Carbon material rebound rate automatic detection device

Abstract

The utility model discloses a carbon material rebound rate automatic detection device, which relates to the technical field of carbon material rebound rate detection and specifically comprises a U-shaped frame with a downward opening, a telescopic mechanism is mounted in the middle of the top of the U-shaped frame, a mounting seat is arranged at the bottom of the telescopic mechanism, two ends of the bottom of the U-shaped frame are mounted on a support table, and a grating ruler is arranged on one side of the U-shaped frame. The mounting seat is connected with a reading head of the grating ruler through a connecting arm, the limiting part is detachably provided with a cylindrical mold, and the telescopic mechanism and the grating ruler are electrically connected with the control part. When the carbon material compacting device is used, a carbon material is placed in the barrel-shaped mold, then the barrel-shaped mold is directly placed in the annular limiting seat to be positioned, then the hydraulic cylinder is controlled to drive the pressing disc to descend into the barrel-shaped mold, compacting operation can be conducted on the carbon material, in the compacting process, the controller directly obtains a result, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon material rebound rate detection, in particular to an automatic carbon material rebound rate detection device. Background Technique

[0002] As important components in friction materials, coke and graphite mainly function as lubricants, reducing the loss of friction materials, adjusting the friction coefficient, reducing noise, and slowing down vibration. The rebound properties of coke and graphite can adjust the compression characteristics of friction materials, reduce noise, and slow down the vibration during braking. For graphite materials used in friction materials, their compression and rebound rates are important indicators for measuring the quality of graphite materials. The existing measurement method is to put the graphite material into a mold, then apply a certain pressure to the mold to press the graphite in the mold into shape, and then measure the height of the graphite after pressing and the rebound height after the pressure is removed successively. The operation process is cumbersome and the height data cannot be directly read.

[0003] The calculation method of the rebound rate of graphite materials is as shown in paragraph

[0032] of the specification of a manual graphite material rebound rate detection device proposed in the document number "CN220473242U". The rebound rate = [(D2 - D1) / D1] × 100%. When measuring D1 and D2, as shown in paragraph

[0042] of the specification, it is necessary to first measure the distance D1 between the first pressing gasket and the second pressing gasket after pressurization, and then measure the distance D2 between the first pressing gasket and the second pressing gasket again after pressure relief, and calculate the rebound rate according to the formula. This process is manual and requires manual measurement, with low measurement accuracy, and separate operations are required when measuring D1 and D2. For this reason, we propose an automatic carbon material rebound rate detection device. Content of the Utility Model

[0004] Aiming at the deficiencies that the existing measurement of the carbon material rebound rate cannot directly read the data and the operation process is cumbersome, the utility model provides an automatic carbon material rebound rate detection device, which has the advantage of directly reading the height data through a grating ruler, and solves the problems raised in the above background technique.

[0005] To achieve the above objectives, the utility model is realized through the following technical solutions: design an automatic carbon material rebound rate detection device, including a U-shaped frame with an opening facing downwards. A telescopic mechanism is installed in the middle of the top of the U-shaped frame. An installation seat is provided at the bottom of the telescopic mechanism. The two ends of the bottom of the U-shaped frame are installed on a support platform. A grating ruler is provided on one side of the U-shaped frame. The installation seat is connected to the reading head of the grating ruler through a connecting arm; wherein, a pressing head is further provided below the installation seat, a pressure sensor is provided below the pressing head, and a limiting part is provided on the support platform and below the pressing head. A cylindrical mold is detachably provided in the limiting part; wherein, the pressure sensor, the telescopic mechanism, and the grating ruler are respectively electrically connected to a control part.

[0006] Preferably, support legs are provided at the four corners of the bottom of the support platform. A control cabinet is provided below the support platform, and a control box is also provided on the side of the U-shaped frame. The control part includes a hydraulic station arranged in the control cabinet and a controller arranged in the control box. The telescopic mechanism is a hydraulic cylinder arranged at the top of the U-shaped frame. The hydraulic cylinder is connected to the hydraulic station through a pipeline. The controller is electrically connected to the grating ruler, the pressure sensor, and the hydraulic station respectively.

[0007] Preferably, the limiting part includes an annular limiting seat installed on the top of the support platform. The cylindrical mold is placed in the annular limiting seat, and locking bolts are provided on the side of the annular limiting seat.

[0008] Preferably, the controller is also electrically connected to a display and operation buttons respectively. The display and operation buttons are arranged on the side of the control box.

[0009] Preferably, the pressing head includes a pressing plate movably placed in the cylindrical mold. The pressure sensor is installed at the bottom of the pressing plate. A support shaft is coaxially connected to the top of the pressing plate, and the top of the support shaft is vertically connected to the connecting seat. The connecting seat is placed below the mounting seat and the two are detachably connected.

[0010] Preferably, both ends of the connecting arm are detachably connected to the mounting seat and the reading head respectively.

[0011] Preferably, a guiding shaft is vertically provided on one side of the mounting seat, and the top of the guiding shaft movably penetrates through the U-shaped frame.

[0012] Compared with the prior art, when the present utility model is in use, the carbon material is placed in the cylindrical mold, and then the cylindrical mold is directly placed in the annular limiting seat for positioning. Then, the hydraulic cylinder is controlled to drive the pressing plate to descend into the cylindrical mold, and the carbon material can be compacted. During the pressing process, the controller directly obtains the result, with simple operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural view of the present utility model Figure 1 .

[0014] Figure 2 is a schematic structural view of the present utility model Figure 2 .

[0015] Figure 3 is the front view of the present utility model.

[0016] Figure 4 is a schematic diagram of the measurement process of the grating ruler measurement.

[0017] In the figure: 1, support platform; 2, support leg; 3, guide shaft; 4, annular limit seat; 5, cylindrical mold; 6, pressure sensor; 7, pressure plate; 8, U-shaped frame; 9, mounting seat; 10, support shaft; 11, connecting arm; 12, control box; 13, hydraulic cylinder; 14, connecting seat; 15, grating ruler; 16, reading head; 17, locking bolt; 18, control cabinet. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 to 4 , the present invention provides a technical solution: an automatic detection device for the rebound rate of carbon materials, including a U-shaped frame 8 with the opening facing downwards. A telescopic mechanism is installed in the middle of the top of the U-shaped frame 8, and both ends of the bottom of the U-shaped frame 8 are installed on the support platform 1. As Figure 1 shown, support legs 2 are provided at the four corners of the bottom of the support platform 1, and a control cabinet 18 is provided below the support platform 1. A hydraulic station is provided in the control cabinet 18. The telescopic mechanism is a hydraulic cylinder 13, which is arranged in the middle of the top surface of the U-shaped frame 8. The hydraulic cylinder 13 is connected to the hydraulic station through a pipeline. An installation seat 9 is provided at the bottom of the hydraulic cylinder 13, and a guide shaft 3 is vertically provided on one side of the installation seat 9. The top of the guide shaft 3 movably penetrates through the U-shaped frame 8, and the guide shaft 3 can enhance the stability of the installation seat 9.

[0020] A control box 12 is also provided on the side of the U-shaped frame 8. A controller is provided in the control box 12, and the controller is a host computer, a PLC logic controller or a PCB control board. The controller is electrically connected to the hydraulic station, the display, and the operation buttons, and the display and the operation buttons are arranged on the side of the control box 12. The operation buttons include buttons for controlling the telescopic movement of the hydraulic cylinder, a start button, a zero-clearing button, a reset button, etc. Among them, the controller and the hydraulic station constitute the control part of this application, that is, information is transmitted to the controller through the corresponding operation buttons, and then the controller controls the hydraulic cylinder 13 to extend or shorten, thereby driving the installation seat 9 to move up and down.

[0021] Immediately afterwards, a pressure head is provided below the installation seat 9, and the pressure head rises and falls with the rise and fall of the hydraulic cylinder, as Figure 1 and Figure 3As shown in the figure, the specific structure of the indenter includes a pressure plate 7 that can be movably placed inside a cylindrical mold 5. A pressure sensor 6 electrically connected to the controller is provided at the bottom of the pressure plate 7. A support shaft 10 is coaxially connected to the top of the pressure plate 7. The top of the support shaft 10 is vertically connected to a connecting seat 14. The connecting seat 14 is placed below the mounting seat 9 and the two are detachably connected. Specifically, the connecting seat 14 and the mounting seat 9 are connected by bolts. When not in detection, the pressure plate 7 and the pressure sensor 6 stay at a high position driven by the hydraulic cylinder 13.

[0022] A limiting part is provided on the support table 1 and below the indenter. The structure of the limiting part specifically includes an annular limiting seat 4 installed on the top of the support table 1. As Figure 3 shown, the bottom of the cylindrical mold 5 can be placed inside the annular limiting seat 4 for positioning, and at this time the pressure plate 7 is exactly located above the cylindrical mold 5.

[0023] It should be noted that the size of the pressure plate 7 matches the inner cavity size of the cylindrical mold 5, that is, the pressure plate 7 can be freely placed into and taken out of the cylindrical mold 5. Place the carbon material to be detected inside the cylindrical mold 5. Control so that after the hydraulic cylinder 13 extends, the hydraulic cylinder 13 can drive the pressure plate 7 to be placed inside the top of the cylindrical mold 5, thereby pressing the carbon material located inside the cylindrical mold 5.

[0024] The specific measurement steps for the rebound rate of the carbon material are as follows. First, place the carbon material to be detected inside the cylindrical mold 5. It should be noted that the carbon material cannot overflow the top of the inner cavity of the cylindrical mold 5, and there should be a certain space left at the top of the cylindrical mold 5.

[0025] Then, control the hydraulic cylinder 13 to extend so that the pressure plate 7 is slowly placed inside the top of the cylindrical mold 5. As the hydraulic cylinder 13 gradually extends, the pressure plate 7 slowly presses the carbon material tightly. The downward pressure of the hydraulic cylinder 13 is always monitored by the pressure sensor 6. When the downward pressure of the pressure plate 7 reaches the set value, the hydraulic cylinder 13 stops moving. At this time, the carbon material is pressed to the preset height.

[0026] Finally, control the hydraulic cylinder 13 to slowly lift, and the pressure plate 7 also gradually rises from inside the cylindrical mold 5. Due to the elasticity of the carbon material itself, as the pressure on the top of the carbon material is gradually withdrawn, the carbon material also rebounds as it rises with the pressure plate 7. When the detected value of the pressure sensor 6 is zero, the rebound height of the carbon material also reaches the maximum value.

[0027] Based on the above specific measurement steps for the rebound rate of the carbon material, if the thickness of the carbon material when the pressing is completed and the thickness of the carbon material when the reading of the pressure sensor 6 is zero can be directly obtained, the rebound rate can be calculated. As Figure 1 、 Figure 2 and Figure 3As shown in the figure, a grating scale 15 is provided on one side of the U-shaped frame 8, and the grating scale is electrically connected to the controller (it should be noted that the electrical connection in this application is specifically achieved by connecting wires and signal lines to realize the transmission of electric energy and electrical signals). As Figure 1 shown, the mounting seat 9 and the reading head 16 of the grating scale 15 are connected by a connecting arm 11, so that the reading head 16 can be lifted and lowered as the mounting seat 9 moves up and down. When the mounting seat 9 moves, the reading head 16 can be driven to move by the connecting arm 11, and the height data can be directly read out;

[0028] As Figure 4 shown, the specific measurement process of the grating scale 15 is as follows:

[0029] 1. First of all, it should be noted that the measurement stroke of the grating scale 15 is certain. During the initial setting, the data can be calibrated first, that is, control the hydraulic cylinder 13 to descend, place the pressing plate 7 at the bottom of the inner cavity of the cylindrical mold 5, and record the reading of the grating scale 15 as A at this time (it can be considered that the measurement stroke of the grating scale is A at this time);

[0030] 2. After the pressing plate 7 descends, the carbon material is gradually compressed (in the actual operation process, the pressure applied to the carbon material is about 5 MPa). When the carbon material is pressed to the preset height, the descending stroke of the reading head 16 at this time is A1. Since there is compacted carbon material below the pressing plate 7, the height difference A2 between A and A1 is the height of the carbon material after being compressed;

[0031] 3. When the pressing plate 7 rises to the monitoring data of the pressure sensor 6 being zero, the descending stroke of the reading head 16 at this time is A4. Therefore, the height difference A3 between A and A4 is the height of the carbon material after being pressed and rebounded;

[0032] 4. Finally, the height difference between A3 and A2 is the rebound height.

[0033] It should be noted that the ascending and descending heights of the hydraulic cylinder 13 are certain, that is, the stroke of the reading head 16 is always 0-A. Therefore, after one calibration, it is not necessary to calibrate again when measuring other carbon materials later. And this process is completely read through the grating scale 15, with high precision, can be operated repeatedly, and does not require manual measurement.

[0034] Among them, the two ends of the connecting arm 11 are respectively detachably connected to the mounting seat 9 and the reading head 16, that is, the two ends of the connecting arm 11 are respectively connected to the mounting seat 9 and the reading head 16 by bolts.

[0035] Furthermore, during the rising process of the pressing plate 7, carbon materials may enter between the pressing plate 7 and the inner wall of the cylindrical mold 5. At this time, there may be friction between the pressing plate 7 and the inner wall of the cylindrical mold 5. As Figure 3As shown in the figure, a locking bolt 17 is provided on the side of the annular limiting seat 4. Tightening the locking bolt 17 can lock the cylindrical mold 5 to prevent the cylindrical mold 5 from shifting.

[0036] Furthermore, as Figure 4 shown in the figure, in order to prevent the wire harness connected to the pressure sensor 6 from touching the cylindrical mold 5, the support shaft 10 is designed as a hollow structure, and the wire harness connected to the pressure sensor 6 is placed inside the support shaft 10, and then passes through the opening at the top of the support shaft 10 (as Figure 4 indicated by the arrow B in the figure), and then the wire harness is connected to the controller.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for the rebound rate of a carbon material, comprising a U-shaped frame (8) with an opening facing downwards. A telescopic mechanism is installed in the middle of the top of the U-shaped frame (8). A mounting seat (9) is provided at the bottom of the telescopic mechanism. The two ends of the bottom of the U-shaped frame (8) are installed on a support table (1), characterized in that, One side of the U-shaped frame (8) is provided with a grating scale (15), and the mounting base (9) and the reader head (16) of the grating scale (15) are connected by a connecting arm (11). It further includes a pressing head arranged below the mounting base (9), a pressure sensor (6) arranged below the pressing head, and a limiting part arranged on the support table (1) and below the pressing head. A cylindrical mold (5) is detachably arranged in the limiting part; wherein, the pressure sensor (6), the telescopic mechanism, and the grating scale (15) are respectively electrically connected to the control part.

2. The automatic detection device for the rebound rate of the carbon material according to claim 1, characterized in that, Support legs (2) are arranged at the four corners of the bottom of the support table (1), a control cabinet (18) is arranged below the support table (1), and a control box (12) is further arranged on the side surface of the U-shaped frame (8). The control part includes a hydraulic station arranged in the control cabinet (18) and a controller arranged in the control box (12). The telescopic mechanism is a hydraulic cylinder (13) arranged at the top of the U-shaped frame (8). The hydraulic cylinder (13) is connected to the hydraulic station through a pipeline. The controller is respectively electrically connected to the grating scale (15), the pressure sensor (6), and the hydraulic station.

3. The automatic detection device for the carbon material rebound rate according to claim 2, wherein, The limiting part includes an annular limiting seat (4) installed on the top of the support table (1). The cylindrical mold (5) is placed in the annular limiting seat (4), and a locking bolt (17) is arranged on the side surface of the annular limiting seat (4).

4. The automatic detection device for the rebound rate of the carbon material according to claim 3, characterized in that, The controller is further respectively electrically connected to a display and operation buttons. The display and operation buttons are arranged on the side surface of the control box (12).

5. The automatic detection device for the rebound rate of the carbon material according to any one of claims 2-4, characterized in that, The pressing head includes a pressing plate (7) movably placed in the cylindrical mold (5). The pressure sensor (6) is installed at the bottom of the pressing plate (7). A support shaft (10) is coaxially connected to the top of the pressing plate (7). The top of the support shaft (10) is vertically connected to a connecting seat (14). The connecting seat (14) is placed below the mounting base (9) and the two are detachably connected.

6. The automatic detection device for the rebound rate of the carbon material according to claim 5, characterized in that, Both ends of the connecting arm (11) are detachably connected to the mounting base (9) and the reader head (16) respectively.

7. The automatic detection device for the rebound rate of the carbon material according to claim 1, characterized in that, One side of the mounting base (9) is vertically provided with a guide shaft (3), and the top of the guide shaft (3) movably penetrates through the U-shaped frame (8).

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