A building material lifting device for high-rise building construction

Abstract

The application relates to the technical field of material lifting, in particular to a building material lifting device for high-rise building construction; the building material lifting device comprises a material box and guide ropes arranged on the two sides of the material box, two emergency braking devices are arranged on the two guide ropes respectively and are connected with the material box, each emergency braking device comprises a first braking mechanism and a second braking mechanism, the first braking mechanism is connected with the material box, and the second braking mechanism is connected with the top of the first braking mechanism; the application is characterized in that the emergency braking devices are arranged on the two guide ropes respectively and are connected with the guide ropes, when the material box normally lifts, the two emergency braking devices can slide on the guide ropes along with the lifting of the material box, when the material box suddenly and rapidly drops, the two emergency braking devices can be locked on the guide ropes, so that the material box can be decelerated and braked, the material box can be braked in an emergency when the steel wire rope breaks, and the safety performance of the material box during use is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material lifting, in particular to a building material lifting device for high-rise building construction. BACKGROUND

[0002] Building engineering refers to the engineering entity formed by the construction of various housing buildings and their auxiliary facilities and the installation activities of the lines, pipelines and equipment matched therewith, wherein "housing building" refers to an engineering that has a roof, beam column, wall, foundation and can form an internal space to meet the needs of people's production, residence, study and public activities, and in building construction, materials often need to be sent from low to high, and the existing material transportation is generally through steel wire rope to directly lift the material box, but in the lifting process, if the steel wire rope breaks, the material box will fall from high altitude, causing serious safety accidents.

[0003] A material lifting device is disclosed in Chinese patent CN112027889A, which adds a self-locking function to the winding end of the steel wire rope, thereby increasing the stability of the material box through the self-locking function, but the following technical problems are not disclosed in this application:

[0004] 1. The prior art cannot limit the two sides of the material box during the lifting process, so the material box may rotate during the lifting process;

[0005] 2. The prior art cannot provide protection measures for the material box if the steel wire rope breaks accidentally. SUMMARY

[0006] To solve the above problems, a building material lifting device for high-rise building construction is provided, which is characterized in that a guide cable is arranged on each side of the material box, and an emergency brake device capable of sliding up and down along the guide cable is arranged on each guide cable, the two emergency brake devices are connected to the two sides of the material box, when the material box is normally lifted, the two emergency brake devices can slide on the guide cable with the lifting of the material box, and when the material box accidentally falls rapidly, the two emergency brake devices can be locked on the guide cable, so as to slow down the material box, solving the problem that the steel wire rope can not brake the material box when it breaks, and increasing the safety performance of the material box during use.

[0007] To solve the problems in the prior art, the technical scheme adopted by the present application is as follows:

[0008] The utility model provides a building material hoisting device for high-rise building construction, including material box, both sides of material box are equipped with sling, and the sling is connected with external lifting equipment through steel wire rope, both sides of material box are equipped with the vertical fixed guide cable respectively, and the emergency brake device that slows down the material box in emergency is equipped on two guide cables, and two emergency brake devices are connected with both sides of material box respectively, and each emergency brake device includes first brake mechanism and second brake mechanism, and first brake mechanism is connected with material box, and second brake mechanism is connected with the top of first brake mechanism.

[0009] Preferably, the first brake mechanism includes a connecting frame, a sliding block, a brake swing arm, and a clamping block. The connecting frame is installed on one side of the material box, and the side of the connecting frame away from the material box has an opening extending upward and downward. The connecting frame is sleeved on the guide cable through the opening. The sliding block is horizontally sleeved on the guide cable and can slide up and down. The sliding block is above the connecting frame and is connected to the bottom of the second brake mechanism through a connecting block. The brake swing arm has a pair of top portions that are respectively hinged to both ends of the sliding block. Elastic torsion springs are arranged at the hinged portions of the two brake swing arms and the sliding block. The bottom portions of the two brake swing arms extend downward after passing through the opening of the connecting frame. Limiting blocks extend outward from the bottom portions of the two brake swing arms on opposite sides. The clamping block has a pair of clamping portions that are respectively installed on the sides of the two brake swing arms that are close to each other. In the braking state, the clamping portions of the two clamping blocks can be in close contact with the guide cable.

[0010] Preferably, the clamping portions of the two clamping blocks have a plurality of protrusions evenly distributed.

[0011] Preferably, the elasticity of the elastic torsion spring can cause the two brake swing arms to tilt outward when the material box moves downward normally.

[0012] Preferably, the length of the sliding block is not less than the length of the connecting frame.

[0013] Preferably, the second brake mechanism includes a box body, a brake wheel, a gear, and a centrifugal brake assembly. The box body is sleeved on the guide cable and can slide up and down. The bottom of the box body is connected to the top of the connecting block. The box body has two brake wheels that are vertically arranged and can rotate. The two brake wheels are in the same horizontal plane and are respectively located on both sides of the guide cable. The surfaces of the two brake wheels are respectively in contact with the surface of the guide cable. The gear has a pair of gears that are vertically arranged and can rotate in the box body. The two gears are coaxially arranged with the two brake wheels. The centrifugal brake assembly is installed outside the box body and is in transmission connection with the gear.

[0014] Preferably, the surfaces of the two brake wheels have a plurality of protrusions arranged in a ring shape.

[0015] Preferably, the centrifugal brake assembly comprises a fixed disc, a rotating disc and centrifugal assemblies; the fixed disc is vertically installed on the side of the box body away from the material box, the inside of the fixed disc has a cavity and a plurality of inwardly extending limiting teeth inside; the rotating disc is vertically and rotatably installed inside the fixed disc, and the rotating disc is in gear transmission connection; the number of centrifugal assemblies is the same as the number of limiting teeth, and a plurality of centrifugal assemblies are arranged in an annular array on the side of the rotating disc away from the material box.

[0016] Preferably, the centrifugal assembly comprises a centrifugal block, a fixed block, a connecting rod and a spring; one end of the centrifugal block is installed on the side of the rotating disc away from the material box through a fixed rod; the fixed block is installed on the side of the rotating disc away from the material box, and the fixed block is located inside the end of the centrifugal block away from the fixed rod; the connecting rod is slidably sleeved on the fixed block, one end of the connecting rod is connected with the fixed block, and the other end of the connecting rod is provided with a limiting disc; the spring is sleeved on the connecting rod, one end of the spring abuts against the fixed block, and the other end of the spring abuts against the limiting disc.

[0017] Preferably, the elasticity of the spring can keep the connecting rod stationary under uniform rotation of the rotating disc.

[0018] The beneficial effects of the present application compared with the prior art are:

[0019] The present application is provided with guide ropes on both sides of the material box, and the two guide ropes are respectively provided with emergency brake devices capable of sliding up and down along the guide ropes. The two emergency brake devices are respectively connected to the two sides of the material box. When the material box is normally lifted, the two emergency brake devices can slide on the guide ropes with the lifting of the material box. When the material box accidentally drops rapidly, the two emergency brake devices can be locked on the guide ropes, so as to brake the material box and increase the safety performance of the material box during use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a three-dimensional structure diagram of a building material lifting device for high-rise building construction Figure 1 ;

[0021] Figure 2 It is a structure front view of a building material lifting device for high-rise building construction

[0022] Figure 3 It is Figure 2 an enlarged view of A in FIG. 4;

[0023] Figure 4 It is a three-dimensional structure diagram of an emergency brake device in a building material lifting device for high-rise building construction

[0024] Figure 5It is a kind of building material hoisting device for high-rise building construction first brake mechanism three-dimensional structure schematic diagram;

[0025] Figure 6 It is a kind of building material hoisting device for high-rise building construction first brake mechanism three-dimensional structure exploded view;

[0026] Figure 7 It is a kind of building material hoisting device for high-rise building construction second brake mechanism three-dimensional mechanism schematic diagram;

[0027] Figure 8 It is a kind of building material hoisting device for high-rise building construction local three-dimensional structure schematic Figure 1 ;

[0028] Figure 9 It is a kind of building material hoisting device for high-rise building construction centrifugal brake assembly three-dimensional structure schematic diagram;

[0029] Figure 10 It is a kind of building material hoisting device for high-rise building construction centrifugal brake assembly front view;

[0030] Figure 11 It is a kind of building material hoisting device for high-rise building construction local three-dimensional structure schematic Figure 2 .

[0031] Figure label is:

[0032] 1-material box;11-hanging rope;

[0033] 2-steel wire rope;

[0034] 3-guide cable;

[0035] 4-emergency brake device;

[0036] 41-first brake mechanism;411-connection frame;412-sliding block;413-connection block;414-brake swing arm;4141-limit block;415-clip block;4151-bump;

[0037] 42-second brake mechanism;421-box;422-brake wheel;4222-bump;423-gear;424-centrifugal brake assembly;4241-fixed disc;4242-limit tooth;4243-rotary disc;425-centrifugal assembly;4251-centrifugal block;4252-fixed rod;4253-fixed block;4254-connection rod;4255-spring. DETAILED DESCRIPTION

[0038] For further understanding of the features, technical means and specific purposes and functions of the present application, the present application is described in further detail below in combination with the drawings and specific embodiments.

[0039] Referring to Figures 1 to 11 As shown in the drawings, a building material lifting device for high-rise building construction, comprising a material box 1, the material box 1 is provided with a lifting rope 11 on both sides, the lifting rope 11 is connected with external lifting equipment through a steel wire rope 2, the material box 1 is provided with a vertical and fixed guide cable 3 on both sides, the two guide cables 3 are provided with an emergency brake device 4 for decelerating and braking the material box 1 in emergency, the two emergency brake devices 4 are connected with the two sides of the material box 1 respectively, each emergency brake device 4 comprises a first brake mechanism 41 and a second brake mechanism 42, the first brake mechanism 41 is connected with the material box 1, and the second brake mechanism 42 is connected with the top of the first brake mechanism 41.

[0040] In the lifting process of the material box 1, in order to prevent the rupture of the steel wire rope 2 from causing the material box 1 to rapidly descend and thus causing a transportation accident, the guide cable 3 for keeping balance is arranged on both sides of the material box 1, the emergency brake device 4 has a pair and is installed on the two guide cables 3 respectively, the two emergency brake devices 4 are connected with the two ends of the material box 1 respectively, the emergency brake device 4 comprises the first brake mechanism 41 and the second brake mechanism 42, the first brake mechanism 41 is connected with the material box 1, the top of the first brake mechanism 41 is connected with the second brake mechanism 42, in the normal lifting process of the material box 1, the first brake mechanism 41 and the second brake mechanism 42 can slide along the guide cable 3, when the rupture of the steel wire rope 2 causes the material box 1 to rapidly descend, since the first brake mechanism 41 is connected with the material box 1, the first brake mechanism 41 can drive the second brake mechanism 42 to rapidly descend together with the material box 1, the second brake mechanism 42 locks the guide cable 3 in the rapid descending process, so as to enable the second brake mechanism 42 to drive the first brake mechanism 41 to decelerate, the deceleration of the first brake mechanism 41 can cause a speed difference between the material box 1 and the first brake mechanism 41, so as to realize that the first brake mechanism 41 as a whole locks the guide cable 3, and since the first brake mechanism 41 is connected with the material box 1, the deceleration braking of the material box 1 can be realized, and the safety accident caused by the rapid descent of the material box 1 is effectively prevented.

[0041] Referring to Figures 4 to 6As shown, the first brake mechanism 41 comprises a connecting frame 411, a sliding block 412, brake swing arms 414 and clamping blocks 415; the connecting frame 411 is installed on one side of the material box 1, the connecting frame 411 has an opening penetrating from top to bottom on the side away from the material box 1, and the connecting frame 411 is sleeved on the guide cable 3 through the opening; the sliding block 412 is horizontally sleeved on the guide cable 3 and can slide up and down, the sliding block 412 is located above the connecting frame 411 and is connected to the bottom of the second brake mechanism 42 through a connecting block 413; the brake swing arms 414 are provided in pairs, the top portions of the two brake swing arms 414 are hinged to the two ends of the sliding block 412 respectively, the hinged portions of the two brake swing arms 414 and the sliding block 412 are provided with elastic torsion springs, the bottom portions of the two brake swing arms 414 are directed downward after penetrating through the opening of the connecting frame 411, and the bottom portions of the two brake swing arms 414 away from each other are provided with limiting blocks 4141 extending outward; the clamping blocks 415 are provided in pairs, the two clamping blocks 415 are installed on the sides of the bottom portions of the two brake swing arms 414 close to each other, and the clamping portions of the two clamping blocks 415 can be attached to the guide cable 3 in the braking state.

[0042] When the second brake mechanism 42 drives the first brake mechanism 41 to slow down, the first brake mechanism 41 can brake the material box 1, when the first brake mechanism 41 is slowed down, the first brake mechanism 41 can generate a speed difference with the material box 1, the descending speed of the material box 1 is greater than that of the first brake mechanism 41, so that the connecting frame 411 installed on the material box 1 can quickly descend, the quick descent of the connecting frame 411 can drive the bottom portions of the two brake swing arms 414 to approach the guide cable 3, so that the clamping blocks 415 can be tightly attached to the surface of the guide cable 3 to realize locking, and when the connecting frame 411 descends to the limiting blocks 4141 at the bottom portions of the two brake swing arms 414, the material rack can be slowed down and braked through the locking of the clamping blocks 415.

[0043] Referring to Figure 6 As shown, the clamping portions of the two clamping blocks 415 are provided with a plurality of protrusions 4151 uniformly distributed.

[0044] In the braking state, the two clamping blocks 415 are tightly attached to the guide cable 3, in order to increase the friction between the two clamping blocks 415 and the guide cable 3, so as to realize quick deceleration braking, the clamping portions of the two clamping blocks 415 are provided with the protrusions 4151 uniformly distributed, the protrusions 4151 are tightly attached to the guide cable 3 during clamping, the friction between the two clamping blocks 415 and the guide cable 3 is increased, so as to increase the braking effect and realize quick braking.

[0045] Referring to Figures 4 to 6 As shown, the elasticity of the elastic torsion springs can make the two brake swing arms 414 tilt outward when the material box 1 normally moves downward.

[0046] When the material box 1 is in normal descending process, in order to prevent the connecting frame 411 arranged on both sides of the material box 1 from causing the bottom of the two brake swing arms 414 to contract towards the guide cable 3 during the downward movement, an elastic torsion spring is arranged at the hinge between the two brake swing arms 414 and the sliding block 412, and the elasticity of the elastic torsion spring can keep the two brake swing arms 414 in an inclined state when the material box 1 is in normal descending process, so as to avoid the bottom of the two brake swing arms 414 from contracting towards the guide cable 3 to cause braking, and realize the descending of the material box 1 in the normal working state.

[0047] Referring to Figure 5 As shown in the figure, the length of the sliding block 412 is not less than the length of the connecting frame 411.

[0048] When the material box 1 is in normal ascending process, in order to realize the synchronous ascending of the first brake mechanism 41 and the second brake mechanism 42, the length of the sliding block 412 is set to be not less than the length of the connecting frame 411, so that the connecting frame 411 will ascend with the material box 1 during the ascending process of the material box 1, and the ascending of the connecting frame 411 can make the sliding block 412 move upwards on the guide cable 3, realize the synchronous ascending of the first brake mechanism 41 and the second brake mechanism 42 with the material box 1, and thus guarantee that the material box 1 can be braked in the first time when the material box 1 is in emergency state.

[0049] Referring to Figures 7 to 11 As shown in the figure, the second brake mechanism 42 comprises a box body 421, a brake wheel 422, a gear 423 and a centrifugal brake assembly 424; the central part of the box body 421 is sleeved on the guide cable 3 and can slide up and down, the bottom of the box body 421 is connected with the top of the connecting block 413, the box body 421 is provided with two brake wheels 422 which are vertically arranged and can rotate, the two brake wheels 422 are in the same horizontal plane and are respectively located on both sides of the guide cable 3, and the surfaces of the two brake wheels 422 respectively abut against the surface of the guide cable 3; the gear 423 has a pair, both of the gears 423 are vertically arranged and can rotate in the box body 421, and both of the gears 423 are coaxially arranged with the two brake wheels 422; the centrifugal brake assembly 424 is installed outside the box body 421 and is in transmission connection with the gear 423.

[0050] When the second brake mechanism 42 is rapidly descending, the locking of the guide cable 3 is needed to slow down the first brake mechanism 41. A box 421 is arranged on the guide cable 3 and can slide up and down. Two brake wheels 422 are arranged in the box 421 and can rotate vertically. The two brake wheels 422 are in the same horizontal plane and are located on both sides of the guide cable 3. The surfaces of the two brake wheels 422 abut the surfaces of the guide cable 3. The two brake wheels 422 can rotate by friction with the guide cable 3 when the box 421 moves up and down. Two gears 423 are arranged on one end of the two brake wheels 422. A centrifugal brake assembly 424 is arranged outside the box 421 and is in transmission connection with one of the two gears 423. When the box 421 normally rises and falls, the two brake wheels 422 rotate to drive the two gears 423 to rotate. The rotation of the gears 423 drives the centrifugal brake assembly 424 to rotate. At this time, the rotation speed of the gears 423 keeps the centrifugal brake assembly 424 stable, so that the brake assembly 424 does not brake. When the box 421 rapidly descends, the two brake wheels 422 rapidly rotate to drive the two gears 423 to rapidly rotate. Because the rotation speed is too fast at this time, the centrifugal brake assembly 424 is locked, the gears 423 are locked, and finally the two brake wheels 422 are braked on the guide cable 3, thereby slowing down the first brake mechanism 41.

[0051] Referring to Figure 8 As shown, the surfaces of the two brake wheels 422 have a plurality of annular array protrusions 4222.

[0052] When the box 421 moves up and down, the two brake wheels 422 rotate. In order to increase the friction between the two brake wheels 422 and the guide cable 3, avoid slipping between the two brake wheels 422 and the guide cable 3 during rapid descent of the material box 1, and affect the braking effect of the centrifugal brake assembly 424, a plurality of annular array protrusions 4222 are arranged on the surface of the brake wheel 422. The protrusions 4222 abut the surface of the guide cable 3. In the working state, the protrusions 4222 increase the friction between the brake wheel 422 and the guide cable 3, thereby avoiding slipping of the brake wheel 422 and increasing the braking effect.

[0053] Referring to Figures 9 to 11As shown, the centrifugal brake assembly 424 comprises a fixed disc 4241, a rotating disc 4243 and centrifugal assemblies 425; the fixed disc 4241 is installed vertically on the side of the box body 421 away from the material box 1, the inside of the fixed disc 4241 has a cavity and a plurality of inwardly extending limiting teeth 4242 inside; the rotating disc 4243 is installed vertically and rotatably inside the fixed disc 4241, and the rotating disc 4243 is in transmission connection with the gear 423; the number of the centrifugal assemblies 425 is the same as the number of the limiting teeth 4242, and a plurality of centrifugal assemblies 425 are arranged in an annular array on the side of the rotating disc 4243 away from the material box 1.

[0054] When the rapid rotation of the gear 423 can enable the centrifugal brake assembly 424 to lock the gear 423, by installing the fixed disc 4241 on the box body 421, the inside of the fixed disc 4241 is provided with a plurality of inwardly extending limiting teeth 4242, the rotating disc 4243 is installed inside the fixed disc 4241 and is in transmission connection with the gear 423, the side of the rotating disc 4243 away from the material box 1 is provided with a plurality of centrifugal assemblies 425 arranged in an annular array, and the number of the centrifugal assemblies 425 is the same as the number of the limiting teeth 4242, when the gear 423 drives the rotating disc 4243 to rotate rapidly to drive the plurality of centrifugal assemblies 425 to rotate, because the rotation speed is too fast at this time, the plurality of centrifugal assemblies 425 can be clamped on the limiting teeth 4242 during rotation, thereby achieving locking of the rotating disc 4243, and the locking of the rotating disc 4243 can achieve locking of the gear 423; when the rotation speed of the gear 423 is too slow, the centrifugal assemblies 425 will rotate normally and will not be clamped on the limiting teeth 4242.

[0055] Referring to Figure 11 As shown, the centrifugal assembly 425 comprises a centrifugal block 4251, a fixed block 4253, a connecting rod 4254 and a spring 4255; one end of the centrifugal block 4251 is installed on the side of the rotating disc 4243 away from the material box 1 through a fixed rod 4252; the fixed block 4253 is installed on the side of the rotating disc 4243 away from the material box 1, and the fixed block 4253 is located inside the end of the centrifugal block 4251 away from the fixed rod 4252; the connecting rod 4254 is sleeved on the fixed block 4253 in a slidable manner, one end of the connecting rod 4254 is connected with the fixed block 4253, and the other end of the connecting rod 4254 is provided with a limiting disc; the spring 4255 is sleeved on the connecting rod 4254, one end of the spring 4255 abuts against the fixed block 4253, and the other end of the spring 4255 abuts against the limiting disc.

[0056] When the material box 1 is in normal lifting process, the rotation speed of the rotating disc 4243 cannot cause the centrifugal assembly 425 to lock the rotating disc 4243, at this time, the plurality of centrifugal assemblies 425 rotate along the axis of the rotating disc 4243, when the material box 1 is accidentally and rapidly lowered, the rotation speed of the rotating disc 4243 becomes faster, thereby causing the centrifugal block 4251 in the centrifugal assembly 425 to rotate outward with the fixed end as the axis, thereby in the rotating process, the centrifugal block 4251 can be clamped on the limiting tooth 4242 inside the fixed disc 4241, thereby causing the locking of the rotating disc 4243.

[0057] Referring to Figures 9 to 11 As shown, the elasticity of the spring 4255 can keep the connecting rod 4254 stationary under the uniform rotation of the rotating disc 4243.

[0058] When the rotating disc 4243 is in normal rotation process, the elasticity of the spring 4255 needs to keep the connecting rod 4254 fixed, thereby being able to guarantee that the centrifugal block 4251 does not move easily, realizing the normal rotation of the rotating disc 4243, thereby finally realizing the normal lifting of the material box 1.

[0059] The above embodiments only express one or several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A building material hoisting device for high-rise building construction, comprising a material box (1), both sides of the material box (1) are provided with a lifting rope (11), the lifting rope (11) is connected with external lifting equipment through a steel wire rope (2), characterized in that, The material box (1) is provided with two vertical and fixed guide ropes (3) on two sides, and the two guide ropes (3) are provided with emergency braking devices (4) for slowing down the material box (1) in emergency, the two emergency braking devices (4) are connected with the two sides of the material box (1) respectively, and each emergency braking device (4) comprises a first braking mechanism (41) and a second braking mechanism (42), the first braking mechanism (41) is connected with the material box (1), and the second braking mechanism (42) is connected with the top of the first braking mechanism (41); The first braking mechanism (41) comprises a connecting frame (411), a sliding block (412), a brake swing arm (414) and a clamping block (415); the connecting frame (411) is installed on one side of the material box (1), the side of the connecting frame (411) away from the material box (1) has an opening penetrating from top to bottom, and the connecting frame (411) is sleeved on the guide rope (3) through the opening; the sliding block (412) is horizontally sleeved on the guide rope (3) and can slide up and down, the sliding block (412) is located above the connecting frame (411) and is connected with the bottom of the second braking mechanism (42) through a connecting block (413); the brake swing arm (414) has a pair, the top of the two brake swing arms (414) is hinged with the two ends of the sliding block (412) respectively, the hinged portions of the two brake swing arms (414) and the sliding block (412) are provided with elastic torsion springs, the bottoms of the two brake swing arms (414) are directed downward after penetrating through the opening of the connecting frame (411), and the bottoms of the two brake swing arms (414) away from each other are provided with limiting blocks (4141) extending outward; the clamping block (415) has a pair, the two clamping blocks (415) are installed on the sides of the bottoms of the two brake swing arms (414) close to each other in a one-to-one correspondence, and in the braking state, the clamping portions of the two clamping blocks (415) can be attached to the guide rope (3); The second braking mechanism (42) comprises a box body (421), a brake wheel (422), a gear (423) and a centrifugal brake assembly (424); the center of the box body (421) is sleeved on the guide rope (3) and can slide up and down, the bottom of the box body (421) is connected with the top of the connecting block (413), and the box body (421) is provided with two brake wheels (422) which are vertical and can rotate; the two brake wheels (422) are in the same horizontal plane and are located on the two sides of the guide rope (3), and the surfaces of the two brake wheels (422) are respectively in abutment with the surface of the guide rope (3); the gear (423) has a pair, the two gears (423) are vertically installed in the box body (421) and can rotate, and the two gears (423) are coaxially arranged with the two brake wheels (422) respectively; the centrifugal brake assembly (424) is installed outside the box body (421) and is in transmission connection with the gear (423).

2. The construction material hoisting device for high-rise building construction according to claim 1, characterized in that, The clamping portions of the two clamping blocks (415) have a plurality of protrusions (4151) distributed uniformly.

3. The construction material hoisting device for high-rise building construction according to claim 1, characterized in that, The elasticity of the elastic torsion spring can make the two brake swing arms (414) tilt outward when the material box (1) moves downward normally.

4. The construction material hoisting device for high-rise building construction according to claim 1, characterized in that, The length of the sliding block (412) is not less than the length of the connecting frame (411).

5. The construction material hoisting device for high-rise building construction according to claim 1, characterized in that, The surface of each of the two braking wheels (422) has a plurality of annular arrays of protrusions (4222).

6. The construction material hoisting device for high-rise building construction according to claim 1, characterized in that, The centrifugal brake assembly (424) comprises a fixed disc (4241), a rotating disc (4243) and centrifugal assemblies (425); the fixed disc (4241) is installed vertically on the side of the box body (421) away from the material box (1), the inside of the fixed disc (4241) has a cavity and a plurality of inwardly extending limiting teeth (4242); the rotating disc (4243) is installed vertically and rotatably in the inside of the fixed disc (4241), and the rotating disc (4243) is in transmission connection with the gear (423); the number of the centrifugal assemblies (425) is the same as that of the limiting teeth (4242), and a plurality of centrifugal assemblies (425) are annularly arranged on the side of the rotating disc (4243) away from the material box (1).

7. The construction material hoisting device for high-rise building construction according to claim 6, characterized in that, The centrifugal assembly (425) comprises a centrifugal block (4251), a fixed block (4253), a connecting rod (4254) and a spring (4255); one end of the centrifugal block (4251) is installed on the side of the rotating disc (4243) away from the material box (1) through a fixed rod (4252); the fixed block (4253) is installed on the side of the rotating disc (4243) away from the material box (1), and the fixed block (4253) is located in the inside of the end of the centrifugal block (4251) away from the fixed rod (4252); the connecting rod (4254) is slidably sleeved on the fixed block (4253), one end of the connecting rod (4254) is connected with the fixed block (4253), and the other end of the connecting rod (4254) is provided with a limiting disc; the spring (4255) is sleeved on the connecting rod (4254), one end of the spring (4255) is in abutment with the fixed block (4253), and the other end of the spring (4255) is in abutment with the limiting disc.

8. The construction material hoisting device for high-rise building construction according to claim 7, characterized in that, The elasticity of the spring (4255) can keep the connecting rod (4254) stationary under uniform rotation of the rotating disc (4243).

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