A tightening device for bubble-free installation of a water meter

Abstract

The utility model discloses a kind of tightening equipment for water gauge bubble-free installation, including torque wrench body, the left end of torque wrench body is equipped with adjusting frame, the inside left side of adjusting frame is equipped with wrench head, the right side of wrench head is integrally fixed and installed with adjusting worm wheel tooth, the inside right side of adjusting frame is equipped with adjusting worm, the front and rear ends of adjusting worm are fixedly installed with second connecting bearing, the inside upper and lower of adjusting frame is equipped with first connecting bearing.The utility model is by rotating adjusting worm drive and the adjusting worm wheel tooth engaged with it, to realize the stepless angle adjustment of wrench head around its axis.The mechanism enables operator to accurately adjust wrench head to any angle matching with water gauge nut in narrow space, not only greatly improve space adaptability, more ensure the best engagement state between wrench and nut, effectively avoid the problem such as slippage, gnawing nut caused by angle deviation.

Description

Technical Field

[0001] This utility model relates to the technical field of water meter installation tools, specifically a tightening device for air-free installation of water meters. Background Technology

[0002] In waterworks projects and household meter installation, water meters, as measuring instruments for trade settlement, have their installation quality directly affecting the accuracy and reliability of measurement. Currently, the connection between water meters and pipes is mostly achieved through threaded fastening or union flanges, and their sealing performance depends on the uniform compression of rubber gaskets under a specific preload. If the tightening torque is insufficient, the connection will not be properly sealed, leading to leaks or air bubbles in the pipes. The presence of air bubbles will seriously affect the rotation speed of the water impeller, resulting in inaccurate measurement, causing economic disputes or water waste. If the tightening torque is too high, it can easily damage the plastic or copper threads of the water meter or pipe fittings, which can also lead to sealing failure or even equipment failure. Therefore, torque wrenches are widely used tightening equipment.

[0003] Existing torque wrenches mostly have fixed handles and drive heads or only a few preset angles, resulting in extremely limited adjustment capabilities. When working in extremely confined or structurally complex spaces such as water meter wells or behind cabinets, the fixed tool angles often cannot match the orientation of the water meter nut on the pipe, severely restricting the tool's applicability. Therefore, we propose a tightening device for bubble-free installation of water meters. Utility Model Content

[0004] The purpose of this invention is to provide a tightening device for air-free installation of water meters, addressing the problem mentioned in the background art where the handle and drive head of existing torque wrenches are mostly fixed or have only a few preset angles, resulting in extremely limited adjustment capabilities. When working in extremely confined or structurally complex spaces such as water meter wells or the back of cabinets, the fixed tool angle often cannot match the orientation of the water meter nut on the pipe, severely restricting the applicability of the tool.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tightening device for bubble-free installation of water meters, comprising:

[0006] The torque wrench body has an adjustment frame installed at its left end. A wrench head is installed on the left side inside the adjustment frame. An adjustment worm gear is integrally fixedly installed on the right side of the wrench head. An adjustment worm is installed on the right side inside the adjustment frame. Second connecting bearings are fixedly installed at the front and rear ends of the adjustment worm. First connecting bearings are installed on the upper and lower sides inside the adjustment frame.

[0007] As a preferred embodiment of the tightening device for bubble-free installation of water meters according to this utility model, the wrench head is movably connected to the adjusting frame via the first connecting bearing, and the wrench head can rotate inside the adjusting frame via the first connecting bearing.

[0008] As a preferred embodiment of the tightening device for bubble-free installation of water meters according to this utility model, the adjusting worm is movably connected to the adjusting frame through the second connecting bearing, and the adjusting worm is engaged with the teeth of the adjusting worm wheel.

[0009] As a preferred embodiment of the tightening device for bubble-free installation of water meters according to this utility model, the torque wrench body further comprises:

[0010] A limiting mounting groove is formed inside the left end of the torque wrench body. A limiting mounting block passes through the inside of the limiting mounting groove. A first limiting mounting hole is formed inside the limiting mounting block. A second limiting mounting hole, corresponding to the first limiting mounting hole, is formed on the upper and lower sides of the inner wall of the limiting mounting groove. A fixing bolt passes through the inside of the second limiting mounting hole.

[0011] As a preferred embodiment of the tightening device for bubble-free installation of water meters according to this utility model, the limiting mounting block is fixedly connected to the adjusting frame, the shape and size of the limiting mounting block matches the shape and size inside the limiting mounting groove, and the adjusting frame is detachably connected to the torque wrench body through the fixing bolt, the limiting mounting block, the first limiting mounting hole, the second limiting mounting hole and the limiting mounting groove.

[0012] Compared with the prior art, this utility model provides a tightening device for air-free installation of water meters, which has the following beneficial effects:

[0013] 1. This utility model achieves stepless angle adjustment of the wrench head around its axis by rotating the adjusting worm gear to drive the meshing teeth of the adjusting worm wheel. This mechanism allows the operator to precisely adjust the wrench head to any angle that matches the water meter nut in a confined space, greatly improving spatial adaptability and ensuring optimal meshing between the wrench and the nut, effectively avoiding problems such as slippage and nut damage caused by angle deviation. Simultaneously, the inherent self-locking characteristic of the worm gear mechanism provides stable rigid support after adjustment, ensuring that the angle remains constant during tightening, thereby transmitting the preset torque more accurately to the connecting parts, providing a core guarantee for achieving bubble-free and leak-free installation of the water meter.

[0014] 2. This utility model employs a modular design, making the adjustment frame and torque wrench body detachably connected. This design creates a scalable tool system, allowing users to quickly replace the adjustment frame module with different models or sizes of wrench heads according to actual installation needs. This enables a single torque wrench body to meet the installation requirements of various water meter specifications, greatly expanding the tool's applicability and reducing the cost for users to purchase multiple dedicated torque tools. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the wrench head and the adjustment frame of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the torque wrench body of this utility model.

[0018] In the diagram: 1. Torque wrench body; 2. Adjusting worm gear; 3. Adjusting worm wheel teeth; 4. First connecting bearing; 5. Wrench head; 6. Adjusting frame; 7. Fixing bolt; 8. Limiting mounting block; 9. Second connecting bearing; 10. First limiting mounting hole; 11. Second limiting mounting hole; 12. Limiting mounting groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-3 A tightening device for bubble-free installation of water meters includes a torque wrench body 1, an adjusting frame 6 installed at the left end of the torque wrench body 1, a wrench head 5 installed on the left side inside the adjusting frame 6, an adjusting worm gear tooth 3 integrally fixedly installed on the right side of the wrench head 5, an adjusting worm 2 installed on the right side inside the adjusting frame 6, second connecting bearings 9 fixedly installed at the front and rear ends of the adjusting worm 2, and first connecting bearings 4 installed on the upper and lower sides inside the adjusting frame 6.

[0021] In this implementation scheme: rotating the adjusting worm 2 drives the meshing adjusting worm gear 3, thereby achieving stepless angle adjustment of the wrench head 5 around its axis. This mechanism allows the operator to precisely adjust the wrench head 5 to any angle that matches the water meter nut in a confined space, greatly improving spatial adaptability and ensuring optimal meshing between the wrench and the nut, effectively avoiding problems such as slippage and nut damage caused by angle deviation. Simultaneously, the inherent self-locking characteristic of the worm gear mechanism provides stable rigid support after adjustment, ensuring the angle remains constant during tightening, thus transmitting the preset torque more accurately to the connecting parts, providing a core guarantee for achieving bubble-free and leak-free installation of the water meter.

[0022] Furthermore:

[0023] In an optional embodiment, the wrench head 5 is movably connected to the adjusting frame 6 via the first connecting bearing 4, and the wrench head 5 rotates inside the adjusting frame 6 via the first connecting bearing 4.

[0024] In this implementation scheme: the structure rotatably supports the wrench head 5 inside the adjusting frame 6 through the first connecting bearing 4, which greatly reduces the frictional resistance when the wrench head 5 rotates, making the operation easy, sensitive and precise when making fine-tuning of the angle through the worm gear.

[0025] Furthermore:

[0026] In an optional embodiment, the adjusting worm 2 is movably connected to the adjusting frame 6 via the second connecting bearing 9, and the adjusting worm 2 is meshed with the teeth 3 of the adjusting worm wheel.

[0027] In this implementation scheme: the structure provides a stable and low-friction rotary support for the adjusting worm 2 through the second connecting bearing 9, making the operation of rotating the adjusting worm 2 extremely easy and smooth; the inherent reverse self-locking characteristic of the worm gear mechanism ensures that the angle of the wrench head 5 will not change due to the reverse force during the tightening operation, thus providing a crucial rigid guarantee for the transmission of precise torque.

[0028] Furthermore:

[0029] In an optional embodiment, the torque wrench body 1 further includes:

[0030] The limiting mounting groove 12 is opened at the left end of the inside of the torque wrench body 1. The limiting mounting block 8 passes through the inside of the limiting mounting groove 12. The limiting mounting block 8 has a first limiting mounting hole 10 inside. The upper and lower sides of the inner wall of the limiting mounting groove 12 have a second limiting mounting hole 11 corresponding to the first limiting mounting hole 10. The fixing bolt 7 passes through the inside of the second limiting mounting hole 11.

[0031] In this implementation scheme, a modular design is adopted, in which the adjusting frame 6 and the torque wrench body 1 are detachably connected. This design creates a scalable tool system, allowing users to quickly replace the adjusting frame 6 modules equipped with different models or sizes of wrench heads 5 according to actual installation needs. This enables a single torque wrench body 1 to meet the installation requirements of various water meter specifications, greatly expanding the tool's applicability and reducing the cost for users to purchase multiple dedicated torque tools.

[0032] Furthermore:

[0033] In an optional embodiment, the limiting mounting block 8 is fixedly connected to the adjusting frame 6. The shape and size of the limiting mounting block 8 match the shape and size inside the limiting mounting groove 12. The adjusting frame 6 is detachably connected to the torque wrench body 1 through the fixing bolt 7, the limiting mounting block 8, the first limiting mounting hole 10, the second limiting mounting hole 11, and the limiting mounting groove 12.

[0034] In this implementation scheme: the detachable connection structure achieves precise positioning and tight fit between the adjustment frame 6 and the torque wrench body 1 by matching the precise shape of the limiting mounting block 8 and the limiting mounting groove 12, effectively eliminating gaps and shaking at the connection point, and providing a solid rigid foundation for the transmission of high-precision torque.

[0035] Working Principle: When using this tightening device for bubble-free installation of water meters, the user first selects the adjustment frame 6 module with the corresponding wrench head 5 according to the specifications of the water meter to be installed. The user then precisely embeds the limiting mounting block 8 on the module into the limiting mounting groove 12 at the front end of the torque wrench body 1, and tightens it using the fixing bolt 7 screwed into the first limiting mounting hole 10 and the second limiting mounting hole 11, thus quickly completing the tool's functional configuration. When operating in confined or irregularly oriented spaces, the user can rotate the adjusting worm gear 2 located on the adjustment frame 6. Through its precise meshing with the adjusting worm wheel teeth 3 fixed at the root of the wrench head 5, the user drives the entire wrench head 5 to perform stepless and precise angular deflection around the axis of the first connecting bearing 4. Crucially, the inherent reverse self-locking characteristic of the worm gear mechanism allows the wrench head 5 to be firmly locked after adjustment to the desired angle, without any additional locking steps. Finally, during the tightening operation, the torque applied by the torque wrench body 1 is transmitted completely and without angular deviation to the wrench head 5 through the locked adjustment mechanism and acts on the water meter nut, ensuring the accurate implementation of the preset torque value and the uniform compression of the sealing gasket. This fundamentally achieves bubble-free and leak-free installation of the water meter. This is the working principle of the tightening device used for bubble-free installation of water meters.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tightening device for bubble-free installation of water meters, characterized in that, include: A torque wrench body (1) is provided. An adjustment frame (6) is installed on the left end of the torque wrench body (1). A wrench head (5) is installed on the left side inside the adjustment frame (6). An adjustment worm gear tooth (3) is integrally fixed on the right side of the wrench head (5). An adjustment worm (2) is installed on the right side inside the adjustment frame (6). Second connecting bearings (9) are fixedly installed at both ends of the adjustment worm (2). First connecting bearings (4) are installed on the upper and lower sides inside the adjustment frame (6).

2. The tightening device for bubble-free installation of water meters according to claim 1, characterized in that, The wrench head (5) is movably connected to the adjusting frame (6) via the first connecting bearing (4), and the wrench head (5) rotates inside the adjusting frame (6) via the first connecting bearing (4).

3. The tightening device for bubble-free installation of water meters according to claim 1, characterized in that, The adjusting worm (2) is movably connected to the adjusting frame (6) through the second connecting bearing (9), and the adjusting worm (2) is meshed with the teeth (3) of the adjusting worm wheel.

4. A tightening device for bubble-free installation of water meters according to claim 1, characterized in that, The torque wrench body (1) is also provided with: A limiting mounting groove (12) is provided inside the left end of the torque wrench body (1). A limiting mounting block (8) is provided inside the limiting mounting groove (12). A first limiting mounting hole (10) is provided inside the limiting mounting block (8). A second limiting mounting hole (11) corresponding to the first limiting mounting hole (10) is provided on the upper and lower sides of the inner wall of the limiting mounting groove (12). A fixing bolt (7) is provided inside the second limiting mounting hole (11).

5. A tightening device for bubble-free installation of water meters according to claim 4, characterized in that, The limiting mounting block (8) is fixedly connected to the adjusting frame (6). The shape and size of the limiting mounting block (8) match the shape and size inside the limiting mounting groove (12). The adjusting frame (6) is detachably connected to the torque wrench body (1) through the fixing bolt (7), the limiting mounting block (8), the first limiting mounting hole (10), the second limiting mounting hole (11), and the limiting mounting groove (12).

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