Quality detection device for fire alarm

Abstract

The invention relates to the technical field of detection devices, and discloses a quality detection device for a fire alarm, the quality detection device comprises a base and a plurality of supporting legs fixedly mounted on the lower surface of the base at equal intervals, a rotating shaft is rotatably mounted on the upper surface of the base, and a rotating disc is fixedly mounted at the top end of the rotating shaft. When the fire alarm body rotates to a position where a wiring counter bore is located right below the bottom end of a square sliding cylinder, a rubber roller rolls into the wiring counter bore, at the moment, the square sliding cylinder moves downwards by a certain distance under the acting force of a second spring, the square sliding cylinder drives a pressing column to move downwards by a certain distance, and the pressing column presses a rotating rod to drive the rotating rod to move downwards by a certain distance; at the moment, the rotating rod drives the surface of the rubber friction wheel to leave the surface of the fire alarm body, the fire alarm body stops rotating, the positions of the conducting rods and the wiring counter bores can be automatically aligned through the device, manual alignment one by one is not needed, and when the fire alarm bodies are detected in batches, the detection efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a quality detection device for a fire alarm. Background Art

[0002] In the field of fire protection, fire alarms can give an alarm immediately when a fire occurs. They are important equipment for protecting people's lives and property. Therefore, fire alarms must be tested for product quality before leaving the factory to ensure that they can be used normally. In the prior art, the detection of fire alarms is mostly done by manually connecting the power supply to the fire alarm and installing it, and then testing the quality of the finished fire alarm. The detection efficiency is low, resulting in low production efficiency of fire alarms, and too much manual participation may lead to missed detection or wrong detection.

[0003] An existing quality inspection device for fire alarms (Announcement No.: CN213210320U) has at least the following drawbacks: When the above patent is in use, the fire alarm that needs to be quality inspected is placed in the product placement cavity, and the wiring terminal of the fire alarm is facing the detection probe of the workbench. Then the first cylinder contracts, driving the transverse plate and the product placement cavity to move, and the fire alarm in the product placement cavity can come into contact with the detection probe. Then the detection probe is powered on to detect the fire alarm. Since the wiring terminal of the fire alarm is manually aligned with the detection probe of the workbench each time, when the fire alarm is batch tested, the manual alignment method is too slow, which greatly reduces the efficiency of the test. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a quality detection device for a fire alarm.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A quality inspection device for a fire alarm comprises a base and a plurality of legs fixedly installed at equal intervals on the lower surface of the base, a rotating shaft is rotatably installed on the upper surface of the base, a rotating disk is fixedly installed on the top end of the rotating shaft, a plurality of placement holes are equidistantly provided in the circumferential direction of the upper surface of the rotating disk, a fire alarm body is arranged inside each of the plurality of placement holes, the outer shape of the fire alarm body is conical, the inner wall of the placement hole is matched with the outer shape of the fire alarm body, a plurality of installation grooves are equidistantly provided on the inner wall of the placement hole, a rotating rod is rotatably installed between the top wall and the bottom wall of the installation groove, and the rotating rod A rubber friction wheel is fixedly installed on the outer surface, and the outer surface of the rubber friction wheel is against the outer surface of the fire alarm body. A plurality of square sliding columns are equidistantly inserted in the circumferential direction of the upper surface of the turntable for sliding, and a fixing plate is fixedly installed on the top of the plurality of square sliding columns. Two square sliding cylinders are symmetrically inserted in the upper surface of the fixing plate for sliding, and the bottom ends of the two square sliding cylinders pass through the lower surface of the fixing plate. The bottom ends of the square sliding cylinders are arranged in a triangular shape, and two rubber rollers are symmetrically installed between the inner walls at opposite ends near the bottom end of the square sliding cylinder for rotating, and the two rubber rollers are against the upper surface of the fire alarm body.

[0006] As a further solution of the present invention, the top and bottom ends of the rotating rod respectively penetrate the upper and lower surfaces of the rotating disk and are slidably installed therewith; a first spring is sleeved on the circumferential outer surface of the rotating rod near the bottom end; the first spring is arranged between the rubber friction wheel and the bottom wall of the mounting groove; the top end of the first spring is slidably installed on the lower surface of the rubber friction wheel; the bottom end of the first spring is slidably installed on the bottom wall of the mounting groove; an annular internal gear is fixedly installed on the upper surface of the base; a driven gear is fixedly installed on the bottom end of the rotating rod near the annular internal gear; the driven gear is meshed with the annular internal gear; the width of the annular internal gear is greater than the height of the mounting groove; by setting the width of the annular internal gear greater than the height of the mounting groove, the driven gear can slide up and down along the inner wall of the annular internal gear.

[0007] As a further solution of the present invention, two wiring countersunk holes are symmetrically provided on the upper surface of the fire alarm body, the bottom end of the square slide is matched with the wiring countersunk hole, the bottom wall of the wiring countersunk hole is provided with a conductive sheet, a retaining ring is fixedly installed on the outer surface of the square slide near the bottom end, a second spring is sleeved on the outer surface of the square slide, the top of the second spring is fixedly connected to the lower surface of the fixed plate, the bottom end of the second spring is fixedly connected to the upper surface of the retaining ring, a pressure column is fixedly installed on the outer surface of the retaining ring near the circular inner gear, and the bottom end of the pressure column is against the top of the rotating rod.

[0008] As a further solution of the present invention, a conductive rod is slidably installed on the inner wall of the square slide, and the bottom end of the conductive rod passes through the bottom of the square slide and abuts against the conductive sheet on the bottom wall of the wiring countersunk hole, and two L-shaped top rods are symmetrically and rotatably installed on the outer surfaces of the two opposite sides near the bottom end of the square slide, and a weight block is provided at the bottom end of the L-shaped top rod, and two supports are symmetrically and fixedly installed on the outer surfaces of the two opposite sides near the bottom end of the conductive rod, and second guide columns are fixedly installed on the inner walls of the two supports, and a second guide groove is penetrated through the outer surface of the L-shaped top rod near the top, and the second guide column is slidably installed on the inner wall of the second guide groove, and two limit grooves are symmetrically provided on the outer surface of the two opposite sides near the bottom of the square slide, and the two supports are slidably installed on the inner walls of the two limit grooves respectively.

[0009] As a further solution of the present invention, a plurality of groups of transmission rods are equidistantly rotatably installed on the upper surface of the turntable in groups of two, and a pressure plate is fixedly installed on the top end of each group of two transmission rods. A rubber pressure wheel is rotatably installed on the lower surface of the other end of the pressure plate. The rubber pressure wheel is arranged above the fire alarm body and abuts against its upper surface. A transition chamfer is provided on the circumferential outer surface of the rubber pressure wheel, which facilitates the rubber pressure wheel to slide into the upper surface of the fire alarm body. The bottom end of the transmission rod passes through the lower surface of the turntable and is fixedly installed with a rotating plate.

[0010] As a further solution of the present invention, a plurality of dovetail slide rails are fixedly installed at equal intervals in the circumferential direction of the lower surface of the turntable, and a slider is slidably installed on the outer surfaces of the plurality of dovetail slide rails, and two connecting rods are symmetrically and rotatably installed on the outer surface of the slider, and the other ends of the two connecting rods are respectively rotatably installed with the other ends of the two rotating plates, and the bottom end of the square slide column passes through the lower surface of the turntable, and a first guide groove is penetrated through the outer surface of the square slide column near the bottom end, and a first guide column is fixedly installed between the inner wall of the slider near one end of the square slide column, and the first guide column is slidably installed with the inner wall of the first guide groove.

[0011] As a further solution of the present invention, a fixing cylinder is fixedly installed on the upper surface of the base, the rotating shaft passes through the inner wall of the fixing cylinder, a driving groove is opened on the circumferential outer surface of the fixing cylinder near the top, a driving column is fixedly installed on the bottom end of the square sliding column, the driving column is slidably installed with the inner wall of the driving groove, a servo motor is fixedly installed on the lower surface of the base, and the output end of the servo motor passes through the upper surface of the base and is fixedly installed with the rotation center of the rotating shaft.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. When the fire alarm body rotates to the point where the wiring countersunk hole is directly below the bottom end of the square slide, the rubber roller will roll into the wiring countersunk hole. At this time, the square slide will move down a distance under the action of the second spring, and the square slide will drive the pressure column to move down a distance, so that the pressure column presses the rotating rod to drive it to move down a distance. At this time, the rotating rod drives the surface of the rubber friction wheel to leave the surface of the fire alarm body, and the fire alarm body stops rotating. This device can automatically align the position of the conductive rod and the wiring countersunk hole without manual alignment one by one. When testing the fire alarm body in batches, the detection efficiency is greatly improved; 2. The first guide column and the first guide groove drive the slider to slide away from the fire alarm body, the slider drives the transmission rod to rotate through the connecting rod and the rotating plate, the transmission rod drives the two pressure plates to move closer to each other, the pressure plate drives the rubber pressure wheel to move to the top of the fire alarm body, the rubber pressure wheel presses the upper surface of the fire alarm body, and presses the fire alarm body against the inside of the placement hole. This device makes it easy to quickly limit the position of the fire alarm body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a quality detection device for a fire alarm proposed by the present invention; Figure 2 A schematic diagram of the structure of a quality detection device for a fire alarm proposed by the present invention from a bottom up view; Figure 3 A schematic diagram of a rotating shaft of a quality detection device for a fire alarm proposed by the present invention; Figure 4 A schematic diagram of a turntable of a quality detection device for a fire alarm proposed by the present invention; Figure 5 A partial cross-sectional schematic diagram of a turntable of a quality detection device for a fire alarm proposed by the present invention; Figure 6 A schematic diagram of a driving slot of a quality detection device for a fire alarm proposed by the present invention; Figure 7 A schematic diagram of a rotating rod of a quality detection device for a fire alarm proposed by the present invention; Figure 8 A schematic diagram of a square slide of a quality detection device for a fire alarm proposed by the present invention; Fig. 9 A schematic diagram of a conductive rod of a quality detection device for a fire alarm proposed by the present invention; Fig.10 A schematic diagram of an L-shaped top rod of a quality detection device for a fire alarm proposed by the present invention; Fig.11A schematic diagram of a fixing cylinder of a quality detection device for a fire alarm proposed by the present invention; Fig.12 for Figure 5 A partial enlarged schematic diagram in the middle; Fig.13 for Figure 6 A partial enlarged schematic diagram of point B in the middle; Fig.14 This is a schematic diagram of the expansion of a drive slot of a quality detection device for a fire alarm proposed by the present invention.

[0014] In the figure: 1. base; 2. inner gear of the circular ring; 3. servo motor; 4. rotating shaft; 5. fixing cylinder; 501. driving groove; 6. fire alarm body; 601. wiring countersunk hole; 7. turntable; 701. placement hole; 702. installation groove; 8. rubber friction wheel; 9. driven gear; 10. rotating rod; 11. first spring; 12. square sliding column; 13. fixing plate; 14. pressure plate; 15. rubber pressure wheel; 16. conductive rod; 17. pressure column; 18. square sliding cylinder; 1801. limiting groove; 19. driving column; 20. sliding block; 21. first guide column; 22. first guide groove; 23. rotating plate; 24. connecting rod; 25. second spring; 26. retaining ring; 27. L-shaped top rod; 28. support; 29. ​​rubber roller; 30. second guide column; 31. second guide groove. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0016] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Reference Figure 1-Figure 14 A quality inspection device for a fire alarm comprises a base 1 and a plurality of legs equidistantly fixedly installed on the lower surface of the base 1, a rotating shaft 4 is rotatably installed on the upper surface of the base 1, a rotating disk 7 is fixedly installed on the top of the rotating shaft 4, a plurality of placement holes 701 are equidistantly provided on the circumferential direction of the upper surface of the rotating disk 7, a fire alarm body 6 is arranged inside the plurality of placement holes 701, the outer shape of the fire alarm body 6 is conical, the inner wall of the placement hole 701 is matched with the outer shape of the fire alarm body 6, a plurality of installation grooves 702 are equidistantly provided on the inner wall of the placement hole 701, a rotating rod 10 is rotatably installed between the top wall and the bottom wall of the installation groove 702, and the rotating rod 1 0 is fixedly mounted with a rubber friction wheel 8 on the outer surface, and the outer surface of the rubber friction wheel 8 abuts against the outer surface of the fire alarm body 6. A plurality of square slide columns 12 are equidistantly slidably inserted in the circumferential direction of the upper surface of the turntable 7. A fixing plate 13 is fixedly mounted on the top of the plurality of square slide columns 12. Two square slide cylinders 18 are symmetrically slidably inserted on the upper surface of the fixing plate 13. The bottom ends of the two square slide cylinders 18 both penetrate the lower surface of the fixing plate 13. The bottom ends of the square slide cylinders 18 are arranged in a triangular shape. Two rubber rollers 29 are symmetrically rotatably mounted between the inner walls at opposite ends near the bottom of the square slide cylinder 18, and the two rubber rollers 29 abut against the upper surface of the fire alarm body 6.

[0019] When the fire alarm body 6 rotates to the point where the wiring countersunk hole 601 is directly below the bottom end of the square slide 18, the rubber roller 29 will roll into the inside of the wiring countersunk hole 601. At this time, the square slide 18 will move downward a certain distance under the action of the second spring 25. The square slide 18 drives the pressure column 17 to move downward a certain distance, so that the pressure column 17 presses the rotating rod 10 to drive it to move downward a certain distance. At this time, the rotating rod 10 drives the surface of the rubber friction wheel 8 to leave the surface of the fire alarm body 6, and the fire alarm body 6 stops rotating. This device can automatically align the position of the conductive rod 16 and the wiring countersunk hole 601 without the need to manually align them one by one. When the fire alarm body 6 is tested in batches, the detection efficiency is greatly improved.

[0020] In this embodiment, the top and bottom ends of the rotating rod 10 respectively penetrate the upper and lower surfaces of the rotating disk 7 and are slidably mounted thereon. A first spring 11 is sleeved on the circumferential outer surface of the rotating rod 10 near the bottom end. The first spring 11 is arranged between the rubber friction wheel 8 and the bottom wall of the mounting groove 702. The top end of the first spring 11 is slidably mounted on the lower surface of the rubber friction wheel 8. The bottom end of the first spring 11 is slidably mounted on the bottom wall of the mounting groove 702. An annular inner gear 2 is fixedly mounted on the upper surface of the base 1. A driven gear is fixedly mounted on the bottom end of the rotating rod 10 near the annular inner gear 2. Wheel 9, the driven gear 9 is meshed with the annular inner gear 2, the width of the annular inner gear 2 is greater than the height of the mounting groove 702, a fixed cylinder 5 is fixedly mounted on the upper surface of the base 1, the rotating shaft 4 passes through the inner wall of the fixed cylinder 5, and a driving groove 501 is opened on the circumferential outer surface of the fixed cylinder 5 near the top, a driving column 19 is fixedly mounted on the bottom end of the square sliding column 12, and the driving column 19 is slidably mounted on the inner wall of the driving groove 501, a servo motor 3 is fixedly mounted on the lower surface of the base 1, and the output end of the servo motor 3 passes through the upper surface of the base 1 and is fixedly mounted on the rotation center of the rotating shaft 4.

[0021] The servo motor 3 drives the rotating shaft 4 to rotate, so that the rotating shaft 4 drives the turntable 7 to rotate in a fixed angle in a directional manner. The turntable 7 drives the fire alarm body 6 and the square slide column 12 to move. The square slide column 12 drives the square slide column 12 to move up and down intermittently through the driving column 19 and the driving groove 501. Through the rotation of the turntable 7, the driven gear 9 drives itself to rotate by engaging with the inner gear 2 of the circular ring. The driven gear 9 drives the rubber friction wheel 8 to rotate through the rotating rod 10. The rubber friction wheel 8 drives the fire alarm body 6 to rotate by abutting against the outer surface of the fire alarm body 6.

[0022] In this embodiment, two wiring countersunk holes 601 are symmetrically provided on the upper surface of the fire alarm body 6, the bottom end of the square slide 18 is matched with the wiring countersunk hole 601, and the bottom wall of the wiring countersunk hole 601 is provided with a conductive sheet, and a retaining ring 26 is fixedly installed on the outer surface of the square slide 18 near the bottom end, and a second spring 25 is sleeved on the outer surface of the square slide 18, and the top end of the second spring 25 is fixedly connected to the lower surface of the fixed plate 13, and the bottom end of the second spring 25 is fixedly connected to the upper surface of the retaining ring 26, and a pressure column 17 is fixedly installed on the outer surface of the retaining ring 26 near the annular inner gear 2, and the bottom end of the pressure column 17 is against the top of the rotating rod 10, and a conductive rod 16 is slidably installed on the inner wall of the square slide 18, and the bottom of the conductive rod 16 The end passes through the bottom of the square slide 18 and abuts against the conductive sheet on the bottom wall of the wiring countersunk hole 601. The square slide 18 has two L-shaped top rods 27 symmetrically rotatably installed on the outer surfaces on both sides of the opposite sides near the bottom end. A weight block is provided at the bottom end of the L-shaped top rod 27. The conductive rod 16 has two supports 28 symmetrically fixedly installed on the outer surfaces on both sides of the opposite sides near the bottom end. The inner walls of the two supports 28 are fixedly installed with second guide columns 30. The outer surface of the L-shaped top rod 27 near the top end is penetrated by a second guide groove 31. The second guide column 30 is slidably installed on the inner wall of the second guide groove 31. The outer surface of the square slide 18 on both sides of the opposite sides near the bottom is symmetrically provided with two limit grooves 1801, and the two supports 28 are slidably installed on the inner walls of the two limit grooves 1801 respectively.

[0023] When the square slide 18 moves downward, it will drive the L-shaped top rod 27 to move downward for a distance. When the bottom end of the L-shaped top rod 27 abuts against the upper surface of the fire alarm body 6, the L-shaped top rod 27 will rotate. The L-shaped top rod 27 drives the conductive rod 16 to move downward through the second guide groove 31 and the second guide column 30, so that the bottom end of the conductive rod 16 abuts against the conductive sheet on the bottom wall of the wiring countersunk hole 601. The conductive rod 16 is electrically connected to an external test meter through a wire. The test meter energizes the fire alarm body 6 through the conductive rod 16 and tests whether the current can be connected. This device is convenient for quality inspection of the fire alarm body 6.

[0024] In this embodiment, a plurality of groups of transmission rods are equidistantly installed on the upper surface of the turntable 7, and a pressure plate 14 is fixedly installed on the top of each of the two transmission rods in a group. A rubber pressure wheel 15 is rotatably installed on the lower surface of the other end of the pressure plate 14. The rubber pressure wheel 15 is arranged above the fire alarm body 6 and abuts against its upper surface. A transition chamfer is arranged on the circumferential outer surface of the rubber pressure wheel 15. The bottom end of the transmission rod passes through the lower surface of the turntable 7 and a rotating plate 23 is fixedly installed. A plurality of dovetail slides are fixedly installed equidistantly in the circumferential direction of the lower surface of the turntable 7. The outer surfaces of the multiple dovetail slide rails are all slidably mounted with sliders 20, the outer surfaces of the sliders 20 are symmetrically rotatably mounted with two connecting rods 24, the other ends of the two connecting rods 24 are rotatably mounted with the other ends of the two rotating plates 23 respectively, the bottom end of the square slide column 12 passes through the lower surface of the turntable 7, the outer surface of the square slide column 12 near the bottom end is penetrated with a first guide groove 22, the first guide column 21 is fixedly mounted between the inner wall of the slider 20 near one end of the square slide column 12, and the first guide column 21 is slidably mounted with the inner wall of the first guide groove 22.

[0025] When the square slide column 12 moves downward, the slider 20 is driven to slide away from the fire alarm body 6 through the first guide column 21 and the first guide groove 22, and the slider 20 drives the transmission rod to rotate through the connecting rod 24 and the rotating plate 23. The transmission rod drives the two pressure plates 14 to move closer to each other, and the pressure plate 14 drives the rubber pressure wheel 15 to move above the fire alarm body 6. The rubber pressure wheel 15 presses the upper surface of the fire alarm body 6 and presses the fire alarm body 6 against the inside of the placement hole 701. The position of the fire alarm body 6 is limited by this device, so that the outer surface of the fire alarm body 6 is pressed against the outer surface of the rubber friction wheel 8, which is convenient for the subsequent rubber friction wheel 8 to drive the fire alarm body 6 to rotate.

[0026] It should be noted that when the present invention is used, the operator manually places the fire alarm body 6 into the placement hole 701, and drives the rotating shaft 4 to rotate through the servo motor 3, so that the rotating shaft 4 drives the rotating disk 7 to rotate in a fixed angle; The turntable 7 drives the fire alarm body 6 and the square slide column 12 to move. The square slide column 12 drives the square slide column 12 to move up and down intermittently through the driving column 19 and the driving groove 501. When the square slide column 12 moves downward, it drives the slider 20 to slide away from the fire alarm body 6 through the first guide column 21 and the first guide groove 22. The slider 20 drives the transmission rod to rotate through the connecting rod 24 and the rotating plate 23. The transmission rod drives the two pressing plates 14 to move closer to each other. The pressing plate 14 drives the rubber pressure wheel 15 to move above the fire alarm body 6. The rubber pressure wheel 15 presses the upper surface of the fire alarm body 6 and presses the fire alarm body 6 against the inside of the placement hole 701. The position of the fire alarm body 6 is limited by this device, so that the outer surface of the fire alarm body 6 is pressed against the outer surface of the rubber friction wheel 8, which is convenient for the subsequent rubber friction wheel 8 to drive the fire alarm body 6 to rotate. The square slide column 12 moves downward, driving the fixed plate 13 to move downward. The fixed plate 13 drives the rubber roller 29 to abut against the upper surface of the fire alarm body 6 through the square slide cylinder 18. The driven gear 9 is driven to rotate by meshing with the inner gear 2 of the annular ring through the rotation of the turntable 7. The driven gear 9 drives the rubber friction wheel 8 to rotate through the rotating rod 10. The rubber friction wheel 8 drives the fire alarm body 6 to rotate by abutting against the outer surface of the fire alarm body 6. When the fire alarm body 6 rotates to the point where the wiring countersunk hole 601 is located directly below the bottom end of the square slide cylinder 18, the rubber roller 2 9 will roll to the inside of the wiring countersunk hole 601. At this time, the square slide 18 will move down a certain distance under the action of the second spring 25. The square slide 18 drives the pressure column 17 to move down a certain distance, so that the pressure column 17 presses the rotating rod 10 to drive it to move down a certain distance. At this time, the rotating rod 10 drives the surface of the rubber friction wheel 8 to leave the surface of the fire alarm body 6, and the fire alarm body 6 stops rotating. The position of the conductive rod 16 and the wiring countersunk hole 601 can be automatically aligned through this device without manual alignment one by one. When the fire alarm body 6 is tested in batches, the detection efficiency is greatly improved.

[0027] When the square slide 18 moves downward, it will drive the L-shaped top rod 27 to move downward for a distance. When the bottom end of the L-shaped top rod 27 abuts against the upper surface of the fire alarm body 6, the L-shaped top rod 27 will rotate. The L-shaped top rod 27 drives the conductive rod 16 to move downward through the second guide groove 31 and the second guide column 30, so that the bottom end of the conductive rod 16 abuts against the conductive sheet on the bottom wall of the wiring countersunk hole 601. The conductive rod 16 is electrically connected to an external test meter through a wire. The test meter energizes the fire alarm body 6 through the conductive rod 16 and tests whether the current can be connected. This device is convenient for quality inspection of the fire alarm body 6.

[0028] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A quality inspection device for a fire alarm, comprising a base (1) and a plurality of legs equidistantly fixedly mounted on the lower surface of the base (1), characterized in that: A rotating shaft (4) is rotatably mounted on the upper surface of the base (1), a rotating disk (7) is fixedly mounted on the top of the rotating shaft (4), a plurality of placement holes (701) are equidistantly provided on the upper surface of the rotating disk (7) in a circumferential direction, a fire alarm body (6) is arranged inside each of the plurality of placement holes (701), the outer shape of the fire alarm body (6) is conical, the inner wall of the placement hole (701) is matched with the outer shape of the fire alarm body (6), a plurality of installation grooves (702) are equidistantly provided on the inner wall of the placement hole (701), a rotating rod (10) is rotatably mounted between the top wall and the bottom wall of the installation groove (702), a rubber friction wheel (8) is fixedly mounted on the outer surface of the rotating rod (10), and the fire alarm body (6) is provided with a plurality of installation grooves (702) at equal intervals. The outer surface of the rubber friction wheel (8) abuts against the outer surface of the fire alarm body (6); a plurality of square slide columns (12) are equidistantly inserted and slidably provided on the upper surface of the turntable (7) in a circumferential direction; a fixing plate (13) is fixedly installed on the top of each of the plurality of square slide columns (12); two square slide cylinders (18) are symmetrically inserted and slidably provided on the upper surface of the fixing plate (13); the bottom ends of the two square slide cylinders (18) penetrate the lower surface of the fixing plate (13); the bottom ends of the square slide cylinders (18) are arranged in a triangular shape; two rubber rollers (29) are symmetrically installed and rotatably provided between the inner walls at opposite ends near the bottom of the square slide cylinder (18); the two rubber rollers (29) abut against the upper surface of the fire alarm body (6).

2. The quality detection device for a fire alarm according to claim 1 is characterized in that: The top and bottom ends of the rotating rod (10) respectively penetrate the upper and lower surfaces of the rotating disk (7) and are slidably mounted thereon. A first spring (11) is sleeved on the circumferential outer surface of the rotating rod (10) near the bottom end. The first spring (11) is arranged between the rubber friction wheel (8) and the bottom wall of the mounting groove (702). The top end of the first spring (11) is slidably mounted on the lower surface of the rubber friction wheel (8). The bottom end of the first spring (11) is slidably mounted on the bottom wall of the mounting groove (702). An annular internal gear (2) is fixedly mounted on the upper surface of the base (1). A driven gear (9) is fixedly mounted on the bottom end of the rotating rod (10) near the annular internal gear (2). The driven gear (9) is meshed with the annular internal gear (2). The width of the annular internal gear (2) is greater than the height of the mounting groove (702).

3. The quality detection device for a fire alarm according to claim 2 is characterized in that: The upper surface of the fire alarm body (6) is symmetrically provided with two wiring countersunk holes (601), the bottom end of the square slide (18) is matched with the wiring countersunk hole (601), the bottom wall of the wiring countersunk hole (601) is provided with a conductive sheet, the outer surface of the square slide (18) near the bottom end is fixedly provided with a retaining ring (26), the outer surface of the square slide (18) is sleeved with a second spring (25), the top end of the second spring (25) is fixedly connected to the lower surface of the fixed plate (13), the bottom end of the second spring (25) is fixedly connected to the upper surface of the retaining ring (26), and the outer surface of the retaining ring (26) near the annular inner gear (2) is fixedly provided with a pressure column (17), the bottom end of the pressure column (17) is against the top end of the rotating rod (10).

4. The quality detection device for a fire alarm according to claim 3 is characterized in that: A conductive rod (16) is slidably mounted on the inner wall of the square slide (18), and the bottom end of the conductive rod (16) passes through the bottom of the square slide (18) and abuts against the conductive sheet on the bottom wall of the wiring countersunk hole (601). Two L-shaped top rods (27) are symmetrically rotatably mounted on the outer surfaces of the two opposite sides near the bottom of the square slide (18), and a weight block is arranged at the bottom end of the L-shaped top rod (27). Two supports (28) are symmetrically fixedly mounted on the outer surfaces of the two opposite sides near the bottom of the conductive rod (16), and the inner walls of the two supports (28) are fixedly mounted with second guide columns (30). A second guide groove (31) is penetrated through the outer surface of the L-shaped top rod (27) near the top, and the second guide column (30) is slidably mounted on the inner wall of the second guide groove (31). Two limit grooves (1801) are symmetrically arranged on the outer surfaces of the two opposite sides near the bottom of the square slide (18), and the two supports (28) are slidably mounted on the inner walls of the two limit grooves (1801) respectively.

5. The quality detection device for a fire alarm according to claim 1, characterized in that: A plurality of groups of transmission rods are equidistantly rotatably mounted on the upper surface of the turntable (7), two by two in a group, and a pressure plate (14) is fixedly mounted on the top of each of the two transmission rods in a group. A rubber pressure wheel (15) is rotatably mounted on the lower surface of the other end of the pressure plate (14). The rubber pressure wheel (15) is arranged above the fire alarm body (6) and abuts against its upper surface. The outer circumferential surface of the rubber pressure wheel (15) is provided with a transition chamfer. The bottom end of the transmission rod passes through the lower surface of the turntable (7) and is fixedly mounted with a rotating plate (23).

6. The quality detection device for a fire alarm according to claim 5, characterized in that: A plurality of dovetail slide rails are fixedly installed at equal intervals in the circumferential direction of the lower surface of the turntable (7), and a slider (20) is slidably installed on the outer surfaces of the plurality of dovetail slide rails. Two connecting rods (24) are symmetrically rotatably installed on the outer surfaces of the sliders (20), and the other ends of the two connecting rods (24) are rotatably installed with the other ends of the two rotating plates (23) respectively. The bottom end of the square slide column (12) passes through the lower surface of the turntable (7), and a first guide groove (22) is penetrated through the outer surface of the square slide column (12) near the bottom end. A first guide column (21) is fixedly installed between the inner wall of the slider (20) near one end of the square slide column (12), and the first guide column (21) is slidably installed with the inner wall of the first guide groove (22).

7. A quality detection device for a fire alarm according to claim 6, characterized in that: A fixed cylinder (5) is fixedly mounted on the upper surface of the base (1), the rotating shaft (4) passes through the inner wall of the fixed cylinder (5), a driving groove (501) is provided on the circumferential outer surface of the fixed cylinder (5) near the top, a driving column (19) is fixedly mounted on the bottom end of the square sliding column (12), the driving column (19) is slidably mounted on the inner wall of the driving groove (501), a servo motor (3) is fixedly mounted on the lower surface of the base (1), and an output end of the servo motor (3) passes through the upper surface of the base (1) and is fixedly mounted at the rotation center of the rotating shaft (4).

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