阅读说明：本技术 一种建筑施工爮架安全防坠落装置 (Frame safety anti-falling device for building construction ) 是由 曹宗胜 辛建峰 胡宏青 刘春燕 康学东 张宇国 梁月新 王新胜 于 2021-07-12 设计创作，主要内容包括：本发明属于升降架防坠技术领域,且公开了一种建筑施工爮架安全防坠落装置,包括附墙支座和固定连接于附墙支座前端的固定架,所述附墙支座固定安装于大楼墙体,所述固定架上固定安装有固定杆且固定杆端部和中部分别活动套设有转动支架和转动卡座。本发明通过第二齿盘的卡牙即已经转动至第二齿盘的下一卡合位置,所以第二齿盘暂时失去来自第二齿盘的压力,故而会因为第一弹簧的弹力而重新与第二齿盘卡合,且在升降架上升的过程中,该过程会循环往复,不会阻止升降架的提升,且在逆齿旋转时,由于第二齿盘和第二齿盘卡牙的紧密卡合,从而带动转动卡座整体旋转从而驱动后面的部件,保证了可靠性。(The invention belongs to the technical field of falling prevention of cranes, and discloses a safety falling prevention device for a frame in building construction, which comprises a wall-attached support and a fixed frame fixedly connected to the front end of the wall-attached support, wherein the wall-attached support is fixedly arranged on a wall of a building, a fixed rod is fixedly arranged on the fixed frame, and a rotating support and a rotating clamping seat are respectively and movably sleeved at the end part and the middle part of the fixed rod. According to the invention, the clamping teeth of the second fluted disc rotate to the next clamping position of the second fluted disc, so that the second fluted disc loses pressure from the second fluted disc temporarily, and is clamped with the second fluted disc again due to the elastic force of the first spring, and in the lifting process of the lifting frame, the process can be repeated circularly, the lifting frame cannot be prevented from lifting, and in the process of contra-tooth rotation, the second fluted disc and the clamping teeth of the second fluted disc are tightly clamped, so that the rotating clamping seat is driven to rotate integrally to drive the following part, and the reliability is ensured.)

1. The utility model provides a construction is a safe anti-falling device of frame, includes attaches wall support (1) and fixed connection in mount (2) that attach wall support (1) front end, attach wall support (1) fixed mounting in building wall body, its characterized in that: the fixing frame (2) is fixedly provided with a fixing rod (3), the end part and the middle part of the fixing rod (3) are respectively and movably sleeved with a rotating support (4) and a rotating clamping seat (5), a first fluted disc (43) at the inner side of the rotating support (4) is movably clamped with a second fluted disc (52) at the end part of the rotating clamping seat (5), the surface of the rotating clamping seat (5) is further sleeved with a first spring (6), the first spring (6) is respectively and elastically supported between the fixing frame (2) and a limiting ring (53) arranged on the surface of the rotating clamping seat (5), the right end of the rotating clamping seat (5) is fixedly sleeved with a gear (7), the gear (7) is meshed and connected with two toothed bars (8) sleeved on the fixing frame (2), and the two toothed bars (8) are in transmission connection with a buffer system consisting of a first oil cylinder (9), a second oil cylinder (10), a third oil cylinder (11), an oil guide pipe (12) and a one-way valve (13), the outer end of a piston rod of the third oil cylinder (11) is in transmission connection with a clamping shaft (14) movably mounted on the wall-attached support (1) through a push rod (15), and the clamping shaft (14) can clamp a clamping block (105) arranged on the second oil cylinder (10) when rotating clockwise.

2. A construction safety anti-falling device according to claim 1, wherein: second hydro-cylinder (10) include second cavity (101), piston (102) and carriage release lever (103), piston (102) activity is cup jointed in the surface of carriage release lever (103), the surface cover of carriage release lever (103) is equipped with third spring (104), the both ends of third spring (104) respectively with the inner chamber wall and piston (102) elastic contact of second cavity (101), fixture block (105) fixed mounting is in the outer end of carriage release lever (103), the tip of carriage release lever (103) and rack bar (8) fixed connection who is located gear (7) top.

3. A construction safety anti-falling device according to claim 1, wherein: first hydro-cylinder (9) include first cavity (91), second spring (92) and piston rod (93), second spring (92) elastic support in the inner chamber wall of first cavity (91) and be located between the piston of piston rod (93) inner, first cavity (91) communicate through the inner chamber of leading oil pipe (12) with second cavity (101), first cavity (91) can communicate through the inner chamber of check valve (13) with third hydro-cylinder (11), the outer end of piston rod (93) and rack bar (8) fixed connection who is located gear (7) below.

4. A construction safety anti-falling device according to claim 1, wherein: the clamp shaft (14) comprises a shaft body (141), a stop block (142) and an ejector block (143) are respectively arranged on the surface of the shaft body (141), the ejector block (143) is in contact with the end portion of the push rod (15), and the clamp shaft (14) can rotate around the connecting portion of the clamp shaft and the wall-attached support (1).

5. A construction safety anti-falling device according to claim 4, wherein: the included angle between the stop block (142) and the top block (143) at the position of the outer peripheral surface of the shaft body (141) is one hundred thirty five degrees, the top block (143) of the clamp shaft (14) is in a vertical downward state in a natural state, and the included angle between the stop block (142) and a vertical line is forty five degrees.

6. A construction safety anti-falling device according to claim 1, wherein: the rotating support (4) comprises a rotating wheel (41), clamping feet (42) are arranged on the outer peripheral surface of the rotating wheel (41) in an equal-angle distribution mode, a first fluted disc (43) is arranged on the inner side surface of the rotating wheel (41), and the clamping feet (42) can extend to the position between the cross bars of the guide rails through rotation.

7. A construction safety anti-falling device according to claim 1, wherein: the rotating clamping seat (5) comprises a shaft sleeve (51), the second fluted disc (52) is arranged at the left end of the shaft sleeve (51), the limiting ring (53) is fixedly welded on the surface of the shaft sleeve (51), and the right end of the shaft sleeve (51) is fixedly connected with the gear (7).

8. A construction safety anti-falling device according to claim 6, wherein: the tooth of first fluted disc (43) twists reverse direction with the tooth of second fluted disc (52) twists reverse direction, when taking place between first fluted disc (43) and the second fluted disc (52) with the tooth and rotate, second fluted disc (52) receive the pressure of first fluted disc (43) and stagger and retreat and compress first spring (6), stagger to the next tooth of second fluted disc (52) the tooth of first fluted disc (43) after, the pressure that receives from first fluted disc (43) that second fluted disc (52) disappears and takes place to kick-back and with first fluted disc (43) re-block through first spring (6).

9. A construction safety anti-falling device according to claim 6, wherein: when the first fluted disc (43) and the second fluted disc (52) rotate reversely, the second fluted disc (52) synchronously rotates along with the first fluted disc (43) and drives the gear (7) to synchronously rotate.

10. A construction safety anti-falling device according to claim 3, wherein: the inner diameter of the first cavity (91) is larger than that of the second cavity (101), and the direction of the one-way valve (13) which can be conducted is only from the first oil cylinder (9) to the third oil cylinder (11).

Technical Field

The invention belongs to the technical field of anti-falling of lifting frames, and particularly relates to a safety anti-falling device for a lifting frame in building construction.

Background

The lifting frame for installing the outer curtain wall of a building, also called a lifting frame, can be divided into a plurality of main types such as hydraulic type, electromotive force, manual pulling type and the like according to the power source of the lifting frame, is a newly developed scaffold system in recent years, is mainly used for a building on a high-rise shear wall and plays an important role in installing the curtain wall outside the building.

When the lifting frame is lifted, because power sources such as an electric hoist and the like bear large working load, in order to avoid the falling of the lifting frame caused by the failure of the power sources or the breakage of a steel cable, corresponding anti-falling measures are generally needed to be arranged to avoid the falling of the lifting frame caused by accidents, the existing anti-falling measures generally utilize a swing pin type anti-falling system, and the system is simple in design and more in use, but the anti-falling system does not have buffering capacity, so that the functions of the anti-falling system are limited, potential safety hazards caused by the anti-falling system are more, and therefore the anti-falling system is redesigned for the swing pin type anti-falling top support, so that the new anti-falling system has the buffering capacity and other auxiliary functions which are not possessed by the existing swing pin type anti-falling system, and the functionality and the safety of the existing anti-falling system are improved.

Disclosure of Invention

The invention aims to provide a frame safety anti-falling device for building construction, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: a safety anti-falling device for a building construction comprises a wall-attached support and a fixed frame fixedly connected to the front end of the wall-attached support, wherein the wall-attached support is fixedly installed on a wall of a building, a fixed rod is fixedly installed on the fixed frame, the end part and the middle part of the fixed rod are respectively and movably sleeved with a rotating support and a rotating clamping seat, a second fluted disc at the inner side of the rotating support is movably clamped with a second fluted disc at the end part of the rotating clamping seat, the surface of the rotating clamping seat is further sleeved with a first spring, the first spring is respectively and elastically supported between the fixed frame and a limiting ring arranged on the surface of the rotating clamping seat, the right end of the rotating clamping seat is fixedly sleeved with a gear, the gear is meshed with two toothed bars sleeved on the fixed frame, the two toothed bars are in transmission connection with a buffer system composed of a first oil cylinder, a second oil cylinder, a third oil cylinder, an oil guide pipe and a one-way valve, the outer end of a piston rod of the third oil cylinder is in transmission connection with a clamping shaft movably installed on the wall-attached support through a push rod, and when the clamping shaft rotates clockwise, the clamping block arranged on the second oil cylinder can be clamped.

Preferably, the second hydro-cylinder includes second cavity, piston and carriage release lever, the piston activity cup joints in the surface of carriage release lever, the surface cover of carriage release lever is equipped with the third spring, the both ends of third spring respectively with the inner chamber wall and the piston elastic contact of second cavity, fixture block fixed mounting is in the outer end of carriage release lever, and the fixture block can be along with the synchronous motion of ratch, thereby when gear revolve drives the ratch action, the fixture block just synchronous motion thereupon, the tip of carriage release lever and the ratch fixed connection who is located the gear top.

Preferably, the first oil cylinder comprises a first cavity, a second spring and a piston rod, the second spring is elastically supported between the inner cavity wall of the first cavity and the piston located at the inner end of the piston rod, the first cavity is communicated with the inner cavity of the second cavity through an oil guide pipe, the first cavity can be communicated with the inner cavity of the third oil cylinder through a one-way valve, when the pressure borne in the inner cavity of the first cavity is too large, the one-way valve is pressed to conduct oil to the inner cavity of the third oil cylinder until the piston rod of the third oil cylinder and the push rod push the clamping shaft to rotate, and the outer end of the piston rod is fixedly connected with the toothed bar located below the gear.

Preferably, the clamping shaft comprises a shaft body, a stop block and an ejector block are respectively arranged on the surface of the shaft body, the ejector block is in contact with the end portion of the push rod, the clamping shaft can rotate around a connecting portion of the clamping shaft and the wall-attached support, and when the stop block is vertically upwards due to rotation of the clamping shaft, the stop block can block the clamping block which moves transversely.

Preferably, the contained angle of dog and kicking block in the position of axis body outer peripheral face is one hundred thirty-five degrees, card axle its kicking block is vertical decurrent state and the contained angle between dog and the vertical plumb line is forty-five degrees under natural state, thereby as shown in the figure, thereby it rotates to drive the card axle to receive the push rod top to move as the kicking block, when contained angle between kicking block and the vertical plumb line reaches forty-five degrees, so the dog can present vertical state.

Preferably, the rotating support comprises a rotating wheel, clamping feet are arranged on the outer peripheral surface of the rotating wheel in an equiangular distribution manner, the second gear disc is arranged on the inner side surface of the rotating wheel, the clamping feet can extend to positions between the cross rods of the guide rail through rotation, when the guide rail moves upwards, the cross rods in the middle of the guide rail can support the clamping feet to enable the clamping feet to drive the whole rotating support to rotate together, the second gear disc can rotate along with the second gear disc, when the guide rail moves downwards, the clamping feet can be pressed by the cross rods in the middle of the guide rail to enable the second gear disc to drive the second gear disc to rotate in a contra-tooth mode, and therefore the second gear disc can rotate synchronously due to the fact that clamping is achieved between the second gear disc.

Preferably, the rotating clamping seat comprises a shaft sleeve, the second gear disc is arranged at the left end of the shaft sleeve, the limiting ring is fixedly welded on the surface of the shaft sleeve, the right end of the shaft sleeve is fixedly connected with the gear, and the shaft sleeve body is a hollow sleeve which is sleeved on the surface of the fixed rod and can rotate relative to the fixed rod.

Preferably, the tooth twisting direction of the first tooth disc is opposite to the tooth twisting direction of the second tooth disc, when the first tooth disc and the second tooth disc rotate clockwise, the second tooth disc is staggered and retreated under the pressure of the teeth of the first tooth disc and compresses the first spring, after the teeth of the first tooth disc are staggered to the next teeth of the second tooth disc, the pressure applied to the second tooth disc from the first tooth disc disappears, the second tooth disc rebounds through the first spring and is re-engaged with the second tooth disc, that is, when the clockwise rotation occurs between the first tooth disc and the second tooth disc, the second tooth disc cannot rotate, the second tooth disc can generate a retreating effect due to the pressure when the second tooth disc is staggered with the first tooth disc, the limit ring compresses against the first spring when retreating, and when the first tooth disc and the second tooth disc are completely staggered, the teeth of the first tooth disc already rotate to the next engaging position of the second tooth disc, the second toothed disc temporarily loses the pressure from the first toothed disc and is engaged with the first toothed disc again due to the elastic force of the first spring, and if the clockwise rotation action is always present, the above working processes are consistent.

Preferably, when the contrary tooth rotates between first fluted disc and the second fluted disc, the second fluted disc rotates and drives the gear synchronous rotation along with first fluted disc synchronous rotation, and when the guide rail was descending, the card foot can be pushed down to the horizontal pole in the middle of the guide rail, leads to discovering between first fluted disc and the second fluted disc contrary tooth rotation, and the axle sleeve drives the gear afterwards and takes place synchronous rotation, and instantaneous rotation rate receives the instantaneous impact force decision of guide rail.

Preferably, the inner diameter of the first cavity is larger than that of the second cavity, and the direction in which the check valve can be conducted is only from the first cylinder to the third cylinder, that is, the two rack bars drive the piston and the piston rod to move at the same speed, so that the displacement of the first cylinder and the piston of the second cylinder in unit time are the same under the normal driving of the rack bars, but the movement directions of the pistons of the first cylinder and the second cylinder are opposite, so that the degree of compression of the inner cavity of the first cavity is large, the size of the inner cavity supplied by the retreat of the piston of the inner cavity of the second cylinder is small, so that the amount of hydraulic oil injected into the second cylinder from the first cavity through the oil guide pipe is large, and the position vacated in the second cylinder is not installed, so that the redundant hydraulic oil can push the piston to slide along the moving rod, thereby increasing the size of the inner cavity space of the second cavity.

The invention has the following beneficial effects:

1. the invention carries out the matching action between the rotating bracket and the rotating clamping seat, when the lifting frame ascends, the cross bar in the middle of the guide rail drives the rotating bracket to rotate clockwise, so the clockwise rotation is caused between the first fluted disc and the second fluted disc, the second fluted disc does not rotate, the second fluted disc can generate the backward effect due to the pressure when the second fluted disc is staggered with the first fluted disc, the limit ring can prop against the first spring to compress when retreating, and when the first fluted disc and the second fluted disc are completely staggered, the clamping teeth of the first fluted disc are already rotated to the next clamping position of the second fluted disc, so the second fluted disc temporarily loses the pressure from the first fluted disc, so the second fluted disc can be clamped with the first fluted disc again due to the elasticity of the first spring, in the lifting process of the lifting frame, the process can circularly reciprocate, the lifting frame can not prevent the lifting of the lifting frame, and in the process of the reverse rotation, the clamping teeth of the first fluted disc and the second fluted disc are tightly clamped, thereby drive and rotate the whole rotation of cassette and thus drive the part at the back, guaranteed the reliability.

2. The invention uses two rack bars to move synchronously, the first oil cylinder and the second oil cylinder can generate different working states because of different moving directions of the rack bars, the piston rod can compress the inner space of the first cavity firstly and overcome the elasticity of the second spring, the second spring absorbs the impact energy for the first time, then the hydraulic oil in the first cavity can be discharged into the inner cavity of the second oil cylinder along the oil guide pipe, the inner cavity diameter of the first cavity is larger than that of the second cavity, the hydraulic oil can push the piston to slide along the moving rod so as to improve the inner cavity space size of the second cavity, the piston sliding needs to overcome the resistance of the third spring, the third spring absorbs the impact energy for the second time, and the oil guide pipe is constant through the hydraulic oil flow in unit time, so the hydraulic oil can generate heat when being pressed and moved and transferred, thereby the impact energy can be absorbed for the third time, after impact energy is absorbed for three times, the lifting frame of the device can be instantly dropped to play a great buffering role, and the safety is further improved.

3. According to the invention, the check valve is arranged between the first oil cylinder and the third oil cylinder to serve as a one-way oil path, after an instant impact is applied, the oil pressure borne by the inner cavity wall of the first cavity is instantly increased, so that the check valve is conducted under pressure, and oil is fed into the inner cavity of the third oil cylinder, so that the piston rod of the third oil cylinder extends out to be matched with the push rod to push the clamping shaft to rotate, and the stop block can rotate to a vertical state after the clamping shaft rotates, so that the clamping block moving along with the rack rod is clamped to prevent the clamping block from continuously moving, and the check valve cannot be conducted reversely, so that a self-lock is formed, the clamping shaft is driven to keep the state of the clamping block, and the rotation of the rotating bracket is stopped.

Drawings

FIG. 1 is a schematic view of the overall assembly of the present invention;

FIG. 2 is an integrally assembled side view of the present invention;

FIG. 3 is a front view of the de-track of the present invention;

FIG. 4 is an exploded view of the pivoting bracket, first spring, gear and rack of the present invention;

FIG. 5 is a schematic view of the fixing frame of the present invention;

FIG. 6 is a schematic view of the internal structure of a second cylinder according to the present invention;

FIG. 7 is a schematic view of the internal structure of the first cylinder according to the present invention;

FIG. 8 is a schematic view of the rotating bracket of the present invention;

FIG. 9 is a schematic structural view of a rotary holder according to the present invention;

FIG. 10 is a schematic view of a chuck shaft according to the present invention.

In the figure: 1. a wall-attached support; 2. a fixed mount; 3. fixing the rod; 4. rotating the bracket; 41. a rotating wheel; 42. clamping a pin; 43. a first fluted disc; 5. rotating the clamping seat; 51. a shaft sleeve; 52. a second fluted disc; 53. a limiting ring; 6. a first spring; 7. a gear; 8. a rack bar; 9. a first cylinder; 91. a first cavity; 92. a second spring; 93. a piston rod; 10. a second cylinder; 101. a second cavity; 102. a piston; 103. a travel bar; 104. a third spring; 105. a clamping block; 11. a third oil cylinder; 12. an oil guide pipe; 13. a one-way valve; 14. clamping a shaft; 141. a shaft body; 142. a stopper; 143. a top block; 15. a push rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 10, in an embodiment of the present invention, a safety anti-falling device for a frame in building construction includes a wall-attached support 1 and a fixed frame 2 fixedly connected to a front end of the wall-attached support 1, the wall-attached support 1 is fixedly installed on a wall of a building, a fixed rod 3 is fixedly installed on the fixed frame 2, an end portion and a middle portion of the fixed rod 3 are respectively and movably sleeved with a rotating bracket 4 and a rotating clamping seat 5, a first fluted disc 43 inside the rotating bracket 4 is movably clamped with a second fluted disc 52 at an end portion of the rotating clamping seat 5, a first spring 6 is further sleeved on a surface of the rotating clamping seat 5, the first spring 6 is respectively and elastically supported between the fixed frame 2 and a limiting ring 53 arranged on a surface of the rotating clamping seat 5, a gear 7 is fixedly sleeved at a right end of the rotating clamping seat 5, the gear 7 is engaged with two toothed bars 8 sleeved on the fixed frame 2, and the two toothed bars 8 are connected with a first oil cylinder 9, a second oil cylinder 10, The third oil cylinder 11, the oil guide pipe 12 and the one-way valve 13 are in transmission connection, the outer end of a piston rod of the third oil cylinder 11 is in transmission connection with a clamping shaft 14 movably mounted on the wall-attached support 1 through a push rod 15, and the clamping shaft 14 can clamp a clamping block 105 arranged on the second oil cylinder 10 when rotating clockwise.

Wherein, the second hydro-cylinder 10 includes second cavity 101, piston 102 and movable rod 103, piston 102 activity cup joints in the surface of movable rod 103, the surface cover of movable rod 103 is equipped with third spring 104, the both ends of third spring 104 respectively with the inner chamber wall and the piston 102 elastic contact of second cavity 101, fixture block 105 fixed mounting is in the outer end of movable rod 103, fixture block 105 can be along with the synchronous motion of rack bar 8, thereby it is when thereby driving rack bar 8 action when gear 7 rotates, fixture block 105 is along with synchronous motion, the tip of movable rod 103 and the rack bar 8 fixed connection who is located the gear 7 top.

The first oil cylinder 9 comprises a first cavity 91, a second spring 92 and a piston rod 93, the second spring 92 is elastically supported between the inner cavity wall of the first cavity 91 and a piston located at the inner end of the piston rod 93, the first cavity 91 is communicated with the inner cavity of the second cavity 101 through an oil guide pipe 12, the first cavity 91 can be communicated with the inner cavity of the third oil cylinder 11 through a one-way valve 13, when the pressure born in the inner cavity of the first cavity 91 is too high, the one-way valve 13 is pressed to be communicated, so that oil is injected into the inner cavity of the third oil cylinder 11 until the piston rod of the third oil cylinder 11 and the push rod 15 push the clamping shaft 14 to rotate, and the outer end of the piston rod 93 is fixedly connected with the toothed bar 8 located below the gear 7.

The clamping shaft 14 comprises a shaft body 141, a stopper 142 and a top block 143 are respectively arranged on the surface of the shaft body 141, the top block 143 is in contact with the end portion of the push rod 15, the clamping shaft 14 can rotate around the connecting portion of the clamping shaft and the wall-attached support 1, and when the stopper 142 is vertically upwards due to the rotation of the clamping shaft, the stopper 142 can stop the clamping block 105 which moves transversely.

The included angle between the stopper 142 and the top block 143 at the outer peripheral surface of the shaft body 141 is one hundred thirty-five degrees, the top block 143 of the spindle 14 is in a vertical downward state in a natural state, and the included angle between the stopper 142 and a vertical line is forty-five degrees, as shown in fig. 10, when the top block 143 is pushed by the push rod 15, the spindle 14 is driven to rotate, and when the included angle between the top block 143 and the vertical line reaches forty-five degrees, the stopper 142 is in a vertical state.

Wherein, the rotating bracket 4 includes the runner 41, the equal angular distribution of the outer peripheral face of runner 41 is provided with the card foot 42, the medial surface of runner 41 is located to first fluted disc 43, card foot 42 can extend to between the horizontal pole of guide rail through rotating, the guide rail is when ascending, the horizontal pole in the middle of the guide rail can withstand card foot 42 and make it drive whole rotating bracket 4 and rotate together, and first fluted disc 43 can present the cis-tooth rotation with second fluted disc 52 between, and when the guide rail is descending, thereby the horizontal pole in the middle of the guide rail can push down card foot 42 and make first fluted disc 43 drive second fluted disc 52 and take place contrary tooth rotation, in second fluted disc 52 owing to present the block with first fluted disc 43 between, lead to second fluted disc 52 can synchronous rotation.

The rotating clamping seat 5 comprises a shaft sleeve 51, the second gear disc 52 is arranged at the left end of the shaft sleeve 51, the limiting ring 53 is fixedly welded on the surface of the shaft sleeve 51, the right end of the shaft sleeve 51 is fixedly connected with the gear 7, and the shaft sleeve 51 body is a hollow sleeve which is sleeved on the surface of the fixing rod 3 and can rotate relative to the fixing rod 3.

Wherein, the tooth twisting direction of the first tooth disc 43 is opposite to the tooth twisting direction of the second tooth disc 52, when the first tooth disc 43 and the second tooth disc 52 rotate clockwise, the second tooth disc 52 is staggered and retreated by the pressure of the teeth of the first tooth disc 43 and compresses the first spring 6, after the teeth of the first tooth disc 43 are staggered to the next teeth of the second tooth disc 52, the pressure from the first tooth disc 43 on the second tooth disc 52 disappears, and rebounds through the first spring 6 and re-engages with the first tooth disc 43, that is, when the clockwise rotation occurs between the first tooth disc 43 and the second tooth disc 52, the second tooth disc 52 will not rotate, and the second tooth disc 52 will generate the retreating effect due to the pressure when it is staggered to the first tooth disc 43, the limit ring 53 will push against the first spring 6 to compress when retreating, and when the first tooth disc 43 and the second tooth disc 52 are completely staggered, the tooth clamping tooth of the first tooth disc 43 will rotate to the next engaging position of the second tooth disc 52, the second toothed plate 52 loses the pressure from the first toothed plate 43 temporarily, and is engaged with the first toothed plate 43 again due to the elastic force of the first spring 6, and if the clockwise rotation action is always present, the above-mentioned operation process is consistent.

When the first fluted disc 43 and the second fluted disc 52 rotate in a reverse manner, the second fluted disc 52 rotates synchronously with the first fluted disc 43 and drives the gear 7 to rotate synchronously, when the guide rail moves downwards, the cross rod in the middle of the guide rail presses down the clamping foot 42 to cause the first fluted disc 43 and the second fluted disc 52 to rotate in a reverse manner, then the shaft sleeve 51 drives the gear 7 to rotate synchronously, and the instantaneous rotation speed is determined by the instantaneous impact force of the guide rail.

Wherein, the inner diameter of the first cavity 91 is larger than the inner diameter of the second cavity 101, the direction of the one-way valve 13 that can be conducted is only from the first cylinder 9 to the third cylinder 11, that is, the two rack bars 8 drive the piston 102 and the piston rod 93 to move at the same speed, so that the displacement of the first cylinder 9 and the second cylinder 10 in unit time is the same under the normal driving of the rack bars 8, but because the piston motion directions of the first cylinder 9 and the second cylinder 10 are opposite, the inner cavity of the first cavity 91 is compressed to a large extent, while the size of the chamber supplied by the retraction of the piston 102 by the chamber of the second cylinder 10 is smaller, the amount of hydraulic oil injected from the first chamber 91 into the second cylinder 10 through the oil introduction pipe 12 is large, the vacated position in the second oil cylinder 10 cannot be installed, so that the redundant hydraulic oil can push the piston 102 to slide along the moving rod 103, thereby increasing the size of the inner cavity space of the second cavity 101.

The working principle and the using process are as follows:

the device is fixedly arranged on a wall body outside a building, the clamping feet 42 are arranged to extend to the position between the cross rods of the guide rails, when the lifting frame is in normal operation, when the lifting frame is lifted, the cross rods of the guide rails can prop against the clamping feet 42 to drive the whole rotating support 4 to rotate together, the first fluted disc 43 and the second fluted disc 52 rotate along with teeth, when the first fluted disc 43 and the second fluted disc 52 rotate along with teeth, the second fluted disc 52 cannot rotate, the second fluted disc 52 generates a backward moving effect due to the pressure generated when the second fluted disc is staggered with the first fluted disc 43, the limit ring 53 props against the first spring 6 to compress when retreating, and when the first fluted disc 43 and the second fluted disc 52 are completely staggered, the clamping teeth of the first fluted disc 43 rotate to the next clamping position of the second fluted disc 52, so that the second fluted disc 52 temporarily loses the pressure from the first fluted disc 43, therefore, the first gear disc 43 is clamped again by the elastic force of the first spring 6, and the process is always existed in the process that the lifting frame ascends;

when the lifting frame suddenly falls, the cross rod impacts the first toothed disc 43 and the second toothed disc 52 to rotate in a reverse tooth manner, so that the second toothed disc 52 drives the rotating clamping seat 5 and the gear 7 to rotate, the gear 7 drives the two toothed bars 8 to synchronously move when rotating, the first oil cylinder 9 and the second oil cylinder 10 generate different working states due to different moving directions of the toothed bars 8, the piston rod 93 firstly compresses the inner space of the first cavity 91 and overcomes the elastic force of the second spring 92, the impact force is firstly reduced by the second spring 92, however, the impact force is too large, and the hydraulic oil in the first cavity 91 can be discharged into the inner cavity of the second oil cylinder 10 along the oil guide pipe 12, and because the diameter of the inner cavity of the first cavity 91 is larger than that of the second cavity 101, the hydraulic oil from the first oil cylinder 9 cannot be loaded at the vacated position in the second oil cylinder 10, the redundant hydraulic oil can push the piston 102 to slide along the moving rod 103, so as to increase the size of the inner cavity space of the second cavity 101, the sliding of the piston 102 needs to overcome the resistance of the third spring 104, the third spring 104 further absorbs the impact energy, and the flow rate of the hydraulic oil passing through the oil conduit 12 is constant in unit time, so that the hydraulic oil is heated when being pressed and moved and transferred, and the impact energy is further absorbed;

the hydraulic oil in the first cavity 91 can not be discharged instantly, so that the pressure borne by the inner cavity wall of the first cavity 91 is increased instantly, the one-way valve 13 is conducted under pressure, and then the oil is fed into the inner cavity of the third oil cylinder 11, so that the piston rod of the third oil cylinder 11 extends out of the matching push rod 15 to push the clamping shaft 14 to rotate, the clamping shaft 14 can rotate the stopper 142 to be in a vertical state after rotating, the clamping block 105 moving along with the toothed rod 8 is clamped, the gear 7 is prevented from continuously moving, the gear 7 is locked, the rotating support 4 and the rotating clamping seat 5 are locked and cannot rotate, and the lifting frame cannot fall down.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.