Construction safety protection device for preventing bottom of vertical shaft from falling
By designing a construction safety protection device that prevents falling from falling at the bottom of the shaft including pulling mechanism and protective mechanism, the problem of traditional devices being inconvenient to clean falling objects and issuing alarms quickly is solved, and convenient block cleaning and timely alarm issuance is achieved. , improve construction safety.
Patent Information
- Application Number
- CN202421265728.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-05
AI Technical Summary
Traditional shaft protection devices are not convenient for staff to clean fallen blocks, and are not convenient for quickly issuing alarms, which affects staff above the shaft to promptly check for dangers.
A construction safety protection device is designed to prevent falling from falling at the bottom of the shaft including a pulling mechanism and a protective mechanism. The pulling mechanism drives the winding roller and wire rope through the motor, which drives the protective net to move upwards and cleans down blocks. The protective mechanism drives the contact shaft through the protective net to press the normally closed switch, activates the beeping alarm, and quickly issues an alarm.
It has been achieved to facilitate staff to clean fallen blocks and issue alarms in a timely manner, so as to facilitate staff above the vertical shaft to promptly check for dangerous situations, and improve construction safety.
Smart Images
Figure CN222501772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of construction safety, in particular to a construction safety protection device for preventing a shaft bottom from falling. Background Art
[0002] During subway construction, it is necessary to excavate the soil layer and dig a vertical shaft for construction. After the excavation of the vertical shaft is completed, the construction workers enter the lower cavern for construction. Due to the falling of side walls and objects falling from the wellhead, there is a risk of falling objects at the bottom of the vertical shaft, which greatly affects the safety of the construction workers and equipment in the lower cavern.
[0003] Traditional protective devices generally install protective nets on the side walls of the shaft, but traditional protective nets are generally fixed. When fallen objects fall on the protective nets, people above need to come down to clean them up, which is inconvenient for the staff to clean up the fallen objects, and it is not convenient to quickly issue an alarm, which is not convenient for the staff above the shaft to check for dangerous situations in time. Utility Model Content
[0004] In order to overcome the shortcomings of traditional devices that are inconvenient for workers to clean up fallen objects, inconvenient to quickly issue alarms, and inconvenient for workers above the shaft to promptly check for dangerous situations, the utility model provides a construction safety protection device for preventing falling at the bottom of the shaft, which can facilitate workers to clean up fallen objects, and can facilitate and quickly issue alarms, and facilitate workers above the shaft to promptly check for dangerous situations.
[0005] The technical solution of the utility model is: a construction safety protection device for preventing falling at the bottom of a shaft, comprising two base frames, two mounting frames fixedly connected between the two base frames, the two mounting frames are symmetrically arranged, two handrails fixedly connected between the two mounting frames, the two handrails are symmetrically arranged, and a pulling mechanism is provided on the mounting frame, the pulling mechanism is used to pull up fallen objects, so that the staff can clean up the fallen objects conveniently.
[0006] In one of the embodiments, the pulling mechanism includes a motor, wherein two of the motors are fixedly connected to the upper part of one of the mounting frames, the two motors are symmetrically arranged, two winding rollers are rotatably connected between the two mounting frames, the two winding rollers are symmetrically arranged, one end of the winding roller is fixedly connected to the output shaft of the motor, two guide rollers are rotatably connected between the two mounting frames, the two guide rollers are symmetrically arranged, the guide roller is located between the two winding rollers, a steel wire rope is wound around the winding roller, and one end of the steel wire rope is passed around the guide roller.
[0007] In one of the embodiments, a protective mechanism is further included. The protective mechanism is arranged between the two steel wire ropes. The protective mechanism includes a protective net. The protective net is fixedly connected between the two steel wire ropes. A plurality of circular shafts are fixedly connected to the bottom of the protective net. The plurality of circular shafts are evenly spaced and perpendicular to the protective net. A sliding column is slidably connected to the circular shaft. A reset spring is provided between the sliding column and the protective net.
[0008] In one of the embodiments, the protective net is provided with a plurality of through holes.
[0009] In one of the embodiments, a buzzer alarm is also included, wherein the upper end of one of the sliding columns is fixedly connected to the buzzer alarm, a normally closed switch is provided on the top of the buzzer alarm, a contact shaft is fixedly connected to the bottom of the protective net, the contact shaft is located above the normally closed switch, and the contact shaft is in contact with the normally closed switch.
[0010] The beneficial effects of the utility model are: 1. The motor drives the winding roller to rotate in the opposite direction, the winding roller reels the wire rope, the wire rope drives the protective net to move upward, the protective net drives the fallen objects on the protective net and the circular shaft to move upward, the circular shaft drives the sliding column and the reset spring to move upward, and the fallen objects can be pulled up, which is convenient for the staff to clean up the fallen objects.
[0011] 2. The contact shaft is driven downward by the protective net, and the contact shaft contacts and presses the normally closed switch. The normally closed switch opens and starts the buzzer alarm. The buzzer alarm will sound an alarm, and it can sound an alarm quickly, making it easy for the staff above the shaft to check for dangerous situations in time. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0013] Figure 2 This is a schematic diagram of a first partial three-dimensional structure of the utility model.
[0014] Figure 3 This is a schematic diagram of a second partial three-dimensional structure of the utility model.
[0015] Figure 4 It is a schematic diagram of a partially disassembled three-dimensional structure of the utility model.
[0016] Figure 5 It is a three-dimensional structural schematic diagram of the buzzer alarm and the normally closed switch of the utility model.
[0017] Markings in the figure are: 1-base frame, 2-mounting frame, 3-handrail, 4-motor, 5-winding roller, 6-guide roller, 7-wire rope, 8-protective net, 9-round shaft, 10-sliding column, 11-reset spring, 12-buzzer alarm, 13-normally closed switch, 14-contact shaft. DETAILED DESCRIPTION
[0018] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.
[0019] Embodiment 1: A construction safety protection device for preventing falling at the bottom of a shaft, such as Figure 1-Figure 5 As shown, it includes two base frames 1, two mounting frames 2 are welded between the two base frames 1, the two mounting frames 2 are symmetrically arranged, two handrails 3 are connected between the two mounting frames 2 by bolts, the two handrails 3 are symmetrically arranged, and a pulling mechanism is provided on the mounting frame 2, and the pulling mechanism is used to pull up fallen objects to facilitate the staff to clean up the fallen objects.
[0020] The pulling mechanism includes a motor 4, wherein two motors 4 are fixedly connected to the upper part of one of the mounting frames 2, and the two motors 4 are symmetrically arranged. Two winding rollers 5 are rotatably connected between the two mounting frames 2, and the two winding rollers 5 are symmetrically arranged. One end of the winding roller 5 is fixedly connected to the output shaft of the motor 4, and the motor 4 is used to drive the winding roller 5 to rotate. Two guide rollers 6 are rotatably connected between the two mounting frames 2, and the two guide rollers 6 are symmetrically arranged. The guide roller 6 is located between the two winding rollers 5, and a steel wire rope 7 is wound around the winding roller 5, and one end of the steel wire rope 7 is passed around the guide roller 6, and the guide roller 6 is used to guide the steel wire rope 7.
[0021] It also includes a protection mechanism, which is arranged between the two steel wire ropes 7. The protection mechanism includes a protection net 8. The protection net 8 is fixedly connected between the two steel wire ropes 7. The steel wire ropes 7 are used to drive the protection net 8 to move up and down. A plurality of circular shafts 9 are fixedly connected to the bottom of the protection net 8. The protection net 8 is used to drive the circular shafts 9 to move up and down. The plurality of circular shafts 9 are evenly spaced. The circular shafts 9 are perpendicular to the protection net 8. A sliding column 10 is slidably connected to the circular shaft 9. A reset spring 11 is provided between the sliding column 10 and the protection net 8.
[0022] The protective net 8 is provided with a plurality of through holes.
[0023] At the beginning, the construction workers enter the shaft first, and the staff above the shaft moves the two base frames 1 to the two sides of the shaft respectively, and then puts the protective net 8, the round shaft 9, the sliding column 10 and the reset spring 11 into the shaft, and then starts the motor 4. The output shaft of the motor 4 rotates to drive the winding roller 5 to rotate, and the winding roller 5 rotates to lengthen the wire rope 7. Under the action of gravity, the protective net 8, the round shaft 9, the sliding column 10 and the reset spring 11 will move downward. When the sliding column 10 contacts the bottom of the shaft, the staff stops the motor 4. At this time, the protective net 8 is located above the construction workers, and the protective net 8 can block the objects falling from above. After the construction is completed, the staff adjusts the electric The machine 4 rotates in the opposite direction, and the output shaft of the motor 4 rotates in the opposite direction to drive the winding roller 5 to rotate in the opposite direction. The winding roller 5 rotates in the opposite direction to reel in the wire rope 7. The reeling in the wire rope 7 drives the protective net 8 to move upward. The upward movement of the protective net 8 drives the fallen objects on the protective net 8 and the round shaft 9 to move upward. The upward movement of the round shaft 9 drives the sliding column 10 and the reset spring 11 to move upward. Through the above operation, the fallen objects can be pulled up, which is convenient for the staff to clean up the fallen objects. After the objects leave the shaft, the staff cleans up the objects on the protective net 8, and then pulls the protective net 8, the round shaft 9, the sliding column 10 and the reset spring 11 out of the shaft, which is convenient for the construction personnel to leave the shaft.
[0024] Embodiment 2: Based on embodiment 1, Figure 1-Figure 5 As shown, a buzzer alarm 12 is also included, wherein the upper end of one of the sliding columns 10 is fixedly connected to the buzzer alarm 12, and the sliding column 10 is used to drive the buzzer alarm 12 to move up and down. A normally closed switch 13 is provided on the top of the buzzer alarm 12, and a contact shaft 14 is fixedly connected to the bottom of the protective net 8. The protective net 8 is used to drive the contact shaft 14 to move up and down. The contact shaft 14 is located above the normally closed switch 13, and the contact shaft 14 will contact the normally closed switch 13. The protective net 8 drives the contact shaft 14 to press the normally closed switch 13, thereby opening or closing the buzzer alarm 12.
[0025] Initially, the buzzer alarm 12 and the normally closed switch 13 are in the closed state, the protective net 8 moves downward, driving the contact shaft 14 to move downward, the sliding column 10 moves downward, driving the buzzer alarm 12 to move downward, and the buzzer alarm 12 moves downward, driving the normally closed switch 13 to move downward. When an object falls on the protective net 8, the impact force of the object will squeeze the protective net 8 downward, the protective net 8 moves downward, driving the round shaft 9 to move downward, the reset spring 11 is compressed, the protective net 8 moves downward, driving the contact shaft 14 to move downward, the contact shaft 14 moves downward and contacts with the normally closed switch 13 and presses the normally closed switch 13, the normally closed switch 13 is turned on and starts the buzzer alarm 12, and the buzzer alarm 12 will sound an alarm. Through the above operation, an alarm can be quickly sounded, which is convenient for the staff above the shaft to check the dangerous situation in time, the protective net 8 moves upward, driving the contact shaft 14 to move upward, the contact shaft 14 moves upward and disengages from the normally closed switch 13, the normally closed switch 13 is closed and turns off the buzzer alarm 12.
[0026] The above description is only an example of the implementation of the present invention and is not intended to limit the present invention. Any equivalent replacement made within the principle of the present invention shall be included in the protection scope of the present invention. The contents not elaborated in the present invention belong to the existing technology known to the technicians in this professional field.
Claims
1. A construction safety protection device for preventing falling at the bottom of a shaft, characterized in that: The invention comprises two base frames (1), two mounting frames (2) are fixedly connected between the two base frames (1), the two mounting frames (2) are symmetrically arranged, two handrails (3) are fixedly connected between the two mounting frames (2), the two handrails (3) are symmetrically arranged, and a pulling mechanism is provided on the mounting frame (2), the pulling mechanism is used to pull up fallen objects, so as to facilitate workers to clean up the fallen objects.
2. A construction safety protection device for preventing a shaft from falling at the bottom as claimed in claim 1, characterized in that: The pulling mechanism comprises a motor (4), wherein two motors (4) are fixedly connected to the upper part of one of the mounting frames (2), and the two motors (4) are symmetrically arranged. Two winding rollers (5) are rotatably connected between the two mounting frames (2), and the two winding rollers (5) are symmetrically arranged. One end of the winding roller (5) is fixedly connected to the output shaft of the motor (4). Two guide rollers (6) are rotatably connected between the two mounting frames (2), and the two guide rollers (6) are symmetrically arranged. The guide roller (6) is located between the two winding rollers (5), and a steel wire rope (7) is wound around the winding roller (5), and one end of the steel wire rope (7) is passed around the guide roller (6).
3. A construction safety protection device for preventing a shaft from falling at the bottom as claimed in claim 2, characterized in that: The invention also comprises a protection mechanism, wherein the protection mechanism is arranged between the two steel wires (7), and the protection mechanism comprises a protection net (8). The protection net (8) is fixedly connected between the two steel wires (7), and a plurality of circular shafts (9) are fixedly connected to the bottom of the protection net (8). The plurality of circular shafts (9) are arranged at even intervals, and the circular shafts (9) are perpendicular to the protection net (8). A sliding column (10) is slidably connected to the circular shaft (9), and a reset spring (11) is arranged between the sliding column (10) and the protection net (8).
4. A construction safety protection device for preventing a shaft from falling at the bottom as claimed in claim 3, characterized in that: The protective net (8) is provided with a plurality of through holes.
5. A construction safety protection device for preventing a shaft from falling at the bottom as claimed in claim 4, characterized in that: It also includes a buzzer alarm (12), wherein the upper end of one of the sliding columns (10) is fixedly connected to the buzzer alarm (12), a normally closed switch (13) is provided on the top of the buzzer alarm (12), and a contact shaft (14) is fixedly connected to the bottom of the protective net (8), the contact shaft (14) is located above the normally closed switch (13), and the contact shaft (14) is in contact with the normally closed switch (13).