Azimuth safety interlocking device for preventing azimuth rotation of rotating equipment from crossing boundary

Abstract

The utility model relates to the technical field of safety interlocking, in particular to an orientation safety interlocking device for preventing orientation rotation of rotating equipment from crossing a boundary, a circuit of the safety interlocking device comprises a starting signal loop and a rotating equipment cabin door safety circuit, and the starting signal loop and the rotating equipment cabin door safety circuit are connected in series through a cable. The starting signal loop is used for providing a signal for a rotating equipment cabin door safety circuit; two normally-closed magnetic Hall inductive switches are additionally arranged on a safety circuit of a cabin door of the rotating equipment, the mounting positions of the normally-closed magnetic Hall inductive switches are set to be rotation forbidding areas, and the positions between strong magnets and the normally-closed magnetic Hall inductive switches are utilized to control on-off of a starting signal working link. The equipment does not damage the original safety line, has universal interfaces, is safe and reliable, has strong adaptability, can be customized according to requirements, is portable and quick to install, greatly improves the safety and reliability of the rotating equipment, and reduces the occurrence probability of safety accidents.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of safety interlocking, especially a position safety interlocking device for preventing the rotation of a rotating device beyond the boundary. BACKGROUND

[0002] A rotating device is a device that can rotate an object around a fixed axis, and is widely used in various applications, including mechanical engineering, automated production, scientific research experiments, and other fields. A control switch is a common electronic circuit component, usually used to control the on-off state of a circuit or select different circuit paths, and connects or disconnects different contacts through rotation to achieve the control function of the circuit. A safety interlocking device is an automatic device used to improve the safety of position rotation, and is an effective measure to prevent misoperation by having a mechanical or electrical mechanism that restricts two actions. In the production process, interlocking devices are widely used to ensure normal operation, achieve automatic control, and prevent accidents. Common safety interlocking devices include electrical operation safety interlocking devices, hydraulic operation safety interlocking devices, and combined operation safety interlocking devices.

[0003] In recent years, domestic and foreign experts and scholars have proposed a series of solutions to the problem of safety interlocking of rotating devices, but none of them are perfect. For example, the invention patent with the application publication number CN111608501A discloses a "high-velocity gun safety lock", which has a lock, a dial mechanism, a transmission mechanism, and a locking mechanism to solve the problem of lack of safety due to the inability to lock the high-velocity gun and the ability of anyone to operate the gun. The utility model patent with the application publication number CN219223488U authorizes a "weather high-velocity gun locking device", which starts the servo motor when the high-velocity gun needs to be locked, causing the lock rod to move up and away from the right side of the lock slot, and through the servo motor, the lock rod moves down and is clamped in the left side of the lock slot to fix the latch, making the latch more secure for the high-velocity gun, preventing the latch from shaking and affecting the security of the high-velocity gun. The structure design is reasonable, the structure is simpler, and it is beneficial to maintenance work in the future. In summary, the above-mentioned patents mainly focus on the structural design method of the rotating device locking device, which uses the linkage between the transmission structure, the latch, and the actuator to complete the locking, but none of them involve the circuit system design of the rotating device safety interlocking. It is necessary to study how to safely, conveniently, and flexibly realize the rotation of the rotating device in the process of using the rotating device, and due to the use of the site and environment, there are some angles that have a large safety factor, and the rotating device itself does not have the problem of limiting the position angle, which easily hits nearby objects or personnel, has poor safety protection ability, and is prone to safety accidents. UTILITY MODEL CONTENT

[0004] The utility model discloses a main purpose provides a kind of for rotating equipment prevents azimuth rotation over limit azimuth safety interlock device, to solve the rotating equipment itself does not have azimuth angle limit problem in relevant technology, it is easy to impact nearby object or personnel problem.

[0005] In order to achieve the above object, according to an aspect of the utility model, provide a kind of for rotating equipment prevents azimuth rotation over limit azimuth safety interlock device, including: safety interlock device circuit, the safety interlock device circuit is connected with DC28V voltage, the safety interlock device circuit includes start signal loop and rotating equipment cabin door safety circuit, the start signal loop is connected with rotating equipment cabin door safety circuit by cable, the start signal loop is used to provide signal for rotating equipment cabin door safety circuit, the rotating equipment cabin door safety circuit includes inductive switch group and hall sensor switch, the inductive switch group is installed in the forbidden rotation area of rotating equipment, when rotating equipment cabin door is closed, the inductive switch group is outside when forbidden rotation angle, rotating equipment can be normally started;When the inductive switch group rotates to forbidden rotation angle area, hall sensor switch works, the start circuit of safety interlock device circuit is disconnected, and rotating equipment stops rotating.

[0006] Further, the start signal loop includes rotary contact device, button group, contact group and switch group, the cable connects rotary contact device, button group, contact group and switch group, the button group includes start button and stop button, the contact group includes contact 3K5B, relay 3K1A and contact 3KA1, and the switch group includes azimuth fixer change-over switch, azimuth manual change-over switch, high-low fixer change-over switch and high-low manual change-over switch.

[0007] Further, the contact 3KA1 is connected in parallel with start button and then connected in series with stop button, the stop button is connected in series with contact 3K5B and relay 3K1A, and the relay 3K1A is connected in series with rotating equipment cabin door safety circuit through rotary contact device.

[0008] Further, the azimuth fixer change-over switch, azimuth manual change-over switch, high-low fixer change-over switch and high-low manual change-over switch are connected in series, the azimuth fixer change-over switch is connected in series with rotating equipment cabin door safety circuit through rotary contact device, and the high-low manual change-over switch is grounded.

[0009] Further, the inductive switch group comprises a first normally closed magnetic Hall inductive switch and a second normally closed magnetic Hall inductive switch, the first normally closed magnetic Hall inductive switch and the second normally closed magnetic Hall inductive switch are connected in series with the Hall sensor switch, the rotating equipment cabin door safety circuit further comprises an aviation plug, a relay KA1 and two strong magnets, the relay KA1 is connected with a DC 28V voltage and connected in series with the first normally closed magnetic Hall inductive switch, and the aviation plug is connected in series between the second normally closed magnetic Hall inductive switch and the Hall sensor switch.

[0010] Further, the Hall sensor switch is grounded.

[0011] Further, the first normally closed magnetic Hall inductive switch and the second normally closed magnetic Hall inductive switch are constructed in the same way, and the first normally closed magnetic Hall inductive switch comprises a power supply E, a switch K, a resistor R and a magnetic induction coil.

[0012] Further, the power supply E, the switch K, the resistor R and the magnetic induction coil are connected in series, the power supply E provides power for the magnetic induction coil, and the strong magnets are respectively located on one side of the corresponding magnetic induction coil.

[0013] Compared with the prior art, the utility model has the following beneficial effects: two normally closed magnetic Hall inductive switches are additionally arranged on the rotating equipment cabin door safety circuit, the installation positions of the two normally closed magnetic Hall inductive switches are set as the prohibited rotation area, the position between the strong magnet and the normally closed magnetic Hall inductive switch is utilized to control the opening and closing of the safety interlocking circuit, and the opening and closing of the starting signal working link is controlled. The equipment does not damage the original safety circuit, the interface is universal, safe and reliable, and has strong adaptability, and can be customized, portable and quickly installed according to requirements, so that the safety reliability of the rotating equipment is greatly improved, and the probability of safety accidents is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a safety interlocking device circuit diagram of the utility model;

[0015] Fig. 2 It is a normally closed magnetic Hall inductive switch working principle diagram of the utility model;

[0016] Fig. 3 It is a normally closed magnetic Hall inductive switch DC two-wire normally closed magnetic sensor working principle diagram of the utility model.

[0017] ILLUSTRATIVE DESCRIPTION:

[0018] 1 cable; 2 aviation plug; 3 first normally closed magnetic hall inductive switch; 4 second normally closed magnetic hall inductive switch; 5 strong magnet; 6 quick plug; 7 portable support; 8 hall sensor switch; 9 rotary contact device; 10 azimuth fixer transfer switch; 11 azimuth manual transfer switch; 12 high-low fixer transfer switch; 13 high-low manual transfer switch; 14 start button; 15 stop button; 16 magnetic induction coil. DETAILED DESCRIPTION

[0019] In order to further illustrate the technical means and effects taken by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0020] Please refer to Figs. 1 to 3 The embodiment provides an azimuth safety interlocking device for preventing the rotation of a rotating device from exceeding the boundary of an azimuth, which comprises a safety interlocking device circuit, a DC 28V voltage connected to the safety interlocking device circuit, a start signal loop and a rotating device cabin door safety circuit included in the safety interlocking device circuit, the start signal loop and the rotating device cabin door safety circuit being connected in series through a cable 1, the start signal loop being used for providing a signal for the rotating device cabin door safety circuit, the rotating device cabin door safety circuit comprising an inductive switch group 3, 4 and a hall sensor switch 8, the inductive switch group 3, 4 being installed in a prohibited rotation area of the rotating device, when the rotating device cabin door is closed and the inductive switch group 3, 4 is outside the prohibited rotation angle, the rotating device can be normally started, and when the inductive switch group 3, 4 rotates to the prohibited rotation angle area, the hall sensor switch 8 works, the start circuit of the safety interlocking device circuit is disconnected, and the rotating device stops rotating.

[0021] The start signal loop comprises a rotary contact device 9, a button group 14, 15, a contact group and a switch group 10, 11, 12, 13, the cable 1 connects the rotary contact device 9, the button group 14, 15, the contact group and the switch group, the button group 14, 15 comprises a start button 14 and a stop button 15, the contact group comprises a contact 3K5B, a relay 3K1A and a contact 3KA1, and the switch group 10, 11, 12, 13 comprises an azimuth fixer transfer switch 10, an azimuth manual transfer switch 11, a high-low fixer transfer switch 12 and a high-low manual transfer switch 13.

[0022] The contact 3KA1 is connected in parallel with the start button 14 and then connected in series with the stop button 15, the stop button 15 is connected in series with the contact 3K5B and the relay 3K1A, and the relay 3K1A is connected in series with the rotating device cabin door safety circuit through the rotary contact device 9.

[0023] The azimuth fixer switch 10, the azimuth manual switch 11, the height fixer switch 12 and the height manual switch 13 are connected in series, the azimuth fixer switch 10 is connected in series with the rotating equipment cabin door safety circuit through the rotary contact device 9, and the height manual switch 13 is grounded.

[0024] The inductive switch group 3, 4 comprises a first normally closed magnetic Hall inductive switch 3 and a second normally closed magnetic Hall inductive switch 4, the first normally closed magnetic Hall inductive switch 3 and the second normally closed magnetic Hall inductive switch 4 are connected in series with the Hall sensor switch 8, and the rotating equipment cabin door safety circuit further comprises an aviation plug 2, a relay KA1 and two strong magnets 5, the relay KA1 is connected with a DC 28V voltage and connected in series with the first normally closed magnetic Hall inductive switch 3, and the aviation plug 2 is connected in series between the second normally closed magnetic Hall inductive switch 4 and the Hall sensor switch 8.

[0025] The Hall sensor switch 8 is grounded, so that the device is connected in series in the safety interlocking working circuit, and the safety protection capability is enhanced.

[0026] The first normally closed magnetic Hall inductive switch 3 and the second normally closed magnetic Hall inductive switch 4 are constructed identically, and the first normally closed magnetic Hall inductive switch 3 comprises a power supply E, a switch K, a resistor R and a magnetic induction coil 16.

[0027] The power supply E, the switch K, the resistor R and the magnetic induction coil 16 are connected in series, the power supply E provides power for the magnetic induction coil 16, the strong magnets 5 are respectively located on one side of the corresponding magnetic induction coil 16, and when the two strong magnets 5 are in the original position, they are away from the first normally closed magnetic Hall inductive switch 3 and the second normally closed magnetic Hall inductive switch 4, when the rotating equipment cabin door is closed, the relay KA1 works, the normally open contact thereof is closed, and the starting signal loop is turned on.

[0028] When the start button 14 is pressed, the DC 28V voltage is connected to the start button 14, the stop button 15, the contact 3K5B and the relay 3K1A, the contact 3KA1 is closed, the start signal loop is turned on, and the start signal is generated; the start signal is connected to the relay KA1, the rotary contact device 9 and the azimuth fixer switch 10, the azimuth fixer switch 10 is turned on, and is connected to the machine state through the azimuth manual switch 11, and then is connected to the ground through the high-low fixer switch 12 and the high-low manual switch 13; when the relay 3K1A is powered on, the normally open contact is closed, the self-protection function is started, and the start signal is kept on; the contact 3KA1 obtains the start signal through the interlocking and isolation plate of the control box, and sends a start instruction, and high voltage is added to the driver, so that the system is successfully started; when one of the strong magnets 5 approaches the first normally closed magnetic Hall inductive switch 3 or the second normally closed magnetic Hall inductive switch 4, the corresponding Hall sensor switch 8 is disconnected, that is, the safety interlocking circuit is disconnected, so that the start signal loop is disconnected, and the rotation angle of the rotating device is limited.

[0029] The safety interlocking device is also provided with a quick plug 6 and a portable support 7, the quick plug 6 is connected with the safety interlocking device circuit, external power supply can be connected into the safety interlocking device circuit, the portable support 7 is installed outside the safety interlocking device, the safety interlocking device can be supported at a set position, and the safety rotation angle range of the rotating device can be adjusted by moving the position of the portable support 7, so that the rotation angle of the rotating device is effectively controlled.

[0030] The azimuth safety interlocking device adopts a universal interface design and can be adapted to the device interfaces of different devices.

[0031] The Hall sensor of the utility model is a sensor that can sense magnetic field, and the Hall switch sensor plays an important role in many fields with its simple and effective principle. When current passes through a conductor, the magnetic field in the vertical direction will cause the deflection of electrons, thereby generating a voltage difference on both sides of the conductor, realizing the switching function. Since the Hall switch sensor output is a simple 1-bit digital signal, the chip structure is relatively simple, and therefore it has an advantage in cost-effectiveness.

[0032] The magnet of the azimuth safety interlocking device has a great influence on the working of the Hall switch, a large magnetic field can cause misoperation, and a small magnetic field can cause the switch to be insensitive. The size of the magnetic field directly affects the sensing effect of the Hall switch. If the magnetic field is too large, the Hall switch will misoperate, and if the magnetic field is too small, the switch will be insensitive. The position arrangement of the magnet and the Hall switch is also an important factor affecting the sensitivity of the switch. If the magnet position deviates too far from the Hall switch, the strength of the induced magnetic field will be reduced, thereby causing the switch to be insensitive.

[0033] When a semiconductor material is placed in a magnetic field, it experiences a Hall electric field that produces a voltage perpendicular to the directions of the electric and magnetic fields, called the Hall voltage, which is proportional to the magnetic field strength and the current. In a magnetic field, the direction of the Hall voltage depends on the direction of the current. When the current flows along the length of the material, the voltage produced by the Hall electric field will be perpendicular to the plane of the material. When the current is perpendicular to the plane of the material, the voltage produced by the Hall electric field will be parallel to the plane of the material.

[0034] In magnetism, the Hall effect is used to measure the strength of a magnetic field. When a current I flows through a conductor in the x-direction, a magnetic field B acts on the conductor in the z-direction, then the charge carriers will be deflected in the y-direction under the action of the Lorentz force, thereby forming a potential difference VH, i.e. the Hall voltage, on both sides of the conductor. According to the principle of the Hall effect, the Hall voltage VH can be expressed as:

[0035] VH = RH * (I / d) * B

[0036] where RH is the Hall coefficient, which is a characteristic parameter of the conductor material; I is the current through the conductor; d is the thickness of the conductor; B is the magnetic induction strength.

[0037] The relay multiway switch in the electrical circuit generally has multiple normally open points and multiple normally closed points, which are used to control the automatic operation and stop of the electrical equipment. When the circuit is not connected, some switch points are in the on state, while the other switch points are in the off state. When the circuit is connected, the original on switch changes to the off state, and the off switch changes to the on state. The contacts of the switch are in the open state, i.e. "normally open", and vice versa, the contacts of the switch are in the closed state, i.e. "normally closed". The working principle of the DC two-wire proximity switch: the DC two-wire proximity switch is used to detect the proximity or presence of non-metallic materials such as metal, plastic, paper, etc. When the detected object approaches the proximity switch, the current in the inductor changes, and after processing by the amplification circuit, the control switch operates. Generally, after the switch operates, it will cut off the DC two-wire, and no interference will be generated.

[0038] The magnetic Hall switch DC two-wire normally closed magnetic sensor in the embodiment is a magnetic sensor composed of a voltage regulator, a Hall voltage generator, a differential amplifier, a Schmidt trigger, and a collector open output stage. Its input is the magnetic induction strength, and its output is a digital voltage signal. Its characteristics are wide power voltage range, high frequency, long service life, small size, easy installation, and can directly interface with transistors and TTL MOS logic circuits, and can achieve ultra-long distance 10cm sensing.

[0039] According to the equipment requirement, the portable and quickly installed magnetic support can be designed, the safety rotating angle range of the rotating equipment is adjusted by moving the position of the magnetic portable support 7 or the strong magnet 5, and the rotating angle of the rotating equipment is effectively controlled.

[0040] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A directional safety interlock device for preventing rotating equipment from exceeding its directional rotation limit, characterized in that, The device includes a safety interlocking circuit connected to a DC 28V voltage. The safety interlocking circuit includes a start signal circuit and a rotating equipment door safety line. The start signal circuit and the rotating equipment door safety line are connected in series via a cable (1). The start signal circuit is used to provide a signal to the rotating equipment door safety line. The rotating equipment door safety line includes an inductive switch group (3, 4) and a Hall sensor switch (8). The inductive switch group (3, 4) is installed in the prohibited rotation area of ​​the rotating equipment. When the rotating equipment door is closed and the inductive switch group (3, 4) is outside the prohibited rotation angle, the rotating equipment can start normally. When the inductive switch group (3, 4) rotates into the prohibited rotation angle area, the Hall sensor switch (8) works, the start line of the safety interlocking circuit is disconnected, and the rotating equipment stops rotating.

2. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 1, characterized in that, The start signal circuit includes a rotary contact device (9), a button group (14, 15), a contact group, and a switch group (10, 11, 12, 13). The cable (1) connects the rotary contact device (9), the button group (14, 15), the contact group, and the switch group. The button group (14, 15) includes a start button (14) and a stop button (15). The contact group includes a contact 3K5B, a relay 3K1A, and a contact 3KA1. The switch group (10, 11, 12, 13) includes an orientation fixer switch (10), an orientation manual switch (11), an elevation fixer switch (12), and an elevation manual switch (13).

3. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 2, characterized in that, The contact 3KA1 is connected in parallel with the start button (14) and then in series with the stop button (15). The stop button (15) is connected in series with the contact 3K5B and the relay 3K1A. The relay 3K1A is connected in series with the safety circuit of the rotating equipment door through the rotary contact device (9).

4. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 2, characterized in that, The orientation fixation switch (10), orientation manual switch (11), elevation fixation switch (12), and elevation manual switch (13) are connected in series. The orientation fixation switch (10) is connected in series with the safety line of the rotating equipment door through the rotary contact device (9). The elevation manual switch (13) is grounded.

5. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 1, characterized in that, The inductive switch group (3, 4) includes a first normally closed magnetic Hall inductive switch (3) and a second normally closed magnetic Hall inductive switch (4). The first normally closed magnetic Hall inductive switch (3) and the second normally closed magnetic Hall inductive switch (4) are connected in series with the Hall sensor switch (8). The rotating equipment door safety circuit also includes an aviation plug (2), a relay KA1 and two strong magnets (5). The relay KA1 is connected to a DC28V voltage and is connected in series with the first normally closed magnetic Hall inductive switch (3). The aviation plug (2) is connected in series between the second normally closed magnetic Hall inductive switch (4) and the Hall sensor switch (8).

6. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 1, characterized in that, The Hall sensor switch (8) is grounded.

7. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 5, characterized in that, The first normally closed magnetic Hall sensor switch (3) and the second normally closed magnetic Hall sensor switch (4) have the same structure. The first normally closed magnetic Hall sensor switch (3) includes a power supply E, a switch K, a resistor R and a magnetic induction coil (16).

8. The azimuth safety interlock device for preventing azimuth rotation beyond the limit in rotating equipment according to claim 7, characterized in that, The power supply E, switch K, resistor R and magnetic induction coil (16) are connected in series. The power supply E provides electrical energy to the magnetic induction coil (16). The strong magnets (5) are located on one side of the corresponding magnetic induction coil (16).

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