Overhead wear-resistant speed measuring device

Abstract

The utility model relates to the field of top-mounted velometers, and discloses a top-mounted wear-resistant speed measuring device which comprises a fixing frame, a rotating frame is rotatably mounted on the inner wall of the fixing frame, a speed measuring wheel is rotatably connected to the end, away from the fixing frame, of the rotating frame, and a detector is fixedly mounted at one end of the speed measuring wheel. The center of the detector and the center of the tachometer wheel are located on the same straight line, a sliding groove is formed in the inner wall of the rotating frame, a shielding frame is slidably connected to the inner wall of the sliding groove, a connecting block is fixedly installed at the bottom end of the shielding frame, and the size specification of the inner wall of the sliding groove is matched with the size specification of the surface of the shielding frame. The sliding groove is formed in the surface of the rotating frame, the shielding frame is slidably connected to the inner wall of the sliding groove, and the bottom end of the shielding frame is slidably connected with the surface of the belt wheel, so that impurities and water stains on the top of the belt wheel are shielded by means of the shielding frame, and the situation that the impurities and the water stains enter the bottom end of the tachometer wheel, and consequently the belt wheel is abraded and slips is avoided.

Description

Technical Field

[0001] The present application relates to the field of top-mounted speed measuring devices, and in particular to a top-mounted wear-resistant speed measuring device. Background Art

[0002] The pulley-mounted tachometer is a special tachometer method that uses the rotation of the pulley to measure the speed. As an important component of power transmission, the pulley is used in many mechanical equipment. When the pulley rotates, the operating speed of the entire mechanical system can be known by measuring its rotational speed. This speed measurement method is usually used in conjunction with a tachometer, which can record the rotational speed of the pulley and convert it into an electrical signal or other form of output for observation, recording or control. The principle of the pulley-mounted tachometer is based on the physical movement of the pulley. The operating status of the entire system is reflected by measuring the rotational speed of the pulley. When installing a conventional top-mounted tachometer, one end of the fixed frame is installed in the equipment, and one end of the fixed frame is rotated to connect to the rotating frame. A tachometer is rotatably installed on the inner wall of the rotating frame. The bottom end of the tachometer is slidably connected to the top of the pulley. A detector is installed at one end of the tachometer, and the status of the tachometer is checked with the help of the detector.

[0003] With regard to the above-mentioned related technologies, the inventors believe that, when a conventional top-mounted speedometer is used for detection, a large amount of impurities are likely to remain on the surface of the pulley after the pulley has transported items. When the speed measuring wheel and the pulley surface slide, the impurities are likely to come into contact with the surface of the speed measuring wheel, causing wear on the speed measuring wheel. Moreover, when there are water stains on the surface of the pulley, the speed measuring wheel and the pulley are likely to slip, causing deviation in the detection data.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Utility Model Content

[0005] In order to solve the problem that impurities and water stains on the upper end of the pulley affect the pulley, the present application provides an upper-mounted wear-resistant speed measuring device.

[0006] The top-mounted wear-resistant speed measuring device provided in this application adopts the following technical solution:

[0007] The upper-mounted wear-resistant speed measuring device includes a fixed frame, a rotating frame is rotatably installed on the inner wall of the fixed frame, and the end of the rotating frame away from the fixed frame is rotatably connected to the speed measuring wheel, and a detector is fixedly installed on one end of the speed measuring wheel, and the center of the detector is on the same straight line as the center of the speed measuring wheel. A slide groove is provided on the inner wall of the rotating frame, and a shielding frame is slidably connected to the inner wall of the slide groove. A connecting block is fixedly installed on the bottom end of the shielding frame, and the size specifications of the inner wall of the slide groove are adapted to the size specifications of the surface of the shielding frame. The cross-section of the shielding frame is a "V"-shaped structure, and the shielding frame and the rotating frame are arranged perpendicular to each other.

[0008] Preferably, the top of the connecting block is fixedly connected to a limit spring, the top of the limit spring is fixedly mounted to the bottom end of the rotating frame, and the center of the limit spring and the center of the connecting block are on the same straight line.

[0009] Preferably, the inner wall of the connecting block is rotatably connected to a rotating wheel, and the size of the rotating wheel surface is adapted to the size of the inner wall of the connecting block.

[0010] Preferably, rotating disks are rotatably mounted on both ends of the rotating frame, and the two rotating disks are symmetrically distributed with the rotating frame as the axis. A fan is fixedly connected to one end of the rotating disk away from the rotating frame, and fan blades are rotatably mounted on the inner wall of the fan.

[0011] Preferably, a plurality of slots are provided on the surface of the rotating disk, and the slots are distributed in a circular array with the center of the rotating disk as the axis, and the inner wall of the slot is clamped with a limit block, and the inner wall of the limit block is clamped with a fixing bolt, and the surface of the fixing bolt is threadedly mounted on the inner wall of the rotating frame.

[0012] In summary, this application has the following beneficial technical effects:

[0013] The bottom end of the rotating wheel is slidably connected to the surface of the pulley, so that the friction force between the shield frame and the pulley surface is reduced by the rotating wheel, thereby avoiding wear of the pulley surface by the shield frame; compared with the existing technology, the service life and detection effect of the speed measuring wheel are effectively improved;

[0014] 2. The fan can also be installed on the surface of the rotating frame with the help of a rotating disk, and the inner wall of the fan is rotatably connected with fan blades, so that the fan blades can be controlled to rotate to generate wind flow, and the position of the shielding frame can be cleaned with the help of wind flow, avoiding the accumulation of impurities and water stains at one end of the shielding frame, which may cause blockage at the shielding frame after long-term use. Several slots are provided on the surface of the rotating disk, and the inner walls of the slots are clamped with limit blocks. The inner walls of the limit blocks are clamped with fixing bolts, and the surfaces of the fixing bolts are threadedly connected to the inner wall of the rotating frame, so that the angle of the fan can be adjusted with the help of the rotating disk, and the fixing bolts are rotated to clamp the limit blocks with the inner walls of the slots, thereby fixing the angle of the fan at one end of the rotating disk, which is convenient for adjusting the angle of the fan according to the height of the shielding frame; effectively improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the upper-mounted wear-resistant speed measuring device according to an embodiment of the application;

[0016] Figure 2 This is a schematic diagram of the shielding frame structure of an embodiment of the application;

[0017] Figure 3 is a side structural schematic diagram of an embodiment of the application;

[0018] Figure 4 It is a structural diagram of location A of the application embodiment.

[0019] Explanation of the accompanying symbols: 1. Fixed frame; 2. Rotating frame; 3. Speed ​​measuring wheel; 4. Detector; 5. Shielding frame; 6. Slide groove; 7. Connecting block; 8. Limiting spring; 9. Rotating wheel; 10. Rotating disk; 11. Fan; 12. Fan blade; 13. Slot; 14. Limiting block; 15. Fixing bolt. DETAILED DESCRIPTION

[0020] The following is combined with Figure 1 —4 Provide further details of this application.

[0021] The embodiment of the present application discloses an upper wear-resistant speed measuring device, referring to Figure 1 - Figure 2, including a fixed frame 1. During installation, one end of the fixed frame 1 is installed in the equipment, and one end of the fixed frame 1 is rotatably connected to the rotating frame 2. A speed measuring wheel 3 is rotatably installed on the inner wall of the rotating frame 2. The bottom end of the speed measuring wheel 3 is slidably connected to the top of the pulley. A detector 4 is installed at one end of the speed measuring wheel 3. The status of the speed measuring wheel 3 is checked with the help of the detector 4. A slide groove 6 is provided on the surface of the rotating frame 2. The inner wall of the slide groove 6 is slidably connected with a shielding frame 5. The bottom end of the shielding frame 5 is slidably connected to the surface of the pulley. The impurities and water stains on the top of the pulley are blocked by the shielding frame 5 to prevent impurities and water stains from entering the bottom end of the speed measuring wheel 3, effectively improving the service life and detection effect of the speed measuring wheel 3, and avoiding impurities and water stains from entering the bottom end of the speed measuring wheel 3, causing the pulley to be worn and slipped.

[0022] Reference Figure 2 The top of the connecting block 7 is fixedly connected to the limiting spring 8, and the top of the limiting spring 8 is fixedly installed with the bottom end of the rotating frame 2. The connecting block 7 is pushed by the limiting spring 8, so that the blocking frame 5 at one end of the connecting block 7 is kept in contact with the surface of the pulley, effectively improving the cleaning effect of the blocking frame 5 on the pulley. The inner wall of the connecting block 7 is rotatably connected to the rotating wheel 9, and the bottom end of the rotating wheel 9 is slidably connected to the surface of the pulley. The rotating wheel 9 is used to reduce the friction between the blocking frame 5 and the pulley surface, thereby avoiding the blocking frame 5 from causing wear on the pulley surface.

[0023] Reference Figure 3 - Figure 4 The fan 11 is installed on the surface of the rotating frame 2 with the help of the rotating disk 10, and the inner wall of the fan 11 is rotatably connected with the fan blades 12. The fan 11 controls the fan blades 12 to rotate to generate wind flow, and the position of the shielding frame 5 is cleaned with the help of the wind flow to avoid the accumulation of impurities and water stains at one end of the shielding frame 5, which causes the shielding frame 5 to be blocked after long-term use. A number of slots 13 are provided on the surface of the rotating disk 10, and the inner wall of the slot 13 is clamped with a limit block 14. The inner wall of the limit block 14 is clamped with a fixing bolt 15, and the surface of the fixing bolt 15 is threadedly connected to the inner wall of the rotating frame 2. The angle of the fan 11 is adjusted with the help of the rotating disk 10, and the fixing bolt 15 is rotated to clamp the limit block 14 with the inner wall of the slot 13, thereby fixing the angle of the fan 11 at one end of the rotating disk 10, which is convenient for adjusting the angle of the fan 11 according to the height of the shielding frame 5.

[0024] The bottom end of the rotating wheel 9 is slidably connected to the surface of the pulley, so as to reduce the friction between the shielding frame 5 and the pulley surface with the help of the rotating wheel 9, thereby preventing the shielding frame 5 from causing wear and slipping on the pulley surface.

[0025] The fan 11 can also be installed on the surface of the rotating frame 2 with the help of the rotating disk 10, and the inner wall of the fan 11 is rotatably connected with the fan blades 12, so that the fan 11 can control the rotation of the fan blades 12 to generate wind flow, and the position of the shielding frame 5 can be cleaned with the help of the wind flow, avoiding the accumulation of impurities and water stains at one end of the shielding frame 5, which may cause blockage at the shielding frame 5 after long-term use. A number of slots 13 are provided on the surface of the rotating disk 10, and the inner wall of the slot 13 is clamped with a limit block 14. The inner wall of the limit block 14 is clamped with a fixing bolt 15, and the surface of the fixing bolt 15 is threadedly connected to the inner wall of the rotating frame 2, so that the angle of the fan 11 can be adjusted with the help of the rotating disk 10, and the fixing bolt 15 is rotated to clamp the limit block 14 with the inner wall of the slot 13, thereby fixing the angle of the fan 11 at one end of the rotating disk 10, which is convenient for adjusting the angle of the fan 11 according to the height of the shielding frame 5.

[0026] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An upper wear-resistant speed measuring device, comprising a fixing frame (1), characterized in that: A rotating frame (2) is rotatably mounted on the inner wall of the fixed frame (1); an end of the rotating frame (2) away from the fixed frame (1) is rotatably connected to a speed measuring wheel (3); a detector (4) is fixedly mounted on one end of the speed measuring wheel (3); the center of the detector (4) and the center of the speed measuring wheel (3) are on the same straight line; a sliding groove (6) is provided on the inner wall of the rotating frame (2); a shielding frame (5) is slidably connected to the inner wall of the sliding groove (6); and a connecting block (7) is fixedly mounted on the bottom end of the shielding frame (5).

2. The top-mounted wear-resistant speed measuring device according to claim 1, characterized in that: The dimensions of the inner wall of the chute (6) are compatible with the dimensions of the surface of the shielding frame (5); the cross section of the shielding frame (5) is in a V-shaped structure, and the shielding frame (5) and the rotating frame (2) are arranged perpendicular to each other.

3. The top-mounted wear-resistant speed measuring device according to claim 1, characterized in that: The top of the connecting block (7) is fixedly connected to a limit spring (8), the top of the limit spring (8) is fixedly mounted to the bottom end of the rotating frame (2), and the center of the limit spring (8) and the center of the connecting block (7) are on the same straight line.

4. The top-mounted wear-resistant speed measuring device according to claim 1, characterized in that: The inner wall of the connecting block (7) is rotatably connected to a rotating wheel (9), and the size of the surface of the rotating wheel (9) is compatible with the size of the inner wall of the connecting block (7).

5. The top-mounted wear-resistant speed measuring device according to claim 1, characterized in that: Rotating disks (10) are rotatably mounted on both ends of the rotating frame (2), and the two rotating disks (10) are symmetrically distributed with the rotating frame (2) as an axis. One end of the rotating disk (10) away from the rotating frame (2) is fixedly connected to a fan (11), and a fan blade (12) is rotatably mounted on the inner wall of the fan (11).

6. The top-mounted wear-resistant speed measuring device according to claim 5, characterized in that: The surface of the rotating disk (10) is provided with a plurality of slots (13), which are distributed in a circular array with the center of the rotating disk (10) as the axis, and the inner wall of the slot (13) is clamped with a limit block (14), and the inner wall of the limit block (14) is clamped with a fixing bolt (15), and the surface of the fixing bolt (15) is threadedly mounted on the inner wall of the rotating frame (2).

Images