Fixed cutter looseness detection device

Abstract

The utility model provides a stationary knife looseness detection device which is characterized in that a crusher comprises a shell, wing plates are arranged on two sides of the bottom of the shell, a monitoring device is arranged on an outer shell of the shell, stationary knife holders are arranged on the wing plates on the two sides, a rotating knife roller group is arranged in the crusher, and the rotating knife roller group is connected with the monitoring device. A cutting surface is arranged on the peripheral side of the rotating knife roller group and is matched with the surface of the fixed knife holder; the monitoring device comprises a test piece, first test plates are arranged at the two ends of the fixed cutter holder, and the measuring ends of the test piece are located on the side faces of the first test plates. According to the utility model, one side of the fixed cutter holder is provided with the sensing piece, the proximity switch is installed on a relatively static part of the crusher shell, and the state of the sensor is judged through the controller; protection of the cutting roller is automatically started, and an operator is reminded to detect whether the fixed tool apron is loosened or not.

Description

Technical Field

[0001] The utility model relates to the technical field of crusher equipment, in particular to a fixed knife loosening detection device. Background Art

[0002] Before leaving the factory, the grinder generally needs to adjust the blade gap to within the millimeter level. The disadvantage is that once the blade is loose and not discovered in time, it is likely to cause a blade-to-blade accident. In the worst case, the blade will break, and in the worst case, the crushing shell will be directly damaged, causing the equipment to be scrapped. Therefore, the operator needs to frequently inspect and repair the tool, resulting in a large amount of cost losses. Moreover, after repair, it is impossible to accurately determine whether the blade is in the original safe position of the machine, and it is easy to cause a safety accident in the second test due to the accuracy of the debugging part.

[0003] To achieve the above objectives, the present invention provides a device for detecting looseness of a fixed knife, which can solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model adopts the following technical solutions to achieve:

[0005] A device for detecting loose fixed blades includes a pulverizer, the pulverizer including a housing, wing plates provided on both sides of the bottom of the housing, a monitoring device provided on the outer shell of the housing, fixed blade seats provided on both sides of the wing plates, a rotating blade roller group provided inside the pulverizer, and a cutting surface provided on the circumference of the rotating blade roller group to cooperate with the surface of the fixed blade seat;

[0006] The monitoring device includes a test piece. Test plates 1 are provided at both ends of the fixed knife seat. The measuring end of the test piece is located on the side of the test plate 1.

[0007] Preferably, the fixed knife seat includes a fixed knife plate and a fixed knife blade, the fixed knife blade is fixed on the fixed knife plate, side positioning plates are provided on both sides of the fixed knife plate, movable grooves are provided on both sides of the shell, the side positioning plates pass through the movable grooves, and a test plate is provided on one side of the side positioning plate, and the bottom of the side positioning plate is in contact with the wing plate.

[0008] Preferably, the monitoring device includes a second test board, which is parallel to the first test board. The test piece is fixed on the second test board, and the test end of the test piece is located on the side of the first test board near the lowest edge.

[0009] Preferably, a waist-shaped hole is provided on the second test plate, the test piece is fixed inside the waist-shaped hole, the surface of the first test plate parallel to the second test plate is an irregular edge surface, and the test piece can be any type of distance test piece or sound and light test piece.

[0010] Preferably, the monitoring device also includes a pressure plate group and a locking bolt group. The wing plate is provided with an interval fixing block, the interval fixing block is parallel to the test plate one, and one end of the test plate two is fixed to one side of the interval fixing block. The lower surface of the pressure plate group and the top surface of the part of the side positioning plate extending out of the movable groove abut each other, and the locking bolt groups are respectively located on both sides of the side positioning plate along the wing plate. The locking bolt group and the side positioning plate are threadedly connected, and the locking bolt group and the interval fixing block are frictionally fixed.

[0011] Preferably, the pressure plate group includes a pressure plate and a long locking bolt. The bottom surface of the pressure plate contacts the upper surface of the side positioning plate. One end of the long locking bolt passes through the wing plate and the pressure plate in sequence and extends out of the upper surface of the pressure plate to be connected with a compound locking nut. A spring is provided between the compound locking nut and the upper surface of the pressure plate.

[0012] Preferably, the locking bolt group includes a positioning bolt column, which is arranged to pass through the interval fixing block and the side positioning plate, the axis of the positioning bolt column is parallel to the wing plate, the outer circumference of the positioning bolt column is threaded, and the positioning bolt column is located on both sides of the interval fixing block. The threads are connected with positioning locking nuts, and the positioning locking nuts are used to lock the horizontal displacement end of the positioning bolt column.

[0013] Preferably, the pressure plate group also includes a mating bolt, which is fixed above the pressure plate. A mating groove is provided above the side positioning plate. The mating groove is an elliptical groove, and one end of the mating bolt passes through the pressure plate and extends into the mating groove.

[0014] Preferably, the rotating blade roller includes a crushing motor, the output end of the crushing motor extends downward into the shell and is connected to a stirring roller, a rotating blade plate is provided on the circumference of the stirring roller, and the rotating blade plate is in contact with the fixed blade seat. There are at least two rotating blade plates distributed on the circumference of a single stirring roller, and the rotation coverage stroke space of the two rotating blade plates is larger than the volume of the stirring roller.

[0015] Preferably, a protective cover is provided on the outside of the monitoring device.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model equips one side of the fixed blade seat with a sensor sheet, installs a proximity switch on a relatively stationary component of the crusher housing, and judges the sensor status through a controller, automatically starts the protection of the cutting roller and reminds the operator to detect whether the fixed blade seat is loose. Through the real-time measurement distance change and photoelectric signal change of the monitoring device, it is judged whether the side of the fixed blade seat has horizontal, vertical and rotational displacement, and the loose state is judged by the numerical change to remind the operator to make adjustments. The operator does not need to frequently manually check whether the fixed blade seat is loose; and the occurrence of the fixed blade seat and the rotating cutter roller being cut due to the loosening of the fixed blade seat is greatly reduced, which can better protect the safety of the crushing blade of the crusher and save maintenance expenses and material costs.

[0018] In addition, the present application controls the upper and lower parts of the fixed blade seat by a pressure plate group, the left and right parts by a locking bolt group, and the rotating side by a wing plate and a mating bolt, and the connection points therebetween are all structures with elastic recovery capabilities, which can maintain the adaptability of the side positioning plate when the fixed blade is subjected to an instantaneous large impulse impact, and reduce the occurrence of blade breakage caused by the frontal impact between the side positioning plate and the object due to the rigid connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the bottom surface of the crusher of the present invention;

[0020] Figure 2 This is a side view of the structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the isometric structural position of the utility model;

[0022] Figure 4 For the utility model Figure 2 A magnified view of the structure at point A;

[0023] Figure 5 This is a top view of the fixed blade structure of the utility model;

[0024] Figure 6 It is a side view of the fixed blade plate structure of the present utility model.

[0025] In the figure: 1. Fixed blade holder; 2. Rotating blade roller; 3. Monitoring device; 4. Protective cover; 5. Housing;

[0026] 101. Fixed blade plate; 102. Fixed blade; 103. Side positioning plate; 104. Test plate 1; 105. Matching groove;

[0027] 201, crushing motor; 202, stirring roller; 203, rotating blade;

[0028] 301, interval fixing block; 302, pressure plate assembly; 303, locking bolt assembly; 304, pressure plate; 305, long locking bolt; 306, compound locking nut; 307, positioning bolt column; 308, positioning locking nut; 309, test plate 2; 310, waist-shaped hole; 311, test piece; 312, matching bolt;

[0029] 501, wing plate; 502, movable groove. DETAILED DESCRIPTION

[0030] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0033] The present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Example 1:

[0035] Please refer to the attached Figure 1-6 The pulverizer includes a shell 5, wing plates 501 are provided on both sides of the bottom of the shell 5, a monitoring device 3 is provided on the outer shell of the shell 5, and a fixed blade seat 1 is provided on both sides of the wing plates 501. The interior of the pulverizer is provided with 2 groups of rotary cutter rollers, and the peripheral sides of the rotary cutter rollers 2 are provided with cutting surfaces that cooperate with the surface of the fixed blade seat 1;

[0036] The monitoring device 3 includes a test piece 311. Test plates 104 are provided at both ends of the fixed blade holder 1. The measuring end of the test piece 311 is located on the side of the test plate 104. A protective cover 4 is provided on the outside of the monitoring device 3.

[0037] The monitoring device 3 includes a second test board 309 , which is parallel to the first test board 104 . The test piece 311 is fixed on the second test board 309 , and the test end of the test piece 311 is located on the side of the first test board 104 near the lowest edge.

[0038] The second test plate 309 is provided with a waist-shaped hole 310, and the test piece 311 is fixed inside the waist-shaped hole 310. The surface of the first test plate 104 parallel to the second test plate 309 is an irregular edge surface. The test piece 311 can be any type of distance test piece 311 or sound and light test piece 311;

[0039] The waist-shaped hole 310 can be a vertical waist-shaped hole 310 or a horizontal waist-shaped hole 310, and its purpose is to install the test piece 311. The test piece 311 includes a test end and a proximity switch. The test end can use distance sampling or photoelectric sampling, that is, laser radiation. The sampling end radiation of the photoelectric sampling is located at the edge of the test board 104. The shape of the test board 104 can be any shape, such as Figure 4 The test board 104 shown only needs to have one point for the test piece 311 to test. Setting it at the bottom edge can help to sensitively monitor the rotation of the test board 104 after the pressure plate group 302 is loosened. When the pressure plate group 302 is loosened upward, the test board 104 will also bend upward. The value at one end of the test piece 311 changes randomly and the proximity switch alarm is triggered immediately. The maintenance personnel can continue to use it after repair and replacement. The use of distance test monitoring can cooperate with the bottom monitoring point to still measure whether the test board 104 and the fixed knife seat 1 have horizontal displacement.

[0040] Example 2:

[0041] Please refer to Figure 1-6, the monitoring device 3 also includes a pressure plate group 302 and a locking bolt group 303. The wing plate 501 is provided with an interval fixing block 301, and the interval fixing block 301 is parallel to the test plate 104. One end of the test plate 2 309 is fixed to one side of the interval fixing block 301. The lower surface of the pressure plate group 302 and the top surface of the part of the side positioning plate 103 extending out of the movable groove 502 abut against each other. The locking bolt group 303 is respectively located on both sides of the side positioning plate 103 along the wing plate 501. The locking bolt group 303 and the side positioning The plates 103 are threadedly connected, and the locking bolt group 303 and the interval fixing block 301 are frictionally fixed. The pressure plate group 302 is fixed by the long locking bolt 305 and the compound locking nut 306 so that the pressure plate 304 is always in close contact with the side positioning plate 103, which can ensure the up and down mobility of the fixed knife seat 1 during daily use, and ensure a certain longitudinal toughness during rigid collision. The setting of the locking bolt group 303 is convenient for initial adjustment while being able to adapt to and fix the horizontal lateral displacement of the side positioning plate 103, thereby ensuring the needs of the fixed knife seat 1 in normal use.

[0042] Please pay attention to Figure 2 、 Figure 3 The pressure plate group 302 includes a pressure plate 304 and a long locking bolt 305. The bottom surface of the pressure plate 304 contacts the upper surface of the side positioning plate 103. One end of the long locking bolt 305 passes through the wing plate 501 and the pressure plate 304 in sequence and extends out of the upper surface of the pressure plate 304 to be connected to a compound locking nut 306. A spring is provided between the compound locking nut 306 and the upper surface of the pressure plate 304.

[0043] The pressure plate group 302 also includes a mating bolt 312, and the mating bolt 312 is fixed above the pressure plate 304. A mating groove 105 is provided above the side positioning plate 103, and the mating groove 105 is an elliptical groove. One end of the mating bolt 312 passes through the pressure plate 304 and extends into the mating groove 105. The pressure plate group 302 and the mating bolt 312 are both threaded and fixed, which may produce a certain looseness during multiple impacts and vibrations, leaving the side positioning plate 103 with possible rotation space. In the case of a rigid and severe blade collision impact, it can play a certain compressive resistance role. At the same time, after loosening occurs, the side positioning plate 103 can be given rotation control to facilitate its detection and alarm, and can perform simple mechanical reset, which is convenient and fast.

[0044] Please pay attention to Figure 3The locking bolt group 303 includes a positioning bolt column 307, which is arranged to pass through the interval fixing block 301 and the side positioning plate 103. The axis of the positioning bolt column 307 is parallel to the wing plate 501. The outer circumference of the positioning bolt column 307 is threaded. The positioning bolt column 307 is located on both sides of the interval fixing block 301 and is connected with a positioning locking nut 308. The positioning locking nut 308 is used to lock the horizontal displacement end of the positioning bolt column 307.

[0045] Please pay attention to Figure 1 、 Figure 2 The rotating blade roller 2 includes a crushing motor 201, the output end of the crushing motor 201 extends downward into the shell 5 and is connected to the stirring roller 202, and a rotating blade plate 203 is provided on the circumference of the stirring roller 202, and the rotating blade plate 203 is in contact with the fixed blade seat 1. There are at least two rotating blade plates 203 distributed on the circumference of a single stirring roller 202, and the rotation coverage stroke space of the two rotating blade plates 203 is greater than the volume of the stirring roller 202.

[0046] In addition, the monitoring device 3 can be set on the side positioning plates 103 on both sides of the fixed knife seat 1, or can be set on the side positioning plate 103 on one side. When there is only one set of monitoring devices 3 on both sides, the other side also has fixing elements such as the locking bolt group 303 and the pressure plate group 302, but does not have auxiliary testing elements such as the test piece 311 and the test plate 104.

[0047] The above description of the present invention is illustrative in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A fixed blade loosening detection device, comprising a crusher, characterized in that: The pulverizer comprises a housing (5), wing plates (501) are provided on both sides of the bottom of the housing (5), a monitoring device (3) is provided on the outer shell of the housing (5), fixed blade seats (1) are provided on the wing plates (501) on both sides, a rotating blade roller (2) group is provided inside the pulverizer, and a cutting surface is provided on the circumference of the rotating blade roller (2) group to match the surface of the fixed blade seat (1); The monitoring device (3) includes a test piece (311), and a test plate (104) is provided at both ends of the fixed knife seat (1), and a measuring end of the test piece (311) is located on the side of the test plate (104).

2. The fixed knife loosening detection device according to claim 1, characterized in that: The fixed blade seat (1) includes a fixed blade plate (101) and a fixed blade (102), wherein the fixed blade (102) is fixed on the fixed blade plate (101), and side positioning plates (103) are provided on both sides of the fixed blade plate (101), and movable grooves (502) are provided on both sides of the shell (5), and the side positioning plates (103) pass through the movable grooves (502), wherein a test plate (104) is provided on one side of the side positioning plate (103), and the bottom of the side positioning plate (103) contacts the wing plate (501).

3. The fixed knife loosening detection device according to claim 1, characterized in that: The monitoring device (3) includes a second test board (309), the second test board (309) is parallel to the first test board (104), the test piece (311) is fixed on the second test board (309), and the test end of the test piece (311) is located on the side of the first test board (104) near the lowest edge.

4. The device for detecting looseness of a fixed blade according to claim 3, characterized in that: The second test plate (309) is provided with a waist-shaped hole (310), and the test piece (311) is fixed inside the waist-shaped hole (310). The surface of the first test plate (104) parallel to the second test plate (309) is an irregular edge surface. The test piece (311) can be any of a distance test piece (311) and an acousto-optic test piece (311).

5. The device for detecting looseness of a fixed blade according to claim 2, characterized in that: The monitoring device (3) also includes a pressure plate group (302) and a locking bolt group (303). An interval fixing block (301) is provided on the wing plate (501). The interval fixing block (301) is parallel to the test plate one (104). One end of the test plate two (309) is fixed to one side of the interval fixing block (301). The lower surface of the pressure plate group (302) and the top surface of the part of the side positioning plate (103) extending out of the movable groove (502) are in contact with each other. The locking bolt group (303) is respectively located on both sides of the side positioning plate (103) along the wing plate (501). The locking bolt group (303) is threadedly connected to the side positioning plate (103). The locking bolt group (303) and the interval fixing block (301) are frictionally fixed.

6. The device for detecting looseness of a fixed blade according to claim 5, characterized in that: The pressure plate group (302) includes a pressure plate (304) and a long locking bolt (305). The bottom surface of the pressure plate (304) contacts the upper surface of the side positioning plate (103). One end of the long locking bolt (305) passes through the wing plate (501) and the pressure plate (304) in sequence and extends out of the upper surface of the pressure plate (304) to be connected with a compound locking nut (306). A spring is provided between the compound locking nut (306) and the upper surface of the pressure plate (304).

7. The fixed knife loosening detection device according to claim 5, characterized in that: The locking bolt group (303) includes a positioning bolt column (307), which is arranged to penetrate the interval fixing block (301) and the inside of the side positioning plate (103), and the axis of the positioning bolt column (307) is parallel to the wing plate (501). The outer peripheral side of the positioning bolt column (307) is threaded, and the positioning bolt column (307) is located on the threads of the two side parts of the interval fixing block (301) and is connected with positioning locking nuts (308). The positioning locking nuts (308) are used to lock the horizontal displacement end of the positioning bolt column (307).

8. The device for detecting looseness of a fixed blade according to claim 6, characterized in that: The pressure plate group (302) also includes a matching bolt (312), which is fixed above the pressure plate (304). A matching groove (105) is provided above the side positioning plate (103), and the matching groove (105) is an elliptical groove. One end of the matching bolt (312) passes through the pressure plate (304) and extends into the matching groove (105).

9. The device for detecting looseness of a fixed blade according to claim 1, characterized in that: The rotary blade roller (2) comprises a crushing motor (201), the output end of the crushing motor (201) extends downward into the housing (5) and is connected to a stirring roller (202), a rotary blade plate (203) is provided on the circumference of the stirring roller (202), the rotary blade plate (203) is in contact with the fixed blade seat (1), at least two rotary blade plates (203) are distributed on the circumference of a single stirring roller (202), and the rotation coverage space of the two rotary blade plates (203) is greater than the volume of the stirring roller (202).

10. The device for detecting looseness of a fixed blade according to claim 1, characterized in that: A protective cover (4) is provided on the outside of the monitoring device (3).

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