CN211846954U - A high-efficiency rescue tripod - Google Patents

Abstract

The utility model discloses a high-effect rescue tripod, it is three including three landing leg and being located the top cap on landing leg top, be provided with the pulley on the top cap, one of them install the capstan winch on the landing leg, the drive end detachable of capstan winch is connected with and is used for the drive capstan winch pivoted hand-held type electric drive device. Thus, the utility model relates to a high-effect rescue tripod, hand-held type electric drive device can replace the manpower to wave the crank and drive in order to the capstan, has saved user's physical demands greatly. The rescue has higher efficiency, the number of the personnel is saved, and the physical consumption is reduced.

Description

A high-efficiency rescue tripod

technical field

The utility model relates to the field of rescue equipment, in particular to a high-efficiency rescue tripod, which in particular effectively improves rescue efficiency and safe operation simplicity.

Background technique

Rescue tripods are suitable for high-altitude, cliff and confined space operations. Common confined spaces include various storage tanks, containers, closed transportation channels, underground pipes (such as cable trenches), tunnels, grain silos, shafts, sewers, sewage wells, most of which are Unconventional, non-continuous work place. Widely used in firefighting, municipal and other professional rescue organizations, lifting heavy objects, etc.

At present, most of the existing rescue tripod structures include three legs, a top frame supported on the ground by the three legs, and legs are connected to the lower ends of the three legs respectively. The ends of the safety chain are connected together, a pulley is arranged under the top frame, a reel holder is fixed on one leg, a reel is arranged on the reel holder, a rocker is connected to the reel shaft, and a pull rope is wound around the reel. The end of the pull rope is connected with a loop around the pulley.

When in use, the staff needs to manually turn the rocker to release or retract the pull rope wound on the reel, which will consume a lot of physical strength of the staff. People relay. This greatly limits the rescue efficiency of the rescue tripod.

In view of this, the applicant has conducted in-depth research on the above-mentioned defects in the prior art, resulting in this case.

Utility model content

The main purpose of the utility model is to provide a high-efficiency rescue tripod, which has the characteristics of saving manpower and improving rescue efficiency.

In order to achieve the above-mentioned purpose, the solution of the present utility model is:

A high-efficiency rescue tripod, which includes three legs and a top cover located at the top of the three legs, the top cover is provided with a pulley, and a winch is installed on one of the legs, and the winch The driving end is detachably connected with a hand-held electric driving device for driving the winch to rotate.

Further, the top cover includes a first extension portion, a second extension portion and a third extension portion extending outward from the center, and one ends of the first extension portion, the second extension portion and the third extension portion are connected to each other, An inner recess is formed between two adjacent extension parts; the first extension part, the second extension part and the third extension part are respectively connected with the upper ends of the three legs; Two pulley installation side plates arranged in the extending direction of the first extension part, a pulley installation groove is formed between the two pulley installation side plates, and the pulley installation groove extends from the outer end of the first extension part to the second extension part A first pulley corresponding to the outer end of the first extension and a concave formed corresponding to the second extension and the third extension are arranged in the pulley installation groove. A second pulley, the winch is provided on a leg connected to the first extension.

Further, the top cover is integrally cast and formed; the lower ends of the first extension part, the second extension part and the third extension part are respectively formed with upwardly concave installation cavities, and the three legs are hinged through connecting pieces. in three of the mounting cavities.

Further, the first extension part, the second extension part and the third extension part are respectively formed with a first ear plate on the side, and a first installation hole is formed on the first ear plate.

Further, the concave part between the first extension part and the second extension part and the concave part between the first extension part and the third extension part are respectively formed with second lugs, and the second lugs are formed with The second installation hole is connected with the first lifting ring screw.

Further, the pulley installation side plate is provided with an anti-dropping pin located above the first pulley and the second pulley respectively, one end of the anti-dropping pin is connected with an anti-dropping rope, and one end of the anti-dropping rope is connected with the anti-dropping pin respectively. Located on both sides of the pulley installation side plate, the anti-lost rope passes through the through holes of the pulley installation side plate between the first pulley and the second pulley.

Further, a rechargeable battery is provided in the hand-held electric drive device.

Further, the winch is connected to the outrigger through a mounting plate, a first arc-shaped groove for fitting with the outrigger is formed on the side of the mounting plate close to the outrigger, and the outrigger is away from the first arc. One side of the arc-shaped slot is provided with a gripping block, a second arc-shaped slot is formed on the gripping block, and between the first arc-shaped slot and the second arc-shaped slot, there is a hole passing through the leg. Fastening bolts, the heads of the fastening bolts are embedded and fixed in the mounting plate, and the side of the holding block groove away from the first arc-shaped groove is provided with a threaded connection on the fastening bolts fastening handle.

Further, a planetary reducer is connected between the winch and the hand-held electric drive device.

Further, the planetary reducer includes a reducer casing and three planetary gears, a sun gear and an internal fixed gear located in the reducer casing, the three planetary gears rotate around a sun gear, and the three planetary gears The wheel is meshed and connected with the internal fixed gear; the sun gear is connected with the hand-held electric drive device, and the three planetary gears are connected on the turntable, and the turntable is connected with an output shaft, and the output shaft is connected with the hand-held electric drive device. The drive end connection of the winch.

Further, the outrigger includes a telescopic outer tube, a telescopic middle tube and a telescopic inner tube, the lower end of the telescopic outer tube is formed with a through hole, and the telescopic middle tube and the telescopic inner tube are formed with radially spaced distribution. Through holes, the telescopic middle tube is connected with the telescopic outer tube and the telescopic inner tube respectively through positioning pins.

Further, a base frame is hinged on the lower end of the support leg, and the base frame and the support leg are connected by a second eyebolt screw.

Further, the winch includes a fixed shaft seat, a rope take-up drum, a power shaft and a reduction gear set; the rope take-up drum is coaxially sleeved on the fixed shaft seat; the fixed shaft seat is installed on one of the a mounting cavity for accommodating and installing the reduction gear set is formed in the fixed shaft seat; a mounting hole arranged along the axis is arranged on the fixed shaft seat, and the power shaft is rotatably connected to the mounting hole inside; the rope take-up drum is provided with an internal gear; the input end and the output end of the reduction gear group are respectively connected with the power shaft and the internal gear on the rope take-up drum.

Further, the fixed shaft seat is provided with a bearing, and the rope take-up drum is coaxially rotatably connected to the bearing on the fixed shaft seat.

Further, the fixed shaft seat includes a first seat body and a second seat body, the installation cavity is formed on the first seat body, the installation hole is formed on the second seat body, and the first seat body It is connected with the second seat body through a fixing piece.

Further, a mounting plate is connected to the first base body, and the winch is fixedly installed through the mounting plate.

Further, an inner drive key is formed at one end of the power shaft away from the reduction gear set.

Further, an anti-skid rope groove is provided on the rope take-up drum, and a rope take-up frame is fixedly connected to one end of the fixed shaft seat close to the anti-skid rope groove.

Further, a speed reducer is connected to one end of the power shaft away from the reduction gear set, the speed reducer is fixedly installed on the fixed shaft seat, the power shaft is connected to the low-speed end of the speed reducer, and the speed reducer is connected to the low-speed end of the speed reducer. The high-speed end of the device is connected to the external rotational power.

Further, the reduction gear set includes a first driving gear, a second driving gear, a first transmission gear, a second transmission gear and a reversing gear; the first driving gear is fixedly connected to the power shaft, and the first driving gear is Two driving gears are sleeved on the power shaft, a first ratchet mechanism is arranged between the second driving gear and the power shaft; the first transmission gear and the second transmission gear are coaxially arranged, and the first A second ratchet mechanism is arranged between a transmission gear and a second transmission gear, the reversing gear is meshed with the first driving gear and the first transmission gear, respectively, and the second transmission gear is respectively connected with the The internal gear is meshed with the second driving gear.

Further, the reduction ratio of the drive shaft to the internal gear through the first drive gear, the reversing gear, the first transmission gear and the second transmission gear is greater than that of the drive shaft through the second drive gear and the second transmission gear. The reduction ratio of the transmission gear to the internal gear.

Further, the number of teeth of the reversing gear is the same as that of the first transmission gear, and the number of teeth of the first transmission gear is greater than the number of teeth of the second transmission gear.

After adopting the above structure, the utility model relates to a high-efficiency rescue tripod, which at least has the following beneficial effects:

1. The hand-held electric drive device can replace the manpower to shake the handle to drive the winch, which greatly saves the user's physical energy consumption. It makes the rescue more efficient, saves the number of personnel, reduces physical energy consumption and rescue costs.

2. The ropes go around the second pulley in sequence from bottom to top, pass through the pulley installation groove and then go around the first pulley and wrap around the winch. The rope wound on the second pulley passes downward just through the inner recess formed between the second extension part and the third extension part, so that the rope hangs down through the second pulley and is located near the center of the tripod.

3. The top cover is integrally formed by casting, the manufacturing difficulty can be greatly reduced by casting, and only the holes on the top cover need to be processed, which not only ensures the strength of use but also facilitates manufacturing.

Fourth, the second lug plate provides the installation position of the first eyebolt screw, and the first eyebolt screw on the second lug plate can be hung with a protective pulley for wearing a protective rope to increase safety performance.

5. The outrigger includes a telescopic outer tube, a telescopic middle tube and a telescopic inner tube that are telescopically arranged. When not in use, the telescopic middle tube and the telescopic inner tube can be stored in the telescopic outer tube to reduce the volume occupied by the tripod. When the tripod is in use, a protection chain can be connected between the second lifting ring screws on the three legs to limit the maximum distance between the adjacent legs, thereby ensuring the normal use of the tripod.

Compared with the prior art, the utility model drives the winch by means of a hand-held electric drive device, which greatly reduces the physical strength consumption of the user and makes the rescue more efficient.

Description of drawings

FIG. 1 is a schematic three-dimensional structure diagram of a high-efficiency rescue tripod according to the present invention.

FIG. 2 is a schematic three-dimensional structure diagram of another angle of the present invention.

FIG. 3 is a schematic top view of the structure of the top cover.

4 to 6 are schematic perspective views of the top cover.

FIG. 7 is a schematic view of the bottom view of the top cover.

Figure 8 is a schematic diagram of the exploded structure of the mounting plate and the holding block.

FIG. 9 is a schematic diagram of the exploded structure of the mounting plate and the holding block from another angle.

FIG. 10 is a schematic view of the assembled three-dimensional structure of the mounting plate and the holding block.

FIG. 11 is a schematic diagram of the connection structure of the winch and the hand-held electric drive device.

FIG. 12 is a schematic cross-sectional structural diagram of the planetary reducer.

Figure 13 is a schematic diagram of the exploded structure of the planetary reducer.

Figure 14 is a schematic structural diagram of the connection between the hand-held electric drive device and the winch.

Figure 15 is a schematic diagram of the exploded structure of the winch.

Figure 16 is a schematic cross-sectional structure diagram of the winch.

FIG. 17 is a schematic three-dimensional structure diagram of a fixed shaft seat and a reduction gear set.

FIG. 18 is a schematic three-dimensional structure diagram of the fixed axle seat.

Figures 19 and 20 are schematic views of the three-dimensional structure of the installation of the power shaft and the reduction gear set.

FIG. 21 is a schematic front view of the structure of the power shaft and the reduction gear set.

FIG. 22 is a schematic view of the rear view of the power shaft and the reduction gear set.

Figure 23 is a schematic diagram of a ratchet mechanism.

In the picture:

Outrigger 1; telescopic outer tube 11; telescopic middle tube 12; telescopic inner tube 13; base frame 14; second eyebolt 15; through hole 16; positioning pin 17;

Top cover 2; first extension part 21; second extension part 22; third extension part 23; inner recess 24;

pulley installation side plate 25; pulley installation groove 251; first pulley 252; second pulley 253; installation cavity 26;

The first ear plate 27; the first mounting hole 271; the second reinforcing rib 272;

The second lug plate 28; the second mounting hole 281; the first eye bolt 282; the first reinforcing rib 283;

Anti-lost pin 29; Anti-lost rope 291; Key ring 292;

Planetary reducer 31; reducer housing 310; planetary gear 311; sun gear 312; internal fixed gear 313; turntable 314; output shaft 315;

Mounting plate 4; first arc groove 41; holding block 42; second arc groove 421; tightening bolt 43; tightening handle 44;

Handheld Electric Drive 5.

winch 6; fixed shaft seat 61; first seat body 611; second seat body 612; mounting cavity 613; mounting hole 614; bearing 615;

Rope take-up drum 62; Internal gear 621; Anti-skid rope groove 622; Rope take-up frame 623; Raised strip 624;

Power shaft 63; Inner drive key 631;

The reduction gear set 64; the first driving gear 641; the second driving gear 642; the first transmission gear 643; the second transmission gear 644;

Detailed ways

In order to further explain the technical solutions of the present utility model, the present utility model will be described in detail below through specific embodiments.

As shown in FIGS. 1 to 22 , it is a high-efficiency rescue tripod according to the present invention, comprising three outriggers 1 and a top cover 2 located at the top of the three outriggers 1 , and the top cover 2 is on the A pulley is provided, and a winch 6 is installed on one of the legs 1 , and the winch 6 is detachably connected with a hand-held electric drive device 5 for driving the winch 6 to rotate. In this way, in the high-efficiency rescue tripod involved in the present invention, the hand-held electric drive device 5 can replace the manpower to shake the crank handle to drive the winch 6, which greatly saves the user's physical strength consumption. It makes the rescue more efficient, saves the number of personnel and reduces physical energy consumption.

Preferably, as shown in FIG. 3 to FIG. 7 , the top cover 2 includes a first extension part 21 , a second extension part 22 and a third extension part 23 extending outward from the center. The first extension part 21 One ends of the second extension part 22 and the third extension part 23 are connected to each other, and a concave part 24 is formed between the two adjacent extension parts; the first extension part 21, the second extension part 22 and the third extension part The parts 23 are respectively connected with the upper ends of the three legs 1; the upper end of the top cover 2 is formed with two pulley installation side plates 25 arranged along the extending direction of the first extension part 21, and the two pulley installation side plates 25 are formed between the two pulley installation side plates 25. There is a pulley installation groove 251, the pulley installation groove 251 extends from the outer end of the first extension part 21 to the inner recess 24 formed by the second extension part 22 and the third extension part 23; the pulley installation groove 251 A first pulley 252 corresponding to the outer end of the first extending portion 21 and a second pulley 253 corresponding to the inner concave portion 24 formed by the second extending portion 22 and the third extending portion 23 are respectively provided. The first extension portion 21 is connected to the outrigger 1 . The ropes go around the second pulley 253 sequentially from bottom to top, pass through the pulley installation groove 251 and then go around the first pulley 252 and are wound around the winch 6 . The rope wound on the second pulley 253 just passes through the inner recess 24 formed between the second extension part 22 and the third extension part 23 downward, so that the rope hangs down on the tripod through the second pulley 253 Close to the center.

Preferably, as shown in FIG. 5 and FIG. 7 , the top cover 2 is integrally formed by casting; the lower ends of the first extension part 21 , the second extension part 22 and the third extension part 23 are respectively formed with upwardly recessed In the installation cavity 26 , the three legs 1 are hinged in the three installation cavities 26 through connecting pieces such as bolts and nuts, respectively. The top cover 2 is integrally formed by casting, and the manufacturing difficulty can be greatly reduced by casting, and only the holes on the top cover 2 need to be processed, which not only ensures the strength of use but also facilitates manufacturing.

Preferably, the first extension part 21 , the second extension part 22 and the third extension part 23 are respectively formed with a first ear plate 27 at the side, and a first installation hole 271 is formed on the first ear plate 27 . The first mounting hole 271 on the first lug plate 27 provides a support point for mounting other accessory components required for lifting, which facilitates the expansion of the tripod function. Preferably, the concave portion 24 between the first extending portion 21 and the second extending portion 22 and the concave portion 24 between the first extending portion 21 and the third extending portion 23 are respectively formed with second ear plates 28 , so A second mounting hole 281 is formed on the second lug plate 28 , and a first eyebolt 282 is connected to the second mounting hole 281 . The second lug plate 28 provides the installation position of the first eyebolt 282, and the first eyebolt 282 on the second lug plate 28 can be hung with a protective pulley for threading the protective rope to increase safety performance. The first ear plate 27 and the second ear plate 28 are integrally cast on the top cover 2 during production, and the first ear plate 27 and the second ear plate 28 can be The connection strength of the first ear plate 27 and the second ear plate 28 and the extension part.

Furthermore, as shown in FIG. 7 , first reinforcing ribs 283 corresponding to the second lugs 28 are formed in the mounting cavity 26 of the first extension portion 21 . In order to increase the connection strength between the second ear plate 28 and the extension part. A second reinforcing rib 272 connected to the first ear plate 27 and the second ear plate 28 is also formed on the outer part of the extension part.

Preferably, the pulley installation side plate 25 is provided with anti-dropping pins 29 located above the first pulley 252 and the second pulley 253 respectively, and one end of the anti-dropping pins 29 is connected with an anti-losing rope 291, and the anti-losing rope 291 is connected with The connected ends of the anti-falling pins 29 are located on both sides of the pulley mounting side plate 25 respectively. The rope is wound around the first pulley 252 and the second pulley 253, and the anti-falling pin 29 is arranged on the upper part of the rope, so that when the rope slides on the first pulley 252 and the second pulley 253, due to the The rope can only slide on the inner side of the pulley installation side plate 25 due to the resistance of the anti-falling pin 29 , and it is not easy to slip out of the pulley installation groove 251 to cause accidents. The anti-lost rope 291 passes through the through hole on the pulley mounting side plate 25, and the anti-lost rope 291 and the anti-fallout pin 29 are connected by a key ring 292, which is formed by a metal wire spiral, and the key ring 292 The diameter of the pulley is larger than the outer diameter of the through hole on the side plate 25 of the pulley installation. This facilitates the connection and disassembly of the anti-lost rope 291 and the anti-fallout pin 29 . The ends of the anti-lost rope 291 connected to the anti-fall-off pin 29 are located on both sides of the pulley installation side plate 25, respectively. To prevent the anti-falling pin 29 from disengaging from the pulley installation side plate 25.

Preferably, a rechargeable battery is provided in the hand-held electric drive device 5 . In this way, the hand-held electric drive device 5 can be powered by a rechargeable battery when there is no commercial power in the field, which greatly expands the adaptability of the tripod.

Preferably, as shown in FIG. 8 to FIG. 10 , the winch 6 is connected to the outrigger 1 through a mounting plate 4 , and a side of the mounting plate 4 close to the outrigger 1 is formed to fit with the outrigger 1 . The first arc-shaped groove 41 of the leg 1 is provided with a holding block 42 on the side of the leg 1 away from the first arc-shaped groove 41, and a second arc-shaped groove 421 is formed on the holding block 42. Between the first arc-shaped groove 41 and the second arc-shaped groove 421, a fastening bolt 43 passing through the leg 1 is arranged, and the head of the fastening bolt 43 is embedded and fixed in the mounting plate 4, A tightening handle 44 threadedly connected to the tightening bolt 43 is provided on the side of the holding block 42 groove away from the first arc groove 41 . By tightening the tightening handle 44, the first arc-shaped groove 41 and the second arc-shaped groove 421 are fitted on the leg 1 and the tightening bolt 43 passing through the leg 1, The fastening and installation of the installation plate 4 is realized, and the winch 6 is installed and connected to the installation plate 4 by screws.

Preferably, as shown in FIG. 11 , a planetary reducer 31 is connected between the winch 6 and the hand-held electric drive device 5 . Through the deceleration effect of the planetary reducer 31, the torque of the hand-held electric drive device 5 to drive the winch 6 to rotate is increased, thereby improving the lifting capacity of the tripod. As shown in FIG. 12 and FIG. 13 , the planetary reducer includes a reducer casing 310 and three planetary gears 311 , a sun gear 312 and an internal fixed gear 313 located in the reducer casing 310 . The wheel 311 rotates around a sun gear 312, and the three planetary gears 311 are meshed and connected with the internal fixed gear 313; the sun gear 312 is connected with the handheld electric drive device 5, and the three planetary gears 311 are connected with each other. On the turntable 314 , an output shaft 315 is connected to the turntable 314 , and the output shaft 315 is connected to the driving end of the winch 6 to drive the rope on the winch 6 to rotate.

Preferably, the outrigger 1 includes a telescopic outer tube 11 , a telescopic middle tube 12 and a telescopic inner tube 13 , the lower end of the telescopic outer tube 11 is formed with a through hole 16 , the telescopic middle tube 12 and the telescopic inner tube 13 There are through holes 16 spaced along the radial direction formed thereon, and the telescopic middle tube 12 is connected with the telescopic outer tube 11 and the telescopic inner tube 13 through positioning pins 17 respectively. Further, the telescopic outer tube 11 , the telescopic middle tube 12 and the telescopic inner tube 13 are elliptical pipe parts. Preferably, a base frame 14 is hinged to the lower end of the outrigger 1 , and the base frame 14 and the outrigger 1 are connected by a second eyebolt 15 . The outrigger 1 includes a telescopic outer tube 11, a telescopic middle tube 12 and a telescopic inner tube 13 that are telescopically arranged. The volume occupied by the tripod. When the tripod is in use, a protection chain can be connected between the second lifting ring screws 15 on the three legs 1 to limit the maximum distance between the adjacent legs 1, so as to ensure the normal use of the tripod. The base frame 14 is hinged on the lower end of the outrigger 1 . When in use, the base frame 14 is in contact with the ground, which increases the contact area between the lower end of the outrigger 1 and the ground.

Preferably, as shown in FIGS. 15 to 23 , the winch 6 includes a fixed shaft seat 61 , a rope take-up drum 62 , a power shaft 63 and a reduction gear set 64 ; the rope take-up drum 62 is coaxially rotatably sleeved on the fixed shaft A mounting cavity 613 for accommodating and installing the reduction gear set 64 is formed in the fixed shaft base 61 ; the fixed shaft base 61 is provided with a mounting hole 614 arranged along the axis, and the power shaft 63 rotates connected in the installation hole 614; the rope take-up drum 62 is provided with an internal gear 621; the input end and output end of the reduction gear set 64 are respectively connected with the power shaft 63 and the rope take-up drum The internal gear 621 is drive-connected.

In this way, the external power drives the power shaft 63, and the power shaft 63 drives the internal gear 621 on the rope take-up drum 62 to rotate through the reduction gear set 64; due to the power shaft 63 and the reduction gear set 64 and the internal gear 621 are both located inside the rope take-up drum 62, and the reduction gear set 64 and the internal gear 621 cannot be contacted from the outside, and the structure is more compact.

Preferably, the fixed shaft seat 61 is provided with a bearing 615 , and the rope take-up drum 62 is coaxially rotatably connected to the bearing 615 on the fixed shaft seat 61 . The bearing 615 reduces the relative rotational resistance between the rope take-up drum 62 and the fixed shaft seat 61 .

Preferably, the fixed shaft seat 61 includes a first seat body 611 and a second seat body 612 , the installation cavity 613 is formed on the first seat body 611 , and the installation hole 614 is formed in the second seat body 612 Above, the first seat body 611 and the second seat body 612 are connected by a fixing member. By manufacturing the first seat body 611 and the second seat body 612 separately, and then assembling the fixing shaft seat 61 by connecting the fixing parts, the processing of the fixing shaft seat 61 is greatly facilitated. The production efficiency of the fixed shaft seat 61 is improved.

A mounting plate 4 is connected to the first base body 611 , and the winch 6 is fixedly installed through the mounting plate 4 . Through the mounting plate 4, it is convenient for the winch 6 to be fixedly connected to the rescue tripod or other fixed objects.

Preferably, an inner drive key 631 is formed at one end of the power shaft 63 away from the reduction gear set 64 . The external power is connected with the inner drive key 631 on the power shaft 63 to drive the power shaft 63 to rotate.

Preferably, an anti-skid rope groove 622 is provided on the rope take-up drum 62 , and a rope take-up frame 623 is fixedly connected to one end of the fixed shaft seat 61 close to the anti-skid rope groove 622 . The middle of the rope is wound on the rope take-up drum 62 several times, the free end of the rope is wound in the anti-skid rope groove 622 once, and the telescopic end hangs freely through the rope take-up frame 623 . A plurality of protruding strips 624 parallel to the axis of the slimming cylinder are formed on the rope retracting cylinder 62 , and a plurality of the protruding strips 624 are arranged at equal intervals along the circumference of the rope retracting cylinder 62 .

Preferably, the reduction gear set 64 includes a first driving gear 641, a second driving gear 642, a first transmission gear 643, a second transmission gear 644 and a reversing gear 645; the first driving gear 641 is fixedly connected to the On the power shaft 63, the second driving gear 642 is sleeved on the power shaft 63, and a first ratchet mechanism is arranged between the second driving gear 642 and the power shaft 63; the first transmission The gear 643 and the second transmission gear 644 are coaxially arranged, a second ratchet mechanism is arranged between the first transmission gear 643 and the second transmission gear 644, and the reversing gear 645 is respectively connected with the first driving gear 641 and the second transmission gear 644. The first transmission gear 643 is in meshing connection, and the second transmission gear 644 is meshed and connected with the internal gear 621 and the second driving gear 642 respectively.

By arranging the first driving gear 641, the second driving gear 642, the first transmission gear 643, the second transmission gear 644 and the reversing gear 645, when the external power drives the power shaft 63 to rotate forward, the power passes through the A driving gear 641, a reversing gear 645, a first transmission gear 643 and a second transmission gear 644 are transmitted to the internal gear 621, the rope take-up drum 62 rotates in the forward direction, and the second driving gear 642 is in the Driven by the second transmission gear 644 , the power shaft 63 spins idly on the power shaft 63 in a direction opposite to the rotation direction of the power shaft 63 . When the external power drives the power shaft 63 to reverse, the power is transmitted to the internal gear 621 through the second driving gear 642 and the second transmission gear 644, and the rope take-up drum 62 rotates forward. The transmission gear 643 and the second transmission gear 644 rotate in opposite directions under the action of the second ratchet mechanism.

By setting the two power paths as different reduction ratios, the forward rotation and the reverse rotation of the power shaft 63 are realized respectively corresponding to the high and low speed rotation of the rope take-up drum 62 .

Preferably, the reduction ratio of the driving shaft to the internal gear 621 via the first driving gear 641, the reversing gear 645, the first transmission gear 643 and the second transmission gear 644 is greater than that of the driving shaft passing through the first transmission gear 643 and the second transmission gear 644. The reduction ratio of the second driving gear 642 and the second transmission gear 644 to the internal gear 621 . Preferably, the number of teeth of the reversing gear 645 is the same as that of the first transmission gear 643 , and the number of teeth of the first transmission gear 643 is greater than the number of teeth of the second transmission gear 644 .

Compared with the prior art, the utility model drives the winch 6 by setting the hand-held electric drive device 5, which greatly reduces the physical strength consumption of the user and makes the rescue more efficient.

The above-mentioned embodiments and drawings do not limit the product form and style of the present invention, and any appropriate changes or modifications made by those of ordinary skill in the technical field should be regarded as not departing from the scope of the present invention.

Claims (10)

1. A high-efficiency rescue tripod, characterized in that it comprises three legs and a top cover located at the top of the three legs, the top cover is provided with a pulley, and a winch is installed on one of the legs , the drive end of the winch is detachably connected with a hand-held electric drive device for driving the winch to rotate. 2 . The high-efficiency rescue tripod according to claim 1 , wherein the top cover comprises a first extension part, a second extension part and a third extension part extending outward from the center, the first extension part and the third extension part extending outward from the center. One end of the extension part, the second extension part and the third extension part are connected to each other, and a concave part is formed between the two adjacent extension parts; the first extension part, the second extension part and the third extension part are respectively connected with the upper ends of the three legs; the upper end of the top cover is formed with two pulley installation side plates arranged along the extending direction of the first extension part, and a pulley installation groove is formed between the two pulley installation side plates, and the pulley The installation groove extends from the outer end of the first extension part to the inner recess formed by the second extension part and the third extension part; the pulley installation groove is provided with first pulleys corresponding to the outer ends of the first extension part respectively and a second pulley corresponding to the inner recess formed by the second extension and the third extension, the winch is provided on the leg connected with the first extension. 3 . The high-efficiency rescue tripod according to claim 2 , wherein the top cover is integrally formed by casting; the lower ends of the first extension part, the second extension part and the third extension part are formed respectively. 4 . There are upwardly recessed installation cavities, and the three legs are hinged in the three installation cavities through connecting pieces respectively. 4 . The high-efficiency rescue tripod of claim 2 , wherein the concave portion between the first extension portion and the second extension portion, and the inner recess between the first extension portion and the third extension portion. 5 . The concave parts are respectively formed with second lugs, the second lugs are formed with second installation holes, and the second installation holes are connected with the first lifting ring screws. 5 . The high-efficiency rescue tripod according to claim 2 , wherein the pulley mounting side plates are provided with anti-drop pins respectively located above the first pulley and the second pulley, and one end of the anti-drop pins is connected with 5 . Anti-lost rope, one end of the anti-lost rope connected with the anti-fall pin is located on both sides of the pulley installation side plate, and the anti-lost rope passes through the pulley installation side plate and is located between the first pulley and the second pulley through holes. 6. A high-efficiency rescue tripod according to claim 1, wherein the winch comprises a fixed shaft seat, a rope take-up drum, a power shaft and a reduction gear set; on the fixed shaft seat; an installation cavity for accommodating and installing the reduction gear set is formed in the fixed shaft seat; an installation hole arranged along the axis is arranged on the fixed shaft seat, and the power shaft is rotatably connected to the The rope take-up drum is provided with an internal gear; the input end and the output end of the reduction gear group are respectively connected with the power shaft and the internal gear on the rope take-up drum. 7. A high-efficiency rescue tripod according to claim 1, characterized in that, further, the winch is connected to the outrigger through a mounting plate, and a side of the mounting plate close to the outrigger is formed to be used for connecting with the outrigger. The first arc-shaped groove to which the outriggers fit, the side of the outrigger away from the first arc-shaped groove is provided with a holding block, and a second arc-shaped groove is formed on the holding block. Between the arc-shaped groove and the second arc-shaped groove, a tightening bolt passing through the leg is arranged, the head of the tightening bolt is embedded and fixed in the mounting plate, and the holding block groove is far away from the mounting plate. One side of the first arc-shaped groove is provided with a tightening handle screwed on the tightening bolt. 8 . The high-efficiency rescue tripod of claim 1 , wherein a planetary reducer is connected between the winch and the handheld electric drive device. 9 . 9 . The high-efficiency rescue tripod according to claim 8 , wherein the planetary reducer comprises a reducer casing and three planetary gears, a sun gear and an inner gear located in the reducer casing. 10 . Fixed gear, three planetary gears rotate around a sun gear, and the three planetary gears are meshed and connected with the internal fixed gear; the sun gear is connected with the hand-held electric drive device, and the three planetary gears are connected at On the turntable, an output shaft is connected with the turntable, and the output shaft is connected with the driving end of the winch. 10. The high-efficiency rescue tripod according to claim 1, wherein the outrigger comprises a telescopic outer tube, a telescopic middle tube and a telescopic inner tube, and a through hole is formed at the lower end of the telescopic outer tube, and the The telescopic middle tube and the telescopic inner tube are formed with radially spaced through holes, and the telescopic middle tube and the telescopic outer tube and the telescopic inner tube are respectively connected by positioning pins.

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