Rotating speed monitoring system of screw conveyor center driving speed reducer

Abstract

The utility model relates to the technical field of speed reducers, in particular to a screw conveyor center drive speed reducer rotating speed monitoring system which comprises a sensor support, an inductive sensor and an induction screw. The sensor support is fixedly installed on one side of the outer end face of a transparent cover at the input end of the speed reducer, and a threaded hole corresponding to a gear shaft at the input end of the speed reducer is formed in the sensor support. The inductive sensor is in threaded connection in a threaded hole of the sensor support, and the inner end of the inductive sensor radially corresponds to a gear shaft at the input end of the speed reducer; a lead of the inductive sensor penetrates out of the side wall of the mounting flange at the input end of the speed reducer; the induction screws are arranged at the two radial ends of the outer circumferential end face of the speed reducer input end gear shaft respectively and correspond to the inductive sensors in position. The device is integrated at the input end of the speed reducer, monitors the rotating speed of the input end of the speed reducer, and further monitors and adjusts the rotating speed of spiral blades of the screw conveyor, so that the aim of adjusting the deslagging efficiency of the screw conveyor is fulfilled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer technical field especially relates to a spiral machine center drive speed reducer rotating speed monitoring system. BACKGROUND

[0002] The spiral conveyor is an important component of the shield machine, is usually installed in the shield tail of the shield machine, and is used for pushing out the gravel, slag and mud and the like from the soil bin to realize the function of slagging through the rotation of the spiral blade and cooperation with the shell.

[0003] The spiral machine center drive speed reducer is installed at the tail of the spiral conveyor, the power of the hydraulic motor is transmitted to the spiral blade to drive the rotation of the spiral blade, and the rotating speed of the spiral blade directly affects the efficiency of the slagging, so the rotating speed needs to be monitored.

[0004] At present, the rotating speed is usually monitored by calculating the flow of the hydraulic motor or directly measuring the spiral blade, but the rotating speed monitoring method has the problems of calculation error and inaccurate measurement caused by excessive vibration. SUMMARY

[0005] In view of the above problems, the utility model discloses a spiral machine center drive speed reducer rotating speed monitoring system, the rotating speed of the input end of the speed reducer is monitored through integration in the input end of the speed reducer, and then the rotating speed of the spiral blade of the spiral machine is monitored and adjusted, so that the purpose of adjusting the slagging efficiency of the spiral machine is achieved.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] The spiral machine center drive speed reducer rotating speed monitoring system comprises a sensor support, an inductive sensor and a sensing screw, the sensor support is fixedly installed on one side of the outer end face of the cover of the input end of the speed reducer, a threaded hole corresponding to the gear shaft of the input end of the speed reducer is formed in the sensor support, the inductive sensor is threadedly connected in the threaded hole of the sensor support and the inner end of the inductive sensor corresponds to the gear shaft of the input end of the speed reducer in the radial direction, the wire of the inductive sensor is led out from the side wall of the mounting flange of the input end of the speed reducer, and the sensing screws are arranged at the radial ends of the outer circumferential end face of the gear shaft of the input end of the speed reducer and correspond to the positions of the inductive sensor.

[0008] Further, a threaded hole is formed in the middle part of the side wall of the mounting flange of the input end of the speed reducer, the wire of the inductive sensor is led out through the threaded hole, a gland is mounted outside the threaded hole, and the wire of the inductive sensor is led through the gland and locked.

[0009] Further, the inductive sensor is locked between the thin nut and the sensor support.

[0010] Further, the inductive screw is modified from a common screw, that is, the anticorrosion coating of the screw head flat end is polished off and a rustproof layer is repainted.

[0011] Further, a spring washer is arranged between the connection of the inductive screw and the input gear shaft of the speed reducer.

[0012] Further, when the inner end of the inductive sensor is radially opposite to the screw head flat end of the inductive screw, the distance x between the two is 1-1.5mm.

[0013] Compared with the prior art, the inductive sensor has the following beneficial effects:

[0014] 1. The inductive sensor has simple structure and is integrated at the input end of the speed reducer, and has no influence on the internal structure of the speed reducer.

[0015] 2. The inductive sensor can be directly configured in the design stage of the speed reducer structure, and can be increased when the old machine type is modified, and has strong compatibility.

[0016] 3. The inductive sensor is simple to install, and fully considers the conditions of anti-loosening, dustproof and waterproof.

[0017] 4. The inductive sensor has simple sensor sensing distance adjustment, and does not need complicated operation. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 Fig. 4 is a side view of the structure of the inductive sensor connected with the input end of the speed reducer.

[0019] Fig. 2 Fig. 5 is a front view of the structure of the inductive sensor connected with the input end of the speed reducer.

[0020] Fig. 3 Fig. 6 is a structure diagram of a sensor support.

[0021] Among them, the reference signs: 1-gear shaft; 2-sensor support; 3-thin nut; 4-inductive sensor; 5-Glans head; 6-installation flange; 7-transparent cover; 8-inductive screw; 9-spring washer. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0023] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.

[0024] See attached Figs. 1-3 The present invention proposes a system for monitoring the speed of a centrally driven reducer for a screw conveyor, comprising a sensor support 2, an inductive sensor 4, and a sensing screw 8. A mounting flange 6 at the reducer input end is mounted on the reducer housing and remains stationary. A transparent cover 7 is coaxially connected to the outside of the center hole of the mounting flange 6 via screws.

[0025] Among them, the sensor holder 2 is an L-shaped structure, which is fixed to one side of the outer end surface of the transparent cover 7 at the input end of the reducer by screws, and a threaded hole corresponding to the gear shaft 1 at the input end of the reducer is opened on the sensor holder 2; the inductive sensor 4 is correspondingly threadedly connected to the threaded hole of the sensor holder 2, and the inner end of the inductive sensor 4 is radially corresponding to the gear shaft 1 at the input end of the reducer. The inductive sensor 4 is tightened and prevented from loosening between the sensor holder 2 by two thin nuts 3; the wire of the inductive sensor 4 passes through the side wall of the mounting flange 6 at the input end of the reducer and is connected to the host control system.

[0026] In this embodiment, there are two sensing screws 8, which are respectively threadedly connected to the radial ends of the outer circumferential end surface of the gear shaft 1 at the input end of the reducer and form an angle of 180° with each other, and the positions of the sensing screws 8 correspond to those of the inductive sensor 4.

[0027] A radial threaded hole is formed in the middle of the sidewall of the reducer input mounting flange 6, and a cable gland 5 is mounted on the outside of the threaded hole. The wires of the inductive sensor 4 pass through the threaded hole and cable gland 5 and are locked by the cable gland 5. The cable gland 5 prevents the wires of the inductive sensor 4 from loosening and also prevents dust and moisture from entering the reducer cavity.

[0028] The sensing screws 8 are all modified from ordinary screws, that is, the anti-corrosion coating on the flat end of the screw head is ground off to avoid affecting the sensing effect, and anti-rust oil is re-applied to the flat end of the screw head; in this embodiment, a spring washer 9 is installed between the connection between the sensing screw 8 and the gear shaft 1 at the input end of the reducer to prevent loosening.

[0029] When the inner end of the inductive sensor 4 is radially opposite to the flat end of the screw head of the sensing screw 8 , the sensing distance x between the two is 1-1.5 mm. The sensing distance x can be adjusted by screwing the inductive sensor 4 in or out of the sensor holder 2 .

[0030] The inductive sensor 4 is connected in the control system of the host computer, when the speed reducer operates, the gear shaft 1 rotates, two inductive screws 8 installed on the gear shaft 1 generate an inductive signal every time passing the inductive sensor 4, the rotational speed of the gear shaft 1 of the speed reducer can be obtained by setting and operation in the control system, further the rotational speed of the spiral blade of the spiral machine can be monitored and adjusted according to the requirement, so as to adjust the discharging efficiency of the spiral machine.

[0031] The utility model integrates in the input end of the speed reducer, has no influence to the internal structure of the speed reducer, can directly configure in the structure meter stage of the speed reducer, also can increase when reforming old model, and the compatibility is stronger.

[0032] The utility model is not detailed for the known art.

[0033] The above-mentioned embodiment is only used for describing the preferred embodiment of the utility model, and does not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by the ordinary skill in the art without departing from the design spirit of the utility model should fall into the protection scope determined by the claim of the utility model.

Claims

1. A screw center drive reduction unit rotational speed monitoring system characterized by: The system comprises a sensor support, an inductive sensor and inductive screws; the sensor support is fixedly installed on the outer end surface of the cover of the input end of the speed reducer, and a threaded hole corresponding to the gear shaft of the input end of the speed reducer is formed in the sensor support; the inductive sensor is threadedly connected in the threaded hole of the sensor support and the inner end thereof is radially corresponding to the gear shaft of the input end of the speed reducer; the lead wire of the inductive sensor is led out through the side wall of the mounting flange of the input end of the speed reducer; the inductive screws are respectively arranged at the radial ends of the outer circumferential end surface of the gear shaft of the input end of the speed reducer and correspond to the position of the inductive sensor.

2. A screw center drive reduction unit rotational speed monitoring system according to claim 1, characterized in that: A threaded hole is formed in the middle of the side wall of the mounting flange of the input end of the speed reducer, the lead wire of the inductive sensor is led out through the threaded hole, and a gland is mounted outside the threaded hole, the lead wire of the inductive sensor passes through the gland and is locked.

3. A center drive speed reducer rotational speed monitoring system of a screw machine according to claim 1, characterized in that: The inductive sensor is locked between the thin nut and the sensor support.

4. A screw center drive reduction unit rotational speed monitoring system according to claim 1, characterized in that: The inductive screw is modified from a common screw, that is, the anticorrosion coating on the flat end of the screw head is polished off and a rust-proof layer is repainted.

5. A screw center drive reduction unit rotational speed monitoring system according to claim 4, characterized in that: A spring washer is arranged between the inductive screw and the connection of the gear shaft of the input end of the speed reducer.

6. A screw center drive reduction unit rotational speed monitoring system according to claim 4, characterized in that: When the inner end of the inductive sensor is radially opposite to the flat end of the screw head of the inductive screw, the distance x between them is 1-1.5 mm.

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