A device for detecting wear of carbon brushes of a corner grinder

Abstract

The utility model relates to carbon brush wear detection technical field, concretely is a kind of carbon brush wear detection device of angular direction polishing machine, including base, the top of base is fixed with two support columns, multiple the support column between all are placed with conveying mechanism, the conveying mechanism includes two respectively with corresponding position support column rotation connection's pulley one, transmission connection has conveying belt between two pulley one, the side of conveying mechanism is provided with push mechanism. In the utility model, carbon brush is conveyed to the position of corresponding friction disc by conveying belt, friction disc rotation can carry out friction test to carbon brush, after friction experiment, conveying belt can convey carbon brush to the length of indirect measurement carbon brush between two laser range finders of relative position, if there is greater difference in the length of carbon brush before and after test, it indicates that carbon brush wears seriously, carbon brush friction test is simultaneously provided in the whole carbon brush wear detection process, and it is favorable to improve the efficiency of carbon brush wear detection.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush wear detection technology, specifically a carbon brush wear detection device for an angle grinder. Background Technology

[0002] Carbon brushes play a vital role in transmitting current in angle grinder motors. During motor operation, carbon brushes continuously slide on the commutation poles. This continuous sliding friction leads to wear on the carbon brushes. To ensure that the carbon brushes leaving the factory have sufficient wear resistance and to understand whether the material ratio and processing precision in the carbon brush production process affect the wear resistance of the carbon brushes, it is necessary to sample and test the wear degree of the carbon brushes after the wear resistance test.

[0003] Currently, carbon brush wear detection mainly relies on manual measurement using measuring tools to determine how much the carbon brush length has decreased after a friction test. The greater the length reduction, the weaker the carbon brush's wear resistance. However, manual measurement and observation using measuring tools is not conducive to improving the efficiency of carbon brush wear detection. Furthermore, carbon brush wear detection is performed at one station, while the wear resistance test prior to carbon brush wear detection is performed at another station. The workflows for carbon brushes at these two stations cannot be combined into a single device for automation. Separating the wear resistance test and wear detection is not conducive to optimizing the device and further affects the efficiency of carbon brush wear detection. Utility Model Content

[0004] The purpose of this invention is to provide a carbon brush wear detection device for angular grinders to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A carbon brush wear detection device for an angle grinder includes:

[0007] A load-bearing beam, with bases fixed at both ends, and two support columns fixed at the top of the bases;

[0008] The conveying mechanism is capable of conveying carbon brushes to the friction station and the wear detection station. The conveying mechanism includes two pulleys that are rotatably connected to the corresponding support columns. A conveyor belt is connected between the two pulleys. Multiple limiting components are uniformly fixed on the outer side of the conveyor belt.

[0009] A friction mechanism is arranged on one side of the conveying mechanism. The friction mechanism includes two crossbeams that are fixed to each other, and multiple friction discs are rotated on the outer side of each crossbeam.

[0010] The linkage component, consisting of two parts, is arranged between the support column and the crossbeam, and can drive the pulley to rotate multiple friction discs simultaneously.

[0011] A pushing mechanism, arranged on one side of the conveying mechanism, is capable of pushing multiple carbon brushes to the friction disc for friction. The pushing mechanism includes an electric push rod fixed to the crossbeam, and two push rods are fixed at the output end of the electric push rod.

[0012] Multiple laser rangefinders are arranged in groups at both ends of the conveying mechanism to detect the length of carbon brushes after wear.

[0013] Furthermore, the limiting component includes two baffles arranged at equal intervals, and the baffles are fixedly connected to the conveyor belt.

[0014] Furthermore, the conveying mechanism also includes a connecting shaft that is rotatably connected to the pulley, and a one-way bearing is sleeved between the connecting shaft and the pulley. The tops of the two support columns are each fixed with a motor that can drive the corresponding connecting shaft to rotate.

[0015] Furthermore, two support blocks are fixed between the bottom surface of the crossbeam and the load-bearing beam. Multiple connecting shafts are rotatably mounted at equal intervals inside the crossbeam. One end of each connecting shaft is fixed to a friction disc, and the other end of each connecting shaft is fixed to a pulley. A synchronous belt is used to drive the transmission between two adjacent pulleys.

[0016] Furthermore, the linkage component includes:

[0017] The pulley three is sleeved on the outside of the connecting shaft one at the corresponding position, and a one-way bearing two is provided between the pulley three and the connecting shaft one;

[0018] Pulley four is sleeved and fixed on the outside of the connecting shaft two at the corresponding position, and synchronous belt two is used for transmission between pulley four and pulley three.

[0019] Furthermore, the output end of the electric actuator is fixed with a fixing plate that is fixedly connected to the two crossbeams, and a plurality of compression springs are fixed on one side of the crossbeams.

[0020] Furthermore, a U-shaped frame is fixed between each pair of laser rangefinders, and a limiting plate fixed to the crossbeam is arranged on the top of the conveyor belt.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. A conveyor belt is connected between two pulleys. Multiple baffles are fixed on the outside of the conveyor belt. The carbon brush is placed between two adjacent baffles so that the end of the carbon brush to be worn is aligned with the corresponding friction disc. The output end of the electric push rod retracts, causing the compression springs on the two push rods to push the multiple carbon brushes to a state of contact with the friction disc. The motor drives the connecting shaft to rotate counterclockwise. Under the transmission action of the linkage component, the multiple friction discs rotate simultaneously, which facilitates the friction test of the carbon brushes on the friction disc.

[0023] 2. The motor drives the connecting shaft to rotate clockwise, causing two pulleys to drive the conveyor belt. The conveyor belt moves the carbon brush after the friction test to the space between two laser rangefinders. When the carbon brush moves to the position between the two laser rangefinders, the two laser rangefinders measure the distances a and b from the end of the carbon brush to the laser rangefinders respectively. Based on the known distance c between the two laser rangefinders, the length of the carbon brush after the friction test is obtained by subtracting the sum of the values ​​of a and b from the value of c. By comparing this length with the length of the carbon brush before the test, the difference between the two lengths is proportional to the degree of wear of the carbon brush, thereby realizing the automatic detection of the wear condition of the carbon brush after the friction test.

[0024] 3. The carbon brush can be transported to the friction test position and the wear test position by means of the conveyor belt and baffle. It can also release the carbon brush after wear test from the outside of pulley one. Thus, the carbon brush wear test device can automatically detect carbon brush wear and perform carbon brush friction test at the same time. It combines the two workflows of wear resistance test and wear test, which helps to improve the overall efficiency of carbon brush wear test. Attached Figure Description

[0025] Figure 1 This is the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0027] Figure 3 This is a schematic diagram of the push mechanism in the outward movement state in this utility model;

[0028] Figure 4 This is a schematic diagram of the crossbeam, base, and conveying mechanism in this utility model;

[0029] Figure 5 This is a schematic diagram of the pushing mechanism structure in this utility model.

[0030] In the diagram: 100, load-bearing beam; 110, base; 111, support column; 112, motor; 120, pallet one; 130, L-shaped support plate; 131, pallet two; 200, conveying mechanism; 210, pulley one; 220, conveyor belt; 230, limiting component; 231, baffle; 240, connecting shaft one; 300, friction mechanism; 310, crossbeam; 311, connecting shaft two; 320, friction disc; 330, connecting rod; 340, pulley two; 400, linkage component; 410, pulley three; 420, pulley four; 500, pushing mechanism; 510, electric actuator; 511, fixing plate; 520, push rod; 530, compression spring; 600, laser rangefinder; 700, limiting plate; 710, connecting plate; 800, carbon brush body. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1, please refer to Figure 1 - Figure 5 In this embodiment of the present invention, a carbon brush wear detection device for an angle grinder includes a supporting beam 100, with bases 110 fixed at both ends of the supporting beam 100. Two support columns 111 are fixed to the top of the bases 110, and a conveying mechanism 200 is placed between the support columns 111. The conveying mechanism 200 includes two pulleys 210 rotatably connected to the corresponding support columns 111. A conveyor belt 220 is connected between the two pulleys 210. Multiple limiting components 230 are evenly fixed to the outer side of the conveyor belt 220. A [missing information - likely a device name or design] is provided on one side of the conveying mechanism 200. The system includes a friction mechanism 300, which comprises two mutually fixed crossbeams 310. Multiple friction discs 320 are rotatably mounted on the outer sides of each crossbeam 310. A linkage assembly 400 is provided between each of the two crossbeams 310 and the corresponding support column 111. A pushing mechanism 500 is provided on one side of the conveying mechanism 200. The pushing mechanism 500 includes an electric push rod 510 fixed to the crossbeam 310. Two push rods 520 are fixed at the output end of the electric push rod 510. Two laser rangefinders 600 are arranged at both ends of the conveying mechanism 200 to detect the length of carbon brush wear.

[0033] Specifically, multiple baffles 231 are evenly fixed on the outside of the conveyor belt 220. Carbon brushes can be placed between adjacent baffles 231 and conveyed to different workstations along the conveyor belt 220. After the carbon brushes are conveyed to the corresponding friction disc 320, the pushing mechanism 500 can push one end of the multiple carbon brushes to the workstation that abuts the friction disc 320. The friction disc 320 rotates to perform a friction test on the carbon brushes. After the friction test, the conveyor belt 220 can convey the carbon brushes to two laser rangefinders 600 in relative positions. The two laser rangefinders 600 measure the distances a and b between the two ends of the carbon brushes and the laser rangefinders 600 respectively. The length of the carbon brush after the test is calculated based on the difference between the known distance between the two laser rangefinders 600 and a and b. If there is a large difference in the length of the carbon brush before and after the test, it indicates that the carbon brush is severely worn. The carbon brushes after wear detection are conveyed and released to the outside along the conveyor belt 220. The entire carbon brush wear detection process also includes a carbon brush friction test, which helps to improve the overall efficiency of carbon brush wear detection.

[0034] like Figure 5 As shown, the limiting component 230 includes two baffles 231 arranged at equal intervals. The baffles 231 are fixedly connected to the conveyor belt 220. The distance between the two baffles 231 is the same as the width of the carbon brush, which makes it convenient to place the carbon brush between adjacent baffles 231 and transport it to different workstations with the conveyor belt 220.

[0035] like Figure 2 and Figure 5 As shown, the output end of the electric actuator 510 is fixed with a fixing plate 511 that is fixedly connected to two crossbeams 310. Multiple compression springs 530 are fixed on one side of the crossbeams 310. When carbon brushes are placed onto the conveyor belt 220, the output end of the electric actuator 510 extends, taking the push rod 520 away from the baffle 231. After the carbon brush is placed between adjacent baffles 231, the output end of the electric actuator 510 retracts, so that the push rod 520 flexibly pushes the carbon brush to a state of contact with the friction disc 320 through the compression springs 530. After the carbon brush is worn, the compression springs 530 will continue to push the carbon brush toward the friction disc 320 using the spring force, so that the carbon brush can always be in a state of friction during the carbon brush friction test.

[0036] In this embodiment, a fixing block is sleeved on one end of the electric actuator 510, and a connecting rod 330 is fixed on both ends of the fixing block. The connecting rod 330 is supported and fixed between the two crossbeams 310.

[0037] like Figure 1 As shown, a U-shaped frame is fixed between each group of two laser rangefinders 600. The base 110 and the supporting beam 100 are embedded and fixed with the corresponding U-shaped frame, so that the laser rangefinder 600 can be installed at a suitable measurement position.

[0038] like Figure 2 As shown, two support blocks are fixed between the bottom surface of a crossbeam 310 and the bearing beam 100. Multiple connecting shafts 311 rotate at equal intervals inside the crossbeam 310. One end of the connecting shaft 311 is fixed to the friction disc 320, and the other end of the connecting shaft 311 is fixed to a pulley 340. A synchronous belt is connected between two adjacent pulleys 340. The pulley 340 is a double-groove pulley, so that multiple pulleys 340 can drive multiple friction discs 320 to rotate simultaneously.

[0039] like Figure 1 , Figure 2 and Figure 4As shown, the conveying mechanism 200 also includes a connecting shaft 240 that is rotatably inserted into the pulley 210. A one-way bearing is sleeved between the connecting shaft 240 and the pulley 210. The tops of the two support columns 111 are each fixed with a motor 112 that can drive the corresponding connecting shaft 240 to rotate. The linkage assembly 400 includes a pulley 410 that is drivenly sleeved into the corresponding connecting shaft 240. A one-way bearing is provided between the pulley 410 and the connecting shaft 240. The linkage assembly 400 also includes a pulley 420 that is sleeved and fixed into the corresponding connecting shaft 311. A synchronous belt is drivenly connected between the pulley 420 and the pulley 410.

[0040] In this embodiment, when the output end of the motor 112 rotates clockwise, the connecting shaft 240 drives the pulley 210 to rotate through the one-way bearing, so that the conveyor belt 220 conveys the carbon brush. The connecting shaft 240 rotates freely inside the pulley 410 through the one-way bearing, and the linkage component 400 does not drive the friction mechanism 300 to operate.

[0041] In the above embodiment, when the output end of the motor 112 rotates counterclockwise, the connecting shaft 240 rotates freely inside the pulley 210 through the one-way bearing 1, the conveyor belt 220 does not convey carbon brushes, the connecting shaft 240 rotates the pulley 410 through the one-way bearing 2, the pulley 410 rotates through the synchronous belt 2, the pulley 420 rotates through the synchronous belt 2, and the pulley 420 rotates the connecting shaft 311, causing multiple friction discs 320 to rotate. During this process, the linkage component 400 drives the friction mechanism 300 to operate.

[0042] like Figure 4 As shown, a support plate 120 is fixed between the two bases 110. The support plate 120 is arranged below the conveyor belt 220 and serves to place carbon brushes below the conveyor belt 220.

[0043] like Figure 4 As shown, the interior of the crossbeam 310 has a groove-shaped cavity for accommodating the pulley 340 and the timing belt.

[0044] Example 2, based on Example 1, aims to provide stable support and transport of carbon brushes for the conveyor belt 220.

[0045] like Figure 1 and Figure 4 As shown, a limiting plate 700 fixed to the crossbeam 310 is arranged on the top of the conveyor belt 220. Two connecting plates 710 are fixed between the limiting plate 700 and the corresponding crossbeam 310. Two L-shaped support plates 130 are fixed on the top of the bearing beam 100. A second support plate 131 is fixed between the two L-shaped support plates 130. The second support plate 131 is arranged against the bottom surface of the conveyor belt 220.

[0046] In this embodiment, the limiting plate 700 blocks the carbon brushes above to prevent them from moving upwards during friction. The second support plate 131 enables the conveyor belt 220 to maintain horizontal conveying, ensuring stable transmission and friction testing of the carbon brushes above the conveyor belt 220.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for detecting wear of a carbon brush of a corner sander, characterized in that The utility model relates to a carbon brush friction and wear detection device and method, including: A bearing beam (100) is fixed with a base (110) at both ends, and the top of the base (110) is fixed with two support columns (111); A conveying mechanism (200) can convey carbon brushes to a friction station and a wear detection station, the conveying mechanism (200) includes two pulleys (210) rotatably connected with the corresponding position support columns (111), transmission connection is carried out between the two pulleys (210), and the outer side of the conveying belt (220) is uniformly fixed with a plurality of limiting assemblies (230); A friction mechanism (300) is arranged on one side of the conveying mechanism (200), the friction mechanism (300) includes two mutually fixed cross beams (310), and the outer side of the cross beam (310) is rotatably provided with a plurality of friction discs (320); Two linkage assemblies (400) are arranged between the support columns (111) and the cross beams (310), and can drive the pulleys (210) to rotate with the plurality of friction discs; A pushing mechanism (500) is arranged on one side of the conveying mechanism (200) and can push the plurality of carbon brushes to the friction disc position for friction, the pushing mechanism (500) includes an electric push rod (510) fixed with the cross beam (310), and the output end of the electric push rod (510) is fixed with two push rods (520); A plurality of laser range finders (600) are arranged in groups at both ends of the conveying mechanism (200) and can detect the length of the carbon brush after wear.

2. The angle grinder carbon brush wear detection device according to claim 1, characterized in that, The limiting assembly (230) includes two baffles (231) arranged at equal intervals, and the baffle (231) is fixedly connected with the conveying belt (220).

3. The angle grinder carbon brush wear detection device according to claim 1, characterized in that, The output end of the electric push rod (510) is fixed with a fixed plate (511) fixedly connected with the two cross beams (310), and the side of the cross beam (310) is fixedly connected with a plurality of extrusion springs (530).

4. The angle grinder carbon brush wear detection device according to claim 1, characterized in that, A plurality of laser range finders (600) are arranged in groups at both ends of the conveying mechanism (200) and can detect the length of the carbon brush after wear.

5. The angle grinder carbon brush wear detection device according to claim 1, characterized in that, The conveying mechanism (200) further includes a connecting shaft (240) rotatably connected with the pulley (210), a one-way bearing (240) is arranged between the connecting shaft (240) and the pulley (210), the top of the two support columns (111) is fixed with an electric motor (112) capable of driving the corresponding position connecting shaft (240) to rotate.

6. The angle grinder carbon brush wear detection device according to claim 5, characterized in that, Two support blocks are fixed between the bottom surface of one cross beam (310) and the bearing beam (100), a plurality of connecting shafts (311) are rotatably arranged at equal intervals in the cross beam (310), one end of the connecting shaft (311) is fixed with the friction disc (320), the other end of the connecting shaft (311) is fixed with the pulley (340), and the adjacent two pulleys (340) are transmissionally connected with a synchronous belt (one).

7. The angle grinder carbon brush wear detection device according to claim 6, characterized in that, The linkage assembly (400) includes: A pulley (410) is transmissionally connected on the outer side of the corresponding position connecting shaft (240), and a one-way bearing (two) is arranged between the pulley (410) and the connecting shaft (240); The fourth belt wheel (420) is fixedly sleeved on the outer side of the second connecting shaft (311) at a corresponding position, and the fourth belt wheel (420) and the third belt wheel (410) are in transmission connection through a second synchronous belt.

Images