Mechanical meter gauge tooth assembly

Abstract

The utility model relates to the technical field of mechanical meter meters, in particular to a mechanical meter meter tooth assembly. According to the technical scheme, a machine shell is arranged below a shell, an input transmission rod is rotationally installed in the shell, and an output transmission rod is rotationally installed in the machine shell. The input transmission rod is provided with a worm, the output transmission rod is provided with a worm gear, and the worm and the worm gear are meshed to ensure stable power transmission. The shell is provided with an access hole and an installation cover plate, sealing is achieved through clamping connection of a boss at the access hole and a cover plate sealing groove, overhauling is convenient, and meanwhile the sealing performance is guaranteed. One end of the shell is provided with a threaded opening, the input transmission rod is inserted into the threaded opening, and an end cover is installed at the threaded opening and is in threaded connection with the shell to facilitate installation and maintenance of the input transmission rod. According to the utility model, stable transmission is realized through worm and worm wheel meshing between the input transmission rod and the output transmission rod; through the design of the access hole, the boss and the sealing groove, maintenance is facilitated, and the sealing performance is guaranteed; the end cover is in threaded connection, installation and maintenance are convenient, and the overall performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical rice meter technical field, concretely relates to a mechanical rice meter tooth assembly. BACKGROUND

[0002] The mechanical mileage meter is connected with a flexible shaft, the flexible shaft is provided with a steel cable, the other end of the flexible shaft is connected into the crescent groove of the output shaft, the output shaft rotates to drive the steel cable to rotate, the steel cable drives a magnet in the cover ring of the mileage meter to rotate, the cover ring is connected with the pointer and places the pointer at zero position through the hairspring, the speed of the magnet rotation causes the change of the magnetic field, the balance is broken and the pointer is driven.

[0003] Through the retrieval, patent application No. CN202420004421.0 discloses a kind of mechanical rice meter tooth assembly, although the device is when using by being provided with box, the outer surface of the box is equipped with side cover on one side, the outer surface of the side cover is equipped with first connecting mechanism between the periphery and box, the outer surface of the side cover is rotatably connected with shaft sleeve at center position, the outer surface of the shaft sleeve and the position inside the box are fixedly equipped with worm wheel, by being provided with first connecting mechanism and second connecting mechanism, when needing to replace and maintain worm wheel and worm, side cover and top cover can be opened respectively, at this time, worm wheel and worm can be removed respectively, convenient to operate, to replace and maintain worm wheel and worm, but the device needs to be disassembled when using top cover, and disassembling top cover will cause worm wheel and worm to be completely exposed, which not only increases the risk of dust and impurities adhering to worm wheel and worm during maintenance, affecting the subsequent transmission accuracy and service life, but also when used in some special environments with high sealing requirements, the completely exposed worm wheel and worm may be damaged due to environmental factors. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of mechanical rice meter tooth assembly, solve the problems raised in background art.

[0005] The technical problem solved by the utility model is as follows:

[0006] A kind of mechanical rice meter tooth assembly, including shell, the lower part of the shell is equipped with machine shell, input transmission rod is rotatably installed in the shell, output transmission rod is rotatably installed in the machine shell;

[0007] Worm is equipped on the input transmission rod, worm wheel is equipped on the output transmission rod, and worm and worm wheel are engaged transmission, access hole is equipped on the shell, cover plate is installed at access hole, the shell is equipped with boss at access hole, sealing groove is equipped on the cover plate, the cover plate is sealed to access hole by being mutually clamped with boss through sealing groove;

[0008] One end of the shell is provided with a threaded port, the input transmission rod is inserted into the shell through the threaded port, and an end cover is installed at the threaded port of the shell and is engaged with the shell through threads.

[0009] Based on the technical scheme above, the utility model further has the following improvements.

[0010] Further, the cover plate and the shell are provided with connecting plates on both sides, and the cover plate and the shell are fixed by the connecting plates and bolts.

[0011] The beneficial effects of the further scheme are as follows:

[0012] The combination of the connecting plates and the bolts makes the connection between the cover plate and the shell firm and reliable. When the inside of the meter tooth assembly needs to be maintained, the operator can conveniently unscrew the bolts and disassemble the cover plate from the shell, which provides a convenient condition for checking, repairing or replacing the components. Meanwhile, compared with other complex connection structures, this connection structure has low cost and is easy to manufacture, which is conducive to improving the production efficiency and reducing the overall production cost.

[0013] Further, the input transmission rod is provided with sealing rings near both ends of the shell, and the input transmission rod and the shell are sealed by the sealing rings.

[0014] The beneficial effects of the further scheme are as follows:

[0015] The sealing rings can effectively prevent the leakage of lubricating oil inside the meter tooth assembly. The lubricating oil plays a good lubricating role inside, reduces the friction and wear between the transmission components, and prolongs the service life of the components. Meanwhile, the sealing rings can also prevent the invasion of external dust, impurities and moisture into the inside, avoid the damage of these foreign matters to the transmission components, such as corrosion and wear, and ensure that the internal transmission components are always in a good working environment, so as to ensure the stable operation of the meter tooth assembly and the accuracy of the measurement data.

[0016] Further, the end cover is provided with a clamping groove, and the end cover is disassembled and assembled by cooperating with a disassembling tool through the clamping groove.

[0017] The beneficial effects of the further scheme are as follows:

[0018] The clamping groove on the end cover provides great convenience for the installation and dismounting of the end cover. During the installation process, the operator can use the specially designed dismounting tool with the matching protrusion to easily screw the end cover into the threaded port of the shell by clamping the protrusion into the clamping groove, thus completing the installation operation. During the dismounting process, the tool is also used to conveniently and quickly screw the end cover out of the shell by clamping force, thus avoiding the difficulty in installation and dismounting due to the special installation position of the end cover or the limited operation space, and improving the assembly and maintenance efficiency.

[0019] Further, the shell is provided with a retaining ring at one end close to the threaded port, and the retaining ring is located between the sealing ring and the end cover.

[0020] The beneficial effects of the above further scheme are:

[0021] The retaining ring plays an important role in axial positioning and fixing between the sealing ring and the end cover. It can prevent the input transmission rod from being displaced due to axial force during the operation, and ensure that the input transmission rod always remains in the correct working position. This is crucial for ensuring the stability of the entire transmission structure, avoiding the deviation of the meshing of the worm and the worm gear due to the displacement of the input transmission rod, and thus affecting the transmission efficiency and accuracy, and finally ensuring that the odometer tooth assembly can work reliably to provide a solid guarantee for the accurate measurement of the vehicle mileage and other data.

[0022] The utility model provides a kind of mechanical odometer tooth assembly. It has the following beneficial effects:

[0023] The input transmission rod is provided with a sealing ring at both ends, which can effectively prevent lubricating oil from leaking, ensure good lubrication and normal operation inside, and avoid wear and other problems caused by leakage. At the same time, the access hole is reliably sealed by the mutual clamping of the boss on the shell and the sealing groove on the cover plate, preventing dust, moisture and other impurities from entering and ensuring the performance and service life of the odometer tooth assembly.

[0024] The worm on the input transmission rod and the worm gear on the output transmission rod are meshed and transmitted, which has the characteristics of large transmission ratio, smoothness and low noise, and can accurately transmit rotation to ensure the accurate measurement of vehicle mileage and other data by the odometer.

[0025] The shell is provided with an access hole, which is fixed by a cover plate, a connecting plate and bolts. During maintenance, the cover plate can be removed by unscrewing the bolts, without the need for large-scale disassembly, significantly improving the maintenance efficiency and reducing the maintenance cost.

[0026] A clamping groove is designed on the end cover, which can cooperate with the dismounting tool to facilitate the installation and dismounting of the end cover and related components, and improve the convenience of assembly and maintenance.

[0027] The blocking ring is located between the sealing ring and the end cover, plays an axial positioning and fixing role, prevents axial displacement of the parts, ensures the relative position accuracy of each part during work, and makes the overall structure more compact and stable. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application. Together with the general description of the present application, the drawings serve to explain the present application, and do not constitute an improper limitation of the present application.

[0029] In the drawings:

[0030] Fig. 1 is a rear view appearance schematic diagram of the present application;

[0031] Fig. 2 is a front view appearance schematic diagram of the present application;

[0032] Fig. 3 is a sectional structure schematic diagram of the present application.

[0033] In the drawings, the component list represented by each number is as follows:

[0034] 1, connecting plate; 2, cover plate; 201, sealing groove; 3, shell; 301, boss; 4, input transmission rod; 401, sealing ring; 402, worm; 5, machine shell; 6, output transmission rod; 601, worm wheel; 7, end cover; 701, clamping groove; 8, blocking ring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figs. 1-3 The embodiments provided by the present application:

[0037] Embodiment one: a mechanical rice meter tooth assembly, comprising a shell 3, a lower part of the shell 3 is provided with a casing 5, a input transmission rod 4 is rotatably installed in the shell 3, a sealing ring 401 is arranged on the input transmission rod 4 near the two ends of the shell 3, the input transmission rod 4 and the shell 3 are sealed by the sealing ring 401, and the sealing ring 401 can effectively prevent the leakage of lubricating oil in the rice meter tooth assembly. The lubricating oil plays a good lubricating effect inside, reduces the friction and wear between the transmission parts, and prolongs the service life of the parts. At the same time, the sealing ring 401 can also prevent the invasion of external dust, impurities and moisture into the inside, avoid the damage of these foreign matters to the transmission parts such as corrosion and wear, and ensure that the internal transmission parts are always in a good working environment, so as to ensure the stable operation of the rice meter tooth assembly and the accuracy of the measurement data, the casing 5 is rotatably installed with an output transmission rod 6, a worm 402 is arranged on the input transmission rod 4, a worm wheel 601 is arranged on the output transmission rod 6, and the worm 402 and the worm wheel 601 are in meshing transmission, a maintenance opening is arranged on the shell 3, a cover plate 2 is installed at the maintenance opening, connecting plates 1 are arranged on both sides of the cover plate 2 and the shell 3, the cover plate 2 and the shell 3 are fixed by the connecting plates 1 and bolts, and the combination of the connecting plates 1 and the bolts makes the connection between the cover plate 2 and the shell 3 firm and reliable. When the internal part of the rice meter tooth assembly needs to be maintained, the operator can conveniently unscrew the bolt and remove the cover plate 2 from the shell 3, which provides a convenient condition for entering the inside to check, repair or replace the parts. At the same time, compared with other complex connection structures, the cost is lower and the processing and manufacturing are easier, which is conducive to improving the production efficiency and reducing the overall production cost, the shell 3 at the maintenance opening is provided with a boss 301, the cover plate 2 is provided with a sealing groove 201, and the cover plate 2 is sealed by being clamped with the boss 301 through the sealing groove 201.

[0038] Embodiment two: in order to facilitate the disassembly and assembly of the input transmission rod 4 in the shell 3, for example, Figs. 1-3As shown, the utility model also includes: one end of shell 3 is equipped with the screw thread mouth, input drive rod 4 is inserted into shell 3 through the screw thread mouth, and the screw thread mouth of shell 3 is equipped with end cap 7, end cap 7 is engaged and is connected through the screw with shell 3, end cap 7 is equipped with the clamping groove 701, end cap 7 is disassembled and is assembled through the clamping groove 701 and disassembly tool cooperation, the clamping groove 701 on end cap 7 provides great convenience for the installation and disassembly of end cap 7. In the installation process, the operator can help the specially designed disassembly tool with the matching protrusion, the protrusion is clamped into the clamping groove 701, and the end cap 7 is easily screwed into the screw thread mouth of shell 3, and the installation operation is completed. When disassembling, the tool is also used, and the end cap 7 is conveniently and quickly screwed out of the shell 3 by clamping groove 701, avoiding the difficulty of installation and disassembly caused by the special installation position of end cap 7 or limited operation space, improving the assembly and maintenance efficiency, and the end of shell 3 close to the screw thread mouth is equipped with a check ring 8, and the check ring 8 is located between the sealing ring 401 and the end cap 7, and the check ring 8 plays an important role in axial positioning and fixing between the sealing ring 401 and the end cap 7. It can prevent the input drive rod 4 from moving due to axial force during work, and ensure that the input drive rod 4 always remains in the correct working position. This is crucial to ensure the stability of the entire transmission structure, avoiding the deviation of the engagement of the worm 402 and the worm wheel 601 caused by the displacement of the input drive rod 4, thereby affecting the transmission efficiency and accuracy, and finally ensuring that the odometer tooth assembly can work reliably, providing a solid guarantee for the accurate measurement of vehicle mileage data.

[0039] Working principle:

[0040] The power of the vehicle is transmitted to the input drive rod 4 through the external connecting device. The input drive rod 4 is inserted into the shell 3 through the screw thread mouth at one end of the shell 3, and the input drive rod 4 is sealed between the shell 3 by the sealing ring 401 to prevent internal lubricating oil leakage and external impurities from entering. This sealing structure ensures that the lubricating environment inside the meter tooth assembly is stable during power transmission, ensuring smooth transmission. When the vehicle is running, the driving device drives the input drive rod 4 to start rotating.

[0041] The input drive rod 4 is provided with a worm 402, and the worm 402 rotates synchronously with the rotation of the input drive rod 4. The output drive rod 6 rotatingly installed in the casing 5 is provided with a worm wheel 601, and the worm 402 and the worm wheel 601 are engaged with each other. According to the transmission principle of the worm 402 and the worm wheel 601, the rotation of the worm 402 will drive the worm wheel 601 to rotate at a reduced speed, and this transmission mode has the characteristics of large transmission ratio, smooth transmission and low noise. Through the accurate design of the worm 402 and the worm wheel 601 parameters, the high-speed rotation of the input drive rod 4 is converted into the low-speed rotation of the output drive rod 6 according to a certain transmission ratio, thereby meeting the accuracy requirements of the meter for the measurement of mileage data.

[0042] The output transmission rod 6 continues to rotate under the driving of the worm wheel 601, and the rotation amount corresponds to the mileage information of the vehicle. The rotation of the output transmission rod 6 can be converted into an intuitive mileage value through a subsequent connecting device (such as a meter counting mechanism) and displayed on the vehicle instrument, thereby providing accurate driving mileage data for the driver.

[0043] When the meter tooth assembly needs to be overhauled, the cover plate 2 is installed on the maintenance opening of the shell 3, and the cover plate 2 and the shell 3 are fixed by the connecting plates 1 on both sides and the bolts. Only by unscrewing the bolts, and by using the structure characteristics that the boss 301 and the sealing groove 201 at the maintenance opening of the cover plate 2 and the shell 3 are mutually clamped, the cover plate 2 can be conveniently removed, and the internal worm 402, worm wheel 601, input transmission rod 4, output transmission rod 6 and other components can be checked, repaired or replaced. After the overhaul is completed, the cover plate 2 is reinstalled to the original position, fastened by the connecting plates 1 and the bolts, and the sealing groove 201 and the boss 301 are tightly clamped to restore the sealing property of the meter tooth assembly.

[0044] When installing the input transmission rod 4, the end cover 7 is installed after being inserted into the threaded opening of the shell 3. The end cover 7 is connected by threads with the shell 3, and the end cover 7 is provided with a clamping groove 701, which facilitates the installation and disassembly operation by using a specific disassembly tool. The retaining ring 8 is located between the sealing ring 401 and the end cover 7, which plays a role in axial positioning and fixing the input transmission rod 4, preventing the input transmission rod 4 from moving axially during work, ensuring the stability and accuracy of the entire transmission structure, and further ensuring the reliability of the meter tooth assembly.

[0045] The basic principle and main features of the present application and the advantages of the present application are shown and described above. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A mechanical meter gear assembly, comprising a housing (3), a casing (5) below the housing (3), an input transmission rod (4) rotatably mounted inside the housing (3), and an output transmission rod (6) rotatably mounted inside the casing (5), characterized in that: The input transmission rod (4) is provided with a worm (402), the output transmission rod (6) is provided with a worm wheel (601), and the worm (402) and the worm wheel (601) mesh and transmit power. The outer shell (3) is provided with an inspection port, and a cover plate (2) is installed at the inspection port. The outer shell (3) is provided with a boss (301) at the inspection port. The cover plate (2) is provided with a sealing groove (201). The cover plate (2) seals the inspection port by interlocking with the boss (301) through the sealing groove (201). One end of the outer shell (3) is provided with a threaded opening, the input transmission rod (4) is inserted into the outer shell (3) through the threaded opening, and an end cap (7) is installed at the threaded opening of the outer shell (3), the end cap (7) is engaged with the outer shell (3) through threads.

2. The mechanical meter gear assembly according to claim 1, characterized in that: The cover plate (2) and the outer shell (3) are provided with connecting plates (1) on both sides, and the cover plate (2) and the outer shell (3) are locked and fixed by the connecting plates (1) and bolts.

3. The mechanical meter gear assembly according to claim 1, characterized in that: The input transmission rod (4) is provided with sealing rings (401) at both ends near the outer shell (3), and the input transmission rod (4) and the outer shell (3) are sealed by the sealing rings (401).

4. The mechanical meter gear assembly according to claim 1, characterized in that: The end cap (7) is provided with a slot (701), and the end cap (7) is disassembled and assembled with a disassembly and assembly tool through the slot (701).

5. The mechanical meter gear assembly according to claim 1, characterized in that: The outer casing (3) has a retaining ring (8) at one end near the threaded opening, and the retaining ring (8) is located between the sealing ring (401) and the end cap (7).

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