A cutting force data acquisition device for cutting teeth

Abstract

This invention belongs to the field of cutting force data acquisition technology for cutting teeth, specifically a cutting force data acquisition device for cutting teeth. It includes a tooth base with an inner conical hole in the center; a tooth sleeve comprising: a lower cone, which is interference-fitted into the inner conical hole, with a groove on the outer surface of the lower cone for fixing a triaxial strain gauge; an upper clamping platform connected to the top of the lower cone and clamped to the outside of the inner conical hole of the tooth base; a short cutting tooth mounted on the upper clamping platform; and a wireless data acquisition device for acquiring data from the triaxial strain gauge. The shape of this invention is completely identical to existing cutting tooth sleeves, allowing for seamless interchangeability.

Description

Technical Field

[0001] This invention belongs to the field of cutting force data acquisition technology for cutting teeth, specifically a cutting force data acquisition device for cutting teeth. Background Technology

[0002] The cutting mechanism is a key component of underground mining and tunneling equipment, and the cutting teeth are the main cutting tools of the cutting mechanism. They are characterized by high wear resistance and high hardness, enabling economical cutting of coal and rock underground. For a long time, the rock-breaking mechanism of cutting teeth has been mainly studied through data sampling and analysis on experimental platforms. However, this method has certain limitations and is theoretically constrained by the limitations of experimental level and conditions. Directly placing experimental equipment on the constantly moving, rotating, and rock-breaking cutting mechanism is obviously impractical. This invention provides a cutting force data acquisition device for cutting teeth. By specially designing the cutting teeth and tooth sleeve, with the tooth sleeve housing a built-in wireless data acquisition device, it achieves real-time data acquisition of the cutting force of the cutting teeth, providing the most realistic cutting data under different cutting conditions for understanding the rock-breaking mechanism. Summary of the Invention

[0003] In order to realize real-time data acquisition of the cutting force of the cutting teeth and provide the most realistic cutting data under different cutting conditions for the cutting and rock breaking mechanism, this invention provides a cutting force data acquisition device for cutting teeth.

[0004] This invention adopts the following technical solution: a cutting force data acquisition device for cutting teeth, comprising:

[0005] The tooth holder has an inner conical hole in the middle.

[0006] Gear sleeve, the gear sleeve comprising:

[0007] The lower cone is installed in the inner conical hole with an interference fit. A groove is arranged on the outer circular surface of the middle part of the lower cone to fix the triaxial strain gauge.

[0008] The upper locking platform is connected to the top of the lower cone and is locked onto the outside of the inner conical hole of the tooth seat.

[0009] Short cutting teeth, which are mounted on the upper mounting plate;

[0010] A wireless data acquisition device that acquires data from triaxial strain gauges.

[0011] An inner hole I is provided in the lower cone, and a wire hole is provided on the groove to connect the inner hole I. The data line of the triaxial strain gauge enters the inner hole I through the wire hole.

[0012] The wireless data collector is installed in the inner hole I and is sealed and fixed by the end cap.

[0013] An inner hole II is provided in the upper clamping platform, and the short cutting teeth are installed in the inner hole II by means of a retaining ring.

[0014] When it is necessary to collect data on the cutting vibration of mining equipment, one or two cutting teeth on the cutting mechanism are replaced with cutting force data acquisition devices. When the mining equipment is working, the vibration experienced by the cutting teeth is transmitted to the triaxial strain gauge. The triaxial strain gauge transmits the vibration simulation signal to the wireless data acquisition device through the data cable. The wireless data acquisition device converts the analog signal into a digital signal and stores it inside. After the mining equipment finishes working, the wireless data acquisition device is taken out and the data is imported into the analysis equipment, thereby realizing the analysis of the vibration of the cutting teeth of the mining equipment. Alternatively, the vibration data in the wireless data acquisition device can be received in real time using a wireless data receiving device.

[0015] Compared with existing technologies, this invention solves the problem of difficult data acquisition during actual cutting in mining equipment by designing a special cutting force data acquisition device for a cutting tooth. The device is identical in appearance to existing cutting tooth sleeves and can be interchanged without difference. According to functional requirements, the device is designed with short cutting teeth, a triaxial strain gauge attached to the middle of the outer cylindrical surface of the sleeve, and a cylindrical data acquisition device arranged in the inner hole of the sleeve. It can realize the most realistic data acquisition during the operation of mining equipment, which is of great significance to the study of rock breaking mechanism of cutting teeth. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the tooth sleeve structure of the present invention;

[0018] In the figure, 1-short cutting tooth, 2-tooth sleeve, 3-clamp ring, 4-strain gauge, 5-tooth seat, 6-wireless data acquisition device, 7-end cap, 201-groove, 202-wire hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figure 1 As shown, a cutting force data acquisition device for cutting teeth includes:

[0021] Tooth seat 5, wherein an inner conical hole is provided in the middle of the tooth seat 5;

[0022] Gear sleeve 2, see Figure 2 The toothed sleeve 2 includes:

[0023] The lower cone 205 is installed in the inner conical hole with an interference fit. A groove 201 is arranged on the outer circular surface of the middle part of the lower cone 205 for fixing the triaxial strain gauge 4.

[0024] The upper locking platform 206 is connected to the top of the lower cone 205 and is locked on the outside of the inner conical hole of the tooth seat 5.

[0025] Short cutting tooth 1, the short cutting tooth 1 is mounted on the upper clamping platform 206;

[0026] Wireless data acquisition device 6, which acquires data from triaxial strain gauge 4.

[0027] An inner hole I203 is provided in the lower cone 205, and a wire hole 202 is provided on the groove 201 to connect the inner hole I203. The data line of the triaxial strain gauge 4 enters the inner hole I203 through the wire hole 202.

[0028] The wireless data collector 6 is installed in the inner hole I203 and is sealed and fixed by the end cover 7.

[0029] An inner hole II204 is provided inside the upper clamping platform 206, and the short cutting tooth 1 is installed in the inner hole II204 through the clamping ring 3.

[0030] Specifically, the gear seat 5 is the main fixing device of the entire assembly, and its flat end can be welded to the cutting drum of the mining and excavation equipment to form a fixed position. The gear sleeve 2 forms a tight fit with the inner conical hole of the gear seat 5 through the interference fit of the lower outer conical surface. A groove 201 is arranged at a preferred position on the middle outer circular surface of the gear sleeve 2, based on simulation calculations. Two wire holes 202 are evenly distributed on the groove 201. Two triaxial strain gauges 4 are welded on the groove 201 corresponding to the wire holes 202. The data lines of the triaxial strain gauges 4 enter through the wire holes 202. The short cutting tooth 1 is inserted into the inner hole of the sleeve 2. The upper part of the inner hole of the sleeve 2 forms a clearance fit with the cutting tooth 1, and the short cutting tooth 1 is fixed by the built-in retaining ring 3 to prevent the short cutting tooth 1 from moving axially. The short cutting tooth 1 has a short tooth shank, which leaves enough space for the wireless data acquisition device 6. The cylindrical wireless data acquisition device 6 is inserted into the lower part of the inner hole of the sleeve 2. One end of the wireless data acquisition device 6 is connected to the data line of the triaxial strain gauge 4, and the other end is sealed and fixed by the end cap 7. The wireless data acquisition device 6 has its own power supply and can record the triaxial axial load of the cutting tooth in real time.

[0031] Triaxial strain gauges 4 are arranged on the outer circular surface of the tooth sleeve 2, which can more realistically reflect the stress situation when the cutting tooth is cutting.

[0032] When it is necessary to collect data on the cutting vibration of the mining equipment, one or two cutting teeth on the cutting mechanism are replaced with cutting force data acquisition devices. When the mining equipment is working, the vibration of the cutting tooth 1 is transmitted to the triaxial strain gauge 4. The triaxial strain gauge 4 transmits the vibration simulation signal to the wireless data acquisition device 6 through the data cable 8. The wireless data acquisition device 6 converts the analog signal into a digital signal and stores it inside. After the mining equipment finishes working, the wireless data acquisition device 6 is taken out and the data is imported into the analysis equipment, thereby realizing the vibration analysis of the cutting teeth of the mining equipment, or the vibration data in the wireless data acquisition device can be received in real time using a wireless data receiving device.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pick force data collection device, comprising: include: Tooth seat (5), wherein an inner conical hole is provided in the middle of the tooth seat (5); Gear sleeve (2), the gear sleeve (2) comprising: The lower cone (205) is installed in the inner conical hole with an interference fit. A groove (201) is arranged on the outer circular surface of the middle part of the lower cone (205) for fixing the triaxial strain gauge (4). Two wire holes (202) are evenly distributed on the groove (201). Two triaxial strain gauges (4) are welded on the groove (201) corresponding to the wire holes (202). The triaxial strain gauges (4) are arranged on the outer circular surface of the tooth sleeve (2) to more realistically reflect the stress situation when the cutting tooth is cutting. An inner hole I (203) is provided in the lower cone (205), and a wire hole (202) is provided on the groove (201) to connect the inner hole I (203). The data line of the triaxial strain gauge (4) enters the inner hole I (203) through the wire hole (202). The upper locking platform (206) is connected to the top of the lower cone (205) and is locked on the outside of the inner conical hole of the tooth seat (5); An inner hole II (204) is provided in the upper clamping platform (206). The short cutting tooth (1) is installed in the inner hole II (204) by means of a retaining ring (3). The short cutting tooth (1) is fixed by the inner retaining ring (3) to prevent the short cutting tooth (1) from moving axially. Short cutting tooth (1) is installed on the upper card plate (206). The short cutting tooth (1) is a short tooth shank, which leaves enough space for the wireless data collector (6). The wireless data acquisition device (6) collects data from the triaxial strain gauge (4). The wireless data acquisition device (6) is set in the inner hole I (203) and is closed and fixed by the end cover (7). The wireless data acquisition device (6) has its own power supply and can record the triaxial load of the cutting tooth in real time.

2. The pick force data acquisition device of claim 1, wherein, When it is necessary to collect the cutting vibration status of the mining equipment, one or two cutting teeth on the cutting mechanism are replaced with cutting force data acquisition devices. When the mining equipment is working, the vibration of the short cutting tooth (1) is transmitted to the triaxial strain gauge (4). The triaxial strain gauge (4) transmits the vibration simulation signal to the wireless data acquisition device (6) through the data line (8). The wireless data acquisition device (6) converts the analog signal into a digital signal and stores it inside. After the mining equipment finishes working, the wireless data acquisition device (6) is taken out and the data is imported into the analysis equipment, thereby realizing the vibration analysis of the cutting teeth of the mining equipment, or the vibration data in the wireless data acquisition device can be received in real time using a wireless data receiving device.

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