CN101791455B

CN101791455B - Lifesaving device

Info

Publication number: CN101791455B
Application number: CN2010101155567A
Authority: CN
Inventors: 史越华; 李贤�
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-02
Filing date: 2010-03-02
Publication date: 2011-06-08
Anticipated expiration: 2030-03-02
Also published as: CN101791455A

Abstract

The invention discloses a lifesaving device, comprising a guide belt, a housing, a speed measuring mechanism and a speed reducing mechanism; the housing is sheathed on the guide belt; the speed measuring mechanism and the speed reducing mechanism are installed on the housing; the speed measuring mechanism comprises a speed measuring gear and a rubbed housing contacted with the guide belt in rolling manner; the speed reducing mechanism comprises a speed reducing housing having a gradually changed friction factor with the guide belt during the rotating process and a speed reducing gear for driving the speed reducing housing to rotate; the speed measuring gear is engaged with the speed reducing gear; a centrifugal speed measuring device which can be connected with the rubbed housing and speed measuring gear to drive the speed measuring gear to rotate is installed on the rubbed housing when the rotation speed of the rubbed housing reaches a pre-set value. The lifesaving device can effectively control the descending speed of the heavy article to prevent the heavy article from being descended fast. The lifesaving device is suitable for saving life on high buildings, and is capable of preventing people from being descended fast; and the lifesaving device with simple and compact structure takes small space and does not need to assemble.

Description

A kind of lifesaving appliance

Technical field

The present invention relates to a kind of lifesaving appliance, particularly a kind of lifesaving appliance of controlling object decrease speed when certain altitude descends.

Background technology

At present, exist some to be used for the product of high-rise building life saving on the market, their complex structures also have many auxiliary equipment except the groundwork device, need to install; The decrease speed that has can not be controlled automatically needs manual adjustments; The device that has uses not convenient factor in that the user of service is quantitatively restricted or the like; Like this under particular surroundings or special personnel use and will have any problem.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of lifesaving appliance that can control the maximum falling speed of object automatically.

In order to solve the problems of the technologies described above, the present invention includes pilot tape, shell, velocity measurement mechanisms and reducing gear, shell is enclosed within on the pilot tape, velocity measurement mechanisms and reducing gear are arranged on the shell, velocity measurement mechanisms comprises measure speed gears and the friction housing that contacts with the pilot tape rolling, reducing gear is included in the coefficient of friction in the rotation process and between pilot tape decelerating casing that gradually changes and the reduction gearing that can drive the decelerating casing rotation, measure speed gears and reduction gearing are meshed, the friction housing is provided with and can connects friction housing and measure speed gears to drive the centrifugal velometer of measure speed gears rotation when friction housing rotating speed reaches certain value, drive in the decelerating casing rotating process in reduction gearing, decelerating casing is to become big direction gradually towards the coefficient of friction between decelerating casing and pilot tape to rotate.

In order to make velocity measurement mechanisms sensitive reliable, described velocity measurement mechanisms comprises support bar, and described friction housing, centrifugal velometer and measure speed gears, the friction housing is with measure speed gears can be relative to being arranged on the support bar that support bar rotates, centrifugal velometer comprises probe, housing and spring I, probe and spring I are arranged in the housing, probe is connected with housing by spring I, the housing of centrifugal velometer fixes with the friction housing, one side of measure speed gears is provided with and is enclosed within the outer flange of an end that the friction housing is equipped with centrifugal velometer, flange is provided with probe hole radially, when spring I is in free state, the head of probe does not exceed the periphery of the housing that rubs, when spring I was stretched to certain-length, the head of probe extend in the probe hole on the flange.

For reducing gear can be slowed down fast, described reducing gear comprises main gear down device and supplementary speed reduction means, main gear down device comprises power transmission shaft, spring II, and described decelerating casing and reduction gearing, decelerating casing can be relative to being arranged on the power transmission shaft that power transmission shaft rotates, spring II is enclosed within on the power transmission shaft, the end of spring II is fixed on the decelerating casing, the other end of spring II is fixed on the power transmission shaft, reduction gearing is fixed on the power transmission shaft, the surface of decelerating casing is provided with the friction teeth that tooth depth uprises in a circumferential direction gradually, main gear down device and supplementary speed reduction means are in the both sides of pilot tape respectively, supplementary speed reduction means is fixed on the shell, the power transmission shaft of main gear down device is rotating to be arranged on the shell, when spring II is in free state, the freely through gap of pilot tape is arranged between decelerating casing and the supplementary speed reduction means, and when spring II relatively rotates in the process of straining owing to decelerating casing and power transmission shaft, the gap between decelerating casing and the supplementary speed reduction means diminishes gradually.

For service efficiency and the scope that improves device, described velocity measurement mechanisms and reducing gear respectively have two, two velocity measurement mechanisms are in the both sides of pilot tape respectively, a reducing gear is in the top of two velocity measurement mechanisms, another reducing gear is in the below of two velocity measurement mechanisms, the corresponding one by one engagement of the measure speed gears of two groups of velocity measurement mechanisms and reducing gear and reduction gearing.

On pilot tape, skid with the housing that prevents to rub for the ease of hanging weight, the present invention includes and be useful on the suspension strap that hangs weight, the support bar opposite shell has the activity surplus on the horizontal direction, the support bar of velocity measurement mechanisms is arranged on the shell, and suspension strap is suspended on the support bar of two velocity measurement mechanisms.

In order to make the probe sensitivity of centrifugal velometer, the housing of described centrifugal velometer comprises test the speed housing and base, base is tubbiness, probe comprises cylindrical head and the cylindrical bottom that fuses with head, the bottom radius of probe is greater than the interior radius of circle of base, the bottom of probe was connected by spring I with the interior end of base, the housing that tests the speed be an end be the uncovered other end be provided with the head of probe can be by the intransitable hole, bottom of popping one's head in, the housing opening end that tests the speed is enclosed within on the base, and probe and spring I are in the cavity of test the speed housing and base formation.

Fixing reliable for the housing that makes centrifugal velometer, described support bar is provided with the bearing I I that cylindrical is taper, and the housing of centrifugal velometer is stuck between bearing I I and the friction housing.

In order to improve the reliability of centrifugal velometer, described each velocity measurement mechanisms includes the centrifugal velometer of three circumference uniform distributions between bearing I I and friction housing, is evenly distributed in six probe holes on the flange of measure speed gears.

Useful result of the present invention: the present invention detects the decrease speed of weight by velocity measurement mechanisms, when the weight decrease speed reaches certain value, reducing gear begins to push pilot tape to increase the resistance that weight descends, making weight become gradually to slow down from quickening to descend descends, the weight decrease speed is effectively controlled, the weight decrease speed can be not too fast, and the present invention is suitable for high-rise building life saving when dangerous situation takes place, and can prevent people's excessive velocities and fatal when landing.And the present invention is simple in structure, compact, and it is little to take up space, and exempts from during use to install; The several means use of can connecting quantitatively can be preset the user of service, is not subjected to any restriction; Automatically regulate at decline process medium velocity, expanded user of service's scope.

Description of drawings

Fig. 1 is a structural representation of the present invention; Fig. 2 is the structural representation enlarged drawing of part 5 among Fig. 1; Fig. 3 is the B-B profile of Fig. 2; Fig. 4 is the structural representation enlarged drawing of part 13; Fig. 5 is the structural representation enlarged drawing of part 3 among Fig. 1; Fig. 6 is the A-A profile of Fig. 1.

Among the figure: 1, pilot tape, 2, shell, 3, main gear down device, 4, supplementary speed reduction means, 5, velocity measurement mechanisms, 6, slotted hole is installed, 7, suspension strap, 8, support bar, 9, bearing I, 10, friction housing, 11, support housing, 12, bearing I I, 13, centrifugal velometer, 14, probe hole, 15, measure speed gears, 16, bearing I II, 17, probe, 18, housing tests the speed, 19, spring I, 20, base, 21, power transmission shaft, 22, bearing I V, 23, spring II, 24, decelerating casing, 25, reduction gearing, 26, pin, 27, bearing V.

The specific embodiment

A kind of as shown in Figure 1 specific embodiment, it comprises pilot tape 1, shell 2, main gear down device 3, supplementary speed reduction means 4, velocity measurement mechanisms 5 and suspension strap 7.Main gear down device 3, supplementary speed reduction means 4 and velocity measurement mechanisms 5 respectively have two covers, and main gear down device 3, supplementary speed reduction means 4 and velocity measurement mechanisms 5 all are arranged in the shell 2.

As shown in Figures 2 and 3, velocity measurement mechanisms 5 comprises support bar 8, bearing I 9, friction housing 10, support housing 11, bearing I I 12, centrifugal velometer 13, measure speed gears 15 and bearing I II 16, support housing 11 is enclosed within on the support bar 8, bearing I 9 is installed on the support bar 8 and is positioned at a side of support housing 11, bearing I I 12 is installed on the support bar 8 and is positioned at the opposite side of support housing 11, friction housing 10 is by bearing I 9, bearing I I 12 can be relative to being arranged on the support bar 8 that support bar 8 rotates with centrifugal velometer 13, bearing I 9 is supported in the end of friction housing 10, centrifugal velometer 13 is stuck between the inner headed face of the other end of the periphery of bearing I I 12 and friction housing 10, and measure speed gears 15 can be relative to being arranged on the support bar 8 that support bar 8 rotates by bearing I II 16.

As shown in Figure 4, centrifugal velometer 13 comprises probe 17, housing 18 tests the speed, spring I19 and base 20, base 20 is tubbiness, probe 17 comprises cylindrical head and the cylindrical bottom that fuses with head, the bottom radius of probe 17 is greater than the interior radius of circle of base 20, the bottom of probe 7 was connected by spring I 19 with the interior end of base 20, the housing 18 that tests the speed be an end be the uncovered other end be provided with probe 17 head can be by popping one's head in 17 intransitable hole, bottom, housing 18 opening ends that test the speed are enclosed within on the base 20, and probe 17 and spring I 19 are in the cavity of test the speed housing 18 and base 20 formation.As shown in Figures 2 and 3, three centrifugal velometers 13 that are evenly distributed between the bearing I I 12 of velocity measurement mechanisms 5 and the friction housing 10, the base 20 of centrifugal velometer 13 is against on the periphery of bearing I I 12, the housing 18 that tests the speed of centrifugal velometer 13 is stuck on the friction housing 10, the cylindrical of bearing I I 12 is tapered, under the extruding of support housing 11, make centrifugal velometer 13 being stuck between friction housing 10 and the bearing I I 12 tightly, on the friction housing 10 with the probe 17 of velocity measurement mechanisms 5 over against the position be provided with the hole that the head of probe 17 can pass through, one side of measure speed gears 15 is provided with and is enclosed within the outer flange of an end that friction housing 10 is equipped with centrifugal velometer 13, is evenly equipped with the probe hole 14 that the head of six probes 17 can pass through on the circumference of flange.

As shown in Figure 5, main gear down device 3 comprises power transmission shaft 21, bearing I V22, spring II 23, decelerating casing 24, reduction gearing 25 and pin 26, decelerating casing 24 can be relative to being arranged on the power transmission shaft 21 that power transmission shaft 21 rotates by two bearing I V22, spring II 23 is enclosed within power transmission shaft 21 and is positioned on the part of decelerating casing 24, the end of spring II 23 is fixed on the decelerating casing 24, the other end of spring II 23 is fixed on the power transmission shaft 21, and reduction gearing 25 is fixed on the power transmission shaft 21 by pin 26.Be provided with the friction teeth that tooth depth uprises in a circumferential direction gradually greater than the quarter turn face on the surface of decelerating casing 24.

As shown in Figure 6, supplementary speed reduction means comprises central shaft and the cylindrical shell that is fixed on the central shaft.

As Fig. 1 and shown in Figure 6, shell 2 is enclosed within on the pilot tape 1, shell 2 can move up and down along pilot tape 1, the both sides that are positioned at pilot tape 1 in shell 2 respectively are furnished with a cover main gear down device 3, supplementary speed reduction means 4 and velocity measurement mechanisms 5, main gear down device 3, supplementary speed reduction means 4 and velocity measurement mechanisms 5 all axially are horizontally disposed with in the shell 2, left side at pilot tape 1 is followed successively by left redundant deceleration device 4 from top to bottom, left side velocity measurement mechanisms 5 and left main gear down device 3, be followed successively by right main gear down device 3 from top to bottom on the right side of pilot tape 1, right velocity measurement mechanisms 5 and right redundant deceleration device 4, the central shaft of two velocity measurement mechanisms 5 is positioned at sustained height, the central shaft of left redundant deceleration device 4 and right main gear down device 3 is positioned at sustained height, the central shaft of left side main gear down device 3 and right redundant deceleration device 4 is positioned at sustained height, the power transmission shaft 21 of two main gear down devices 3 is located on the shell 2 by bearing V 27, the central shaft of two supplementary speed reduction means 4 is fixed on the shell 2, the support bar 8 of two velocity measurement mechanisms 5 is arranged in the installation slotted hole 6 on the shell 2, but make support bar 8 opposite shell 2 move horizontally certain distance, the end of two velocity measurement mechanisms 5 is towards on the contrary, the end of two main gear down devices 3 is towards on the contrary, suspension strap 7 has two, article one, suspension strap 7 is suspended on the front end of support bar 8 of two velocity measurement mechanisms 5, and another suspension strap 7 is suspended on support bar 8 rear ends of two velocity measurement mechanisms 5.After hanging weight on two suspension straps 7, under the effect of weight gravity, suspension strap 7 can spur 8 horizontal centrings of two support bars and move, make the friction housing 10 of two velocity measurement mechanisms 5 be squeezed in the both sides of pilot tape 1, because the effect of frictional force, when weight descended, friction housing 10 rolled along pilot tape 1.The measure speed gears 15 of right velocity measurement mechanisms 5 is meshed with the reduction gearing 25 of right main gear down device 3.The measure speed gears 15 of left side velocity measurement mechanisms 5 is meshed with the reduction gearing 25 of left main gear down device 3.When right main gear down device 3 spring II 23 when being in free state, between the decelerating casing 24 of right main gear down device 3 and the left redundant deceleration device 4 pilot tape 1 freely through gap is arranged, when spring II 23 owing to decelerating casing 24 and power transmission shaft 21 relatively rotate in the process of straining, the higher part of tooth depth is rotated to pilot tape 1 on the decelerating casing 24, gap between decelerating casing 24 and the left redundant deceleration device 4 diminishes gradually, decelerating casing 24 compresses pilot tape 1 gradually, promptly make the frictional resistance of right main gear down

device

3 and 4 pairs of pilot tapes 1 of left redundant deceleration device increase gradually, play decelerating effect.

When left main gear down device 3 spring II 23 when being in free state, the gap that has pilot tape 1 to pass through between the decelerating casing 24 of left side main gear down device 3 and the right redundant deceleration device 4, when spring II 23 strains owing to decelerating casing 24 and power transmission shaft 21 relatively rotate, the higher part of tooth depth is rotated to pilot tape 1 on the decelerating casing 24, gap between decelerating casing 24 and the right redundant deceleration device 4 diminishes gradually, decelerating casing 24 compresses pilot tape 1 gradually, promptly make the frictional resistance of left main gear down

device

3 and 4 pairs of pilot tapes 1 of right redundant deceleration device increase gradually, play decelerating effect.

Using method: the upper end of pilot tape 1 is fixed on eminence, weight is suspended on the suspension strap 7, under the gravity effect of weight, the friction housing 10 jam-packed pilot tapes 1 of two velocity measurement mechanisms 5 of suspension strap 7 pullings, weight is zero acceleration descending motion as initial velocity along pilot tape 1, friction housing 10 rolls downwards along pilot tape 1, centrifugal velometer 13 is followed friction housing 10 and is rotated, the rolling wire speed of friction housing 10 equals the speed that weight descends, at this moment, pilot tape 1 freely through gap is arranged between main gear down device 3 and the supplementary speed reduction means 4, do not produce frictional force between main gear down device 3 and supplementary speed reduction means 4 and the pilot tape 1, main gear down device 3 and supplementary speed reduction means 4 do not influence the decrease speed of weight, when the weight decrease speed reaches certain value, probe 17 moves and extend into outside under action of centrifugal force in the probe hole 14 of flange of measure speed gears 15, thereby driving measure speed gears 15 rotates, two measure speed gearses 15 drive corresponding reduction gearing 25 respectively and rotate, reduction gearing 25 drives power transmission shaft 21 and rotates, spring II 23 is tightened up, under the effect of spring II 23, decelerating casing 24 turns an angle, tooth depth on the part of decelerating casing 24 contiguous pilot tapes 1 uprises gradually, coefficient of friction between main gear down device 3 and the pilot tape 1 increases gradually, the frictional force that main gear down device 3 and supplementary speed reduction means 4 affact on the pilot tape 1 becomes big gradually, the acceleration that weight descends is decreased to gradually and becomes zero, weight reaches maximum falling speed at this moment, the acceleration that weight descends continues to reduce to become negative acceleration, weight begins to do the deceleration descending motion, when the decrease speed of weight reaches certain value, probe 17 withdrawals, measure speed gears 15 and friction housing 10 break away from, the 15 unpowered inputs of 5 pairs of measure speed gearses of velocity measurement mechanisms, under the effect of spring II 23, two reduction gearing 25 drive the elastic potential energy of corresponding measure speed gears 15 backward rotation retracting spring II 23 respectively, decelerating casing 24 is backward rotation also, the frictional force that main gear down device 3 and supplementary speed reduction means 4 affact on the pilot tape 1 diminishes gradually, the acceleration that weight descends is just changed by negative sense, when the weight decrease speed reaches certain value, centrifugal velometer 13 begins to rework, measure speed gears 15 drives main gear down device 3, repeats said process.

Therefore, weight is in the decline process, and its decrease speed is constantly to change, and the maximum of its decrease speed is certain, can not cause danger because of decrease speed is excessive.

Claims

1. lifesaving appliance, it is characterized in that: comprise pilot tape (1), shell (2), velocity measurement mechanisms and reducing gear, shell (2) is enclosed within on the pilot tape (1), velocity measurement mechanisms and reducing gear are arranged on the shell (2), velocity measurement mechanisms comprises measure speed gears (15) and the friction housing (10) that contacts with pilot tape (1) rolling, reducing gear is included in the rotation process and pilot tape (1) between the decelerating casing (24) that gradually changes of coefficient of friction and can drive the reduction gearing (25) that decelerating casing (24) rotates, measure speed gears (15) and reduction gearing (25) are meshed, friction housing (10) is provided with when friction housing (10) can connect friction housing (10) and measure speed gears (15) the centrifugal velometer (13) with drive measure speed gears (15) rotation when rotating speed reaches certain value, drive in decelerating casing (24) rotating process in reduction gearing (25), decelerating casing (24) is to become big direction gradually towards the coefficient of friction between decelerating casing (24) and pilot tape (1) to rotate, described velocity measurement mechanisms (5) comprises support bar (8), and described friction housing (10), centrifugal velometer (13) and measure speed gears (15), friction housing (10) is with measure speed gears (15) can be relative to being arranged on the support bar (8) that rotate support bar (8), centrifugal velometer (13) comprises probe (17), housing and spring I (19), probe (17) and spring I (19) are arranged in the housing, probe (17) is connected with housing by spring I (19), the housing of centrifugal velometer (13) fixes with friction housing (10), one side of measure speed gears (15) is provided with and is enclosed within the outer flange of an end that friction housing (10) is equipped with centrifugal velometer (13), flange is provided with probe hole (14) radially, spring I (19) is when being in free state, the head of probe (17) does not exceed the periphery of the housing that rubs, spring I (19) is when being stretched to certain-length, the head of probe (17) extend in the probe hole (14) on the flange, described reducing gear comprises main gear down device (3) and supplementary speed reduction means (4), main gear down device (3) comprises power transmission shaft (21), spring II (23), and described decelerating casing (24) and reduction gearing (25), decelerating casing (24) can be relative to being arranged on the power transmission shaft (21) that rotate power transmission shaft (21), spring II (23) is enclosed within on the power transmission shaft (21), the end of spring II (23) is fixed on the decelerating casing (24), the other end of spring II (23) is fixed on the power transmission shaft (21), reduction gearing (25) is fixed on the power transmission shaft (21), the surface of decelerating casing (24) is provided with the friction teeth that tooth depth uprises in a circumferential direction gradually, main gear down device (3) and supplementary speed reduction means (4) are in the both sides of pilot tape (1) respectively, supplementary speed reduction means (4) is fixed on the shell (2), the power transmission shaft of main gear down device (3) is rotating to be arranged on the shell (2), as spring II (23) when being in free state, the freely through gap of pilot tape (1) is arranged between decelerating casing (24) and the supplementary speed reduction means (4), when spring II (23) relatively rotates in the process of straining owing to decelerating casing (24) and power transmission shaft (21), the gap between decelerating casing (24) and the supplementary speed reduction means (4) diminishes gradually.

2. lifesaving appliance according to claim 1, it is characterized in that: described velocity measurement mechanisms (5) and reducing gear respectively have two, two velocity measurement mechanisms are in the both sides of pilot tape (1) respectively, a reducing gear is in the top of two velocity measurement mechanisms (5), another reducing gear is in the below of two velocity measurement mechanisms (5), the corresponding one by one engagement of the measure speed gears (15) of two groups of velocity measurement mechanisms (5) and reducing gear and reduction gearing (25).

3. lifesaving appliance according to claim 2, it is characterized in that: include the suspension strap (7) that is used to hang weight, the support bar (8) of velocity measurement mechanisms (5) is arranged on the shell (2), support bar (8) opposite shell (2) has the activity surplus on the horizontal direction, and suspension strap (7) is suspended on the support bar (8) of two velocity measurement mechanisms.

4. lifesaving appliance according to claim 1, it is characterized in that: the housing of described centrifugal velometer (13) comprises housing that tests the speed (18) and base (20), base (20) is tubbiness, probe (17) comprises cylindrical head and the cylindrical bottom that fuses with head, the bottom radius of probe (17) is greater than the interior radius of circle of base (20), the bottom of probe (17) was connected by spring I (19) with the interior end of base (20), the housing (18) that tests the speed be an end be the uncovered other end be provided with the head of probe (17) can be by the intransitable hole, bottom of pop one's head in (17), housing (18) opening end that tests the speed is enclosed within on the base (20), and probe (17) and spring I (19) are in the cavity of housing that tests the speed (18) and base (20) formation.

5. lifesaving appliance according to claim 4 is characterized in that: described support bar (8) is provided with the bearing I I that cylindrical is taper (12), and the housing of centrifugal velometer (13) is stuck between bearing I I (12) and the friction housing (10).

6. lifesaving appliance according to claim 5, it is characterized in that: described each velocity measurement mechanisms (5) includes the centrifugal velometer (13) of three circumference uniform distributions between bearing I I (12) and friction housing (10), is evenly distributed in six probe holes (14) on the flange of measure speed gears (15).