Safety device of material mixing machine

Abstract

The utility model relates to a safety device of a material mixing machine, which comprises a control box, a first rack, a second rack, a rotary body arranged between the first rack and the second rack, and a rotary speed reducer arranged at the upper part of the first rack, it is guaranteed that equipment can be started only when the area between the first rack and the second rack is completely blank, the detachable supporting frame is arranged on the lower portion of the rotary body, the hydraulic device is prevented from breaking down in the discharging process, the rotary body is prevented from falling off to hurt people, and a special supporting frame containing area is arranged on one side of the material mixing machine. Before the material mixing machine is started, the detachable supporting frame is moved to the special area, and then the material mixing machine can have the starting condition.

Description

Technical Field

[0001] The utility model relates to the field of automatic hoist mixer, in particular to a safety device for a material mixer. Background Art

[0002] When raw materials are processed, mixers are often indispensable. An automatic hoist mixer and multiple mixing hoppers of different specifications can meet the mixing requirements of large quantities and multiple varieties. During operation, the mixing hopper is pushed into the rotating body, and by pressing the "confirm" button on the touch screen, the mixing hopper can be automatically lifted in place and automatically clamped. After the pressure sensor obtains the clamping signal, it drives the mixing system to work. The mixing system mixes according to the set time and speed. After reaching the set parameters, the rotating body can automatically stop vertically.

[0003] However, the rotating body of the material mixer relies on a hydraulic device to maintain the discharging height, without considering the potential safety hazard of the sudden dropping of the rotating body due to a hydraulic device failure. Moreover, the optoelectronic switch installed on the lifting frame of the material mixer is at a relatively high position and has linear emission detection, with a small detection area. Sometimes, there are some sundries piled under the material mixer, but the equipment still operates, failing to achieve the purpose of protection. Summary of the Utility Model

[0004] Currently, the problems existing in the prior art are the potential safety hazards of the sudden dropping of the rotating body due to a hydraulic device failure during the discharging of the material mixer and the normal operation of the mixer with sundries at the lower part.

[0005] In view of the above problems, the present invention provides a safety device for a material mixer, which can improve the safety of the material mixer and has a small investment cost.

[0006] Specifically, the present utility model proposes the following technical solutions:

[0007] The present utility model provides a safety device for a material mixer, which is characterized in that it includes a control box 1, a first frame 2, a second frame 3, a rotating body 4 disposed between the first frame 2 and the second frame 3, and a rotary speed reducer 5 on the upper part of the first frame 2;

[0008] Optoelectronic detection components 6 are installed on the sides of the first frame 2 and the second frame 3 adjacent to the rotating body 4. The optoelectronic detection components 6 are composed of a transmitter 9 on the side of the first frame 2 and a receiver 10 on the side of the second frame 3;

[0009] A detachable support frame 16 is disposed at the lower part of the rotating body 4.

[0010] Preferably, for the safety device of the material mixer, the rotating body 4 includes a hopper 7 and a lifting frame 8 located outside the hopper 7.

[0011] Preferably, for the safety device of the material mixer, it is characterized in that the detachable support frame 16 is provided with four liftable screws 17. The upper part of the screw 17 is connected to the hopper 7 through a second nut 19, and the lower part of the screw 17 is connected to the detachable support frame 16 through a first nut 18.

[0012] Preferably, for the safety device of the material mixer, it is characterized in that a special area 22 for placing the support frame is provided on one side of the material mixer. A proximity switch 21 is provided in this area, and the proximity switch 21 is electrically connected to the control box 1.

[0013] Preferably, for the safety device of the material mixer, it is characterized in that a guardrail 20 is provided around the special area 22 for placing the support frame.

[0014] Preferably, for the safety device of the material mixer, it is characterized in that the transmitter 9 is composed of a plurality of transmitting tubes 14, and the receiver 10 is composed of a plurality of receiving tubes 15.

[0015] Preferably, for the safety device of the material mixer, it is characterized in that the control box 1 is electrically connected to the photoelectric detection component 6.

[0016] Advantages of the present utility model:

[0017] In the safety device of the material mixer of the present utility model, the photoelectric detection component increases the detection area. When there are sundries under the hopper or when a person bends down to work, the light curtain signal can be sensed in time, and the equipment cannot be started. When the material mixer discharges materials, a detachable support frame is placed under the hopper to prevent the rotating body from falling and hurting people in case of a hydraulic device failure. Moreover, a special area for placing the detachable support frame is provided beside the material mixer. Before the material mixer is started, the detachable support frame is moved to the designated area. After the proximity switch detects the signal, the material mixer can be started. Description of the drawings

[0018] Figure 1 Shown is a schematic structural diagram of the safety device of the material mixer;

[0019] Figure 2 Shown is a schematic diagram of the special area for placing the support frame;

[0020] Marking descriptions in the figure are as follows: 1 - control box, 2 - first frame, 3 - second frame, 4 - rotating body, 5 - rotating speed reducer, 6 - photoelectric detection component, 7 - hopper, 8 - lifting frame, 9 - transmitter, 10 - receiver, 14 - transmitting tube, 15 - receiving tube, 16 - detachable support frame, 17 - liftable screw, 18 - first nut, 19 - second nut, 20 - guardrail, 21 - proximity switch, 22 - special area for placing the support frame. Detailed implementation manners

[0021] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0022] In the description of this patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this patent. In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0023] In a specific embodiment of the present utility model, the present utility model provides a safety device for a material mixer, which is characterized by comprising a control box 1, a first frame 2, a second frame 3, a rotating body 4 disposed between the first frame 2 and the second frame 3, and a rotating speed reducer 5 on the upper part of the first frame 2;

[0024] Photoelectric detection components 6 are installed on the sides of the first frame 2 and the second frame 3 adjacent to the rotating body 4. The photoelectric detection components 6 are composed of a transmitter 9 on the side of the first frame 2 and a receiver 10 on the side of the second frame 3; a detachable support frame 16 is disposed at the lower part of the rotating body 4; a special area 22 for placing the support frame is provided on one side of the material mixer, and a proximity switch 21 is vertically disposed above this area.

[0025] The present utility model changes the traditional linear opposed photoelectric switch into the form of photoelectric detection components, with a larger protected area, so as to achieve the purpose of protecting the safety of the machine and personnel, effectively preventing people and objects from entering, and eliminating potential safety hazards. The traditional linear opposed photoelectric switch is installed on the upper or lower part of the frame, which is relatively scattered, and for linear emission detection, the detection area is small, and there is a problem of detection blind spots.

[0026] In the present utility model, the optoelectronic detection component 6 generates a coded infrared beam through the emitter 9, the receiver 10 receives the corresponding beam, and a rectangular protection area is formed between the emitter 9 and the receiver 10. When an opaque object enters this area, the corresponding beam is blocked, and the emitter 9 or the receiver 10 generates a light-shielding signal and outputs it to the control box 1, and the control box 1 finally converts the light-shielding signal into a relay output signal.

[0027] In the prior art, the rotating body 4 relies on a hydraulic device to maintain the discharging height, without considering the safety hazard of the sudden dropping of the rotating body due to the failure of the hydraulic device. In the present utility model, a detachable support frame 16 is installed under the rotating body 4, effectively avoiding the sudden dropping of the rotating body 4 and injuring people during discharging. And a special area 22 for placing the support frame is set. Before the material mixer is started, the detachable support frame 16 is moved to the designated area. After the proximity switch 21 detects and sends a signal, the material mixer can be started, further ensuring the safety of the operator.

[0028] Embodiment 1

[0029] As Figure 1 shown, Figure 1 It is a schematic structural diagram of the safety device of the material mixer.

[0030] The safety device of the material mixer includes a control box 1, a first frame 2, a second frame 3, a rotating body 4 arranged between the first frame 2 and the second frame 3, and a rotary speed reducer 5 on the upper part of the first frame 2.

[0031] The optoelectronic detection component 6 is installed on the side surfaces of the first frame 2 and the second frame 3 adjacent to the rotating body 4. The optoelectronic detection component 6 is composed of an emitter 9 on the side surface of the first frame 2 and a receiver 10 on the side surface of the second frame 3; a detachable support frame 16 is arranged at the lower part of the rotating body 4.

[0032] Among them, in a specific embodiment, the emitter 9 is composed of a plurality of emission tubes 14, the receiver 10 is composed of a plurality of receiving tubes 15, and the emission tubes 14 and the receiving tubes 15 are preferably arranged at equal intervals. In a preferred implementation scheme, the control box 1 is electrically connected to the optoelectronic detection component 6 of the safety light curtain. In a preferred implementation scheme, the detachable support frame 16 is provided with four liftable screws 17. The upper part of the screw 17 is connected to the hopper 7 through a second nut 19, and the lower part of the screw 17 is connected to the detachable support frame 16 through a first nut 18. In another preferred implementation scheme, the rotating body 4 includes a hopper 7 and a lifting frame 8 located outside the hopper 7.

[0033] After the photoelectric detection component 6 is switched on, a grating array is formed in the space between the first frame 2 and the second frame 3. When an object enters the grating array, the light is blocked by the object, thereby triggering the output signal of the safety grating and stopping the operation of the machine. Compared with the traditional two sets of opposed linear photoelectric switches, the main advantage after installing the photoelectric detection component 6 is its wide coverage range, which can provide a large-scale safety protection area. The photoelectric detection component 6 also has a self-diagnosis function for faults. The photoelectric detection component can detect objects below 10 mm with high detection accuracy, ensuring the safety of personnel.

[0034] A detachable support frame 16 is provided. After the material mixer stops working, the detachable support frame 16 is pushed to the area below the rotating body 4. Four freely liftable screws 17 are provided on the detachable support frame 16. The screws pass through the first nuts 18 welded to the detachable support frame 16, and the free lifting of the screws is achieved by rotating clockwise and counterclockwise. At the same time, four second nuts 19 matching the screws are welded to the lower abdomen of the hopper 7 in the rotating body 4. After placing the four corners of the detachable support frame 16 below the rotating body 4, according to the height of the hopper 7 in the rotating body 4, the screws 17 are rotated through the second nuts welded on the hopper 7, and at the same time, the first nuts 18 and the second nuts 19 welded on the detachable support frame 16 and the hopper 7 are tightened, thus fixing the hopper 7 in the rotating body 4. At this time, personnel can enter this space for operations such as discharging and packaging, because the hopper 7 has been locked at a certain height, and there is no need to worry about mechanical injuries caused by the sudden fall of the hopper 7 due to hydraulic system failures.

[0035] Embodiment 2

[0036] A safety device for a material mixer includes a control box 1, a first frame 2, a second frame 3, a rotating body 4 disposed between the first frame 2 and the second frame 3, and a rotating speed reducer 5 on the upper part of the first frame 2.

[0037] Photoelectric detection components 6 are installed on the sides of the first frame 2 and the second frame 3 adjacent to the rotating body 4. The photoelectric detection components 6 are composed of a transmitter 9 on the side of the first frame 2 and a receiver 10 on the side of the second frame 3; a detachable support frame 16 is provided at the lower part of the rotating body 4.

[0038] Among them, in a specific embodiment, the transmitter 9 is composed of a number of transmitting tubes 14, and the receiver 10 is composed of a number of receiving tubes 15. The transmitting tubes 14 and the receiving tubes 15 are preferably arranged at equal intervals. In a preferred implementation, the control box 1 is electrically connected to the optoelectronic detection component 6 of the safety light curtain. In a preferred implementation, the detachable support frame 16 is provided with four liftable screw rods 17. The upper part of the screw rod 17 is connected to the hopper 7 through a second nut 19, and the lower part of the screw rod 17 is connected to the detachable support frame 16 through a first nut 18. In another preferred implementation, the rotating body 4 includes a hopper 7 and a lifting frame 8 located outside the hopper 7.

[0039] In another preferred embodiment, a special area 22 for placing the support frame is provided on one side of the material mixer. A proximity switch 21 is vertically arranged above this area. Preferably, the proximity switch 21 is electrically connected to the control box 1. Preferably, a guardrail 20 is arranged around the special area 22 for placing the support frame, as Figure 2 shown, Figure 2 is a schematic diagram of the special area for placing the support frame.

[0040] When the material mixer needs to be started, loosen the first nut 18 on the detachable support frame 16 and the hopper 7, and gently push the detachable support frame 16 to the special area 22 for placing the support frame beside the material mixer without affecting its operation. There are guardrails 20 on both sides of this area, and a proximity switch 21 is vertically arranged downward in this area. When the detachable support frame 16 is placed in place, the proximity switch 21 senses and emits a signal, and only then can the material mixer be started. The purpose of setting this proximity switch 21 is to require the operator to place the detachable support frame 16 completely in place, keep the on-site passage clean and unobstructed, and at the same time let the workers develop good operating habits. When placing the detachable support frame 16, the personnel have left the area below the material mixer, ensuring absolute safety.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A material mixer safety device, characterized in that: It comprises a control box (1), a first frame (2), a second frame (3), a rotating body (4) arranged between the first frame (2) and the second frame (3), and a rotating reducer (5) on the upper part of the first frame (2); A photoelectric detection component (6) is installed on the side of the first frame (2) and the second frame (3) adjacent to the rotating body (4), and the photoelectric detection component (6) is composed of a transmitter (9) located on the side of the first frame (2) and a receiver (10) located on the side of the second frame (3); A detachable support frame (16) is provided at the lower part of the rotating body (4).

2. The material mixer safety device according to claim 1, characterized in that: The rotating body (4) comprises a hopper (7) and a lifting frame (8) located outside the hopper (7).

3. The material mixer safety device according to claim 2, characterized in that: The detachable support frame (16) is provided with four liftable screw rods (17), the upper part of the screw rods (17) is connected to the hopper (7) via a second nut (19), and the lower part of the screw rods (17) is connected to the detachable support frame (16) via a first nut (18).

4. The material mixer safety device according to claim 1, characterized in that: A dedicated area (22) for placing a support frame is arranged on one side of the material mixer, and a proximity switch (21) is vertically arranged above the area.

5. The material mixer safety device according to claim 4, characterized in that: The proximity switch (21) is electrically connected to the control box (1).

6. The material mixer safety device according to claim 4, characterized in that: A guardrail (20) is arranged around the dedicated area (22) for placing the support frame.

7. The material mixer safety device according to claim 1, characterized in that: The transmitter (9) is composed of a plurality of transmitting tubes (14), and the receiver (10) is composed of a plurality of receiving tubes (15).

8. The material mixer safety device according to claim 7, characterized in that: The plurality of transmitting tubes (14) and receiving tubes (15) are arranged at equal intervals.

9. The material mixer safety device according to claim 1, characterized in that: The control box (1) is electrically connected to the photoelectric detection component (6).

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