An automatic detection and alarm device for deviation of a silk thread belt conveyor

Abstract

The utility model provides an automatic detection and alarm device for deviation of a silk thread belt conveyor, which includes a bottom plate, an alarm, a left photoelectric switch, a right photoelectric switch, a left opening and closing screw block, a right opening and closing screw block, and an adjusting screw. A guide rail groove is provided on the top surface of the bottom plate, and two opening and closing screw blocks are respectively movably engaged at the left and right ends of the guide rail groove; the adjusting screw runs through the bottom plate and the guide rail groove, and the left and right sections of the adjusting screw have opposite screw rotation directions, and the lower parts of the two opening and closing screw blocks are respectively provided with screw holes for matching with the left and right sections of the adjusting screw; an inverted L-shaped plate is vertically provided on the top surfaces of the two opening and closing screw blocks, and the detection probes of the two photoelectric switches are respectively arranged on the horizontal plates of the two inverted L-shaped plates, and the reflection plates of the two photoelectric switches are respectively arranged on the lower parts of the vertical plates of the two inverted L-shaped plates and are respectively located directly below the above-mentioned two detection probes; the left photoelectric switch and the right photoelectric switch are respectively electrically connected to the alarm. The device of the utility model has good versatility.

Description

Technical Field

[0001] The utility model belongs to the technical field of tobacco thread belt conveyors, and in particular relates to an automatic deviation detection and alarm device for a tobacco thread belt conveyor. Background Art

[0002] The tobacco production line belt conveyor is a device for conveying tobacco in the tobacco production process. When the tobacco production line belt conveyor is in operation, the conveyor belt will become weak and elongated due to long-term operation, which will cause the conveyor belt to deviate, resulting in the inability to accurately convey the tobacco. At present, the deviation of the conveyor belt can only be checked regularly by manual labor, which wastes manpower and cannot monitor the deviation of the conveyor belt at all times.

[0003] The utility model patent with publication number CN204587982U proposes a conveyor belt deviation warning device, which includes multiple groups of support rods spaced apart on both sides of the conveyor belt frame, each of which is composed of a vertical rod and a cross rod at the top, and chains are respectively arranged on the cross rods located above the two sides of the conveyor belt, and a tilt switch is arranged at the bottom of the chain, and an alarm device and a time relay are arranged on the support rod. The tilt switch can light up the alarm device while sending a deviation signal, directly prompting the on-duty personnel which section of the conveyor belt is deviating and to which side it is deviating. However, the conveyor belt deviation warning device cannot automatically detect and alarm for conveyor belts of different widths, and its versatility is poor. Therefore, how to design an automatic deviation detection and alarm device so that it has good versatility and can automatically detect and alarm for conveyor belts of different widths has become a technical problem that technicians in this field urgently need to solve. Utility Model Content

[0004] The utility model aims to provide a device for automatically detecting and alarming deviation of a silk thread belt conveyor, so as to solve the above-mentioned technical problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for automatically detecting and alarming deviation of a silk thread belt conveyor, comprising a base plate, an alarm, a left photoelectric switch, a right photoelectric switch, a left opening and closing screw block, a right opening and closing screw block, and an adjusting screw, wherein a guide rail groove having the same extension direction as the base plate is provided on the top surface, the left end of the guide rail groove is movably engaged with the left opening and closing screw block, and the right end of the guide rail groove is movably engaged with the right opening and closing screw block; the adjusting screw penetrates the base plate and the guide rail groove along the length direction of the base plate, the adjusting screw is rotatably matched with a through hole on the base plate for passing the adjusting screw, the left and right sections of the adjusting screw have opposite thread rotation directions, and the lower parts of the left opening and closing screw block and the right opening and closing screw block are respectively provided with through holes for engaging with the left and right sections of the adjusting screw. a screw hole for matching the threaded section; a first inverted L-shaped plate is vertically arranged on the top surface of the left opening and closing screw block, the detection probe of the left photoelectric switch is arranged on the horizontal plate of the first inverted L-shaped plate, and the left reflection plate of the left photoelectric switch is arranged at the lower part of the vertical plate of the first inverted L-shaped plate and is located directly below the detection probe of the left photoelectric switch; a second inverted L-shaped plate is vertically arranged on the top surface of the right opening and closing screw block, the detection probe of the right photoelectric switch is arranged on the horizontal plate of the second inverted L-shaped plate, and the right reflection plate of the right photoelectric switch is arranged at the lower part of the vertical plate of the second inverted L-shaped plate and is located directly below the detection probe of the right photoelectric switch; the left photoelectric switch and the right photoelectric switch are electrically connected to the alarm respectively.

[0007] Preferably, a first fixing ring is provided on the left side of the left reflective plate, the first fixing ring is loosely mounted outside the lower portion of the vertical plate of the first inverted L-shaped plate, and a first locking screw threadedly connected to the first fixing ring is provided on the first fixing ring; a second fixing ring is provided on the right side of the right reflective plate, the second fixing ring is loosely mounted outside the lower portion of the vertical plate of the second inverted L-shaped plate, and a second locking screw threadedly connected to the second fixing ring is provided on the second fixing ring.

[0008] Preferably, the right opening and closing screw block comprises an upper slider and a lower slider, and a semicircular screw hole is provided at the middle position of the bottom surface of the upper slider and the top surface of the lower slider, and the two semicircular screw holes are arranged opposite to each other and together form a circular screw hole; an elastic member is arranged between the bottom surface of the upper slider and the top surface of the lower slider; four guide rods are arranged on the top surface of the lower slider, and the four guide rods are arranged opposite to each other on the front side and the rear side of the top surface of the lower slider; the upper slider is provided with guide holes that slide and cooperate with each guide rod in a one-to-one manner; the upper ends of the two guide rods on the left side are connected by a first cross bar, and the upper ends of the two guide rods on the right side are connected by a second cross bar; a first opening opposite to the first cross bar is provided on the left side of the upper slider, and a second opening opposite to the second cross bar is provided on the right side of the upper slider, and eccentric wheels are provided in the first opening and the second opening, and the centers of the two eccentric wheels are connected by a connecting shaft that passes through the upper slider; the left opening and closing screw block has the same structure as the right opening and closing screw block.

[0009] Preferably, a pull rod is provided at the right end of the connecting shaft, and the middle position of the pull rod is vertically connected to the connecting shaft.

[0010] Preferably, the elastic member is a spring.

[0011] Preferably, damping rubber blocks for tightly fitting with the inner wall of the guide rail groove are arranged on the front and rear side walls of the left opening and closing screw block and the front and rear side walls of the right opening and closing screw block.

[0012] Preferably, a mounting hole communicating with the guide rail groove is provided on the bottom surface of the bottom plate.

[0013] The beneficial effects of the utility model are:

[0014] The utility model discloses an automatic detection and alarm device for deviation of a silk thread belt conveyor, which, when in use, only needs to rotate the adjusting screw to utilize the thread cooperation between the left section of the adjusting screw and the screw hole of the left opening and closing screw block, as well as the thread cooperation between the right section of the adjusting screw and the screw hole of the right opening and closing screw block, to drive the left opening and closing screw block and the right opening and closing screw block to move closer to or farther from each other, thereby driving the first inverted L-shaped plate and the second inverted L-shaped plate to move closer to or farther from each other, thereby driving the left photoelectric switch detection probe and the right photoelectric switch detection probe to move closer to or farther from each other, and then conveniently adjusting the distance between the left photoelectric switch detection probe and the right photoelectric switch detection probe, so that the device can automatically detect and alarm for deviation of conveyor belts of different widths, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the embodiments, and further describe the specific embodiments of the present utility model in detail in conjunction with the drawings, wherein

[0016] Figure 1 A schematic diagram of an automatic detection and alarm device for deviation of a silk thread belt conveyor provided in an embodiment of the utility model;

[0017] Figure 2 A schematic diagram of a right opening and closing screw block provided in an embodiment of the utility model;

[0018] Figure 3 Another schematic diagram of the right opening and closing screw block provided in an embodiment of the utility model.

[0019] Markings in the accompanying drawings:

[0020] 1. Bottom plate; 2. Guide rail groove; 3. Left opening and closing screw block; 4. Right opening and closing screw block; 5. Adjusting screw;

[0021] 6. First inverted L-shaped plate; 7. Detection probe of left photoelectric switch; 8. Left reflector;

[0022] 9. Second inverted L-shaped plate; 10. Detection probe of right photoelectric switch; 11. Right reflective plate;

[0023] 12. Mounting hole; 13. Lower slider; 14. Upper slider; 15. Guide rod; 16. Guide hole;

[0024] 17. second crossbar; 18. connecting shaft; 19. first fixing ring; 20. second fixing ring;

[0025] 21. elastic member; 22. damping rubber block; 23. second locking screw; 24. eccentric wheel;

[0026] 25. Actuating rod; 26. Conveyor belt; 27. First cross bar; 28. Second opening. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the utility model, the solution will be further described in detail below in conjunction with specific embodiments.

[0028] like Figures 1 to 3As shown, the embodiment of the utility model provides an automatic detection and alarm device for deviation of a silk thread belt conveyor, which includes a base plate 1, an alarm, a left photoelectric switch, a right photoelectric switch, a left opening and closing screw block 3, a right opening and closing screw block 4, and an adjusting screw 5. The top surface of the base plate 1 is provided with a guide rail groove 2 in the same extension direction as the base plate 1, the left end of the guide rail groove 2 is movably engaged with the left opening and closing screw block 3, and the right end of the guide rail groove 2 is movably engaged with the right opening and closing screw block 4; the adjusting screw 5 passes through the base plate 1 and the guide rail groove along the length direction of the base plate, the adjusting screw 5 is rotatably matched with the through hole on the base plate for passing the adjusting screw 5, the left section and the right section of the adjusting screw 5 have opposite thread rotation directions, and the lower parts of the left opening and closing screw block 3 and the right opening and closing screw block 4 are respectively provided with through holes for adjusting the adjusting screw 5. The left and right sections of the adjusting screw 5 are threadedly matched with screw holes; a first inverted L-shaped plate 6 is vertically arranged on the top surface of the left opening and closing screw block, the detection probe 7 of the left photoelectric switch is arranged on the horizontal plate of the first inverted L-shaped plate, and the left reflection plate 8 of the left photoelectric switch is arranged at the lower part of the vertical plate of the first inverted L-shaped plate and is located directly below the detection probe of the left photoelectric switch; a second inverted L-shaped plate 9 is vertically arranged on the top surface of the right opening and closing screw block, the detection probe 10 of the right photoelectric switch is arranged on the horizontal plate of the second inverted L-shaped plate, and the right reflection plate 11 of the right photoelectric switch is arranged at the lower part of the vertical plate of the second inverted L-shaped plate and is located directly below the detection probe of the right photoelectric switch; the left photoelectric switch and the right photoelectric switch are electrically connected to the alarm respectively.

[0029] The automatic detection and alarm device for deviation of a silk thread belt conveyor provided by the embodiment of the utility model only needs to rotate the adjusting screw 5 when in use. The left section of the adjusting screw 5 and the screw hole of the left opening and closing screw block 3 as well as the right section of the adjusting screw 5 and the screw hole of the right opening and closing screw block 4 can be utilized to drive the left opening and closing screw block 3 and the right opening and closing screw block 4 to move closer to or farther from each other, thereby driving the first inverted L-shaped plate 6 and the second inverted L-shaped plate 9 to move closer to or farther from each other, thereby driving the left photoelectric switch detection probe 7 and the right photoelectric switch detection probe 10 to move closer to or farther from each other, and then conveniently adjusting the distance between the left photoelectric switch detection probe and the right photoelectric switch detection probe, so that the device can automatically detect and alarm for deviation of conveyor belts 26 of different widths, and has good versatility.

[0030] Furthermore, a first fixing ring 19 is provided on the left side of the left reflective plate 8, and the first fixing ring is loosely mounted outside the lower portion of the vertical plate of the first inverted L-shaped plate, and a first locking screw threadedly connected to the first fixing ring is provided on the first fixing ring; a second fixing ring 20 is provided on the right side of the right reflective plate 11, and the second fixing ring is loosely mounted outside the lower portion of the vertical plate of the second inverted L-shaped plate, and a second locking screw 23 threadedly connected to the second fixing ring is provided on the second fixing ring. By adopting this solution, the first fixing ring is slid up and down along the vertical plate of the first inverted L-shaped plate, so that the position of the left reflective plate in the vertical direction can be easily adjusted. Then, the first locking screw is tightened and the first locking screw is pressed against the vertical plate of the first inverted L-shaped plate, so that the first fixing ring can be locked on the vertical plate of the first inverted L-shaped plate. Similarly, the second fixing ring can be used to easily adjust the position of the right reflective plate in the vertical direction, and the second fixing ring can be locked on the vertical plate of the second inverted L-shaped plate by using the second locking screw, so that the device can automatically detect and alarm for deviation of conveyor belts of different thicknesses or at different heights, and the versatility is further improved.

[0031] Specifically, a bearing is provided in the through hole on the bottom plate for the adjusting screw to pass through, so that the rotational connection between the adjusting screw 5 and the bottom plate is conveniently achieved by using the bearing.

[0032] Preferably, both the left photoelectric switch and the right photoelectric switch are CPK-RMR6MR3 mirror reflection type photoelectric switches, which are commonly used devices in the prior art and will not be described in detail here. When the left and right sides of the conveyor belt are not offset, the light emitted by the detection probe of the left photoelectric switch is reflected by the left reflector and then returns to the detection part of the detection probe of the left photoelectric switch, and the light emitted by the detection probe of the right photoelectric switch is reflected by the right reflector and then returns to the detection part of the detection probe of the right photoelectric switch; when the conveyor belt is offset, the light emitted by the detection probe of the left photoelectric switch or the detection probe of the right photoelectric switch is blocked by the conveyor belt offset to the left or right, so that the detection probe of the left photoelectric switch or the detection part of the detection probe of the right photoelectric switch cannot receive the light signal, and an alarm will be issued, or a signal will be sent to the alarm electrically connected thereto, prompting the alarm to issue an alarm.

[0033] Further, the right opening and closing screw block includes an upper slider 14 and a lower slider 13, and a semicircular screw hole is provided at the middle position on the bottom surface of the upper slider and the top surface of the lower slider, and the two semicircular screw holes are arranged opposite to each other and together form a circular screw hole; an elastic member 21 is provided between the bottom surface of the upper slider and the top surface of the lower slider; four guide rods 15 are provided on the top surface of the lower slider, and the four guide rods are arranged opposite to each other on the front and rear sides of the top surface of the lower slider; the upper slider is provided with guide rods that slide in a one-to-one correspondence with each guide rod. Toward hole 16; the upper ends of the two guide rods on the left side are connected by a first cross bar 27, and the upper ends of the two guide rods on the right side are connected by a second cross bar 17; a first opening opposite to the first cross bar is provided on the left side of the upper slider, and a second opening opposite to the second cross bar is provided on the right side of the upper slider, eccentric wheels 24 are provided in the first opening and the second opening, and the centers of the two eccentric wheels are connected by a connecting shaft 18 passing through the upper slider; the left opening and closing screw block 3 has the same structure as the right opening and closing screw block 4.

[0034] With this scheme, it is only necessary to rotate the connecting shaft 18 to drive the two eccentric wheels 24 to rotate, and use the two eccentric wheels to respectively press against the bottoms of the two openings to press the upper slider 14 downward. At this time, the upper slider will move downward along the guide rod 15 until the semicircular screw holes on the upper slider and the lower slider are both fitted on the adjusting screw, that is, the adjusting screw 5 is clamped. At this time, the left opening and closing screw block 3 and the right opening and closing screw block 4 are in a closed state, and then rotating the adjusting screw can drive the left opening and closing screw block and the right opening and closing screw block to move left and right along the guide rail groove, so as to adjust the position of the left opening and closing screw block and the right opening and closing screw block in the horizontal direction; and when the two eccentric wheels are driven back to the initial position by rotating the connecting shaft, the upper slider and the lower slider are separated under the action of the restoring force of the elastic member, and the left opening and closing screw block and the right opening and closing screw block are in an open state, and the two semicircular screw holes are no longer fitted with the adjusting screw, so that rotating the adjusting screw again will not drive the left opening and closing screw block and the right opening and closing screw block to move. When it is necessary to adjust the position of the left opening and closing screw block 3 in the horizontal direction alone, it is only necessary to put the left opening and closing screw block 3 in a closed state, so that the position of the left photoelectric switch detection probe and the left launch plate can be easily adjusted alone; when it is necessary to adjust the position of the right opening and closing screw block 4 in the horizontal direction alone, it is only necessary to put the right opening and closing screw block 4 in a closed state, so that the position of the right photoelectric switch detection probe and the right launch plate can be easily adjusted alone, so that the device can automatically detect and alarm the deviation of the conveyor belt with different offset angles or offset amounts on the left and right sides of the silk thread belt conveyor, making the device more versatile. It can be understood that when it is necessary to adjust the positions of the left opening and closing screw block and the right opening and closing screw block in the horizontal direction at the same time, the left opening and closing screw block 3 and the right opening and closing screw block 4 can be placed in a closed state. At this time, rotating the adjusting screw can drive the left opening and closing screw block and the right opening and closing screw block to move closer or farther from each other; the two eccentric wheels are respectively located between the two cross bars and the bottom of the two openings.

[0035] Specifically, a pull rod 25 is disposed at the right end of the connecting shaft 18 , and the middle position of the pull rod 25 is vertically connected to the connecting shaft 18 , so that the connecting shaft can be easily rotated by the pull rod 25 .

[0036] Specifically, the elastic member 21 is a spring, and may preferably be a bow-shaped spring.

[0037] In one embodiment, the two eccentric wheels mentioned above can be replaced by waist-shaped blocks, and the connecting shaft connects the middle parts of the two waist-shaped blocks. When the waist-shaped blocks are placed horizontally, the left opening and closing screw block and the right opening and closing screw block are in an open state. When the connecting shaft is rotated to make the waist-shaped blocks vertical, the left opening and closing screw block and the right opening and closing screw block can be placed in a closed state, thereby conveniently switching the opening and closing states of the left opening and closing screw block and the right opening and closing screw block.

[0038] Preferably, damping rubber blocks 22 for tightly fitting with the inner wall of the guide rail groove 2 are provided on the front and rear side walls of the left opening and closing screw block 3 and the front and rear side walls of the right opening and closing screw block 4, that is, there is a certain interference fit between the damping rubber block and the inner wall of the guide rail groove, which increases the friction between the two, thereby not affecting the position adjustment of the left opening and closing screw block and the right opening and closing screw block in the closed state, and also enabling the position of the left opening and closing screw block and the right opening and closing screw block in the open state on the guide rail groove to be maintained, so as to automatically detect and alarm the deviation of the conveyor belt on the conveyor through the left photoelectric switch detection probe and the right photoelectric switch detection probe.

[0039] Specifically, a mounting hole 12 communicating with the guide rail groove is provided on the bottom surface of the bottom plate 1, so that the device can be conveniently fixed on the silk thread belt conveyor through the mounting hole 12. Preferably, the bottom plate is a rectangular structure; the number of mounting holes 12 is multiple, and each mounting hole 12 is evenly spaced and distributed in the length direction of the bottom plate.

[0040] The above are only preferred implementation modes of the present invention. It should be pointed out that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Moreover, after reading the contents of the present invention, relevant technical personnel in the field can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An automatic detection and alarm device for deviation of a silk thread belt conveyor, characterized in that: It includes a base plate, an alarm, a left photoelectric switch, a right photoelectric switch, a left opening and closing screw block, a right opening and closing screw block, and an adjusting screw. The top surface of the base plate is provided with a guide rail groove in the same extension direction as the base plate. The left end of the guide rail groove is movably engaged with the left opening and closing screw block, and the right end of the guide rail groove is movably engaged with the right opening and closing screw block. The adjusting screw passes through the base plate and the guide rail groove along the length direction of the base plate. The adjusting screw is rotatably matched with a through hole on the base plate for passing the adjusting screw. The left and right sections of the adjusting screw have opposite thread rotation directions. The lower parts of the left and right opening and closing screw blocks are respectively provided with screw holes for threading with the left and right sections of the adjusting screw. A first inverted L-shaped plate is vertically arranged on the top surface of the left opening and closing screw block, the detection probe of the left photoelectric switch is arranged on the horizontal plate of the first inverted L-shaped plate, and the left reflection plate of the left photoelectric switch is arranged at the lower part of the vertical plate of the first inverted L-shaped plate and is located directly below the detection probe of the left photoelectric switch; a second inverted L-shaped plate is vertically arranged on the top surface of the right opening and closing screw block, the detection probe of the right photoelectric switch is arranged on the horizontal plate of the second inverted L-shaped plate, and the right reflection plate of the right photoelectric switch is arranged at the lower part of the vertical plate of the second inverted L-shaped plate and is located directly below the detection probe of the right photoelectric switch; the left photoelectric switch and the right photoelectric switch are electrically connected to the alarm respectively.

2. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to claim 1 is characterized in that: A first fixing ring is arranged on the left side of the left reflective plate, the first fixing ring is loosely mounted outside the lower portion of the vertical plate of the first inverted L-shaped plate, and a first locking screw threadedly connected to the first fixing ring is arranged on the first fixing ring; a second fixing ring is arranged on the right side of the right reflective plate, the second fixing ring is loosely mounted outside the lower portion of the vertical plate of the second inverted L-shaped plate, and a second locking screw threadedly connected to the second fixing ring is arranged on the second fixing ring.

3. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to claim 1 is characterized in that: The right opening and closing screw block comprises an upper slider and a lower slider, wherein a semicircular screw hole is provided at the middle position of the bottom surface of the upper slider and the top surface of the lower slider, and the two semicircular screw holes are arranged oppositely and together form a circular screw hole; an elastic member is provided between the bottom surface of the upper slider and the top surface of the lower slider; four guide rods are provided on the top surface of the lower slider, and the four guide rods are arranged oppositely on the front and rear sides of the top surface of the lower slider in pairs; the upper slider is provided with guide holes that slide and cooperate with each of the guide rods in a one-to-one manner; the upper ends of the two guide rods on the left side are connected by a first cross bar, and the upper ends of the two guide rods on the right side are connected by a second cross bar; a first opening opposite to the first cross bar is provided on the left side of the upper slider, and a second opening opposite to the second cross bar is provided on the right side of the upper slider, and eccentric wheels are provided in the first opening and the second opening, and the centers of the two eccentric wheels are connected by a connecting shaft that passes through the upper slider; the structure of the left opening and closing screw block is the same as that of the right opening and closing screw block.

4. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to claim 3 is characterized in that: The right end of the connecting shaft is provided with a pull rod, and the middle position of the pull rod is vertically connected to the connecting shaft.

5. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to claim 3 is characterized in that: The elastic member is a spring.

6. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to claim 1 is characterized in that: Damping rubber blocks for tightly fitting with the inner wall of the guide rail groove are arranged on the front and rear side walls of the left opening and closing screw block and the front and rear side walls of the right opening and closing screw block.

7. The automatic detection and alarm device for deviation of a silk thread belt conveyor according to any one of claims 1 to 6, characterized in that: A mounting hole communicating with the guide rail groove is arranged on the bottom surface of the bottom plate.

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