CN209065226U - A kind of safety device of construction elevator - Google Patents

Abstract

The utility model discloses a kind of safety devices of construction elevator, including elevator tunnel, the damping pit using rectangular configuration is offered on the inside of the elevator tunnel, the bottom in the elevator tunnel extends to the interior bottom of damping pit, the inner wall in the elevator tunnel successively slidably connects upper bearing plate and lower bearing plate under upper, the upper bearing plate and lower bearing plate side close to each other are connected with multiple first damping springs jointly, and the lower end of the lower bearing plate is equipped with multiple secondary buffer devices.The utility model is after elevator falls and after having certain gravitional force and kinetic energy, energy can completely be consumed by the first damping spring, secondary buffer device and the three-level buffer unit between upper bearing plate and lower bearing plate, it ensure that the life security of elevator interior staff, improve elevator safety in utilization.

Description

A safety protection device for elevators used in building construction

technical field

The utility model relates to the technical field of building construction elevators, in particular to a safety protection device for a building construction elevator.

Background technique

In building construction, elevators are one of the most important facilities as a vertical lift for carrying people and goods. As a temporary facility in construction, elevators in the prior art often use simple protection methods, which cannot achieve high-altitude defense. The effect of falling, which leads to the fact that the elevator cannot be effectively buffered when it falls, and it is easy to cause personal injury to the staff in the elevator, which has a very large hidden danger.

Utility model content

The purpose of the utility model is to solve the problems in the background technology, and proposes a safety protection device for an elevator for building construction.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

A safety protection device for an elevator for building construction, comprising an elevator roadway, a shock-absorbing pit with a rectangular structure is opened on the inner side of the elevator roadway, the bottom of the elevator roadway extends to the inner bottom of the shock-absorbing pit, the The inner wall of the elevator roadway is slidably connected with an upper bearing plate and a lower bearing plate in sequence from top to bottom, and a plurality of first shock-absorbing springs are fixed together on the side of the upper bearing plate and the lower bearing plate that are close to each other. The lower end of the plate is provided with a plurality of secondary buffer devices.

Preferably, each secondary buffer device includes a limit slot symmetrically opened on the inner wall of the elevator roadway, the inner top wall and the inner bottom wall of the limit slot are jointly fixed with limit posts, and two of the limit posts A load-bearing rod is slidably connected to each other through a linear bearing, and a second shock-absorbing spring is movably sleeved on the limit column located under the load-bearing rod, and both ends of the second shock-absorbing spring are respectively fixed to the load-bearing rod, so The load-bearing rod is provided with two limit plates in a symmetrical interference fit, the load-bearing rod is symmetrically slidably sleeved with two sliding sleeves, and the limit plate and the sliding sleeve on the same side are fixedly fixed with a third shock absorbing The third shock-absorbing spring is movably sleeved on the load-bearing rod, the two sliding sleeves are symmetrically rotatably connected with connecting rods, and the bottom end of the lower load-bearing plate is symmetrically provided with grooves at the corresponding positions of the load-bearing rods The inner wall of the groove is rotatably connected with a rotating shaft, the end of the connecting rod away from the sliding sleeve is fixedly sleeved on the rotating shaft, and the middle part of the load-bearing rod is provided with a three-stage buffer device.

Preferably, the three-stage buffer device includes a piston rod fixedly sleeved in the middle of the load-bearing rod, a piston box is provided directly below the piston rod, the inner wall of the piston box is slidably connected with a piston, and the lower end of the piston rod is It penetrates through the piston case and is fixedly connected with the piston, and an air outlet pipe and an air intake pipe are respectively communicated with the outside of the piston case.

Preferably, a pressure relief valve is installed on the air outlet pipe, and a check valve is installed on the air inlet pipe.

Preferably, the upper end surface of the upper bearing plate is level with the ground.

Preferably, the number of the secondary buffer devices is at least three.

Compared with the existing technology, the advantages of the safety protection device of the elevator for building construction are:

When the elevator falls and has a certain gravitational potential energy and kinetic energy, the energy can be completely consumed by the first shock-absorbing spring, the second-level buffer device and the third-level buffer device between the upper and lower load-bearing plates to ensure that The life safety of the staff inside the elevator is improved, and the safety of elevator use is improved.

Description of drawings

Fig. 1 is the structural representation of the safety protection device of a kind of building construction elevator proposed by the utility model;

FIG. 2 is a bottom view of the lower bearing plate of a safety protection device of an elevator for building construction proposed by the utility model.

In the picture: 1 elevator roadway, 2 shock absorption pit, 3 upper bearing plate, 4 first shock spring, 5 lower bearing plate, 6 connecting rod, 7 piston rod, 8 sliding sleeve, 9 limit groove, 10 limit Column, 11 second shock spring, 12 limit plate, 13 third shock spring, 14 piston box, 15 piston, 16 air outlet, 17 intake pipe, 18 groove, 19 shaft, 20 load-bearing rod.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example.

Referring to Fig. 1-2, a safety protection device of an elevator for building construction includes an elevator roadway 1, a shock absorption pit 2 with a rectangular structure is opened on the inner side of the elevator roadway 1, and the bottom of the elevator roadway 1 extends to the shock absorption pit 2, the inner wall of the elevator roadway 1 is slidably connected with the upper bearing plate 3 and the lower bearing plate 5 in order from top to bottom, and the sides of the upper bearing plate 3 and the lower bearing plate 5 that are close to each other are jointly fixed with a plurality of first bearing plates. The shock-absorbing spring 4 and the lower end of the lower bearing plate 5 are provided with a plurality of secondary buffering devices. The number of secondary buffering devices is at least 3, and may be more than one, but should not be too small or too much.

Each secondary buffer device includes a limit slot 9 symmetrically opened on the inner wall of the elevator roadway 1, the inner top wall and the inner bottom wall of the limit slot 9 are fixedly connected to the limit column 10, and the two limit columns 10 pass through A load-bearing rod 20 is slidably connected to the linear bearing, and the linear bearing can improve the mechanical efficiency. A second damping spring 11 is movably sleeved on the limiting column 10 under the bearing rod 20, and two ends of the second damping spring 11 are respectively connected to The load-bearing rod 20 is fixedly connected, the load-bearing rod 20 is symmetrically fitted with two limit plates 12 with interference fit, the load-bearing rod 20 is symmetrically slidably sleeved with two sliding sleeves 8, and the limit plates 12 on the same side are shared with the sliding sleeve 8 A third shock-absorbing spring 13 is fixedly connected, the third shock-absorbing spring 13 is movably sleeved on the load-bearing rod 20 , the two sliding sleeves 8 are symmetrically rotated and connected with the connecting rod 6 , and the bottom end of the lower bearing plate 5 is at the bottom of the load-bearing rod 20 . A groove 18 is symmetrically opened at the corresponding position. The inner wall of the groove 18 is rotatably connected with a rotating shaft 19. The end of the connecting rod 6 away from the sliding sleeve 8 is fixedly sleeved on the rotating shaft 19.

The three-stage buffer device includes a piston rod 7 that is fixedly sleeved in the middle of the bearing rod 20 , a piston case 14 is provided directly below the piston rod 7 , a piston 15 is slidably connected to the inner wall of the piston case 14 , and the lower end of the piston rod 7 penetrates the piston case 14 And it is fixedly connected with the piston 15, the outside of the piston box 14 is respectively connected with an outlet pipe 16 and an inlet pipe 17, a pressure relief valve is installed on the outlet pipe 16, and a check valve is installed on the inlet pipe 17, and the pressure relief valve mainly acts as a piston. The internal pressure of the box 14 is too large to release the pressure, and the one-way valve mainly plays the role of supplementing the gas inside the piston box 14 and balancing the air pressure.

It is further stated that the above-mentioned fixing, unless otherwise explicitly specified and limited, should be understood in a broad sense, for example, it may be welding, gluing, or a conventional means known to those skilled in the art such as integral molding.

It should be noted that the piston box 14 is fixedly installed on the inner bottom of the shock-absorbing pit 2, and the outer side of the shock-absorbing pit 2 is provided with a concrete foundation to ensure the structural strength of the ground on the peripheral side of the elevator.

In the present invention, once the elevator falls, the bottom of the elevator first directly contacts the upper bearing plate 3, and compresses the first shock-absorbing spring 4, and transmits the impact force to the lower bearing plate 5 through the plurality of first shock-absorbing springs 4. The load-bearing plate 5 is displaced vertically downward and drives the included angle between the two connecting rods 6 in the multiple secondary buffer devices and the load-bearing rod 20 to increase, and the two connecting rods 6 respectively drive the two sliding sleeves 8 to move opposite to each other, Then the second damping spring 11 is compressed until the compression amount of the second damping spring 11 reaches the maximum, the angle between the connecting rod 6 and the bearing rod 20 tends to be 180 degrees, and the bearing rod 20 will also be vertically displaced downward, and the bearing rod Both ends of 20 slide on the limit rod 10 through linear bearings and compress the third damping spring 13. At the same time, the piston rod 7 drives the piston 15 to vertically move downward to compress the air inside the piston box 14, so that the air inside the piston box 14 is compressed. The pressure increases, and after it reaches a certain pressure, the pressure can be released through the pressure relief valve on the air outlet pipe 16 until the normal pressure is restored. Through the multi-stage buffering, the kinetic energy and gravitational potential energy of the elevator falling can be completely consumed, ensuring the internal work of the elevator. life safety of personnel;

In addition, when the elevator is working normally, the device plays a buffering role. After the elevator returns to normal, the other components will be recovered under the elastic force of the first shock-absorbing spring 4, the second shock-absorbing spring 11 and the third shock-absorbing spring 13. All are restored to their original positions, the piston rod 7 drives the piston 15 to move vertically upward, and the gas passes through the one-way valve on the intake pipe 17 to replenish the piston box 14 again.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Equivalent replacement or modification of the new technical solution and its utility model concept shall be included within the protection scope of the present utility model.

Claims (6)

1. a kind of safety device of construction elevator, including elevator tunnel (1), which is characterized in that the elevator lane The damping pit (2) using rectangular configuration is offered on the inside of road (1), it is recessed that the bottom of the elevator tunnel (1) extends to damping Cheat the interior bottom of (2), the inner wall of the elevator tunnel (1) successively slidably connects upper bearing plate (3) and lower load-bearing under upper Plate (5), the upper bearing plate (3) and lower bearing plate (5) side close to each other are connected with multiple first damping springs jointly (4), the lower end of the lower bearing plate (5) is equipped with multiple secondary buffer devices.

2. a kind of safety device of construction elevator according to claim 1, which is characterized in that each secondary Buffer unit includes the limiting slot (9) being symmetrically provided on elevator tunnel (1) inner wall, the inner roof wall of the limiting slot (9) with Inner bottom wall is connected with limited post (10) jointly, and two limited posts (10) slidably connect load-bearing by linear bearing jointly Bar (20) is located at movable sleeve on the limited post (10) below bearing bar (20) and is connected to the second damping spring (11), and described the The both ends of two damping springs (11) are affixed with bearing bar (20) respectively, and symmetrically there are two limits for interference fit on the bearing bar (20) Position plate (12) is symmetrically slidably socketed on the bearing bar (20) there are two sliding sleeve (8), the limit plate (12) positioned at the same side It is connected with jointly third damping spring (13) with sliding sleeve (8), the third damping spring (13) is actively socketed on bearing bar (20) On, two sliding sleeves (8) are symmetrically rotatably connected to connecting rod (6), and the bottom end of the lower bearing plate (5) is in bearing bar (20) It is symmetrically opened up on corresponding position fluted (18), the inner wall of the groove (18) is rotatably connected to shaft (19), the connecting rod (6) one end far from sliding sleeve (8) is fixedly attached on shaft (19), and the middle part of the bearing bar (20) is equipped with three-level buffering dress It sets.

3. a kind of safety device of construction elevator according to claim 2, which is characterized in that the three-level Buffer unit includes the piston rod (7) being fixedly attached in the middle part of bearing bar (20), and the piston rod (7) is arranged right below piston The inner wall of case (14), the piston case (14) slidably connects piston (15), and piston case is run through in the lower end of the piston rod (7) (14) and it is affixed with piston (15), escape pipe (16) and air inlet pipe (17) have been respectively communicated on the outside of the piston case (14).

4. a kind of safety device of construction elevator according to claim 3, which is characterized in that the outlet Relief valve is installed on pipe (16), check valve is installed on the air inlet pipe (17).

5. a kind of safety device of construction elevator according to claim 1, which is characterized in that held on described The upper surface of weight plate (3) and ground level.

6. a kind of safety device of construction elevator according to claim 1, which is characterized in that described secondary The number of buffer unit is at least 3.