CN110745728B

CN110745728B - Building material lifting device with anti-falling function

Info

Publication number: CN110745728B
Application number: CN201911055119.8A
Authority: CN
Inventors: 江丽丽; 张玉林
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-12-01
Anticipated expiration: 2039-10-31
Also published as: CN110745728A

Abstract

The invention relates to the field of building construction, in particular to a building material lifting device with an anti-falling function, which comprises a rope roller, wherein a pull rope is wound on the rope roller, a fixed cylinder is sleeved on the outer side of the rope roller, a plurality of clamping grooves distributed circumferentially are formed in the inner wall of the fixed cylinder, a swing rod is rotatably connected on the rope roller, a clamping block is fixedly connected at the end part of the swing rod, and an elastic part for pushing the clamping block into the clamping grooves is connected between the swing rod and the rope roller; the rope roller is connected with a rope fastening connected with the clamping block, the rope roller is connected with a cutter in a sliding mode in the radial direction of the rope roller, the blade portion of the cutter faces the rope fastening, and the cutter is located between the axis of the rope roller and the rope fastening. The hopper falls to subaerial when this scheme avoids appearing proruption situation.

Description

Building material lifting device with anti-falling function

Technical Field

The invention relates to the field of building construction, in particular to a building material lifting device with an anti-falling function.

Background

At present, building materials (such as sand, concrete and the like) on the ground need to be conveyed to a higher floor by a building material lifting device due to the higher building height of the floor. The existing building material lifting device comprises a lifting motor, a rope roller and a fixed pulley, wherein the lifting motor is coaxially and fixedly connected with the rope roller, a pull rope is wound on the rope roller and spans across the fixed pulley, and one end, far away from the rope roller, of the pull rope is connected with a hopper. Drive the rope roller through the hoist motor and rotate, the rope roller twines the stay cord, and the stay cord shortens gradually, and the stay cord upwards promotes the hopper to realized building material's automation and upwards promoted, need not artifical the promotion, it is more laborsaving, the operation is comparatively simple.

However, the lifting motor is usually located at high altitude, the environment is severe, if the lifting motor is powered off in the lifting process of the hopper, the hopper can rapidly drop to the ground downwards under the action of gravity, so that great potential safety hazards exist for people on the ground, and the design of the building material lifting device with the anti-falling function is very useful.

Disclosure of Invention

The invention aims to provide a building material lifting device with an anti-falling function, so as to prevent a hopper from falling onto the ground in an emergency.

In order to achieve the purpose, the technical scheme of the invention is as follows: the building material lifting device with the anti-falling function comprises a rope roller, a pull rope is wound on the rope roller, a fixed cylinder is sleeved on the outer side of the rope roller, a plurality of clamping grooves which are distributed circumferentially are formed in the inner wall of the fixed cylinder, a swing rod is rotatably connected to the rope roller, a clamping block is fixedly connected to the end portion of the swing rod, and an elastic part used for pushing the clamping block into the clamping grooves is connected between the swing rod and the rope roller; the rope roller is connected with a rope fastening connected with the clamping block, the rope roller is connected with a cutter in a sliding mode in the radial direction of the rope roller, the blade portion of the cutter faces the rope fastening, and the cutter is located between the axis of the rope roller and the rope fastening.

When the technical scheme is adopted, the tying rope is used for tying the clamping block, and the situation that the swinging rod pushes the clamping block towards the fixed cylinder under the action of the elastic piece is avoided. When the unexpected condition appeared, the hopper tenesmus to the hopper is under acceleration of gravity's effect, and the tenesmus speed of hopper can be bigger and bigger, and the hopper passes through the quick rotation of stay cord drive rope roller, and the rope roller is under the pulling of stay cord, and the rotational speed of rope roller can be faster and faster. When the rope roller rotates, the cutter on the rope roller can slide towards the direction close to the rope fastening under the action of centrifugal force, after the rotating speed of the rope roller reaches a certain degree, the blade part of the cutter can be abutted against the rope fastening, so that the rope fastening is cut off, the rope fastening is not used for fixing the clamping block, the oscillating bar rotates under the elastic action of the elastic part, the oscillating bar drives the clamping block to swing towards the direction close to the inner wall of the fixed cylinder, the clamping block is attached to the inner wall of the fixed cylinder, and the clamping block moves relatively on the inner wall of the fixed cylinder along with the rotation of the rope roller. Along with the fixture block moves on the inner wall of the fixed cylinder, when the fixture block is opposite to the clamping groove, the fixture block is clamped into the clamping groove under the action of the elastic piece, so that the rope roller is clamped and cannot continue to rotate, and the hopper is prevented from dropping.

Through this scheme, the hopper drops subaerially when can avoiding the emergence accident condition, has improved building material hoisting device's security, has guaranteed the safety of construction.

Furthermore, the elastic part is a torsion spring which is positioned on the part of the swing rod which is rotatably connected with the rope roller. Therefore, when the rope is tied to pull the clamping block, the torsion spring is in a force accumulation state, and after the rope is cut off by the cutter, the swing rod can rotate under the action of the elasticity of the torsion spring, so that the clamping block moves towards the direction close to the inner wall of the fixed cylinder. In the scheme, the elastic part is selected as the torsion spring, and the torsion spring is installed on the position of the swing rod in a rotating connection mode with the rope roller, so that the structure is more compact and reasonable.

Furthermore, a cutting table is fixedly connected to the rope roller, and the tether is located between the cutting table and the cutter. When the cutter cuts the tether, the cutting table can provide certain support for the cutter to cut off the tether, and the cutter is more favorable for cutting off the tether.

Further, a strip-shaped groove is formed in the rope roller, the cutter is located in the strip-shaped groove, and a tension spring is connected between the end portion, far away from the tether, of the cutter and the end portion of the strip-shaped groove. From this, when the rotational speed of rope roller is less, the extension spring can be withheld the cutter to avoid the cutter to slide to the direction of being close to the rope fastening, only like this when the hopper drives the high-speed rotation of rope roller under the unexpected circumstances, the centrifugal force of cutter is greater than the pulling force of extension spring, the cutter just removes to being close to the rope fastening direction and will fasten the rope and cut off, and then the cutter will fasten the rope and cut off under the effect of centrifugal force when having avoided the rope roller rotational speed less, the cutter will fasten the rope and cut off when having avoided the rope roller to normally work.

Furthermore, one end of the pull rope, which is far away from the rope roller, is connected with a hopper. The hopper is used for containing materials.

The hopper is fixedly connected with a plurality of stop blocks vertically, the hopper is connected with a clamping unit, the clamping unit comprises a fixed disc and a rotating disc, the rotating disc is coaxially and rotatably connected to the fixed disc, the fixed disc is transversely and slidably connected with a baffle plate, the baffle plate is provided with a sliding groove, the fixed disc is provided with an arc-shaped sliding strip, the sliding strip is inserted into the sliding groove, one end of the sliding strip is close to the circle center of the rotating disc, and the other end of the sliding strip is far away from the circle center of the rotating disc; the clamping unit further comprises a cylindrical cam mechanism, the cylindrical cam mechanism comprises a cylinder and a drive plate, the drive plate is connected to the cylinder in a sliding mode along the axial direction of the cylinder, a first pressure spring is connected between the drive plate and the fixed disk, a clamping strip used for clamping the drive plate to the fixed disk is connected to the fixed disk in a sliding mode, a connecting rope is connected to the end portion of the clamping strip, and an air pocket bag is connected to the connecting rope. From this, this building material hoisting device normally during operation, the hopper normally descends between two risers. The clamping strip is used for clamping the driving plate on the fixing disc, and the driving plate is prevented from moving in the direction of being far away from the fixing disc under the action of the first pressure spring.

If the hopper is promoting the in-process, the stay cord breaks off, then the hopper can fall downwards under the effect of gravity, and hopper speed can be bigger and bigger under the acceleration of gravity, and hopper whereabouts in-process, hopper drive joint unit together downstream. In the downward moving process of the clamping unit, air moves upward relative to the clamping unit, the air bag holds air, the air bag blocks the air, and the air bag has a tendency of moving upward under the action of wind force. When the falling speed of joint unit reached a definite value, the pocket wind bag expanded under the effect of air, and the pocket wind bag has certain pulling force to connecting the rope, connects rope pulling card strip, and the card strip slides on the fixed disk, and the card strip breaks away from the drive plate, and the card strip no longer fixes the drive plate. Then the driving plate is far away from the fixed disc under the action of the first pressure spring, and the driving plate slides on the cylinder. Cylindrical cam mechanism has been constituteed to drive plate and cylinder in this scheme, when the drive plate slided on the cylinder, the drive plate drives the cylinder and rotates, the cylinder drives the rolling disc and rotates, draw runner on the rolling disc slides in the sliding tray, because the draw runner is curved, the one end of draw runner is close to the centre of a circle of rolling disc, the centre of a circle of rolling disc is kept away from to the other end of draw runner, so the draw runner drives the baffle and moves on the fixed disk, and the baffle removes to the central direction of keeping away from the fixed disk, the baffle stretches out on the edge of fixed disk, the baffle offsets with the dog on the riser, thereby make the hopper of tenesmus stop the downstream. Through this scheme, even if when the stay cord fracture appears, also can prevent the hopper tenesmus for the anti-falling effect of hopper is better. In addition, when the clamping unit falls, the air bag can buffer the falling of the hopper under the action of air, so that the hopper can stably fall, and the hopper is prevented from being overturned and inclined to pour out materials in the falling process; and the hopper can not take place the slope under the effect of pocket wind bag, and joint unit can not take place the slope like this yet, has guaranteed that the baffle on the joint unit can be comparatively stable counterbalance with the dog on the riser.

Furthermore, the clamping unit further comprises a supporting block, a second pressure spring is connected between the supporting block and the end part of the clamping strip, a rotating wheel is connected to the supporting block in a rotating mode, and the connecting rope spans over the rotating wheel. From this, the second pressure spring is used for exerting pressure to the card strip for the card strip can be with the drive plate card, avoids hopper whereabouts in-process card strip free opening. When the pocket wind bag received the resistance of air, the pocket wind bag was spurred the connection rope, and the runner can make the both ends of connecting the rope no longer on the same straight line on the one hand, has realized the buckling of connecting the rope, and on the other hand can be so that the removal of connecting the rope more smooth and easy.

Furthermore, the fixed disc is also provided with an air guide cover, the air bag is positioned above the air guide cover, the top of the air guide cover is provided with an air hole, and the connecting rope penetrates through the air hole. Therefore, the air guide cover plays a role in guiding and gathering air, so that when the clamping unit moves downwards, the air moves towards the direction of the air bag more easily under the action of the air guide cover, and the air bag is blown. The air holes facilitate the air entering the air guide cover to enter the air bag.

Furthermore, the edge of the air pocket bag is bonded on the air guide cover. From this, when the hopper normally falls, the falling speed of hopper is slower, and the speed of the air that enters into in the wind scooper is less, can not blow the pocket wind bag, and the pocket wind bag bonds on the wind scooper, and the more standard of placing of pocket wind bag. When an emergency occurs, the falling speed of the hopper is high, the bonding force of the air bag bonded on the air guide cover is smaller than the wind power, and the air guide cover can be separated from the air guide cover and automatically unfolded.

Furthermore, the bottom of the wind scooper is positioned on the outer side of the edge of the fixed disk. Therefore, the air guide cover is more favorable for the outside air to enter into the air guide cover.

Drawings

FIG. 1 is a partial front sectional view of a construction material lifting device having a falling prevention function in embodiment 1;

FIG. 2 is an enlarged view of A in FIG. 1;

FIG. 3 is a top view of the rope roll;

FIG. 4 is a partial front sectional view of the construction material lifting device having the falling prevention function in embodiment 2;

FIG. 5 is a front cross-sectional view of the clamping unit;

FIG. 6 is a front cross-sectional view of the latch unit with the air bag deployed;

fig. 7 is a bottom view of the rotary disk of fig. 4.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a fixed pulley 1, a pull rope 2, a hopper 3, a fixed cylinder 4, a clamping groove 5, a rope roller 6, a swing rod 7, a clamping block 8, a cutting table 9, a rope fastening 10, a fixed point 11, a tension spring 12, a cutter 13, a clamping unit 14, a vertical plate 15, a stop 16, a cylinder 17, a driving plate 18, a baffle plate 19, a rotating disc 20, a fixed disc 21, a long hole 22, a first pressure spring 23, an air guide cover 24, an air hole 25, a sliding strip 26, a clamping strip 27, an air pocket 28, a rotating wheel 29, a connecting rope 30, a supporting block 31, a second pressure spring 32 and a groove 33.

Example 1

Substantially as shown in figure 1: building material hoisting device with prevent weighing down function, including being located the hoist motor and the rope roller 6 of building eminence, be connected with the reduction gear on the hoist motor, through the coaxial fixed connection of parallel key between output shaft on the reduction gear and the rope roller 6. The rope roller 6 is wound with a pull rope 2 made of steel wires, the outer side of the rope roller 6 is sleeved with a fixed cylinder 4, and the fixed cylinder 4 is fixed at the high position of a building through screws. The inner wall of the fixed cylinder 4 is provided with a plurality of circumferentially distributed slots 5, and the number of the slots 5 in the embodiment is preferably five. Be equipped with the rope hole on the lateral wall on the fixed cylinder 4, stay cord 2 can be worn out from the inside of fixed cylinder 4 through the rope hole. The outside of the fixed cylinder 4 is provided with a fixed pulley bracket fixed at a high position of a building through a screw, the fixed pulley bracket is rotatably connected with a fixed pulley 1 through a bearing, one end of the pull rope 2 far away from the fixed cylinder 4 strides over the fixed pulley 1 and is positioned below the fixed pulley 1, and the bottom end of the pull rope 2 is tied with a hopper 3. In order to ensure the lifting effect and improve the anti-falling effect, the number of the fixed cylinder 4, the rope roller 6 and the fixed pulley 1 in the embodiment is two, and other numbers can be set according to the actual situation.

The cord roller 6 in this embodiment includes a winding portion for winding the cord 2 and a non-winding portion for adhering to the inner wall of the fixed cylinder 4, and as shown in fig. 3, the winding portion is provided with a cord groove, and the non-winding portion of the cord roller 6 is provided with a groove 33. The swing rod 7 shown in fig. 2 is rotatably connected in the groove 33, specifically, the right end of the swing rod 7 is rotatably connected to the inner wall of the groove 33 through a pin shaft, an elastic member is sleeved on the pin shaft, the elastic member in this embodiment is a torsion spring, and two ends of the torsion spring are respectively welded to the inner wall of the groove 33 and the swing rod 7. The left end of the swing rod 7 is welded with a clamping block 8, the rope roller 6 is connected with a rope fastening 10 connected with the clamping block 8, specifically, a fixing point 11 located on the left side of the clamping block 8 is arranged on the inner wall of the groove 33 of the rope roller 6, the rope fastening 10 is fastened on the fixing point 11, and the right end of the rope fastening 10 is fastened on the clamping block 8. Be equipped with on the inner wall of the recess 33 of rope roller 6 along the radial direction sliding connection's of rope roller 6 cutter 13, specifically, be equipped with the bar groove on the rope roller 6, cutter 13 is arranged in the bar groove, and cutter 13 is kept away from and is connected with extension spring 12 between the tip of tying rope 10 and the tip in bar groove. The cutting blade 13 has a cutting edge portion at the tip end facing the tether 10, and the cutting blade 13 is located between the axis of the cord roller 6 and the tether 10. The inner wall of the groove 33 of the rope roller 6 is welded with a cutting platform 9, and the rope 10 is positioned between the cutting platform 9 and the cutter 13.

The specific implementation process is as follows: at ordinary times, the fixing point 11 and the clamping block 8 are tied together by the tying rope 10 through the tying rope 10, the swing rod 7 is fixed by the tying rope 10, the torsion spring is in a power storage state, the rotating speed of an output shaft of the speed reducer is slow, the tension of the tension spring 12 is larger than the centrifugal force generated by the rotation of the rope roller 6 to the cutter 13, and the cutter 13 cannot move towards the direction close to the tying rope 10 and is abutted against the tying rope 10 to cut off the tying rope 10. The lifting motor drives the left rope roller 6 to rotate anticlockwise, the lifting motor drives the right rope roller 6 to rotate clockwise, so that the pull rope 2 is wound on the rope roller 6, the length of the pull rope 2 is reduced, and the pull rope 2 lifts the hopper 3 upwards from the ground. At the in-process that lifting motor upwards carried hopper 3, when the unexpected condition appeared, if lifting motor cuts off the power supply suddenly, 3 power that upwards promoted of hopper disappears suddenly, hopper 3 can be at this moment the tenesmus under the effect of gravity to hopper 3 is under acceleration of gravity's effect, the tenesmus speed of hopper 3 can be bigger and bigger, hopper 3 drives the quick antiport of rope roller 6 through stay cord 2, rope roller 6 is under the pulling of stay cord 2, rope roller 6's rotational speed can be faster and faster. When the rope roller 6 rotates, the cutter 13 on the rope roller 6 slides towards the direction close to the rope fastening 10 under the action of centrifugal force, when the rotating speed of the rope roller 6 reaches a certain degree, the centrifugal force generated by the rotation of the rope roller 6 on the cutter 13 is larger than the tension of the tension spring 12, the cutter 13 overcomes the tension of the tension spring 12 under the action of the centrifugal force and moves towards the direction far away from the tension spring 12, the blade part of the cutter 13 abuts against the rope fastening 10, the blade part of the cutter 13 abuts against the cutting table 9, and the cutter 13 cuts off the rope fastening 10. Therefore, the rope 10 is not fixed to the clamping block 8 any more, the swing rod 7 rotates clockwise under the action of the elastic force of the torsion spring, the swing rod 7 drives the clamping block 8 to swing towards the direction close to the inner wall of the fixed cylinder 4, the clamping block 8 is attached to the inner wall of the fixed cylinder 4, and the clamping block 8 moves on the inner wall of the fixed cylinder 4 relatively along with the rotation of the rope roller 6. Along with the fixture block 8 moves on the inner wall of the fixed cylinder 4, when the fixture block 8 is opposite to the clamping groove 5, the fixture block 8 continues to swing towards the axis direction far away from the rope roller 6 under the action of the torsion spring, and the fixture block 8 is clamped into the clamping groove 5, so that the rope roller 6 is clamped by the fixed cylinder 4 and cannot continue to rotate, and the hopper 3 is prevented from dropping.

Example 2

As shown in fig. 4, the present embodiment further includes vertical plates 15 located on two sides of the hopper 3, the vertical plates 15 are buried in the ground, the buried depth is one meter, so as to prevent the vertical plates 15 from toppling over, and the vertical plates 15 are vertically welded with a plurality of stoppers 16. Be connected with joint unit 14 on hopper 3, combine shown in fig. 5, joint unit 14 includes fixed disk 21 and rolling disc 20, and rolling disc 20 coaxial rotation is connected on fixed disk 21, and is concrete, is equipped with the cavity on the fixed disk 21, and rolling disc 20 is arranged in the cavity, and the top of fixed disk 21 is equipped with the hole, is equipped with cylinder cam mechanism on the rolling disc 20, and cylinder cam mechanism includes cylinder 17 and drive plate 18, and cylinder 17 passes the hole, is connected through the bearing between cylinder 17 and the hole. The fixed disk 21 is transversely connected with a baffle plate 19 in a sliding manner, specifically, the bottom of the fixed disk 21 is provided with a long hole 22, the side surface of the baffle plate 19 is welded with a sliding block, and the sliding block is positioned in the long hole 22. The top of the baffle 19 is located in the cavity of the stationary disk 21. The baffle 19 is provided with a sliding groove, as shown in fig. 7, the rotating disc 20 is provided with an arc-shaped sliding strip 26, one end of the sliding strip 26 is close to the center of the rotating disc 20, the other end of the sliding strip 26 is far away from the center of the rotating disc 20, and the sliding strip 26 penetrates through the sliding groove of the baffle 19, so that when the rotating disc 20 rotates, the sliding strip 26 moves in the sliding groove of the baffle 19, and the sliding strip 26 is arc-shaped, so that the baffle 19 can be driven to move transversely in the elongated hole 22.

Referring to fig. 5, the driving plate 18 is slidably connected to the column 17 along the axial direction of the column 17, specifically, a spiral unidirectional sliding groove is formed in the side wall of the column 17, a sliding rod is welded to the driving plate 18, and the sliding rod is inserted into the sliding groove. The top of the fixed disk 21 is provided with an annular protruding part, the driving plate 18 is located in the middle of the protruding part, a first pressure spring 23 is connected between the driving plate 18 and the fixed disk 21, and in order to limit the driving plate 18, an expansion link (not shown in the figure) is connected between the driving plate 18 and the fixed disk 21, so that the driving plate 18 can vertically slide relative to the fixed disk 21 under the action of the expansion link and cannot transversely move. The protruding portion of the fixed disk 21 is transversely and slidably connected with a clamping strip 27 for clamping the driving plate 18 on the fixed disk 21, specifically, a strip-shaped dovetail groove is formed in the protruding portion of the fixed disk 21, and a protruding block is welded at the bottom of the clamping strip 27 and located in the dovetail groove. The end part of the clamping strip 27 far away from the column 17 is tied with a connecting rope 30, and the connecting rope 30 is connected with a wind bag 28.

The clamping unit 14 in this embodiment further includes a supporting block 31, a second pressure spring 32 is connected between the supporting block 31 and the end of the clamping strip 27, the supporting block 31 is rotatably connected with a rotating wheel 29 through a pin, and the connecting rope 30 crosses the rotating wheel 29. An air guide cover 24 is fixedly arranged on the fixed disc 21 through screws, the air guide cover 24 is in a horn shape, an air bag 28 is positioned above the air guide cover 24, an air hole 25 is formed in the top of the air guide cover 24, and a connecting rope 30 penetrates through the air hole 25. The edges of the wind pocket 28 are adhered to the top of the wind scooper 24 by adhesive tape. The bottom of the wind scooper 24 is located outside the edge of the fixed tray 21, so that the wind scooper 24 has a better air gathering effect.

The clamping strip 27 in the embodiment is positioned above the driving plate 18 under the action of the second compression spring 32, the clamping strip 27 clamps the driving plate 18 in the middle of the protruding part of the fixed disk 21, and the driving plate 18 cannot be bounced open under the action of the first compression spring 23.

In this embodiment, if the hopper 3 is in the lifting process, the pull rope 2 may be broken suddenly due to long-time friction, and the like, the hopper 3 may fall downwards under the action of gravity, the speed of the hopper 3 under the acceleration of gravity is increased, and the hopper 3 drives the clamping unit 14 to move downwards together in the falling process of the hopper 3. In the downward movement process of the clamping unit 14, air moves upward relative to the clamping unit 14, the air enters the air guide cover 24 through the bottom of the air guide cover 24 and is gathered, air in the air guide cover 24 is blocked by the air pocket 28, along with the falling speed of the hopper 3, the force of the air in the air guide cover 24 which upwards blows the air pocket 28 is larger than the viscous force of the adhesive tape on the air guide cover 24 of the air pocket 28, the air pocket 28 is blown away from the air guide cover 24 by the wind, the air is trapped by the air guide cover 24, and the air pocket 28 has the tendency of moving upward under the action of the wind force. When the dropping speed of the clamping unit 14 reaches a certain value, as shown in fig. 6, the wind pocket 28 has a certain upward pulling force on the connecting rope 30, the connecting rope 30 pulls the clamping strip 27 to overcome the elastic force of the second compression spring 32, the clamping strip 27 slides on the fixed disk 21 in the direction away from the cylinder 17, the clamping strip 27 is separated from the driving plate 18, and the clamping strip 27 no longer fixes the driving plate 18. The drive plate 18 is then moved away from the fixed disk 21 by the action of the first compression spring 23, the drive plate 18 sliding on the cylinder 17. The driving plate 18 and the column 17 in the scheme form a column cam mechanism, when a sliding rod on the driving plate 18 slides in a sliding groove on the column 17, the column 17 is pushed to rotate, the column 17 drives the rotating disc 20 in fig. 7 to rotate clockwise, the sliding strip 26 on the rotating disc 20 slides in the sliding groove, because the sliding strip 26 is arc-shaped, one end of the sliding strip 26 is close to the center of the rotating disc 20, and the other end of the sliding strip 26 is far away from the center of the rotating disc 20, the sliding strip 26 drives the two baffle plates 19 to be far away from each other on the fixed disc 21, the baffle plates 19 extend out from the edge of the fixed disc 21, and the baffle plates 19 abut against the baffle plates 16 on the vertical plate 15, so that the falling hopper 3 stops moving downwards.

Therefore, according to the embodiment, even when the pull rope 2 is broken, the hopper 3 can be prevented from dropping, so that the anti-dropping effect of the hopper 3 is better. The air pocket bag 28 can buffer the falling of the hopper 3 under the action of air, so that the hopper 3 can stably fall, and the hopper 3 is prevented from being overturned and inclined to pour out materials in the falling process; and hopper 3 can not take place the slope under the effect of pocket 28, and joint unit 14 can not take place the slope like this, has guaranteed that baffle 19 on joint unit 14 can be comparatively stable counterbalance with dog 16 on riser 15.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make various changes and modifications without departing from the concept of the present invention, and these should be construed as the scope of protection of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent. The techniques, shapes, and structural parts, which are omitted from the description of the present invention, are all known techniques.

Claims

1. Building material hoisting device with prevent weighing down function, including the rope roll, the winding has stay cord, its characterized in that on the rope roll: a fixed cylinder is sleeved on the outer side of the rope roller, a plurality of clamping grooves distributed circumferentially are formed in the inner wall of the fixed cylinder, a swing rod is rotatably connected to the rope roller, a clamping block is fixedly connected to the end portion of the swing rod, and an elastic part used for pushing the clamping block into the clamping grooves is connected between the swing rod and the rope roller; the rope roller is connected with a rope fastening connected with the clamping block, the rope roller is connected with a cutter in a sliding mode along the radial direction of the rope roller, the blade part of the cutter faces the rope fastening, and the cutter is located between the axis of the rope roller and the rope fastening; one end of the pull rope, which is far away from the rope roller, is connected with a hopper;

the hopper is characterized by further comprising vertical plates positioned on two sides of the hopper, the vertical plates are fixed on the ground, a plurality of stop blocks are vertically and fixedly connected to the vertical plates, a clamping unit is connected to the hopper and comprises a fixed disc and a rotating disc, the rotating disc is coaxially and rotatably connected to the fixed disc, a baffle is transversely and slidably connected to the fixed disc, a sliding groove is formed in the baffle, an arc-shaped sliding strip is arranged on the fixed disc and inserted into the sliding groove, one end of the sliding strip is close to the circle center of the rotating disc, and the other end of the sliding strip is far away from the circle center of the rotating disc; the clamping unit further comprises a cylindrical cam mechanism, the cylindrical cam mechanism comprises a cylinder and a drive plate, the drive plate is connected to the cylinder in a sliding mode along the axial direction of the cylinder, a first pressure spring is connected between the drive plate and the fixed disk, a clamping strip used for clamping the drive plate to the fixed disk is connected to the fixed disk in a sliding mode, a connecting rope is connected to the end portion of the clamping strip, and an air bag is connected to the connecting rope.

2. The building material lifting device with the fall prevention function according to claim 1, characterized in that: the elastic part is a torsion spring which is positioned on the part where the swing rod is rotatably connected with the rope roller.

3. The building material lifting device with the fall prevention function according to claim 1, characterized in that: the rope roller is fixedly connected with a cutting table, and the tether is located between the cutting table and the cutter.

4. The building material lifting device with the fall prevention function according to claim 1, characterized in that: the rope roller is provided with a strip-shaped groove, the cutter is positioned in the strip-shaped groove, and a tension spring is connected between the end part of the cutter far away from the tether and the end part of the strip-shaped groove.

5. The building material lifting device with the fall prevention function according to claim 1, characterized in that: the clamping unit further comprises a supporting block, a second pressure spring is connected between the supporting block and the end portion of the clamping strip, a rotating wheel is rotatably connected to the supporting block, and the connecting rope spans over the rotating wheel.

6. The building material lifting device with fall prevention function according to claim 5, characterized in that: the fixed disc is further provided with an air guide cover, the air pocket bag is located above the air guide cover, an air hole is formed in the top of the air guide cover, and the connecting rope penetrates through the air hole.

7. The building material lifting device with fall prevention function according to claim 6, characterized in that: the edge of the air pocket bag is bonded on the air guide cover.

8. The building material lifting device with fall prevention function according to claim 7, characterized in that: the bottom of the wind scooper is positioned on the outer side of the edge of the fixed disc.