CN219143561U - Be used for clean bench wire rope fracture alarm device in advance - Google Patents

Abstract

The utility model discloses a steel wire rope breakage pre-alarm device for a clean bench, and relates to the technical field of clean benches. The device comprises a table body, a pre-warning device and a controller, wherein the controller is connected with the pre-warning device, the pre-warning device comprises an induction component and a blocking component, the induction component is respectively arranged on a balancing weight and a glass plate in the table body, the glass plate drives the balancing weight to move through a steel wire rope and can trigger the induction component, and the controller restricts the movement of the glass plate through the blocking component according to the feedback of the induction component. The utility model detects whether the steel wire rope is prolonged or not to pre-alarm by matching the magnet and the magnetic sensor, and the glass plate cannot be pushed upwards again by starting the electromagnetic push rod, so that the glass door cannot be opened, the use safety is improved, and personnel are forced to replace the steel wire rope in time so as to avoid the problem of falling of the door body.

Description

Be used for clean bench wire rope fracture alarm device in advance

Technical Field

The utility model relates to the technical field of clean benches, in particular to a steel wire rope fracture pre-alarm device for a clean bench.

Background

The clean workbench is air purifying equipment for providing local dust-free and aseptic working environment, is widely applied to the related industries of biological laboratories, medical and health care, biological pharmacy and the like, and has good effects of improving process conditions, protecting the physical health of operators and improving the product quality and yield. At present, three main lifting modes of the front window glass of the clean bench are as follows: balance weight, coil spring, and tubular motor drive. The coil spring with the coil spring structure is easy to generate fatigue damage, the tubular motor has higher driving cost, and under the condition of power failure, the glass front door cannot be pulled down, so that the balancing weight balancing structure is used as a relatively reliable and low-cost structure, and is widely used in clean bench products in a large number.

The balancing weight balancing structure is that a counter weight iron with the same weight as the glass is hung on the other side of the glass, the glass is connected with the counter weight iron through a steel wire rope, and the steel wire rope is pressed on a pulley in a penetrating way, so that the sliding of the front window glass is finally realized. However, under the conditions of poor quality of the steel wire rope and high-frequency use of experimenters, the phenomenon of fatigue fracture of the steel wire rope is easy to occur, the glass door is blocked if the steel wire rope is light, the life safety of the experimenters is threatened if the glass door of the clean bench falls and is crashed in recent years in China.

The steel wire rope used in the method is formed by spiral twisting a certain number of steel wires, and partial steel wire breakage and strand scattering phenomena generally occur in the initial stage of fatigue fracture of the steel wires. The tensile force of the wire rope at the stranding side affects that the corresponding length of the wire rope can be prolonged, and finally the distance between the front window glass plate and the balancing weight is increased.

Disclosure of Invention

Aiming at the problems that when the steel wire rope of the clean bench is subjected to fatigue fracture, the steel wire rope cannot be found in time and potential safety hazards exist, the utility model provides a pre-alarm device for the breakage of the steel wire rope of the clean bench.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a be used for clean bench wire rope fracture alarm device in advance, includes stage body, alarm device and controller, the controller is connected with alarm device, alarm device includes sensing part and blocks the part, balancing weight in the stage body is provided with respectively with the glass board sensing part, the glass board passes through wire rope and drives the balancing weight removes and can trigger sensing part, the controller is according to sensing part's feedback, through block the part constraint the removal of glass board.

Further, the induction component comprises a magnet and a magnetic sensor, a plurality of magnets are arranged on the balancing weight and the glass plate, a plurality of magnetic sensors are arranged on the table body, and the positions of the magnetic sensors are in one-to-one correspondence with the positions of the magnets.

Further, the magnet comprises a first magnet and a second magnet, the magnetic sensor comprises a first magnetic sensor and a second magnetic sensor, the first magnet corresponds to the first magnetic sensor, the second magnet corresponds to the second magnetic sensor, the first magnet is detachably fixed on the glass plate, and the second magnet is detachably fixed on the balancing weight.

Further, the left side and the right side of the balancing weight are respectively provided with the second magnet.

Further, the blocking member includes an electromagnetic push rod disposed above the glass sheet.

Further, the first magnet is in contact with the first magneto-dependent sensor to generate a first feedback signal and transmit the first feedback signal to the controller. The second magnet is in contact with the second magnetosensitive body to generate a second feedback signal, and the second feedback signal is transmitted to the controller.

Further, the controller only receives the first feedback signal, and then controls the electromagnetic push rod to extend out.

Further, the controller receives the first feedback signal and the second feedback signal at the same time, and then controls the electromagnetic push rod to retract.

Further, the controller receives the first feedback signal and the second feedback signal at the same time, so that the ultraviolet lamp in the platform body can be controlled to be started.

The beneficial effects of the utility model are as follows: the utility model detects whether the steel wire rope is prolonged or not to pre-alarm by matching the magnet and the magnetic sensor, and the glass plate cannot be pushed upwards again by starting the electromagnetic push rod during pre-alarm, and the ultraviolet lamp cannot be started at the same time, so that the use safety is enhanced and personnel are reminded of timely replacing the steel wire rope.

Drawings

Fig. 1 is a schematic diagram of the structural principle of an embodiment of the present utility model.

Fig. 2 shows a side view of fig. 1.

Figure 3 shows a cross-sectional view of an embodiment of the present utility model.

Fig. 4 shows a side view of fig. 3.

Fig. 5 shows a partial enlarged view at a in fig. 4.

FIG. 6 is a schematic diagram showing the connection of a glass plate to a counterweight.

Fig. 7 is a control flow diagram of an embodiment of the present utility model.

Detailed Description

The utility model discloses a pre-alarm device for breakage of a steel wire rope of a clean bench, which is characterized in that the breakage strand scattering phenomenon occurs in the initial stage of fatigue breakage of the steel wire rope, and the tensile strength of the scattered steel wire rope is reduced, so that the length of the scattered steel wire rope is prolonged. The utility model pre-alarms the breakage of the steel wire of the clean bench through the length change of the steel wire rope, and an embodiment of the utility model is specifically described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, a pre-alarm device for breakage of a steel wire rope of a clean bench comprises a bench body 1, an alarm device and a controller, wherein the bench body 1 is provided with a glass plate 2 and a balancing weight 3, the glass plate 2 and the balancing weight 3 are connected through the steel wire rope, and the alarm device comprises an induction part and a blocking part. The sensing component comprises a first magnet 5, a second magnet 6, a first magneto-dependent sensor and a second magneto-dependent sensor 7, wherein the first magnet 5 corresponds to the first magneto-dependent sensor, and the second magnet 6 corresponds to the second magneto-dependent sensor 7.

In order to better detect the length change of the steel wire rope, in this embodiment, the left side and the right side of the upper portion of the glass plate 2 are detachably and fixedly connected with first magnets 5 respectively at positions adjacent to the steel wire rope, the first magnetic sensors are detachably fixed at positions in front of the table body 1 respectively, and the positions of the first magnetic sensors can correspond to the positions of the first magnets 5 one by one. The second magnets 6 are detachably fixed on the left side and the right side of the upper part of the balancing weight 3 and are adjacent to the steel wire ropes, the second magnetic sensors 7 are detachably fixed at the positions of the rear part of the table body 1, and the positions of the second magnetic sensors can correspond to the positions of the second magnets 6 one by one. As shown in fig. 3 and 4, the blocking component is an electromagnetic push rod 4 in this embodiment, the electromagnetic push rod 4 is located above the glass plate 2 and is detachably and fixedly connected with the front part of the table body 1, and the controller is respectively connected with the first magnetic sensor, the second magnetic sensor 7 and the electromagnetic push rod 4 in a control manner. The first magnet 5 can generate a first feedback signal in contact with a first magneto-dependent sensor, which can transmit the first feedback signal to the controller. As shown in fig. 5, the contact of the second magnet 6 with the second magneto-dependent sensor 7 can generate a second feedback signal, which the second magneto-dependent sensor 7 can transmit to the controller.

Before use, as shown in fig. 6, the operator needs to pull down the glass plate 2 to the table surface according to the use specification and turn on the ultraviolet lamp to perform the sterilization operation, and the controller is in control connection with the ultraviolet lamp. The glass plate 2 positioned at the front side of the table body 1 is pulled downwards, and the balancing weight 3 moves upwards along with the pulling of the steel wire rope. As shown in fig. 7, when the glass plate 2 is drawn to the table surface, the first magnets 5 on the left and right sides of the upper portion of the glass plate 2 are respectively contacted with the first magneto-sensitive sensors located on the inner side of the front portion of the table body 1, and generate two first feedback signals. The second magnets 6 on the left and right sides of the upper part of the balancing weight 3 are respectively contacted with the second magneto-sensitive sensors 7 positioned on the inner side of the rear part of the table body 1, and generate two second feedback signals. If the controller receives the two first feedback signals and the two second feedback signals at the same time, the controller indicates that the condition of the steel wire rope is good and the steel wire rope can be normally used, and the controller enables the electromagnetic push rod 4 to be in a power-off shrinkage state at the moment. And the ultraviolet lamp can be normally started to perform sterilization operation.

When the glass plate 2 is pulled down to the working table, each first magnet 5 is contacted with each first magneto-sensitive sensor to generate two first feedback signals. If the wire rope is broken and strapped, the length of the wire rope is prolonged, so that the second magnet 6 cannot be contacted with the second magnetic sensor 7 or only one side of the second magnet 6 is contacted with the second magnetic sensor 7, the controller receives two first feedback signals, and only one second feedback signal is received or the second feedback signal is not received, the wire rope is indicated to be strapped and cannot be normally used, and pre-alarm is carried out. When alarming in advance, the electromagnetic push rod 4 that the controller control is located glass board 2 top stretches out, hinders glass board 2 upward movement and makes personnel unable push-and-pull glass board 2 upward, can strengthen safety in utilization and force the user to in time change wire rope to the door body problem that drops does not appear. When the steel wire rope is replaced, the controller can receive the two first feedback signals and the two second feedback signals simultaneously, the controller controls the electromagnetic push rod 4 to retract, the glass plate 2 can be pushed and pulled up and down normally, and the ultraviolet lamp can be started normally at the moment.

It should be understood that the above description is not intended to limit the utility model to the particular embodiments disclosed, but to limit the utility model to the particular embodiments disclosed, and that the utility model is not limited to the particular embodiments disclosed, but is intended to cover modifications, adaptations, additions and alternatives falling within the spirit and scope of the utility model.

Claims (9)

1. Be used for clean bench wire rope fracture alarm device in advance, its characterized in that: including stage body (1), alarm device and controller, the controller is connected with alarm device, alarm device includes sensing element and blocks the part, balancing weight (3) in stage body (1) respectively are provided with glass board (2) sensing element, glass board (2) drive through wire rope balancing weight (3) remove and can trigger sensing element, the controller is according to sensing element's feedback, through blocking the part constraint glass board (2) remove.

2. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 1, wherein: the induction component comprises magnets and magnetic sensors, a plurality of magnets are arranged on the balancing weights (3) and the glass plates (2), a plurality of magnetic sensors are arranged on the table body (1), and the positions of the magnetic sensors are in one-to-one correspondence with the positions of the magnets.

3. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 2, wherein: the magnet comprises a first magnet (5) and a second magnet (6), the magnetic sensor comprises a first magnetic sensor and a second magnetic sensor (7), the first magnet (5) corresponds to the first magnetic sensor, the second magnet (6) corresponds to the second magnetic sensor (7), the first magnet (5) is detachably fixed on the glass plate (2), and the second magnet (6) is detachably fixed on the balancing weight (3).

4. A pre-alarm device for breakage of a steel wire rope of a clean bench according to claim 3, wherein: the left side and the right side of the balancing weight (3) are respectively provided with the second magnet (6).

5. A pre-alarm device for breakage of a steel wire rope of a clean bench according to claim 3, wherein: the blocking component is an electromagnetic push rod (4), and the electromagnetic push rod (4) is arranged above the glass plate (2) and is detachably and fixedly connected with the table body (1).

6. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 5, wherein: the first magnet (5) is contacted with a first magneto-dependent sensor to generate a first feedback signal, and the first feedback signal is transmitted to the controller;

the second magnet (6) is in contact with the second magnetosensitive body to generate a second feedback signal and transmit the second feedback signal to the controller.

7. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 6, wherein: and the controller only receives the first feedback signal, and controls the electromagnetic push rod (4) to extend.

8. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 6, wherein: and the controller receives the first feedback signal and the second feedback signal simultaneously, and controls the electromagnetic push rod (4) to retract.

9. The pre-alarm device for breakage of steel wire rope of clean bench according to claim 6, wherein: the controller receives the first feedback signal and the second feedback signal at the same time, and can control the ultraviolet lamp in the table body (1) to be started.

Images