CN212432524U - Cracked early warning device of electronic round of frame - Google Patents

Abstract

The utility model discloses a cracked early warning device of electronic round of frame belongs to electronic round of frame auxiliary device field, is that can't in time be early warning suggestion to electronic round of frame damage degree to current detection method and proposes, and early warning device includes: install the layer that triggers on the gear box inner wall, trigger the layer and be located the teeth of a cogwheel clearance fit on the gear box internal gear, trigger the layer and include first trigger layer, first trigger layer is massive calcium carbonate, when electronic round of frame takes place destructive deformation, the gear deflects to triggering the layer direction to produce with first trigger layer surface and grind, mix the powder in the lubricating oil after grinding, thereby change the pH value of lubricating oil. The utility model discloses the utilization sets up early warning device between gear box inner wall and gear, monitors the fracture condition of electronic round of frame through detecting the change of lubricating oil PH value.

Description

Cracked early warning device of electronic round of frame

The technical field is as follows:

the utility model belongs to the technical field of electronic round of frame auxiliary device, concretely relates to cracked early warning device of electronic round of frame.

Background art:

the dump truck is one of engineering mechanical equipment, and often needs to be combined and matched with engineering machinery such as an excavator, a loader, a belt conveyor and the like in open pit coal mine engineering. Because the road conditions around the coal mine are generally poor, the dump truck needs to run in bumpy road conditions for a long time, and the electric wheel frame serving as a bearing structural member is always in an impact load state. Although the design load of the electric wheel frame can theoretically take the impact load of a bumping working condition into consideration, the actual road condition of an open-pit coal mine is often worse than the ideal condition, so that the impact load borne by the frame is greatly increased, and a part of the electric wheel frame is subjected to destructive deformation and even breakage.

The electric wheel is used as a system for providing traction for the mine dump truck, and the electric wheel frame is connected with the truck body, the rim and the tire, transmits the traction and the support reaction generated by the tire and directly bears the internal and external loads of the electric wheel. The gear system is arranged in the frame and is relatively fixed with the frame, and the gear box is arranged on the outer sides of the frame and the gear and is fixed on the vehicle body. Due to the fact that other components surround the outside of the electric wheel frame after the electric wheel frame is loaded, cracks generated on the frame cannot be found through general routine inspection. The existing inspection method can only find the electric wheel with the broken frame, and can not predict the breakage or measure the damage degree.

The utility model has the following contents:

the utility model discloses a solve the defect that current detection method can't in time carry out the early warning suggestion to the damage degree of electronic round of frame, provide a cracked early warning device of electronic round of frame, through at current electronic turbine shelf location early warning device, utilize current electronic round conventional detection regulation, under the condition of not dismantling each part of the electric turbine outside, just can judge the damage degree of electronic round.

The utility model discloses a technical scheme lie in: an early warning device for breakage of a motorized wheel carrier, comprising: install the trigger layer on the gear box inner wall, trigger the layer and be located the teeth of a cogwheel clearance fit on the gear box internal gear, the trigger layer includes first trigger layer, first trigger layer is massive calcium carbonate, and when the destructive deformation takes place for electronic round of frame, the gear takes place to deflect to trigger the layer direction to produce with first trigger layer surface and grind, mix the powder in the lubricating oil through grinding the back, thereby change the pH value of lubricating oil.

Preferably, the gap is greater than 3.2 mm.

Preferably, the trigger layer further comprises a second trigger layer, the second trigger layer is positioned between the inner wall of the gear box and the first trigger layer, and the second trigger layer is composed of a solid compound capable of enabling the lubricating oil to be acidic.

Preferably, the second trigger layer is bulk silicon dioxide.

Preferably, the trigger layer further comprises a third trigger layer, the third trigger layer is positioned between the inner wall of the gear box and the second trigger layer, and the third trigger layer is composed of a solid compound capable of enabling the lubricating oil to be alkaline.

Preferably, the third trigger layer is bulk calcium carbonate.

Preferably, the triggering layer is mounted on the inner wall of the gear box through a bracket.

The utility model has the advantages that:

1. the utility model discloses the inner wall clearance that can make gear and gear box when utilizing electronic round of frame to warp reduces, takes place mutual interference's phenomenon even, sets up early warning device between gear box inner wall and gear, utilizes the tipper to regularly carry out the workflow that conventional detected to lubricating oil, monitors the fracture condition of electronic round of frame through detecting the change of lubricating oil PH value, realizes playing the effect of early warning to the damage of electronic round of frame not equidimension.

2. The utility model discloses a set up the multistage layer that triggers, can realize stage nature early warning suggestion, just can realize the early warning effect through the conventional detection to lubricating oil, for the early warning device of current sensor mode, the utility model has the characteristics of simple structure need not to reform transform current part, and the detection means is simple and convenient, monitors low cost, and the practicality is strong.

Description of the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of a trigger layer;

FIG. 4 is a state diagram of the gear and the trigger layer at different stages of deformation at the electric wheel frame;

FIG. 5 is an enlarged view of FIG. 4 at B;

wherein: the device comprises an electric wheel frame 1, a triggering layer 2, a gear 3, a gear box 4, a first triggering layer 5, a second triggering layer 6, a third triggering layer 7 and a support 8.

The specific implementation mode is as follows:

example 1

As shown in fig. 1 to 3, the utility model relates to a cracked early warning device of electronic round of frame, include: the trigger layer 2 is arranged on the inner wall of the gear box 4, the trigger layer 2 is in clearance fit with gear teeth on a gear 3 in the gear box 4, the clearance between the trigger layer 2 and the gear 3 of the dumper with different specifications is different, and the clearance is larger than 3.2 mm.

A groove for installing the trigger layer 2 is processed on the inner wall of the gear box 4, and the trigger layer 2 is installed on the inner wall of the gear box 4 through a bracket 8. The trigger layer 2 may also be fixed to the inner wall of the gear case 4 by other means such as adhesion, welding, etc.

The trigger layer 2 comprises a first trigger layer 5, and the first trigger layer 5 is composed of a solid compound capable of making lubricating oil alkaline, for example, the first trigger layer 5 is block-shaped calcium carbonate.

Under a normal design condition, the electric wheel frame 1 is always in an elastic deformation state and should not generate destructive deformation, the gear 3 installed in the electric wheel frame 1 also rotates along with the deflection of the electric wheel frame 1, and the gear 3 and the gear box 4 fixed on the dump truck always keep a reasonable gap without generating any interference, such as the position pointed by O in fig. 5.

As shown in fig. 4, a position F in the drawing is a position where the electric wheel frame 1 is broken, when the dump truck runs under a severe working condition for a long time, and when the electric wheel frame 1 is slightly deformed in a destructive manner (i.e., a first stage of deformation, such as a position pointed by a dotted line C in fig. 5), the deflection of the electric wheel frame 1 is increased, and because the degree of destructive deformation generated by the electric wheel frame 1 is small, the deflection angle of the gear 3 installed in the electric wheel frame 1 is also increased at the same time, so that the gear 3 gradually approaches the inner wall direction of the gear box 4, that is, the gear 3 deflects toward the trigger layer 2.

Since the gear 3 rotates at a high speed all the time during operation, the triggering layer 2 mounted inside the gear box 4 is triggered, the gear 3 is ground when it touches the surface of the first triggering layer 5, and the ground powder is mixed into the lubricating oil. When the lubricating oil is subjected to a conventional inspection procedure, because normal lubricating oil is weakly acidic, and the first trigger layer 5 is a solid compound which can make the lubricating oil be alkaline, when the electric wheel frame 1 is in a first deformation stage and the first trigger layer 5 is triggered, the pH value of the lubricating oil is changed, and the pH value test result is weakly alkaline. So when the oil is checked, if alkalinity is detected, it is indicated that the electric wheel frame 1 has been in the first stage of deformation.

Example 2

Embodiment 2 on the basis of embodiment 1, the triggering layer 2 further comprises a second triggering layer 6.

The second trigger layer 6 is mounted on the bracket 8 and located between the inner wall of the gear box 4 and the first trigger layer 5, and the second trigger layer 6 is composed of a solid compound capable of making lubricating oil acidic, for example, the second trigger layer 6 is massive silica.

Since the second trigger layer 6 is a solid compound capable of making the lubricating oil acidic, when the electric wheel frame 1 is in severe destructive plastic deformation (i.e. the second stage of deformation, as indicated by the dashed line D in fig. 5), the second trigger layer 6 is triggered, so that the PH value of the lubricating oil changes again.

Example 3

Embodiment 3 on the basis of embodiment 2, the trigger layer 2 further comprises a third trigger layer 7.

The third triggering layer 7 is mounted on the bracket 8 and located between the inner wall of the gear box 4 and the second triggering layer 6, and the third triggering layer 7 is composed of a solid compound capable of making lubricating oil alkaline, for example, the third triggering layer 7 is massive calcium carbonate.

Since the third triggering layer 7 is a solid compound capable of making the lubricating oil acidic, when the electric wheel frame 1 is in severe fracture deformation (i.e. the third stage of deformation, as indicated by the dotted line E in fig. 5), the third triggering layer 6 is triggered, so that the PH value of the lubricating oil changes again.

Example 4

A method for early warning and detecting breakage of an electric wheel rack adopts the early warning device in embodiment 3, and specifically comprises the following detection steps:

step 1: the PH value of the lubricating oil in the gear box 4 is sampled and tested for the first time, and as the PH value of the normal lubricating oil is faintly acid, if the detected PH value is the PH value of the normal lubricating oil, the use state of the electric wheel frame 1 is normal; if the PH of the lubricating oil is slightly alkaline, it indicates that the electric wheel frame 1 has been slightly deformed destructively, i.e. in the first stage of deformation, the first trigger layer 5 has been destroyed.

Step 2: after a period of time of the first conventional sampling and testing, performing second sampling and testing on the pH value of the lubricating oil in the gear box 4 again, wherein if the pH value of the lubricating oil is alkalescent, the electric wheel frame 1 is still in the first deformation stage; if the PH of the lubricating oil is again weakly acidic and the acidic PH is greater than the acidic PH of the lubricating oil itself, it indicates that the destructive deformation degree generated by the electric wheel frame 1 is further increased, that is, in the second stage of deformation, the second trigger layer 6 is destroyed.

And step 3: after a period of time of the second conventional sampling and testing, the third sampling and testing is carried out on the pH value of the lubricating oil in the gear box 4 again, if the pH value of the lubricating oil is still acidic, the destructive deformation degree generated by the electric wheel frame 1 is not further aggravated, and the electric wheel frame is still in the second deformation stage; if the PH value of the lubricating oil is weakly alkaline again, it indicates that the electric wheel frame 1 is seriously deformed in a breaking manner, that is, in the third stage of deformation, the third trigger layer 7 is damaged, and there is a serious potential safety hazard.

Further, the time interval between each routine sampling and testing is at least 250 hours. If the dump truck encounters an unexpected abnormal condition in the running process, temporary sampling and testing can be carried out.

The above description is only the preferred embodiments of the present invention, and these embodiments are all based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The utility model provides a cracked early warning device of electronic round of frame which characterized in that includes: install trigger layer (2) on gear box (4) inner wall, trigger layer (2) with be located the teeth of a cogwheel clearance fit on gear box (4) internal gear (3), trigger layer (2) including first trigger layer (5), first trigger layer (5) are massive calcium carbonate, and when electronic round of frame (1) takes place destructive deformation, gear (3) take place to deflect to trigger layer (2) direction to produce with first trigger layer (5) surface and grind, mix the powder in the lubricating oil after grinding, thereby change the pH value of lubricating oil.

2. The warning device for breakage of a motorized wheel carrier as claimed in claim 1, wherein: the gap is greater than 3.2 mm.

3. A breakage warning device for an electric wheel carrier according to claim 1 or 2, wherein: the trigger layer (2) further comprises a second trigger layer (6), the second trigger layer (6) is located between the inner wall of the gear box (4) and the first trigger layer (5), and the second trigger layer (6) is composed of solid compounds capable of enabling lubricating oil to be acidic.

4. A warning device of breakage of a motorized wheel carrier as claimed in claim 3, wherein: the second trigger layer (6) is bulk silicon dioxide.

5. The warning device for breakage of electric wheel carrier according to claim 4, wherein: the trigger layer (2) further comprises a third trigger layer (7), the third trigger layer (7) is located between the inner wall of the gear box (4) and the second trigger layer (6), and the third trigger layer (7) is composed of a solid compound capable of enabling lubricating oil to be alkaline.

6. The warning device for breakage of electric wheel carrier according to claim 5, wherein: the third trigger layer (7) is massive calcium carbonate.

7. The warning device for breakage of a motorized wheel carrier as claimed in claim 1, wherein: the trigger layer (2) is arranged on the inner wall of the gear box (4) through a bracket (8).

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