A high-pressure cylinder tightening device

By designing a high-pressure gas cylinder tightening device, using components such as brackets, wrenches, and bushings, and combining them with lifting equipment to apply traction force, the problem of tightening high-pressure gas cylinder joints has been solved, achieving efficient and safe tightening operations.

CN224391036UActive Publication Date: 2026-06-23CSSC JIELI GAS TECH (SHANXI) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CSSC JIELI GAS TECH (SHANXI) CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Tightening high-pressure gas cylinder connectors is difficult and inefficient, and traditional manual tightening methods are difficult to implement in on-site operations or emergency situations.

Method used

A high-pressure gas cylinder tightening device was designed, including a bracket, a wrench, a bushing, an anti-rotation clamp, a wire lock, a crane scale, and a lifting device. The lifting device applies traction force and the bushing length to ensure that the joint is tightened to a predetermined torque.

Benefits of technology

It enables simple, portable and efficient tightening of high-pressure gas cylinder connectors, improving operational efficiency and safety, ensuring that the connectors are tightened under the specified torque, avoiding leakage or damage to the gas cylinder, and saving time and labor costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a high-pressure gas cylinder tightening device. The device includes: a bracket for fixing the cylinder body; two wrenches for clamping the connectors at both ends of the high-pressure gas cylinder; a bushing, one end of which is connected to one of the wrenches; an anti-rotation clamp for fixing the other wrench; a wire lock, one end of which is connected to the other end of the bushing; a crane scale connected to the other end of the wire lock for displaying the force applied to the bushing; and a lifting device connected to the crane scale for applying a traction force to the bushing. By using the traction force applied to the bushing by the lifting device and the length of the bushing, the connectors are ensured to be tightened to a predetermined torque. This utility model allows operators to easily achieve the required torsional torque; the device is simple in design and easy to implement, improving operational efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and more specifically, to a high-pressure gas cylinder tightening device. Background Technology

[0002] In the application of high-pressure gas cylinders, tightening the cylinder connectors is a critical step because it directly affects the safety of gas storage and transportation. Tightening cylinder connectors requires a large torque, approximately 7000 N·m. Traditional tightening methods rely on manual labor, which often requires significant manpower, making it difficult to implement in some field operations or emergency situations. Therefore, it is necessary to develop a simple, portable, and effective tightening tool to solve the problem of tightening high-pressure gas cylinder connectors in field operations.

[0003] There is currently no effective solution to the problems of difficulty in tightening high-pressure gas cylinder connectors and low efficiency in existing technologies. Utility Model Content

[0004] This utility model provides a high-pressure gas cylinder tightening device to solve the problems of difficult and inefficient tightening of high-pressure gas cylinder joints in the prior art.

[0005] To achieve the above objectives, this utility model provides a high-pressure gas cylinder tightening device, which includes: a bracket for fixing the cylinder body; two wrenches for clamping the connectors at both ends of the high-pressure gas cylinder; a bushing with one end connected to one of the wrenches; an anti-rotation clamp for fixing the other wrench; a wire lock with one end connected to the other end of the bushing; a crane scale connected to the other end of the wire lock for displaying the force applied to the bushing; and a lifting device connected to the crane scale for applying traction force to the bushing.

[0006] Optionally, the bracket includes: U-shaped clips and bolts; two U-shaped clips are provided, one clipping above the high-pressure gas cylinder and the other clipping below the high-pressure gas cylinder; two bolts are provided, one passing through one side of the two U-shaped clips and tightened with a nut, and the other passing through the other side of the two U-shaped clips and tightened with a nut, so as to fix the body of the high-pressure gas cylinder.

[0007] Optionally, multiple brackets are provided; all of the brackets are spaced apart along the body of the high-pressure gas cylinder.

[0008] Optionally, the U-shaped clip includes: a first connecting plate, a second connecting plate, and a third connecting plate connected in sequence; the first connecting plate and the third connecting plate are both straight plate structures; the second connecting plate is an arc-shaped plate structure; the inner surface of the second connecting plate is in contact with the outer surface of the high-pressure gas cylinder; the bolt is used to pass through the first connecting plate and the third connecting plate.

[0009] Optionally, a handle is provided on one side of the wrench; one end of the bushing is fitted onto the handle of one of the wrenches.

[0010] Optionally, the anti-rotation clamp is provided with a slot for locking and fixing the shaft handle of another wrench.

[0011] Optionally, the traction force applied by the lifting device to the bushing is determined based on the torsional torque required for the high-pressure gas cylinder connector and the length of the bushing.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a high-pressure gas cylinder tightening device, which includes: a bracket for fixing the cylinder body; two wrenches for clamping the connectors at both ends of the high-pressure gas cylinder; a bushing with one end connected to one of the wrenches; an anti-rotation clamp for fixing the other wrench; a wire lock with one end connected to the other end of the bushing; a crane scale connected to the other end of the wire lock for displaying the force applied to the bushing; and a lifting device connected to the crane scale for applying traction force to the bushing. By using the traction force applied to the bushing by the lifting device and the length of the bushing, the connectors are ensured to be tightened to a predetermined torque. This utility model's device allows operators to easily achieve the required torsional torque; its simple design and ease of implementation improve operational efficiency. Attached Figure Description

[0014] Figure 1 This is a front view of a high-pressure gas cylinder tightening device provided in an embodiment of this utility model;

[0015] Figure 2 This is a left view of a high-pressure gas cylinder tightening device provided in an embodiment of this utility model;

[0016] Figure 3 This is a right view of a high-pressure gas cylinder tightening device provided in an embodiment of this utility model.

[0017] Symbol explanation:

[0018] 1. Bracket - 2. High-pressure gas cylinder - 3. Wrench - 4. Connector - 5. Bushing - 6. Anti-rotation clamp - 7. Wire lock - 8. Crane scale - 9. Lifting equipment. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Figure 1 This is a front view of a high-pressure gas cylinder 2 tightening device provided in an embodiment of this utility model; Figure 2 This is a left view of a high-pressure gas cylinder 2 tightening device provided in an embodiment of this utility model; Figure 3 This is a right view of a high-pressure gas cylinder 2 tightening device provided in an embodiment of this utility model; as shown... Figures 1-3 As shown,

[0021] A high-pressure gas cylinder 2 tightening device includes:

[0022] 1. Bracket 1, used to fix the body of high-pressure gas cylinder 2;

[0023] The bracket 1 is a crucial part of this invention, mainly used to fix the high-pressure gas cylinder 2 and prevent it from shifting during operation. Specifically, the bracket 1 includes: U-shaped clips and bolts; two U-shaped clips are provided, one clipping above the high-pressure gas cylinder 2 and the other clipping below it; two bolts are provided, one passing through one side of the two U-shaped clips and tightened with a nut, and the other passing through the other side of the two U-shaped clips and tightened with a nut, to fix the body of the high-pressure gas cylinder 2.

[0024] Bolts and nuts are used to secure the high-pressure gas cylinder 2 with U-shaped clamps, ensuring that the high-pressure gas cylinder 2 does not move when tightening the connector 4, thus avoiding danger caused by inaccurate positioning.

[0025] Furthermore, the U-shaped card includes: a first connecting plate, a second connecting plate, and a third connecting plate connected in sequence;

[0026] The first connecting plate and the third connecting plate are both straight plate structures; the second connecting plate is an arc-shaped plate structure; the inner surface of the second connecting plate is in contact with the outer surface of the high-pressure gas cylinder 2; the bolt is used to pass through the first connecting plate and the third connecting plate.

[0027] Specifically, one bolt passes through the two first connecting plates in sequence to connect one side of the two U-shaped clips and is fixed with a nut; the other bolt passes through the two third connecting plates in sequence to connect the other side of the two U-shaped clips and is fixed with a nut.

[0028] The inner surface of the curved plate fits snugly against the outer surface of the high-pressure gas cylinder 2, providing better fit and stability. Two straight plates are connected by bolts, ensuring the U-shaped clips firmly secure the high-pressure gas cylinder 2. This design improves the fit and stability between the high-pressure gas cylinder 2 and the bracket 1, ensuring that the high-pressure gas cylinder 2 will not shift during operation.

[0029] Furthermore, multiple brackets 1 are provided; all of the brackets 1 are spaced apart along the body of the high-pressure gas cylinder 2.

[0030] In a preferred embodiment, multiple supports 1 are evenly spaced along the body of the high-pressure gas cylinder 2, which increases the stability of the supports 1 in fixing the gas cylinder. When the high-pressure gas cylinder 2 is long or heavy, the use of multiple supports 1 can better distribute the weight and external force of the high-pressure gas cylinder 2, ensuring that the connector 4 of the high-pressure gas cylinder 2 remains stable during tightening and avoiding improper operation due to changes in the position of the high-pressure gas cylinder 2.

[0031] 2. Wrench, two wrenches 3 are provided, which are used to tighten the connectors 4 at both ends of the high-pressure gas cylinder 2 respectively;

[0032] The wrench 3 is an important component of this invention, used to tighten the connector 4 of the high-pressure gas cylinder 2 using torque. Each wrench 3 is designed to match the size of the connector 4 of the high-pressure gas cylinder 2 and can provide sufficient force during operation to tighten the connector 4. Two wrenches 3 are used to fix the connectors 4 at both ends of the high-pressure gas cylinder 2.

[0033] 3. Bushing 5, one end of which is connected to one of the wrenches 3;

[0034] In one optional embodiment, a handle is provided on one side of the wrench 3; one end of the bushing 5 is fitted onto the handle of one of the wrenches 3.

[0035] The bushing 5 is used to increase the torsional torque applied to the connector 4 by increasing the lever arm. One end of the bushing 5 is connected to the handle of one of the wrenches 3, and by extending the lever arm, the applied torsional torque is increased, ensuring that the tightening operation can be completed. The length of the bushing 5 is adjusted according to the required torsional torque.

[0036] Furthermore, the bushing 5 is made of seamless steel pipe, and the inner diameter of the steel pipe matches the shaft handle of the wrench 3.

[0037] 4. Anti-rotation clamp 6, used to fix the other wrench 3;

[0038] The anti-rotation clamp 6 is provided with a slot for locking and fixing the shaft handle of another wrench 3.

[0039] The anti-rotation clamp 6 is used to fix the other wrench 3, ensuring that the high-pressure gas cylinder 2 will not rotate or move during tightening. It firmly engages the shaft of the wrench 3 through a slot, ensuring that when the connector 4 at one end of the high-pressure gas cylinder 2 is tightened, the other wrench 3 remains fixed, avoiding operational errors or rotation of the high-pressure gas cylinder 2.

[0040] 5. Wire lock 7, one end of which is connected to the other end of the bushing 5;

[0041] The wire lock 7 is a connecting component used to connect the bushing 5 to the crane scale 8.

[0042] 6. A hanging scale 8 is connected to the other end of the wire lock 7 and is used to display the force applied to the bushing 5;

[0043] The crane scale 8 is one of the key components of this invention, used to measure the traction force applied to the bushing 5 in real time. The connection between the crane scale 8 and the wire lock 7 provides a direct numerical value of the applied force, which the operator can use to adjust the traction force of the lifting device to ensure that the expected torsional torque is achieved.

[0044] 7. Lifting device 9, connected to the crane scale 8, used to apply traction force to the bushing 5.

[0045] The lifting device 9 is used to apply the actual traction force. The magnitude of the force is controlled by the feedback data from the crane scale 8 to ensure that the required torsional torque can be accurately achieved. This application of traction force is usually accomplished by equipment such as cranes and jacks. The magnitude of the traction force is adjusted according to the data from the crane scale 8 to ensure that the desired effect is achieved.

[0046] Furthermore, the traction force applied by the lifting device 9 to the bushing 5 is determined based on the torsional torque required by the connector 4 of the high-pressure gas cylinder 2 and the length of the bushing 5.

[0047] The specific formula is: Torsional torque = Force × Lever arm

[0048] Among them, the lever arm is the length of the bushing 5, the force is the traction force applied by the lifting device 9 to the bushing 5, the specific value is displayed by the crane scale 8, and the torsional torque is the torsional torque required to tighten the connector 4 of the high-pressure gas cylinder 2.

[0049] The beneficial effects of this utility model are:

[0050] This invention provides a simple and efficient tightening device for the 2-connector 4 of a high-pressure gas cylinder. Through a rational design, multiple components are effectively combined, allowing operators to easily tighten the 2-connector 4 of the high-pressure gas cylinder. Especially in emergency or on-site work environments, this device provides operators with a simple and safe tightening solution. Tightening the 2-connector 4 of a high-pressure gas cylinder requires applying a large torque; traditional manual methods or simple equipment often fail to guarantee accuracy and stability, thus posing safety hazards. With this device, operators can precisely control the applied torque, ensuring that the connector 4 is tightened under the specified torque, avoiding leakage or cylinder damage due to overtightening or loosening, greatly improving the safety of gas cylinder use. Furthermore, the design of this invention can automatically adjust the applied traction force according to the required torque of the 2-connector 4 of the high-pressure gas cylinder. Data is displayed in real time by the crane scale 8, allowing operators to quickly determine whether the required torque has been reached, thus avoiding the hassle of manual testing and repeated adjustments, greatly improving work efficiency and reducing working time. This device can not only quickly complete the tightening operation, but also accurately control the torsional torque, saving time and labor costs compared to traditional methods.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-pressure gas cylinder tightening device, characterized in that, include: A bracket is used to secure the body of a high-pressure gas cylinder. Two wrenches are provided, one for tightening the connectors at both ends of the high-pressure gas cylinder; A bushing, one end of which is connected to one of the wrenches; Anti-rotation clamp, used to secure another wrench; A wire lock buckle, one end of which is connected to the other end of the bushing; A crane scale, connected to the other end of the wire lock, is used to display the force applied to the bushing; A lifting device, connected to the crane scale, is used to apply traction force to the bushing.

2. The apparatus according to claim 1, characterized in that: The bracket includes: U-shaped clips and bolts; there are two U-shaped clips, one of which is clipped above the high-pressure gas cylinder and the other is clipped below the high-pressure gas cylinder; there are two bolts, one of which passes through one side of the two U-shaped clips and is tightened with a nut, and the other passes through the other side of the two U-shaped clips and is tightened with a nut, so as to fix the body of the high-pressure gas cylinder.

3. The apparatus according to claim 2, characterized in that: Multiple brackets are provided; all of the brackets are spaced apart along the body of the high-pressure gas cylinder.

4. The apparatus according to claim 2, characterized in that: The U-shaped card includes: a first connecting plate, a second connecting plate, and a third connecting plate connected in sequence; The first connecting plate and the third connecting plate are both straight plate structures; the second connecting plate is an arc-shaped plate structure; the inner surface of the second connecting plate is in contact with the outer surface of the high-pressure gas cylinder; the bolt is used to pass through the first connecting plate and the third connecting plate.

5. The apparatus according to claim 1, characterized in that: The wrench has a handle on one side; one end of the bushing is fitted onto the handle of one of the wrenches.

6. The apparatus according to claim 5, characterized in that: The anti-rotation clamp is provided with a slot for locking and fixing the shaft handle of another wrench.

7. The apparatus according to claim 1, characterized in that: The traction force applied by the lifting equipment to the bushing is determined based on the torsional torque required for the high-pressure gas cylinder joint and the length of the bushing.