Device for detecting abrasion degree of bucket teeth of electric shovel

Abstract

The utility model relates to an electric bucket tooth wear degree detection device comprising the following structures: a housing having a tetragonal structure, one side of which is provided with a hole for allowing a connecting rod to pass through; the other end of the connecting rod is fixedly connected with the output end of the hydraulic oil cylinder; one end of the spring is connected with the fixing block, the fixing block is fixed on the inner wall of the shell through a bolt, and the other end of the spring is connected with the pressing block; therefore, by adding the spring, the fixing plate and the pressing plate, the force applied to the pressing block by the bucket tooth and the displacement distance of the pressing block are detected by utilizing the displacement sensor and the force sensor, and the relationship between the force and the displacement is analyzed through the upper computer, so that the aim of quantitatively analyzing the abrasion degree of the bucket tooth is fulfilled; and the detection precision of the wear condition of the bucket teeth of the electric bucket is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bucket tooth wear detection, in particular to a device for detecting the wear degree of an electric shovel bucket tooth. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] Electric shovel, also known as rope shovel, cable shovel, that is, mechanical electric excavator, is used for mining operations in open-pit coal mines. During the mining operation, the bucket teeth of the electric shovel bucket will directly contact with ore and other materials. Due to the large reaction force, the bucket teeth will wear faster. If the wear degree of the bucket teeth cannot be accurately judged and replaced in time, it will often cause the bucket teeth to break, affecting work efficiency. The existing bucket tooth wear detection device, such as the patent with patent number CN116067817A, discloses a bucket tooth wear test device, which judges the wear degree of the bucket teeth by analyzing the bucket tooth image data, and cannot realize the quantitative detection of the bucket tooth wear degree. In addition, the image processing process relies on various calculation models, and the processing process is complicated. Utility Model Content

[0004] The utility model aims to provide a device for detecting the degree of wear of bucket teeth of an electric shovel, comprising:

[0005] The shell is a cubic structure, and a hole is opened on one side of the shell to accommodate the connection rod to pass through;

[0006] A connecting rod, one end of which is fixedly connected to the bucket tooth, and the other end of which is fixedly connected to the output end of the hydraulic cylinder;

[0007] A spring, one end of which is connected to a fixed block, which is fixed to the inner wall of the housing by bolts; the other end of the spring is connected to a pressing block, and under the drive of a hydraulic pump and a hydraulic cylinder, the bucket teeth on the connecting rod apply pressure to the pressing block;

[0008] As a further technical solution, the size of the shell opening matches the size of the bucket teeth and the connecting rod.

[0009] As a further technical solution, the connecting rod is fixedly connected to the bucket tooth via a tooth seat.

[0010] As a further technical solution, the hydraulic cylinder is driven by a hydraulic pump, thereby driving the connecting rod to move into the housing.

[0011] As a further technical solution, the material of the spring is silicon manganese spring steel.

[0012] As a further technical solution, both the fixing block and the pressing block are provided with bosses, and the bosses are sleeved with springs.

[0013] As a further technical solution, the pressing block is also provided with a rectangular groove for fixing the bucket teeth.

[0014] As a further technical solution, a displacement sensor and a force sensor are fixed on the pressing block.

[0015] As a further technical solution, the position of the shell opening is on the same straight line as the positions of the fixing block, the spring and the pressing block.

[0016] As a further technical solution, the detection device further includes a host computer, which is communicatively connected with the displacement sensor and the force sensor.

[0017] Beneficial effects of one or more of the above technical solutions:

[0018] (1) The electric shovel bucket tooth wear degree detection device provided by the utility model has a simple structure and low cost. By adding a spring, a fixing plate and a pressing plate, the force applied by the bucket tooth on the pressing block is reflected by the displacement distance of the pressing block. The force applied by the bucket tooth on the pressing block and the displacement distance of the pressing block are detected by a displacement sensor and a force sensor. The relationship between force and displacement is analyzed by a host computer, thereby achieving the purpose of quantitatively analyzing the wear degree of the bucket tooth and effectively improving the detection accuracy of the electric shovel bucket tooth wear.

[0019] (2) The use of a hydraulic pump and a hydraulic cylinder to drive the bucket teeth on the connecting rod can ensure that the force applied to the bucket teeth during the test is close to the force of the bucket teeth under normal working conditions.

[0020] (3) The relationship curve between the force and displacement of the bucket teeth to be tested and the unworn bucket teeth is analyzed by the host computer only, without the need for various data processing models. The processing process is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present application, are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute a limitation on the present application.

[0022] Figure 1 It is an overall schematic diagram of the device of the utility model.

[0023] In the figure, 1 is a housing; 2 is a fixing plate; 3 is a pressing plate; 4 is a spring; 5 is a displacement sensor; 6 is a force sensor; 7 is a boss; 8 is a connecting rod; 9 is a bucket tooth; 10 is a tooth seat; 11 is a hydraulic cylinder; 12 is a hydraulic pump; 13 is an upper computer DETAILED DESCRIPTION

[0024] The following is combined with Figure 1 , describing the specific implementation of this embodiment.

[0025] The present application provides a device for detecting the degree of wear of bucket teeth of an electric shovel, referring to Figure 1 A device for detecting the wear degree of bucket teeth of an electric shovel comprises: a shell 1, a connecting rod 8, and a spring 4. The shell 1 is a cubic structure, and a hole is opened on one side of the shell 1 to accommodate the passage of the connecting rod 8. The size of the hole opened on the shell 1 matches the size of the bucket tooth 9 and the connecting rod 8, so that the bucket tooth 9 and the connecting rod 8 can pass through the shell during the test.

[0026] A tooth holder 10 is fixed to one end of the connecting rod 8, and the bucket tooth is fixed to the connecting rod through the tooth holder 10. The connection through the tooth holder 10 can effectively fix the bucket tooth 9 on the one hand, and can simulate the normal working state of the bucket tooth 9 on the other hand. The other end of the tooth holder 10 is fixedly connected to the output end of the hydraulic cylinder 11; the hydraulic cylinder 11 is driven by the hydraulic pump 12, thereby driving the connecting rod 8 and the bucket tooth 9 to pass through the opening position on the housing 1, and finally making the bucket tooth 9 contact with the pressing block 3. The method of driving the hydraulic cylinder 11 by the hydraulic pump 12 can ensure that the force provided to the bucket tooth 9 during the detection process is close to the force provided to the bucket tooth 9 during the normal working process.

[0027] In this embodiment, due to the wear of the bucket teeth, the contact area between the bucket teeth and the object is reduced. Under the same force, the distance that the spring 4 is compressed is different. Therefore, in this embodiment, the force applied by the bucket teeth 9 on the pressing block 3 is also collected by the force sensor, and the moving distance of the pressing block is collected by the displacement sensor. The upper computer 13 is used to establish a relationship curve between force and displacement, and the wear degree of the bucket teeth 9 is quantitatively analyzed according to the slope change rate. In normal use, when the bucket teeth 9 are worn by more than 30%, the stress on the positive direction of the bucket teeth surface increases, resulting in an increase in the friction force on the bucket teeth, and the phenomenon of being unable to dig will occur. Therefore, in this embodiment, the threshold value of the slope change rate is set to 30% according to the above situation.

[0028] Specifically, a fixing block 2 is fixed on the inner wall of the shell corresponding to the opening side of the shell 1 by bolts, and the fixing block 2 is used to bear the force applied by the bucket tooth 9 during the test. A boss 7 is also provided in the middle of the fixing block 2, and the spring 4 is sleeved on the boss 7 and fixed to the fixing block 2. The other end of the spring 7 is fixedly connected to the pressing block 3. The bottom of the pressing block 3 is also provided with a boss 7, and the spring 4 is also sleeved on the boss 7 of the pressing block. By sleeved the spring 4 on the boss 7 of the fixing block 2 and the pressing block 3, the stability of the spring 4 can be greatly improved, and it is not easy to shake during the compression of the spring 4. In addition, a rectangular groove is also provided on the surface of the pressing block 3. During the detection process, the bucket tooth 9 is placed in the rectangular groove, which can prevent the bucket tooth 9 from sliding off when too much pressure is applied, and in order to ensure that the bucket tooth 9 can be smoothly placed in the rectangular groove of the pressing block 3 during the movement, the position of the opening of the shell 1 is on the same straight line as the positions of the fixing block 2, the spring 4 and the pressing block 3. In order to effectively bear the force exerted by the bucket tooth 9 on the pressing block 3, the spring 4 is made of a high-strength material, such as silicon-manganese spring steel.

[0029] In addition, in order to collect the pressure applied by the bucket tooth 9, a force sensor 6 is provided on the pressing block 3 to sense the force applied by the bucket tooth 9 on the pressing block; secondly, a displacement sensor 5 is also provided on the pressing block 3 to detect the moving distance of the pressing block 3; wherein the displacement sensor 5 and the force sensor 6 transmit the collected data to the host computer 13, and a relationship curve between force and displacement is established through the host computer 13, and a standard relationship curve between force and displacement of an unworn bucket tooth 9 is also pre-stored in the host computer 13 , the upper computer 13 is used to calculate the slope change rate of the two relationship curves (the slope change rate is the ratio of the difference between the slope of the bucket tooth relationship curve to be detected and the slope of the unworn bucket tooth relationship curve to the slope of the bucket tooth relationship curve to be detected). When the slope change rate of the two relationship curves is between 0% and 10%, it indicates that the bucket tooth 9 is slightly worn; when the slope change rate is between 10% and 20%, it can be considered that the bucket tooth 9 is moderately worn; when the slope change rate is between 20% and 30%, it indicates that the bucket tooth 9 is heavily worn and the bucket tooth 9 needs to be replaced in time.

[0030] Working principle:

[0031] (1) The bucket tooth 9 to be tested is fixed on the connecting rod 8 through the tooth seat 11, and the hydraulic pump 12 is used to drive the hydraulic cylinder 11 to move, thereby driving the connecting rod 8 from the opening position of the shell 1 into the interior of the shell 1, so that the bucket tooth 9 contacts the rectangular groove on the pressing block 3.

[0032] (2) Driven by the hydraulic pump 12 and the hydraulic cylinder 11, the bucket tooth 9 contacts the rectangular groove on the pressing block 3. The force sensor 6 and the displacement sensor 5 located on the pressing block 3 detect the pressure applied by the bucket tooth 9 and the displacement distance of the pressing block 3 during the pressure application process. The upper computer 13 is used to establish a relationship curve between the force and displacement of the pressing block 3, and the relationship curve is compared with the standard relationship curve between the force and displacement of the unworn bucket tooth pre-stored in the upper computer 13 to obtain the slope change rate, and the quantitative analysis of the bucket tooth wear degree is achieved based on the slope change rate.

[0033] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A device for detecting the degree of wear of bucket teeth of an electric shovel, characterized in that: include: The shell is a cubic structure, and a hole is opened on one side of the shell to accommodate the connection rod to pass through; A connecting rod, one end of which is fixedly connected to the bucket tooth, and the other end of which is fixedly connected to the output end of the hydraulic cylinder; A spring, one end of which is connected to a fixed block, which is fixed to the inner wall of the shell by bolts; the other end of the spring is connected to a pressing block, and under the drive of a hydraulic pump and a hydraulic cylinder, the bucket teeth on the connecting rod apply pressure to the pressing block.

2. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The size of the shell opening matches the size of the bucket teeth and the connecting rod.

3. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The connecting rod is fixedly connected to the bucket teeth through a tooth seat.

4. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The hydraulic cylinder is driven by a hydraulic pump, thereby driving the connecting rod to move into the housing.

5. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The material of the spring is silicon-manganese spring steel.

6. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The fixing block and the pressing block are both provided with bosses, and the bosses are sleeved with springs.

7. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The pressing block is also provided with a rectangular groove for fixing the bucket teeth.

8. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: A displacement sensor and a force sensor are fixed on the pressing block.

9. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: The position of the shell opening is on the same straight line as the positions of the fixing block, the spring and the pressing block.

10. The device for detecting the degree of wear of bucket teeth of an electric shovel as claimed in claim 1, characterized in that: It also includes a host computer, which is communicatively connected with the displacement sensor and the force sensor.

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