Pick cutting force data acquisition device

Abstract

The invention belongs to the technical field of pick cutting force data acquisition, and particularly relates to a pick cutting force data acquisition device. Comprising a toothholder, and an inner conical hole is formed in the middle of the toothholder; the gear sleeve comprises a lower cone, the lower cone is installed in the inner conical hole in an interference fit mode, and a circle of groove is formed in the outer circle face of the middle of the lower cone and used for fixing the three-way strain gauge; the upper clamping table is connected to the top of the lower cone, and the upper clamping table is clamped on the outer side of the inner conical hole of the tooth holder; the short cutting pick is mounted on the upper clamping table; and the wireless data acquisition unit is used for acquiring data of the three-way strain gauges. The shape of the cutting tooth sleeve is completely consistent with that of an existing cutting tooth sleeve, and indifference interchange can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of pick cutting force data collection, in particular to a pick cutting force data collection device. Background Art

[0002] The cutting mechanism is a key mechanism of underground mining and excavation equipment, and the pick is the main cutting tool of the cutting mechanism. It is characterized by high wear resistance and high hardness, and can achieve economical cutting of coal and rock underground. For a long time, the rock-breaking mechanism of the pick has been mainly analyzed through data sampling on the test platform. Limited by the test level and the setting of test conditions, this method has certain limitations and theoretical nature, and it is obviously not realistic to directly arrange the test equipment on the cutting mechanism that is constantly moving, rotating, and breaking rocks. The present invention provides a cutting force data acquisition device for the pick, which realizes real-time data acquisition of the cutting force of the pick by specially designing the pick and the tooth sleeve, and a wireless data acquisition device is built into the tooth sleeve, so as to provide the most realistic cutting data under different cutting conditions for the cutting and rock-breaking mechanism. Summary of the invention

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

[0004] The present invention adopts the following technical solution: a pick cutting force data acquisition device, comprising: A gear seat, wherein an inner tapered hole is provided in the middle of the gear seat; A gear sleeve, the gear sleeve comprising: A lower cone, the lower cone is installed in the inner conical hole by interference fit, and a circle of grooves is arranged on the outer circular surface of the middle part of the lower cone for fixing the three-dimensional strain gauge; An upper clamping platform, the upper clamping platform is connected to the top of the lower cone, and the upper clamping platform is clamped on the outer side of the inner conical hole of the gear seat; A short pick, wherein the short pick is mounted on the upper clamping table; A wireless data collector is used to collect data from a three-dimensional strain gauge.

[0005] An inner hole I is arranged in the lower cone, and a wire hole is arranged on the groove to communicate with the inner hole I, and a data line of the three-way strain gauge enters the inner hole I through the wire hole.

[0006] The wireless data collector is arranged in the inner hole I and is closed and fixed by the end cover.

[0007] An inner hole II is arranged in the upper clamping platform, and the short pick is installed in the inner hole II through a clamping ring.

[0008] When it is necessary to collect the cutting vibration conditions of the mining equipment, one or two cutting teeth on the cutting mechanism are replaced with a cutting tooth cutting force data collection device. When the mining equipment is working, the vibration of the cutting teeth is transmitted to the three-way strain gauge, and the three-way strain gauge transmits the vibration analog signal to the wireless data collector through the data line. The wireless data collector converts the analog signal into a digital signal and stores it inside. After the mining equipment is finished working, the wireless data collector is taken out and the data is imported into the analysis equipment, thereby realizing the vibration condition analysis of the cutting teeth of the mining equipment, or using the wireless data receiving device to receive the vibration data in the wireless data collector in real time.

[0009] Compared with the prior art, the present invention solves the problem of difficulty in collecting cutting data during actual cutting by mining equipment and is a special type of pick cutting force data collection device. The appearance of the device is completely consistent with the existing pick sleeve and can be interchanged without distinction. The device is designed with short picks according to functional requirements, a three-dimensional strain gauge is attached to the middle of the outer cylindrical surface of the sleeve, and a cylindrical data collector is arranged in the inner hole of the sleeve. This can realize the most realistic data collection when the mining equipment is working, which is of great significance to the research on the rock breaking mechanism of the pick. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the gear sleeve structure of the present invention; In the figure, 1- short tooth, 2- tooth sleeve, 3- clamping ring, 4- strain gauge, 5- tooth seat, 6- wireless data collector, 7- end cover, 201- groove, 202- wire hole. DETAILED DESCRIPTION

[0011] In order to make the purpose, 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 part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0012] like Figure 1 As shown, a pick cutting force data acquisition device comprises: A gear seat 5, wherein an inner tapered hole is provided in the middle of the gear seat 5; Gear sleeve 2, see Figure 2 The gear sleeve 2 comprises: A lower cone 205, wherein the lower cone 205 is installed in the inner conical hole by interference fit, and a circle of grooves 201 is arranged on the outer circumferential surface of the middle part of the lower cone 205 for fixing the three-dimensional strain gauge 4; An upper clamping platform 206, wherein the upper clamping platform 206 is connected to the top of the lower cone 205, and the upper clamping platform 206 is clamped on the outer side of the inner conical hole of the gear seat 5; A short pick 1, wherein the short pick 1 is mounted on the upper clamping table 206; The wireless data collector 6 collects data from the three-dimensional strain gauge 4 .

[0013] An inner hole 1203 is arranged in the lower cone 205 , and a wire hole 202 is arranged on the groove 201 to communicate with the inner hole 1203 . The data line of the three-way strain gauge 4 enters the inner hole 1203 through the wire hole 202 .

[0014] The wireless data collector 6 is arranged in the inner hole I203 and is closed and fixed by the end cover 7.

[0015] An inner hole II204 is provided in the upper clamping platform 206 , and the short pick 1 is installed in the inner hole II204 through the clamping ring 3 .

[0016] Specifically, the tooth seat 5 is the main fixing device of the entire device, and its flat end can be welded to the cutting drum of the mining and excavation equipment to form a fixation; the tooth sleeve 2 forms a tight fit with the inner conical hole of the tooth seat 5 through the interference fit of the outer conical surface of the lower part, and a circle of grooves 201 is arranged at a preferred position on the middle outer circular surface of the tooth sleeve 2 through simulation calculation, and two wire holes 202 are evenly distributed on the grooves 201, and two three-dimensional strain gauges 4 are welded on the grooves 201 corresponding to the wire holes 202. The data lines of the three-dimensional strain gauges 4 enter through the wire holes 202. Into the interior of the tooth sleeve 2; the upper part of the inner hole of the tooth sleeve 2 forms a clearance fit with the pick 1, and the short pick 1 is fixed by the built-in clamping ring 3 to prevent the short pick 1 from axial movement. The short pick 1 is a short tooth shank, which leaves enough space for the wireless data collector 6. The columnar wireless data collector 6 is inserted into the lower part of the inner hole of the tooth sleeve 2. One end of the wireless data collector 6 is connected to the data cable of the three-way strain gauge 4, and the other end is closed and fixed by the end cover 7. The wireless data collector 6 has its own power supply and can record the three-way axial load stress of the pick in real time.

[0017] The three-dimensional strain gauge 4 is arranged on the outer circumferential surface of the gear sleeve 2, which can more realistically reflect the stress conditions of the pick when cutting.

[0018] When it is necessary to collect the cutting vibration condition of the mining equipment, one or two cutting teeth on the cutting mechanism are replaced with a cutting tooth cutting force data collection device. When the mining equipment is working, the vibration received by the cutting tooth 1 is transmitted to the three-way strain gauge 4. The three-way strain gauge 4 transmits the vibration analog signal to the wireless data collector 6 through the data line 8. The wireless data collector 6 converts the analog signal into a digital signal and stores it inside. After the mining equipment is finished working, the wireless data collector 6 is taken out and the data is imported into the analysis equipment, thereby realizing the vibration condition analysis of the cutting teeth of the mining equipment, or using the wireless data receiving device to receive the vibration data in the wireless data collector in real time.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 cutting force data acquisition device for a pick, characterized in that: include: A gear seat (5), wherein an inner tapered hole is provided in the middle of the gear seat (5); A gear sleeve (2), wherein the gear sleeve (2) comprises: A lower cone (205), the lower cone (205) being installed in the inner conical hole by interference fit, and a circle of grooves (201) being arranged on the outer circumferential surface in the middle of the lower cone (205) for fixing the triaxial strain gauge (4); An upper clamping platform (206), the upper clamping platform (206) being connected to the top of the lower cone (205), and the upper clamping platform (206) being clamped on the outside of the inner conical hole of the gear seat (5); A short pick (1), wherein the short pick (1) is mounted on an upper clamping table (206); A wireless data collector (6), wherein the wireless data collector (6) collects data from a three-dimensional strain gauge (4).

2. The pick cutting force data acquisition device according to claim 1, characterized in that: An inner hole I (203) is arranged in the lower cone (205), a wire hole (202) is arranged on the groove (201) and is connected to the inner hole I (203), and a data line of the three-dimensional strain gauge (4) enters the inner hole I (203) through the wire hole (202).

3. The pick cutting force data acquisition device according to claim 2, characterized in that: The wireless data collector (6) is arranged in the inner hole I (203) and is sealed and fixed by the end cover (7).

4. The pick cutting force data acquisition device according to claim 1, characterized in that: An inner hole II (204) is provided in the upper clamping platform (206), and the short pick (1) is installed in the inner hole II (204) via a clamping ring (3).

5. The pick cutting force data acquisition device according to claim 1, characterized in that: When it is necessary to collect the cutting vibration condition of the mining equipment, one or two cutting teeth on the cutting mechanism are replaced with a cutting tooth cutting force data collection device. When the mining equipment is working, the vibration received by the cutting teeth (1) is transmitted to the three-dimensional strain gauge (4). The three-dimensional strain gauge (4) transmits the vibration analog signal to the wireless data collector (6) through the data line (8). The wireless data collector (6) converts the analog signal into a digital signal and stores it inside. When the mining equipment is finished working, the wireless data collector (6) is taken out and the data is imported into the analysis equipment, thereby realizing the vibration condition analysis of the cutting teeth of the mining equipment, or using the wireless data receiving device to receive the vibration data in the wireless data collector in real time.

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