A valve packing nut simultaneous tightening tool

Abstract

The utility model relates to a kind of valve packing nut simultaneously tightening tool, comprising: tool main body;Tightening assembly, including at least two sleeves, sleeve rotation is set on tool main body, sleeve is used to cooperate with valve packing nut, sleeve is equipped with gear;Gear ring, with gear meshing, gear ring is equipped with connecting portion, connecting portion is used to connect with tightening tool. By at least two sleeves being set on tool main body, gear ring is meshed with the gear set on sleeve, to realize the synchronous action of two and above multiple sleeves. By connecting portion connecting tightening tool, the torque is output by tightening tool, gear ring is driven to rotate, gear ring is driven to rotate by gear ring, to drive sleeve rotation, realize multiple sleeves simultaneously to multiple nut execution tightening fixation. The present application can effectively ensure that multiple valve packing nut reaches consistent compression amount, ensure packing pressing plate horizontal assembly, and, since multiple valve packing nut is simultaneously assembled, effectively improve assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nut tightening fixtures, and in particular to a fixture for simultaneously tightening valve packing nuts. Background Technology

[0002] Currently, valve packing requires multiple nuts to secure the packing plate. The existing nut tightening process typically involves tightening each nut individually using a wrench or air gun to achieve the specified compression. However, the current assembly process, relying on manual or air gun tightening and visual inspection, makes it difficult to ensure consistent compression across all nuts. Inconsistent compression can cause the packing plate to tilt, potentially damaging the valve stem in severe cases. Utility Model Content

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a tooling for simultaneously tightening valve packing nuts, which solves the problem that the existing valve packing nut tightening process uses a wrench or air gun to tighten a single nut and then visually inspects it. This makes it difficult to ensure that multiple nuts achieve a consistent compression amount. However, inconsistent compression amounts can easily cause the packing pressure plate to tilt, and in severe cases, it may damage the valve stem.

[0004] To achieve the above and other related objectives, this utility model provides a tooling for simultaneously tightening valve packing nuts, comprising:

[0005] Tooling body;

[0006] The tightening assembly includes at least two sleeves, which are rotatably mounted on the tooling body. The sleeves are used to engage with valve packing nuts, and gears are provided on the sleeves.

[0007] A gear ring meshes with the gear, and the gear ring has a connecting part for connecting with a tightening tool.

[0008] Optionally, the tooling body is provided with a plurality of rotating holes, and the sleeve passes through the rotating holes and is rotatably connected to the tooling body.

[0009] Optionally, a guide sleeve is provided inside the rotating hole, the guide sleeve is interference-fitted with the rotating hole, and the sleeve is clearance-fitted with the guide sleeve.

[0010] Optionally, the sleeve is provided with a keyway, and the gear is provided with a connecting key, the connecting key engaging with the keyway.

[0011] Optionally, the end face of the gear along the axial direction abuts against the tooling body to limit the sleeve along the axial direction of the tooling body.

[0012] Optionally, the sleeve is provided with a first axial limiting component, which is used to limit the gear along the axial direction of the sleeve.

[0013] Optionally, the first axial limiting component includes a first retaining ring and a first locking member. The first retaining ring abuts against the end face of the gear, and the first locking member is threadedly connected to the sleeve, and the first locking member abuts against the first retaining ring.

[0014] Optionally, the tooling body is provided with a second axial limiting component, which is used to limit the gear ring along the axial direction of the tooling body.

[0015] Optionally, the second axial limiting component includes a second retaining ring and a second locking member. The second retaining ring abuts against the gear ring, and the second locking member is threadedly connected to the tooling body, and the second locking member abuts against the second retaining ring.

[0016] Optionally, the second retaining ring is provided with a limiting groove, and the gear ring is provided with a limiting part along the circumferential direction. The limiting part and the limiting groove are in concave-convex fit, and the limiting part and the limiting groove are in clearance fit.

[0017] As described above, this utility model has the following beneficial effects: By setting at least two sleeves on the main body of the tooling, the sleeves cooperate with the valve packing nuts, and the gear ring meshes with the gears set on the sleeves, thereby achieving synchronous operation of two or more sleeves. A tightening tool is connected through the connecting part set on the gear ring, and the tightening tool outputs torque to drive the gear ring to rotate. The gear ring drives the gears to rotate, thereby driving the sleeves to rotate, enabling multiple sleeves to simultaneously tighten and fix multiple nuts. This application can effectively ensure that multiple valve packing nuts achieve a consistent compression amount, and the packing pressure plate can be horizontally assembled without visual inspection. Furthermore, since multiple valve packing nuts are assembled simultaneously, assembly efficiency is effectively improved. Attached Figure Description

[0018] Figure 1 The diagram shown is a cross-sectional view of the valve packing nut tightening fixture in use, as illustrated in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures

[0020] Tooling body 1, sleeve 2, valve packing nut 3, gear 4, connecting key 401, gear ring 5, connecting part 501, limiting part 502, guide sleeve 6, first axial limiting assembly 7, first retaining ring 701, first locking part 702, second axial limiting assembly 8, second retaining ring 801, second locking part 802. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model.

[0022] Please see Figure 1 It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components relevant to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the form, quantity, and proportion of each component can be arbitrarily changed, and the component layout may be more complex. The structures, proportions, and sizes shown in the accompanying drawings are only for illustrative purposes and to assist those skilled in the art in understanding and reading the content disclosed in the specification. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives of this utility model, should still fall within the scope of the technical content disclosed in this utility model. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in this specification are only for clarity of description and are not intended to limit the scope of implementation of this utility model. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] Before describing the embodiments of this utility model in detail, the application environment of this utility model will be described first. The technology of this utility model is mainly applied to the field of nut tightening tooling technology. This utility model is used to solve the problem that the existing valve packing nut tightening process, which uses a wrench or air gun to tighten a single nut and then visually inspects it, makes it difficult to ensure that multiple nuts achieve a consistent compression amount. However, inconsistent compression amounts can easily cause the packing pressure plate to tilt, and in severe cases, may damage the valve stem.

[0024] Please combine Figure 1 As shown, this utility model provides a tooling for simultaneously tightening valve packing nuts 3.

[0025] In an exemplary embodiment of this application, the valve packing nut 3 tightening fixture includes: fixture body 1; tightening assembly including at least two sleeves 2, the sleeves 2 being rotatably mounted on the fixture body 1, the sleeves 2 being used to cooperate with the valve packing nut 3, the sleeves 2 being provided with gears 4; and a gear ring 5, meshing with gears 4, the gear ring 5 being provided with a connecting part 501, the connecting part 501 being used to connect with a tightening tool.

[0026] In this embodiment, at least two sleeves 2 are provided on the tooling body 1. The sleeves 2 cooperate with the valve packing nuts 3. The gear ring 5 meshes with the gear 4 provided on the sleeves 2, thereby achieving synchronous operation of two or more sleeves 2. A tightening tool is connected to the connecting part 501 provided on the gear ring 5. The tightening tool outputs torque to drive the gear ring 5 to rotate. The gear ring 5 drives the gear 4 to rotate, thereby driving the sleeves 2 to rotate, so that multiple sleeves 2 can simultaneously tighten and fix multiple nuts. This application can effectively ensure that multiple valve packing nuts 3 achieve a consistent compression amount, and the packing pressure plate can be assembled horizontally without visual inspection. Furthermore, since multiple valve packing nuts 3 are assembled simultaneously, the assembly efficiency is effectively improved.

[0027] It is worth noting that the tightening tools include, but are not limited to, wrenches, air guns, etc., and the connecting part 501 includes, but is not limited to, a square or hexagonal structure. In this embodiment, the connecting part 501 is designed as an external hexagonal structure, which can be adapted to connect with an air gun. At the same time, a suitable wrench can be selected to cooperate with the external hexagonal connecting part 501 to drive the gear ring 5 to rotate.

[0028] In an exemplary embodiment of this application, the tooling body 1 is provided with a plurality of rotating holes, and the sleeve 2 passes through the rotating holes and is rotatably connected to the tooling body 1.

[0029] In this embodiment, multiple rotating holes are provided on the tooling body 1 to rotate and install the sleeves 2, thereby realizing the installation of multiple sleeves 2 with the tooling body 1.

[0030] In an exemplary embodiment of this application, a guide sleeve 6 is provided inside the rotating hole, the guide sleeve 6 is interference-fitted with the rotating hole, and the sleeve 2 is clearance-fitted with the guide sleeve 6.

[0031] In this embodiment, the guide sleeve 6 is made of wear-resistant material (such as copper alloy, stainless steel, engineering plastic, etc.), which can greatly reduce the friction loss of the contact surface, avoid the gap expansion caused by wear, and avoid problems such as vibration, noise or rotation jamming.

[0032] In an exemplary embodiment of this application, the sleeve 2 is provided with a keyway, and the gear 4 is provided with a connecting key 401, which engages with the keyway.

[0033] In this embodiment, the connecting key 401 and the keyway form a rigid connection, which can transmit the rotational motion or torque of the gear 4 to the sleeve 2 without slippage, avoiding power loss due to slippage. Furthermore, the engagement between the keyway and the connecting key 401 restricts the relative rotation between the gear 4 and the sleeve 2, maintaining a fixed phase relationship between them in the circumferential direction.

[0034] In an exemplary embodiment of this application, the end face of the gear 4 along the axial direction abuts against the tooling body 1 to limit the sleeve 2 along the axial direction of the tooling body 1.

[0035] In this embodiment, the end face of the gear 4 abuts against the tooling body 1 along the axial direction, which restricts the axial displacement between the sleeve 2 and the tooling body 1 and prevents the sleeve 2 from falling off the tooling body 1.

[0036] In an exemplary embodiment of this application, the sleeve 2 is provided with a first axial limiting component 7, which is used to limit the gear 4 along the axial direction of the sleeve 2.

[0037] In this embodiment, the first axial limiting component 7 is connected to the sleeve 2 and limits the gear 4 along the axial direction of the sleeve 2, thereby preventing axial displacement between the gear 4 and the sleeve 2.

[0038] In an exemplary embodiment of this application, the first axial limiting component 7 includes a first retaining ring 701 and a first locking member 702. The first retaining ring 701 abuts against the end face of the gear 4, and the first locking member 702 is threadedly connected to the sleeve 2, and the first locking member 702 abuts against the first retaining ring 701.

[0039] In this embodiment, the first locking member 702 includes, but is not limited to, a cross-grooved pan head screw. The outer diameter of the first retaining ring 701 is larger than the end diameter of the sleeve 2 and the inner diameter of the gear 4, but smaller than the outer diameter of the gear 4. The head of the first locking member 702 is larger than the inner diameter of the first retaining ring 701. The first locking member 702 passes through the first retaining ring 701 and is threadedly connected to the sleeve 2, thereby locking and fixing the first retaining ring 701 on the sleeve 2. Since the outer diameter of the sleeve 2 is larger than the end diameter of the sleeve 2 and the inner diameter of the gear 4, the first retaining ring 701 can abut against the gear 4, thereby limiting the gear 4 along the axial direction of the sleeve 2.

[0040] In an exemplary embodiment of this application, the tooling body 1 is provided with a second axial limiting component 8, which is used to limit the gear ring 5 along the axial direction of the tooling body 1.

[0041] In this embodiment, the second axial limiting component 8 is connected to the tooling body 1 and limits the gear ring 5 along the axial direction of the tooling body 1, thereby preventing axial displacement between the gear ring 5 and the tooling body 1.

[0042] In an exemplary embodiment of this application, the second axial limiting component 8 includes a second retaining ring 801 and a second locking member 802. The second retaining ring 801 abuts against the gear ring 5, and the second locking member 802 is threadedly connected to the tooling body 1, and the second locking member 802 abuts against the second retaining ring 801.

[0043] In this embodiment, the second locking member 802 includes, but is not limited to, using an internal hexagonal head screw or a countersunk screw. The second retaining ring 801 has a countersunk hole. The second locking member 802 passes through the second retaining ring 801 and is threadedly connected to the tooling body 1, and abuts against the second retaining ring 801, thereby fixing the second retaining ring 801 to the tooling body 1. The second retaining ring 801 abuts against the gear ring 5, thereby enabling the second retaining ring 801 to axially limit the gear ring 5 and prevent axial displacement between the gear ring 5 and the tooling body 1.

[0044] In an exemplary embodiment of this application, the second retaining ring 801 is provided with a limiting groove, and the toothed ring 5 is provided with a limiting part 502 along the circumferential direction. The limiting part 502 is in concave-convex fit with the limiting groove, and the limiting part 502 is in clearance fit with the limiting groove.

[0045] In this embodiment, a limiting part 502 is provided on the outer wall of the gear ring 5 along the circumferential direction. The limiting part 502 protrudes radially from the outer wall of the gear ring 5. By engaging with the limiting groove provided on the second retaining ring 801, the axial displacement of the gear ring 5 along the tooling body 1 can be restricted. Furthermore, the limiting part 502 is provided along the circumferential direction of the gear ring 5, and the limiting part 502 is in clearance engagement with the limiting groove, so that the gear ring 5 can rotate on the second retaining ring 801. Moreover, the gear ring 5 will not disengage from the limiting groove at any position along the circumferential direction.

[0046] The working principle involves at least two sleeves 2 mounted on the main body 1. These sleeves 2 engage with valve packing nuts 3, and a gear ring 5 meshes with a gear 4 mounted on the sleeves 2, enabling synchronous movement of two or more sleeves 2. A tightening tool is connected via a connecting part 501 on the gear ring 5. The tightening tool outputs torque, driving the gear ring 5 to rotate, which in turn drives the gear 4, thus rotating the sleeves 2. This allows multiple sleeves 2 to simultaneously tighten and fix multiple nuts. This application effectively ensures that multiple valve packing nuts 3 achieve a consistent compression amount, allowing for horizontal assembly of the packing plate without visual inspection. Furthermore, the simultaneous assembly of multiple valve packing nuts 3 significantly improves assembly efficiency.

[0047] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A tooling for simultaneously tightening valve packing nuts, characterized in that, include: Tooling body; The tightening assembly includes at least two sleeves, which are rotatably mounted on the tooling body. The sleeves are used to engage with valve packing nuts, and gears are provided on the sleeves. A gear ring meshes with the gear, and the gear ring has a connecting part for connecting with a tightening tool.

2. The valve packing nut tightening fixture according to claim 1, characterized in that: The tooling body is provided with multiple rotating holes, and the sleeve passes through the rotating holes and is rotatably connected to the tooling body.

3. The valve packing nut tightening fixture according to claim 2, characterized in that: A guide sleeve is provided inside the rotating hole. The guide sleeve is interference-fitted with the rotating hole, and the sleeve is clearance-fitted with the guide sleeve.

4. The valve packing nut tightening fixture according to claim 1, characterized in that: The sleeve is provided with a keyway, and the gear is provided with a connecting key, which is in a concave-convex fit with the keyway.

5. The valve packing nut tightening fixture according to claim 4, characterized in that: The axial end face of the gear abuts against the tooling body to limit the sleeve along the axial direction of the tooling body.

6. The valve packing nut tightening fixture according to claim 5, characterized in that: The sleeve is provided with a first axial limiting component, which is used to limit the gear along the axial direction of the sleeve.

7. The valve packing nut tightening fixture according to claim 6, characterized in that: The first axial limiting component includes a first retaining ring and a first locking member. The first retaining ring abuts against the end face of the gear, and the first locking member is threadedly connected to the sleeve, and the first locking member abuts against the first retaining ring.

8. The valve packing nut tightening fixture according to claim 1, characterized in that: The tooling body is provided with a second axial limiting component, which is used to limit the gear ring along the axial direction of the tooling body.

9. The valve packing nut tightening fixture according to claim 8, characterized in that: The second axial limiting component includes a second retaining ring and a second locking member. The second retaining ring abuts against the gear ring, and the second locking member is threadedly connected to the tooling body, and the second locking member abuts against the second retaining ring.

10. The valve packing nut tightening fixture according to claim 9, characterized in that: The second retaining ring is provided with a limiting groove, and the toothed ring is provided with a limiting part along the circumference. The limiting part and the limiting groove are in concave-convex fit, and the limiting part and the limiting groove are in clearance fit.

Images