Machine tool gearbox bearing detection device

Abstract

The utility model discloses a machine tool gearbox bearing detection device. The temperature sensor is installed on a bearing seat through a sensor fixing clamp and used for detecting the temperature of a radial bearing and reflecting whether the radial bearing breaks down or not, and the displacement sensor is installed on a gearbox body and used for detecting the distance between a shaft head and the gearbox body and reflecting whether a thrust bearing breaks down or not. A detection hole convenient for the temperature sensor to detect the temperature is formed in the bearing seat; the sensor fixing clamp comprises a fixing clamp body and an opening-closing body, one end of the opening-closing body is hinged to the fixing clamp body, the opening-closing body is opened through jacking of a take-off spring, and the opening-closing body is closed and locked through a locking pin. Clamping holes are formed in the corresponding positions of the fixing clamp body and the opening-closing body. The temperature sensor and the displacement sensor are connected with the input end of the PLC controller, and the output end of the PLC controller is connected with the alarm. According to the utility model, the thrust bearing and the radial bearing can be detected in real time, abnormity can be found in time, the daily detection automation function of equipment is improved, and the fault prevention capability of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bearing detection device for the bearings on both sides of the transmission shaft in the gearbox of a machine tool. BACKGROUND

[0002] The transmission shaft inside the gearbox of a machine tool mainly transmits power and adjusts the transmission ratio, and the specific structure is shown in the figure. Figure 1 The transmission shaft 1 has a thrust bearing 2 and a radial bearing 3 arranged in sequence at both ends, one end is a shaft head 4, and the radial bearing 3 is installed inside the bearing seat 8. The thrust bearing 2 and the radial bearing 3 will age with the increase of the service life, which will affect the transmission of the transmission shaft 2. Therefore, regular bearing inspection is required.

[0003] In the prior art, manual inspection is mainly relied on. Due to the sealing of the gearbox body of the machine tool, the reduction gearbox needs to be opened for visual observation during manual inspection, which leads to low inspection efficiency. In addition, visual observation cannot timely discover the slight changes in the early stage of aging, so the bearing failure cannot be timely prevented, and production safety is affected. UTILITY MODEL CONTENT

[0004] The utility model discloses a bearing detection device for the gearbox of a machine tool, which can detect the thrust bearing and the radial bearing in real time, discover abnormalities in time, improve the automatic detection function of the equipment in daily use, and improve the equipment failure prevention capability.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] A bearing detection device for the gearbox of a machine tool comprises a temperature sensor for detecting the temperature of the radial bearing and reflecting whether the radial bearing is faulty, which is installed on the bearing seat through a sensor fixing clamp, and a displacement sensor for detecting the distance between the shaft head and the gearbox body and reflecting whether the thrust bearing is faulty, which is installed on the gearbox body, and the bearing seat is provided with a detection hole for facilitating the temperature detection of the temperature sensor; the temperature sensor and the displacement sensor are connected with the input end of a PLC controller and connected with an alarm at the output end.

[0007] The further improvement of the utility model technical scheme is that the sensor fixing clamp comprises a fixing clamp body fixed on the bearing seat or the gearbox body and an opening and closing body hinged at one end of the fixing clamp body and opened by a spring and closed by a locking pin, and the fixing clamp body is recessed downward and the opening and closing body is raised upward at the corresponding position to form a clamping hole for clamping the sensor.

[0008] The further improvement of the utility model technical scheme lies in that: a plurality of fastening plates supported by the fastening spring through the bottom are distributed on the inner wall of the clamping hole in the circumferential direction, and the two ends of the fastening spring are fixed on the inner wall of the clamping hole and the bottom of the fastening plate respectively.

[0009] The further improvement of the utility model technical scheme lies in that: the length of the fastening plate is same with the depth of the clamping hole and has a certain arc along the circumferential direction of the clamping hole.

[0010] The further improvement of the utility model technical scheme lies in that: the hinged end of the fixed clamp body is raised to the top to form a hinged seat, the hinged end of the opening and closing body is hinged on the hinged seat through a hinge shaft, and the top of the hinged seat is a circular arc structure.

[0011] The further improvement of the utility model technical scheme lies in that: the position close to the hinged end of the opening and closing body is raised upward to form a containing cavity containing the take-off spring, and the top end of the take-off spring is fixed on the inner wall of the containing cavity and the bottom end is a free end.

[0012] The further improvement of the utility model technical scheme lies in that: the hinged end of the fixed clamp body is raised to the top to form a hinged seat, the hinged end of the opening and closing body is hinged on the hinged seat through a hinge shaft, and the top of the hinged seat is a circular arc structure.

[0013] The further improvement of the utility model technical scheme lies in that: a plurality of pin holes are arranged on the hinged end of the opening and closing body in the vertical direction.

[0014] The further improvement of the utility model technical scheme lies in that: the bottom of the fixed clamp body is vertically fixed with a supporting plate having a supporting function, the bottom of the supporting plate is vertically fixed with a mounting seat, and the mounting seat is provided with mounting holes for facilitating bolt fixation.

[0015] Due to the adoption of the above technical scheme, the utility model has the following technical progress:

[0016] The utility model opens detection hole on bearing seat, installs temperature sensor to detect temperature in detection hole, and then reflects temperature of radial bearing, when radial bearing is worn, temperature will be increased, whether radial bearing is failure is reflected through temperature detection. The displacement sensor installed on the gearbox body is used for measuring the distance between the shaft head and the gearbox body, when the thrust bearing is worn, axial movement will occur, which causes the displacement of the transmission shaft, and whether the thrust bearing is failure is reflected through displacement measurement; even if the radial bearing and the bearing seat have certain fixing effect on the transmission shaft, but when the thrust bearing is failure, the fixing effect is not enough to resist the axial movement of the transmission shaft, so that the transmission shaft is displaced.

[0017] The utility model discloses through temperature sensor and displacement sensor determination signal variation, stipulate temperature and displacement threshold value, exceed limit value through PLC controller control alarm and send early warning to the real -time detection of thrust bearing and radial bearing, in time discover unusual, promote equipment daily detection automation function, improve equipment failure prevention ability.

[0018] The utility model discloses through sensor fixed clamp to fixed sensor, be provided with clamping hole on sensor fixed clamp, conveniently clamping sensor, the fastening spring and fastening plate that set up in clamping hole can adjust according to the size of sensor, can satisfy the clamping of sensor of different size to a certain extent, in addition, the pin hole of the lug on the fixed clamp body opening and closing end sets up multiple along the vertical direction, can select different pin hole according to the size of sensor, can further satisfy the clamping of sensor of different size.

[0019] The utility model discloses setting up on the open -and -close body and setting up the accommodating cavity on the open -and -close body, can accommodate the take -out locking pin through the take -out locking pin, and the open -and -close body will automatically pop up through the take -off spring, and the take -out locking pin is convenient for the take -out of sensor, and the accommodating cavity can accommodate the take -off spring, and the sensor fixed clamp is better fixed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the installation schematic diagram of the shaft and bearing in prior art machine tool gearbox;

[0021] Figure 2 It is the structure schematic diagram of the utility model;

[0022] Figure 3 It is the structure schematic diagram of sensor fixed clamp of the utility model;

[0023] Figure 4 It is the structure schematic diagram of fixed clamp body and open -and -close body in sensor fixed clamp of the utility model;

[0024] Figure 5 It is the utility model Figure 4 The enlarged view of A part in the utility model;

[0025] 1, transmission shaft, 2, thrust bearing, 3, radial bearing, 4, shaft head, 5, temperature sensor, 6, displacement sensor, 7, sensor fixed clamp, 7-1, fixed clamp body, 7-2, open -and -close body, 7-3, articulated axle, 7-4, take -off spring, 7-5, clamping hole, 7-6, fastening plate, 7-7, fastening spring, 7-8, locking pin, 7-9, pin hole, 7-10, support plate, 7-11, mounting seat, 8, bearing seat, 9, PLC controller, 10, alarm. CONCRETE IMPLEMENTATION

[0026] The utility model will be further explained in detail in combination with examples:

[0027] The utility model discloses a machine tool gearbox bearing detection device mainly applies to bearing detection in machine tool gearbox, and the mounting structure of transmission shaft and bearing in machine tool gearbox is as shown in Figure 1 The both ends of transmission shaft 1 are sequentially provided with thrust bearing 2 and radial bearing 3 respectively, and one end is shaft head 4, and radial bearing 3 is installed inside bearing seat 8. With the increase of service life, thrust bearing 2 and radial bearing 3 have bearing aging phenomenon, and further affect the transmission of transmission shaft 2. Therefore, regular bearing inspection is needed, and the structure of the utility model is designed to carry out bearing detection in real time.

[0028] As shown in Figure 2 A machine tool gearbox bearing detection device, comprising temperature sensor 5 installed on bearing seat 8 through sensor fixing clamp 7 and displacement sensor 6 installed on gearbox body. Bearing seat 8 is provided with detection hole 13, and temperature sensor 5 is fixed through sensor fixing clamp 7 and detects the temperature of radial bearing 3 through detection hole 13. When radial bearing wears, temperature will rise, and temperature detection can reflect whether radial bearing 3 is faulty. Displacement sensor 6 is used to detect the distance between shaft head 4 and gearbox body. When thrust bearing wears, axial movement will occur, resulting in displacement of transmission shaft. Displacement measurement can reflect whether thrust bearing is faulty. Even though radial bearing and bearing seat have certain fixing effect on transmission shaft, but when thrust bearing fails, the fixing effect is not enough to resist the axial movement of transmission shaft, so that the transmission shaft is displaced.

[0029] Temperature sensor 5 and displacement sensor 6 are connected with the input end of PLC controller 9, and the output end is connected with alarm 10. Temperature sensor and displacement sensor measure signal change, set temperature and displacement threshold, and alarm is sent through PLC controller when the limit value is exceeded. Real-time detection of thrust bearing and radial bearing can find abnormalities in time, improve the automatic function of daily detection of equipment, and improve the fault prevention ability of equipment.

[0030] As shown in Figures 3-5 Sensor fixing clamp 7 includes fixing clamp body 7-1 fixed on bearing seat 8 or gearbox body and opening and closing body 7-2 hinged to one end of fixing clamp body 7-1 and capable of opening and locking. The bottom of fixing clamp body 7-1 is vertically fixed with support plate 7-10 for supporting, the bottom of support plate 7-10 is vertically fixed with mounting seat, mounting holes are arranged on the mounting seat, and the mounting seat is fixed through bolts. The position of sensor detection head can be adjusted by adjusting the height of support plate 7-10.

[0031] The clamping part of the fixed clamp body 7-1 is concave downward, and the corresponding position of the opening and closing body 7-2 is convex upward. When the two are closed, a clamping hole 7-5 is formed for clamping the sensor. A plurality of fastening plates 7-6 are distributed on the inner wall of the clamping hole 7-5 in the circumferential direction. The fastening plates 7-6 are supported by fastening springs 7-7, and the two ends of the fastening springs 7-7 are fixed to the inner wall of the clamping hole 7-5 and the bottom of the fastening plate 7-6 respectively. The length of the fastening plate 7-6 is the same as the depth of the clamping hole 7-5 and has a certain arc along the circumferential direction of the clamping hole 7-5. The fastening spring and the fastening plate can be adjusted according to the size of the sensor, and to a certain extent, it can meet the clamping of sensors of different sizes.

[0032] The opening and closing end of the fixed clamp body 7-1 is convex to the top to form a protrusion, which cooperates with the hinged end of the opening and closing body 7-2. Pin holes 7-9 are provided on the protrusion and the hinged end of the opening and closing body 7-2. Latching is achieved by inserting the locking pin 7-8, which is used to clamp the sensor. There are a plurality of pin holes 7-9 on the protrusion in the vertical direction. Different pin holes can be selected according to the size of the sensor, which can further meet the clamping of sensors of different sizes.

[0033] The hinged end of the fixed clamp body 7-1 is convex to the top to form a hinge seat. The hinged end of the opening and closing body 7-2 is hinged to the hinge seat through the hinge shaft 7-3, and the top of the hinge seat is a circular arc structure, which facilitates the rotation of the opening and closing body 7-2.

[0034] The opening and closing body 7-2 is provided with a jump spring 7-4 near the hinged end. After the locking pin 7-8 is removed, the opening and closing body 7-2 will be automatically popped up by the jump spring 7-4, which facilitates the removal of the sensor. The opening and closing body 7-2 is convex upward to form a containing cavity, which can accommodate the jump spring. The top end of the jump spring 7-4 is fixed to the inner wall of the containing cavity, and the bottom end is a free end. The setting of the containing cavity facilitates better fixation of the sensor fixing clamp.

Claims

1. A machine tool gearbox bearing inspection device, characterised in that: The temperature sensor (5) and the displacement sensor (6) are connected with the input end of the PLC controller (9) and the output end is connected with the alarm (10).

2. A machine tool gearbox bearing inspection device according to claim 1, characterised in that: The clamping hole (7-5) is formed by the downward recess of the fixed clamping body (7-1) and the upward protrusion of the opening and closing body (7-2) at the corresponding position.

3. A machine tool gearbox bearing inspection device according to claim 2, characterised in that: The fastening plate (7-6) is supported by the fastening spring (7-7) at the bottom.

4. A machine tool gearbox bearing inspection device according to claim 3, characterised in that: The length of the fastening plate (7-6) is the same as the depth of the clamping hole (7-5) and has a certain arc along the circumferential direction of the clamping hole (7-5).

5. A machine tool gearbox bearing inspection device according to claim 2, characterised in that: The hinged end of the fixed clamping body (7-1) is protruded upward to form a hinged seat, and the hinged end of the opening and closing body (7-2) is hinged to the hinged seat through the hinge shaft (7-3), and the top of the hinged seat is a circular arc structure.

6. A machine tool gearbox bearing inspection device according to claim 2, characterised in that: The opening and closing body (7-2) is protruded upward to form a containing cavity near the hinged end, and the top end of the bounce spring (7-4) is fixed to the inner wall of the containing cavity and the bottom end is a free end.

7. A machine tool gearbox bearing inspection apparatus according to claim 2, characterised in that: The opening end of the fixed clamping body (7-1) is protruded upward to form a protruding block matched with the hinged end of the opening and closing body (7-2), and the protruding block and the hinged end of the opening and closing body (7-2) are both provided with pin holes (7-9) capable of inserting the locking pin (7-8).

8. A machine tool gearbox bearing inspection device according to claim 7, characterised in that: The pin holes (7-9) on the protruding block are arranged in the vertical direction.

9. A machine tool gearbox bearing inspection apparatus according to claim 2, characterised in that: The bottom of the fixed clamping body (7-1) is vertically fixed with a supporting plate (7-10) for supporting, and the bottom of the supporting plate (7-10) is vertically fixed with a mounting seat, and the mounting seat is provided with mounting holes for conveniently fixing bolts.

Images