A pick for a coal mining machine

Abstract

The utility model relates to the technical field of coal mining, and disclose a kind of pick for coal mining machine, including mounting plate and the mounting shell of activity connection in mounting plate one side, further include: fixedly connected to the pick head of mounting shell one side, the inner chamber of mounting shell is rotatably connected with bevel gear, the inner chamber of mounting shell is rotatably connected with first gear strip, the inner chamber of mounting shell is provided with rotating mechanism;The utility model can make multiple threaded rods rotate simultaneously under the cooperation of bevel gear, first gear strip and rotating mechanism, let threaded rod and the inner chamber of mounting plate mutually install, facilitate staff to install pick head, to reduce the labor intensity of staff, simultaneously under the cooperation of second fixed block, first fixed block and mounting mechanism, articulated rod can be assisted to support pick head, effectively reduce the fracture situation of pick head due to reaction force, to improve the service life of pick head.

Description

Technical Field

[0001] This utility model relates to the field of coal mining technology, specifically to a cutting tooth for a coal mining machine. Background Technology

[0002] Mining cutter teeth are one of the vulnerable parts in coal mining and tunneling machinery. They are the main tools for cutting and crushing coal. Cutter teeth are mainly used on mining machinery such as tunneling machines and coal mining machines to directly break rocks and cut coal. They are usually used in conjunction with tooth sleeves and tooth seats.

[0003] However, during the use of most coal mining cutter picks, workers need to manually rotate multiple bolts to install the picks in the corresponding positions on the machine. Each bolt requires multiple rotations to tighten. Because the installation position of the picks is relatively narrow, it restricts the workers' operating space, thus increasing their workload. At the same time, most picks will frequently and violently collide with coal and rock during use. However, this high-intensity collision will bring huge pressure impacts to the picks. Due to the high hardness of coal and rock, the picks will be subjected to great reaction forces, leading to breakage and reducing their service life. Utility Model Content

[0004] The purpose of this invention is to provide a cutting tooth for a coal mining machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutting tooth for a coal mine excavator, comprising a mounting plate and a mounting shell movably connected to one side of the mounting plate, and further comprising:

[0006] A cutting tooth head is fixedly connected to one side of the mounting shell. A bevel gear is rotatably connected to the inner cavity of the mounting shell. A first gear rack is rotatably connected to the inner cavity of the mounting shell. A rotating mechanism is provided in the inner cavity of the mounting shell. A first fixing block is fixedly connected to the surface of the cutting tooth head.

[0007] A hinge rod is hinged to the surface of the mounting plate, and a second fixing block is hinged to the other end of the hinge rod. A connecting sleeve is fixedly connected to the surface of the second fixing block, and an mounting sleeve is fixedly connected to the surface of the first fixing block. An installation mechanism is provided on one side of the mounting sleeve.

[0008] Preferably, the rotating mechanism includes a second gear rack fixedly connected to the surface of the first gear rack, a spur gear meshing on one side of the second gear rack, a threaded rod fixedly connected to one side of the spur gear, and the surface of the threaded rod being threadedly connected to the inner cavity of the mounting plate.

[0009] Preferably, the mounting mechanism comprises a rotating block arranged on one side of the mounting sleeve, one side of the rotating block is fixedly connected with a lead screw, the surface of the lead screw is threadedly connected with the inner cavity of the mounting sleeve, the surface of the lead screw is threadedly connected with the inner cavity of the connecting sleeve, and the surface of the lead screw is threadedly connected with a nut.

[0010] Preferably, the top of the bevel gear is provided with a corresponding groove, and the corresponding groove is polygonal.

[0011] Preferably, the size of the second fixed block is larger than that of the mounting shell.

[0012] Preferably, the number of spur gears is multiple and corresponds to the number of threaded rods.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a bevel gear, first gear strip and rotating mechanism cooperate, can make multiple threaded rods rotate simultaneously, lets the threaded rod and the inner chamber of mounting plate install each other, and the labor of staff is reduced, and the cooperation of second fixed block, first fixed block and mounting mechanism can make articulated rod assist supporting to the cutting tooth head, effectively reduces the fracture of cutting tooth head due to reaction force, thereby prolonging the service life of cutting tooth head. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three -dimensional structure schematic diagram in the utility model;

[0016] Figure 2 It is the sectional structure schematic diagram of mounting shell in the utility model;

[0017] Figure 3 It is the structure schematic diagram of cutting tooth head and bevel gear in the utility model;

[0018] Figure 4 It is the structure schematic diagram of rotating mechanism in the utility model;

[0019] Figure 5 It is the structure schematic diagram of mounting mechanism in the utility model.

[0020] In the drawing: 1, mounting plate;2, mounting shell;3, cutting tooth head;4, bevel gear;5, first gear strip;6, rotating mechanism;61, second gear strip;62, spur gear;63, threaded rod;7, first fixed block;8, articulated rod;9, second fixed block;10, mounting sleeve;11, connecting sleeve;12, mounting mechanism;121, rotating block;122, lead screw;123, nut. DETAILED DESCRIPTION

[0021] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0022] Please refer to Figures 1-5 As shown in FIG. 1, a pick tooth for a coal mining machine, comprising a mounting plate 1, a mounting shell 2 movably connected to one side of the mounting plate 1, a pick head 3 fixedly connected to one side of the mounting shell 2, under the cooperation of the mounting plate 1 and the mounting shell 2, the pick head 3 can work, so that the pick head 3 mines and crushes coal, a conical gear 4 is rotatably connected in the inner cavity of the mounting shell 2, a corresponding slot is formed in the top of the conical gear 4 and the corresponding slot is designed as a polygon, a first gear strip 5 is rotatably connected in the inner cavity of the mounting shell 2 under the action of the conical gear 4, a rotating mechanism 6 is arranged in the inner cavity of the mounting shell 2, under the cooperation of the conical gear 4 and the first gear strip 5, the rotating mechanism 6 can work, the mounting shell 2 and the mounting plate 1 can be connected and installed with each other, so that the staff can easily install the pick head 3, the labor of the staff is reduced, and the installation rate of the staff for the pick head 3 is accelerated, a first fixed block 7 is fixedly connected to the surface of the pick head 3, a hinged rod 8 is hingedly connected to the surface of the mounting plate 1, a second fixed block 9 is hingedly connected to the other end of the hinged rod 8, the size of the second fixed block 9 is larger than that of the mounting shell 2, a connecting sleeve 11 is fixedly connected to the surface of the second fixed block 9, a mounting sleeve 10 is fixedly connected to the surface of the first fixed block 7, the connecting sleeve 11 and the mounting sleeve 10 are used in cooperation with each other, a mounting mechanism 12 is arranged on one side of the mounting sleeve 10, under the action of the mounting mechanism 12, the connecting sleeve 11 and the mounting sleeve 10 can be installed with each other, so that the first fixed block 7 and the second fixed block 9 are installed, the hinged rod 8 assists in supporting the pick head 3, effectively reduces the situation that the pick head 3 is broken due to pressure during work, increases the stability of the pick head 3 during work, and thus increases the service life of the pick head 3.

[0023] The rotating mechanism 6 comprises a second gear bar 61, the surface of the second gear bar 61 is fixedly connected with the surface of the first gear bar 5, one side of the second gear bar 61 is engaged with a spur gear 62, one side of the spur gear 62 is fixedly connected with a threaded rod 63, the surface of the threaded rod 63 is threadedly connected with the inner cavity of the mounting plate 1, the number of the spur gears 62 is plural and corresponds to the number of the threaded rods 63, under the action of the bevel gear 4, the first gear bar 5 can drive the second gear bar 61 to rotate in the inner cavity of the mounting shell 2, the second gear bar 61 drives the plurality of threaded rods 63 to rotate simultaneously through the spur gear 62, so that the threaded rods 63 are connected with the inner cavity of the mounting plate 1, the mounting shell 2 and the mounting plate 1 can be connected and mounted, the threaded rods 63 do not need to be rotated and mounted for multiple times by the staff, the labor amount of the staff is reduced, and the installation rate of the cutting tooth head 3 by the staff is accelerated.

[0024] The mounting mechanism 12 comprises a rotating block 121 arranged on one side of the mounting sleeve 10, one side of the rotating block 121 is fixedly connected with a lead screw 122, the surface of the lead screw 122 is threadedly connected with the inner cavities of the mounting sleeve 10 and the connecting sleeve 11, and the surface of the lead screw 122 is threadedly connected with a nut 123. Under the action of the rotating block 121, the lead screw 122 can rotate in the inner cavities of the mounting sleeve 10 and the connecting sleeve 11, and under the cooperation of the nut 123, the mounting sleeve 10 and the connecting sleeve 11 can be connected with each other, so that the hinged rod 8 assists the first fixed block 7 through the second fixed block 9, effectively reduces the fracture of the cutting tooth head 3 caused by pressure during work, increases the stability of the cutting tooth head 3 during work, and prolongs the service life of the cutting tooth head 3.

[0025] Working principle: when the staff needs to install the cutting tooth head 3 on one side of the mounting plate 1, the staff first moves the mounting shell 2 to one side of the mounting plate 1 through the second fixed block 9, then rotates the first gear bar 5 in the inner cavity of the mounting shell 2 through the bevel gear 4, and drives the plurality of threaded rods 63 to rotate simultaneously through the second gear bar 61 and the spur gear 62, so that the surface of the threaded rods 63 is connected with the inner cavity of the mounting plate 1, thereby installing the cutting tooth head 3 on one side of the mounting plate 1. Then the staff rotates the lead screw 122 in the inner cavities of the mounting sleeve 10 and the connecting sleeve 11 through the rotating block 121, rotates the nut 123 on the surface of the lead screw 122, moves the nut 123 to one side of the connecting sleeve 11, and connects the mounting sleeve 10 and the connecting sleeve 11 with each other, so that the hinged rod 8 supports the first fixed block 7 through the second fixed block 9, and assists the cutting tooth head 3, and then the staff can mine and crush the coal mine through the cutting tooth head 3.

[0026] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0027] While the embodiments of the present application have been shown and described with respect to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. Therefore, the scope of the application should not be limited by the embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

1. A cutting tooth for a coal mining machine, comprising a mounting plate (1) and a mounting shell (2) movably connected to one side of the mounting plate (1), characterized in that, Also includes: A cutting tooth head (3) is fixedly connected to one side of the mounting shell (2). A bevel gear (4) is rotatably connected to the inner cavity of the mounting shell (2). A first gear rack (5) is rotatably connected to the inner cavity of the mounting shell (2). A rotating mechanism (6) is provided in the inner cavity of the mounting shell (2). A first fixing block (7) is fixedly connected to the surface of the cutting tooth head (3). A hinge rod (8) is hinged to the surface of the mounting plate (1). A second fixing block (9) is hinged to the other end of the hinge rod (8). A connecting sleeve (11) is fixedly connected to the surface of the second fixing block (9). An mounting sleeve (10) is fixedly connected to the surface of the first fixing block (7). An installation mechanism (12) is provided on one side of the mounting sleeve (10).

2. The cutting tooth for a coal mining machine according to claim 1, characterized in that: The rotating mechanism (6) includes a second gear rack (61) fixedly connected to the surface of the first gear rack (5). A spur gear (62) meshes with one side of the second gear rack (61). A threaded rod (63) is fixedly connected to one side of the spur gear (62). The surface of the threaded rod (63) is threadedly connected to the inner cavity of the mounting plate (1).

3. The cutting tooth for a coal mining machine according to claim 1, characterized in that: The installation mechanism (12) includes a rotating block (121) disposed on one side of the installation sleeve (10), a lead screw (122) fixedly connected to one side of the rotating block (121), the surface of the lead screw (122) being threadedly connected to the inner cavity of the installation sleeve (10), the surface of the lead screw (122) being threadedly connected to the inner cavity of the connecting sleeve (11), and a nut (123) being threadedly connected to the surface of the lead screw (122).

4. The cutting tooth for a coal mining machine according to claim 1, characterized in that: The top of the bevel gear (4) has a corresponding groove, and the corresponding groove is a polygonal design.

5. A cutting tooth for a coal mining machine according to claim 1, characterized in that: The second fixing block (9) is larger than the mounting shell (2).

6. A cutting tooth for a coal mining machine according to claim 2, characterized in that: The number of spur gears (62) is multiple and corresponds to the number of threaded rods (63).

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