CN107975071B - Safety device for pit - Google Patents

Abstract

A safety cellar well device of the present invention relates to a protective device, in particular to an anti-falling device for a cellar well. The safety pit device includes a well cover, a controller, a lifting device, a driving motor for the lifting device, two guide rails, an induction device and a load-bearing plate. The well cover is used to close the well head of the pit; On the wall; the load-bearing plate is connected to the side wall of the cellar well in such a way that one side of the flap is horizontal; when the load-bearing plate is turned horizontally, the load-bearing plate passes through a set of notches on the opposite sides. It is combined on two guide rails, and can move up and down along the guide rails; the sensing device is arranged on the side wall of the cellar well through the fixing frame and is located at the wellhead of the cellar well; The human body is sent out of the cellar well after the load-bearing plate.

Description

A safety device for cellar wells

technical field

The invention relates to a protection device, in particular to a falling prevention device matched with a cellar well.

Background technique

Cellar wells are usually equipped with a manhole cover to ensure safety. Once the manhole cover is lost, without other protective measures, it will cause pedestrians to stumble and fall, or the wheels of a moving vehicle will be trapped. Into the cellar well, fall to the bottom of the well and become unconscious or drown. Even if you call for help when you are awake, you may not be able to send out the cellar well, so that others cannot find or rescue in time, and eventually cause personal injury or even death.

Contents of the invention

The purpose of the present invention is to provide a safety device for a pit in order to overcome the problem that people fall into the pit and cannot be found or rescued in time by others.

A safety device for cellar wells of the present invention includes a well cover, a controller, a lifting device, a driving motor for the lifting device, two guide rails, an induction device and a load-bearing plate,

The well cover is used to close the wellhead of the pit; two guide rails are arranged on the side wall of the pit;

The load-bearing plate is connected to the side wall of the cellar well in such a way that one side of the flap is horizontal; when the load-bearing plate is turned horizontally, the load-bearing plate is buckled on the two sides through a set of gaps on the opposite sides. on the guide rail, and can move up and down along the guide rail;

The induction device is arranged on the side wall of the cellar well through the fixing frame and is located at the wellhead of the cellar well; the induction device is used to sense the human body falling into the cellar well, and the signal output end of the induction device is connected with the induction signal input end of the controller; The motor driving control signal output terminal is connected with the driving control signal input terminal of the driving motor of the lifting device; the driving motor of the lifting device is used to drive the lifting device to move up and down along the guide rail.

The present invention is mainly applied to the well cover of the cellar being removed and the well head of the cellar is exposed. At this time, someone falls, and the sensing device senses that the person falls and immediately sends a sensing signal to the controller, and the controller controls the load-bearing plate to turn the plate into a flat plate to catch the fallen person;

Then, the controller controls the lifting device to lift the load-bearing plate and send the fallen person out of the cellar;

In the present invention, the load-bearing plate and the side wall of the cellar well can be connected in various ways, as long as the load-bearing plate is quickly leveled when a fall occurs. Therefore, electromagnetic methods, hooks and other methods can be used to realize.

In daily life, the load-bearing plate can be placed sideways in the well or directly laid flat in the well. The way of direct laying only needs to be opened at the top when maintenance personnel enter and exit, which is safer than the way of standing sideways.

The beneficial effects of the present invention are: it can sense the falling human body in time, and rise up after the human body falls off the bearing plate, and send the human body out of the cellar well, so that others can find and rescue them in time, reducing the impact on the human body caused by the falling cellar well by more than 90%. Risk of injury or even death.

Description of drawings

Fig. 1 is the structural representation of a kind of safety device that is used for cellar well of the present invention;

Figure 2 is a partial enlarged view of A in Figure 1;

Fig. 3 is a schematic structural diagram of a circuit module of a safety device for pits according to the present invention;

Fig. 4 is a schematic structural diagram of a safety device for a cellar in Embodiment 2 of the present invention;

Fig. 5 is a partial enlarged view of place B in Fig. 4;

Fig. 6 is a top plan view of an induction device for a safety device of the present invention;

Fig. 7 is a plan view above the load-bearing plate of a safety device for pits according to the present invention.

Detailed ways

Specific implementation mode one

A safety device for cellar wells of the present invention includes a well cover, a controller 1, a lifting device 2, a driving motor 3 for the lifting device, two guide rails 4, an induction device 5 and a load-bearing plate 6.

The well cover is used to close the wellhead of the pit; two guide rails 4 are relatively arranged on the side wall of the pit;

The load-bearing plate 6 is connected to the side wall of the cellar well in such a way that one side of the flap is horizontal; in the state where the load-bearing plate 6 is turned horizontally, the load-bearing plate 6 passes through a set of notches on the opposite sides. Combined on the two guide rails 4, and can move up and down along the guide rails 4;

One side of the load-bearing plate 6 is provided with a rotating shaft, and the side wall of the cellar well is provided with a corresponding bushing. After the plate 6 rises, it is easy to break away from the axle sleeve.

Induction device 5 is arranged on the side wall of cellar well and is positioned at the wellhead place of cellar well by fixed frame 7; Connection; the motor drive control signal output end of the controller 1 is connected to the drive control signal input end of the lifting device driving motor 3; the lifting device driving motor 3 is used to drive the lifting device 2 to move up and down along the guide rail.

Induction device 5 comprises induction plate and inductor, and induction plate is plate-shaped and is arranged on the sidewall of cellar well by fixed frame 7, and inductor is installed in the induction plate, can adopt microwave inductor, photoelectric sensor etc., and its induction human body approach, and generate a signal output to the controller 1, and the controller 1 outputs a motor drive signal to drive the lifting device to drive the motor 3 to run.

Embodiment 2. The difference between this embodiment and Embodiment 1 is that the specific structure of the load-bearing plate 6 connected to the side wall of the cellar well is that the side wall of the load-bearing plate 6 is horizontal. One point of the hinge is connected with one end of the hinge; an electromagnetic relay 8 is installed on the side wall of the pit well, and the electromagnetic relay 8 is used to absorb the other end of the hinge; the control signal input end of the electromagnetic relay control coil is connected with the relay control coil of the controller 1 The control signal output terminal connection.

In addition to using the electrical method of the electromagnetic relay 8, a mechanical linkage method can also be used. As shown in Figure 4 or Figure 5, a crank arm is hinged on one side of the fixed frame 7 through a connecting rod, and the middle part of the crank arm is connected to the cellar well. The side wall of the shaft is hinged, and the top of the load-bearing plate 6 is fixed on the side wall of the cellar well by means of elastic clips. When the induction device 5 is pressed down by an external force, the fixed frame 7 drives the crank arm, so that the crank arm pushes the load-bearing plate. 6 Make it break away from the elastic clip, and then make the load-bearing plate 6 drop.

Embodiment 3. The difference between Embodiment 3 and Embodiment 1 is that a pair of lifting devices 2 are respectively installed on two guide rails 4 and can move up and down along the guide rails 4. One side of the lifting device 2 can adopt It is installed on the guide rail 4 in an embedded manner, so that it can not break away from the guide rail 4 and can be lifted and lowered freely.

A pair of lifting device driving motors 3 are respectively arranged on two guide rails 4, and the lifting device 2 on the same side is fixed above the lifting device driving motor 3, that is, there is a lifting device driving motor 3 under each lifting device 2. The lifting device 2 and the driving motor 3 of the lifting device can reduce the burden of a single motor.

Embodiment 4. The difference between Embodiment 4 and Embodiment 1 or 3 is that a rack is provided inside the guide rail 4, and the drive motor 3 of the lifting device is driven by a reducer to cooperate with a driving gear, and the driving gear is meshed with the rack .

The driving motor 3 of the lifting device drives the driving gear to rotate, and the driving gear converts the rotation into the up and down translation of the rack, thereby driving the lifting device 2 to move up and down.

Embodiment 5. The difference between Embodiment 5 and Embodiment 4 is that the driving motor 3 of the lifting device is a stepping motor.

When the stepper motor is not overloaded, the speed and stop position only depend on the frequency and number of pulses of the pulse signal, and are not affected by load changes. Therefore, when the weight of the human body in the falling well is uncertain, the lifting device drives Motor 3 can adopt stepper motor.

Embodiment 6. The difference between this Embodiment 6 and Embodiment 1 is that the upper surface of the sensing device 5 is transparent, and an illumination lamp is installed inside the sensing device 5 .

The lighting lamp inside the induction device 5 can emit light, so when the well cover of the cellar well is lost, the light of the lighting lamp can shine on the top of the ground, and then passers-by on the ground can see the light, indicating that the well cover of the cellar well is lost here, reminding passers-by to go around. OK.

Embodiment 7. The difference between Embodiment 7 and Embodiment 1 is that the sensing device 5 is provided with a plurality of water-permeable holes penetrating up and down. When the well memory is full of water and the water level rises, the sensing device 5 is prevented from being affected by the buoyancy of the water, so a permeable hole is provided on it to allow water to pass through the sensing device 5 without being affected by the buoyancy.

Embodiment 8. The difference between Embodiment 8 and Embodiment 1 is that the load-bearing plate 6 is provided with a plurality of water-permeable holes penetrating up and down. When the well memory is full of water, prevent the load-bearing plate 6 from being affected by the buoyancy of the water, so a water-permeable hole is set on it to allow water to pass through the load-bearing plate 6 without being affected by buoyancy.

Embodiment 9. The difference between Embodiment 8 and Embodiment 1 or Embodiment 8 is that a buffer device is provided inside the load-bearing plate 6. The buffer device can be rubber, an inflatable cushion, a sponge or a spring group, etc. It is used to buffer the human body falling on the carrying plate 4, and reduce the damage caused by the impact force to the human body itself.

A kind of safety device that is used for cellar well of the present invention, its specific working procedure is as follows:

The invention is mainly applied to the well cover being removed and the wellhead of the well is exposed. At this time, someone falls, and the sensing device senses that the person falls and immediately sends a sensing signal to the controller, and the controller controls the load-bearing plate to turn the plate into a flat plate to catch the falling person. ;

Then, the controller controls the lifting device to lift the load-bearing plate 6 and send the fallen person out of the pit;

In this embodiment, the load-bearing plate 6 and the side wall of the cellar can be connected in various ways, as long as the load-bearing plate 6 is quickly leveled when a fall occurs. Therefore, it can be realized by means of electromagnetic means or hooks.

In daily life, the load-bearing plate 6 can be placed sideways in the well or can be directly laid flat in the well. The way of direct laying only needs to be opened at the top when the maintenance personnel enter and exit, which is safer than the way of standing sideways.

Claims (7)

1. The safety device for the pit comprises a pit cover and is characterized by also comprising a controller (1), a lifting device (2), a lifting device driving motor (3), two guide rails (4), an induction device (5) and a bearing carrier plate (6),

the well cover is used for sealing the well mouth of the pit; the two guide rails (4) are oppositely arranged on the side wall of the pit;

the load bearing plate (6) is connected with the side wall of the pit in a way that one side of the load bearing plate turns over the plate to be horizontal; in a state that the turning plate of the bearing carrier plate (6) is horizontal, the bearing carrier plate (6) is buckled on the two guide rails (4) through a group of notches on the opposite side edges of the bearing carrier plate, and can do lifting movement along the guide rails (4);

the induction device (5) is arranged on the side wall of the pit through a fixing frame (7) and is positioned at the wellhead of the pit; the sensing device (5) is used for sensing the falling of the human body into the pit, and the signal output end of the sensing device (5) is connected with the sensing signal input end of the controller (1); the motor driving control signal output end of the controller (1) is connected with the driving control signal input end of the lifting device driving motor (3); the lifting device driving motor (3) is used for driving the lifting device (2) to do lifting motion along the guide rail;

the controller (1) controls the turnover plate of the load bearing plate (6) to be a flat plate to catch falling personnel; the controller (1) controls the lifting device (2) to lift the load bearing plate (6) and send falling personnel out of the pit;

the concrete structure of the bearing carrier plate (6) which is connected with the side wall of the pit in a way that one side turning plate is horizontal is that one point on the side edge of the bearing carrier plate (6) is connected with one end of a hinge; an electromagnetic relay (8) is arranged on the side wall of the pit, and the electromagnetic relay (8) is used for adsorbing the other end of the hinge; the control signal input end of the electromagnetic relay control coil is connected with the control signal output end of the relay control coil of the controller (1);

a plurality of water permeable holes which are vertically communicated are arranged on the induction device (5).

2. A safety device for a pit according to claim 1, characterized in that a pair of lifting devices (2) are mounted on two guide rails (4) respectively and can be moved up and down along the guide rails (4); a pair of lifting device driving motors (3) are respectively arranged on the two guide rails (4); the lifting devices (2) on the same side are fixed above the lifting device driving motor (3).

3. A safety device for a pit according to claim 1 or 2, characterized in that the guide rail (4) is internally provided with a rack, the lifting device driving motor (3) is fitted with a driving gear through a reducer transmission, and the driving gear is meshed with the rack.

4. A safety arrangement for a pit according to claim 3, characterized in that the lifting device drive motor (3) is a stepper motor.

5. A safety device for a pit according to claim 1, characterized in that the upper surface of the sensing device (5) is transparent, and that the interior of the sensing device (5) is provided with a lighting lamp.

6. A safety device for a pit according to claim 1, characterized in that the load bearing plate (6) is provided with a plurality of water permeable holes penetrating up and down.

7. Safety device for a pit according to claim 1 or 6, characterized in that the inside of the load bearing plate (6) is provided with a buffer device.