the lifting inner rod 7 is adjusted to a proper required height, the crank is stopped to be shaken and the handle is released, under the combined action of the first spring 42 and the second spring 45, teeth on the ninth gear 41 are instantly embedded between teeth on the first gear 16 and the lifting inner rod 7, the lifting inner rod 7 is about to move downwards by self weight, the lifting inner rod 7 can drive the first gear 16 to rotate anticlockwise, the lifting inner rod 7 and the first gear 16 which are about to move reversely clamp the ninth gear 41 embedded in the upper teeth, the lifting inner rod 7 and the ninth gear 41 do not move, and the height of the lifting inner rod 7 is fixed; at the same time, the fifth gear 29 is meshed with the fourth gear 27 and the sixth gear 30 by the third spring 46.

As shown in fig. 12, when the lamp head of the LED lamp 10 needs to be adjusted from a high position to a low position, the crank is reversely swung counterclockwise, the crank drives the third gear 23 and the fourth gear 27 to rotate counterclockwise through the second shaft 26, and the first latch 20 mounted on the second gear 17 is separated from the second latch 21 mounted on the first shaft 22; the fourth gear 27 drives the telescopic outer sleeve 35 to move obliquely upwards along the trapezoidal guide groove 13 through the fifth gear 29, the sixth gear 30, the seventh gear 31, the eighth gear 33 and the toothed plate 38, and the second spring 45 is further compressed; the first spring 42 located inside the telescopic housing 35 gradually releases energy and stretches; when the third guide block 40 moves to the limit position along the third guide groove 36, the telescopic outer sleeve 35 drives the telescopic inner rod 39 to move obliquely upwards through the third guide block 40, the ninth gear 41 gradually disengages from the first gear 16 and the lifting inner rod 7, and the limitation on the movement of the lifting inner rod 7 and the first gear 16 is removed; when the ninth gear 41 releases the motion restriction on the lifting inner rod 7 and the first gear 16, the lifting inner rod 7 moves downwards along the lifting outer sleeve 4 under the action of self weight; the lifting inner rod 7 drives the second fixture block 21 to instantly catch up with the first fixture block 20 through the first gear 16 and the first shaft 22; continuing to shake the crank, and slowly moving the lifting inner rod 7 downwards under the stop of the first fixture block 20 which is slowly moving; when the teeth of the lowest end of the toothed plate 38 are in contact with the teeth of the eighth gear 33, the telescopic jacket 35 is dynamically maintained in this position under the combined action of the second spring 45 and the clockwise rotating eighth gear 33.

When the target position is adjusted downwards, the second shaft 26 is pulled downwards through the crank, so that the slide block 24 moves downwards along the second guide groove 49, the fourth spring 34 is further stretched, the third gear 23 is separated from the second gear 17, and the fourth gear 27 is separated from the fifth gear 29; when the constraint of the fourth gear 27 is lost, under the combined action of the second spring 45 and the third spring 46, the telescopic outer sleeve 35 instantly drives the ninth gear 41 to be meshed with the lifting inner rod 7 and the first gear 16 through the telescopic inner rod 39; meanwhile, the constraint of the third gear 23 is lost, the first fixture block 20 on the second gear 17 loses the constraint of the second fixture block 21, the lifting inner rod 7 moves downwards along the lifting outer sleeve 4 by means of self weight, and the lifting inner rod 7 drives the first gear 16 to rotate anticlockwise; because the teeth on the ninth gear 41 are instantly embedded between the teeth on the first gear 16 and the lifting inner rod 7, and the ninth gear 41 is subjected to a downward oblique force, the ninth gear 41 is clamped between the teeth on the first gear 16 and the lifting inner rod 7, and the lifting inner rod 7 is prevented from descending by itself; when the ninth gear 41 is reset, the user releases his hand, and under the action of the fourth spring 34, the slider 24 drives the third gear 23 and the fourth gear 27 to reset through the second shaft 26, the third gear 23 and the fourth gear 27 are meshed with the second gear 17 and the fifth gear 29 again, and the LED lamp 10 is adjusted downwards to the target position and fixed.

When the LED lamp 10 is used, the lifting inner rod 7 needs to be lowered to the lowest position; at this time, the crank is reversely shaken counterclockwise, the crank drives the third gear 23 and the fourth gear 27 to rotate counterclockwise through the second shaft 26, the fourth gear 27 drives the telescopic jacket 35 to move obliquely upward along the trapezoidal guide groove 13 through the fifth gear 29, the sixth gear 30, the seventh gear 31, the eighth gear 33 and the toothed plate 38, the telescopic jacket 35 drives the ninth gear 41 to separate from the lifting inner rod 7 and the first gear 16 through the third guide block 40 and the telescopic inner rod 39, the ninth gear 41 removes the limitation on the first gear 16 and the lifting inner rod 7, the first spring 42 releases energy, and the second spring 45 is further compressed.

When the ninth gear 41 releases the motion restriction on the lifting inner rod 7 and the first gear 16, the lifting inner rod 7 moves downwards along the lifting outer sleeve 4 under the action of self weight; the lifting inner rod 7 drives the second fixture block 21 to instantly catch up with the first fixture block 20 through the first gear 16 and the first shaft 22; continuing to shake the crank, and slowly moving the lifting inner rod 7 downwards under the stop of the first fixture block 20 which is slowly moving; when the lifting inner rod 7 is lowered to the initial position, the second shaft 26 is pulled downwards, so that the slide block 24 moves downwards along the second guide groove 49, the fourth spring 34 is further stretched, the third gear 23 is separated from the second gear 17, and the fourth gear 27 is separated from the fifth gear 29; when the constraint of the fourth gear 27 is lost, under the combined action of the second spring 45 and the third spring 46, the telescopic outer sleeve 35 instantly drives the ninth gear 41 to return to the initial position through the telescopic inner rod 39 and is meshed with the lifting inner rod 7 and the first gear 16 again; then, the hand is released, under the action of the fourth spring 34, the sliding block 24 drives the third gear 23 and the fourth gear 27 to reset through the second shaft 26, the third gear 23 and the fourth gear 27 are meshed with the second gear 17 and the fifth gear 29 again, and the resetting of the emergency construction LED lamp 10 is finished.

In conclusion, the invention has the beneficial effects that: the LED lamp 10 for emergency construction can freely adjust the heights with different requirements in the upper direction and the lower direction; when the lifting inner rod 7 is lifted by shaking the crank by the transmission mechanism 11, the diameter of the third gear 23 is smaller than the inner diameter of the first circular groove 18 on the second gear 17, so that the effect of reducing speed and increasing torque can be achieved, and an operator can easily lift the lifting inner rod 7 by shaking the crank; in the whole process of adjusting the height, the crank handle is completely shaken by an operator to carry out purely mechanical transmission; compared with the traditional lifting mode by hydraulic transmission, the lifting device has lower production and manufacturing cost; in addition, in the height adjustment process of the LED lamp 10, the height adjustment of the LED lamp 10 can be realized by one person, the LED lamp 10 located at the required height can be automatically positioned without an additional auxiliary limiting device, the structure is relatively simple, and the operation is simple and convenient.

Claims

1. The utility model provides a construction LED lamp for under emergency condition which characterized in that: the LED lamp lifting device comprises a base, a lifting outer sleeve, a lifting inner rod, a control module, LED lamps and a transmission mechanism, wherein the lower end face of the base is provided with two guide wheels and two driven wheels;

the transmission mechanism comprises a transmission case, a first gear, a second gear, a first clamping block, a second clamping block, a first shaft, a third gear, a sliding block, a second shaft, a fourth gear, a telescopic plate, a fifth gear, a sixth gear, a seventh gear, a third shaft, an eighth gear, a fourth spring, a telescopic outer sleeve, a trapezoidal guide block, a toothed plate, a telescopic inner rod, a ninth gear, a first spring, a second spring and a third spring, wherein a fixed seat is fixedly arranged in the transmission case; a first circular groove is formed in the center of the upper wheel face of the second gear, and the inner cylindrical surface of the first circular groove is a tooth face; the first gear and the second gear are arranged in the transmission case through a first shaft; the first clamping block is arranged on the second gear and matched with the second clamping block arranged on the first shaft; the sliding block matched with the second shaft bearing is vertically and slidably arranged in a second sliding groove on the fixed seat; the third gear and the fourth gear are arranged on the second shaft, and the third gear is matched with the inner tooth surface of the first circular groove; the fourth spring is arranged at the upper end of the sliding block and resets the movement of the sliding block;

the expansion plate with a third spring inside is arranged on the inner wall of the transmission case; a fifth gear is arranged at one end of the telescopic plate and matched with the fourth gear; a sixth gear and a fifth gear which are arranged on the inner wall of the transmission case through a shaft are matched; the seventh gear and the eighth gear are coaxially arranged in the transmission case through a third shaft, and the seventh gear is meshed with the sixth gear; the trapezoidal guide block arranged on the side surface of the telescopic outer sleeve obliquely slides in the trapezoidal guide groove on the inner wall of the transmission case, and the toothed plate arranged on the oblique side surface of the telescopic outer sleeve is meshed with the eighth gear; the telescopic inner rod with one end provided with a ninth gear is slidably arranged in the telescopic outer sleeve, and the ninth gear is matched with the first gear and the tooth surface of the lifting inner rod; the first spring is arranged in the telescopic outer sleeve and resets the motion of the telescopic inner rod; the second spring is arranged at one end of the telescopic outer sleeve and used for resetting the telescopic outer sleeve;

a crank is arranged at one end of the second shaft, which vertically slides in the first chute;

two second guide grooves are symmetrically formed in the inner wall of the second sliding groove; two second guide blocks are symmetrically arranged on two sides of the sliding block and respectively slide in the two second guide grooves;

two third guide grooves are symmetrically formed in the inner wall of the telescopic outer sleeve; two third guide blocks are symmetrically arranged on two side surfaces of the telescopic inner rod, and the two third guide blocks slide in the two third guide grooves respectively;

two first guide grooves are symmetrically formed in the inner wall of the lifting outer sleeve; two first guide blocks are symmetrically arranged on two sides of the lower end of the lifting inner rod and respectively slide in the two first guide grooves;

a second circular groove is formed in the center of the first circular groove, the first clamping block is installed on the inner wall of the second circular groove, and the second clamping block is located in the second circular groove;

the fourth spring is an extension spring, one end of the fourth spring is connected with the top surface of the first sliding chute, and the other end of the fourth spring is connected with the upper end surface of the sliding block; the fourth spring is always in a stretched state.

2. The LED lamp for construction in an emergency state, according to claim 1, is characterized in that: the inner wall of the transmission case is provided with a compression spring plate, and one end of the telescopic outer sleeve is connected with the compression spring plate through a telescopic column; the second spring is nested on the telescopic column, one end of the second spring is connected with the end face of the telescopic outer sleeve, and the other end of the second spring is connected with the pressure spring plate.

3. The LED lamp for construction in an emergency state, according to claim 1, is characterized in that: the third spring is a compression spring, one end of the third spring is connected with the inner wall of the telescopic sleeve of the telescopic plate, and the other end of the third spring is connected with the end face of the telescopic inner plate of the telescopic plate; the central connecting line of the fourth gear and the fifth gear is vertical to the expansion plate.

4. The construction LED lamp used in an emergency state according to claim 3, wherein: the third spring is always in a compressed state.

5. The LED lamp for construction in an emergency state, according to claim 1, is characterized in that: the elastic coefficient of the second spring is larger than that of the third spring.