Fluted disc distance measuring device of creeping detection device

Abstract

A tooth disc distance measuring device of a wriggling detection device comprises a clamping plate seat which is clamped on a large shaft tooth disc. A transmission mechanism is mounted in the clamping plate seat; the input end of the transmission mechanism is connected with the scale knob; the output end of the transmission mechanism drives the lead screw to move left and right, and a movable plate is fixed to the end of the lead screw, located in a groove of the end plate and right opposite to a probe of the wriggling detection device. According to the tooth disc distance measuring device of the creeping detection device, personnel operation can be simplified, and the distance measuring accuracy can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ranging device, in particular to a peristalsis detection device gear disc ranging device. BACKGROUND

[0002] In the operation and maintenance work of the hydroelectric generating set, checking the distance between the probe of the peristalsis detection device and the gear disc of the large shaft is an important work, and the probe of the peristalsis detection device being too close or too far will lead to the decline of the detection performance. Once the unit enters the peristaltic state and the peristalsis detection device signal is missed, dry friction and tile burning may be caused. The installation distance between the peristalsis detection probe and the gear disc of a certain giant hydroelectric station hydroelectric generating set is generally 2-3mm, and the commonly used ranging mode is to use a plug gauge to measure the distance. Due to the size limitation of the plug gauge and the characteristics of elastic deformation, the existing ranging mode is not convenient and accurate enough. UTILITY MODEL CONTENTS

[0003] The technical problem to be solved by the utility model is to provide a peristalsis detection device gear disc ranging device, which simplifies personnel operation and improves ranging accuracy.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A peristalsis detection device gear disc ranging device, comprising a clamping plate seat, the clamping plate seat is clamped on the gear disc of the large shaft;

[0006] The clamping plate seat is internally provided with a transmission mechanism, the input end of the transmission mechanism is connected with a scale knob; the output end of the transmission mechanism drives a lead screw to move left and right, the end head of the lead screw is fixedly provided with a moving plate, and the moving plate is located in the groove of the end plate and faces the probe of the peristalsis detection device.

[0007] The clamping plate seat comprises a left clamping seat and a right clamping plate, and the left clamping seat and the right clamping plate are connected with the end plate at the front end; the width between the left clamping seat and the right clamping plate matches the width of the gear disc of the large shaft.

[0008] The transmission mechanism is installed in the left clamping seat, and the transmission mechanism comprises a first gear coaxially connected with the scale knob, the first gear is engaged with a second gear, the second gear is coaxial with a first bevel gear; the first bevel gear is engaged with a second bevel gear, and the second bevel gear is rotatably installed on the left clamping seat and is threadedly connected with the lead screw.

[0009] The lead screw is freely arranged in the through hole of the left clamping seat and is connected with the moving plate at the front end through a square head; the square head is located in a slot and matches the slot, and the slot is communicated with the through hole.

[0010] The diameter of the first gear is smaller than the diameter of the second gear.

[0011] The thickness of the moving plate is consistent with the thickness of the end plate, and in the initial reset state, the front end surface of the moving plate is flush with the front end surface of the end plate.

[0012] The left clamping seat and the right clamping plate are provided with gaskets on opposite surfaces.

[0013] The left clamping seat and the right clamping plate are provided with gaskets on opposite surfaces.

[0014] The clamping plate seat is made of metal material.

[0015] The lead screw is located in the through hole of the left clamping seat, and the tail of the lead screw is in contact with the inner bottom surface of the through hole in the initial reset state.

[0016] The utility model provides a kind of peristalsis detection device gear disc ranging device, with following technical effects: by using clamping plate seat, clamping plate seat is clamped on large shaft gear disc, so it is convenient to position;By setting transmission mechanism, mobile plate telescopic movement can be driven and be in abutment with probe, so the distance of mobile plate movement and the thickness of mobile plate are the distance between probe and large shaft gear disc;And the distance of mobile plate movement is proportional to the number of turns or angle of scale knob rotation, so when the device operation is completed, the number of turns of scale knob rotation can be calculated to obtain the distance of mobile plate movement, and then obtain the distance between probe and large shaft gear disc. Range table can display number of turns (for example, the number of turns is 0.5 turns when rotating 180 degrees, and the number of turns is 0.25 turns when rotating 90 degrees), and the distance of mobile plate movement can be displayed according to intermediate calculation structure;The distance between probe and large shaft gear disc can be directly displayed according to final structure. It is convenient and reliable to ensure detection. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described in connection with the drawings and embodiments:

[0018] Figure 1 It is the top view of the utility model.

[0019] Figure 2 It is Figure 1

[0020] Figure 3 It is the front view of the utility model.

[0021] Figure 4 It is the external schematic view of the utility model.

[0022] Figure 5 It is the arrangement schematic view of large shaft gear disc and probe.

[0023] In the drawing: left clamping seat 1, right clamping plate 2, end plate 3, transmission mechanism 4, lead screw 5, mobile plate 6, recess 7, probe 8, large shaft gear disc 9, scale knob 10, gasket 11, range table 12. DETAILED DESCRIPTION

[0024] For example, Figures 1-2 ​As shown, a kind of peristalsis detection device gear disc ranging device, including left clamping seat 1, right clamping plate 2, left clamping seat 1, right clamping plate 2 front end is made into an integral whole with end plate 3, and constitutes clamping plate seat. Clamping plate seat can be clamped on the large shaft gear disc 9 (specifically the shell on the large shaft gear disc). The through hole along the length direction is provided in left clamping seat 1, and screw rod 5 is located in the through hole and can move along the axis direction of the through hole. After initial reset state, the tail end of screw rod 5 is in contact with the bottom surface in the through hole. The first end of screw rod 5 is fixed with square head, and square head is slidably connected with the slot of left clamping seat 1, and the slot is communicated with the through hole of left clamping seat 1. One side of square head is fixedly connected with moving plate 6, and moving plate 6 is located in the recess 7 of end plate 3 and is opposite to probe 8 of peristalsis detection device. The thickness of moving plate 6 is consistent with the thickness of end plate 3. And in initial reset state, the end surface of moving plate 6 is flush with the end surface of end plate 3. One side of screw rod 5 is provided with transmission mechanism 4, the input end of transmission mechanism 4 is connected with scale knob 10, scale knob 10 is provided with pointer, and range table 12 is provided on the left clamping seat 1 outside scale knob 10, the pointer is matched with range table 12, to facilitate indicating the distance of large shaft gear disc 9 to probe 8. The output end of transmission mechanism 4 drives screw rod 5 to move left and right.

[0025] As shown, Figures 1-2 Here, transmission mechanism 4 includes first gear 4.1 coaxially connected with scale knob 10, first gear 4.1 is engaged with second gear 4.2, second gear 4.2 is installed on rotating shaft 4.3 by means of flat key and is fixedly connected with rotating shaft 4.3, and rotating shaft 4.3 is rotatably installed on left clamping seat 1. First bevel gear 4.4 is also installed on rotating shaft 4.3, first bevel gear 4.4 is engaged with second bevel gear 4.5, and second bevel gear 4.5 is rotatably installed on left clamping seat 1. The inner ring of second bevel gear 4.5 is threadedly connected with screw rod 5.

[0026] As shown, Figure 1 The distance L between large shaft gear disc 9 and probe 8 is L=L1+L2, L1 is the thickness of moving plate 6, and L2 is the distance that the end surface of moving plate 6 moves to the end surface of probe 8. L1 is known, and L2 is the distance that screw rod 5 moves forward and backward.

[0027] The distance L2 that screw rod 5 moves forward and backward can be obtained by calculation:

[0028] The pitch of screw rod 5 is P, the number of turns of second bevel gear 4.5 is N2, and L2=P N2;

[0029] Make first bevel gear 4.4 and second bevel gear 4.5 the same size, and the number of turns of first bevel gear 4.4 is also N2;

[0030] Since the first bevel gear 4.4 is coaxial with the second gear 4.2, the number of revolutions of the second gear 4.2 is also N2; the number of teeth of the second gear 4.2 is Z2, and the number of teeth of the first gear 4.1 is Z1; the number of revolutions is inversely proportional to the number of teeth of the gear, that is = ; then L2= ;

[0031] Since Z1, Z2, and p are known, N1 is proportional to L2 here, when the number of revolutions N1 of the first gear 4.1 is known through the scale knob 10, L2 can be obtained, and then the distance L between the large shaft tooth disc 9 and the probe 8 can be obtained.

[0032] In the device, through reasonable design of the transmission mechanism 4, N1<1, that is, after rotating a certain angle, the moving plate 6 can contact the probe 8. For example: assuming that the moving plate 6 contacts the probe 8 after rotating 180 degrees (N1=0.5); at this time, L2=0.5 Since N1 is proportional to L2, it is directly corresponding to indicate the length value on the scale table 12, which is more intuitive to use.

[0033] In addition, in the present application, the pointer on the scale knob 10 is initially vertically upward. The initial position corresponding to the initial value on the scale table 12 is L1, for example, the thickness L1 of the moving plate 6 is 2mm, and the pointer on the scale knob 10 initially points to 2mm. Clockwise rotation of the scale knob 10 gradually increases the value on the scale table 12, and the value finally indicated by the pointer on the scale knob 10 is the actual distance L between the large shaft tooth disc 9 and the probe 8. This indication is simpler and does not require calculation.

[0034] As shown in Figure 1 , the clamping plate seat is made of metal, and the width between the left clamping seat 1 and the right clamping plate 2 matches the width of the large shaft tooth disc 9. The thickness of the right clamping plate 2 is relatively thin compared to the thickness of the left clamping seat 1, and has a certain elasticity, which can be conveniently stretched outward by about 5 degrees to facilitate insertion and clamping.

[0035] As shown in Figure 1 , the left clamping seat 1 and the right clamping plate 2 are provided with a gasket 11 on one side, and the gasket 11 is made of sponge or rubber and has a certain elasticity, which can be installed on the large shaft tooth disc 9 to realize clamping.

[0036] Working principle and process: as Figure 1As shown, the device is clamped on the large shaft tooth disc 9, and the left clamp 1 and the right clamp 2 are used to clamp the device on the large shaft tooth disc 9, and the end plate 3 of the device is attached to the end face of the large shaft tooth disc 9. Clockwise rotate the scale knob 10, and drive the lead screw 5 to move towards the probe 8 through the transmission mechanism 4, and the moving plate 6 moves synchronously, and stops when the moving plate 6 is attached to the end face of the probe 8. At this time, the value indicated by the pointer on the scale knob 10 is the actual distance L between the large shaft tooth disc 9 and the probe 8.

Claims

1. A peristalsis detection device with a toothed disc ranging device, characterized in that: Includes a clamping plate seat, which is clamped onto the large shaft gear plate (9); The clamp seat is equipped with a transmission mechanism (4), the input end of the transmission mechanism (4) is connected to the scale knob (10); the output end of the transmission mechanism (4) drives the lead screw (5) to move left and right, and the end of the lead screw (5) is fixed with a moving plate (6), which is located in the groove (7) of the end plate (3) and is directly opposite to the probe (8) of the peristalsis detection device.

2. The toothed disc ranging device for peristalsis detection according to claim 1, characterized in that: The clamping seat includes a left clamping seat (1) and a right clamping plate (2). The front ends of the left clamping seat (1) and the right clamping plate (2) are connected to the end plate (3). The width between the left clamping seat (1) and the right clamping plate (2) matches the width of the large shaft gear plate (9).

3. The toothed disc ranging device for peristalsis detection according to claim 2, characterized in that: The transmission mechanism (4) is installed in the left clamp (1). The transmission mechanism (4) includes a first gear (4.1) coaxially connected to the scale knob (10). The first gear (4.1) meshes with the second gear (4.2). The second gear (4.2) is coaxial with the first bevel gear (4.4). The first bevel gear (4.4) meshes with the second bevel gear (4.5). The second bevel gear (4.5) is rotatably installed on the left clamp (1) and threadedly connected to the lead screw (5).

4. The toothed disc ranging device for peristalsis detection according to claim 3, characterized in that: The lead screw (5) is freely disposed in the through hole of the left clamp (1) and its front end is connected to the moving plate (6) through a square head; the square head is located in the slot and matches the slot, and the slot is connected to the through hole.

5. The toothed disc ranging device for peristalsis detection according to claim 4, characterized in that: The diameter of the first gear (4.1) is smaller than the diameter of the second gear (4.2).

6. The toothed disc ranging device for peristalsis detection according to claim 5, characterized in that: The thickness of the movable plate (6) is the same as that of the end plate (3), and in the initial reset state, the front end face of the movable plate (6) is flush with the front end face of the end plate (3).

7. The toothed disc ranging device for peristalsis detection according to claim 6, characterized in that: The width between the left clamp (1) and the right clamp (2) matches the outer shell of the large shaft gear plate (9).

8. The toothed disc ranging device for peristalsis detection according to claim 7, characterized in that: A gasket (11) is provided on the opposite side of the left clamp (1) and the right clamp (2).

9. The toothed disc ranging device for a peristalsis detection device according to claim 8, characterized in that: The clamp base is made of metal.

10. The toothed disc ranging device for a peristalsis detection device according to claim 9, characterized in that: The lead screw (5) is located in the through hole of the left clamp (1), and in the initial reset state, the tail of the lead screw (5) is in contact with the bottom surface of the through hole.

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