A safety protection device and method for building construction elevator

Abstract

The present invention discloses a safety protection device for a building construction elevator, which relates to the technical field of elevators and comprises a lifting mechanism, wherein the auxiliary mechanism comprises an L-shaped block, an electric cylinder is installed on one side of the L-shaped block, a buffer pad is bonded and connected to the surface of the limit block, a rotating rod is rotatably connected between the interiors of the two single-hole blocks through a bearing, a toothed plate is fixed inside each of the rectangular grooves, and a plurality of gears are fixedly sleeved on the outer surface of each of the rotating rods. By arranging the auxiliary mechanism, the present invention can start the brake when a fault occurs during the use of the building construction elevator, the car falls rapidly and the speed limiter cannot be used normally, and then the rapidly falling car can be decelerated until it stops, that is, the safety protection performance of the building construction elevator is improved again to a certain extent, which not only improves the use effect of the safety protection device for the building construction elevator, but also improves the use efficiency of the safety protection device for the building construction elevator.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and in particular to a safety protection device and method for a building construction elevator. Background Art

[0002] An elevator is a vertical lift powered by a traction motor and equipped with a box-shaped cabin. It is used to carry people or goods in multi-story buildings. During the construction process, as the number of floors of the building continues to increase, construction workers and construction materials need to be frequently transported between different floors. At this time, in order to improve construction efficiency, construction sites generally use construction elevators, and at the same time, they are equipped with safety protection devices to ensure the safety of the use of construction elevators.

[0003] In the existing technology, although the existing safety protection devices for building construction elevators can ensure the safety of building construction elevators during use to a certain extent and reduce the accident rate caused by failures of building construction elevators during actual use, the safety protection effect during use still needs to be improved. When a failure occurs during the use of the building construction elevator, the car falls rapidly and the speed limiter cannot be used normally, the brake of the safety protection device will not be able to start automatically. At this time, the rapidly falling car cannot be slowed down and stopped. At the same time, the spring buffer directly below the building construction elevator cannot completely reduce the impact force of the rapidly falling car to a safe range, that is, there are certain safety hazards, which not only reduces the use effect of the safety protection device for the building construction elevator, but also reduces the use efficiency of the safety protection device for the building construction elevator.

[0004] Therefore, we propose a safety protection device and method for building construction elevators to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide a safety protection device and method for a building construction elevator, so as to solve the problem that the safety protection effect of the existing building construction elevator safety protection device when used still needs to be improved. When a malfunction occurs during the use of the building construction elevator, the car falls rapidly and the speed limiter cannot be used normally, the brake of the safety protection device will not be able to start automatically. At this time, the rapidly falling car will not be able to be slowed down and stopped. At the same time, the spring buffer directly below the building construction elevator cannot completely reduce the impact force of the rapidly falling car to a safe range, that is, there are certain safety hazards, which not only reduces the use effect of the building construction elevator safety protection device, but also reduces the use efficiency of the building construction elevator safety protection device.

[0006] To achieve the above object, the present invention provides the following technical solutions: a safety protection device for a building construction elevator, comprising a lifting mechanism, a protection mechanism is arranged on the lifting mechanism, and an auxiliary mechanism is arranged on the protection mechanism;

[0007] The auxiliary mechanism includes an L-shaped block, an electric cylinder is installed on one side of the L-shaped block, a rectangular block is arranged on one side of the L-shaped block, a sliding hole is opened on one side of the rectangular block, a sliding block is arranged inside the sliding hole, a plurality of return springs are fixed to the side of the sliding block close to the L-shaped block, a placement groove is opened on the top of the rectangular block, a placement block is arranged inside the placement groove, a limit block is fixed on one side of the sliding block, a buffer pad is bonded and connected to the surface of the limit block, a single-hole block is fixed on the front surface and the rear surface of the rectangular block, a rotating rod is rotatably connected between the two single-hole blocks through a bearing, a plurality of rectangular grooves are opened on the top of the placement block, a tooth plate is fixed inside each of the rectangular grooves, and a plurality of gears are fixedly sleeved on the outer surface of each of the rotating rods.

[0008] Preferably, the fixed end of the electric cylinder movably passes through one side of the L-shaped block, the same end of the multiple return springs is fixed to the surface of the L-shaped block, the top of the inner wall of the sliding hole is connected to the bottom of the inner wall of the placement groove, the top of the sliding block is fixed to the bottom of the placement block, one side of the rectangular block is in contact with the surface of two buffer pads, the teeth of each gear are respectively meshed with the teeth of each tooth plate, and the telescopic end of the electric cylinder is slidably embedded in the surface of the placement block.

[0009] Preferably, the lifting mechanism includes an elevator frame, a mounting seat is fixed on the top of the elevator frame, a traction machine is installed on the upper side of the mounting seat, a first traction wheel is installed on the output end of the traction machine, two groups of car frames are fixed inside the elevator frame, a counterweight is slidably connected between the outer surfaces of one group of car frames, and a car frame is slidably connected between the outer surfaces of the other group of car frames, and two second traction wheels are rotatably connected to the top groove of the car frame.

[0010] Preferably, an auxiliary platform and an auxiliary frame are fixed to the top of the elevator frame, and a plurality of traction steel ropes are transmission-connected between the outer surface grooves of the auxiliary frame, the outer surface grooves of the first traction wheel, and the outer surface grooves of the two second traction wheels, and one end of each of the traction steel ropes movably passes through the top mounting end of the counterweight.

[0011] Preferably, the other end of each of the traction steel ropes is movably inserted through the outer surface of the auxiliary platform, one end of each of the traction steel ropes is movably sleeved between multiple wire holes on the top of the elevator frame, and fixed blocks are fixed between one ends of the multiple traction steel ropes and between the other ends of the multiple traction steel ropes.

[0012] Preferably, the top of one of the fixed blocks contacts the mounting end surface of the counterweight, the bottom of the other fixed block contacts the surface of the auxiliary platform, a car is fixed inside the car frame, and the L-shaped block and the rectangular block are both fixed on the upper side of the car.

[0013] Preferably, the protection mechanism includes a plurality of spring buffers, each of which is installed at the bottom of the inner wall of the elevator frame, an auxiliary seat is fixed to the bottom of the inner wall of the elevator frame, a third traction wheel is rotatably connected to the rotating shaft end of the auxiliary seat, and a speed limiter is installed on the top of the elevator frame.

[0014] Preferably, a speed limiting rope is connected for transmission between the speed limiter and the third traction wheel, a brake is installed between the two ends of the top of the car frame, and the two car frames of the other group are respectively located between the two braking ends of the brake, a connecting block is fixedly sleeved on the outer surface of the rotating shaft of one of the braking ends of the brake, and a sleeve is fixedly sleeved on the outer surface of the speed limiting rope.

[0015] Preferably, the connecting end of the connecting block is rotatably connected to the sleeve, one end of the rotating shaft of one of the braking ends of the brake is fixed to the end of the rotating rod close to the connecting block, the speed limiting rope is movably sleeved inside the top square hole of the elevator frame, and each of the spring buffers is directly below the car.

[0016] A method for a building construction elevator safety protection device comprises the following steps:

[0017] S1. When it is necessary to move construction workers and construction materials at a lower location to a higher location in a building, the first traction wheel is rotated forward by using the previously prepared elevator controller, the traction machine with positive rotation at the output end, and the mounting seat. Then, the first traction wheel with positive rotation, two second traction wheels, an auxiliary frame, an auxiliary platform, two fixed blocks, a counterweight, a mounting seat, a plurality of traction steel ropes, an elevator frame, two sets of car frames, and a car frame are used to move the car upwards smoothly.

[0018] S2. At the same time, the cooperation of the upward-moving car frame is used to make the auxiliary mechanism, brake, connection block and casing move synchronously. When the casing moves, the moving casing, auxiliary seat, third traction wheel and speed limiter are used to make the speed limit rope drive. When the construction workers and construction materials at the high place need to move down to the lower part of the building, the elevator controller prepared in advance, the traction machine with reverse output end and the previous linkage components are used to make the car move down from the high place to the low place.

[0019] S3. When the traction wire rope of the building construction elevator is broken during use and the car falls rapidly, the speed limiter is rotated rapidly by using the cooperation of the falling car, the connecting block, the sleeve, the auxiliary seat, the third traction wheel and the speed limit rope. When the speed limiter reaches a certain value, the speed limiter will stop the speed limit rope transmission;

[0020] S4, then the brake is automatically activated by using the cooperation of the speed limit rope, the sleeve and the connecting block of the stop transmission, and then the activated brake is used to reduce the speed of the rapidly falling car until it stops. When the speed of the car is reduced, but it is still moving downward and contacts the top of the multiple spring buffers, the multiple spring buffers are used to buffer the impact force of the rapidly falling car;

[0021] S5. When a construction elevator fails during use, the car falls rapidly and the speed limiter cannot be used normally, the prepared controller, electric cylinder and L-shaped block are used to push the placement block to move inside the placement slot, and then the moving placement block, multiple tooth plates, rectangular blocks, two single-hole blocks, bearings and multiple gears are used to drive the rotating rod to rotate, and then the rotating rotating rod is used to activate the brake, and then the activated brake is used in conjunction with a corresponding set of car frames and car frames to reduce the speed of the falling car until it stops moving.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention provides an auxiliary mechanism, so that when a fault occurs during the use of the building construction elevator, the car falls rapidly and the speed limiter cannot be used normally, the brake can be activated, and then the rapidly falling car can be decelerated until it stops, that is, the safety protection performance of the building construction elevator is improved again to a certain extent, which not only improves the use effect of the safety protection device of the building construction elevator, but also improves the use efficiency of the safety protection device of the building construction elevator. When a fault occurs during the use of the building construction elevator, the car falls rapidly and the speed limiter cannot be used normally, the cooperation of the controller, the electric cylinder and the L-shaped block can be used to push the placement block to move inside the placement slot;

[0024] 2. The present invention then utilizes the cooperation of the movable placement block, multiple tooth plates, rectangular blocks, two single-hole blocks, bearings and multiple gears to drive the rotating rod to rotate, and then utilizes the cooperation of the rotating rotating rod to activate the brake, and then utilizes the cooperation of the activated brake, a corresponding group of car frames and car frames to reduce the speed of the rapidly falling car until it stops, and then utilizes the cooperation of multiple reset springs to prevent the placement block from sliding out of the placement slot, and then utilizes the cooperation of the limit block and two buffer pads to reduce the impact force of the placement block on the telescopic end of the electric cylinder when resetting;

[0025] 3. The present invention can realize the smooth lifting operation of the car by setting up a lifting mechanism, that is, it can realize the movement of construction personnel and construction materials from a low place to a high place in the building. When it is necessary to move the construction personnel and construction materials at a low place to a high place in the building, the elevator controller, the traction machine with positive rotation at the output end, the first traction wheel, the mounting seat, the two second traction wheels, the auxiliary frame, the auxiliary platform, the two fixed blocks, the counterweight, the mounting seat, a plurality of traction steel ropes, the elevator frame, the two groups of car frames and the car frame can be used to realize the smooth upward movement of the car. At the same time, the cooperation of the upward moving car frame can realize the synchronous movement of the auxiliary mechanism, the brake, the connecting block and the casing.

[0026] 4. In the present invention, when the casing moves, the speed limiting rope can be driven by directly utilizing the cooperation of the moving casing, the auxiliary seat, the third traction wheel and the speed limiter. When the construction personnel and the construction materials move up to a suitable height, the traction machine can be paused by utilizing the cooperation of the motor controller. When the construction personnel need to move down from a high place to a low place, the car can be moved down from a high place by utilizing the cooperation of the motor controller, the traction machine with the output end reversed and the previous linkage components.

[0027] 5. The present invention can reduce the speed of a rapidly falling car until it stops by arranging a protective mechanism, and can also utilize a spring buffer to buffer the impact force brought by the falling car, that is, it can greatly protect the construction personnel inside the car. When the traction wire rope of the building construction elevator breaks during use and the car falls rapidly, the downward-moving car frame can utilize the cooperation of the connecting block, the sleeve, the auxiliary seat, the third traction wheel and the speed limiting rope to realize rapid rotation of the speed limiter. When the rotation speed of the speed limiter reaches a certain value, the speed limiter can be used to prevent the speed limiting rope from being transmitted, and then the brake can be automatically started by utilizing the cooperation of the speed limiting rope, the sleeve and the connecting block that stop the transmission, that is, the cooperation of the started brake can realize the reduction of the speed of the rapidly falling car until it stops.

[0028] 6. The present invention simultaneously utilizes the cooperation of one end of the rotating shaft of one of the braking ends of the activated brake to realize the linkage of some components of the auxiliary mechanism. When the speed of the car is reduced, but it is still moving downward and contacts the tops of multiple spring buffers, the cooperation of multiple spring buffers can be utilized to buffer the impact force of the rapidly falling car, thereby protecting the construction personnel inside the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a safety protection device for a building construction elevator according to the present invention;

[0030] Figure 2It is a partial three-dimensional diagram of a safety protection device for a building construction elevator of the present invention;

[0031] Figure 3 It is a three-dimensional view from another angle of a safety protection device for a building construction elevator of the present invention;

[0032] Figure 4 It is a partial three-dimensional diagram from a top view of a safety protection device for a building construction elevator according to the present invention;

[0033] Figure 5 It is a three-dimensional diagram of the auxiliary mechanism part of a building construction elevator safety protection device of the present invention;

[0034] Figure 6 It is a schematic cross-sectional structural diagram of the auxiliary mechanism of a building construction elevator safety protection device of the present invention;

[0035] Figure 7 A partially cutaway perspective view of a safety protection device for a building construction elevator according to the present invention;

[0036] Figure 8 A three-dimensional diagram of the counterweight of a safety protection device for a building construction elevator according to the present invention;

[0037] Fig. 9 A partially cutaway perspective view of a lifting mechanism of a building construction elevator safety protection device of the present invention;

[0038] Fig.10 A three-dimensional diagram of a spring buffer of a building construction elevator safety protection device of the present invention;

[0039] Fig.11 It is a partial three-dimensional view from another angle of a safety protection device for a building construction elevator of the present invention;

[0040] Fig.12 A safety protection device for a building construction elevator according to the present invention Figure 1 The enlarged stereogram at A in the middle;

[0041] Fig.13 A safety protection device for a building construction elevator according to the present invention Figure 1 The enlarged stereogram at B in the middle;

[0042] Fig.14 A safety protection device for a building construction elevator according to the present invention Figure 7 Enlarged stereogram at center C.

[0043] In the figure:

[0044] 1. Lifting mechanism; 101. Elevator frame; 102. Mounting seat; 103. Traction machine; 104. First traction sheave; 105. Counterweight; 106. Car frame; 107. Car frame; 108. Second traction sheave; 109. Auxiliary platform; 110. Auxiliary frame; 111. Traction wire rope; 112. Fixed block; 113. Car; 2. Protection mechanism; 201. Spring buffer; 202. Auxiliary seat; 203. Third traction sheave; 204. Speed ​​limiter ; 205, speed limit rope; 206, brake; 207, connecting block; 208, sleeve; 3, auxiliary mechanism; 301, L-shaped block; 302, electric cylinder; 303, return spring; 304, rectangular block; 305, sliding hole; 306, slider; 307, placement groove; 308, placement block; 309, limit block; 310, buffer pad; 311, single hole block; 312, rotating rod; 313, rectangular groove; 314, tooth plate; 315, gear. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Reference Figure 1-Figure 14 As shown: A safety protection device for a building construction elevator comprises a lifting mechanism 1, a protection mechanism 2 is arranged on the lifting mechanism 1, an auxiliary mechanism 3 is arranged on the protection mechanism 2, the auxiliary mechanism 3 comprises an L-shaped block 301, an electric cylinder 302 is installed on one side of the L-shaped block 301, a rectangular block 304 is arranged on one side of the L-shaped block 301, a sliding hole 305 is opened on one side of the rectangular block 304, a sliding block 306 is arranged inside the sliding hole 305, a plurality of return springs 303 are fixed on the side of the sliding block 306 close to the L-shaped block 301, and a placement groove is opened on the top of the rectangular block 304 307, a placement block 308 is arranged inside the placement groove 307, a limit block 309 is fixed on one side of the slider 306, a buffer pad 310 is bonded and connected to the surface of the limit block 309, a single-hole block 311 is fixed to the front surface of the rectangular block 304 and the rear surface of the rectangular block 304, a rotating rod 312 is rotatably connected between the two single-hole blocks 311 through a bearing, a plurality of rectangular grooves 313 are opened on the top of the placement block 308, a tooth plate 314 is fixed inside each rectangular groove 313, and a plurality of gears 315 are fixedly sleeved on the outer surface of each rotating rod 312.

[0047] like Figure 2 , Figure 5 , Figure 6 , Fig.11 and Fig.14As shown, the fixed end of the electric cylinder 302 movably passes through one side of the L-shaped block 301, the same end of multiple return springs 303 is fixed to the surface of the L-shaped block 301, the top of the inner wall of the sliding hole 305 is connected to the bottom of the inner wall of the placement groove 307, the top of the slider 306 is fixed to the bottom of the placement block 308, one side of the rectangular block 304 is in contact with the surface of the two buffer pads 310, the teeth of each gear 315 are respectively meshed with the teeth of each tooth plate 314, and the telescopic end of the electric cylinder 302 is slidably embedded in the surface of the placement block 308, so that the placement block 308 can be pushed to move under the cooperation of the electric cylinder 302 and the L-shaped block 301.

[0048] like Figure 1 , Figure 3 , Figure 4 , Figure 7-Figure 9 and Figure 11-Figure 14 As shown, the lifting mechanism 1 includes an elevator frame 101, a mounting seat 102 is fixed on the top of the elevator frame 101, a traction machine 103 is installed on the upper side of the mounting seat 102, a first traction wheel 104 is installed on the output end of the traction machine 103, two groups of car frames 106 are fixed inside the elevator frame 101, a counterweight 105 is slidably connected between the outer surfaces of one group of car frames 106, and a car frame 107 is slidably connected between the outer surfaces of the other group of car frames 106, and two second traction wheels 108 are rotatably connected to the top groove of the car frame 107. With the cooperation of the two second traction wheels 108, the first traction wheel 104, the auxiliary frame 110, the auxiliary platform 109, the two fixed blocks 112, the traction machine 103, the counterweight 105, the mounting seat 102, a plurality of traction steel ropes 111, the elevator frame 101, the two groups of car frames 106 and the car frame 107, a smooth lifting operation of the car 113 can be achieved.

[0049] like Figure 1 , Figure 3 , Figure 4 , Figure 7-Figure 9 and Figure 12-14 As shown, an auxiliary platform 109 and an auxiliary frame 110 are fixed on the top of the elevator frame 101, and a plurality of traction steel ropes 111 are transmission-connected between the outer surface grooves of the auxiliary frame 110, the outer surface grooves of the first traction wheel 104, and the outer surface grooves of the two second traction wheels 108. One end of each traction steel rope 111 movably passes through the top mounting end of the counterweight 105, so that under the action of the counterweight 105, the load of the traction machine 103 can be reduced, the energy consumption can be reduced, and the stability of the car 113 during lifting and lowering can be facilitated.

[0050] like Figure 1 , Figure 3 , Figure 4 , Figure 7 , Fig. 9 and Figure 12-14As shown, the other end of each traction wire rope 111 is movably inserted through the outer surface of the auxiliary platform 109, and one end of each traction wire rope 111 is movably sleeved between multiple wire holes on the top of the elevator frame 101. A fixing block 112 is fixed between one end of the multiple traction wire ropes 111 and between the other ends of the multiple traction wire ropes 111. Under the action of the fixing block 112, one end of the traction wire rope 111 can be prevented from moving out from the top installation end of the counterweight 105, and the other end of the traction wire rope 111 can also be prevented from moving out from the auxiliary platform 109.

[0051] like Figure 1-Figure 9 and Figure 11-Figure 14 As shown, the top of one of the fixed blocks 112 contacts the mounting end surface of the counterweight 105, the bottom of the other fixed block 112 contacts the surface of the auxiliary platform 109, a car 113 is fixed inside the car frame 107, and the L-shaped block 301 and the rectangular block 304 are both fixed on the upper side of the car 113, so that the lifting and lowering operations of construction personnel and construction materials can be realized under the action of the car 113.

[0052] like Figure 1 , Figure 3 , Figure 4 , Figure 7 , Fig. 9 , Fig.10 and Figure 12-14 As shown, the protection mechanism 2 includes a plurality of spring buffers 201, each of which is installed at the bottom of the inner wall of the elevator frame 101, an auxiliary seat 202 is fixed to the bottom of the inner wall of the elevator frame 101, and the shaft end of the auxiliary seat 202 is rotatably connected to the third traction wheel 203, and a speed limiter 204 is installed on the top of the elevator frame 101. The speed limiter 204, the speed limiting rope 205, the third traction wheel 203, the auxiliary seat 202, the sleeve 208, the connecting block 207, the brake 206, and a corresponding set of car frames 106 and car frames 107 can prevent the car 113 from falling.

[0053] like Figure 1-Figure 4 , Figure 7 , Fig. 9 and Figure 11-Figure 14 As shown, a speed limiting rope 205 is transmission-connected between the speed limiter 204 and the third traction wheel 203, a brake 206 is installed between the two ends of the top of the car frame 107, and two car frames 106 of another group are respectively located between the two braking ends of the brake 206. A connecting block 207 is fixedly sleeved on the outer surface of the rotating shaft of one of the braking ends of the brake 206, and a sleeve 208 is fixedly sleeved on the outer surface of the speed limiting rope 205, so that the speed limiting rope 205 and the brake 206 can be connected together with the cooperation of the sleeve 208 and the connecting block 207.

[0054] like Figure 1-Figure 5 , Figure 7 and Figure 10-Figure 14 As shown, the connecting end of the connecting block 207 is rotatably connected to the sleeve 208, one end of the rotating shaft of one of the braking ends of the brake 206 is fixed to the end of the rotating rod 312 close to the connecting block 207, and the speed limiting rope 205 is movably sleeved inside the top square hole of the elevator frame 101. Each spring buffer 201 is directly below the car 113. Under the action of the spring buffer 201, the impact force of the rapid fall of the car 113 can be reduced.

[0055] In the present invention, when the elevator is needed for building construction, the elevator controller and controller (to control the opening and closing of the electric cylinder 302) prepared in advance are first installed inside the car 113, and then the elevator controller and the controller are connected to the external power supply through the prepared power supply, and then the traction machine 103 and the motor controller are connected together with a wire, and then the electric cylinder 302 and the controller are connected together with another wire. When it is necessary to move the construction workers and construction materials at a low position to a high position of the building, the construction workers are directly asked to put the construction materials into the car 113, and then the construction workers can use the cooperation of the elevator controller to start the traction machine 103 and let the output end of the traction machine 103 rotate forward. At this time, the started traction machine 103 will be installed at the installation site. The first traction wheel 104 connected thereto is driven to rotate with the cooperation of the two second traction wheels 108, the auxiliary frame 110, the auxiliary platform 109, the two fixed blocks 112, the traction machine 103, the counterweight 105, the mounting seat 102, the plurality of traction steel wire ropes 111, the elevator frame 101, the two sets of car frames 106 and the car frame 107, so that the car 113 moves upward smoothly. At the same time, the moving car frame 107 will also drive the auxiliary mechanism 3, the brake 206, the connecting block 207 and the sleeve 208 to move. When the sleeve 208 moves, the moving sleeve 208 will drive the speed limit rope 205 with the cooperation of the auxiliary seat 202, the third traction wheel 203 and the speed limiter 204. When the construction workers and construction materials move up to a suitable height, the motor controller will pause the traction machine 103, and the construction workers can then move the construction materials out of the car 113. When the construction workers need to move down from a high place to a low place, the motor controller is used to start the traction machine 103, and the output end of the traction machine 103 is reversed. At this time, the started traction machine 103 will move the car 113 down from a high place with the cooperation of the previous linkage components. When the traction wire rope 111 breaks during the use of the building construction elevator, the car 113 falls rapidly, and the rapidly falling car 113 will also drive the car frame 107 to move down. At the same time, the moving car frame 107 will also be connected to the connecting block 207, the sleeve 208, the auxiliary seat 202, and the third traction wheel 203. With the cooperation of the speed limit rope 205, the speed limiter 204 is driven to rotate rapidly. When the rotation speed of the speed limiter 204 reaches a certain value, the flyweight in the speed limiter 204 will be displaced under the action of centrifugal force. When the flyweight clamping end inside the speed limiter 204 is clamped on the comb teeth inside the speed limiter 204, the speed limit rope 205 will stop transmitting. At this time, the speed limit rope 205 that has stopped transmitting will automatically start the brake 206 with the cooperation of the sleeve 208 and the connecting block 207. Subsequently, one end of the rotating shaft of one of the braking ends of the brake 206 that is started will drive the rotating rod 312 to rotate with the cooperation of the rectangular block 304, the two single-hole blocks 311 and the bearing, and the rotating rotating rod 312 will simultaneously drive the multiple gears 315 connected thereto to rotate.When the plurality of gears 315 rotate at the same time, each of the rotating gears 315 will drive the meshing tooth plate 314 to move away from the L-shaped block 301 under the cooperation of the placement groove 307 and the placement block 308. At the same time, the moving placement block 308 will drive the slider 306 to move inside the slide hole 305. At the same time, the moving placement block 308 will also separate from the telescopic end of the electric cylinder 302. At the same time, the moving slider 306 will also drive the limit block 309 and the buffer pad 310 bonded to the limit block 309 to move, so that the plurality of return springs 303 connected thereto are stretched, and the two ends of the brake 206 that are activated at the same time are activated. Each brake end will hold the corresponding group of car frames 106, that is, the brake 206, the corresponding group of car frames 106 and the car frame 107 cooperate to reduce the speed of the rapidly falling car 113 until it stops (stops midway), that is, to protect the construction personnel inside the car frame 107. If the speed of the car 113 is reduced (the speed is within a safe range), but it is still moving down and contacts the tops of the multiple spring buffers 201, the impact force of the rapidly falling car 113 can be buffered under the action of the multiple spring buffers 201, thereby protecting the construction personnel inside the car 113. When a fault occurs, the car 113 falls rapidly and the speed limiter 204 cannot be used normally, the brake 206 cannot be automatically activated. At this time, the construction personnel can click the start button on the controller, that is, use the controller to start the electric cylinder 302. When the electric cylinder 302 is started, the started electric cylinder 302 will push the placement block 308 to move inside the placement groove 307 with the cooperation of the L-shaped block 301, and the moving placement block 308 will drive the rotating rod 312 to rotate with the cooperation of multiple tooth plates 314, rectangular blocks 304, two single-hole blocks 311, bearings and multiple gears 315. When the rotating rod 312 rotates, the brake The brake 206 can be started, that is, the brake 206, a corresponding set of car frames 106 and car frames 107 are used to reduce the speed of the rapidly falling car 113 until it stops. At the same time, the moving placement block 308 will also drive the slider 306 to move with the cooperation of the sliding hole 305, and the multiple return springs 303 connected thereto will also be stretched, that is, the cooperation of the multiple return springs 303 can prevent the placement block 308 from sliding out of the placement groove 307. At the same time, the cooperation of the limit block 309 and the two buffer pads 310 can reduce the impact force of the placement block 308 on the telescopic end of the electric cylinder 302 when it is reset.

[0056] The counterweight 105 is composed of a plurality of counterweight blocks, a counterweight block placement rack, a porous plate (the top mounting end of the counterweight 105 ), etc.;

[0057] The spring buffer 201 is composed of a spring body, a buffer seat, a limit rod, a connecting piece and a limit plate;

[0058] The speed governor 204 is composed of a speed governor wheel, a centrifugal device and an adjustment device;

[0059] The brake 206 is composed of brake shoes, a driving mechanism, an adjustment device and a spring device.

[0060] Among them, the elevator frame 101, the traction machine 103, the counterweight 105, the car 113, the spring buffer 201, the speed limiter 204, the brake 206 and the electric cylinder 302 are all existing technologies, and their models can be selected according to actual conditions, and no excessive explanation is given here.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A safety protection device for a building construction elevator, comprising a lifting mechanism (1), characterized in that: The lifting mechanism (1) is provided with a protection mechanism (2), and the protection mechanism (2) is provided with an auxiliary mechanism (3); The auxiliary mechanism (3) comprises an L-shaped block (301), an electric cylinder (302) is installed on one side of the L-shaped block (301), a rectangular block (304) is arranged on one side of the L-shaped block (301), a sliding hole (305) is opened on one side of the rectangular block (304), a slider (306) is arranged inside the sliding hole (305), a plurality of return springs (303) are fixed on the side of the slider (306) close to the L-shaped block (301), a placement groove (307) is opened on the top of the rectangular block (304), a placement block (308) is arranged inside the placement groove (307), a limit block (309) is fixed on one side of the slider (306), a buffer pad (310) is bonded to the surface of the limit block (309), a single-hole block (311) is fixed on the front surface and the rear surface of the rectangular block (304), and a bearing is rotated between the insides of the two single-hole blocks (311). The placing block (308) is movably connected to a rotating rod (312), a plurality of rectangular grooves (313) are provided on the top of the placing block (308), a tooth plate (314) is fixed inside each of the rectangular grooves (313), a plurality of gears (315) are fixedly sleeved on the outer surface of each of the rotating rods (312), a fixed end of the electric cylinder (302) movably passes through one side of the L-shaped block (301), and the same end of the plurality of return springs (303) is fixedly connected to the surface of the L-shaped block (301). The top of the inner wall of the sliding hole (305) is connected to the bottom of the inner wall of the placement groove (307), the top of the sliding block (306) is fixed to the bottom of the placement block (308), one side of the rectangular block (304) is in contact with the surfaces of two buffer pads (310), the teeth of each gear (315) are respectively meshed with the teeth of each tooth plate (314), and the telescopic end of the electric cylinder (302) is slidably embedded in the surface of the placement block (308); The lifting mechanism (1) comprises an elevator frame (101), a mounting seat (102) is fixed on the top of the elevator frame (101), a traction machine (103) is installed on the upper side of the mounting seat (102), a first traction wheel (104) is installed on the output end of the traction machine (103), two groups of car frames (106) are fixed inside the elevator frame (101), a counterweight (105) is slidably connected between the outer surfaces of one group of car frames (106), a car frame (107) is slidably connected between the outer surfaces of the other group of car frames (106), two second traction wheels (108) are rotatably connected at the top groove of the car frame (107), an auxiliary platform (109) and an auxiliary frame (110) are fixed on the top of the elevator frame (101), and the outer surface grooves of the auxiliary frame (110), the outer surface grooves of the first traction wheel (104) and the outer surface grooves of the two second traction wheels (108) are A plurality of traction steel wire ropes (111) are connected for transmission between the elevator frame (101), one end of each traction steel wire rope (111) movably passes through the top mounting end of the counterweight (105), the other end of each traction steel wire rope (111) movably passes through the outer surface of the auxiliary platform (109), one end of each traction steel wire rope (111) movably sleeved between a plurality of wire holes at the top of the elevator frame (101), a fixing block (112) is fixed between one end of the plurality of traction steel wire ropes (111) and between the other ends of the plurality of traction steel wire ropes (111), the top of one of the fixing blocks (112) contacts the mounting end surface of the counterweight (105), and the bottom of another fixing block (112) contacts the surface of the auxiliary platform (109), a car (113) is fixed inside the car frame (107), and the L-shaped block (301) and the rectangular block (304) are fixed on the upper side of the car (113); The protection mechanism (2) comprises a plurality of spring buffers (201), each of the spring buffers (201) being mounted at the bottom of the inner wall of the elevator frame (101), an auxiliary seat (202) being fixed at the bottom of the inner wall of the elevator frame (101), a rotating shaft end of the auxiliary seat (202) being rotatably connected to a third traction wheel (203), a speed limiter (204) being mounted at the top of the elevator frame (101), a speed limiter rope (205) being transmission-connected between the speed limiter (204) and the third traction wheel (203), a brake (206) being mounted between the two ends of the top of the car frame (107), and two car frames (106) of another group being respectively Located between the two braking ends of the brake (206), a connecting block (207) is fixedly sleeved on the outer surface of the rotating shaft of one of the braking ends of the brake (206), a sleeve (208) is fixedly sleeved on the outer surface of the speed limiting rope (205), the connecting end of the connecting block (207) is rotatably connected to the sleeve (208), one end of the rotating shaft of one of the braking ends of the brake (206) is fixed to an end of the rotating rod (312) close to the connecting block (207), the speed limiting rope (205) is movably sleeved inside the top square hole of the elevator frame (101), and each of the spring buffers (201) is located directly below the car (113).

2. A method for using a building construction elevator safety protection device, characterized in that: The building construction elevator safety protection device according to claim 1 is used, comprising the following steps: S1. When construction workers and construction materials at a lower location need to be moved to a higher location in a building, the first traction wheel (104) is first rotated forward by using the cooperation of the elevator controller prepared in advance, the traction machine (103) with a forward rotation at the output end, and the mounting seat (102). Then, the first traction wheel (104) with a forward rotation, the two second traction wheels (108), the auxiliary frame (110), the auxiliary platform (109), the two fixed blocks (112), the counterweight (105), the mounting seat (102), the plurality of traction steel wire ropes (111), the elevator frame (101), the two sets of car frames (106), and the car frame (107) are cooperated to allow the car (113) to move upward smoothly. S2, while using the cooperation of the upwardly moving car frame (107), the auxiliary mechanism (3), the brake (206), the connecting block (207) and the sleeve (208) are moved synchronously. When the sleeve (208) moves, the moving sleeve (208), the auxiliary seat (202), the third traction wheel (203) and the speed limiter (204) are used to drive the speed limit rope (205). When it is necessary to move the construction workers and construction materials at a high place to a lower part of the building, the elevator controller prepared in advance, the traction machine (103) with the reverse output end and the previously linked components are used to move the car (113) from a high place to a low place; S3, when the traction wire rope (111) of the building construction elevator is broken during use and the car (113) falls rapidly, the speed limiter (204) is rotated rapidly by utilizing the cooperation of the falling car (113), the connecting block (207), the sleeve (208), the auxiliary seat (202), the third traction wheel (203) and the speed limiter rope (205). When the speed limiter (204) rotates at a certain speed, the speed limiter (204) stops the transmission of the speed limiter rope (205); S4, then using the cooperation of the speed limit rope (205) that stops transmission, the sleeve (208) and the connecting block (207) to automatically start the brake (206), and then using the started brake (206) to reduce the speed of the rapidly falling car (113) until it stops. When the speed of the car (113) is reduced but it is still moving downward and contacts the top of the plurality of spring buffers (201), the plurality of spring buffers (201) are used to buffer the impact force of the rapidly falling car (113); S5. When a malfunction occurs during use of the building construction elevator, the car (113) falls rapidly and the speed limiter (204) cannot be used normally, the controller for controlling the opening and closing of the electric cylinder, the electric cylinder (302) and the L-shaped block (301) prepared in advance are used in cooperation to push the placement block (308) to move inside the placement groove (307), and then the moving placement block (308), the plurality of tooth plates (314), the rectangular block (304), the two single-hole blocks (311), the bearing and the plurality of gears (315) are used in cooperation to drive the rotating rod (312) to rotate, and then the rotating rotating rod (312) is used to activate the brake (206), and then the activated brake (206) and the corresponding group of car frames (106) and car frames (107) are used in cooperation to reduce the speed of the falling car (113) until it stops moving.

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