Speed measuring device for crusher

Abstract

The utility model provides a speed measuring device for a crusher. The speed measuring device comprises an induction magnet and a sensor, the induction magnet is installed at the end of the gear shaft and synchronously rotates along with the gear shaft, and the gear shaft is arranged in the gear box. The sensor is installed on the gear box through an eccentric shell, the eccentric shell is detachably connected with the gear box, and the relative position of the sensor relative to the induction magnet is adjusted through the eccentric shell. According to the speed measuring device for the crusher, an eccentric structure is adopted, the speed measuring device can be installed on a synchronous gear protective cover, and the problem that a traditional structure cannot be used is solved. The novel structure main body adopts a structure formed by welding an eccentric disc and a seamless steel pipe, a transverse plate is arranged on an inner hole of the eccentric disc for mounting a sensor, and a nut is welded at the other end of the seamless steel pipe for fixing a cover plate.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical structures, and particularly relates to a speed measuring device for a crusher. Background Technique

[0002] A double-toothed roll crusher generally consists of a drive system, a crushing system, a lubrication system, and a support system. During operation, it is very likely that hard objects such as ironware will enter, causing the crusher to stall and damaging the drive system of the crusher. Therefore, when manufacturing a crusher, stall protection and temperature protection are usually added.

[0003] Among them, stall protection is to add a speed sensor to the roller component to detect the rotational speed of the roller component. When hard objects such as ironware enter the crushing chamber and cause the roller component to stop rotating, an electrical signal is transmitted to the central control system, and the central control system shuts down in time to avoid losses. Content of the Utility Model

[0004] In view of this, the purpose of the present utility model is to propose a speed measuring device for a crusher to solve at least one problem in the background technique.

[0005] To achieve the above purpose, the technical solution of the present utility model is realized as follows:

[0006] A speed measuring device for a crusher includes an induction magnet and a sensor;

[0007] The induction magnet is installed at the end of the gear shaft and rotates synchronously with the gear shaft, and the gear shaft is arranged in the gearbox;

[0008] The sensor is installed on the gearbox by using an eccentric housing. The eccentric housing is detachably connected to the gearbox, and the relative position of the sensor relative to the induction magnet is adjusted by using the eccentric housing.

[0009] Further, it is fixed to the end of the gear shaft through a first fixing bolt, and the induction magnet is installed on the head of the first fixing bolt.

[0010] Further, the eccentric housing includes an eccentric disc and a seamless steel pipe, and the eccentric disc is fixedly connected to the seamless steel pipe;

[0011] A reserved round hole corresponding to the pipe orifice of the seamless steel pipe is opened on the eccentric disc.

[0012] Further, the opening at the first end of the seamless steel pipe is arranged opposite to the reserved round hole of the eccentric disc, and a cover plate is arranged at the opening at the second end of the seamless steel pipe;

[0013] A welding nut is arranged at the inner wall edge part of the opening at the second end of the seamless steel pipe, and the cover plate is fixed to the opening at the second end of the seamless steel pipe through a second fixing bolt.

[0014] Further, a plurality of connection holes are formed in the eccentric disc, and the plurality of connection holes are arranged in a ring shape. The center of the pitch circle formed by the plurality of connection holes is X mm away from the center of the seamless steel pipe.

[0015] Further, the center of the pitch circle formed by the plurality of connection holes is 20 mm away from the center of the seamless steel pipe.

[0016] Further, a connecting plate is provided at the reserved circular hole part of the eccentric disc, and mounting holes for installing sensors are provided on the connecting plate;

[0017] A second nut is provided at the mounting hole part of the connecting plate, and the sensor is fixed in the mounting hole through the second nut.

[0018] Further, the seamless steel pipe is provided with a wire passing hole, and the connecting wire of the sensor is led out through the wire passing hole.

[0019] Further, an opening is provided on the head of the first fixing bolt, and the induction magnet is embedded in the opening.

[0020] Further, the eccentric housing and the gearbox are detachably connected by bolts and first nuts.

[0021] Compared with the prior art, the speed measuring device for a crusher described in the present invention has the following advantages:

[0022] The speed measuring device for a crusher described in the present invention adopts an eccentric structure and can be installed on the synchronous gear protection cover, solving the situation where the traditional structure cannot be used. The new structure body adopts a structure of welding an eccentric disc and a seamless steel pipe. A cross plate is arranged on the inner hole of the eccentric disc for installing sensors, and a nut is welded at the other end of the seamless steel pipe for fixing the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0025] Figure 2 is a schematic diagram of the first partial structure according to an embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the overall structure in the first three-dimensional angle according to an embodiment of the present invention;

[0027] Figure 4 is a schematic diagram of the overall structure in the second three-dimensional angle according to an embodiment of the present invention;

[0028] Figure 5 Partial schematic diagram of the installation position of the eccentric housing and the gearbox according to the embodiment of the present utility model;

[0029] Figure 6 First-angle schematic diagram of the structure of the eccentric housing according to the embodiment of the present utility model;

[0030] Figure 7 Second-angle schematic diagram of the structure of the eccentric housing according to the embodiment of the present utility model;

[0031] Figure 8 Partial enlarged schematic diagram of the eccentric housing according to the embodiment of the present utility model.

[0032] Explanation of reference numerals:

[0033] 1 - Cover plate; 2 - Eccentric housing; 21 - Eccentric disc; 22 - Seamless steel pipe; 23 - Connecting plate; 24 - Threading hole; 3 - First nut; 4 - Gearbox; 5 - Inductive magnet; 6 - Gear end cover; 7 - First fixing bolt; 8 - Gear shaft end; 9 - Second nut; 10 - Sensor; 11 - Welding nut; 12 - Second fixing bolt. Detailed implementation manners

[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0036] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0038] Aiming at the above existing problems, the main object of the present utility model is to provide a novel proximity switch device applicable to a structure with a synchronous gear installed at the tail end. The technical solution it adopts is: a novel proximity switch device, comprising: a cover plate 1, an eccentric housing 2, a first nut 3, a gearbox 4, an induction magnet 5, a gear end cover 6, a first fixing bolt 7, a gear shaft end 8, a second nut 9, a sensor 10, a welding nut 11, and a second fixing bolt 12.

[0039] The cover plate 1 is connected to the eccentric housing 2 through four second fixing bolts 12 and welding nuts 11. The eccentric housing 2 is connected to the gearbox 4 through a first nut 3. The sensor 10 is fixed to the eccentric housing 2 through a second nut 9. The induction magnet 5 is installed on the head of the first fixing bolt 7. The gear end cover 6 is fixed to the gear shaft end 8 through the first fixing bolt 7. By adjusting the relative positions of the connection holes of the eccentric housing 2 and the gearbox 4, the position requirement of the sensor 10 during the adjustment of the crusher particle size can be ensured.

[0040] On the eccentric disc 21 on the end face of the eccentric housing 2, 24 connection holes are provided, and the distance between the center of the pitch circle and the center of the vertical seamless steel pipe 22 is 20 mm. A connecting plate 23 is arranged in the middle of the eccentric disc 21, and holes are opened on the connecting plate 23 for installing the sensor 10. A wire passing hole 24 is opened on the vertical seamless steel pipe 22. The specific adjustment method is as follows: Since the distance between the center of the pitch circle and the center of the vertical seamless steel pipe 22 is 20 mm, when the crusher particle size is adjusted, due to the change in the position of the gear shaft, the position of the induction magnet 5 also moves synchronously. At this time, the position of the sensor 10 needs to be adjusted. Since the sensor 10 is installed on the eccentric housing 2, the installation position of the eccentric housing 2 relative to the gearbox 4 needs to be adjusted, and then the sensor 10 is realigned with the induction magnet 5 at the gear shaft end 8. The adjustment method is: loosen the first nut 3, then remove the eccentric housing 2, rotate and adjust the angle, and then fix it to the gearbox 4 through bolts and the first nut 3;

[0041] The induction magnet 5 is installed on the first fixing bolt 7, and a hole is drilled on the head of the first fixing bolt 7.

[0042] At the end 8 of the gear shaft, two connecting holes are provided.

[0043] At the gear end cover 6, two connecting holes are provided.

[0044] At the bottoms of the first nut 3, the first fixing bolt 7, and the second fixing bolt 12, flat washers and spring washers are provided.

[0045] Specific implementation process:

[0046] The cover plate 1 and the eccentric housing 2 are connected by 4 second fixing bolts 12 and welding nuts 11. The eccentric housing 2 and the gearbox 4 are connected by the first nut 3. The sensor 10 is fixed on the eccentric housing 2 by the second nut 9. The induction magnet 5 is installed on the head of the first fixing bolt 7. The gear end cover 6 is fixed on the end 8 of the gear shaft by the first fixing bolt 7. By adjusting the relative positions of the connecting holes of the eccentric housing 2 and the gearbox 4, the position requirements of the sensor 10 during the particle size adjustment of the crusher are ensured.

[0047] Adjust the position of the sensor 10. Loosen the second nut 9 on the sensor 10 and move it forward and backward so that the distance between the sensor 10 and the induction magnet 5 reaches the expected position, and then tighten the second nut 9 for locking.

[0048] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A speed measuring device for a crusher, characterized in that, It includes an induction magnet (5) and a sensor (10); The induction magnet (5) is installed at the end (8) of the gear shaft and rotates synchronously with the gear shaft, and the gear shaft is arranged in the gearbox (4); The sensor (10) is installed on the gearbox (4) by using an eccentric housing (2). The eccentric housing (2) is detachably connected to the gearbox (4), and the relative position of the sensor (10) with respect to the induction magnet (5) is adjusted by using the eccentric housing (2).

2. The speed measuring device for a crusher according to claim 1, wherein: It is fixed on the end (8) of the gear shaft by a first fixing bolt (7), and the induction magnet (5) is installed on the head of the first fixing bolt (7).

3. The speed measuring device for a crusher according to claim 1, characterized in that: The eccentric housing (2) includes an eccentric disc (21) and a seamless steel pipe (22), and the eccentric disc (21) is fixedly connected to the seamless steel pipe (22); The eccentric disc (21) is provided with a reserved round hole corresponding to the pipe orifice of the seamless steel pipe (22).

4. The speed measuring device for a crusher according to claim 3, characterized in that: The opening at the first end of the seamless steel pipe (22) is arranged opposite to the reserved round hole of the eccentric disc (21), and a cover plate (1) is arranged at the opening at the second end of the seamless steel pipe (22); At the inner wall edge part of the opening at the second end of the seamless steel pipe (22), a welding nut (11) is arranged, and the cover plate (1) is fixed at the opening at the second end of the seamless steel pipe (22) by a second fixing bolt (12).

5. A speed measuring device for a crusher according to claim 3, characterized in that: The eccentric disc (21) is provided with a plurality of connecting holes, and the plurality of connecting holes are arranged in a ring shape.

6. The speed measuring device for a crusher according to claim 3, wherein: The distance between the center of the pitch circle formed by the plurality of connecting holes and the center of the seamless steel pipe (22) is 20 mm.

7. A speed measuring device for a crusher according to claim 3, characterized in that: A connecting plate (23) is arranged at the reserved round hole part of the eccentric disc (21), and the connecting plate (23) is provided with mounting holes for installing the sensor (10); A second nut (9) is arranged at the mounting hole part of the connecting plate (23), and the sensor (10) is fixed in the mounting hole by the second nut (9).

8. A speed measuring device for a crusher according to claim 3, characterized in that: The seamless steel pipe (22) is provided with a wire passing hole (24), and the connecting wire of the sensor (10) is led out through the wire passing hole (24).

9. The speed measuring device for a crusher according to claim 2, characterized in that: The head of the first fixing bolt (7) is provided with an opening, and the induction magnet (5) is embedded into the opening.

10. The speed measuring device for a crusher according to claim 1, wherein: The eccentric housing (2) and the gearbox (4) are detachably connected by bolts and a first nut (3).

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