Coal mill maintenance jigger

Abstract

The utility model provides a coal mill overhauling jigger, and belongs to the technical field of coal mill overhauling. The coal mill maintenance jigger comprises a base and a jigger assembly. The turning assembly comprises a speed reducer, a turning motor and a transmission sleeve, during use, when the connecting block does not extrude the limiting switch, the limiting switch is in a disconnected state, then a driving motor of the coal mill cannot be turned on, and when the connecting block extrudes the limiting switch, the transmission sleeve and a coal milling rotating shaft of the coal mill are in a separated state; the power supply switch is located on one side of the transmission sleeve, when the power supply switch is closed, an operator can visually see whether the transmission sleeve and a coal grinding rotating shaft of the coal mill are in a separated state or not, and then the situation that the turning motor is not disengaged when the coal mill is started is avoided. The situation that the coal mill drives the turning motor and the speed reducer to rotate is avoided, and therefore the turning motor and the speed reducer are not prone to being damaged.

Description

Technical Field

[0001] This application relates to the field of coal mill maintenance, and more specifically, to a coal mill maintenance turning gear. Background Technology

[0002] A coal mill is a machine that crushes coal blocks and grinds them into coal powder. After the coal mill is stopped, the key components such as the grinding disc and grinding rollers can be slowly rotated by turning the wheel, which makes it easy for maintenance personnel to enter the interior to check the wear and tear and clean the residual coal powder. In addition, the drive motor of the coal mill is a high-power motor, which needs to be connected to the turning motor before starting. After the turning motor is running normally, the turning motor is disconnected before starting the coal mill.

[0003] In actual use, due to operator negligence, the turning gear motor may not be disengaged when the coal mill is started. If the turning gear motor is not disengaged from the coal mill, the coal mill will drive the turning gear motor and reducer to rotate, which can easily cause damage to the turning gear motor and reducer. Utility Model Content

[0004] To overcome the above deficiencies, this application provides a coal mill maintenance turning gear, which aims to improve the problem that the turning gear motor and reducer are easily damaged when the coal mill is started without being disconnected.

[0005] This application provides a coal mill maintenance turning gear, including a base and a turning gear assembly.

[0006] The upper surface of the base is provided with a linear module, and the moving end of the linear module is provided with a connecting block. The connecting block is slidably connected to the upper surface of the base. The upper surface of the base is provided with a limit switch, which is correspondingly provided with the connecting block. One side of the limit switch button is set to an arc shape, and the bottom of the connecting block near the limit switch is set to an arc shape. The upper surface of the base is provided with a power supply switch, which is electrically connected to the limit switch.

[0007] The turning gear assembly includes a reducer, a turning gear motor, and a transmission sleeve. The reducer is fixedly connected to the connecting block. The turning gear motor is connected to one end of the reducer. The rotating shaft of the turning gear motor is fixedly connected to the input shaft of the reducer. The transmission sleeve is fixedly connected to the output shaft of the reducer. The power supply switch is located on one side of the transmission sleeve.

[0008] In one specific implementation, the base includes a base plate, legs, and foot plates, with the top of the legs fixedly connected to the base plate and the foot plates fixedly connected to the bottom of the legs.

[0009] In one specific implementation, four support legs are provided, with the top ends of the four support legs fixedly connected to the four corners of the lower surface of the base plate, and the bottom ends of the four support legs fixedly connected to the foot plate.

[0010] In one specific implementation, a first connecting groove is provided on the upper surface of the base plate, and the linear module is fixedly connected to the inside of the first connecting groove.

[0011] In one specific implementation, a linear guide rail is provided on the upper surface of the base plate, and the lower surface of the connecting block is fixedly connected to the moving end of the linear guide rail.

[0012] In one specific implementation, two linear guides are provided, which are symmetrically arranged on both sides of the linear module, and the lower surface of the connecting block is fixedly connected to the moving ends of the two linear guides.

[0013] In one specific implementation, the upper surface of the base plate is provided with a second connecting groove, and two second connecting grooves are provided. The two second connecting grooves are symmetrically arranged on both sides of the first connecting groove, and the two linear guide rails are respectively fixedly connected to the inside of the two second connecting grooves.

[0014] In one specific implementation, a fixing groove is formed on the upper surface of the base plate, and a through hole is formed at the bottom end of the fixing groove. The limit switch is connected inside the fixing groove, and the through hole is correspondingly set with the limit switch.

[0015] In one specific implementation, the transmission sleeve has a slot inside, and the cross-section of the slot is polygonal.

[0016] In one specific implementation, the coal mill maintenance trolley also includes a coal mill grinding shaft, one end of which has a polygonal cross-section, and the slot is slidably fitted onto one end of the coal mill grinding shaft.

[0017] The beneficial effects of this utility model are as follows: When the connecting block does not press against the limit switch, the limit switch is in the open state, preventing the power supply switch from energizing the power supply switch and thus preventing the power supply switch from energizing the drive motor of the coal mill. Consequently, the drive motor of the coal mill cannot be turned on. When the connecting block presses against the limit switch, the transmission sleeve is separated from the coal mill's grinding shaft, allowing the drive motor of the coal mill to be turned on. Furthermore, since the power supply switch is located on one side of the transmission sleeve, the operator can directly observe whether the transmission sleeve and the coal mill's grinding shaft are separated when the power supply switch is closed. This prevents the situation where the rotating gear motor is not disengaged when the coal mill starts, and prevents the coal mill from driving the rotating gear motor and reducer to rotate, thus reducing the risk of damage to the rotating gear motor and reducer. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a first-view structural diagram of the coal mill maintenance turning gear provided in the embodiments of this application;

[0020] Figure 2 A schematic diagram of the second-view structure of the coal mill maintenance turning gear provided for an embodiment of this application;

[0021] Figure 3 A schematic diagram of the base structure provided for an embodiment of this application;

[0022] Figure 4 A schematic diagram of the cross-sectional structure of the base plate provided for an embodiment of this application.

[0023] In the diagram: 100-base; 101-base plate; 1011-first connecting groove; 1012-second connecting groove; 1013-fixing groove; 1014-through hole; 102-support leg; 103-foot plate; 110-linear module; 120-connecting block; 130-limit switch; 140-power switch; 150-linear guide rail; 200-turning wheel assembly; 210-reducer; 220-turning wheel motor; 230-transmission sleeve; 231-slot; 300-coal mill grinding shaft. Detailed Implementation

[0024] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Please see Figure 1 This application provides a coal mill maintenance turning gear, including a base 100 and a turning gear assembly 200.

[0027] Please see Figure 1-4 The base 100 includes a base plate 101, legs 102 and foot plates 103. The top of the legs 102 is fixedly connected to the base plate 101, and the foot plates 103 are fixedly connected to the bottom of the legs 102. There are four legs 102. The tops of the four legs 102 are fixedly connected to the four corners of the lower surface of the base plate 101, and the bottoms of the four legs 102 are all fixedly connected to the foot plates 103.

[0028] In this embodiment, a linear module 110 is provided on the upper surface of the base 100, and a first connecting groove 1011 is provided on the upper surface of the base plate 101. The linear module 110 is fixedly connected to the inside of the first connecting groove 1011, and a connecting block 120 is provided on the moving end of the linear module 110. The connecting block 120 is slidably connected to the upper surface of the base 100.

[0029] In the specific configuration, the upper surface of the base plate 101 is provided with a linear guide rail 150, the lower surface of the connecting block 120 is fixedly connected to the moving end of the linear guide rail 150, there are two linear guide rails 150, the two linear guide rails 150 are symmetrically arranged on both sides of the linear module 110, the lower surface of the connecting block 120 is fixedly connected to the moving ends of both linear guide rails 150, the upper surface of the base plate 101 is provided with a second connecting groove 1012, there are two second connecting grooves 1012, the two second connecting grooves 1012 are symmetrically arranged on both sides of the first connecting groove 1011, and the two linear guide rails 150 are respectively fixedly connected to the inside of the two second connecting grooves 1012.

[0030] In this application, a limit switch 130 is provided on the upper surface of the base 100. The limit switch 130 is normally open. A fixing groove 1013 is provided on the upper surface of the base plate 101. A wire hole 1014 is provided at the bottom end of the fixing groove 1013. The limit switch 130 is connected to the inside of the fixing groove 1013. The wire hole 1014 is correspondingly provided with the limit switch 130.

[0031] In this embodiment, the limit switch 130 and the connecting block 120 are correspondingly arranged. One side of the button of the limit switch 130 is set to be arc-shaped, and the bottom of the connecting block 120 near the limit switch 130 is set to be arc-shaped. A power supply switch 140 is provided on the upper surface of the base 100. The power supply switch 140 is electrically connected to the limit switch 130 and is powered by the limit switch 130. The drive motor of the coal mill is electrically connected to the power supply switch 140 and is powered by the power supply switch 140.

[0032] Please see Figure 1 and 2 The turning gear assembly 200 includes a reducer 210, a turning gear motor 220, and a transmission sleeve 230. The reducer 210 is fixedly connected to the connecting block 120. The turning gear motor 220 is connected to one end of the reducer 210. The rotating shaft of the turning gear motor 220 is fixedly connected to the input shaft of the reducer 210. The transmission sleeve 230 is fixedly connected to the output shaft of the reducer 210. A slot 231 is provided inside the transmission sleeve 230. The cross-section of the slot 231 is polygonal. The cross-section of the slot 231 can be rectangular. The power supply switch 140 is located on one side of the transmission sleeve 230.

[0033] Please see Figure 1 and 2 The coal mill maintenance trolley also includes a coal mill grinding shaft 300. The cross-section of one end of the coal mill grinding shaft 300 is set as a polygon, and the cross-section of one end of the coal mill grinding shaft 300 can be rectangular. The slot 231 is slidably sleeved on one end of the coal mill grinding shaft 300.

[0034] Specifically, the working principle of the coal mill maintenance turning gear is as follows: During use, the linear module 110 can drive the connecting block 120 to move towards the coal mill's grinding shaft 300, thereby allowing the transmission sleeve 230 to slide onto one end of the coal mill's grinding shaft 300. This enables the turning gear motor 220 to be activated. The turning gear motor 220, through the reducer 210 and limit switch 130, drives the coal mill's grinding shaft 300 to rotate, thus performing turning. When it is necessary to start the coal mill, the linear module 110 is activated. The linear module 110 moves the connecting block 120 toward the limit switch 130, which in turn moves the reducer 210, the turning gear motor 220, and the transmission sleeve 230, allowing the transmission sleeve 230 to disengage from the coal mill's grinding shaft 300. The linear module 110 then moves the connecting block 120 toward the limit switch 130, causing the connecting block 120 to press against the limit switch 130. The connecting block 120 presses against the button of the limit switch 130, thereby closing the limit switch 130 and allowing power to be supplied to the limit switch 130. When switch 140 is powered, it can be closed to supply power to the drive motor of the coal mill. When connecting block 120 does not press limit switch 130, limit switch 130 is in the open state, and limit switch 130 will not energize power switch 140, thus preventing power supply to the drive motor of the coal mill and preventing the drive motor of the coal mill from starting. When connecting block 120 presses limit switch 130, transmission sleeve 230 is separated from coal mill grinding shaft 300. When the power supply switch 140 is closed, the operator can directly see whether the transmission sleeve 230 and the coal mill grinding shaft 300 are separated. This prevents the situation where the turning motor 220 is not disengaged when the coal mill starts, and prevents the coal mill from driving the turning motor 220 and the reducer 210 to rotate, thus reducing the risk of damage to the turning motor 220 and the reducer 210.

[0035] It should be noted that the specific models and specifications of the linear module 110, limit switch 130, power supply switch 140, linear guide rail 150, reducer 210 and turning motor 220 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0036] The power supply and operating principle of the linear module 110, limit switch 130, power supply switch 140 and turning motor 220 are clear to those skilled in the art and will not be described in detail here.

[0037] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A coal mill maintenance turning gear, characterized in that, include A base (100) is provided with a linear module (110) on its upper surface. A connecting block (120) is provided at the moving end of the linear module (110). The connecting block (120) is slidably connected to the upper surface of the base (100). A limit switch (130) is provided on the upper surface of the base (100). The limit switch (130) is correspondingly provided to the connecting block (120). One side of the button of the limit switch (130) is arc-shaped. The bottom of the connecting block (120) near the limit switch (130) is arc-shaped. A power supply switch (140) is provided on the upper surface of the base (100). The power supply switch (140) is electrically connected to the limit switch (130). A turning gear assembly (200) includes a reducer (210), a turning gear motor (220), and a transmission sleeve (230). The reducer (210) is fixedly connected to the connecting block (120). The turning gear motor (220) is connected to one end of the reducer (210). The rotating shaft of the turning gear motor (220) is fixedly connected to the input shaft of the reducer (210). The transmission sleeve (230) is fixedly connected to the output shaft of the reducer (210). The power supply switch (140) is located on one side of the transmission sleeve (230).

2. A coal mill maintenance turning gear according to claim 1, characterized in that, The base (100) includes a base plate (101), a support leg (102) and a foot plate (103). The top end of the support leg (102) is fixedly connected to the base plate (101), and the foot plate (103) is fixedly connected to the bottom end of the support leg (102).

3. A coal mill maintenance turning gear according to claim 2, characterized in that, The four support legs (102) are provided. The top ends of the four support legs (102) are respectively fixedly connected to the four corners of the lower surface of the base plate (101), and the bottom ends of the four support legs (102) are fixedly connected to the foot plate (103).

4. A coal mill maintenance turning gear according to claim 2, characterized in that, The upper surface of the base plate (101) is provided with a first connecting groove (1011), and the linear module (110) is fixedly connected to the inside of the first connecting groove (1011).

5. A coal mill maintenance turning gear according to claim 4, characterized in that, The upper surface of the base plate (101) is provided with a linear guide rail (150), and the lower surface of the connecting block (120) is fixedly connected to the moving end of the linear guide rail (150).

6. A coal mill maintenance turning gear according to claim 5, characterized in that, Two linear guides (150) are provided, and the two linear guides (150) are symmetrically arranged on both sides of the linear module (110). The lower surface of the connecting block (120) is fixedly connected to the moving ends of the two linear guides (150).

7. A coal mill maintenance turning gear according to claim 6, characterized in that, The upper surface of the base plate (101) is provided with a second connecting groove (1012), and there are two second connecting grooves (1012). The two second connecting grooves (1012) are symmetrically arranged on both sides of the first connecting groove (1011), and the two linear guides (150) are respectively fixedly connected to the inside of the two second connecting grooves (1012).

8. A coal mill maintenance turning gear according to claim 2, characterized in that, The upper surface of the base plate (101) is provided with a fixing groove (1013), and the bottom end of the fixing groove (1013) is provided with a through hole (1014). The limit switch (130) is connected to the inside of the fixing groove (1013), and the through hole (1014) is correspondingly provided with the limit switch (130).

9. A coal mill maintenance turning gear according to claim 1, characterized in that, The transmission sleeve (230) has a slot (231) inside, and the cross-section of the slot (231) is polygonal.

10. A coal mill maintenance turning gear according to claim 9, characterized in that, It also includes a coal mill grinding shaft (300), one end of which has a polygonal cross-section, and the slot (231) is slidably fitted onto one end of the coal mill grinding shaft (300).

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