Elevator safety protection device for engineering construction

Abstract

The invention relates to the technical field of lifters, and discloses a safety protection device of a lifter for engineering construction. The problem that gear loads are prone to being damaged due to instant impact when cargoes are loaded and unloaded in a compartment is solved. Comprising a guide rail frame, a rack rail and a plurality of fixing blocks are installed on the guide rail frame, a lift car is arranged on one side of the guide rail frame, the lift car is rotationally connected with a plurality of gear discs, and the gear discs are in meshing transmission with the rack rail; and the two sliding plates are both connected to the lift car in a sliding mode, sliding blocks are connected to the sliding plates in a sliding mode, and the sliding blocks are connected with supporting rods which are in extrusion fit with the adjacent fixing blocks in a sliding mode and used for dispersing acting force acting on the gear disc. Through interaction of the supporting rods and the fixing blocks, instant impact generated by loading and unloading cargos in the lift car is dispersed and acts on the two fixing blocks, the additional load borne by the sliding plate is reduced, the possibility of damage to the sliding plate is reduced, and the use safety of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of elevators and discloses an elevator safety protection device for engineering construction. Background Art

[0002] Construction lifts are widely used in construction sites, warehouses, factories and other places. They are mainly used to transport workers and goods to floors at different heights safely and efficiently. This type of lift usually achieves vertical transportation by moving the carriage along the guide rails, and the power is provided by the motor through a rack and pinion drive system.

[0003] During the operation of the elevator, the elevator car will hover at a specific position corresponding to the floor to facilitate the entry and exit of staff or goods. However, during this process, if goods are moved in or out of the car, the car will be subjected to instantaneous impact force, causing the car to shake up and down in a short period of time. This shaking will not only affect the safety and stability of the operation, but also cause the gears to rotate slightly, causing the motor and gears to bear additional loads, increasing the possibility of damage, and affecting the construction progress and staff safety. Summary of the invention

[0004] With regard to the problem that gear loads are easily damaged due to instantaneous impact when loading and unloading goods in a carriage, the present invention provides a safety protection device for an elevator used in engineering construction.

[0005] The technical solution of the present invention is: a safety protection device for an engineering construction elevator, comprising: a guide rail frame, a rack and a plurality of fixed blocks are installed on the guide rail frame, a car is arranged on one side of the guide rail frame, the car is slidably connected to the guide rail frame through a guide wheel, the car is rotatably connected to a plurality of gear plates, and the gear plates are meshed with the rack; two sliding plates are both slidably connected to the car, a slider is slidably connected to the sliding plate, and the slider is slidably connected to a support rod that is extruded and matched with the adjacent fixed blocks for dispersing the force acting on the gear plates; a power mechanism is arranged on the gear plates for controlling the timing of the car to hover; two positioning mechanisms are respectively arranged on the corresponding sliding plates for positioning the car to be hovered; two stabilizing mechanisms are respectively arranged on the corresponding sliding plates for keeping the car stable during the accelerated movement.

[0006] As a preferred embodiment of the present invention, the power mechanism includes: multiple motors, the number of which is the same as the number of the gear plates, and the output shafts of the motors are transmitted to the gear plates through a reducer; two first electric push rods, both arranged on the car, and the telescopic ends of the first electric push rods are fixedly connected to the sliding plate for controlling the movement of the support rod and cooperating with the fixed block to support the car.

[0007] As a preferred embodiment of the present invention, the positioning mechanism includes: a detection rod, slidably connected to the sliding plate, a spring fixedly connected between the detection rod and the sliding plate, and a rack fixedly connected to the detection rod and the sliding block; a transmission gear, rotatably connected to the sliding plate, the rack meshing with the transmission gear, and the rack on the detection rod and the rack on the sliding block are transmitted through the transmission gear, so as to make the detection rod and the support rod move alternately.

[0008] As a preferred embodiment of the present invention, the moving distance of the sliding plate is equal to the moving distance of the supporting rod, which is used to control the contact state between the supporting rod and the fixing block.

[0009] As a preferred embodiment of the present invention, the detection rod is provided with two inclined surfaces which are mirror images of each other, the inclined surfaces of the detection rod are squeezed together with the fixed block, and the maximum distance between the two facing ends of the two detection rods is equal to the distance between the two opposite ends of the fixed blocks on the same horizontal plane, so that the detection rod can position the fixed block during the up and down movement of the car.

[0010] As a preferred embodiment of the present invention, the stabilizing mechanism includes: a sliding shell, slidably connected to the sliding plate, a sliding rod is arranged in the sliding shell, the sliding rod is slidably connected to a connecting rod, a spring is fixed between the connecting rod and the sliding rod; a swing rod, rotatably connected to the upper side of the connecting rod, a torsion spring is arranged at the rotation connection between the connecting rod and the swing rod, and the swing rod is extruded and fitted with the guide rail frame; a control component is arranged on the slider, and is used to control the support rod and the sliding shell to move in reverse; a limit component is arranged in the connecting rod, and is used to temporarily hinder the relative rotation of the connecting rod and the swing rod.

[0011] As a preferred embodiment of the present invention, the control component includes: the second electric push rod, which is fixed to the slider, and the telescopic end of the second electric push rod is fixed to the support rod, which is used to actively release the supporting state of the fixed block on the car; a fixed cylinder, which is fixed to the slider, and the fixed cylinder is sealed and slidably connected to the support rod, the fixed cylinder is connected to a liquid guide tube, the sliding plate is fixed to a first hydraulic cylinder, the first hydraulic cylinder is connected to the liquid guide tube, the telescopic end of the first hydraulic cylinder is fixed to the sliding shell, and the fixed cylinder, the liquid guide tube and the first hydraulic cylinder are all filled with hydraulic oil.

[0012] As a preferred embodiment of the present invention, the limit assembly includes: a sliding support rod, which is slidably connected in the connecting rod, and the sliding support rod is squeezed and matched with the sliding rod; a limit block, which is slidably connected to the upper part of the connecting rod, and a groove is provided at the rotation part of the swing rod, and the limit block is limited and matched with the groove of the swing rod, a spring is fixed between the limit block and the connecting rod, and the sliding support rod and the limit block are connected by a pull rope.

[0013] As a preferred embodiment of the present invention, it also includes: two protection mechanisms, both of which are arranged on the car, for hindering the movement of the car when it slides down quickly, the protection mechanism includes: a speed measuring device, fixedly connected to the car, the speed measuring device is in contact with the guide rail frame, and the speed measuring device is connected to a guide pipe; a second hydraulic cylinder, fixedly connected to the sliding shell, the sliding shell is slidably connected to the sliding rod, the second hydraulic cylinder is connected to the guide pipe, the telescopic end of the second hydraulic cylinder is fixedly connected to a limit bending rod, a spring is fixedly connected between the sliding shell and the sliding rod, and the limit bending rod is connected to the guide pipe. The rod is slidably connected to the sliding shell, a blind hole is provided on the sliding rod, and the limit bending rod is limitedly matched with the blind hole on the sliding rod to control the relative sliding of the sliding shell and the sliding rod; the third hydraulic cylinder is fixedly connected to the connecting rod, the third hydraulic cylinder is communicated with the guide pipe, a blind hole is provided on the limit block, and the telescopic end of the third hydraulic cylinder is limitedly matched with the blind hole on the limit block to lock the relative position of the connecting rod and the swing rod, and the speed measuring device, the guide pipe, the second hydraulic cylinder and the third hydraulic cylinder are all filled with hydraulic oil.

[0014] As a preferred embodiment of the present invention, the relative sliding distance between the sliding shell and the sliding rod is equal to the sum of the moving distance of the sliding plate and the moving distance of the sliding shell, so that the swing rod actively approaches the guide rail frame when the car stalls, thereby locking the movement of the car.

[0015] Compared with the prior art, the present invention has the following advantages: 1. Through the interaction between the support rod and the fixed block, the instantaneous impact of the cargo on and off the car is dispersed onto the two fixed blocks, reducing the additional load on the sliding plate, reducing the possibility of damage to the sliding plate, and improving the safety of the device.

[0016] 2. The present invention uses the contact and extrusion between the swing rod and the guide rail frame in the stabilizing mechanism to make the car subject to a balanced pulling force during initial acceleration, thereby reducing the vibration of the car caused by acceleration and ensuring the stability of the car operation.

[0017] 3. The present invention detects the movement state of the car through the speed measuring device in the protection mechanism. When the car stalls, the swing rod is controlled to actively approach the guide rail frame to perform buffer braking on the car to ensure the safety of the goods and staff in the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the car in the suspended state of the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the parts of the car and the gear plate of the present invention;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the parts at the fixing block and the supporting rod of the present invention;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the parts of the second electric push rod and the fixed cylinder of the present invention;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the parts of the liquid guide tube and the first hydraulic cylinder of the present invention;

[0024] Figure 7 It is a cross-sectional view of the parts of the sliding shell and the sliding rod of the present invention;

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the inner structure of the connecting rod of the present invention;

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the parts at the connecting rod and the swing rod of the present invention.

[0027] Numbers in the accompanying drawings: 1-guide rail frame, 2-fixed block, 3-tooth rail, 4-car, 5-gear plate, 6-sliding plate, 7-sliding block, 8-support rod, 201-motor, 202-first electric push rod, 301-detection rod, 302-rack, 303-transmission gear, 401-sliding shell, 402-sliding rod, 403-connecting rod, 404-swing rod, 501-second electric push rod, 502-fixed cylinder, 503-liquid guide tube, 504-first hydraulic cylinder, 601-sliding support rod, 602-limiting block, 701-speed measuring device, 702-guide tube, 703-second hydraulic cylinder, 704-limiting bending rod, 705-third hydraulic cylinder. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Fig. 9 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments 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 those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] Example 1: During the operation of the elevator, if the elevator car hovers at a set floor, when goods are moved in or out of the car, the car will be subjected to instantaneous impact force, causing the car to shake up and down in a short period of time, and the gears to rotate slightly, causing the gears to bear additional loads, reducing the service life of the gears and threatening the lives of the staff.

[0030] A safety protection device for construction lifts, please refer to the attached Figure 1 -Attached Figure 6 As shown, it includes: a guide rail frame 1, on which a rack 3 and a plurality of fixed blocks 2 are installed, a car 4 is arranged on one side of the guide rail frame 1, the car 4 is slidably connected to the guide rail frame 1 through a guide wheel, the car 4 is rotatably connected to a plurality of gear plates 5, and the gear plates 5 are meshed with the rack 3; two sliding plates 6, both slidably connected to the car 4, the sliding plates 6 are slidably connected to the sliders 7, the sliders 7 are slidably connected to the support rods 8 that are pressed and matched with the adjacent fixed blocks 2, and are used to disperse the force acting on the gear plates 5; a power mechanism is arranged on the gear plates 5, and is used to control the timing of the car 4 to hover; two The positioning mechanisms are respectively arranged on the corresponding sliding plates 6, and are used to locate the position of the car 4 to be suspended; the two stabilizing mechanisms are respectively arranged on the corresponding sliding plates 6, and are used to keep the car 4 stable during the accelerated movement. The power mechanism includes: multiple motors 201, the number of which is the same as the number of gear plates 5, and the output shaft of the motor 201 and the gear plate 5 are transmitted through a reducer; two first electric push rods 202 are both arranged on the car 4, and the telescopic ends of the first electric push rods 202 are fixedly connected to the sliding plate 6, which are used to control the movement of the support rod 8 and cooperate with the fixed block 2 to support the car 4.

[0031] In the above scheme, the purpose is to solve the problem that the up and down transportation of goods when the car 4 is suspended will produce an instantaneous impact on the car 4, causing the sliding plate 6 to be subjected to excessive pressure, resulting in the motor 201 being easily damaged due to excessive load, threatening the life safety of the staff. A control panel (not shown in the figure) is arranged in the car 4, the motor 201, the first electric push rod 202 and the stabilizing mechanism are all electrically connected to the control panel, the distance between two adjacent fixed blocks 2 in the vertical direction of the guide rail frame 1 is equal to the distance between two adjacent floors on the construction building, so that the car 4 is facing the floor when it is suspended through the fixed block 2, the number of fixed blocks 2 is twice the number of floors, the number of gear plates 5 is three and is evenly distributed vertically, the gear plate 5 drives the car 4 to move up and down through the rack 3, and the support rod 8 does not come into contact with any fixed block 2 before the car 4 moves to the set floor, and at the same time, the guide wheels on the car 4 do not come into contact with any fixed block 2.

[0032] Workflow: First, the staff starts the three motors 201 through the control panel. The three motors 201 all drive the gear plate 5 to rotate through the reducer. The gear plate 5 meshes with the rack 3 to drive the car 4 to move upward along the guide rail frame 1. When the car 4 approaches the predetermined floor, the output speed of the motor 201 decreases, the moving speed of the car 4 decreases, and the support rod 8 approaches the fixed block 2 corresponding to the floor. At this time, the control panel starts the two first electric push rods 202. The telescopic end of the first electric push rod 202 extends a fixed length, and the telescopic end of the first electric push rod 202 is extended to a fixed length. The two ends drive the sliding plate 6 to move, and the two sliding plates 6 approach each other. As the car 4 moves upward, the positioning mechanism and the fixed block 2 are squeezed and matched, so that the two support rods 8 approach each other. When the support rods 8 are squeezed and matched with the fixed blocks 2, the control panel turns off the motor 201, and the two fixed blocks 2 provide a certain supporting force for the car 4 to hover through the support rods 8. At this time, the instantaneous impact force of the goods going up and down the car 4 on the gear plate 5 is dispersed on the two fixed blocks 2, reducing the wear of the gear plate 5, effectively protecting the safety of the gear plate 5, and ensuring the life safety of the staff.

[0033] When the cargo is transported, if the car 4 continues to move upward, the control panel restarts the motor 201, and drives the car 4 to move upward through the gear plate 5 and the rack 3. The control panel controls the telescopic end of the first electric push rod 202 to retract, and the support rod 8 loses contact with the fixed block 2. The positioning mechanism drives the support rod 8 to move and reset, and the gear plate 5 drives the car 4 to continue to move upward. When the car 4 reaches the set floor, the above-mentioned car 4 hovering operation is repeated. If the car 4 moves downward, the control panel releases the contact between the support rod 8 and the fixed block 2 through the stabilizing mechanism, and the gear plate 5 drives the car 4 to move downward. The pressure at the fixed block 2 is all transferred to the gear plate 5. The stabilizing mechanism adjusts the moving state of the car 4 to make the car 4 move stably. When the car 4 is close to the set position, the above-mentioned car 4 hovering operation is repeated to complete the process of carrying cargo up and down. When the car 4 hovers at different floor positions, it can prevent the instantaneous impact force generated by the up and down cargo from being concentrated on the sliding plate 6, thereby increasing the wear of the sliding plate 6. When the car 4 moves and resets, the parts in the device are restored to their initial states.

[0034] Please refer to the attached Figure 4 -Attached Figure 6As shown, the positioning mechanism includes: a detection rod 301, which is slidably connected to the sliding plate 6, a spring is fixedly connected between the detection rod 301 and the sliding plate 6, and the detection rod 301 and the sliding block 7 are both fixedly connected with a rack 302; a transmission gear 303, which is rotatably connected to the sliding plate 6, and the rack 302 is meshed with the transmission gear 303. The rack 302 on the detection rod 301 and the rack 302 on the sliding block 7 are transmitted through the transmission gear 303, which is used to make the detection rod 301 and the support rod 8 move alternately, and the moving distance of the sliding plate 6 is equal to the moving distance of the support rod 8, which is used to control the contact state of the support rod 8 and the fixed block 2. The detection rod 301 is provided with two inclined surfaces with upper and lower mirror images. The inclined surfaces of the detection rod 301 are squeezed and matched with the fixed block 2. The maximum spacing between the facing ends of the two detection rods 301 is equal to the spacing between the opposite ends of the two fixed blocks 2 on the same horizontal plane, which is used to enable the detection rod 301 to position the fixed block 2 during the up and down movement of the car 4.

[0035] In the above scheme, it is intended to enable the support rod 8 to quickly locate the position of the fixed block 2 corresponding to the set floor, and to contact and squeeze it, so that the impact force of the gear plate 5 being compressed when the car 4 is suspended is dispersed, and the detection rod 301 does not contact any fixed block 2 during the initial movement. Taking the detection rod 301 on the front side as an example, the spacing between the two inclined surfaces of the detection rod 301 gradually decreases from front to back, and the detection rod 301 and the rack 302 on the adjacent support rod 8 are transmitted through the transmission gear 303, so that the detection rod 301 and the support rod 8 move synchronously in opposite directions, and the relative movement distance of the support rod 8 and the slider 7 is equal to the relative movement distance of the detection rod 301 and the support rod 8, which is used to accurately release the contact state of the support rod 8 and the fixed block 2, and control the cooperation state of the support rod 8 and the fixed block 2 through the squeezing cooperation of the detection rod 301 and the fixed block 2, so that the car 4 can be accurately suspended during the movement, so that the instantaneous impact force generated when the goods get on and off the car is dispersed on the two adjacent fixed blocks 2, to prevent the sliding plate 6 from being damaged by the impact force and threatening the life safety of the staff.

[0036] Working process: after the telescopic end of the first electric push rod 202 is extended, as the car 4 moves upward, taking the detection rod 301 on the front side as an example, the upper inclined surface of the detection rod 301 contacts and squeezes the fixed block 2 corresponding to the set floor, the detection rod 301 moves forward and compresses the connected spring, and the detection rod 301 moves the slider 7 backward through the rack 302 and the transmission gear 303, and the slider 7 drives the support rod 8 to move backward synchronously through the stabilizing mechanism, and the support rod 8 contacts and squeezes the fixed block 2. When the support rod 8 completes the support, the cargo handling operation is carried out, and the instantaneous impact force generated by the cargo going up and down the car 4 is dispersed on the two fixed blocks 2 and the gear plate 5. If the car 4 continues to move upward, the gear plate 5 drives the car 4 to move upward, and the support rod 8 loses contact with the fixed block 2. The detection rod 301 moves backward and resets under the elastic force of the connected spring, and the detection rod 301 drives the slider 7 and the support rod 8 to move and reset through the rack 302 and the transmission gear 303. Finally, the telescopic end of the first electric push rod 202 drives the sliding plate 6 to move and reset.

[0037] If the car 4 moves downward, the control panel first drives the support rod 8 to move forward relative to the slider 7 through the stabilizing mechanism, and the support rod 8 loses contact with the fixed block 2. The control panel starts the motor 201 to make the gear plate 5 drive the car 4 to move downward. Subsequently, the detection rod 301 moves and resets under the elastic force of the connected spring, and then the stabilizing mechanism drives the support rod 8 to move and reset. At this point, all parts are reset. When the car 4 moves to the initial position, the above-mentioned hovering operation is repeated, and all parts return to their initial positions.

[0038] Please refer to the attached Figure 4 -Attached Fig. 9As shown, the stabilizing mechanism includes: a sliding shell 401, which is slidably connected to the sliding plate 6, a sliding rod 402 is arranged in the sliding shell 401, the sliding rod 402 is slidably connected to the connecting rod 403, and a spring is fixed between the connecting rod 403 and the sliding rod 402; a swing rod 404, which is rotatably connected to the upper side of the connecting rod 403, a torsion spring is arranged at the rotation connection between the connecting rod 403 and the swing rod 404, and the swing rod 404 is pressed and matched with the guide rail frame 1; a control component, which is arranged on the slider 7, and is used to control the support rod 8 and the sliding shell 401 to move in the opposite direction; a limit component, which is arranged in the connecting rod 403, and is used to temporarily hinder the relative rotation of the connecting rod 403 and the swing rod 404, and the control component includes: a second electric push rod 501, which is fixed to the slider 7, and the telescopic end of the second electric push rod 501 is fixed to the support rod 8, and is used to actively release the support state of the fixed block 2 on the car 4 state; a fixed cylinder 502 is fixedly connected to the slider 7, the fixed cylinder 502 is sealed and slidably connected to the support rod 8, the fixed cylinder 502 is connected to a liquid guide tube 503, the sliding plate 6 is fixedly connected to a first hydraulic cylinder 504, the first hydraulic cylinder 504 is connected to the liquid guide tube 503, the telescopic end of the first hydraulic cylinder 504 is fixedly connected to the sliding shell 401, the fixed cylinder 502, the liquid guide tube 503 and the first hydraulic cylinder 504 are all filled with hydraulic oil, the limiting assembly includes: a sliding support rod 601, which is slidably connected to the connecting rod 403, and the sliding support rod 601 is squeezed and matched with the sliding rod 402; a limiting block 602, which is slidably connected to the upper part of the connecting rod 403, a groove is provided at the rotation part of the swing rod 404, the limiting block 602 is limited and matched with the groove of the swing rod 404, a spring is fixedly connected between the limiting block 602 and the connecting rod 403, and the sliding support rod 601 and the limiting block 602 are connected by a pull rope.

[0039] In the above scheme, the problem that the guide wheel of the car 4 will be worn after long-term use, resulting in a gap between the guide wheel and the guide rail frame 1, causing the car 4 to vibrate when accelerating is solved. The torsion spring between the swing rod 404 and the connecting rod 403 always keeps the two in a vertical state. Initially, the limit block 602 limits the rotation of the swing rod 404, so that the swing rod 404 and the connecting rod 403 are relatively fixed. The second electric push rod 501 is electrically connected to the control panel. There are several beams on the guide rail frame 1. The swing rod 404 is squeezed and matched with the beams of the guide rail frame 1. Taking the swing rod 404 on the front side as an example, initially, the rear side of the swing rod 404 is flush with the rear side of the support rod 8. Only when the support rod 8 is relative to the slider 7 When moving backward, the sliding shell 401 moves in the direction of the guide rail frame 1 and comes into contact with the guide rail frame 1, the connecting rod 403 is located at the rear of the sliding rod 402, and the connecting rod 403 only slides up and down on the sliding rod 402, so that the swing rod 404 is located on the opposite sides of the two connecting rods 403, and the swing rod 404 is located on the upper part of the connecting rod 403. The elastic coefficient of the torsion spring connected to the swing rod 404 is smaller than the elastic coefficient of the spring connected to the connecting rod 403. Initially, the connecting rod 403 and the swing rod 404 are distributed in an L shape as a whole, which is used to form a hook-like shape, and is hung on the guide rail frame 1 to generate a certain pulling force on the car 4, providing the car 4 with a left-right balanced pulling force, so that the car 4 is more stable during the accelerated movement.

[0040] Working process: after the car 4 completes the up and down transportation of goods during the hovering process, if the car 4 is ready to move downward, the control panel starts the two second electric push rods 501. Taking the front second electric push rod 501 as an example, the telescopic end of the second electric push rod 501 contracts and drives the support rod 8 to move forward, the support rod 8 and the slider 7 slide against each other, the two support rods 8 move away from each other, the support rod 8 loses contact with the fixed block 2, and the gravity of the car 4 acts entirely on the gear plate 5. During the movement of the support rod 8, the support rod 8 moves into the fixed cylinder 502, and the hydraulic oil in the fixed cylinder 502 enters the first hydraulic cylinder 504 through the liquid guide tube 503. The telescopic end of the first hydraulic cylinder 504 extends out and drives the sliding shell 401 to move backward, and then the control panel starts the motor 201, the gear plate 5 rotates and drives the car 4 to move downward. When the car 4 just starts to move downward, the guide wheel of the car 4 is worn. The car 4 will produce a gap with the guide rail frame 1 during the acceleration process when the car 4 starts to move. At this time, as the car 4 moves downward, the swing rod 404 contacts and squeezes the guide rail frame 1. Since the limit block 602 limits the swing rod 404, the connecting rod 403 and the swing rod 404 do not rotate relative to each other. At this time, the hook formed by the connecting rod 403 and the swing rod 404 is hung on the crossbeam of the guide rail frame 1, and the connecting rod 403 is relatively fixed to the guide rail frame 1. As the car 4 drives the sliding rod 402 and the sliding rod 402 to move downward, the connecting rod 403 slides upward relative to the sliding rod 402, and the connecting rod 403 compresses the spring connected to it. The swing rod 404 generates an upward pulling force on the car 4 through the spring connected to the connecting rod 403. The two swing rods 404 pull the two sides of the car 4 at the same time to reduce the vibration of the car 4 and ensure the stability of the car 4 during the initial movement.

[0041] During the relative sliding of the connecting rod 403 and the sliding rod 402, the sliding support rod 601 contacts and squeezes the sliding rod 402, and the sliding support rod 601 slides downward relative to the connecting rod 403. The sliding support rod 601 pulls the limit block 602 downward through the pull rope, and the limit block 602 compresses the connected spring, and the limit block 602 moves out of the groove of the swing rod 404. The limit of the swing rod 404 is released, and the connecting rod 403 moves and resets under the elastic force of the connected spring, and the connecting rod 403 drives the swing rod 404 to move downward, and the swing rod 404 squeezes the crossbeam of the guide rail frame 1 so that it swings upward relative to the connecting rod 403. The torsion spring connected to the swing rod 404 twists and stores force. As the car 4 moves downward, when the swing rod 404 loses contact with the crossbeam of the guide rail frame 1, the swing rod 404 rotates and resets under the elastic force of the torsion spring. After 602 is aligned with the groove of the swing rod 404, the limit block 602 moves upward and is inserted into the groove of the swing rod 404 under the elastic force of the connected spring, and the swing rod 404 returns to the initial limit state. When the swing rod 404 contacts the lower cross beam of the guide rail frame 1, the above operation of providing a balanced pulling force for the car 4 is repeated, and then the control panel controls the telescopic end of the first electric push rod 202 to retract, the sliding plate 6 moves and resets, and the detection rod 301 moves and resets under the elastic force of the connected spring. The control panel controls the telescopic end of the second electric push rod 501 to extend and restore to the initial position, the slider 7 and the support rod 8 both return to their initial positions, the hydraulic oil in the guide tube 503 flows in the opposite direction, and the sliding shell 401 moves and resets. At this point, all parts have returned to their initial positions. When the car 4 moves to the next hovering position, the above hovering and stabilization operations are repeated.

[0042] In the above embodiment, the connection relationship between the sliding shell 401 and the sliding rod 402 can be regarded as a fixed connection. However, in the following embodiments, the connection relationship between the sliding shell 401 and the sliding rod 402 is a sliding connection.

[0043] Example 2: Based on Example 1, please refer to the attached Figure 2 -Attached Figure 4 and attached Figure 7 -Attached Fig. 9As shown, it also includes: two protection mechanisms, both of which are arranged on the car 4, and are used to hinder the movement of the car 4 when it slides down quickly. The protection mechanism includes: a speed measuring device 701, which is fixed to the car 4, the speed measuring device 701 is in contact with the guide rail frame 1, and the speed measuring device 701 is connected to the guide pipe 702; a second hydraulic cylinder 703, which is fixed to the sliding shell 401, the sliding shell 401 is slidably connected to the sliding rod 402, the second hydraulic cylinder 703 is connected to the guide pipe 702, the telescopic end of the second hydraulic cylinder 703 is fixed to the limit bending rod 704, a spring is fixed between the sliding shell 401 and the sliding rod 402, the limit bending rod 704 is slidably connected to the sliding shell 401, and the sliding rod 402 is provided with a blind hole, and the limit bending rod 704 is limited by the blind hole on the sliding rod 402 The third hydraulic cylinder 705 is fixedly connected to the connecting rod 403, the third hydraulic cylinder 705 is communicated with the guide tube 702, a blind hole is arranged on the limit block 602, the telescopic end of the third hydraulic cylinder 705 is limitedly cooperated with the blind hole on the limit block 602, and is used to lock the relative position of the connecting rod 403 and the swing rod 404, the speed measuring device 701, the guide tube 702, the second hydraulic cylinder 703 and the third hydraulic cylinder 705 are all filled with hydraulic oil, the relative sliding distance of the sliding shell 401 and the sliding rod 402 is equal to the sum of the moving distance of the sliding plate 6 and the moving distance of the sliding shell 401, and is used to make the swing rod 404 actively approach the guide rail frame 1 when the car 4 stalls, so as to lock the movement of the car 4.

[0044] In the above scheme, the problem that the connection of the gear plate 5 fails or is damaged, causing the car 4 to stall and slide, threatening the life safety of the staff, is solved. Initially, the spring between the sliding shell 401 and the sliding rod 402 is in a compressed state, and the limit bending rod 704 limits the sliding rod 402. The sliding shell 401 and the sliding rod 402 are relatively fixed, which is used to actively control the rapid ejection of the sliding rod 402. The speed measuring device 701 has an internal sliding block, a spring and hydraulic oil. When the acceleration or rotation speed of the speed measuring device 701 reaches a set value, the hydraulic oil in the speed measuring device 701 is centrifugal. Use the downward inflow guide pipe 702, the shape of the speed measuring device 701 is the same as the guide wheel of the car 4, the speed measuring device 701 has the function of guiding the movement of the car 4, the speed measuring device 701 is always in contact with the guide rail frame 1, when the car 4 moves, the speed measuring device 701 rotates and moves along the guide rail frame 1, and the acceleration of the car 4 is detected according to the rotation speed of the speed measuring device 701. Only when the acceleration of the car 4 is greater than the maximum acceleration during its normal movement, the sliding shell 401 and the sliding rod 402 are controlled to move relative to each other, and the car 4 is quickly braked to ensure the safety of the goods and personnel in the car 4.

[0045] Working process: During the normal movement of the car 4, the sliding shell 401 and the sliding rod 402 are always in a limited position state. When the parts at the gear plate 5 fail or are damaged, the car 4 stalls and descends. The hydraulic oil in the speed measuring device 701 enters the second hydraulic cylinder 703 and the third hydraulic cylinder 705 under the action of centrifugal force. The telescopic ends of the second hydraulic cylinder 703 and the third hydraulic cylinder 705 are extended. The telescopic end of the second hydraulic cylinder 703 drives the limit bending rod 704 to move upward, and the limit bending rod 704 moves out of the blind hole of the sliding rod 402. The relative fixation of the sliding shell 401 and the sliding rod 402 is released, and the front side Taking the sliding rod 402 as an example, the sliding rod 402 moves backward under the elastic force of the connected spring, and the swing rod 404 quickly approaches the guide rail frame 1. At the same time, the telescopic end of the third hydraulic cylinder 705 is inserted into the blind hole of the limit block 602, and the limit block 602 is limited. The relative positions of the connecting rod 403 and the swing rod 404 remain unchanged. As the car 4 slides down, the swing rod 404 squeezes the guide rail frame 1, the connecting rod 403 compresses the connected spring, and the swing rod 404 performs buffer braking on the car 4. When the sliding support rod 601 squeezes the sliding rod 402, the limit block 602 does not move, and the braking protection of the car 4 is completed.

[0046] The basic principles, main features and characteristics of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A safety protection device for an elevator used in engineering construction, characterized in that: include: A guide rail frame (1), wherein a rack (3) and a plurality of fixing blocks (2) are mounted on the guide rail frame (1), a car (4) is arranged on one side of the guide rail frame (1), the car (4) is slidably connected to the guide rail frame (1) via a guide wheel, the car (4) is rotatably connected to a plurality of gear plates (5), and the gear plates (5) are meshed with the rack (3); Two sliding plates (6) are both slidably connected to the car (4); a slider (7) is slidably connected to the sliding plate (6); and the slider (7) is slidably connected to a support rod (8) that is extruded and matched with the adjacent fixed block (2) and is used to disperse the force acting on the gear plate (5); A power mechanism, arranged on the gear plate (5), for controlling the timing of the car (4) to hover; Two positioning mechanisms, respectively arranged on the corresponding sliding plates (6), for positioning the car (4) at a position to be suspended; Two stabilizing mechanisms are respectively arranged on the corresponding sliding plates (6) and are used to keep the car (4) stable during the process of accelerating movement.

2. A safety protection device for an engineering construction elevator according to claim 1, characterized in that: The power mechanism comprises: A plurality of motors (201), the number of which is the same as the number of the gear plates (5), and the output shafts of the motors (201) and the gear plates (5) are driven via a reducer; Two first electric push rods (202) are both arranged on the car (4); the telescopic ends of the first electric push rods (202) are fixedly connected to the sliding plate (6) and are used to control the movement of the support rod (8) and cooperate with the fixed block (2) to support the car (4).

3. A safety protection device for an engineering construction elevator according to claim 2, characterized in that: The positioning mechanism comprises: A detection rod (301) is slidably connected to the sliding plate (6), a spring is fixedly connected between the detection rod (301) and the sliding plate (6), and a rack (302) is fixedly connected to both the detection rod (301) and the sliding block (7); A transmission gear (303) is rotatably connected to the sliding plate (6), the rack (302) is meshed with the transmission gear (303), and transmission is transmitted between the rack (302) on the detection rod (301) and the rack (302) on the sliding block (7) via the transmission gear (303), so as to enable the detection rod (301) and the support rod (8) to move alternately.

4. A safety protection device for an engineering construction elevator according to claim 3, characterized in that: The moving distance of the sliding plate (6) is equal to the moving distance of the support rod (8), and is used to control the contact state between the support rod (8) and the fixed block (2).

5. A safety protection device for an engineering construction elevator according to claim 4, characterized in that: The detection rod (301) is provided with two inclined surfaces which are mirror images of each other. The inclined surfaces of the detection rod (301) are pressed and matched with the fixed block (2). The maximum distance between the facing ends of the two detection rods (301) is equal to the distance between the opposite ends of the two fixed blocks (2) on the same horizontal plane. The detection rod (301) is used to position the fixed block (2) during the upward and downward movement of the car (4).

6. A safety protection device for an engineering construction elevator according to claim 5, characterized in that: The stabilizing mechanism comprises: A sliding shell (401) is slidably connected to the sliding plate (6); a sliding rod (402) is disposed inside the sliding shell (401); the sliding rod (402) is slidably connected to a connecting rod (403); a spring is fixedly connected between the connecting rod (403) and the sliding rod (402); A swing rod (404) is rotatably connected to the upper side of the connecting rod (403); a torsion spring is provided at the rotatable connection between the connecting rod (403) and the swing rod (404); and the swing rod (404) is extrusion-fitted with the guide rail frame (1); a control component, disposed on the slider (7), and used to control the support rod (8) and the sliding shell (401) to move in opposite directions; A limit assembly is arranged in the connecting rod (403) and is used to temporarily prevent the relative rotation between the connecting rod (403) and the swing rod (404).

7. A safety protection device for an engineering construction elevator according to claim 6, characterized in that: The control component comprises: A second electric push rod (501) is fixedly connected to the slider (7), and a telescopic end of the second electric push rod (501) is fixedly connected to the support rod (8) for actively releasing the support state of the fixed block (2) on the car (4); A fixed cylinder (502) is fixedly connected to the sliding block (7), the fixed cylinder (502) is sealingly and slidably connected to the support rod (8), the fixed cylinder (502) is connected to a liquid guide tube (503), the sliding plate (6) is fixedly connected to a first hydraulic cylinder (504), the first hydraulic cylinder (504) is connected to the liquid guide tube (503), the telescopic end of the first hydraulic cylinder (504) is fixedly connected to the sliding shell (401), and hydraulic oil is filled in the fixed cylinder (502), the liquid guide tube (503) and the first hydraulic cylinder (504).

8. A safety protection device for an engineering construction elevator according to claim 7, characterized in that: The limiting component comprises: A sliding support rod (601) is slidably connected in the connecting rod (403), and the sliding support rod (601) is extruded and matched with the sliding rod (402); A limit block (602) is slidably connected to the upper part of the connecting rod (403); a groove is provided at the rotation position of the swing rod (404); the limit block (602) and the groove of the swing rod (404) are limitedly matched; a spring is fixedly connected between the limit block (602) and the connecting rod (403); and the sliding support rod (601) and the limit block (602) are connected by a pull rope.

9. A safety protection device for an engineering construction elevator according to claim 8, characterized in that: Also includes: Two protection mechanisms are provided on the car (4) and are used to hinder the movement of the car (4) when the car (4) slides down rapidly. The protection mechanisms include: A speed measuring device (701) is fixedly connected to the car (4), the speed measuring device (701) is in contact with and cooperates with the guide rail frame (1), and the speed measuring device (701) is connected to a flow guide pipe (702); A second hydraulic cylinder (703) is fixedly connected to the sliding shell (401), the sliding shell (401) is slidably connected to the sliding rod (402), the second hydraulic cylinder (703) is communicated with the guide tube (702), the telescopic end of the second hydraulic cylinder (703) is fixedly connected to a limit bending rod (704), a spring is fixedly connected between the sliding shell (401) and the sliding rod (402), the limit bending rod (704) is slidably connected to the sliding shell (401), a blind hole is provided on the sliding rod (402), the limit bending rod (704) and the blind hole on the sliding rod (402) are limitedly matched to control the relative sliding of the sliding shell (401) and the sliding rod (402); The third hydraulic cylinder (705) is fixedly connected to the connecting rod (403). The third hydraulic cylinder (705) is in communication with the guide tube (702). The limit block (602) is provided with a blind hole. The telescopic end of the third hydraulic cylinder (705) is limitedly matched with the blind hole on the limit block (602) to lock the relative position of the connecting rod (403) and the swing rod (404). The speed measuring device (701), the guide tube (702), the second hydraulic cylinder (703) and the third hydraulic cylinder (705) are all filled with hydraulic oil.

10. A safety protection device for an engineering construction elevator according to claim 9, characterized in that: The relative sliding distance between the sliding shell (401) and the sliding rod (402) is equal to the sum of the moving distance of the sliding plate (6) and the moving distance of the sliding shell (401), and is used to enable the swing rod (404) to actively approach the guide rail frame (1) when the car (4) stalls, thereby locking the movement of the car (4).

Images