A folding arm balance structure
By designing a balanced structure on the folding arm of the fire truck, and adjusting the torque of the folding arm using the balanced arm, the balanced water tank and the automatic control system, the problem of overturning the folding arm of the fire truck is solved, the height and flexibility of fire rescue are improved, and the stability and safety of the equipment are ensured.
Patent Information
- Application Number
- CN202421316183.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-11
AI Technical Summary
The folding arms of the fire truck are prone to overturning accidents when they are extended and tilted, resulting in limited fire rescue height and point.
A balanced structure of the folding arm is designed, including a balanced arm disposed at the inner end of the folding arm, a balanced water tank and a first water pipe for adjusting the amount of water in the water tank. The inclination angle sensor detects the inclination angle and direction of the main arm, and automatically controls the water pump to inject or discharge water into or out of the balanced water tank, adjusts the torque of the folding arm, and ensures that the overall center of gravity is close to the main arm.
It effectively prevents the folding arms from falling during the fire rescue process, improves the height and point flexibility of fire rescue, and ensures the stability and safety of the fire truck.
Smart Images
Figure CN222723517U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engineering machinery, in particular to a folding arm balancing structure. Background Art
[0002] Fire trucks are a common firefighting and rescue equipment used for high-altitude firefighting and rescue. The main arm of current fire trucks is tilted and retractable. Since there is a horizontal distance between the parking place of the fire truck and the rescue point, the main arm needs to be extended to a certain height and tilted to a certain angle to reach the firefighting and rescue point. When the tilt angle is too large and the main arm is extended too long, the center of gravity of the main arm will deviate from the support position. This limits the height of firefighting and rescue, and the rescue point is also restricted. In order to increase the height of firefighting and rescue, a fire truck with a vertical main arm has emerged, and a folding arm is provided on the top of the main arm, which extends to the firefighting and rescue point. The firefighting and rescue height of this fire truck can be greatly increased, but since the folding arm is located on one side of the main arm, it is necessary to set a balancing mechanism at the end of the folding arm close to the main arm to balance the torque generated by the folding arm to prevent overturning accidents. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a folding arm balancing structure, which is used for balancing the moment generated by the folding arm of a fire truck to prevent overturning accidents.
[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:
[0005] A folding arm balancing structure comprises a balancing arm arranged at the inner end of the folding arm, a balancing water tank arranged on the balancing arm, and a first water pipe arranged on the balancing arm and used for filling water into the balancing water tank or discharging water in the balancing water tank.
[0006] Furthermore, the balancing water tank includes a tank top connected to the balancing arm and a retractable tank body fixedly connected to the tank top, the first water pipe is connected to the tank body, and a driving device for compressing or expanding the tank body is provided on the tank top.
[0007] Furthermore, the side walls of the box are corrugated, and the driving device includes a wire rope drum rotatably connected to the top of the box, a wire rope wound around the wire rope drum, and a first reduction motor fixedly connected to the top of the box and transmission connected to the wire rope drum, and one end of the wire rope away from the wire rope drum is fixedly connected to the bottom of the box.
[0008] Furthermore, a spiral second water pipe is provided inside the box body, one end of the second water pipe is connected to the first water pipe, and the other end is located at the bottom of the box body, and the second water pipe is elastic.
[0009] Furthermore, the top of the balancing water tank is rotatably connected to the balancing arm.
[0010] Furthermore, the balancing arm is provided with an adjusting device for adjusting the distance between the balancing water tank and the folding arm.
[0011] Furthermore, the balancing arm is slidably connected to the folding arm, and the adjusting device includes a rack fixedly connected to the balancing arm, a gear meshing with the rack, and a second reduction motor fixedly arranged on the folding arm, the gear is rotatably connected to the folding arm, the second reduction motor is fixedly connected to the folding arm, and the second reduction motor is transmission connected to the gear.
[0012] Furthermore, it also includes a controller and an inclination sensor. The first water pipe is provided with a water pump. The water pump and the inclination sensor are both electrically connected to the controller.
[0013] Furthermore, the first water pipe is a flexible hose or a rigid telescopic pipe.
[0014] The positive effects of the utility model are:
[0015] The utility model is provided with a retractable balancing arm, on which a balancing water tank is provided. The tilt direction of the main arm is detected by the inclination sensor on the main arm, and the torque of the folding arm is balanced by adjusting the amount of water in the balancing water tank, so that the overall center of gravity of the folding arm, the balancing water tank and the balancing arm is close to the main arm during fire rescue operations, thereby preventing overturning accidents. The stability of the main arm and the folding arm can be ensured by adjusting the amount of water in the balancing water tank and the extended length of the balancing arm. The balancing water tank can be compressed and folded, and the tilt angle and direction of the main arm are detected by the inclination sensor, so that the amount of water injected into the balancing water tank can be automatically controlled to ensure that the center of gravity of the entire folding arm is always at the connection between the folding arm and the main arm. When the fire truck is driving, the water in the balancing water tank can be pumped out, and the water tank can be folded and stowed to reduce the occupied space. Since the folding arm is retractable, that is, during the rescue process, the length of the folding arm can be lengthened or shortened. At any time when the folding arm is retracted, the water amount in the box and the length of the balancing arm can be adjusted to keep the entire folding arm balanced and will not fall over. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the utility model;
[0017] Figure 2 It is a schematic diagram of the connection between the utility model and the folding arm;
[0018] In the figure:
[0019] 2. Main arm; 3. Folding arm; 301. Folding arm main beam; 401. Water pump; 402. First water pipe; 403. Balance arm; 404. First reduction motor; 405. Commutator; 406. Wire rope drum; 407. Wire rope reel; 408. Second water pipe; 409. Box body; 410. Box top; 411. Second reduction motor; 412. Driving shaft; 413. Winch shaft. DETAILED DESCRIPTION
[0020] Example 1
[0021] like Figure 1 and Figure 2 As shown, a folding arm 3 is provided on one side of the vertical main arm 2 of the fire truck, and both sides of the bottom of the folding arm 3 are folding arm main beams 301.
[0022] A folding arm balancing structure includes a balancing arm 403 arranged at the inner end of each folding arm main beam 301 of the folding arm 3, a balancing water tank arranged between the outer ends of the two balancing arms 403, and a first water pipe 402 arranged on one of the balancing arms 403 for filling water into the balancing water tank or discharging water from the balancing water tank.
[0023] The balancing water tank includes a rectangular frame-shaped box top 410 and a box body 409 with a top located in the box top 410 and capable of being retracted up and down. The top of the box body 409 is fixedly connected to the top of the box top 410, and both sides of the box top 410 are rotatably connected to the corresponding balancing arms 403, respectively. The first water pipe 402 is in communication with the inside of the box body 409, and a driving device for compressing or unfolding the box body 409 is provided on the box top 410. After being compressed and folded, the box body 409 can be retracted into the box top 410.
[0024] The side walls of the box body 409 are corrugated, and the cross-section of the box body 409 is rectangular. The driving device includes a wire rope drum 406 rotatably connected to the box top 410, a wire rope wound around the wire rope drum 406, and a first reduction motor 404 fixedly connected to the box top 410 and transmission connected to the wire rope drum 406. The end of the wire rope away from the wire rope drum 406 is fixedly connected to the bottom of the box body 409.
[0025] The top of the box top 410 is rotatably connected to two mutually parallel hoisting shafts 407. There are four wire rope drums 406 near the four corners of the box top 410, and the four wire rope drums 406 are respectively fixedly connected to the corresponding hoisting shafts 407. The first reduction motor 404 is fixedly connected to one side of the box top 410. The output shaft of the first reduction motor 404 is hollow, and the output shaft is connected to the driving shaft 412 through a key. The side of the box top 410 is fixedly connected to the positions corresponding to the two ends of the driving shaft 412. The two ends of the driving shaft 412 are respectively connected to the corresponding hoisting shaft 407 through the corresponding commutator 405. The wire ropes on the drums 406 are respectively fixedly connected to the corresponding corners of the bottom of the box body 409. The wire ropes pass through the corresponding holes on the box top 410, and the wire ropes are all located outside the box body 409.
[0026] A spiral second water pipe 408 is disposed inside the box body 409 . One end of the second water pipe 408 is connected to the first water pipe 402 , and the other end is located at the bottom of the box body 409 . The second water pipe 408 is elastic.
[0027] The utility model is also provided with a controller, and a water pump 401 is provided on the first water pipe 402, and the water pump 401 is a bidirectional water pump, that is, the direction of the water flow in the first water pipe 402 is controlled by the steering of the water pump. A tilt sensor is provided on the top of the main arm 2, and the water pump 401, the tilt sensor and the first reduction motor 404 are all electrically connected to the controller.
[0028] The working process of the utility model is:
[0029] The tilt direction of the main arm 2 can be detected by the inclination sensor on the top of the main arm 2. When the main arm 2 tilts toward the folding arm 3, the controller controls the water pump 401 to run, and injects water into the box 409 through the first water pipe 402 and the second water pipe 408, so as to balance the torque of the folding arm 3, so that the overall center of gravity of the folding arm 3, the balancing water tank and the balancing arm 403 is close to the main arm 2 during firefighting and rescue operations, thereby preventing overturning accidents.
[0030] In addition, when the controller controls the operation of the first reduction motor 404, the box 409 can be compressed or expanded. After compression, the box 409 can reduce the occupied space. When the folding arm 3, the main arm 2 and the balance arm 403 are stored on the fire truck, it is convenient to arrange the balance water tank on the fire truck.
[0031] Example 2
[0032] This embodiment is further improved on the basis of embodiment 1:
[0033] The balancing arm 403 is provided with an adjusting device for adjusting the distance between the balancing water tank and the folding arm 3 .
[0034] Each balancing arm 403 is slidably connected to the corresponding folding arm beam 301, and the adjustment devices are two respectively arranged on the two folding arm beams 301. Each adjustment device includes a rack fixedly connected to the corresponding balancing arm 403, a gear meshing with the rack, and a second reduction motor 411 fixedly arranged on the folding arm 3, the gear is rotatably connected to the folding arm beam 301, the second reduction motor 411 is fixedly connected to the folding arm 3, and the second reduction motor 411 is transmission-connected to the gear through a coupling.
[0035] The first water pipe 402 is a rigid telescopic pipe. Specifically, the first water pipe 402 is composed of two nested pipes, one of which is fixedly connected to the balance arm 403, and the other is fixedly connected to the folding arm beam 301. The two pipes are sealed by a sealing ring, so as to compensate for the length change of the balance arm 403 extending out of the folding arm beam 301.
[0036] The second reduction motor 411 is electrically connected to the controller, and the controller controls the second reduction motor to adjust the length of the balance arm 403 extending out of the folding arm cross beam 301 according to the signal fed back by the inclination sensor, thereby further balancing the torque generated by the folding arm 3, so that the overall center of gravity of the folding arm 3, the balancing water tank and the balance arm 403 is as close as possible to the main arm 2 during firefighting and rescue operations to prevent overturning accidents.
[0037] In addition, after the balance arm 3 is folded, the occupied space can be reduced, making it easier to arrange it on the fire truck.
[0038] The above-mentioned embodiments describe content in a relatively detailed and specific manner, and express the preferred embodiments of the present utility model. They are only used to illustrate the technical ideas and features of the present utility model, and their purpose is to enable technicians in this field to understand the content of the present utility model and implement it accordingly, but they are not limited to the present utility model. The patent scope of the present utility model cannot be limited only by this embodiment, that is, any equivalent changes or modifications made to the spirit disclosed by the present utility model, for researchers or technicians in this field, without departing from the structure of the present utility model, local improvements within the system and changes and conversions between subsystems, etc., are still within the patent scope of the present utility model.
Claims
1. A folding arm balancing structure, characterized in that: It comprises a balancing arm (403) arranged at the inner end of the folding arm (3), a balancing water tank arranged on the balancing arm (403), and a first water pipe (402) arranged on the balancing arm (403) and used for injecting water into the balancing water tank or discharging water in the balancing water tank.
2. A folding arm balancing structure according to claim 1, characterized in that: The balancing water tank comprises a tank top (410) connected to a balancing arm (403) and a retractable tank body (409) fixedly connected to the tank top (410); the first water pipe (402) is in communication with the tank body (409); and a driving device for compressing or expanding the tank body (409) is provided on the tank top (410).
3. A folding arm balancing structure according to claim 2, characterized in that: The side wall of the box body (409) is corrugated, and the driving device comprises a wire rope drum (406) rotatably connected to the box top (410), a wire rope wound around the wire rope drum (406), and a first reduction motor (404) fixedly connected to the box top (410) and transmission-connected to the wire rope drum (406), and one end of the wire rope away from the wire rope drum (406) is fixedly connected to the bottom of the box body (409).
4. The folding arm balancing structure according to claim 2, characterized in that: A spiral second water pipe (408) is provided inside the box body (409); one end of the second water pipe (408) is connected to the first water pipe (402), and the other end is located at the bottom of the box body (409); the second water pipe (408) is elastic.
5. The folding arm balancing structure according to claim 1, characterized in that: The top of the balancing water tank is rotatably connected to the balancing arm (403).
6. The folding arm balancing structure according to claim 1, characterized in that: The balancing arm (403) is provided with an adjustment device for adjusting the distance between the balancing water tank and the folding arm (3).
7. The folding arm balancing structure according to claim 6, characterized in that: The balancing arm (403) is slidably connected to the folding arm (3); the adjustment device comprises a rack fixedly connected to the balancing arm (403), a gear meshing with the rack, and a second reduction motor (411) fixedly arranged on the folding arm (3); the gear is rotatably connected to the folding arm (3); the second reduction motor (411) is fixedly connected to the folding arm (3); and the second reduction motor (411) is transmission-connected to the gear.
8. The folding arm balancing structure according to claim 1, characterized in that: It also includes a controller and an inclination sensor. The first water pipe (402) is provided with a water pump (401). The water pump (401) and the inclination sensor are both electrically connected to the controller.
9. The folding arm balancing structure according to claim 6, characterized in that: The first water pipe (402) is a flexible hose or a rigid telescopic pipe.