A wet installation screwing machine for water meter

Abstract

The application discloses a water meter wet installation screwing machine, and relates to the related field of water meter assembly, which comprises a rack body, a screwing mechanism installed on the upper portion of the rack body and a meter body clamping and water injecting mechanism installed on the rack body; the rack body is formed by stainless steel welding; the output end of a speed reducer is connected with a screwing chuck through a spline shaft and a spline set; a cylinder only drives the screwing chuck to ascend and descend; a servo motor and the speed reducer do not need to follow up; the meter body clamping and water injecting mechanism comprises water inlet side clamping cylinders and water outlet side clamping cylinders symmetrically arranged on the two sides of a meter body clamping seat body; the output ends of the two cylinders are connected with water inlet joints and water outlet joints respectively. The water meter wet installation screwing machine has the integrated operation layout of left soaking, middle wet installation and right spare part, reduces the back-and-forth action of an operator, reduces labor intensity, and improves production efficiency; through reasonable screwing mechanism and power distribution, the screwing chuck is separately moved up and down, the screwing precision and operation stability are improved; through the design of the double-side synchronous clamping and water injecting structure and the stainless steel rack body, the production efficiency and the finished product qualification rate of the water meter wet installation are improved.

Description

Technical Field

[0001] This invention relates to the technical field of water meter assembly, specifically a wet-assembly tightening machine for water meters. Background Technology

[0002] In the water meter production and assembly process, wet assembly is a key process to ensure the water meter's sealing performance and metering accuracy. Its core requirement is to precisely tighten all components of the water meter while the meter body is filled with water to avoid problems such as water leakage and inaccurate metering during subsequent use.

[0003] To overcome the above problems, three existing patents can be referenced: Application No. CN202323038424.0 discloses a wet water meter tightening machine, suitable for tightening horizontal and vertical water meter covers, with optimized clamping and positioning structures, resulting in high overall efficiency and a simple, easy-to-implement structure; Application No. CN202121693608.9 discloses a wet water meter tightening device, which, through vacuum extraction and water injection pipeline design, can automatically complete vacuuming and water injection after the cover is tightened, reducing labor intensity and improving work efficiency; Application No. CN202322045209.7 discloses a wet water meter cover assembly equipment, which rationally arranges the screwing sleeves to shorten the cantilever distance, reduce screwing wobbling, and improve tightening stability; at the same time, a pressure plate is added to press the meter shell to prevent it from bouncing and shifting under force, ensuring smooth coaxial rotation and further improving the cover tightening effect.

[0004] Although the above-mentioned device is convenient for processing and use, it still has some shortcomings in use, as follows: Unreasonable work layout: The existing equipment does not form a standardized work process layout. The water meter core is soaked, wet-installed, and the parts are placed in a scattered manner, which takes up a large area and has high transportation costs. Operators need to frequently go back and forth to pick up and put down materials and workpieces, which is labor-intensive and prone to operational chaos, affecting production efficiency. The tightening mechanism is cumbersome: Most existing tightening equipment adopts a structure in which the motor reducer and the tightening chuck move up and down synchronously. This structure is not only complex and costly to manufacture, but also prone to jamming and deviation during the movement, which affects the tightening accuracy and increases the equipment maintenance cost. Meter clamping and water filling mechanism: It is not possible to quickly switch water meter models, the operation is cumbersome, and problems such as poor sealing and leakage are prone to occur when filling water, which affects the wet installation effect; Poor equipment durability: Some equipment frames are made of ordinary steel, which is prone to rust and deformation. They are not well adapted to the humid environment in the water meter production process, have a short service life, and further increase production costs.

[0005] Therefore, we propose a wet-installation tightening machine for water meters to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a wet-installation tightening machine for water meters to solve the problems currently found in the market as described in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a water meter wet installation and tightening machine, comprising a frame body, a tightening mechanism installed on the upper part of the frame body, and a meter body clamping and water injection mechanism installed on the frame body. The frame body is welded from stainless steel, and three working areas (left, middle, and right) are sequentially arranged along the work flow. The left working area is equipped with a left water tank with a built-in hollow material basket for soaking and transferring water meter components. The middle working area is a central worktable with a meter body clamping seat, where the meter body clamping and water injection mechanism is located to complete the clamping, water injection, and wet installation and tightening operations of the water meter body. The right working area is for placing water meter assembly parts. The right side of the workbench has a tool rack at the corresponding position on the frame, forming an integrated operation layout of left soaking, middle wet loading, and right loose parts; the servo motor and reducer of the tightening mechanism are fixed to the upper part of the frame, and the output end of the reducer is connected to the tightening chuck via a spline shaft and spline kit. The cylinder drives the tightening chuck to rise and fall independently. The position of the servo motor and reducer is fixed in the tightening state, and the position of the servo motor and reducer does not need to move up and down; the meter body clamping water injection mechanism includes a water inlet clamping cylinder and a water outlet clamping cylinder symmetrically arranged on both sides of the meter body clamping base. The output ends of the two cylinders are connected to the water inlet connector and the water outlet connector respectively via flow channels.

[0008] Preferably, the tightening mechanism includes an upper frame fixed to the top of the frame body, with a fixed base plate fixed to the surface of the upper frame; a reducer mounting plate is fixed to the upper end of the fixed base plate, the reducer is fixed inside the reducer mounting plate, the output end of the servo motor is connected to the input end of the reducer, and the output end of the reducer is coaxially fixed to the spline shaft through a coupling; the spline shaft is rotatably disposed inside the upper bearing mounting seat, and the upper bearing mounting seat is fixed to the surface of the fixed base plate; the spline assembly is coaxially fitted outside the spline shaft and circumferentially limited to it, and the tightening chuck is connected to the lower end of the spline assembly through a tightening chuck adapter; the cylinder is fixed to the fixed base plate, and its output end is connected to the tightening chuck adapter.

[0009] Preferably, the output end of the cylinder component is fixedly connected to a cylinder slider, and the cylinder slider is connected to a lower bearing mounting plate through a slider connecting plate. The lower bearing mounting plate rotates with the tightening chuck adapter through a bearing to drive the tightening chuck to complete the lifting action. The lower bearing mounting plate is fixedly connected to the spline kit through a spline sleeve locking nut.

[0010] Preferably, the tightening mechanism is also equipped with a buffer spring and a linear bearing. The buffer spring is used to buffer the impact on the water meter body during the descent of the tightening chuck, and the linear bearing is used to guide the lifting and lowering movement of the tightening chuck in the buffered state.

[0011] Preferably, the end of the tightening clamp is provided with tightening teeth for engaging with the water meter component to be tightened, and the middle of the tightening clamp is provided with an installation hole for cooperating with the tightening clamp adapter; the tightening clamp and the tightening clamp adapter are detachably fixed by a rotating clamp locking pin and a cotter pin.

[0012] Preferably, the meter body clamping water injection mechanism further includes a cylinder fixing frame, an inlet channel, and an outlet channel; the cylinder fixing frame is fixed on the intermediate worktable, and the inlet-side clamping cylinder and the outlet-side clamping cylinder are symmetrically fixed on the cylinder fixing frame; the output end of the inlet-side clamping cylinder is connected to the inlet connector through the inlet channel, and the output end of the outlet-side clamping cylinder is connected to the outlet connector through the outlet channel.

[0013] Preferably, the end of the water inlet connector is provided with a water inlet side sealing gasket, and the end of the water outlet connector is provided with a water outlet side sealing gasket, so as to adapt to the position deflection of the water meter body through a flexible clamping method, and realize the water meter body clamping and water injection operation simultaneously.

[0014] Preferably, the watch body clamping base is detachably installed on the watch body clamping base via the watch body clamping base fixing component. The watch body clamping base is fixed inside the intermediate worktable, and the watch body clamping base is equipped with a guide sleeve for quick replacement.

[0015] Preferably, the left water tank is equipped with a Y-type filter, a manual ball valve, and a faucet, which are used for filtering impurities in the soaking water, controlling the water flow, and replenishing water, respectively.

[0016] Preferably, the frame is also equipped with an electrical control box and a bracket locking knob. The electrical control box is used to control the coordinated operation of various mechanisms of the equipment, and the bracket locking knob is used to lock and fix the position of the bracket.

[0017] Compared with existing technologies, the beneficial effects of this invention are as follows: This water meter wet assembly and tightening machine, through its integrated operation layout of left soaking, middle wet assembly, and right loose parts, integrates the entire process of water meter component soaking and transfer, meter body wet assembly and tightening, and assembly of loose parts temporary storage. This eliminates the ineffective actions of operators repeatedly picking up and placing materials, significantly reducing labor intensity and material transfer costs, while also reducing the equipment's footprint, standardizing the operation process, and avoiding operational chaos. The dynamic-static separation tightening structure, with a fixed servo motor and reducer and a cylinder independently driving the tightening clamp's lifting and lowering, simplifies the transmission structure, avoids the problem of jamming and offset of the power component during lifting and lowering, and improves tightening accuracy and equipment operational stability. Simultaneously, the double-sided synchronous clamping and water injection structure and stainless steel frame design solve the problem of water leakage due to poor sealing during the wet assembly process, adapting to humid operating environments, extending equipment lifespan, and comprehensively improving the production efficiency and finished product qualification rate of water meter wet assembly. Specific details are as follows: 1. The design adopts a static-dynamic separation approach, using a servo motor with a reducer for fixed installation and a cylinder to drive the lifting and lowering of the tightening chuck. This avoids structural redundancy, operational jamming, and misalignment issues caused by the dynamic lifting and lowering of the power component, significantly simplifying the equipment structure and reducing manufacturing costs and maintenance difficulty. At the same time, the circumferential limit transmission of the spline shaft and spline sleeve, combined with the guide and buffer structure of the buffer spring and linear bearing, ensures stable and accurate transmission of tightening torque and eliminates rigid impact and operational sway during the lowering of the tightening chuck. This further improves the coaxiality and accuracy of the tightening operation, and stably ensures the sealing performance and metering accuracy of the water meter assembly.

[0018] 2. The streamlined layout of left-side soaking, middle-side wet assembly, and right-side component assembly integrates the entire process of soaking water meter components, wet assembly tightening, and temporary storage of components. This standardizes the work process, significantly reduces unnecessary transfer actions, and improves single-shift production efficiency. The symmetrical clamping and water injection integrated structure on both sides, through the flexible self-adaptive clamping of the end sealing gaskets, enables the meter body clamping and water injection to be completed simultaneously, eliminating water leakage problems during the wet assembly process. The quick-change meter body clamping base and matching guide sleeve can quickly adapt to the assembly requirements of different water meter models. The stainless steel welded frame body is suitable for the humid working environment of water meter production, avoids rust and deformation, and effectively extends the service life of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the tightening mechanism of the present invention; Figure 4 This is a schematic diagram of the main structure of the fixed base plate of the present invention; Figure 5 This is a schematic diagram of the main structure of the cylinder component of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the main structure of the tightening clamp head of the present invention; Figure 8 This is a top view of the intermediate worktable structure of the present invention; Figure 9 This is a schematic diagram of the structure of the present invention viewed from below.

[0020] In the diagram: 1. Tightening mechanism; 101. Servo motor; 102. Reducer; 103. Reducer mounting plate; 104. Coupling; 105. Upper bearing mounting seat; 106. Spline assembly; 107. Tightening chuck adapter; 108. Tightening chuck; 1081. Tightening gear; 1082. Mounting hole; 109. Cylinder slider; 110. Cylinder component; 112. Spline shaft; 113. Fixed base plate; 114. Spline sleeve lock nut; 115. Rotary chuck lock pin and cotter pin; 116. Lower bearing mounting plate; 117. Linear bearing; 118. Slider connecting plate; 119. Buffer spring; 2. Hanger; 3. Hanger locking. 4. Knob; 5. Right side workbench; 6. Frame body; 7. Upper frame; 8. Meter body clamping water injection mechanism; 9. Outlet side clamping cylinder; 10. Outlet connector; 11. Outlet flow channel; 12. Outlet side sealing gasket; 13. Guide sleeve; 14. Inlet side sealing gasket; 15. Inlet connector; 16. Inlet flow channel; 17. Inlet side clamping cylinder; 18. Cylinder fixing bracket; 19. Middle workbench; 20. Meter body clamping base; 21. Meter body clamping base; 32. Meter body clamping base fixing piece; 43. Y-type filter; 54. Manual ball valve; 55. Left water tank; 66. Hollowed-out material basket; 77. Faucet; 88. Electrical control box; 99. Water meter body. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention discloses a wet-installation tightening machine for water meters, such as... Figures 1 to 9As shown, the device includes a frame body 5, a tightening mechanism 1 installed on the upper part of the frame body 5, and a meter body clamping and water injection mechanism 6 installed on the frame body 5. The frame body 5 is made of stainless steel welded in one piece, which is suitable for the humid working environment in the water meter production process and avoids rusting and deformation problems after long-term use. The frame body 5 is arranged with a left working area, a middle working area and a right working area in sequence along the water meter wet assembly process, forming an integrated operation layout of left soaking, middle wet assembly and right loose parts. The left working area is equipped with a left water tank 11, and a hollow material basket 12 is placed in the left water tank 11. The hollow material basket 12 has water permeable holes evenly opened in the basket body for soaking and batch transfer of water meter core components waiting to be assembled. A Y-type filter 9 and a manual ball valve 10 are installed on the inlet and outlet water pipes of the left water tank 11. The side wall of the water tank 11 is equipped with a faucet 13, which is used for filtering impurities in the soaking water, controlling the water flow, and replenishing the water tank. The middle working area is the middle workbench 7. The table surface of the middle workbench 7 is provided with a meter body clamping seat 8 directly below the tightening mechanism 1. The meter body clamping and water injection mechanism 6 is installed on the middle workbench 7 and arranged around the meter body clamping seat 8. It is used to complete the clamping, water injection, and wet installation tightening of the water meter body 15. The right working area is the right workbench 4. The table surface of the right workbench 4 is used to place the water meter assembly parts. The frame body 5 is also provided with a hanging bracket 2 for hanging assembly tools on the side of the right workbench 4. The frame body 5 is provided with a hanging bracket locking knob 3 corresponding to the installation position of the hanging bracket 2 for locking and fixing the installation position of the hanging bracket 2.

[0023] The tightening mechanism 1 includes an upper frame 51 fixed to the top of the frame body 5. A fixed base plate 113 is bolted to the horizontal platform surface of the upper frame 51. A reducer mounting plate 103 is vertically fixed to the upper end of the fixed base plate 113. A reducer 102 is fixed to the inner side of the reducer mounting plate 103. The output end of the servo motor 101 is connected to the input end of the reducer 102. The output end of the reducer 102 is coaxially fixed to the spline shaft 112 through a coupling 104. The spline shaft 112 is rotatably mounted inside the upper bearing mounting seat 105 through a deep groove ball bearing. One side of the upper bearing mounting seat 105 is bolted to the surface of the fixed base plate 113. The axis of the spline shaft 112 is coaxial with the positioning center axis of the watch body clamping seat 8. The setup includes: a spline assembly 106 coaxially fitted onto the outside of a spline shaft 112; the inner spline of the spline assembly 106 meshes with the outer spline of the spline shaft 112, forming a circumferentially limited and axially sliding fit; a tightening chuck 108 is connected to the lower end of the spline assembly 106 via a tightening chuck adapter 107; the lower end of the tightening chuck 108 is provided with tightening teeth 1081 for engaging with the water meter components to be tightened; the middle of the tightening chuck 108 has a mounting hole 1082 for mounting with the tightening chuck adapter 107; the tightening chuck 108 and the tightening chuck adapter 107 are detachably fixed by a rotating chuck locking pin and a cotter pin 115, allowing for quick replacement of the appropriate tightening chuck 108 according to the water meter model.

[0024] A cylinder component 110 is also vertically fixed on the fixed base plate 113. The output end of the cylinder component 110 is vertically downward, and a cylinder slider 109 is fixedly connected to the output end of the cylinder component 110. The cylinder slider 109 is fixedly connected to a lower bearing mounting plate 116 via a slider connecting plate 118. The lower bearing mounting plate 116 is rotatably engaged with the tightening chuck adapter 107 via a thrust bearing. The lower bearing mounting plate 116 is axially limited and fixed to the spline assembly 106 via a spline sleeve locking nut 114, so that the cylinder component 110 can independently drive the tightening chuck 108 to perform lifting and lowering movements. The servo motor 101 and the reducer 102 maintain stability during the tightening operation. The holding position is fixed, forming a dynamic and static separation drive structure; the tightening mechanism 1 is also equipped with a buffer spring 119 and a linear bearing 117. The buffer spring 119 is fitted on the outside of the spline kit 106, and its two ends abut against the lower bearing mounting plate 116 and the upper bearing mounting seat 105 respectively, to buffer the rigid impact on the water meter body 15 during the descent of the tightening chuck 108; the linear bearing 117 is fixed on the fixed base plate 113, and the inner ring of the linear bearing 117 slides with the guide shaft vertically set on the slider connecting plate 118, to accurately guide the lifting and lowering movement of the tightening chuck 108 and avoid swaying during the tightening process.

[0025] The meter body clamping water injection mechanism 6 includes a cylinder fixing frame 610, an inlet-side clamping cylinder 69, an outlet-side clamping cylinder 61, an inlet connector 67, an outlet connector 62, an inlet channel 68, and an outlet channel 63. The cylinder fixing frame 610 is fixed to the intermediate workbench 7 by bolts. The inlet-side clamping cylinder 69 and the outlet-side clamping cylinder 61 are symmetrically fixed to the cylinder fixing frame 610 and are located on the left and right sides of the meter body clamping base 8, respectively. The output ends of the two cylinders are coaxially opposite each other. The output end of the inlet-side clamping cylinder 69 is connected to the inlet... The water flow channel 68 is fixedly connected to the water inlet connector 67, and the output end of the water outlet clamping cylinder 61 is fixedly connected to the water outlet connector 62 through the water outlet flow channel 63. A water inlet sealing gasket 66 is provided at one end of the water inlet connector 67 facing the meter body clamping seat 8, and a water outlet sealing gasket 64 is provided at one end of the water outlet connector 62 facing the meter body clamping seat 8. The water meter body 15 is adapted to the slight positional deflection of the water meter body 15 through a flexible clamping method, so that the clamping of the water meter body 15 and the water filling operation are carried out simultaneously, and water leakage is prevented during the wet installation process.

[0026] Meter clamping base 8 is detachably installed on meter clamping base 81 via meter clamping base fixing part 82. Meter clamping base 81 is fixed in the table surface of intermediate workbench 7. Meter clamping base 8 is equipped with guide sleeve 65 for quick replacement. The appropriate meter clamping base 8 and guide sleeve 65 can be quickly replaced according to different specifications of water meter body 15, realizing rapid changeover production of different models of water meters. The frame body 5 is also equipped with an electrical control box 14. The electrical control box 14 is equipped with a PLC control unit, which is electrically connected to servo motor 101, cylinder 110, water inlet side clamping cylinder 69, and water outlet side clamping cylinder 61, respectively, for controlling the coordinated operation of various mechanisms of the equipment.

[0027] The working principle of this embodiment is as follows: Before operation, the left water tank 11 is replenished with water by manually using ball valve 10 and tap 13. The water meter movement and other parts to be soaked are placed in the hollow material basket 12 and immersed in the water in the left water tank 11 to complete the soaking. At the same time, according to the model of the water meter to be assembled, the appropriate meter body clamping seat 8, guide sleeve 65 and tightening clamp 108 are replaced to complete the equipment change.

[0028] During operation, the water meter body 15 is positioned on the meter body clamping seat 8. The electrical control box 14 controls the inlet side clamping cylinder 69 and the outlet side clamping cylinder 61 to move synchronously, driving the inlet connector 67 and the outlet connector 62 to move towards the meter body. The inlet and outlet of the water meter body 15 are clamped and sealed by the sealing gaskets on both sides. At the same time, clean water is injected into the water meter body 15 through the inlet connector 67, completing the synchronous operation of meter body clamping and water injection. Subsequently, the control box 14 controls the cylinder 110 to move, causing the tightening clamp 108 to descend and engage with the water meter component to be tightened. The buffer spring 119 buffers the rigid impact during the descent. The servo motor 101 starts and, through the reducer 102, spline shaft 112, spline assembly 106, and tightening clamp adapter 107, drives the tightening clamp 108 to rotate, completing the wet tightening operation with the set torque. After tightening is completed, the servo motor 101 stops running, the cylinder 110 drives the tightening clamp 108 to rise and reset, and the clamping cylinders on both sides drive the connector to retract and reset, so that the water meter that has been wet-installed can be removed. Repeat the above process to complete the wet installation and tightening operation of batch water meters.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A water meter wet installation tightening machine, comprising a frame body (5), a tightening mechanism (1) mounted on the upper part of the frame body (5), and a meter body clamping and water injection mechanism (6) mounted on the frame body (5), characterized in that: The frame (5) is made of stainless steel welded and formed. The upper part of the frame is set with three working areas: left, middle and right. The left working area is equipped with a left water tank (11) with a built-in hollow material basket (12) for soaking and transferring water meter parts. The middle working area is a middle worktable (7) with a meter body clamping seat (8). The meter body clamping and water injection mechanism (6) is located here to complete the clamping, water injection and wet installation tightening of the water meter body (15). The right working area is a right worktable (4) for placing water meter assembly parts. The frame (5) is equipped with a tool rack (2) at the corresponding position, forming an integrated operation layout of left soaking, middle wet installation and right parts. The servo motor of the tightening mechanism (1) The machine (101) and reducer (102) are fixed on the upper part of the frame. The output end of the reducer is connected to the tightening head (108) via the spline shaft (112) and spline assembly (106). The cylinder (110) drives the tightening head (108) to rise and fall independently. The positions of the servo motor (101) and reducer (102) are fixed, and the positions of the servo motor (101) and reducer (102) do not need to move up and down. The meter body clamping water injection mechanism (6) includes a water inlet clamping cylinder (69) and a water outlet clamping cylinder (61) symmetrically arranged on both sides of the meter body clamping seat (8). The output ends of the two cylinders are connected to the water inlet connector (67) and the water outlet connector (62) respectively via the flow channel.

2. A water meter wet installation tightening machine according to claim 1, characterized in that: The tightening mechanism (1) includes an upper frame (51) fixed to the top of the frame body (5), and a fixed base plate (113) fixed to the surface of the upper frame (51); a reducer mounting plate (103) is fixed to the upper end of the fixed base plate (113), and a reducer (102) is fixed to the inside of the reducer mounting plate (103). The output end of the servo motor (101) is connected to the input end of the reducer (102) for transmission, and the output end of the reducer (102) is coaxially fixed to the spline shaft (112) through a coupling (104); The key shaft (112) is rotatably mounted inside the upper bearing mounting seat (105), which is fixed to the surface of the fixed base plate (113). The spline assembly (106) is coaxially fitted outside the spline shaft (112) and circumferentially limited. The tightening chuck (108) is connected to the lower end of the spline assembly (106) via the tightening chuck adapter (107). The cylinder assembly (110) is fixed on the fixed base plate (113), and its output end is connected to the tightening chuck adapter (107).

3. A water meter wet installation tightening machine according to claim 2, characterized in that: The output end of the cylinder component (110) is fixedly connected to the cylinder slider (109). The cylinder slider (109) is connected to the lower bearing mounting plate (116) through the slider connecting plate (118). The lower bearing mounting plate (116) rotates with the tightening chuck adapter (107) through the bearing to drive the tightening chuck (108) to complete the lifting action. The lower bearing mounting plate (116) is fixedly connected to the spline kit (106) through the spline sleeve locking nut (114).

4. A water meter wet installation tightening machine according to claim 2, characterized in that: The tightening mechanism (1) is also equipped with a buffer spring (119) and a linear bearing (117). The buffer spring (119) is used to buffer the impact on the water meter body (15) during the descent of the tightening clamp (108), and the linear bearing (117) is used to guide the lifting and lowering movement of the tightening clamp (108) in the buffered state.

5. A water meter wet installation tightening machine according to claim 2, characterized in that: The end of the tightening clamp (108) is provided with tightening teeth (1081) for engaging with the water meter components to be tightened. The middle of the tightening clamp (108) is provided with a mounting hole (1082) for cooperating with the tightening clamp adapter (107). The tightening clamp (108) and the tightening clamp adapter (107) are detachably fixed by rotating the clamping pin and the cotter pin (115).

6. A water meter wet installation tightening machine according to claim 1, characterized in that: The body clamping water injection mechanism (6) also includes a cylinder fixing frame (610), an inlet channel (68) and an outlet channel (63); the cylinder fixing frame (610) is fixed on the intermediate workbench (7), and the inlet clamping cylinder (69) and the outlet clamping cylinder (61) are symmetrically fixed on the cylinder fixing frame (610); the output end of the inlet clamping cylinder (69) is connected to the inlet connector (67) through the inlet channel (68), and the output end of the outlet clamping cylinder (61) is connected to the outlet connector (62) through the outlet channel (63).

7. A water meter wet installation tightening machine according to claim 6, characterized in that: The end of the water inlet connector (67) is provided with a water inlet side sealing gasket (66), and the end of the water outlet connector (62) is provided with a water outlet side sealing gasket (64), so as to adapt to the position deflection of the water meter body (15) through flexible clamping, and realize the clamping of the water meter body (15) and the water injection operation are carried out simultaneously.

8. A water meter wet installation tightening machine according to claim 1, characterized in that: The watch body clamping base (8) is detachably installed on the watch body clamping base (81) via the watch body clamping base fixing part (82). The watch body clamping base (81) is fixed in the middle worktable (7). The watch body clamping base (8) is equipped with a guide sleeve (65) for quick replacement.

9. A water meter wet installation tightening machine according to claim 1, characterized in that: The left water tank (11) is equipped with a Y-type filter (9), a manual ball valve (10) and a faucet (13), which are used for filtering impurities in the soaking water, controlling the water flow, and replenishing water, respectively.

10. A water meter wet installation tightening machine according to claim 1, characterized in that: The frame body (5) is also equipped with an electrical control box (14) and a bracket locking knob (3). The electrical control box (14) is used to control the coordinated operation of various mechanisms of the equipment, and the bracket locking knob (3) is used to lock and fix the position of the bracket (2).

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