Double-insurance anti-falling coal cutting pick mounting structure

Abstract

The utility model discloses a double-insurance anti-falling coal cutting pick installation structure, and particularly relates to the technical field of coal cutting picks of coal mining mechanisms, the double-insurance anti-falling coal cutting pick installation structure comprises a head part, a circular truncated cone part, an umbrella part and an installation rod, the head part is installed on one side of the circular truncated cone part, the umbrella part is arranged on one side of the circular truncated cone part far away from the head part, and the installation rod is arranged on one side of the umbrella part far away from the circular truncated cone part. An alloy ball is arranged on the outer surface of the circular truncated cone part, a wear-resisting strip is arranged on the outer diameter surface of the umbrella part, a first limiting groove and a second limiting groove are formed in the outer diameter surface of the mounting rod, a base is arranged at one end of the mounting rod, the mounting rod is connected with a clamping spring in a limiting mode through the first limiting groove, and the mounting rod is connected with a clamping hoop in a limiting mode through the second limiting groove. Compared with a single-insurance fixing mode in the prior art, a double-insurance structure is formed by a dynamic snap spring pre-tightening structure and a mechanical hoop locking structure, so that the tightness of structural connection when the device is used is ensured, and the coal cutting teeth are prevented from falling off.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal pick technology field of coal mining mechanism, more specifically, the utility model relates to a double insurance anti -drop coal pick mounting structure. BACKGROUND

[0002] Coal pick is the key cutting component of coal mining machine, heading machine and other mining machinery, and is praised as the "tooth" of coal mining machine. As the vulnerable part directly contacting coal and rock, its performance directly affects the coal mining efficiency, energy consumption, equipment stability and safety;

[0003] For example, the utility model number CN201921397560.X discloses a coal pick, including base body and the drill bit arranged at the top of base body, the base body is composed of the umbrella part in front and the mounting rod behind, the front part of umbrella part is the high-strength circular truncated cone part after heat treatment, the outside of the rear part of umbrella part is equipped with multiple inclined wear-resistant strips, and the front part and rear part of umbrella part are the shrinkable waist part. The coal pick has high overall hardness, good wear resistance, reliable work, and the wear-resistant strips participate in cutting coal, improving the coal mining efficiency. At present, the coal mine pick mounting mainly adopts single insurance fixing mode:

[0004] 1. Spring clip fixing: positioning is realized by embedding the spring clip into the middle part of the tooth body, but the following defects exist: the spring clip is prone to fatigue failure under alternating load for a long time, the spring clip tension attenuates due to vibration, the fixing reliability decreases, and the spring clip is easy to fly out after wear;

[0005] 2. Clamp fixing: positioning is realized by embedding the spring clip into the tail part of the tooth body, but the following defects exist: the clamp is prone to loosening during high-speed heading of the heading machine, and the pick is easy to fly out, therefore, a double anti-drop structure is provided to solve the problem of insufficient fixing reliability of the traditional single insurance, and the double insurance structure is composed of a dynamic spring pre-tightening system and a mechanical clamp locking device.

[0006] Therefore, the double insurance anti-drop coal pick mounting structure is provided for the above problems. UTILITY MODEL CONTENTS

[0007] In order to overcome the above defects of the prior art, the utility model provides a double insurance anti-drop coal pick mounting structure to solve the problems in the above background art.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: a double insurance anti -drop coal pick mounting structure, including head, round table department, umbrella department and installation rod, the head is installed in one side of round table department, and the side away from the head of round table department is provided with umbrella department, the side away from the round table department of umbrella department is provided with installation rod, the outer surface of round table department is provided with alloy ball, the outer diameter surface of umbrella department is provided with wear -resisting strip, the outer diameter surface of installation rod is provided with first limit groove and second limit groove, one end of installation rod is provided with base, installation rod is connected with the snap spring through first limit groove limit, installation rod is connected with the clamp through second limit groove limit.

[0009] Preferably, the first limit groove is circular ring type, and the first limit groove depth is 1.5-3mm, and the first limit groove width is 3-12mm.

[0010] Preferably, the second limit groove is wedge-shaped concave table, and the second limit groove depth is 1.5-3mm, and the second limit groove width is 1.5-3mm, and the slope of the second limit groove is 120 °.

[0011] Preferably, the snap spring is wave type, and the snap spring is made of Ni-Ti memory alloy material, and the clamp is wedge-shaped boss, and the clamp is made of titanium alloy material.

[0012] Preferably, the groove of the first limit groove is the same as the shape of the snap spring, and the first limit groove snap spring constitutes a snap-fit structure, and the groove of the second limit groove is the same as the shape of the clamp, and the second limit groove and the clamp constitute a snap-fit structure.

[0013] Preferably, the outer diameter surface of the base is provided with a spiral stress groove, and the inside of the spiral stress groove is filled with a low-melting-point alloy, and the low-melting-point alloy is made of Bi58Sn42 material.

[0014] Preferably, the outer surface of the base is laser cladded with a 0.3mm tungsten carbide wear-resistant layer, and the alloy ball is made of a ball body made of YG6 hard alloy and YG6x hard alloy.

[0015] The utility model discloses the technical effect and advantage:

[0016] Compared with the prior art, the double insurance anti-drop coal pick mounting structure in use, wherein relative to the single insurance fixing mode in the prior art, the utility model structure is composed of dynamic snap spring pre-tightening structure and mechanical clamp locking structure double insurance structure, and then guarantee the fastening of the structure connection of the utility model device in use, avoid coal pick to drop.

[0017] Compared with the prior art, the double insurance anti-falling coal pick mounting structure is limited and connected among the head, the circular cone part, the umbrella part, the mounting rod, the alloy ball and the wear-resistant strip, so as to guarantee the stability of the structure among the head, the circular cone part, the umbrella part, the mounting rod, the alloy ball and the wear-resistant strip, and the outer diameter of the mounting rod is provided with the first limiting groove and the second limiting groove, the mounting rod is connected with the snap spring and the clamp through the first limiting groove and the second limiting groove, the double insurance structure is formed through the dynamic snap spring pre-tightening structure and the mechanical clamp locking structure, so as to guarantee the fastening of the structure connection of the device in use, avoid the coal pick from falling off, and the snap spring is made of Ni-Ti memory alloy material, and the coal pick generates high temperature in use, so as to facilitate the self-locking of the snap spring made of Ni-Ti memory alloy material, thereby increasing the stability of the connection of the device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a front view structural schematic diagram of the utility model.

[0019] Fig. 2 It is a front view structural schematic diagram of the utility model.

[0020] Fig. 3 It is a mounting rod partial section structural schematic diagram of the utility model.

[0021] Fig. 4 It is a snap spring side view structural schematic diagram of the utility model.

[0022] The figure mark is: 1, head; 2, circular cone part; 3, umbrella part; 4, mounting rod; 5, alloy ball; 6, wear-resistant strip; 7, first limiting groove; 8, second limiting groove; 9, base; 10, snap spring; 11, clamp. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model, apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0024] EMBODIMENT

[0025] As the attached Figs. 1 to 4The installation structure of the double insurance anti-falling coal pick shown, including head 1, round table 2, umbrella 3 and installation rod 4, head 1 is installed on one side of round table 2, and the side of round table 2 away from head 1 is provided with umbrella 3, the side of umbrella 3 away from round table 2 is provided with installation rod 4, the outer surface of round table 2 is provided with alloy ball 5, the outer diameter surface of umbrella 3 is provided with wear-resistant strip 6, the outer diameter surface of installation rod 4 is provided with first limiting groove 7 and second limiting groove 8, one end of installation rod 4 is provided with base 9, installation rod 4 is connected with clamp spring 10 through first limiting groove 7, installation rod 4 is connected with clamp 11 through second limiting groove 8, first limiting groove 7 is circular, the groove depth of first limiting groove 7 is 1.5-3mm, and the groove width of first limiting groove 7 is 3-12mm, second limiting groove 8 is wedge-shaped concave, the groove depth of second limiting groove 8 is 1.5-3mm, and the groove width of second limiting groove 8 is 1.5-3mm, the slope of second limiting groove 8 is 120°, clamp spring 10 is wave-shaped, clamp spring 10 is made of Ni-Ti memory alloy material, clamp 11 is wedge-shaped convex, clamp 11 is made of titanium alloy material, the groove of first limiting groove 7 is the same as the shape of clamp spring 10, and first limiting groove 7 and clamp spring 10 constitute a snap-fit structure, the groove of second limiting groove 8 is the same as the shape of clamp 11, and second limiting groove 8 and clamp 11 constitute a snap-fit structure, the outer diameter surface of base 9 is provided with spiral stress groove, the inside of spiral stress groove is filled with low-melting-point alloy, the low-melting-point alloy is made of Bi58Sn42 material, the outer surface of base 9 is laser cladded with 0.3mm tungsten carbide wear-resistant layer, alloy ball 5 is made of YG6 hard alloy and YG6x hard alloy.

[0026] The utility model discloses a working process as follows: the head 1, the circular table part 2, umbrella part 3, mounting rod 4, alloy ball 5 and wear strip 6 are all position connection, so as to guarantee the stability of the structure between the head 1, the circular table part 2, umbrella part 3, mounting rod 4, alloy ball 5 and wear strip 6, and the outer diameter of mounting rod 4 is provided with first limit groove 7 and second limit groove 8, and mounting rod 4 is connected with snap spring 10 and clamp 11 by first limit groove 7 and second limit groove 8, wherein the double insurance structure is formed by dynamic snap spring 10 pre-tightening structure and mechanical clamp 11 locking structure, wherein first limit groove 7 is circular ring type, and the groove depth of first limit groove 7 is 1.5-3mm, and the groove width of first limit groove 7 is 3-12mm, second limit groove 8 is wedge-shaped concave platform, and the groove depth of second limit groove 8 is 1.5-3mm, and the groove width of second limit groove 8 is 1.5-3mm, the inclined plane of second limit groove 8 is 120 DEG, and snap spring 10 is wave type, and snap spring 10 is made of including but not limited to Ni-Ti memory alloy material, and clamp 11 is wedge-shaped boss, and clamp 11 is made of including but not limited to titanium alloy material, the groove of first limit groove 7 is same with the shape of snap spring 10, and first limit groove 7 snap spring 10 constitutes the buckling structure, the groove of second limit groove 8 is same with the shape of clamp 11, and second limit groove 8 and clamp 11 constitute the buckling structure, and the outer diameter surface of base 9 is provided with spiral stress groove, thereby guaranteeing the fastening of the structure connection of the utility model device when using, avoiding coal tooth drop, and wherein snap spring 10 adopts Ni-Ti memory alloy material, and coal tooth generates high temperature when using, thereby being favorable for the self-locking of Ni-Ti memory alloy material snap spring 10, to increase the stability of the connection of the device.

Claims

1. A double safety anti-falling coal pick mounting structure, comprising a head (1), a circular truncated cone (2), an umbrella (3) and a mounting rod (4), characterized in that: The head (1) is installed on one side of the circular table part (2), and the umbrella part (3) is arranged on the side of the circular table part (2) away from the head (1), the umbrella part (3) is provided with a mounting rod (4) on the side away from the circular table part (2), the outer surface of the circular table part (2) is provided with an alloy ball (5), the outer diameter surface of the umbrella part (3) is provided with a wear-resistant strip (6), the outer diameter surface of the mounting rod (4) is provided with a first limiting groove (7) and a second limiting groove (8), one end of the mounting rod (4) is provided with a base (9), the mounting rod (4) is connected with a circlip (10) through the first limiting groove (7), and the mounting rod (4) is connected with a clamp (11) through the second limiting groove (8).

2. The double safety anti-falling coal pick mounting structure according to claim 1, characterized in that: The first limiting groove (7) is in a circular ring type, the groove depth of the first limiting groove (7) is 1.5-3mm, and the groove width of the first limiting groove (7) is 3-12mm.

3. The double safety anti-falling coal pick mounting structure according to claim 1, characterized in that: The second limiting groove (8) is in a wedge-shaped recess shape, the groove depth of the second limiting groove (8) is 1.5-3mm, and the groove width of the second limiting groove (8) is 1.5-3mm, and the slope of the second limiting groove (8) is 120°.

4. The double safety anti-falling coal pick mounting structure according to claim 1, characterized in that: The circlip (10) is in a wave type, and the circlip (10) is made of a material including but not limited to Ni-Ti memory alloy, the clamp (11) is in a wedge-shaped boss shape, and the clamp (11) is made of a material including but not limited to titanium alloy.

5. The double safety anti-drop coal pick mounting structure according to claim 1, characterized in that: The groove shape of the first limiting groove (7) is the same as the shape of the circlip (10), and the first limiting groove (7) and the circlip (10) constitute a buckling structure, the groove shape of the second limiting groove (8) is the same as the shape of the clamp (11), and the second limiting groove (8) and the clamp (11) constitute a buckling structure.

6. The double safety anti-drop coal pick mounting structure according to claim 1, characterized in that: The outer diameter surface of the base (9) is provided with a spiral stress groove, the inside of the spiral stress groove is filled with a low-melting-point alloy, and the low-melting-point alloy is made of a material including but not limited to Bi58Sn42.

7. The double safety anti-drop coal pick mounting structure according to claim 1, characterized in that: The outer surface of the base (9) is laser cladded with a 0.3mm tungsten carbide wear-resistant layer, and the alloy ball (5) is made of a spherical body including but not limited to YG6 hard alloy and YG6x hard alloy.

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