Device for testing vibration resistance of fire extinguisher
By designing a fire extinguisher vibration resistance testing device with a multi-directional track and transmission system, the problems of low testing accuracy and efficiency in the existing technology have been solved, and the multi-directional vibration test has been completed efficiently, meeting the national standard requirements.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-03
AI Technical Summary
Existing technologies for testing the vibration resistance of fire extinguishers are not accurate and efficient, and cannot meet the requirements of national standards for multi-directional vibration testing.
A fire extinguisher vibration resistance testing device was designed. By setting tracks in three directions—horizontal, lateral, and vertical—on the base, and using a transmission system of a dual-output shaft motor and a one-way bearing, the fire extinguisher can switch between the horizontal and vertical turntables, thus achieving reciprocating motion of the fire extinguisher in three directions.
This technology enables fire extinguishers to undergo multi-directional vibration testing on a single test bench, improving testing accuracy and efficiency and meeting national standard testing requirements.
Smart Images
Figure CN223966235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire protection equipment inspection and testing, and specifically discloses a fire extinguisher vibration resistance testing device. Background Technology
[0002] National standard GB 4351—2023 stipulates that portable fire extinguishers must undergo vibration resistance testing. After the vibration resistance test, the fire extinguisher and its components should not detach, crack, or show significant deformation. The effective spray time, spray lag time, residual spray rate, and spray distance of the fire extinguisher should meet relevant requirements. According to the national standard, during the vibration resistance test, the fire extinguisher should be fixed upright in the clamp of the vibration table. The vibration direction of the vibration table should be changed sequentially, so that the fire extinguisher vibrates along three linear axes: horizontal, lateral, and vertical. The vibration test in each direction is conducted with three parameters: frequency 40Hz, amplitude (0.25±0.03)mm, and duration 2h. Currently, there is no dedicated vibration table that meets the relevant requirements. Instead, fire extinguishers are indirectly tested by installing them on other modified devices. For example, they are installed on a vertical spring fatigue testing table for vertical vibration testing, or on a horizontal vibrating screen for a horizontal test. After a horizontal test, the fire extinguisher is rotated and re-clamped before another horizontal test is conducted. The testing accuracy and efficiency are not ideal. Utility Model Content
[0003] To address the aforementioned problems, this utility model discloses a fire extinguisher vibration resistance testing device, which can solve the problems of low testing accuracy and low testing efficiency in the prior art.
[0004] A fire extinguisher vibration resistance testing device includes a base, a drive mechanism installed at the middle position above the base, a horizontal turntable that can rotate in a horizontal plane connected above the drive mechanism, a transverse reciprocating motion mechanism driven to the right side of the horizontal turntable, a lateral reciprocating motion mechanism driven to the front side of the horizontal turntable, and a vertical reciprocating motion mechanism provided on the left side of the horizontal turntable. The vertical reciprocating motion mechanism is driven to the drive mechanism.
[0005] Preferably, the drive mechanism includes a dual-output-shaft motor, the upper output shaft of which is connected to a horizontal turntable via a first one-way bearing, and the lower output shaft of which is connected to a vertical reciprocating motion mechanism via a second one-way bearing.
[0006] Preferably, the horizontal turntable is rotatably connected to a horizontal connecting rod, and a fire extinguisher clamp is connected to the end of the horizontal connecting rod away from the horizontal turntable. A transverse track is provided above the base and on the right side of the horizontal turntable, and a lateral track is provided above the base and on the front side of the horizontal turntable. The fire extinguisher clamp is slidably connected to the transverse track or the lateral track.
[0007] Preferably, three sets of clamping blocks for clamping the fire extinguisher are evenly arranged above the fire extinguisher clamp, and a telescopic guide block is slidably connected to the lower part of the fire extinguisher clamp, and a transverse drive rod is contacted and connected to the upper end of the telescopic guide block.
[0008] Preferably, the upper end of the telescopic guide block is a first slope, one end of the transverse drive rod is provided with a second slope that cooperates with the first slope, and the other end of the transverse drive rod protrudes outward from the side of the fire extinguisher clamp.
[0009] Preferably, the transverse drive rod includes a propulsion part that engages with the first ramp and a rotating part that engages with the fire extinguisher clamp threadedly, wherein the propulsion part and the rotating part are rotatably connected.
[0010] Preferably, a return spring is provided between the telescopic guide block and the fire extinguisher clamp.
[0011] Preferably, the vertical reciprocating motion mechanism includes a vertical turntable that can rotate in a vertical plane. The vertical turntable is connected to the lower output shaft of a dual-output-shaft motor, and the upper part of the vertical turntable is connected to a vertically moving vibration table via a vertical connecting rod.
[0012] Preferably, the vertical turntable is connected to a bevel gear assembly, which is connected to the lower output shaft of the dual-output-shaft motor via a second one-way bearing.
[0013] Preferably, a vertical track is provided above the base, and the vertical turntable is slidably connected to the vertical track.
[0014] Beneficial effects
[0015] This invention features tracks in three directions—horizontal, lateral, and vertical—set on the base. Through the switching of forward and reverse motion of a dual-shaft motor and the transmission of a one-way bearing, the movement of the horizontal and vertical turntables can be switched, enabling the fire extinguisher to reciprocate in three directions. This allows a single test bench to meet the testing requirements for the vibration resistance performance of the fire extinguisher. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model under lateral test conditions;
[0018] Figure 2 This is a schematic diagram of the structure of this utility model under lateral test conditions;
[0019] Figure 3 This is a schematic diagram of the structure of this utility model under vertical testing conditions. Figure 1 ;
[0020] Figure 4 This is a schematic diagram of the structure of this utility model under vertical testing conditions. Figure 2 ;
[0021] Figure 5 This is a schematic diagram of a fire extinguisher clamp structure. Figure 1 ;
[0022] Figure 6 This is a schematic diagram of a fire extinguisher clamp structure. Figure 2 ;
[0023] In the diagram, 1. Base, 2. First column, 3. Horizontal track, 4. Fire extinguisher clamp, 5. Clamping block, 6. Fire extinguisher, 7. Horizontal connecting rod, 8. Horizontal turntable, 9. Vertical turntable, 10. Vibration table, 11. Vertical track, 12. Lateral track, 13. Second column, 14. Bevel gear assembly, 15. Dual-shaft motor, 16. Vertical motion guide block, 17. Vertical connecting rod, 18. Rotating part, 19. Nut, 20. Propulsion part, 21. Telescopic guide block, 22. Return spring. Detailed Implementation
[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0025] like Figure 1-6As shown, this utility model discloses a fire extinguisher vibration resistance testing device. The device includes a base 1, with a drive mechanism installed at the center of the upper part of the base 1. A first column 2 is installed on the right side of the base 1, and a horizontal transverse track 3 is installed above the first column 2. A second column 13 is installed on the front side of the base 1, and a horizontal longitudinal lateral track 12 is installed above the second column. A vertically arranged vertical track 11 is installed on the left side of the base. The drive mechanism includes a dual-output shaft motor 15. The upper output shaft of the dual-output shaft motor 15 is connected to a horizontal turntable 8 via a first one-way bearing, and the lower output shaft of the dual-output shaft motor 15 is connected to a vertical rotating shaft via a second one-way bearing. The first and second one-way bearings move in opposite directions. The one-way bearing is essentially an overrunning clutch, which transmits driving force in only one direction, while acting as a regular bearing in the other direction. A first bevel gear rotating in the horizontal plane is mounted on a vertical rotating shaft. The first bevel gear meshes with a second bevel gear rotating in the vertical plane. The second bevel gear is mounted outside the horizontal rotating shaft. The first and second bevel gears combine to form a bevel gear assembly 14. This bevel gear assembly 14 converts the power of the lower output shaft of the dual-output shaft motor 15 from rotation in the horizontal plane to rotation in the vertical plane of the horizontal rotating shaft. A vertical turntable 9 is coaxially connected to the other end of the horizontal rotating shaft. A vertical connecting rod 17 is rotatably connected to the outer end face of the vertical turntable 9. A vertically moving vibration table 10 is rotatably connected above the vertical connecting rod 17.
[0026] A pin is mounted on the upper surface of the horizontal turntable 8, which is rotatably connected to a horizontal connecting rod 7. The other end of the horizontal connecting rod 7 is rotatably connected to the side of the fire extinguisher clamp 4. Three sets of clamping blocks 5 for clamping the fire extinguisher are evenly arranged above the fire extinguisher clamp 4. The lower end of each clamping block 5 is threadedly connected to a turntable, which is installed inside the fire extinguisher clamp 4. The turntable can be rotated by a drive wrench, which in turn drives the clamping blocks 5 to move on the surface of the fire extinguisher clamp through threaded transmission. When the three clamping blocks come closer to each other, the fire extinguisher is clamped. This structure and principle are the same as those of a three-jaw chuck, and will not be described in detail here.
[0027] A telescopic guide block 21 is slidably connected to the lower part of the fire extinguisher clamp 4. The side of the telescopic guide block 21 has a protrusion. A return spring 22 is installed inside the fire extinguisher clamp 4, with its upper end in tight contact with the protrusion. A first ramp is provided at the upper end of the telescopic guide block 21, and a second ramp is provided at the left end of the propulsion part 20. The two ramps contact each other to form a horizontal and vertical propulsion structure. The left end of the rotating part 18 passes into the through hole at the right end of the propulsion part 20 and is locked with a nut, allowing the rotating part 18 to rotate within the propulsion part 20. The fire extinguisher clamp has a threaded hole, which the rotating part 18 engages with.
[0028] When testing is required, the fire extinguisher 6 is fixed to the fire extinguisher clamp 4 by clamping block 5, and the telescopic guide block 21 below the fire extinguisher clamp 4 is inserted into the guide groove of the transverse track 3. At this time, the telescopic guide block 21 below the fire extinguisher clamp 4 is positioned as follows: Figure 6 The state is shown. When the dual-output shaft motor is started, it rotates forward, driving the horizontal turntable 8 to rotate via the first one-way bearing. Under the action of the second one-way bearing, the bevel gear assembly 14 does not move. The horizontal turntable 8, through the transmission action of the horizontal connecting rod 7 and the guiding action of the telescopic guide block 21 and the transverse track 3, drives the fire extinguisher clamp 4 to perform a linear reciprocating motion along the transverse track 3. If the fire extinguisher clamp 4 is inserted into the lateral track 12 via the telescopic guide block 21, the horizontal turntable 8 drives the fire extinguisher clamp 4 to perform a linear reciprocating motion along the lateral track 12. If the fire extinguisher clamp 4 is installed on the upper surface of the vibration table 10 with two screws, and the connection between the horizontal connecting rod 7 and the horizontal turntable 8 is released, the telescopic guide block 21 below the fire extinguisher clamp 4 is located as shown. Figure 5 The state shown is as follows. At this time, the dual-output shaft motor 15 starts in reverse. In the reverse rotation state, the horizontal turntable 8 does not move. Under the transmission action of the second one-way bearing and the bevel gear combination 14, it drives the vertical turntable 9 to rotate. Through the transmission of the vertical connecting rod 17 and the guiding action of the vertical motion guide block 16 on the side of the vibration table 10 and the guide groove of the vertical track 11, the vibration table 10 is driven to move vertically back and forth in the vertical plane, thereby driving the fire extinguisher 6 to move vertically back and forth.
[0029] This invention enables a single testing device to complete vibration testing of a fire extinguisher in three directions, making the testing process convenient and efficient.
[0030] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A device for testing the vibration resistance of fire extinguishers, characterized in that, The base is provided with a driving mechanism in the middle position above the base, a horizontal turntable connected above the driving mechanism and capable of rotating in a horizontal plane, a transverse reciprocating mechanism connected to the right side of the horizontal turntable, a lateral reciprocating mechanism connected to the front side of the horizontal turntable, and a vertical reciprocating mechanism provided on the left side of the horizontal turntable and in transmission connection with the driving mechanism.
2. The vibration resistance testing device for fire extinguisher according to claim 1, wherein The driving mechanism comprises a double-output-shaft motor, an upper output shaft of the double-output-shaft motor is connected with the horizontal turntable through a first one-way bearing, and a lower output shaft of the double-output-shaft motor is connected with the vertical reciprocating mechanism through a second one-way bearing.
3. A device for testing the anti-vibration performance of a fire extinguisher according to claim 2, wherein The horizontal turntable is rotationally connected with a horizontal connecting rod, one end of the horizontal connecting rod away from the horizontal turntable is connected with a fire extinguisher clamp, a transverse rail is provided above the base and on the right side of the horizontal turntable, a lateral rail is provided above the base and on the front side of the horizontal turntable, and the fire extinguisher clamp is in sliding connection with the transverse rail or the lateral rail.
4. The vibration resistance testing device for fire extinguisher according to claim 3, wherein Three groups of clamping blocks for clamping the fire extinguisher are uniformly arranged above the fire extinguisher clamp, a telescopic guide block is in sliding connection with the lower part of the fire extinguisher clamp, and a horizontal driving rod is in contact connection with the upper end of the telescopic guide block.
5. A device for testing the anti-vibration performance of a fire extinguisher according to claim 4, wherein The upper end of the telescopic guide block is a first slope, one end of the horizontal driving rod is provided with a second slope matched with the first slope, and the other end of the horizontal driving rod protrudes outward from the side surface of the fire extinguisher clamp.
6. A device for testing the anti-vibration performance of a fire extinguisher according to claim 5, wherein The horizontal driving rod comprises a propelling portion matched with the first slope and a rotating portion matched with the fire extinguisher clamp in screw connection, and the propelling portion is in rotational connection with the rotating portion.
7. The vibration resistance testing device for fire extinguisher according to claim 4, wherein A return spring is arranged between the telescopic guide block and the fire extinguisher clamp.
8. The vibration resistance testing device for fire extinguisher according to claim 1, wherein The vertical reciprocating mechanism comprises a vertical turntable capable of rotating in a vertical plane, the vertical turntable is connected with the lower output shaft of the double-output-shaft motor, and the upper part of the vertical turntable is connected with a vertically moving vibration table through a vertical connecting rod.
9. A device for testing the anti-vibration performance of a fire extinguisher according to claim 8, wherein The vertical turntable is connected with a bevel gear combination, the bevel gear combination is connected with the lower output shaft of the double-output-shaft motor through the second one-way bearing.
10. The vibration resistance testing device for fire extinguisher according to claim 8, wherein A vertical rail is provided above the base, and the vertical turntable is in sliding connection with the vertical rail.