Glass slide belt type intelligent spore capturing instrument
Through the glass-belt intelligent spore capture instrument, the glass-belt drives the glass-belt to automatically capture spores with the supply wheel and the recycling wheel, and the observation is combined with an electron microscope and adjustment components, which solves the problem of cumbersome operation in the existing technology and improves the detection efficiency and Convenience.
Patent Information
- Application Number
- CN202220374515.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2022-02-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2032-02-24
AI Technical Summary
The existing spore capture device requires staff to replace the slides every day and take them back to the laboratory for observation, resulting in cumbersome operation.
A glass belt-type intelligent spore capture instrument was designed, using supply wheel and recycling wheel to drive the glass belt, combining guide assembly and tension assembly, and the glass belt is driven by a motor to rotate between the supply wheel and the recycling wheel to realize spores. Capture and recycle, and are equipped with electron microscope and conditioning components for easy observation and recording.
The automatic recycling and observation of glass belts is realized, which reduces the operating frequency of staff, improves detection efficiency, and simplifies the spore capture and observation process.
Smart Images
Figure CN222139118U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detecting plant diseases and insect pests, in particular to a glass-carrying belt type intelligent spore capturing instrument. Background Art
[0002] Pathogen spores are an important factor causing plant disease. In modern agricultural plant protection work, capturing pathogen spores and detecting changes in pathogen spores can play a good preventive role in the occurrence of plant diseases.
[0003] Currently, fixed spore capture devices are commonly used. The current spore capture devices require staff to replace the glass slides every day and take the glass slides back to the laboratory for observation. It is very troublesome for staff to frequently replace the glass slides. Therefore, a spore capture device that solves the above problems is needed. Utility Model Content
[0004] In order to solve the problem that the current spore capture instrument requires staff to replace the slide every day and take the slide back to the laboratory for observation, which is very troublesome for staff to frequently replace the slide, a slide belt type intelligent spore capture instrument is invented.
[0005] The technical solution of the utility model is to include a fixedly connected support frame and a panel, wherein the panel is rotatably connected to a supply wheel and a recovery wheel through a first rotating shaft and a second rotating shaft, a glass carrier tape with single-sided adhesive is wound on the supply wheel and the recovery wheel, the first rotating shaft and the second rotating shaft are respectively connected to a first motor and a second motor, a first guide assembly, a second guide assembly, a third guide assembly and a tensioning assembly are rotatably connected to the panel, the glass carrier tape bypasses the first guide assembly, the second guide assembly, the third guide assembly and the tensioning assembly from the supply wheel to connect to the recovery wheel, a capture assembly is fixed on the panel, the glass carrier tape passes through the capture assembly, a three-dimensional slide is fixed on the support frame, an electron microscope is fixed on the three-dimensional slide, a support plate is fixed to the support frame and the panel below the electron microscope, an adjustment assembly is fixed on the support plate, and the glass carrier tape passes through between the electron microscope and the adjustment assembly.
[0006] Preferably, the first guide assembly, the second guide assembly, the third guide assembly and the tensioning assembly are respectively located on panels on both sides of the supply wheel and the recovery wheel, and the second guide assembly and the third guide assembly are on the same horizontal plane.
[0007] Preferably, the first guide assembly or the second guide assembly or the third guide assembly includes a first connecting column, a first limiting plate, a second limiting plate and a sleeve, the first limiting plate is fixed on the first connecting column, one end of the first connecting column passes through the panel and is threadedly connected with a fixing nut, the second limiting plate and the sleeve are sleeved outside the first connecting column, and the sleeve is located between the first limiting plate and the second limiting plate to form an I-shaped wheel structure, the glass-carrying tape is in conflict with the sleeve in the I-shaped wheel structure, and a slot is provided at one end of the first connecting column close to the first limiting plate, and a positioning plate is clamped in the slot.
[0008] Preferably, the tensioning assembly includes a second connecting column, a support seat, a third limiting plate and a tensioning rod, the support seat is fixed on the panel, the second connecting column is fixed on the support seat, the third limiting plate is threadedly connected to the second connecting column, there are two tensioning rods that are symmetrically threaded on the third limiting plate, and the glass carrier belt is between the third limiting plate and the support seat and conflicts with one of the tensioning rods.
[0009] Preferably, the capture assembly includes a fixed plate, a first electric telescopic rod, a capture platform, a capture cover, an air inlet duct and an air outlet duct, the first electric telescopic rod is fixed to the panel through the fixed plate, the capture platform is fixed to the protruding end of the first electric telescopic rod, the capture cover is fixed to the panel above the capture platform, the glass carrier belt passes through the gap between the capture platform and the capture cover, the air inlet duct and the air outlet duct are vertically connected to the capture cover, and the air inlet duct is vertically arranged to the glass carrier belt.
[0010] Preferably, the adjustment assembly includes a second electric telescopic rod and an observation platform, the second electric telescopic rod is fixed on the support plate, the observation platform is fixed on the extended end of the second electric telescopic rod, and the glass carrier tape passes through the gap between the observation platform and the electron microscope.
[0011] Preferably, the first motor and the second motor are fixedly connected with a connecting plate, the connecting plate is fixed on the panel, the first rotating shaft and the second rotating shaft are respectively fixed with a first counting wheel and a second counting wheel, the panel is fixed with a first counting sensor and a second counting sensor, the edge of the first counting wheel passes through the first counting sensor, and the edge of the second counting wheel passes through the second counting sensor.
[0012] The following beneficial effects can be achieved by adopting the technical solution of the utility model: (1) through the first rotating shaft, the second rotating shaft, the supply wheel, the recovery wheel, the first motor and the second motor, the first motor can drive the supply wheel to rotate through the first rotating shaft, and the second motor can drive the recovery wheel to rotate, thereby realizing the glass carrier tape rotating and recovering between the supply wheel and the recovery wheel; (2) through the first guide assembly, the second guide assembly, the third guide assembly and the tensioning assembly, it is convenient to support the glass carrier tape and change the movement direction of the glass carrier tape at the same time; (3) through the capture assembly, it is convenient to adhere the spores to the glue on the glass carrier tape through the wind; (4) through the three-dimensional slide and the electron microscope, It is convenient to adjust the position of the electron microscope, so that the electron microscope can better observe the situation of spores on the glass slide, and it is convenient to take pictures and record; (5) by adjusting the component, it is convenient to adjust the distance between the glass slide and the electron microscope, and then cooperate with the three-dimensional slide table to make the electron microscope more clearly observe the situation of spores on the glass slide; (6) through the first counting wheel, the second counting wheel, the first counting sensor and the second counting sensor, it is convenient to record the rotation of the supply wheel and the recovery wheel, and then record the use of the glass slide; the technical solution of the utility model has broad application prospects in the field of plant disease and insect pest detection technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a three-dimensional glass-carrying belt type intelligent spore capture device. Figure 1 .
[0014] Figure 2 The utility model is a three-dimensional glass-carrying belt type intelligent spore capture device. Figure 2 .
[0015] Among them, 1, support frame, 2, panel, 3, supply wheel, 4, first rotating shaft, 5, first motor, 6, first counting wheel, 7, first counting sensor, 8, recovery wheel, 9, second rotating shaft, 10, second motor, 11, second counting wheel, 12, second counting sensor, 13, glass carrier, 14, first guide assembly, 15, second guide assembly, 16, third guide assembly, 101, first connecting column, 102, first limit plate, 103, The second limit plate, 104, the sleeve, 105, the positioning plate, 17, the tensioning assembly, 201, the second connecting column, 202, the support seat, 203, the third limit plate, 204, the tensioning rod, 18, the fixing plate, 19, the first electric telescopic rod, 20, the capture platform, 21, the capture cover, 22, the air inlet pipe, 23, the air outlet pipe, 24, the three-dimensional slide, 25, the electron microscope, 26, the support plate, 27, the second electric telescopic rod, 28, the observation platform. DETAILED DESCRIPTION
[0016] The following will clearly and completely describe the technical solutions of various embodiments of the utility model in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. In the description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the utility model 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 therefore cannot be understood as a limitation on the utility model.
[0017] In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it 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 utility model can be understood according to specific circumstances.
[0018] like Figure 1-2The glass-carrying tape type intelligent spore capture device shown comprises a support frame 1 and a panel 2 which are detachably fixedly connected by bolts, so that the entire device can be supported by the support frame 1, and other components can be supported and connected by the panel 2. The panel 2 is rotatably connected with a supply wheel 3 and a recovery wheel 8 through a first rotating shaft 4 and a second rotating shaft 9, so that the supply wheel 3 and the recovery wheel 8 can rotate with the first rotating shaft 4 and the second rotating shaft 9. The supply wheel 3 and the recovery wheel 8 are wrapped with a glass-carrying tape 13 with a single side adhesive, so that the glass-carrying tape 13 can be transferred between the supply wheel 3 and the recovery wheel 8, and the glass-carrying tape 13 with adhesive is convenient for spores to adhere to the glass-carrying tape 13, so that it is convenient to move with the glass-carrying tape 13, so that the electron microscope 25 can better observe the spores on the glass-carrying tape 13. The first rotating shaft 4 and the second rotating shaft 9 are respectively fixedly connected with a first motor 5 and a second motor 10 through a coupling, so that the first rotating shaft 4 is driven to rotate by the first motor 5, so as to drive the supply wheel 3 to rotate, and the second rotating shaft 9 is driven to rotate by the second motor 10, so as to drive the recovery wheel 8 to rotate. The first motor 5 and the second motor 10 are detachably fixedly connected with a connecting plate 29 by bolts, and the connecting plate 29 is detachably fixed on the panel 2 by bolts, so that the first motor 5 and the second motor 10 are connected to the panel 2 through the connecting plate 29, and the first motor 5 and the second motor 10 are supported and limited by the connecting plate 29. The panel 2 is rotatably connected with a first guide assembly 14, a second guide assembly 15, a third guide assembly 16 and a tensioning assembly 17, and the glass carrier belt 13 is connected to the recovery wheel 8 from the supply wheel 3 by bypassing the first guide assembly 14, the second guide assembly 15, the third guide assembly 16 and the tensioning assembly 17, so that the glass carrier belt 13 is tensioned by the first guide assembly 14, the second guide assembly 15, the third guide assembly 16 and the tensioning assembly 17, and the moving direction of the glass carrier belt 13 is changed, so that the glass carrier belt 13 can adhere to the spores, and then the spores can be observed and photographed. The panel 2 is detachably fixed with a capture component by bolts, and the glass slide 13 passes through the capture component, so that the spores can be attached to the glue on the glass slide 13 by the capture component, and then can be moved with the glass slide 13 to the electron microscope 25 for observation and photography. The support frame 1 is detachably fixed with a three-dimensional slide 24 by bolts, and the three-dimensional slide 24 is detachably fixed with an electron microscope 25 by bolts. The three-dimensional slide 24 and the electron microscope 25 are both common products on the market, and the electron microscope 25 can be conveniently connected to the support frame 1 by the three-dimensional slide 24. At the same time, the electron microscope 25 can be adjusted by the three-dimensional slide 24, so that the electron microscope 25 can better observe the spores on the glass slide 13, and it is convenient to take pictures and record the spores.The support frame 1 and the panel 2 below the electron microscope 25 are detachably fixed with a support plate 26 by bolts, and an adjustment component is detachably fixed on the support plate 26 by bolts. The glass carrier tape 13 passes through between the electron microscope 25 and the adjustment component, so that the adjustment component is supported by the support plate 26. The glass carrier tape 13 is supported by the adjustment component so that the glass carrier tape 13 passes over the adjustment component. At the same time, the distance between the glass carrier tape 13 and the electron microscope 25 can be hinged by the adjustment component, so that the electron microscope 25 can better observe the spores on the glass carrier tape 13.
[0019] like Figure 1-2In the glass-carrying belt type intelligent spore capture instrument shown, the first guide assembly 14, the second guide assembly 15, the third guide assembly 16 and the tensioning assembly 17 are respectively located on the panels 2 on both sides of the supply wheel 3 and the recovery wheel 8, and the second guide assembly 15 and the third guide assembly 16 are on the same horizontal plane, so that the first guide assembly 14, the second guide assembly 15, the third guide assembly 16 and the tensioning assembly 17 can better tension and adjust the rotation direction of the glass-carrying belt 13, thereby facilitating the spores to adhere and fix on the glass-carrying belt 13, thereby facilitating the electron microscope 25 to observe the spores on the glass-carrying belt 13 more conveniently. The first guide assembly 14 or the second guide assembly 15 or the third guide assembly 16 includes a first connecting column 101, a first limiting plate 102, a second limiting plate 103 and a sleeve 104, the first limiting plate 102 is welded and fixed on the first connecting column 101, and the first limiting plate 102 on the first connecting shaft is connected together to form a whole. One end of the first connecting column 101 penetrates the panel 2 and is threadedly connected with a fixing nut, so that the first connecting column 101 can be fixed on the panel 2 through the fixing nut and the first limiting plate 102. The second limiting plate 103 and the sleeve 104 are sleeved outside the first connecting column 101, and the sleeve 104 is located between the first limiting plate 102 and the second limiting plate 103 to form a type wheel structure. The glass-carrying belt 13 conflicts with the sleeve 104 in the type wheel structure, so that the type wheel structure formed by the first limiting plate 102, the sleeve 104 and the second limiting plate 103 limits the glass-carrying belt 13, so that the glass-carrying belt 13 can only move in the groove of the type wheel structure, so as to prevent the glass-carrying belt 13 from being separated from the first guide assembly 14, the second guide assembly 15 and the third guide assembly 16, and at the same time, the sleeve 104 is used to reduce the friction between the glass-carrying belt 13 and the first guide assembly 14, the second guide assembly 15 and the third guide assembly 16. A slot is provided at one end of the first connecting column 101 close to the first limiting plate 102, and a positioning piece 105 is clamped in the slot, so that the second limiting plate 103 and the sleeve 104 can be limited by the positioning piece 105 to prevent the second limiting plate 103 and the sleeve 104 from being separated from the first connecting column 101. At the same time, the clamping connection between the positioning piece 105 and the slot facilitates the rapid disassembly and assembly of the second limiting plate 103 and the sleeve 104. The tensioning assembly 17 includes a second connecting column 201, a support seat 202, a third limiting plate 203 and a tensioning rod 204. The support seat 202 is detachably fixed to the panel 2 by bolts, so that the support seat 202 is connected to the panel 2, thereby supporting and limiting the entire tensioning assembly 17. The second connecting column 201 is plugged and fixed to the support seat 202, so that the second connecting column 201 is connected to the support seat 202. The third limit plate 203 is threadedly connected to the second connection column 201, so that the third limit plate 203 and the second connection column 201 are detachably connected. Two tension rods 204 are symmetrically threadedly connected to the third limit plate 203, so that the tension rod 204 and the third limit plate 203 are connected together.The glass carrier belt 13 is between the third limiting plate 203 and the support seat 202 and contacts one of the tensioning rods 204 , so that the glass carrier belt 13 can be tensioned by the tensioning rod 204 , thereby facilitating the glass carrier belt 13 to move stably.
[0020] like Figure 1-2 The glass-carrying tape type intelligent spore capture instrument shown in the figure has a capture assembly including a fixing plate 18, a first electric telescopic rod 19, a capture platform 20, a capture cover 21, an air inlet pipe 22 and an air outlet pipe 23. The first electric telescopic rod 19 is detachably fixed to the panel 2 by bolts through the fixing plate 18, so that the first electric telescopic rod 19 is connected to the panel 2. The capture platform 20 is detachably fixed to the extended end of the first electric telescopic rod 19 by bolts, so that the capture platform 20 is moved by the extension of the first electric telescopic rod 19. The capture cover 21 is detachably fixed to the panel 2 above the capture platform 20 by bolts, and the glass-carrying tape 13 passes through the gap between the capture platform 20 and the capture cover 21, so that the capture cover 21 is connected to the panel 2, and the spores are limited by the capture cover 21, so that the spores can be adhered and fixed to the glue on the glass-carrying tape 13. The air inlet pipe 22 and the air outlet pipe 23 are vertically connected to the capture cover 21, and the air inlet pipe 22 is vertically arranged with the glass carrier belt 13. The glass carrier belt 13 passes through the connection between the air inlet pipe 22 and the air outlet pipe 23, so that the spores entering from the air inlet pipe 22 with the wind contact with the glass carrier belt 13 at the first time, and then adhere to and fix on the glass carrier belt 13. The air inlet pipe 22 is connected to the air outlet pipe 23 of the exhaust fan, so that the spores on the plant are extracted by the exhaust fan and then transported to the glass carrier belt 13 through the air inlet pipe 22.
[0021] like Figure 1-2 The slide-type intelligent spore capture instrument shown in the figure has an adjustment component including a second electric telescopic rod 27 and an observation platform 28. The second electric telescopic rod 27 is detachably fixed to the support plate 26 by bolts, so that the second electric telescopic rod 27 and the support plate 26 are connected together, thereby realizing the support limitation of the support plate 26 on the second electric telescopic rod 27. The observation platform 28 is detachably fixed to the protruding end of the second electric telescopic rod 27 by bolts, and the slide 13 passes through the gap between the observation platform 28 and the electron microscope 25, so that the observation platform 28 can move with the extension and contraction of the second electric telescopic rod 27, thereby adjusting the distance between the slide 13 on the observation platform 28 and the electron microscope 25, thereby facilitating the electron microscope 25 to observe the spores on the slide 13, and at the same time, using the observation platform 28 facilitates the electron microscope 25 to better observe the spores on the slide 13.
[0022] like Figure 1-2In the glass-carrying belt type intelligent spore capture instrument shown, the first counting wheel 6 and the second counting wheel 11 are detachably fixed to the first rotating shaft 4 and the second rotating shaft 9 respectively by screws, so that the first counting wheel 6 and the second counting wheel 11 can rotate along with the first rotating shaft 4 and the second rotating shaft 9 respectively. The first counting sensor 7 and the second counting sensor 12 are detachably fixed to the panel 2 by bolts, the edge of the first counting wheel 6 passes through the first counting sensor 7, and the edge of the second counting wheel 11 passes through the second counting sensor 12, so that the first counting sensor 7 and the second counting sensor 12 can record the rotation of the first counting wheel 6 and the second counting wheel 11, and then record the travel length of the glass-carrying belt 13 between the supply wheel 3 and the recovery wheel 8.
[0023] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A glass-slide-type intelligent spore capture device, comprising a support frame (1) and a panel (2) that are fixedly connected, wherein: The panel (2) is rotatably connected to a supply wheel (3) and a recovery wheel (8) via a first rotating shaft (4) and a second rotating shaft (9); a glass carrier tape (13) with a single-sided adhesive is wound around the supply wheel (3) and the recovery wheel (8); the first rotating shaft (4) and the second rotating shaft (9) are respectively connected to a first motor (5) and a second motor (10); a first guide assembly (14), a second guide assembly (15), a third guide assembly (16) and a tensioning assembly (17) are rotatably connected to the panel (2); the glass carrier tape (13) passes through the first guide assembly (14), the second guide assembly (15), the third guide assembly (16) and the tensioning assembly (17) from the supply wheel (3). The guide assembly (15), the third guide assembly (16) and the tensioning assembly (17) are connected to the recovery wheel (8); a capture assembly is fixed on the panel (2); the glass carrier belt (13) passes through the capture assembly; a three-dimensional slide table (24) is fixed on the support frame (1); an electron microscope (25) is fixed on the three-dimensional slide table (24); a support plate (26) is fixed on the support frame (1) and the panel (2) below the electron microscope (25); an adjustment assembly is fixed on the support plate (26); and the glass carrier belt (13) passes through between the electron microscope (25) and the adjustment assembly.
2. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The first guide assembly (14), the second guide assembly (15), the third guide assembly (16) and the tensioning assembly (17) are respectively located on the panels (2) on both sides of the supply wheel (3) and the recovery wheel (8), and the second guide assembly (15) and the third guide assembly (16) are on the same horizontal plane.
3. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The first guide assembly (14) or the second guide assembly (15) or the third guide assembly (16) comprises a first connecting column (101), a first limiting plate (102), a second limiting plate (103) and a sleeve (104); the first limiting plate (102) is fixed on the first connecting column (101); one end of the first connecting column (101) passes through the panel (2) and is threadedly connected to a fixing nut; the second limiting plate (103) and the sleeve (104) are sleeved outside the first connecting column (101); and the sleeve (104) is located between the first limiting plate (102) and the second limiting plate (103) to form an I-shaped wheel structure; the glass carrier tape (13) is in conflict with the sleeve (104) in the I-shaped wheel structure; and a slot is provided at one end of the first connecting column (101) close to the first limiting plate (102); a positioning piece (105) is clamped in the slot.
4. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The tensioning assembly (17) comprises a second connecting column (201), a support seat (202), a third limiting plate (203) and a tensioning rod (204); the support seat (202) is fixed on the panel (2); the second connecting column (201) is fixed on the support seat (202); the third limiting plate (203) is threadedly connected to the second connecting column (201); the tensioning rod (204) has two threads that are symmetrically threadedly connected to the third limiting plate (203); the glass carrier belt (13) is between the third limiting plate (203) and the support seat (202) and is in conflict with one of the tensioning rods (204).
5. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The capture assembly comprises a fixing plate (18), a first electric telescopic rod (19), a capture platform (20), a capture cover (21), an air inlet pipe (22) and an air outlet pipe (23); the first electric telescopic rod (19) is fixed to the panel (2) via the fixing plate (18); the capture platform (20) is fixed to the protruding end of the first electric telescopic rod (19); the capture cover (21) is fixed to the panel (2) above the capture platform (20); the glass carrier belt (13) passes through a gap between the capture platform (20) and the capture cover (21); the air inlet pipe (22) and the air outlet pipe (23) are vertically connected to the capture cover (21); the air inlet pipe (22) is vertically arranged to the glass carrier belt (13); and the air inlet pipe (22) is connected to the air outlet pipe (23) of an exhaust fan.
6. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The adjustment assembly comprises a second electric telescopic rod (27) and an observation platform (28); the second electric telescopic rod (27) is fixed on a support plate (26); the observation platform (28) is fixed to an extended end of the second electric telescopic rod (27); and the glass carrier belt (13) passes through a gap between the observation platform (28) and the electron microscope (25).
7. The glass-belt-type intelligent spore capture device according to claim 1, characterized in that: The first motor (5) and the second motor (10) are fixedly connected to a connecting plate (29), the connecting plate (29) being fixed on the panel (2), the first rotating shaft (4) and the second rotating shaft (9) being respectively fixed to a first counting wheel (6) and a second counting wheel (11), the panel (2) being fixed to a first counting sensor (7) and a second counting sensor (12), the edge of the first counting wheel (6) passing through the first counting sensor (7), and the edge of the second counting wheel (11) passing through the second counting sensor (12).