Device for monitoring stress condition of boom plate chain of elevating fire truck

Abstract

The utility model discloses an elevating fire truck boom plate chain stress condition monitoring device which comprises two plate chains and a boom, and the two plate chains are connected to a mounting table of the boom. Lengthened locking screws are arranged on the upper portions of the two plate chains, the two lengthened locking screws are connected with a plate chain stress condition detector, the plate chain stress condition detector is located on the mounting table through the two lengthened locking screws, and the upper portions of the two lengthened locking screws are in threaded connection with locking adjusting nuts. The plate chain stress condition detector is fixed on the mounting table through the cooperation of the locking adjusting nut and the lengthened locking screw rod; the plate chain stress condition detector is electrically connected with the vehicle-mounted controller, and the vehicle-mounted controller is electrically connected with the vehicle-mounted audible and visual alarm and the vehicle-mounted display screen. According to the utility model, the stress condition of the two plate chains can be monitored in real time, the stress difference of the two plate chains can be synchronously detected, and the tension of the two plate chains can be synchronously adjusted to the same value by locking the adjusting nuts, so that the service life of the plate chains can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of equipment for fire fighting truck, specifically relates to a kind of arm support plate chain stress monitoring device of height raising fire fighting truck. BACKGROUND

[0002] In prior art, telescopic oil cylinder is configured in height raising fire fighting truck, and arm support is controlled by telescoping in combination with plate chain or steel wire rope, but whether it is plate chain or steel wire rope, after long time of use, loosening condition can be generated, leading to the condition of partial load of the upper arm support load of fire fighting truck;Further, it leads to uneven force of steel wire rope and plate chain, and affects service life of steel wire rope and plate chain.However, it is difficult to distinguish whether plate chain needs to be readjusted and tightened by naked eye, and although there are multiple schemes for detecting whether plate chain is loosened in disclosed prior art, they are only for detecting single plate chain or a set of plate chain, and the detection scheme involved is complex, and is not suitable for actual use. CONTENT OF UTILITY MODEL

[0003] The utility model is just for the above problems, make up the deficiency of prior art, provide a kind of arm support plate chain stress monitoring device of height raising fire fighting truck.

[0004] To achieve the above object, the utility model adopts the following technical scheme.

[0005] The utility model provides a kind of arm support plate chain stress monitoring device of height raising fire fighting truck, including two plate chains, arm support, two plate chains are parallel and symmetrically connected on the mounting table of arm support;

[0006] The upper portion of the two plate chains connected with the arm support mounting table is provided with lengthened locking screw, and the two lengthened locking screws are connected with plate chain stress detector, the plate chain stress detector is located on the mounting table of arm support through the two lengthened locking screws, and the upper portion of the two lengthened locking screws is threadedly connected with locking adjusting nut, and the plate chain stress detector is fixed on the mounting table of arm support by the cooperation of locking adjusting nut and lengthened locking screw;

[0007] Further include vehicle-mounted controller, vehicle-mounted sound and light alarm, vehicle-mounted display screen, the plate chain stress detector is electrically connected with vehicle-mounted controller, and the vehicle-mounted controller is electrically connected with vehicle-mounted sound and light alarm and vehicle-mounted display screen respectively.

[0008] Further, the plate chain stress detector includes two columnar pressure sensors, a sensor mounting base for bearing the two columnar pressure sensors, and the two columnar pressure sensors are fixedly installed on the mounting table of arm support by the cooperation of sensor mounting base, lengthened locking screw and locking adjusting nut.

[0009] Further, the columnar pressure sensor is provided with a signal transmission line, a center connecting through hole, an inner ring connecting through hole and an outer ring connecting through hole, the center connecting through hole is uniformly provided with the inner ring connecting through hole, and the inner ring connecting through hole is uniformly provided with the outer ring connecting through hole; the center connecting through hole of the columnar pressure sensor is used for being connected through an elongated locking screw, the inner ring connecting through hole of the columnar pressure sensor is used for being connected through an inner ring rivet, the outer ring connecting through hole of the columnar pressure sensor is used for being connected through an outer ring rivet, and the columnar pressure sensor is fixedly connected with the sensor mounting base through the inner ring rivet and the outer ring rivet.

[0010] Further, the locking adjusting nut and the columnar pressure sensor are provided with a sensor protection pad plate, and the sensor protection pad plate is fixed between the columnar pressure sensor and the inner ring rivet.

[0011] Further, the bottom surface of the sensor mounting base in contact with the mounting table of the arm support is provided as an arc surface.

[0012] Further, the locking adjusting nut is provided with double nuts and a gasket, and the gasket is clamped between the double nuts.

[0013] Further, the vehicle-mounted controller is an electronic control unit (ECU), and the vehicle-mounted controller is connected with the signal transmission line of the columnar pressure sensor.

[0014] The utility model discloses beneficial effects:

[0015] The utility model provides a kind of high-lift fire truck arm support plate chain stress monitoring device, by using two columnar pressure sensors real-time monitoring the stress of two plate chains, according to the stress display on vehicle-mounted display screen, the stress difference of two plate chains can be detected synchronously, then can be through vehicle-mounted sound and light alarm prompt operation maintenance personnel in time, operation maintenance personnel can adjust the tension of two plate chains to the same value synchronously by locking adjusting nut, so it can prolong the service life of plate chain, better improve the use condition of plate chain. DRAWINGS

[0016] Fig. 1 It is the structure schematic view of the plate chain stress detector of the utility model high-lift fire truck arm support plate chain stress monitoring device combined with plate chain and installed with arm support.

[0017] Fig. 2 It is the circuit connection structure schematic diagram of the utility model high-lift fire truck arm support plate chain stress monitoring device.

[0018] Fig. 3 It is the structure schematic view of the columnar sensor of the utility model high-lift fire truck arm support plate chain stress monitoring device.

[0019] Fig. 4It is the structure schematic view two of the column type sensor of the arm support plate chain stress monitoring device of the high-lifting fire fighting truck.

[0020] Marked in the figure: 1 is a plate chain, 2 is an arm support, 3 is a signal transmission line, 4 is a column type pressure sensor, 5 is a gasket, 6 is a lengthened locking screw, 7 is a locking adjusting nut, 8 is an inner ring rivet, 9 is an outer ring rivet, 10 is a sensor installation base, 11 is an installation table, 12 is a vehicle-mounted controller, 13 is a vehicle-mounted sound and light alarm, 14 is a vehicle-mounted display screen, 15 is an outer ring connecting through hole, 16 is an inner ring connecting through hole, 17 is a center connecting through hole, 18 is a sensor protection gasket, 19 is an arc surface. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly and clearly, the utility model is further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not used to limit the utility model.

[0022] In combination with Figs. 1 to 4 As shown in the figure, the utility model embodiment provides a kind of arm support plate chain stress monitoring device of high-lifting fire fighting truck, including two plate chains 1, arm support 2, two plate chains 1 are parallel and symmetrically connected on the installation table 11 of arm support 2;With the upper portion of two plate chains 1 of the installation table 11 of arm support 2 installation is provided with lengthened locking screw 6, two lengthened locking screws 6 are connected with plate chain stress condition detector, the plate chain stress condition detector is located on the installation table 11 of arm support 2 by two lengthened locking screws 6, the upper portion of two lengthened locking screws 6 is all screw thread connection with locking adjusting nut 7, plate chain stress condition detector is fixed on the installation table 11 of arm support 2 by the cooperation of locking adjusting nut 7 and lengthened locking screw 6;Still include vehicle-mounted controller 12, vehicle-mounted sound and light alarm 13, vehicle-mounted display screen 14, the plate chain stress condition detector is electrically connected with vehicle-mounted controller 12, the vehicle-mounted controller 12 is electrically connected with vehicle-mounted sound and light alarm 13, vehicle-mounted display screen 14 respectively.

[0023] As preferred embodiment of the utility model, the plate chain stress condition detector includes two column type pressure sensors 4, a sensor installation base 10 for bearing two column type pressure sensors 4, two column type pressure sensors 4 are fixedly installed on the installation table 11 of arm support 2 by the cooperation of sensor installation base 10, lengthened locking screw 6 and locking adjusting nut 7.

[0024] As the preferred embodiment of the utility model, the bottom surface of the sensor mounting base 10 in contact with the mounting table 11 of the arm support 2 is arranged as an arc surface 19; the arc surface 19 arranged on the bottom surface of the sensor mounting base 10 serves to reduce the local stress concentration of the sensor mounting base 10 and can be installed in adaptation with the plate chain 1 and the arm support 2, and has the shockproof effect.

[0025] As the preferred embodiment of the utility model, the column type pressure sensor 4 is provided with a signal transmission line 3, a center connecting through hole 17, an inner ring connecting through hole 16 and an outer ring connecting through hole 15, a plurality of inner ring connecting through holes 16 are uniformly arranged on the periphery of the center connecting through hole 17, and a plurality of outer ring connecting through holes 15 are uniformly arranged on the periphery of the inner ring connecting through hole 16; the center connecting through hole 17 of the column type pressure sensor 4 is used for the passing of the lengthening locking screw 6, the inner ring connecting through hole of the column type pressure sensor 4 is used for the passing of the inner ring rivet 8, and the outer ring connecting through hole 15 of the column type pressure sensor 4 is used for the passing of the outer ring rivet 9; the column type pressure sensor 4 is fixedly connected with the sensor mounting base 10 through the inner ring rivet 8 and the outer ring rivet 9.

[0026] As the preferred embodiment of the utility model, the locking adjusting nut 7 and the column type pressure sensor are provided with a sensor protection gasket plate 18, the periphery of the sensor protection gasket plate 18 is fixed between the column type pressure sensor 4 and the inner ring rivet 8; wherein the locking adjusting nut 7 is provided with a double nut and a gasket 5, and the gasket 5 is clamped between the double nuts.

[0027] As the preferred embodiment of the utility model, the vehicle-mounted controller 12 is an electronic control unit ECU, and the vehicle-mounted controller 12 is connected with the signal transmission line 3 of the column type pressure sensor 4.

[0028] Specifically, two plate chains 1 are installed on the arm 2 of the aerial ladder truck, and uneven force will exist in the plate chains 1 during the extension and retraction of the arm 2; the utility model discloses two columnar pressure sensors 4 are installed independently and monitor the force of the two plate chains 1 in real time, and according to different force conditions, the operating and maintaining personnel can adjust the locking adjusting nuts 7 in real time and synchronously, so that the tension of the plate chains 1 is consistent, the force of the two plate chains 1 can be balanced maximally by this method, and the service life of the plate chains 1 is prolonged. In addition, the utility model discloses the force monitoring of the steel wire rope or other medium similar to the plate chains 1 used by the aerial ladder truck can achieve the same use effect, the force values of the two columnar pressure sensors 4 can be displayed on the vehicle-mounted display screen 14 in real time, the columnar pressure sensors 4 transmit data to the vehicle-mounted controller 12 in real time, when the vehicle-mounted controller 12 detects that the tension difference of the two plate chains 1 is greater than the preset standard value B, the vehicle-mounted display screen 14 displays; if the data of any one columnar pressure sensor 4 is less than the preset pressure value A, the vehicle-mounted sound and light alarm 13 alarms and flashes, so as to remind the operating and maintaining personnel to tighten or adjust the locking adjusting nuts 7 on the plate chain 1 lengthening locking screw rod 6 in time. In summary, the utility model discloses the force of the two plate chains 1 can be monitored in real time during the extension and retraction of the arm 2, and the real-time force display of the two plate chains 1 can be directly reflected.

[0029] It can be understood that the above specific description of the utility model is only used for describing the utility model and is not limited to the technical scheme described in the utility model embodiment, and those skilled in the art should understand that the utility model can still be modified or replaced equivalently to achieve the same technical effect; as long as the use needs are met, it is within the protection scope of the utility model.

Claims

1. A monitoring device for stress conditions of a boom plate chain of an aerial platform, comprising two plate chains and a boom, the two plate chains being connected in parallel and symmetrically to a mounting table of the boom; characterized in that: Two elongated locking screw rods are arranged on the two plate chains at the connection with the mounting table of the arm support, and the two elongated locking screw rods are connected with a plate chain stress condition detector, the plate chain stress condition detector is located on the mounting table of the arm support through the two elongated locking screw rods, the upper portions of the two elongated locking screw rods are both threadedly connected with a locking adjusting nut, and the plate chain stress condition detector is fixed on the mounting table of the arm support through cooperation of the locking adjusting nut and the elongated locking screw rod; the vehicle-mounted controller, the vehicle-mounted sound and light alarm and the vehicle-mounted display screen are further included, the plate chain stress condition detector is electrically connected with the vehicle-mounted controller, and the vehicle-mounted controller is electrically connected with the vehicle-mounted sound and light alarm and the vehicle-mounted display screen.

2. The boom plate chain stress monitoring device of claim 1, wherein: The plate chain stress condition detector comprises two columnar pressure sensors and a sensor mounting base for bearing the two columnar pressure sensors, and the two columnar pressure sensors are fixedly installed on the mounting table of the arm support through cooperation of the sensor mounting base, the elongated locking screw rod and the locking adjusting nut.

3. The monitoring device for the stress condition of the boom plate chain of the aerial platform according to claim 2, characterized in that: The columnar pressure sensor is provided with a signal transmission line, a center connecting through hole, an inner ring connecting through hole and an outer ring connecting through hole, the center connecting through hole is uniformly provided with the inner ring connecting through hole around the periphery, and the outer ring connecting through hole is uniformly provided around the periphery of the inner ring connecting through hole; the center connecting through hole of the columnar pressure sensor is used for passing through the elongated locking screw rod, the inner ring connecting through hole of the columnar pressure sensor is used for passing through the inner ring rivet, the outer ring connecting through hole of the columnar pressure sensor is used for passing through the outer ring rivet, and the columnar pressure sensor is fixedly connected with the sensor mounting base through the inner ring rivet and the outer ring rivet.

4. The monitoring device for the stress condition of the boom plate chain of the aerial platform according to claim 3, characterized in that: A sensor protection pad plate is arranged between the locking adjusting nut and the columnar pressure sensor, and the sensor protection pad plate is fixed between the columnar pressure sensor and the sensor mounting base through the inner ring rivet around the periphery.

5. The monitoring device for the stress condition of the boom plate chain of the aerial platform according to claim 2, characterized in that: The bottom surface of the sensor mounting base in contact with the mounting table of the arm support is arranged as an arc surface.

6. The boom plate chain stress monitoring device of claim 1, wherein: The locking adjusting nut is provided with double nuts and a gasket, and the gasket is clamped between the double nuts.

Images