Device for assembling character wheel bin, character wheel and wheel shaft of water meter metering display

Abstract

The utility model discloses a device for assembling a character wheel bin, character wheels and wheel shafts of a water meter metering display, which comprises a vertical supporting seat, two first vertical sliding rods are arranged on the vertical supporting seat, two first vertical sliding sleeves are arranged on the first vertical sliding rods in a sliding fit mode, a pressing plate used for pressing a plurality of wheel shafts at the same time is fixed on the two first vertical sliding sleeves, and the pressing plate is arranged on the vertical supporting seat. A pressure spring is arranged on each vertical first sliding rod, one end of each pressure spring abuts against the corresponding pressing plate, and the other end of each pressure spring abuts against the bottom of the corresponding vertical supporting seat; the device further comprises a second vertical sliding sleeve fixed to the upper portion of the vertical supporting base, a second vertical sliding rod is arranged in the second vertical sliding sleeve in a sliding fit mode, the top of the second vertical sliding rod is hinged to the bottom of a lifting or descending component of a lever type wrenching assembly, and the bottom of the second vertical sliding rod is fixed to the pressing plate. And the structure is fixed at the lower part of the vertical supporting seat and is used for being detachably fixed with a plurality of character wheel bin shells which are arranged side by side. The device is labor-saving in assembly, high in efficiency, low in equipment cost and low in failure rate.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter assembly equipment, in particular to an assembly device for a character wheel bin, a character wheel and a wheel shaft of a water meter measurement display. Background Art

[0002] The metering display of the water meter head is a component on the water meter used to display the amount of water used. It includes a character wheel bin composed of a shell and a cover body. There are multiple continuous and parallel character wheels in the character wheel bin shell and the character wheel bin cover body. A wheel shaft passes through the center holes of all the character wheels to string the character wheels together.

[0003] In the prior art, there are two ways to assemble the character wheel bin, character wheel and wheel axle of the water meter display:

[0004] One is full manual assembly: put the multi-stage character wheels close to each other and put them in a row, and then put the cover on, and then insert the wheel shaft from the shaft hole on one end wall of the character wheel cover, and then insert it through the center hole of all the character wheels and then insert it into the shaft hole at the other end of the character wheel cover. It is not difficult to understand that this assembly method is laborious, the labor intensity of workers is high, the speed is slow, and the efficiency is low.

[0005] The second is to use automated assembly equipment, such as assembly lines, which have a high degree of automation, low labor intensity, high speed and high efficiency. However, there are still some shortcomings in actual use. The cost of large-scale equipment is too high, and the precision requirements are high. Relatively speaking, equipment failure and shutdown also occur from time to time. Another problem is that the time required for each assembly process is inconsistent, and sometimes there is a phenomenon of different busy and idle times between each process, which also causes certain waste. Utility Model Content

[0006] The utility model aims to solve the technical problem of providing an assembly device for a character wheel bin, a character wheel and a wheel axle of a water meter measuring display, which saves labor and improves efficiency compared with manual assembly, has low cost and low failure rate compared with large equipment.

[0007] The technical solution of the utility model is to provide an assembly device for a character wheel bin, a character wheel and a wheel axle of a water meter display, including a vertical support seat, two first vertical slide bars on the vertical support seat, two first vertical sliding sleeves slidably matched on the first vertical slide bars, a pressure plate used for simultaneously pressing multiple wheel axles is fixed on the two first vertical sliding sleeves, a compression spring is movably sleeved on each vertical first slide bar, one end of the compression spring is against the pressure plate, and the other end of the compression spring is against the bottom of the vertical support seat;

[0008] The assembly device of the character wheel bin, character wheel and wheel axle of the water meter display also includes a second vertical sliding sleeve fixed to the upper part of the vertical support seat, a second vertical sliding rod is slidably matched in the second vertical sliding sleeve, the top of the second vertical sliding rod is hinged to the bottom of the lifting or lowering component of a lever-type pull assembly, and the bottom of the second vertical sliding rod is fixed to the pressing plate;

[0009] The assembly device of the character wheel bin, character wheel and wheel axle of the water meter measuring display also includes a structure fixed at the lower part of the vertical support seat and used for detachably fixing with a plurality of parallel character wheel bin shells.

[0010] After adopting the above structure, the assembly device of the character wheel bin, character wheel and wheel axle of the water meter measuring display of the utility model has the following advantages:

[0011] It overcomes the shortcomings of manual assembly, which is labor-intensive, slow and inefficient. Compared with large-scale automated assembly equipment, it has low cost, low equipment failure rate, relatively low precision requirements, and will not cause equipment to be idle and wasted.

[0012] The front-end processes of the assembly process of the utility model, such as the housing of the detachable fixed water meter character wheel bin, the placement of multiple character wheels, the clamping cover body and the insertion of about half of the wheel axle, are all relatively labor-saving, that is, effortless, and the operation is convenient and quick. The main labor-intensive process of pressing the wheel axle to a predetermined position is implemented by a lever assembly with a lever labor-saving principle. The wheel axle pressing process is also labor-saving, and the operation is convenient and quick, and multiple wheel axles can be pressed at one time. The assembly efficiency of the character wheel bin housing, the character wheels, the character wheel bin cover body and the wheel axle is relatively high, the assembly quality can be guaranteed, and the equipment cost is relatively low.

[0013] The compression spring buffers and de-vibrates, protecting the character wheel compartment housing and the character wheel compartment cover body, such as a plastic character wheel compartment housing and a character wheel compartment cover body, from being crushed by the pressure plate.

[0014] Furthermore, the vertical support seat includes a vertical mounting plate, and a pair of first vertical slide bar fixing plates are fixed at the upper and lower ends and at right angles to the vertical mounting plate on both sides of the vertical mounting plate. After adopting the above structure, the vertical support seat has a simple structure, is stable and reliable, and has good mechanical properties.

[0015] Furthermore, each of the two ends of the pressing plate has a sliding rod through hole that is slidably matched with the first vertical sliding rod, the first vertical sliding sleeve is fixed to the top of the pressing plate, and a clamping plate is fixed to the bottom surface of each end of the pressing plate, and each clamping plate also has a sliding rod through hole that is slidably matched with the first vertical sliding rod, and the top of the compression spring is pressed to the bottom surface of the clamping plate. After adopting the above structure, the structure of the pressing plate is simple, and it is flexible, stable and reliable when pressing down multiple axles at the same time, and it is easy to operate.

[0016] Furthermore, the lever-type pull assembly includes a vertical fixed seat fixed in the middle of the width of the top of the vertical mounting plate of the vertical support seat; the lifting or lowering component is a movable frame that accommodates the hinged seat at the top of the vertical fixed seat; the hinged seat at the top of the vertical fixed seat is hinged to one end of a short diagonal rod of a pull rod through a hinge shaft, the other end of the short diagonal rod of the pull rod is hinged to the top of the movable frame, the bottom end of the movable frame is hinged to the top of the second vertical sliding rod, and in the non-pressed state, the long straight rod of the pull rod extends upward and toward the side close to the vertical mounting plate. After adopting the above structure, the design of the pull rod assembly is reasonable, with a better labor-saving structure of the lever principle, and the lifting or lowering component, i.e., the movable frame, does not interfere with the hinged seat at the top of the vertical fixed seat during operation, further ensuring the technical effects of labor-saving in the process of pressing the wheel shaft, convenient and quick operation, and the ability to press multiple wheel shafts at one time, and high assembly efficiency of the wheel shaft.

[0017] Furthermore, a plurality of character wheel bin housing clamping plates are fixed to the lower part of the vertical mounting plate of the vertical support seat, and a plurality of clamping blocks are provided on the clamping plates to cooperate with the clamping holes on the inner wall of the character wheel bin housing and clamp the respective character wheel bin housings, and a plurality of limiting grooves are provided on the clamping plates to accommodate the part of the character wheel bin cover body after the cover is closed and to limit the character wheel bin cover body up, down, left and right, and the clamping blocks are fixed on the groove walls. After adopting the above structure, the detachable connection structure between the character wheel bin housing and the vertical support plate is simple, and the operation is convenient and fast, which further ensures the technical effect of labor-saving, convenient and fast assembly of the character wheel bin housing, the character wheel, the character wheel bin cover body and the wheel axle.

[0018] Furthermore, the clamping plate of the character wheel compartment housing also has a bottom support plate that makes the bottom surface of the plurality of character wheels flush with the bottom surface of the character wheel compartment housing, and the clamping plate of the character wheel compartment housing also has a top pressure plate that makes the top surface of the plurality of character wheels flush with the top surface of the character wheel compartment housing. With the above structure, the process of assembling the character wheel into the semicircular groove of the character wheel compartment housing is simpler, more convenient, faster and more accurate, further ensuring the technical effect of labor-saving, convenient, fast and quality-guaranteed assembly of the character wheel compartment housing, the character wheel, the character wheel compartment cover and the wheel shaft.

[0019] Furthermore, a gap is left between the pressing plate and the vertical mounting plate, and the width of the gap is greater than the thickness of the clamping plate of the wheel housing. With the above structure, the pressing plate can be prevented from interfering with the clamping plate when pressing down multiple axles, making the pressing plate more flexible, stable and reliable when pressing down multiple axles at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model assembly device when it is not pressed down ( Figure 1-Figure 3 The hinge shaft and screws or bolts and nuts etc. are not shown).

[0021] Figure 2 yes Figure 1Schematic diagram of the explosion structure in which a straight line wheel, a wheel shaft and a straight line wheel compartment cover are exploded, and a circular step buckle column is exploded separately.

[0022] Figure 3 It is a structural schematic diagram of the utility model when the assembly device is in the process of pressing the wheel axle downward (the wheel axle has not yet been pressed down to the predetermined position).

[0023] As shown in the figure:

[0024] 1. metering display, 11. character wheel housing, 111. semicircular groove, 12. character wheel housing cover, 121. axial convex ring, 1211. convex ring center hole, 13. character wheel, 131. character wheel center hole, 14. wheel shaft, 141. spline section, 142. round polished rod, 143. trimming section;

[0025] 2. vertical support seat, 21. vertical mounting plate, 22. first vertical slide bar fixing plate, 221. upper left first vertical slide bar fixing plate, 222. lower left first vertical slide bar fixing plate, 223. upper right first vertical slide bar fixing plate, 224. lower right first vertical slide bar fixing plate, 225. slide bar mounting hole;

[0026] 3. Pressing plate assembly, 31. First vertical sliding rod, 32. First vertical sliding sleeve, 33. Pressing plate, 34. Compression spring, 35. Clamping plate;

[0027] 4. Lever-type pull assembly, 41. Second vertical sliding sleeve, 42. Second vertical sliding rod, 421. Ear plate, 43. Vertical fixing seat, 431. Articulated seat, 4311. Fifth bolt through hole, 44. Connecting plate, 45. Movable frame, 451. Upper connecting straight plate, 4511. First bolt through hole, 452. Lower connecting straight plate, 4521. Third bolt through hole, 46. Pull rod, 461. Short oblique rod, 462. Long straight rod, 47. Rubber sleeve;

[0028] 5. The character wheel housing housing clamping assembly, 51. The clamping plate, 511. The limiting groove, 52. The circular step clamping column, 53. The bottom supporting plate, 54. The top pressure plate. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these specific implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each specific implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figure 1 , Figure 2 and Figure 3 shown.

[0031] The metering display 1 of the water meter head of the prior art is a component on the water meter for displaying the amount of water used. It includes a character wheel bin formed by a closed shell and a cover body. There are multiple character wheels 13 arranged in a row in the character wheel bin shell 11 and the character wheel bin cover body 12. A wheel axle 14 passes through the central hole 131 of all the character wheels 13 to string the character wheels. There is an axial convex ring 121 at each end of the character wheel bin cover body 12. There is a spline section 141 on the upper part of the wheel axle 14, and both below and above the spline section 141 are round polished rods 142, and the top of the top round polished rod 142 is a cutting edge section 143. There is a semicircular groove 111 on the character wheel bin shell 11 to accommodate half of the character wheel 13, that is, half of the character wheel 13 in the horizontal direction, and there is also a semicircular groove on the character wheel bin cover body 12 to accommodate half of the character wheel 13. The character wheel bin cover body 12 is also called the character wheel bin shell cover. The water meter metering display 1 or the metering display 1 of the water meter head is referred to as a counter in the industry.

[0032] The inventive points of the utility model are as follows.

[0033] The assembly device of the character wheel bin, character wheel and wheel axle of the water metering display of the utility model comprises a vertical support seat 2, two first vertical slide bars 31 are arranged on the vertical support seat 2, two first vertical sliding sleeves 32 are slidably matched on the first vertical slide bars 31, a pressing plate 33 for simultaneously pressing multiple axles 14, such as four axles 14, is fixed on the two first vertical sliding sleeves 32, a compression spring 34 is movably sleeved on each vertical first slide bar 31, one end of the compression spring 34 abuts against the compression plate 33, and the other end of the compression spring 34 abuts against the bottom of the vertical support seat 2. For the convenience of description, except for the vertical support seat 2, the remaining parts in this section are collectively referred to as the pressure plate assembly 3.

[0034] The assembly device of the character wheel bin, character wheel and wheel axle of the water metering display of the utility model also includes a second vertical sliding sleeve 41 fixed to the upper part of the vertical support seat 2, and a second vertical sliding rod 42 is slidably matched in the second vertical sliding sleeve 41. The top of the second vertical sliding rod 42 is hinged to the bottom of the lifting or lowering component of a lever-type pull assembly 4, and the bottom of the second vertical sliding rod 42 is fixed to the pressure plate 33 such as welding.

[0035] The assembly device of the character wheel bin, character wheel and wheel axle of the water meter measuring display of the utility model also includes a structure fixed at the lower part of the vertical support seat 2 and used for detachably fixing with a plurality of character wheel bin shells 11 arranged side by side.

[0036] The vertical support seat 2 includes a vertical mounting plate 21, and a pair of first vertical slide bar fixing plates 22 are fixed at the upper and lower ends and at right angles to the vertical mounting plate 21 on both sides of the vertical mounting plate 21. Figure 1 , Figure 2 and Figure 3As shown, the left upper end of the vertical mounting plate 21 has an upper left first vertical slide bar fixing plate 221, the left lower end of the vertical mounting plate 21 has a lower left first vertical slide bar fixing plate 222, the right upper end of the vertical mounting plate 21 has an upper right first vertical slide bar fixing plate 223, and the right lower end of the vertical mounting plate 21 has a lower right first vertical slide bar fixing plate 224. The first vertical slide bar fixing plate 22 and the vertical mounting plate can be fixed by welding or directly bending. The first vertical slide bar mounting plate 22 can have a slide bar mounting hole 225, and the first vertical slide bar 31 can be fixed in the slide bar mounting hole 225 of the slide bar mounting plate 22 by interference fit or spot welding, so that the two first vertical slide bars 31, i.e., the first vertical slide bar 31 on the left and the first vertical slide bar 31 on the right, can have better verticality and can be parallel to the vertical mounting plate 21.

[0037] The two ends of the pressure plate 33 each have a slide rod through hole that slides in conjunction with the first vertical slide rod 31, the first vertical sliding sleeve 32 is fixed to the top of the pressure plate 33 by welding, and the bottom surfaces of the two ends of the pressure plate 33 are each fixed by a clamping plate 35 that is screwed together by screws, and each clamping plate 35 also has a slide rod through hole that slides in conjunction with the first vertical slide rod 31, and the top end of the compression spring 34 is pressed against the bottom surface of the clamping plate 35.

[0038] The lever-type pull assembly 4 includes the second vertical sliding sleeve 41 and the second vertical sliding rod 42. The lever-type pull assembly 4 also includes a vertical fixing seat 43 fixed to the middle of the width of the top of the vertical mounting plate 21 of the vertical support seat 2. The vertical fixing seat 43 can be fixed on a connecting plate 44 such as by welding, and the connecting plate 44 can be screwed on the vertical mounting plate 21 via a plurality of screws. The lifting or lowering component can be a movable frame 45 for accommodating a hinge seat 431 at the top of the vertical fixing seat 43. The hinge seat 431 at the top of the vertical fixing seat 43 is hinged to one end of a short diagonal rod 461 of a pull rod 46 via a hinge shaft. It is not difficult to understand that a pair of fifth bolt through holes 4311 can be provided on the hinge seat 431, and the end of the short diagonal rod 461 also has a bolt through hole. A bolt passes through three bolt through holes and is screwed on the nut at the other end of the bolt to limit the axial position to form a hinge. The other end of the short oblique rod 461 of the pull rod 46 is hinged to the top of the movable frame 45, and the bottom end of the movable frame 45 is hinged to the top of the second vertical sliding rod 42. Figure 1 , Figure 2 and Figure 3 The movable frame 45 shown is composed of two symmetrical plates or outer convex plates. The upper and lower parts of each plate are connected straight plates. The middle part of the height is the left convex plate and the right convex plate that constitute the movable frame 45. The two upper connected straight plates 451 have first bolt holes 4511. The short inclined rod 461 of the lever 46, also called the short inclined plate, and the long straight rod 462, also called the long inclined plate, have second bolt holes at the connection. A bolt passes through the two first bolt holes 4511 and a second bolt hole, and is screwed on the nut at the other end of the bolt to limit the axial direction to form a hinge. Figure 1 , Figure 2 and Figure 3 The second vertical slide bar 42 shown in the figure has an ear plate 421 fixedly welded to the top, two lower connecting straight plates 452 have third bolt holes 4521, and the ear plate 421 has a fourth bolt hole. A bolt passes through the two third bolt holes 4521 and a fourth bolt hole, and is screwed on the nut at the other end of the bolt to limit the axial direction to form a hinge. Figure 1 and Figure 2 As shown, when the lever is not pressed down, the long straight rod 462 of the lever 46 extends upward and toward the side close to the vertical mounting plate 21. The long straight rod 462 of the lever 46 may be covered with a rubber sleeve 47 for easy handholding and force application. Figure 1 and Figure 2 As shown, when the lever 46 is not pressed down, the movable frame 45 is just sleeved on the hinge seat 431 at the top of the vertical fixed seat 43, and the two do not interfere with each other. Figure 3 As shown, during the process of the lever 46 pressing downward, the movable frame 45 is firstly carried by the short oblique rod 461 to the outside away from the vertical mounting plate 21, and then pressed downward, and the movable frame 45 and the hinge seat 431 do not interfere with each other, and the process of the lever 46 pressing downward is labor-saving, convenient and fast. The hinge seat 431 is also called the hinge seat.

[0039] The lower part of the vertical mounting plate 21 of the vertical support seat 2 is fixed with a plurality of clamping plates 51 of the character wheel housing 11 by using a plurality of screws. The clamping plates 51 have a plurality of clamping blocks that cooperate with the clamping holes on the inner wall of the character wheel housing 11 and clamp the respective character wheel housing 11. The clamping blocks can be used as Figure 2The circular step buckle column 52 shown in the figure is connected with the buckle hole on the inner wall of the character wheel compartment housing 11, i.e., the plate near the vertical mounting plate 21, such as a blind hole plug-in buckle. After the character wheel 13 and the wheel shaft 14 are assembled, the character wheel compartment cover 12 can be taken out together with the character wheel compartment housing 11 by hand with a little force. The clamping plate 51 also has a plurality of limiting grooves 511 for accommodating the part of the character wheel compartment cover 12 after the cover is closed and limiting the position of the character wheel compartment cover 12 up and down and left and right. The buckle block, such as the circular step buckle column 52, is fixed, such as welded, on the wall of the groove 511 of the clamping plate 51. It is not difficult to understand that the character wheel compartment housing 11 and the character wheel compartment cover 12 have a mutually snap-fitting structure. First, the character wheel compartment housing 12 is snap-fitted onto the vertical mounting plate 21, and then the character wheel 13 is placed into the semicircular groove 111 of the character wheel compartment housing 11, and then the character wheel compartment cover 12 is pushed inward laterally, and the character wheel compartment housing 11 and the character wheel compartment cover 12 are firmly snap-fitted to each other. This is the prior art. As for the limiting groove 511 for limiting the position of the character wheel compartment cover body 12 in the upper, lower, left and right directions, it can be understood as follows: after the character wheel compartment housing body 11 is locked with the locking block such as the circular step locking column 52, the inner plate is located in the limiting groove 511, and a position for accommodating the character wheel compartment cover body 12 is reserved around it. After the character wheel compartment cover body 12 is pushed inward laterally until it is locked with the character wheel compartment housing body 11, the inner plate of the character wheel compartment housing body 11 and part of the inner side of the character wheel compartment cover body 12 are both accommodated in the limiting groove 511, so that the character wheel compartment housing body 11 and the character wheel compartment cover body 12 are both limited in the upper, lower, left and right directions, so that the wheel axle 14 can be pressed in more smoothly.

[0040] The clamping plate 51 of the character wheel compartment housing is also fixed with a bottom support plate 53, which is screwed by screws to make the bottom surface of the plurality of character wheels 13, i.e., the bottom surface of the bottom character wheel 13, flush with the bottom surface of the character wheel compartment housing 11. The clamping plate 51 of the character wheel compartment housing 11 is also fixed with a top pressure plate 54, which is screwed by screws to make the top surface of the plurality of character wheels 13, i.e., the top surface of the top character wheel 13, flush with the top surface of the character wheel compartment housing 13. It is not difficult to understand that the bottom support plate 53 and the top pressure plate 54 do not interfere with the mutual clamping of the character wheel compartment housing 11 and the character wheel compartment cover 12, i.e., they are just located in the gap between the two. For the convenience of description, the parts for clamping the character wheel compartment housing 11 involved in the above two sections can be collectively referred to as the character wheel compartment housing clamping assembly 5.

[0041] A gap may be left between the pressing plate 33 and the vertical mounting plate 21 , and the width of the gap may be greater than the thickness of the clamping plate 51 of the character wheel housing 11 .

[0042] When assembling, first put multiple Figure 1 , Figure 2 and Figure 3The character wheel bin housings 11 of the four water meters shown in the figure are connected to the lower part of the vertical mounting plate 21 of the vertical support seat 2 through the circular step buckle column 52 and the card hole. The top surface of the bottom support plate 53 on the groove wall is flush with the bottom surface of the character wheel bin housing 11 and extends out of the semicircular groove 111. The bottom surface of the top pressure plate 54 on the groove wall is flush with the top surface of the character wheel bin housing 11 and extends out of the semicircular groove 111. Then, multiple character wheels 13 are placed on the bottom support plate 53 one by one and pressed against each other until the top surface of the character wheel 13 at the top is flush with the bottom surface of the top pressure plate 54. Then, the character wheel bin cover body 12 is pushed inward laterally and engaged with the character wheel bin housing body 11. At this time, the semicircular grooves on the character wheel bin cover body 12 are pressed against the outer sides of the multiple character wheels 13. The character wheel bin housing 11 and the character wheel bin cover body 12 are both limited up, down, left, and right. Then, the respective wheel axles 14 are moved from the axial direction of the character wheel bin cover body 12 to the axial direction of the character wheel bin cover body 12. The convex ring center hole 1211 of the convex ring 121 is inserted downward into the character wheel center holes 131 of the multiple character wheels 13, and generally half of it can be inserted effortlessly. Then the long straight rod 462 of the lever 46 is pulled down to press the long straight rod 462 of the lever 46 downward and toward the side away from the vertical mounting plate 21, so that the spring force of the compression spring (playing a buffering and shock absorbing role) can be overcome to press the respective wheel axles 14 to the predetermined depth positions of the multiple character wheels 14 in the character wheel compartment housing 11 and the character wheel compartment cover 12, such as the bottom of the trimming section 143 at the top of the wheel axle 14 is flush with the top surface of the character wheel compartment cover 12, and the bottom end of the wheel axle enters the shaft hole at the other end of the character wheel compartment cover 12, and then the lever 46 is held by hand to return the lever 46 to its original position and release the lever 46, and then the character wheel compartment cover 12 is held by hand to bring the assembled character wheels 13 and the wheel axle 14 out of the character wheel compartment cover 12 together with the character wheel compartment housing 11.

[0043] The above unmarked parts, structures or quantities are not shown in the drawings, and some parts are not marked in the drawings. The drawings are only for reference. If there is any inconsistency between the drawings and the text description or between the drawings, the text description shall prevail.

[0044] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An assembly device for a character wheel bin, a character wheel and a wheel axle of a water meter display, characterized in that: The vertical support seat comprises two first vertical slide bars, the first vertical slide bars are slidably matched with two first vertical slide sleeves, a pressure plate for simultaneously pressing multiple wheel axles is fixed on the two first vertical slide sleeves, a compression spring is movably sleeved on each vertical first slide bar, one end of the compression spring abuts against the pressure plate, and the other end of the compression spring abuts against the bottom of the vertical support seat; It also includes a second vertical sliding sleeve fixed to the upper part of the vertical support seat, a second vertical sliding rod is slidably matched in the second vertical sliding sleeve, the top of the second vertical sliding rod is hinged to the bottom of the lifting or lowering component of a lever-type pull assembly, and the bottom of the second vertical sliding rod is fixed to the pressing plate; It also includes a structure which is fixed at the lower part of the vertical support seat and is used for detachably fixing with a plurality of parallel character wheel bin shells.

2. The assembly device of the character wheel chamber, the character wheel and the wheel axle of the water meter display according to claim 1, characterized in that: The vertical support seat comprises a vertical mounting plate, and a pair of first vertical slide bar fixing plates are respectively arranged on both sides of the vertical mounting plate and are fixed at the upper and lower ends and are at right angles to the vertical mounting plate.

3. The assembly device of the character wheel chamber, the character wheel and the wheel axle of the water meter display according to claim 1, characterized in that: Each of the two ends of the pressure plate has a slide rod through hole that slides in conjunction with the first vertical slide rod. The first vertical sliding sleeve is fixed to the top of the pressure plate. A clamping plate is fixed to the bottom surface of each of the two ends of the pressure plate. Each clamping plate also has a slide rod through hole that slides in conjunction with the first vertical slide rod. The top end of the compression spring is pressed against the bottom surface of the clamping plate.

4. The assembly device of the character wheel chamber, the character wheel and the wheel axle of the water meter measuring display according to claim 1, characterized in that: The lever-type pulling assembly includes a vertical fixing seat fixed in the middle of the width of the top of the vertical mounting plate of the vertical support seat; the lifting or lowering component is a movable frame that accommodates the hinge seat at the top of the vertical fixing seat; the hinge seat at the top of the vertical fixing seat is hinged to one end of a short oblique rod of a pull rod via a hinge shaft, the other end of the short oblique rod of the pull rod is hinged to the top of the movable frame, and the bottom end of the movable frame is hinged to the top of the second vertical sliding rod. When not pressed down, the long straight rod of the pull rod extends upward and toward the side close to the vertical mounting plate.

5. The assembly device of the character wheel chamber, the character wheel and the wheel axle of the water meter display according to claim 2, characterized in that: A plurality of character wheel bin shell clamping plates are fixed to the lower part of the vertical mounting plate of the vertical support seat, and a plurality of clamping blocks are provided on the clamping plate to cooperate with the clamping holes on the inner wall of the character wheel bin shell and clamp the respective character wheel bin shells, and a plurality of limiting grooves are also provided on the clamping plate to accommodate the part of the character wheel bin cover body after the cover is closed and to limit the character wheel bin cover body up, down, left and right, and the clamping blocks are fixed on the groove walls.

6. The assembly device for the character wheel chamber, the character wheel and the wheel axle of the water meter display according to claim 5, characterized in that: The character wheel storehouse housing clamping plate also has a bottom support plate that makes the bottom surfaces of the multiple character wheels flush with the bottom surface of the character wheel storehouse housing, and the character wheel storehouse housing clamping plate also has a top pressure plate that makes the top surfaces of the multiple character wheels flush with the top surface of the character wheel storehouse housing.

7. The assembly device of the character wheel chamber, the character wheel and the wheel axle of the water meter measuring display according to claim 5, characterized in that: A gap is left between the pressing plate and the vertical mounting plate, and the width of the gap is greater than the thickness of the clamping plate of the character wheel chamber housing.

Images