Automatic early warning device for abrasion of bearing of stirrer

Abstract

The utility model discloses an automatic early warning device for abrasion of a mixer bearing, and relates to the technical field of concrete mixers, the automatic early warning device comprises a material receiving piece arranged below the mixer bearing, a detection piece arranged in the material receiving piece and alarm equipment arranged on a mixer, and further comprises a control module, and the control module is in data connection with the detection piece. The stirrer bearing wear automatic early warning device is in control connection with the alarm equipment, and can detect the wear of the bearing in real time in the working process of the stirrer, so that a worker can maintain or replace the bearing in time, damage to a stirring shaft, blades, a base and other parts of the stirrer is avoided, and the service life of the stirrer is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of concrete mixers, and more specifically, to an automatic early warning device for bearing wear of a mixer. Background Art

[0002] The main purpose of a concrete mixing station is to mix concrete, also known as a concrete mixing station. The concrete mixed by the concrete mixing station is transported to the construction unit by special vehicles.

[0003] During the mixing process of the mixing station, the mixer is a commonly used construction machinery, mainly used to mix cement, sand, various dry mortar and other building materials. It includes a cylinder or trough for holding the concrete raw materials to be mixed. A mixing shaft with blades is arranged in the cylinder or trough. The motor drives the mixing shaft to rotate in the cylinder or trough through the bearing, and mixes various raw materials to make them into a mixture or a machine with suitable consistency.

[0004] When the mixer works continuously, the bearings of the mixer are prone to wear, which in turn reduces the sealing performance of the bearings. The leaked water and sand and gravel materials will further wear the bearings, causing damage to other parts of the mixer such as the mixing shaft, blades, and even the base. However, during the production process, the degree of wear and sealing of the mixer bearings are difficult to detect with the naked eye. Once visible wear occurs, the mixer bearings have been damaged to a more serious extent and there is room for improvement. Utility Model Content

[0005] In view of the problem that the degree of wear of mixer bearings is difficult to detect in actual use, the purpose of this application is to propose an automatic early warning device for mixer bearing wear, which can detect the wear of the bearings in real time during the operation of the mixer, making it convenient for the staff to repair or replace the bearings in time, and avoiding damage to the mixer shaft, blades, base and other parts, thereby extending the service life of the mixer.

[0006] The specific plan is as follows:

[0007] An automatic early warning device for bearing wear of a mixer, comprising a receiving piece arranged below the mixer bearing for receiving leakage, the receiving piece being detachably connected to the mixer bearing, a detection piece being arranged inside the receiving piece, the detection piece outputting a leakage amount signal of the leakage, and an alarm device for early warning being arranged on the mixer;

[0008] The automatic warning device for mixer bearing wear also includes a control module, which is configured to be data-connected with the detection component, receive the leakage signal, be control-connected with the alarm device, and output a control signal to control the alarm device to send out a warning signal.

[0009] By adopting the above technical scheme, the receiving piece collects the leakage falling between the bearing gaps, and the detection piece arranged in the receiving piece collects and obtains the leakage amount at all times, and outputs the leakage amount signal to the control module, which compares it with the preset leakage threshold value. When the leakage amount of the bearing gap is greater than the preset leakage threshold value, it indicates that the mixer bearing is worn, resulting in poor sealing. At this time, the control module outputs a control signal to the alarm device, and the alarm device sends out a warning signal to remind the staff that the mixer bearing needs maintenance and repair. The wear of the bearing is detected in real time during the operation of the mixer. On the one hand, there is no need to stop the machine for maintenance, thereby avoiding affecting the production efficiency of concrete. On the other hand, it can be detected and a warning can be issued in the early stage of the mixer bearing wear, so that the staff can repair or replace the bearing in time, avoid the leakage of water in the raw materials on the concrete composition and quality, and avoid damage to the mixer shaft, blades, base and other components, thereby extending the service life of the mixer.

[0010] Preferably, the material receiving member includes a material receiving hopper, which is in a semicircular tube shape and is sleeved on the mixer bearing. One side of the material receiving hopper is provided with an opening penetrating the tube wall along its length direction, and the width of the opening is greater than the diameter of the mixer bearing.

[0011] By adopting the above technical solution, when in use, the receiving hopper can be conveniently sleeved on the bearing from the opening, and the inner wall of the circular tubular receiving hopper is in an arc shape, which is also convenient for collecting leakage.

[0012] Preferably, a material receiving groove is provided on the inner wall of the material receiving hopper on the side opposite to the opening, and the cross-sectional area of ​​the inner wall of the material receiving groove along the axis direction of the material receiving hopper gradually decreases toward the direction away from the axis direction of the material receiving hopper.

[0013] By adopting the above technical solution, the receiving trough collects the leakage in the receiving hopper in a centralized manner, and the gradually narrowing receiving trough can expand the increase of the liquid level, making the leakage detection more sensitive and timely.

[0014] Preferably, a threaded hole is provided on one side end face of the receiving hopper, a connecting hole is provided on the shaft housing of the mixer bearing, a connecting bolt is provided in the connecting hole, and the connecting bolt passes through the connecting hole and is threadedly connected to the threaded hole on the end face of the receiving hopper.

[0015] By adopting the above technical solution, the connecting bolt can be passed through the connecting hole on the shaft housing and then threadedly connected to the threaded hole, so that the receiving hopper can be detachably connected to the shaft housing, which makes it convenient to remove the receiving hopper and clean the leakage therein.

[0016] Preferably, a through hole penetrating through the bottom of the material receiving piece is provided.

[0017] During the normal use of the mixer bearing, a small amount of leakage may occur. By adopting the above technical solution, a normal amount of leakage can be discharged from the receiving piece. An alarm will only be issued when the bearing is abnormally worn and the leakage increases, thus avoiding false alarms caused by the accumulation of normal leakage.

[0018] Preferably, the detection member is configured as a proximity sensor for detecting the liquid level height in the receiving hopper.

[0019] By adopting the above technical solution, the proximity sensor can detect the approach of the liquid level of the leakage, and when the distance approaches to a certain extent, it outputs a leakage amount signal, indicating an abnormal increase in the leakage amount.

[0020] Preferably, the alarm device is configured as an audible and visual alarm, and the base of the audible and visual alarm is connected to the mixer housing.

[0021] By adopting the above technical solution, the sound and light alarm can emit light signals and sound signals to effectively remind the staff on site to conduct inspections.

[0022] Preferably, the control module includes:

[0023] The leakage detection circuit includes a proximity sensor, which detects and outputs a leakage signal;

[0024] A comparator circuit, comprising a two-input comparator, wherein a positive input terminal is connected to the leakage detection circuit signal to receive the leakage detection signal, a negative input terminal is electrically connected to a reference voltage output circuit to receive a reference comparison voltage, and a comparison output terminal outputs the comparison result signal;

[0025] The alarm circuit includes an alarm power supply, a switch component and an audible and visual alarm. The switch component is configured as a switch transistor. The base of the switch transistor is electrically connected to the comparison output terminal of the two-input comparator, the collector is electrically connected to the alarm power supply, and the emitter is electrically connected to the enable terminal of the audible and visual alarm.

[0026] By adopting the above technical solution, when the leakage detection circuit detects that the light intensity increases, the comparison output terminal outputs a high level, the switch transistor is turned on, and the sound and light alarm of the alarm circuit is started to send an alarm signal to warn the staff.

[0027] Preferably, an anti-interference circuit is provided between the comparison output terminal of the two-input comparator and the switch element.

[0028] The mixer will vibrate when working, causing the liquid level in the receiving part to shake. By adopting the above technical solution, when the external environment disturbs the signal, the anti-interference circuit can make the continuous leakage increase before causing the sound and light alarm to alarm, thereby reducing the occurrence of false alarms.

[0029] Preferably, the control module is also connected to a remote alarm module, and the remote alarm module is wirelessly connected to a mobile terminal.

[0030] By adopting the above technical solution, the remote alarm module outputs the alarm signal to the operator's mobile terminal, including mobile phones and computers. On the one hand, it is convenient to collect detection alarm records, and on the other hand, it is convenient for monitoring personnel to monitor in real time and take timely action.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] (1) By setting up material receiving parts, detection parts, alarm equipment and control modules, the wear of the bearings can be detected in real time during the operation of the mixer, without stopping the machine for maintenance, thus avoiding affecting the production efficiency of concrete;

[0033] (2) The wear of the mixer bearing can be detected and an early warning can be issued, which facilitates the staff to repair or replace the bearing in time, avoiding the leakage of water in the raw materials from affecting the composition and quality of the concrete, and also avoiding damage to the mixer shaft, blades, base and other parts, thereby extending the service life of the mixer;

[0034] (3) By providing a through hole and an anti-interference circuit at the bottom of the receiving piece, the occurrence of false alarms is minimized. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is the overall schematic diagram of the automatic warning device for this application;

[0036] Figure 2 This is the overall schematic diagram of the receiving hopper for this application;

[0037] Figure 3 This is a cross-sectional schematic diagram of the receiving hopper for this application;

[0038] Figure 4 This is a circuit diagram of the control module of this application.

[0039] Figure numerals: 1. material receiving part; 11. material receiving groove; 12. opening; 13. through hole; 14. threaded hole; 15. connecting bolt; 2. detection part; 3. alarm device; 4. control module; 41. delay module; 42. remote alarm module; 5. shaft housing. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with embodiments and drawings, but the implementation methods of the present application are not limited thereto.

[0041] In the description of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0042] An automatic early warning device for bearing wear of a mixer, such as Figure 1 As shown, it includes a material receiving member 1 arranged below the mixer bearing, a detection member 2 arranged in the material receiving member 1, and an alarm device 3 arranged on the mixer, and also includes a control module 4, which is connected to the detection member 2 for data and connected to the alarm device 3 for control. The material receiving member 1 collects the leakage falling between the bearing gaps, and the detection member 2 arranged in the material receiving member 1 collects the leakage amount at all times, and outputs the leakage amount signal to the control module 4, which compares it with the preset leakage threshold. When the leakage amount of the bearing gap is greater than the preset leakage threshold, it indicates that the mixer bearing is worn, resulting in poor sealing. At this time, the control module 4 outputs a control signal to the alarm device 3, and the alarm device 3 sends a warning signal to remind the staff that the mixer bearing needs maintenance and repair.

[0043] Detailed, such as Figure 1-2 As shown, the material receiving member 1 includes a material receiving hopper and a connecting member, and the connecting member is used to detachably connect the material receiving hopper to the bottom of the mixer bearing to receive the leakage falling from the bearing.

[0044] The material receiving piece 1 is cylindrical as a whole and is coaxially sleeved on the mixer bearing. An opening 12 that penetrates the tube wall is provided on one side of the material receiving hopper along its length direction, so that the cross-section of the material receiving hopper is an arc. The width of the opening 12 is larger than the diameter of the mixer bearing, which is convenient for removing the material receiving hopper and cleaning the accumulated leakage in the material receiving hopper. The inner wall of the circular tubular material receiving hopper is in an arc shape, which is also convenient for the leakage to be concentrated at the bottom of the material receiving hopper and the leakage to be detected in a centralized manner.

[0045] The connecting piece is configured as a connecting bolt 15, a threaded hole 14 is provided on one end face of the receiving hopper, a connecting hole is provided on the shaft housing 5 of the mixer bearing, the connecting bolt 15 passes through the connecting hole and is threadedly connected to the threaded hole 14 on the end face of the receiving hopper, the threaded connection is convenient for disassembly, and the arc-shaped inner wall is also convenient for cleaning leakage.

[0046] In order to increase the sensitivity of leakage detection, a receiving trough 11 is provided on the inner wall of the hopper on the side opposite to the opening 12. The cross-sectional area of ​​the inner wall of the receiving trough 11 along the axial direction of the hopper gradually decreases toward the direction away from the axial direction of the hopper. The leakage can smoothly fall into the receiving trough 11 along the arc-shaped inner wall. The receiving trough 11 collects the leakage. The gradually narrowing receiving trough 11 can expand the tiny leakage into a more obvious increase in the liquid level, so that the leakage detection is more sensitive and timely, and it is convenient for early detection of the wear of the stirring member bearing.

[0047] During the normal use of the mixer bearing, a small amount of leakage may occur. If a small amount of leaked water and sand accumulate in the receiving trough 11, the liquid level will rise, which will lead to false alarms. Figure 3 As shown, a through hole 13 is provided at the bottom of the receiving trough 11 for discharging a normal amount of leakage from the receiving trough 11. An alarm is issued only when the bearing is abnormally worn and the leakage increases, thereby avoiding false alarms caused by the accumulation of normal leakage. The size of the through hole 13 is set to be able to discharge a normal amount of leakage. In the embodiment of the present application, the diameter of the through hole 13 is preferably 2 mm.

[0048] like Figure 4 As shown, the control module 4 includes a leakage detection circuit, a comparison circuit and an alarm circuit. The leakage detection circuit includes a detection component 2. The detection component 2 is configured as a proximity sensor arranged inside the receiving hopper to detect the liquid level height of the leakage in the receiving hopper. The output voltage value of the leakage detection circuit changes with the leakage amount, and a leakage signal is output.

[0049] The leakage detection circuit is connected to a comparator circuit, which is configured as a two-input comparator, whose positive input terminal is connected to the leakage detection circuit signal, and whose reverse input terminal is electrically connected to a reference voltage output circuit, receiving a reference comparison voltage. When the voltage at the positive input terminal is greater than the reference voltage at the reverse input terminal, the comparison output terminal outputs a high level, and when the voltage at the positive input terminal is less than the reference voltage at the reverse input terminal, the comparison output terminal outputs a low level. Figure 4 As shown, in the implementation manner of the present application, the above-mentioned reference comparison voltage can be obtained by voltage division of two resistors connected in series.

[0050] The comparison output end of the two-input comparator is connected to the input end of the alarm circuit, including a 6V alarm power supply, a switch and an alarm device 3. In the embodiment of the present application, the alarm device 3 is configured as a sound and light alarm whose base is connected to the mixer housing, and the switch is configured as an NPN type switching transistor. The base of the switching transistor is electrically connected to the comparison output end of the two-input comparator, the collector is electrically connected to the alarm power supply, and the emitter is electrically connected to the enable end of the sound and light alarm. The sound and light alarm includes a buzzer and an LED light module. When the base of the switching transistor inputs a high level, the alarm circuit is turned on, and the sound and light alarm alarms, warning that the stirring element bearing is worn and needs maintenance or replacement of the bearing. In practice, a multi-stage amplification circuit can be set between the above-mentioned sound and light alarm and the switching transistor as needed to make the sound and light alarm emit light or sound more obvious.

[0051] In order to enhance the anti-interference ability of the leakage detection circuit, an anti-interference circuit is further arranged between the comparison output terminal of the two-input comparator and the alarm circuit, which is implemented through a delay module 41. Only when both input terminals of the AND gate are high level, that is, a continuous high liquid level alarm signal is input, a high level will be output, the switching transistor will be turned on, and the alarm circuit will be turned on, thereby reducing the impact of vibration when the mixer is working.

[0052] The control module 4 can also be connected to a remote alarm module 42, which is not shown in the figure. The remote alarm module 42 is wirelessly connected to the staff's mobile terminal. The remote alarm module 42 outputs the alarm signal to the operator's mobile phone, computer and other mobile terminals. On the one hand, it is convenient to collect detection alarm records, and on the other hand, it is convenient for monitoring personnel to monitor in real time and take timely action.

[0053] The above is only the preferred implementation of the present application. The protection scope of the present application is not limited to the above embodiments. All technical solutions under the concept of the present application belong to the protection scope of the present application. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present application should also be regarded as the protection scope of the present application.

Claims

1. An automatic early warning device for bearing wear of a mixer, characterized in that: It comprises a receiving piece (1) arranged below the mixer bearing for receiving leakage, the receiving piece (1) being detachably connected to the mixer bearing, a detection piece (2) being arranged inside the receiving piece (1), the detection piece (2) outputting a leakage amount signal of the leakage, and an alarm device (3) for early warning being arranged on the mixer; The automatic warning device for bearing wear of a mixer further comprises a control module (4), which is configured to be data-connected with the detection element (2), receive the leakage signal, be control-connected with the alarm device (3), and output a control signal to control the alarm device (3) to send out a warning signal.

2. The automatic early warning device for bearing wear of a mixer according to claim 1 is characterized in that: The material receiving member (1) comprises a material receiving hopper, which is in the shape of a semicircular tube and is sleeved on the mixer bearing. An opening (12) penetrating the tube wall is provided on one side of the material receiving hopper along its length direction, and the width of the opening (12) is greater than the diameter of the mixer bearing.

3. The automatic early warning device for bearing wear of a mixer according to claim 2 is characterized in that: A material receiving groove (11) is provided on the inner wall of the material receiving hopper on the side opposite to the opening (12), and the cross-sectional area of ​​the inner wall of the material receiving groove (11) along the axis direction of the material receiving hopper gradually decreases in the direction away from the axis direction of the material receiving hopper.

4. The automatic early warning device for bearing wear of a mixer according to claim 2 is characterized in that: A threaded hole (14) is provided on one end face of the receiving hopper, a connecting hole is provided on the shaft housing (5) of the mixer bearing, a connecting bolt (15) is provided in the connecting hole, and the connecting bolt (15) passes through the connecting hole and is threadedly connected to the threaded hole (14) on the end face of the receiving hopper.

5. The automatic early warning device for bearing wear of a mixer according to claim 1 is characterized in that: The bottom of the material receiving piece (1) is provided with a through hole (13) penetrating the bottom of the material receiving piece (1).

6. The automatic early warning device for bearing wear of a mixer according to claim 2 is characterized in that: The detection member (2) is configured as a proximity sensor for detecting the liquid level height in the receiving hopper.

7. The automatic early warning device for bearing wear of a mixer according to claim 1 is characterized in that: The alarm device is configured as an audible and visual alarm, and the base of the audible and visual alarm is connected and arranged on the mixer housing.

8. The automatic early warning device for bearing wear of a mixer according to claim 1 is characterized in that: The control module (4) comprises: The leakage detection circuit includes a proximity sensor, which detects and outputs a leakage signal; A comparator circuit, comprising a two-input comparator, wherein a positive input terminal is connected to the leakage detection circuit signal to receive the leakage detection signal, a reverse input terminal is electrically connected to a reference voltage output circuit to receive a reference comparison voltage, and a comparison output terminal outputs a comparison result signal; The alarm circuit includes an alarm power supply, a switch component and an audible and visual alarm. The switch component is configured as a switch transistor. The base of the switch transistor is electrically connected to the comparison output terminal of the two-input comparator, the collector is electrically connected to the alarm power supply, and the emitter is electrically connected to the enable terminal of the audible and visual alarm.

9. The automatic early warning device for bearing wear of a mixer according to claim 8, characterized in that: An anti-interference circuit is arranged between the comparison output terminal of the two-input comparator and the switch element.

10. The automatic early warning device for bearing wear of a mixer according to claim 1, characterized in that: The control module (4) is also connected to a remote alarm module (42), and the remote alarm module (42) is wirelessly connected to a mobile terminal.

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