Tightening device for mounting pressure relief mechanism

Abstract

The utility model discloses a tightening device for installing a pressure relief mechanism, which comprises a driving motor and a fixed base, one end of the driving motor close to the fixed base is fixedly connected with a speed reducer, an inner groove is arranged in the fixed base, and one side of the inner groove close to the speed reducer is provided with a driving friction disc. The driving motor is in transmission connection with a driving friction disc through a speed reducer, and a driven friction disc is arranged on the side, away from the speed reducer, in the inner groove. The two friction discs which are separated at ordinary times are arranged and matched with the reset spring and the connector, after a workpiece is placed, the pressure relief mechanism can abut against the connector, and the connector is pressed downwards to make the upper friction disc and the lower friction disc make contact with each other; and then a bottom driving motor is connected through a key groove pin shaft to drive a lower driving friction disc and an upper driven friction disc to perform friction transmission, so that the connector rotates together, and the tightening work is completed.

Description

Technical Field

[0001] This utility model relates to the technical field of fire extinguisher production equipment, and in particular to a tightening device for installing a pressure relief mechanism. Background Technology

[0002] A fire extinguisher is a portable fire-fighting tool containing chemicals used to extinguish fires. It is one of the most common fire-fighting equipment, usually stored in public places or areas where fires may occur. Different types of fire extinguishers contain different components and are specifically designed for different causes of fire. However, regardless of whether it is a handheld, wheeled, backpack, or cylinder-type, pressurized, or chemical reaction type fire extinguisher, as long as it involves spraying its contents to extinguish the fire, it will have a specific function such as... Figure 3 Pressure relief mechanism.

[0003] In the existing production process of fire extinguisher pressure relief mechanisms, a threaded limiting workpiece is needed to install the spring workpiece into the extinguisher. Figure 2 The pressure relief mechanism shown requires pressing and tightening the workpiece. Existing tightening devices generally use pneumatic screwdrivers for tightening. However, when using them, one hand needs to hold the screwdriver while the other hand stabilizes the workpiece. After aligning and pressing, the valve is opened to tighten the workpiece. This is not only cumbersome to operate and inefficient, but the pneumatic screwdriver also generates a lot of noise when working, which seriously affects the working environment. There is room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a tightening device for installing a pressure relief mechanism, thereby solving the above-mentioned problem.

[0005] To achieve the above objectives, a tightening device for installing a pressure relief mechanism is provided, comprising a drive motor and a fixed base. A reducer is fixedly connected to one end of the drive motor near the fixed base. An inner groove is provided inside the fixed base. An active friction disc is provided inside the inner groove near the reducer. The drive motor is connected to the active friction disc via the reducer. A driven friction disc is provided inside the inner groove away from the reducer. A transmission column is fixedly connected to the center of the end of the driven friction disc away from the active friction disc. Rubber friction pads are fixedly connected to the opposite sides of both the active and driven friction discs. A spring groove is formed at the center of the end of the fixed base away from the drive motor. A connector is movably connected to the end of the spring groove away from the inner groove. A return spring is provided inside the spring groove on the outer side of the connector near the inner groove. A workpiece groove is formed at the center of the end of the connector away from the spring groove.

[0006] According to the aforementioned tightening device for installing a pressure relief mechanism, the end of the reducer away from the drive motor is fixedly connected to a fixed base.

[0007] According to the aforementioned tightening device for installing a pressure relief mechanism, the end of the connector away from the spring groove is fitted with a threaded workpiece through a workpiece groove.

[0008] According to the aforementioned tightening device for installing a pressure relief mechanism, a drive shaft is provided at the center of one end of the reducer near the fixed base, and the end of the drive shaft away from the reducer passes through the fixed base and is riveted to the keyway at the center of the active friction disc.

[0009] According to the aforementioned tightening device for installing a pressure relief mechanism, a connecting pin is provided at the center of the end of the transmission column away from the driven friction disc, and the connecting head is fixedly connected to the transmission column at the center of the end of the transmission column near the transmission column via the connecting pin.

[0010] According to the aforementioned tightening device for installing a pressure relief mechanism, the fixed base is fixedly connected to the workbench of the production line on the side near the drive motor.

[0011] The above solution has at least one of the following beneficial effects:

[0012] 1. This utility model is equipped with two normally separate friction discs. With the help of a return spring and a connector, after the workpiece is placed, the pressure relief mechanism presses against the connector, and the connector is pressed down to make the upper and lower friction discs come into contact with each other. Then, the bottom drive motor drives the lower active friction disc and the upper driven friction disc to perform friction transmission through the keyway pin shaft, so that the connector rotates together, thereby completing the tightening work. When the drive motor does not stop, the assembly personnel only need to place the workpiece and then press down to tighten the workpiece, which greatly simplifies the operation steps, improves production efficiency, and enhances the practicality of the device.

[0013] 2. Both friction discs of this utility model are equipped with rubber friction plates. When the active friction disc and the driven friction disc come into contact with each other for friction transmission, the rubber friction plates can not only increase the friction force of the contact surface, but also prevent the generation of noise. This makes the device almost noiseless during operation. Compared with pneumatic screw tightening machines, it greatly optimizes the working environment and enhances the practicality of the device.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1This is a schematic diagram of the internal structure of a tightening device for installing a pressure relief mechanism according to this utility model;

[0017] Figure 2 This is a schematic diagram of the pressure relief mechanism of this utility model;

[0018] Figure 3 This is a general drawing of a fire extinguisher valve body with a pressure relief mechanism.

[0019] Legend:

[0020] 1. Drive motor; 2. Fixed base; 3. Reducer; 4. Inner groove; 5. Active friction disc; 6. Driven friction disc; 7. Transmission column; 8. Rubber friction plate; 9. Spring groove; 10. Return spring; 11. Connector; 12. Workpiece groove; 13. Threaded workpiece; 14. Drive shaft; 15. Connecting pin. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-3 This utility model provides a tightening device for installing a pressure relief mechanism, including a drive motor 1 and a fixed base 2. The side of the fixed base 2 near the drive motor 1 is fixedly connected to the workbench of the production line. A reducer 3 is fixedly connected to one end of the drive motor 1 near the fixed base 2. The end of the reducer 3 away from the drive motor 1 is fixedly connected to the fixed base 2. An inner groove 4 is provided inside the fixed base 2. An active friction disc 5 is provided inside the inner groove 4 near the reducer 3. A drive shaft 14 is provided at the center of the end of the reducer 3 near the fixed base 2. The end of the drive shaft 14 away from the reducer 3 passes through the fixed base 2 and connects with the active friction disc. The center of the 5 is riveted with a keyway. The drive motor 1 is connected to the active friction disc 5 through the reducer 3. The driven friction disc 6 is provided on the side of the inner groove 4 away from the reducer 3. The center of the end of the driven friction disc 6 away from the active friction disc 5 is fixedly connected with a transmission column 7. The opposite sides of the active friction disc 5 and the driven friction disc 6 are fixedly connected with rubber friction plates 8. When the active friction disc 5 and the driven friction disc 6 come into contact with each other for friction transmission, the rubber friction plates 8 can not only increase the friction of the contact surface, but also prevent the generation of noise. The device is almost noiseless when it is running, which greatly optimizes the working environment compared with the pneumatic screw tightening machine.

[0023] A spring groove 9 is formed at the center of the end of the fixed base 2 away from the drive motor 1. A connector 11 is movably connected to the end of the spring groove 9 away from the inner groove 4. A return spring 10 is provided on the outer side of the connector 11 near the inner groove 4 inside the spring groove 9. A connecting pin 15 is provided at the center of the end of the transmission column 7 away from the driven friction disc 6. The connector 11 is fixedly connected to the transmission column 7 at the center of the end near the transmission column 7 via the connecting pin 15. A workpiece groove 12 is formed at the center of the end of the connector 11 away from the spring groove 9. A threaded workpiece 13 is embedded in the workpiece groove 12 at the end of the connector 11 away from the spring groove 9. During operation... The bottom active friction disc 5 is continuously rotated by the drive motor 1, while the upper driven friction disc 6 is kept separate from the active friction disc 5 by the return spring 10. After the workpiece is placed, the pressure relief mechanism presses down against the connector 11. After the connector 11 is pressed down, the upper and lower friction discs will come into contact with each other. Then, the bottom active friction disc 5 and the upper driven friction disc 6 will perform friction transmission, causing the connector 11 to rotate together, thereby completing the tightening work. When the drive motor 1 is not stopped, the assembly personnel only need to place the workpiece and then press down to tighten it, which greatly simplifies the operation steps and improves production efficiency.

[0024] Working Principle: The main body of this utility model is directly fixed on the workbench. The base 2 has two normally separate friction discs. The bottom active friction disc 5 is driven by the drive motor 1 and keeps rotating. The upper driven friction disc 6 is kept separate from the active friction disc 5 by the return spring 10. After the workpiece is placed, the pressure relief mechanism presses down against the connector 11. After the connector 11 is pressed down, the upper and lower friction discs will come into contact with each other. Then, the bottom active friction disc 5 and the upper driven friction disc 6 will perform friction transmission, causing the connector 11 to rotate together, thereby completing the tightening work. At the same time, the rubber friction plate 8 set between the two friction discs can not only increase the friction force of the contact surface when the active friction disc 5 and the driven friction disc 6 come into contact with each other and perform friction transmission, but also prevent noise generation. The device operates with almost no noise, which greatly optimizes the working environment compared with pneumatic screw tightening machines.

[0025] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A screwing device for pressure relief mechanism mounting, comprising a driving motor (1) and a fixed base (2), characterized in that: The driving motor (1) is fixedly connected with a speed reducer (3) near one end of a fixed base (2), the fixed base (2) is internally provided with an inner groove (4), the inner groove (4) is internally provided with a driving friction disc (5) near one side of the speed reducer (3), the driving motor (1) is drivingly connected with the driving friction disc (5) through the speed reducer (3), the inner groove (4) is internally provided with a driven friction disc (6) away from the speed reducer (3), the driven friction disc (6) is fixedly connected with a transmission column (7) at the center of one end away from the driving friction disc (5), the opposite sides of the driving friction disc (5) and the driven friction disc (6) are fixedly connected with rubber friction plates (8), the fixed base (2) is provided with a spring groove (9) at the center of one end away from the driving motor (1), the spring groove (9) is movably connected with a connecting head (11) at one end away from the inner groove (4), the spring groove (9) is internally provided with a return spring (10) at the outer side of one end of the connecting head (11) near the inner groove (4), the connecting head (11) is provided with a workpiece groove (12) at the center of one end away from the spring groove (9).

2. The pressure relief mechanism mounting screwing device according to claim 1, characterized in that, The speed reducer (3) is fixedly connected with the fixed base (2) away from the driving motor (1).

3. The device according to claim 1, wherein The connecting head (11) is embedded with a threaded workpiece (13) through the workpiece groove (12) away from the spring groove (9).

4. The device according to claim 1, wherein The speed reducer (3) is provided with a driving shaft (14) at the center of one end near the fixed base (2), the driving shaft (14) is riveted through the key groove at the center of the driving friction disc (5) away from the speed reducer (3).

5. The device according to claim 1, wherein The transmission column (7) is provided with a connecting pin (15) at the center of one end away from the driven friction disc (6), the connecting head (11) is fixedly connected with the transmission column (7) through the connecting pin (15) at the center of one end near the transmission column (7).

6. The device according to claim 1, wherein The fixed base (2) is fixedly connected with the workbench of the production line near one side of the driving motor (1).

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