A fire extinguisher lance tightening auxiliary device

Abstract

The utility model discloses a fire extinguisher spray gun tightening auxiliary device, including work table and install its fixed support rod, controller, motor, driving pulley and screwing assembly. The screwing assembly includes screwing bearing, the fixed support rod of bearing inner ring and the belt connecting ring of being located in the outer extension of inner ring, and the screwing support rod upper end is equipped with screwing slot, and the fixed support rod upper end is equipped with fixed slot. When working, the fire extinguisher spray pipe buckle is in the fixed support rod, and the spray gun buckle is in the screwing support rod, and the controller controls motor drive driving pulley, and rotates through the belt drive screwing bearing to complete the screwing fixed of spray gun. The utility model discloses a motor and belt drive realize mechanization screwing, utilize double support rod structure to ensure that the spray gun and spray pipe are centered and positioned, effectively avoid the damage of thread skew, improve the quality and assembly efficiency of connection, reduce the labor intensity, and have the advantages of compact structure, simple operation, high safety.

Description

Technical Field

[0001] This utility model relates to the field of screwing auxiliary tools, specifically a screwing auxiliary device for fire extinguisher spray guns. Background Technology

[0002] Fire extinguishers typically consist of three main parts: the tank, the nozzle, and the spray gun. The nozzle and spray gun are connected via a threaded interface. However, this connection still heavily relies on manual assembly, a traditional method with several drawbacks: First, manual operation is slow, time-consuming, and labor-intensive, directly hindering production capacity and increasing labor costs per unit. Second, the torque for manual tightening relies entirely on the operator's feel and experience, making precise control and standardization impossible. This leads to significant torque differences between products, and some connection points may be too loose. This inherently flawed connection, due to internal pressure, easily causes the spray gun to loosen, leak, or detach during use, severely affecting the spray distance and pattern of the extinguishing agent, ultimately weakening the fire extinguishing effect.

[0003] On the other hand, threaded connections with insufficient torque are at extremely high risk of loosening under the continuous vibration and bumps of long-distance transportation. This could not only result in the product arriving at the user's hands as a defective or scrap product, but also create a safety hazard that would render it unusable in emergency situations. Summary of the Invention

[0004] In view of the problems existing in the prior art, this utility model discloses a fire extinguisher nozzle tightening auxiliary device, and the technical solution adopted is as follows: A fire extinguisher nozzle tightening auxiliary device includes a workbench with a fixed support rod, a controller, a motor, a drive pulley, and a tightening assembly. The tightening assembly includes a tightening bearing, a tightening support rod fixed to the inner ring of the tightening bearing, and a belt connecting ring disposed on the outer edge of the inner ring of the tightening bearing. The upper end of the tightening support rod has a tightening groove, and the upper end of the fixed support rod has a fixing groove. During operation, the fire extinguisher nozzle is secured to the fixed support rod, and the fire extinguisher nozzle is secured to the tightening support rod. The controller controls the motor to drive the drive pulley to rotate, which in turn drives the tightening bearing to rotate, thus completing the tightening and fixing of the fire extinguisher nozzle.

[0005] In a preferred embodiment of this utility model, a control box is installed on the upper part of the workbench, the controller is located in the control box, and input / output devices are installed on the front side of the control box.

[0006] In a preferred embodiment of this utility model, a motor mounting plate is fixedly connected to the lower part of one end of the workbench, and a screw bearing mounting plate is fixedly connected to the upper part. The outer ring of the screw bearing is fixedly connected to the bearing mounting plate, and a motor is fixedly connected to the back of the motor mounting plate.

[0007] In a preferred embodiment of this invention, the fire extinguisher nozzle and the fire extinguisher hose are connected by a threaded connection. Rotating the inner ring of the bearing allows the fire extinguisher nozzle to rotate via the rotating support rod. The fire extinguisher hose is secured in the fixed slot and does not rotate, thus allowing the fire extinguisher nozzle to be screwed onto the threaded connector of the fire extinguisher hose.

[0008] As a preferred embodiment of this utility model, the input / output device is a human-computer interaction touch screen.

[0009] In a preferred embodiment of this invention, a protective cover is bolted to the outer side of the bearing mounting plate. The protective cover covers the outer perimeter of the belt, preventing operators from contacting the transmission components and improving the safety of equipment operation.

[0010] The beneficial effects of this invention are as follows: This invention uses a motor-driven mechanism combined with a belt drive to rotate the inner ring of the rotating bearing and the rotating support rod. By utilizing the cooperation between the rotating support rod and the fixed support rod, the spray gun and nozzle can be stably supported and accurately positioned. The motor then drives the fire extinguisher spray gun, which is positioned in the rotating slot, to rotate, completing the mechanized threaded connection between the spray gun and nozzle. This design significantly reduces the labor intensity of operators and improves the efficiency of assembly operations.

[0011] Meanwhile, this structure ensures that the spray gun and nozzle remain axially aligned throughout the tightening process, effectively preventing thread damage caused by misalignment and thus guaranteeing the sealing and reliability of the connection. The protective cover isolates the operator from contact with the transmission components, enhancing equipment safety. The control box provides precise control of the motor, enabling high-precision tightening between the spray gun and nozzle, and automatically stops when the preset torque value is reached. The entire device is compact, easy to operate, and possesses excellent practicality and potential for widespread adoption. Attached Figure Description

[0012] Figure 1 This is a first view showing the overall structure of the present invention; Figure 2 This is a second view illustrating the overall structure of this utility model; Figure 3 This is a schematic diagram of the screw bearing structure of this utility model. Figure 4 This is a schematic diagram showing the working state of the present invention when the fire extinguisher nozzle is assembled. Figure 5 This is a partial enlarged view of the present invention and the fire extinguisher spray gun.

[0013] In the diagram: 1. Workbench, 101. Motor mounting plate, 102. Bearing mounting plate, 2. Control box, 3. Motor, 4. Drive pulley, 5. Tightening bearing, 501. Belt connecting ring, 6. Belt, 7. Tightening support rod, 701. Tightening slot, 8. Fixed support rod, 801. Fixed slot, 9. Protective cover, 10. Fire extinguisher nozzle, 11. Fire extinguisher spray gun. Detailed Implementation Example 1

[0014] like Figures 1 to 5 As shown, this utility model provides a fire extinguisher nozzle tightening auxiliary device. The device includes a workbench 1, with a control box 2 mounted on top of the workbench 1. The control box 2 is based on a PLC controller and equipped with a human-machine interface touchscreen, facilitating parameter setting and monitoring of operating status by the operator. A motor mounting plate 101 is fixedly connected to the lower part of one end of the workbench 1, and a bearing mounting plate 102 is fixedly connected to the upper part. A motor 3 is fixedly mounted on the back of the motor mounting plate 101, and the motor 3 is electrically connected to the control box 2. The operator can set the target assembly torque via the touchscreen, and the PLC controller converts this torque value into precise speed control commands for the motor 3.

[0015] The output shaft of motor 3 passes through motor mounting plate 101 and is fixedly connected to drive pulley 4. A rotating bearing 5 is fixedly mounted in the center of bearing mounting plate 102 with an opening. The outer ring of rotating bearing 5 is fixed to bearing mounting plate 102, and a belt connecting ring 501 is fixedly connected to the outer edge of its inner ring. The belt connecting ring 501 and drive pulley 4 are connected via belt 6, enabling motor 3 to drive the inner ring of rotating bearing 5 to rotate. A protective cover 9 is bolted to the outer side of bearing mounting plate 102, covering the belt 6 and effectively isolating operators from transmission components, thus improving equipment operating safety.

[0016] A screw-on support rod 7 is fixedly connected radially to the inner side of the inner ring of the screw-on bearing 5. A screw-on slot 701 is provided at the upper end of the screw-on support rod 7. A fixed support rod 8 is also fixedly installed on the worktable 1, parallel to the screw-on support rod 7, and its upper end is provided with a fixed slot 801. Both the fire extinguisher nozzle 11 and the fire extinguisher pipe 10 are provided with hexagonal prism structures for clamping the clips. The screw-on slot 701 and the fixed slot 801 are designed as slot structures that match the hexagonal prisms, allowing the fire extinguisher nozzle 11 to be inserted into the screw-on slot 701 and the fire extinguisher pipe 10 to be inserted into the fixed slot 801.

[0017] During the assembly process, the operator first sets the target assembly torque value via the human-machine interface touchscreen integrated into the control box. The controller receives this parameter in real time and accurately converts it into the control speed of the motor through a built-in algorithm, providing a precise power reference for subsequent tightening operations.

[0018] After setting the parameters, the operator securely inserts the fire extinguisher nozzle into the fixing slot 801 at the top of the fixed support rod 8, and simultaneously inserts the fire extinguisher nozzle into the corresponding screw-in slot 701 at the upper end of the screw-in support rod 7, completing the thread pre-connection of the two. Then, the operator presses the start button on the control box, and the motor 3 drives the drive pulley 4 to rotate at the preset speed. Power is transmitted through the belt 6 to the belt connecting ring 501 of the screw-in bearing 5, causing its inner ring to rotate.

[0019] At this time, driven by the inner ring of the bearing, the screwing support rod 7, like a wrench, drives the fire extinguisher nozzle 11 to rotate at a constant speed around the axis. At the same time, the fire extinguisher nozzle 10 remains absolutely stationary under the constraint of the fixed slot 801. During the screwing process, both of them always maintain a high degree of overlap with the axis of the inner ring of the screwing bearing 5, effectively avoiding thread damage or poor sealing caused by misalignment.

[0020] As the tightening process continues, the threaded connection between the spray gun and the nozzle gradually tightens. When the actual tightening torque reaches the preset value, the controller automatically cuts off the motor power, and the tightening action stops precisely. The entire assembly process achieves fully mechanized operation from parameter setting, component positioning, automatic tightening to torque control.

[0021] This invention effectively replaces traditional manual operation with mechanized tightening, significantly improving assembly efficiency and consistency while reducing the labor intensity of operators. On the other hand, through precise torque control and centering design, it completely eliminates problems such as thread damage, air leakage, and loose connections caused by uneven tightening force or axial misalignment, ensuring the reliability and safety of fire extinguisher products during transportation and use, and systematically improving the overall assembly quality.

[0022] In the description of this utility model, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicating orientation or positional relationships, are based on the accompanying drawings and are for ease of description only, not to limit actual orientation. Furthermore, terms such as "first" and "second" are used only to distinguish descriptions and do not indicate importance or quantity limitations; "multiple" refers to two or more. Unless otherwise specified, the terms "installation," "connection," and "linking" should be interpreted broadly, including fixed connections, detachable connections, mechanical connections, electrical connections, direct connections, or indirect connections via an intermediate medium. Those skilled in the art can understand the actual meaning of the above terms in specific application scenarios.

[0023] The specific embodiments of this utility model have been described in detail above, but this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, any modifications or variations made without departing from the spirit of this utility model should still fall within the protection scope of this utility model.

Claims

1. A fire extinguisher nozzle tightening auxiliary device, comprising a workbench, characterized in that, The workbench is equipped with a fixed support rod, a controller, a motor, a drive pulley, and a screwing assembly. The screwing assembly includes a screwing bearing, a screwing support rod fixed to the inner ring of the screwing bearing, and a belt connecting ring. The belt connecting ring is located on the outer edge of the inner ring of the screwing bearing. The upper end of the screwing support rod has a screwing groove. The upper end of the fixed support rod has a fixing groove. During operation, the fire extinguisher nozzle is secured to the fixed support rod, and the fire extinguisher gun is secured to the screwing support rod. The controller controls the motor to drive the drive pulley to rotate, which in turn drives the screwing bearing to rotate via the belt, thus completing the screwing and fixing of the fire extinguisher gun.

2. The fire extinguisher nozzle tightening auxiliary device according to claim 1, characterized in that, A control box is installed on the upper part of the workbench, the controller is located in the control box, and input / output devices are installed on the front side of the control box.

3. The fire extinguisher nozzle tightening auxiliary device according to claim 1, characterized in that, A motor mounting plate is fixedly connected to the lower part of one end of the workbench, and a screw bearing mounting plate is fixedly connected to the upper part. The outer ring of the screw bearing is fixedly connected to the bearing mounting plate, and a motor is fixedly connected to the back of the motor mounting plate.

4. The fire extinguisher nozzle tightening auxiliary device according to claim 1, characterized in that, The fire extinguisher nozzle and the fire extinguisher spray pipe are connected by a thread.

5. The fire extinguisher nozzle tightening auxiliary device according to claim 2, characterized in that, The input / output device is a human-computer interaction touchscreen.

6. The fire extinguisher nozzle tightening auxiliary device according to claim 3, characterized in that, A protective cover is fixed to the outer side of the bearing mounting plate by bolts.

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