Structure capable of preventing front barrel and screw of electric pick from being broken

Abstract

The structure capable of preventing the front barrel and the screw of the electric pick from being broken comprises the front barrel, a drill bushing body and an impact rod and further comprises a damping structure, the damping structure comprises an opening sleeve, an impact guide sleeve, an impact gasket and a rubber gasket, the impact guide sleeve and an air cylinder are sequentially arranged on the inner wall of the front barrel in a sleeved mode, and the impact rod is arranged in the impact guide sleeve in a penetrating mode. The outer wall of the impact rod is sleeved with the impact gasket, the outer wall of the impact guide sleeve is sleeved with the rubber gasket, the inner wall of the drill sleeve body is sleeved with the opening sleeve, one side face of the impact gasket abuts against the opening sleeve, the other side face of the impact gasket abuts against the rubber gasket, the front cylinder and the drill sleeve body are connected through a screw, and a pickaxe drill rod is connected into the front cylinder and the impact rod in a penetrating mode. The shock absorption mechanism is additionally arranged among the front barrel, the drill bushing body and the impact rod, and redundant impact force of the impact rod is mostly eliminated before the impact rod is in contact with the drill bushing body, so that the situation that a screw and the front barrel are not broken can be effectively avoided, the service life of the whole electric pick is prolonged, and the use cost of a product is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge field, concretely relates to a structure of preventing the front cylinder and screw of electric grab from breaking. BACKGROUND

[0002] Common electric grab is generally used for concrete crushing, chiseling, excavating, cutting, and assembling pipeline, laying cable, mechanical installation, water supply and drainage facilities, interior decoration, other civil engineering construction. When working, the inside hammer repeatedly hits the impact rod, and the impact rod often hits the drill sleeve body with great force, and the drill sleeve body transmits the force to the screw and the front cylinder. Then, in the existing electric grab product, because the drill sleeve body and the front cylinder do not have any mechanism to prevent the impact rod from directly hitting the drill sleeve body, the impact force will directly act on the front cylinder and the screw, so that the front cylinder and the screw are prone to breaking, thereby affecting the service life of the electric grab machine and increasing the use cost of the product. SUMMARY

[0003] The utility model discloses a structure of preventing the front cylinder and screw of electric grab from breaking, to solve the problem that the electric grab in the prior art is prone to breaking the front cylinder and screw due to the impact of the impact rod, affecting the service life of the electric grab machine and increasing the use cost.

[0004] In order to solve the above technical problem, the utility model realizes the following technical scheme:

[0005] A structure of preventing the front cylinder and screw of electric grab from breaking, comprising a front cylinder, a drill sleeve body and an impact rod, further comprising a damping structure, the damping structure comprising an open sleeve, an impact guide sleeve, an impact washer and a rubber washer, the inner wall of the front cylinder is sequentially sleeved with the impact guide sleeve and the air cylinder, the impact rod is arranged in the impact guide sleeve, the impact washer is sleeved on the outer wall of the impact rod, the rubber washer is sleeved on the outer wall of the impact guide sleeve, the open sleeve is sleeved on the inner wall of the drill sleeve body, one side of the impact washer is tightly abutted with the open sleeve, and the other side is tightly abutted with the rubber washer, the front cylinder and the drill sleeve body are connected through the screw, and the pickaxe drill is arranged in the front cylinder and the impact rod.

[0006] As a preferred, the impact rod comprises an integrally formed rod body, a boss and a mounting groove, the impact washer and the impact guide sleeve are sequentially sleeved on the outer wall of the rod body, and one side of the impact washer is tightly abutted with the inner side of the boss, and one end of the pickaxe drill is arranged in the mounting groove.

[0007] As a preferred, one end of the impact guide sleeve is formed with a mounting table, the rubber washer is sleeved on the mounting table, and one end protrudes from the mounting table and is tightly abutted with the impact washer, so that a gap is formed between the end of the mounting table and the impact washer.

[0008] As preferred, at least one groove is formed on the outer wall and the inner wall of the impact guide sleeve.

[0009] The utility model has the advantages that: the utility model increases the damping mechanism between the front cylinder, the drill sleeve body and the impact rod, most of the excessive impact force of the impact rod is eliminated before the impact rod contacts the drill sleeve body, so that the drill sleeve body and the front cylinder are protected, the three main components of the front cylinder, the screw and the impact rod can effectively avoid the breakage of the screw and the front cylinder, improve the service life of the electric grab whole machine and reduce the use cost of the product. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is a cross-sectional structure schematic view of the utility model;

[0011] Fig. 2 It is a structure schematic view of the impact guide sleeve in the utility model;

[0012] Fig. 3 It is a structure schematic view of the impact rod in the utility model.

[0013] In the drawing: 1 - grab drill rod;2 - drill sleeve body;3 - open sleeve;4 - screw;5 - impact washer;6 - rubber washer;7 - impact guide sleeve;8 - front cylinder;9 - impact rod;10 - air cylinder;701 - mounting table;702 - groove;901 - rod body;902 - boss;903 - mounting groove. DETAILED DESCRIPTION

[0014] The specific embodiments of the utility model will be further described below in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0015] As Figs. 1-3 As shown in a kind of structure that can prevent the breakage of front cylinder and screw of electric grab, including front cylinder 8, drill sleeve body 2 and impact rod 9, it further include shock-absorbing structure, shock-absorbing structure includes open sleeve 3, impact guide sleeve 7, impact washer 5 and rubber washer 6, impact guide sleeve 7 and air cylinder 10 are sequentially sleeved with the inner wall of front cylinder 8, impact rod 9 is arranged in impact guide sleeve 7, impact washer 5 is sleeved on the outer wall of impact rod 9, rubber washer 6 is sleeved on the outer wall of impact guide sleeve 7, open sleeve 3 is sleeved on the inner wall of drill sleeve body 2, one side of impact washer 5 is tightly abutted with open sleeve 3, another side is tightly abutted with rubber washer 6, front cylinder 8 and drill sleeve body 2 are connected by screw 4, front cylinder 8 and impact rod 9 are connected with grab drill rod 1 by being arranged in.

[0016] When assembling, first put the open sleeve 3 into the drill sleeve body 2, and make one end of the open sleeve 3 abut against one side plane of the impact washer 5, then press the cylinder 10 and the impact guide sleeve 7 into the front cylinder 8 in sequence, then put the rubber washer 6 and the impact washer 5 in sequence, then fix and connect the drill sleeve body 2 and the front cylinder 8 by the screw 4, and finally install other parts of the electric pick (such as the pick drill 1, etc.) at the corresponding positions, so the assembly of the electric pick whole machine is completed.

[0017] Working principle: under normal working condition (load), the striker inside the electric pick repeatedly hits the impact rod 9, the impact rod 9 hits the pick drill 1 to the left, and the impact rod 9 and the pick drill 1 move a certain distance at the same time. Under this condition, the open sleeve 3 does not work, that is, the impact rod 9 does not contact the open sleeve 3; when the impact rod 9 continues to move to the direction of the pick drill 1 to the set distance (unloaded distance), it will hit the open sleeve 3 and be squeezed into the open sleeve 3, and at the same time it will be clamped by the open sleeve 3 to prevent the impact rod 9 from continuing to move to the direction of the pick drill 1. At this time, the open sleeve 3 will convert the force of the impact rod 9 to the direction of the pick drill 1 into the force of the open sleeve 3 to the four directions, that is, it converts the force to the direction of the pick drill 1 into the force perpendicular to the direction (force to the four directions), so that the force of the impact rod 9 hitting the drill sleeve body 2 is greatly reduced, and the force transmitted to the screw 4 and the front cylinder 8 is also greatly reduced, thereby protecting the screw 4 and the front cylinder 8, preventing them from being broken, prolonging the service life of the electric pick whole machine and reducing the use cost.

[0018] Further, the impact rod 9 comprises an integrally formed rod body 901, a ring-shaped boss 902 and a mounting groove 903, the impact washer 5 and the impact guide sleeve 7 are sequentially sleeved on the outer wall of the rod body 901, and the side surface of the impact washer 5 abuts tightly against the inner surface of the boss 902, one end of the pick drill 1 is arranged in the mounting groove 903, one end of the impact guide sleeve 7 is formed with a mounting table 701, the rubber washer 6 is sleeved on the mounting table 701, and one end of the rubber washer 6 protrudes from the mounting table 701 and abuts tightly against the impact washer 5, so that a gap is formed between the outer end of the mounting table 701 and the impact washer 5.

[0019] The above design facilitates the assembly of the impact rod 9, the impact washer 5, the rubber washer 6 and the impact guide sleeve 7, improves the assembly stability between the damping structure and the drill sleeve body 2 and the front cylinder 8, makes the damping effect more effective and stable, and thereby improves the use stability of the electric pick whole machine.

[0020] Further, at least one groove 702 is formed on the outer wall and the inner wall of the impact guide sleeve 7. The space formed by the groove 702 can improve the damping effect between the impact guide sleeve 7 and the front cylinder 8 and the impact rod 9, and a rubber ring or the like can be arranged in the groove 702 to improve the connection stability and damping stability.

[0021] The above merely describes preferred embodiments of the present application, and is not intended to limit the implementation and protection scope of the present application. For those skilled in the art, it should be understood that any equivalent substitutions and obvious changes made according to the content of the present application and drawings should be included in the protection scope of the present application.

Claims

1. A structure for preventing breakage of the front barrel and screws of an electric drill, comprising a front barrel, a drill sleeve body, and an impact rod, characterized in that: The shock-absorbing structure comprises an open sleeve, an impact guide sleeve, an impact washer and a rubber washer, the front cylinder inner wall is sequentially sleeved with the impact guide sleeve and the air cylinder, the impact rod is arranged in the impact guide sleeve, the impact washer is sleeved on the outer wall of the impact rod, the rubber washer is sleeved on the outer wall of the impact guide sleeve, the open sleeve is sleeved on the drill sleeve body inner wall, one side of the impact washer is tightly abutted with the open sleeve, and the other side is tightly abutted with the rubber washer, the front cylinder and the drill sleeve body are connected through the screw, and the front cylinder and the impact rod are connected through the inner penetration.

2. The structure for preventing the breakage of the front cylinder and screw of the electric excavator according to claim 1, wherein: The impact rod comprises an integrally formed rod body, a circle of bosses and a mounting groove, the impact washer and the impact guide sleeve are sequentially sleeved on the outer wall of the rod body, and one side of the impact washer is tightly abutted with the inner side of the boss, and one end of the pick rod is arranged in the mounting groove.

3. The structure for preventing the breakage of the front cylinder and screw of the electric excavator according to claim 2, wherein: One end of the impact guide sleeve is formed with a mounting table, the rubber washer is sleeved on the mounting table, and one end protrudes from the mounting table and is tightly abutted with the impact washer, so that a gap is formed between the end of the mounting table and the impact washer.

4. The structure for preventing the breakage of the front cylinder and screw of the electric excavator according to claim 3, wherein: At least one groove is formed on the outer wall and the inner wall of the impact guide sleeve.

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