Coal mining machine cutting pick convenient to maintain

Abstract

The utility model discloses a coal mining machine cutting pick convenient to maintain in the technical field of coal mining machine cutting picks, which comprises a mounting ring of a coal mining machine, a cutting pick which is mounted on the inner side of the mounting ring and is used for coal mining operation, and a lock catch component which is used for maintaining the cutting pick and dismounting the cutting pick, the lock catch component comprises a mounting through hole which is formed in the mounting ring and used for mounting the cutting teeth, a screw rod is in threaded connection with the other side of the mounting ring in a penetrating mode, one end of the screw rod is connected with a lock catch block, and a lock catch groove used for lock catch is formed in the position, close to one end, of one side of each cutting tooth. And the screw rod can rotate on the outer side of the mounting ring, so that the screw rod drives the lock catch block to enter and break away from the lock catch groove, and the problems that existing equipment is low in cutting tooth mounting stability and prone to falling off, cutting teeth cannot be conveniently replaced, the cutting teeth cannot be conveniently replaced and maintained after being abraded, the equipment is prone to damage or fracture, and the service life of the equipment is prolonged are solved. And the coal mining operation efficiency of the coal mining machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining machine picks, in particular to a coal mining machine pick which is easy to maintain. Background Art

[0002] A pick is a tool used by coal mining machines and mining machinery to cut rock formations. There are roughly the following types: one is a knife-type pick and the other is a pick-type pick. In addition to knife-type picks and pick-type picks, there are also tunneling teeth, rotary digging teeth, milling teeth, excavator bucket teeth, etc. of tunneling machines. According to the different functions of the picks, the categories and types are also different, but usually knife-type picks and pick-type picks are more widely used. Among them, knife-type picks are widely used in knife-type spiral drums of coal mining machines in underground coal mines. They can effectively increase the lump coal rate, the coal cutting speed is relatively high, the feed depth is large, and the dust reduction ability is strong. The pick includes a cutter body and a cutter head. Since the cutter head is mainly used to cut rock formations, the cutter head is the main wear part. The existing installation methods for the cutter head are mainly divided into welding and clamping. Welding replacement is more laborious and cumbersome, and clamping is prone to falling off. The installation stability is low, which affects the working progress of the coal mining machine.

[0003] The existing device makes the replacement operation of the picks after installation and fixation rather cumbersome, the installation stability of the picks is low, they are prone to falling off, and the picks cannot be replaced conveniently, which is not conducive to replacement and maintenance of the picks after wear, and can easily cause damage or breakage of the equipment, resulting in a decrease in the coal mining efficiency of the coal mining machine. Therefore, technical personnel in this field provide a coal mining machine pick that is easy to maintain to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a coal mining machine pick which is easy to maintain, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mining machine pick that is easy to maintain, comprising a mounting ring of the coal mining machine, a pick installed inside the mounting ring for coal mining operations, and a locking component for maintaining the pick for disassembly and assembly, the locking component comprising a mounting through hole for mounting the pick, a screw rod threadedly connected through the other side of the mounting ring, a locking block connected to one end of the screw rod, and a locking groove for locking is provided on one side of the pick near one end;

[0006] The screw is threadedly connected to the mounting ring, the screw is located inside the locking block and is rotatably connected thereto, and the locking block and the locking groove have a right-angle trapezoidal cross section.

[0007] Preferably: the locking component also includes a first limiting hole respectively opened on both sides of the cutting tooth, and a second limiting hole is respectively opened on both sides of the mounting through hole, and the first limiting hole and the second limiting hole are spliced ​​and fitted with limiting blocks embedded inside, and the cross-sections of the first limiting hole and the second limiting hole are both trapezoidal.

[0008] Preferably, grooves are respectively provided on both sides of the limit block, and the cross-section of the groove is an isosceles trapezoid.

[0009] Preferably, a plurality of positioning grooves arranged circumferentially are provided on the outer side of the pick, a plurality of positioning bars arranged circumferentially are embedded in the installation through hole, and the positioning bars are slidably connected to the positioning block.

[0010] Preferably, one end of the screw rod is provided with an anti-slip portion for preventing slipping, and the anti-slip portion is rotatably connected to the locking block.

[0011] Preferably, a plurality of notches arranged circumferentially are formed on the outer side of the pick, and the cross-section of the notches is arc-shaped.

[0012] Preferably: a sealing block is installed at the top of the mounting ring and directly above the screw rod, and the sealing block is threadedly connected to the mounting ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, by arranging a screw rod, a locking block and a locking groove, the screw rod can rotate on the outside of the mounting ring, so that the screw rod drives the locking block to enter and disengage from the locking groove, so that the locking block can lock and fix the pick to prevent the pick from detaching. At the same time, it can also facilitate the pick to detach from the mounting through hole on the inner side of the mounting ring, so that the operator can inspect, maintain or replace the pick.

[0015] 2. In the utility model, by setting the first limiting hole, the second limiting hole and the limiting block, the cross-sections of the first limiting hole and the second limiting hole are both trapezoidal, and the first limiting hole and the second limiting hole are aligned when the pick is embedded in the mounting through hole, and then the limiting block is knocked and inserted into the first limiting hole and the second limiting hole, so that the two limiting blocks can limit and fix the mounting ring and the pick.

[0016] 3. In the utility model, by setting the positioning groove and the positioning strip, the positioning strip and the positioning block are slidably connected, and when the pick enters the installation through hole, multiple positioning strips are embedded in the positioning groove, so that the multiple positioning strips can limit and fix the pick to prevent the pick from shaking and causing uneven force and damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a left-side cutaway stereoscopic view of the overall structure of the utility model;

[0019] Figure 3 The overall structure of the utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 The overall structure of the utility model Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 It is a left-side sectional stereoscopic diagram of the mounting ring, the mounting through hole, the first limiting through hole and the positioning strip of the overall structure of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the pick, locking groove, second limiting hole, positioning groove and notch of the overall structure of the utility model.

[0023] In the figure: 1. mounting ring; 2. cutting tooth; 3. mounting through hole; 4. screw; 5. locking block; 6. locking groove; 7. first limiting hole; 8. second limiting hole; 9. limiting block; 10. groove; 11. positioning groove; 12. positioning strip; 13. anti-slip part; 14. notch; 15. sealing block. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 to Figure 6 In an embodiment of the utility model, a coal mining machine pick that is easy to maintain includes a mounting ring 1 of the coal mining machine, a pick 2 installed on the inner side of the mounting ring 1 for coal mining operations, and a locking component for maintaining the pick 2 for disassembly and assembly. The locking component includes a mounting through hole 3 opened inside the mounting ring 1 for mounting the pick 2, a screw 4 is threaded through the other side of the mounting ring 1, a locking block 5 is connected to one end of the screw 4, a locking groove 6 for locking is opened on one side of the pick 2 and near one end, the mounting through hole 3 in the mounting ring 1 can provide space for the pick 2 to be inserted, and the lock block 5 is used to lock and fix the pick 2.

[0026] When in use, the screw 4 can be rotated on the outside of the mounting ring 1, so that the screw 4 drives the locking block 5 to enter and disengage from the locking groove 6, so that the locking block 5 can lock and fix the pick 2 to prevent the pick 2 from detaching. At the same time, it can also facilitate the pick 2 to detach from the mounting hole 3 on the inside of the mounting ring 1, so that the operator can inspect, maintain or replace the pick 2.

[0027] In one embodiment, specifically, the locking component also includes a first limiting hole 7 respectively opened on both sides of the cutting tooth 2, and a second limiting hole 8 is respectively opened on both sides of the mounting through hole 3. The first limiting hole 7 and the second limiting hole 8 are spliced ​​and fitted with limiting blocks 9 embedded inside, and the cross-sections of the first limiting hole 7 and the second limiting hole 8 are both trapezoidal.

[0028] Among them, by setting the first limiting hole 7, the second limiting hole 8 and the limiting block 9, the cross-sections of the first limiting hole 7 and the second limiting hole 8 are both trapezoidal. When the pick 2 is embedded in the mounting through hole 3, the first limiting hole 7 and the second limiting hole 8 are aligned, and then the limiting block 9 is knocked and inserted into the first limiting hole 7 and the second limiting hole 8, so that the two limiting blocks 9 can limit and fix the mounting ring 1 and the pick 2.

[0029] Furthermore, a plurality of circumferentially arranged positioning grooves 11 are provided on the outer side of the pick 2, and a plurality of circumferentially arranged positioning strips 12 are embedded in the mounting hole 3. The positioning strips 12 and the positioning block are slidably connected. When the pick 2 enters the mounting hole 3, the plurality of positioning strips 12 are embedded in the positioning grooves 11, so that the plurality of positioning strips 12 can limit and fix the pick 2 to prevent the pick 2 from shaking and causing damage due to uneven force.

[0030] In one embodiment, a plurality of notches 14 arranged circumferentially are provided on the outer side of the pick 2, which can increase the contact area between the pick 2 and the coal block, so that the pick 2 can scrape and separate the coal block, thereby improving the coal mining efficiency.

[0031] Among them, a sealing block 15 is installed at the top of the mounting ring 1 and directly above the screw 4, which can enable the sealing block 15 to seal the screw 4 to prevent coal dust from clogging the top of the screw 4 and affecting the convenience of disassembly.

[0032] The working principle of this utility model:

[0033] First, insert the pick 2 into the mounting through hole 3 on the inner side of the mounting ring 1. At this time, the positioning block is embedded in the positioning groove 11. Then the screw 4 drives the locking block 5 to enter the locking groove 6. At the same time, the screw 4 drives the anti-slip part 13 to rotate in the locking block 5. At this time, the locking block 5 locks and fixes the pick 2. When the pick 2 is embedded in the mounting through hole 3, the first limiting hole 7 and the second limiting hole 8 are aligned. Then the limiting block 9 is knocked and inserted into the first limiting hole 7 and the second limiting hole 8. At the same time, the grooves 10 on both sides of the limiting block 9 are respectively engaged with the mounting ring 1 and the pick 2. Then, the two limiting blocks 9 limit and fix the mounting ring 1 and the pick 2. At the same time, multiple positioning strips 12 are embedded in the positioning groove 11. At this time, multiple positioning strips 12 limit and fix the pick 2. Then the sealing block 15 seals just above the screw 4.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mining machine pick that is easy to maintain, comprising a coal mining machine mounting ring (1), a pick (2) mounted inside the mounting ring (1) for coal mining operations, and a locking component for maintaining and disassembling the pick (2), characterized in that: The locking component comprises a mounting through hole (3) provided inside the mounting ring (1) for mounting the pick (2); a screw rod (4) is threadedly connected through the other side of the mounting ring (1); one end of the screw rod (4) is connected to a locking block (5); and a locking groove (6) for locking is provided on one side of the pick (2) and near one end; The screw rod (4) is threadedly connected to the mounting ring (1); the screw rod (4) is located inside the locking block (5) and is rotatably connected thereto; the locking block (5) and the locking groove (6) have right-angle trapezoidal cross sections.

2. The coal mining machine pick that is easy to maintain according to claim 1, characterized in that: The locking component also includes a first limiting hole (7) respectively opened on both sides of the pick (2), and a second limiting hole (8) is respectively opened on both sides of the mounting through hole (3). The first limiting hole (7) and the second limiting hole (8) are spliced ​​and fitted with limiting blocks (9) embedded inside. The cross-sections of the first limiting hole (7) and the second limiting hole (8) are both trapezoidal.

3. The coal mining machine pick that is easy to maintain according to claim 2, characterized in that: Grooves (10) are respectively provided on both sides of the limit block (9), and the cross section of the groove (10) is an isosceles trapezoid.

4. The coal mining machine pick that is easy to maintain according to claim 1, characterized in that: The outer side of the pick (2) is provided with a plurality of circumferentially arranged positioning grooves (11), the interior of the mounting through hole (3) is embedded with a plurality of circumferentially arranged positioning strips (12), and the positioning strips (12) are slidably connected to the positioning block.

5. The coal mining machine pick that is easy to maintain according to claim 1, characterized in that: An anti-slip portion (13) for preventing slipping is provided at one end of the screw rod (4), and the anti-slip portion (13) is rotatably connected to the locking block (5).

6. The coal mining machine pick that is easy to maintain according to claim 1, characterized in that: A plurality of notches (14) arranged circumferentially are provided on the outer side of the pick (2), and the cross section of the notches (14) is arc-shaped.

7. The coal mining machine pick that is easy to maintain according to claim 1, characterized in that: A sealing block (15) is installed at the top of the mounting ring (1) and directly above the screw rod (4), and the sealing block (15) is threadedly connected to the mounting ring (1).

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