An electric pickaxe with a double-link structure

Abstract

This utility model provides an electric pick with a double-link structure, including a cylinder liner, a chuck body, a gearbox, and a motor. A main cylinder is housed within the cylinder liner, and a pick drill bit is inserted into the chuck body and fixed by a chuck sleeve assembly. An impact rod and a hammer are sequentially arranged within the main cylinder, with one end of the pick drill bit extending into the impact rod. A double-link structure is also provided between the main cylinder and the gearbox, and this double-link structure is connected to a secondary cylinder within the gearbox. The output shaft of the motor meshes with the double-link structure, driving the double-link structure to perform eccentric rotation, causing the double-link structure to alternately compress air into the main cylinder and the secondary cylinder. This electric pick, through the design of the double-link structure, enables the double-link to perform eccentric rotational motion, allowing the main link to undertake the primary crushing work, improving the crushing efficiency of the electric pick, while the secondary link plays a role in mitigating machine vibration and assisting in crushing, reducing vibration during the operation of the electric pick.

Description

Technical Field

[0001] This utility model relates to the field of electric picks, specifically to an electric pick with a double-link structure. Background Technology

[0002] Electric picks, as a commonly used breaking tool, are widely used in construction, mining, road maintenance, and other fields. Traditional electric picks mostly adopt a single-link structure, which often suffers from problems such as large vibrations and low energy transfer efficiency during operation, affecting the operator's experience and work efficiency. To improve this situation, a novel double-link structure electric pick design is proposed, aiming to improve the working performance and user comfort of the electric pick by optimizing the structural layout and energy distribution. Utility Model Content

[0003] The purpose of this invention is to provide an electric pick with a double-link structure to solve the problems of large vibration and low energy transfer efficiency in the operation of existing electric picks, which reduce the working performance and user comfort of the electric pick.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] An electric pickaxe with a double-link structure includes a cylinder liner. One end of the cylinder liner has a chuck body, and the other end has a gearbox. A motor is located below the gearbox. A main cylinder is housed inside the cylinder liner. A pickaxe bit passes through the chuck body and is fixed by a chuck sleeve assembly. An impact rod and a hammer are sequentially arranged inside the main cylinder, with one end of the pickaxe bit extending into the impact rod. The impact rod and hammer abut against each other. A double-link structure is also provided between the main cylinder and the gearbox. The double-link structure is also connected to a secondary cylinder inside the gearbox. The output shaft of the motor meshes with the double-link structure, driving the double-link structure to rotate, causing the double-link structure to alternately circulate compressed air into the main cylinder and the secondary cylinder. An oil cap assembly is also provided on the gearbox.

[0006] Preferably, the aforementioned double-link structure includes an eccentric rocker shaft, a main connecting rod, and a secondary connecting rod. The eccentric rocker shaft includes a main shaft connected to a gearbox via bearings, and a large gear meshing with the output shaft of a motor is mounted on the main shaft. The upper end of the main shaft extends to form a rotary table, and a connecting shaft is mounted on the rotary table, with the end furthest from the connecting shaft being eccentrically circular. The main connecting rod and the secondary connecting rod are sequentially mounted on the connecting shaft, with the secondary connecting rod positioned above the main connecting rod. The other end of the main connecting rod is connected to a main piston via a main piston pin, and the main piston moves back and forth within the main cylinder along the direction of the impact hammer. The other end of the secondary connecting rod is connected to a secondary piston via a secondary piston pin, and the secondary piston moves back and forth within the secondary cylinder.

[0007] Preferably, a main piston ring is provided between the main piston and the main cylinder, and a secondary piston ring is provided between the secondary piston and the secondary cylinder.

[0008] Preferably, an intermediate cover is provided between the gearbox and the motor, the lower end of the eccentric rocker shaft is connected to the intermediate cover by a bearing, and the output shaft of the motor is connected to the intermediate cover by a bearing.

[0009] Preferably, the gearbox described above is also provided with an observation hole, which is located above the eccentric rocker arm shaft, and a cover is provided at the observation hole.

[0010] The present invention has the following beneficial effects: The electric pick of the present invention has a simple structure. Through the design of the double connecting rod structure, the double connecting rods perform eccentric rotational motion, so that the main connecting rod undertakes the main crushing work (90% of the work), thereby improving the crushing efficiency of the electric pick. The auxiliary connecting rod plays the role of relieving machine vibration and assisting crushing (10% of the work), thereby reducing the vibration of the electric pick during operation, improving the operator's comfort and the durability of the electric pick. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of the connecting shaft on the eccentric rocker arm shaft in this utility model when it rotates toward the main cylinder.

[0013] Figure 3 This is a schematic diagram of the structure of the connecting shaft on the eccentric rocker arm shaft in this utility model when it rotates toward the auxiliary cylinder;

[0014] Figure 4 This is a schematic diagram of the double-link structure in this utility model.

[0015] In the diagram: 1-Cylinder liner; 2-Chuck body; 3-Gearbox; 4-Motor; 5-Main cylinder; 6-Horn; 7-Impact rod; 8-Hammer; 9-Auxiliary cylinder; 10-Output shaft; 11-Eccentric rocker arm shaft; 12-Main connecting rod; 13-Auxiliary connecting rod; 14-Large gear; 15-Main piston pin; 16-Main piston; 17-Auxiliary piston pin; 18-Auxiliary piston; 19-Main piston ring; 20-Auxiliary piston ring; 21-Intermediate cover; 22-Cover; 1101-Main shaft; 1102-Rotating table; 1103-Connecting shaft. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0017] like Figure 1-4 As shown, an electric pickaxe with a double-link structure includes a cylinder liner 1, a chuck body 2 at one end of the cylinder liner 1, and a gearbox 3 at the other end. A motor 4 is located below the gearbox 3. A main cylinder 5 is housed inside the cylinder liner 1. A pickaxe 6 passes through the chuck body 2 and is fixed by a chuck assembly. An impact rod 7 and a hammer 8 are sequentially arranged inside the main cylinder 5, with one end of the pickaxe 6 extending into the impact rod 7. The impact rod 7 and the hammer 8 abut against each other. A double-link structure is also provided between the main cylinder 5 and the gearbox 3. The double-link structure is also connected to a secondary cylinder 9 inside the gearbox 3. The output shaft 10 of the motor 4 is meshed with the double-link structure, and the motor 4 drives the double-link structure to rotate, causing the double-link structure to alternately circulate compressed air into the main cylinder 5 and the secondary cylinder 9. An oil cap assembly is also provided on the gearbox 3. The double-link structure includes an eccentric rocker arm. Shaft 11, main connecting rod 12 and auxiliary connecting rod 13. The eccentric rocker shaft 11 includes a main shaft 1101, which is connected to the gearbox 3 via bearings. A large gear 14 that meshes with the output shaft 10 of the motor 4 is sleeved on the main shaft 1101. The upper end of the main shaft 1101 extends to form a rotary table 1102. A connecting shaft 1103 is provided on the rotary table 1102, and the end away from the connecting shaft 1103 is eccentrically circular. The main connecting rod 12 and the auxiliary connecting rod 13 are sequentially sleeved on the connecting shaft 1103, and the auxiliary connecting rod 13 is located above the main connecting rod 12. The other end of the main connecting rod 12 is connected to the main piston 16 via the main piston pin 15, and the main piston 16 moves back and forth in the direction of the hammer 8 within the main cylinder 5. The other end of the auxiliary connecting rod 13 is connected to the auxiliary piston 18 via the auxiliary piston pin 17, and the auxiliary piston 18 moves back and forth within the auxiliary cylinder 9.

[0018] During operation, the motor 4 is started, and the output shaft 10 of the motor 4 drives the large gear 14 to rotate. Since the large gear 14 is interference-fitted with the eccentric rocker shaft 11, the large gear 14 will drive the eccentric rocker shaft 11 to rotate. When the connecting shaft 1103 on the eccentric rocker shaft 11 rotates in the direction of the main cylinder 5, it will drive the main connecting rod 12 to move forward, causing the main piston 16 on the main connecting rod 12 to compress into the main cylinder 5, thereby causing the hammer 8, impact rod 7, and pick 6 to move forward together and start to generate impact force. When the connecting shaft 1103 on the eccentric rocker shaft 11 rotates in the direction of the auxiliary cylinder 9, it will drive the auxiliary connecting rod 13 to move forward, causing the auxiliary piston 18 to compress air into the auxiliary cylinder 9, thereby counteracting part of the rebound force, and thus rotating.

[0019] The electric pick of this utility model has a simple structure. Through the design of the double connecting rod structure, the double connecting rods perform eccentric rotational motion, so that the main connecting rod 12 undertakes the main crushing work (90% of the work), improving the crushing efficiency of the electric pick, while the auxiliary connecting rod 13 plays the role of relieving machine vibration and assisting crushing (10% of the work), reducing the vibration when the electric pick is working, improving the operator's comfort and the durability of the electric pick.

[0020] Furthermore, a main piston ring 19 is provided between the main piston 16 and the main cylinder 5, and a secondary piston ring 20 is provided between the secondary piston 18 and the secondary cylinder 9. This design improves the movement stability of the main piston 16 and the secondary piston 18, enhances compression efficiency, and thus improves the crushing efficiency and vibration damping effect of the electric hammer.

[0021] Furthermore, an intermediate cover 21 is provided between the gearbox 3 and the motor 4. The lower end of the eccentric rocker arm shaft 11 is connected to the intermediate cover 21 through a bearing, and the output shaft 10 of the motor 4 is also connected to the intermediate cover 21 through a bearing. This design improves the overall structural compactness and aesthetics of the electric hammer, thereby enhancing the product's operational stability.

[0022] Furthermore, the gearbox 3 is also provided with an observation hole, which is located above the eccentric rocker arm shaft 11, and a cover 22 is provided at the observation hole. The above design facilitates observation of the operation of the double-link structure and facilitates maintenance operations. At the same time, the product model, usage precautions, and other markings can also be set on the cover 22.

[0023] It should be noted that: the chuck sleeve assembly, oil cap assembly, etc. are conventional designs. For example, the chuck sleeve assembly includes the chuck sleeve, stop block, spring, multiple elastic steel balls and other accessories, which facilitates the replacement of the pickaxe 6; the oil cap assembly includes the oil filling hole, sealing plug, oil cap and other accessories, which facilitates oil filling and prevents oil leakage; the oil retaining ring and rubber gasket between the impact rod 7 and the main cylinder 5 and the cylinder liner 1, as well as the O-ring between the hammer 8 and the main cylinder 5, are all existing conventional designs and will not be described in detail here.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electric pickaxe equipped with a double-linkage structure, characterized in that: The system includes a cylinder liner, with a chuck body at one end and a gearbox at the other end. A motor is located below the gearbox. A main cylinder is housed inside the cylinder liner. A pick drill is inserted into the chuck body and fixed by a chuck sleeve assembly. An impact rod and a hammer are sequentially arranged inside the main cylinder, with one end of the pick drill extending into the impact rod. The impact rod and hammer abut against each other. A double-link structure is also provided between the main cylinder and the gearbox. The double-link structure is also connected to a secondary cylinder inside the gearbox. The output shaft of the motor is meshed with the double-link structure, and the motor drives the double-link structure to rotate eccentrically, causing the double-link structure to alternately circulate compressed air into the main cylinder and the secondary cylinder. An oil cap assembly is also provided on the gearbox.

2. The electric pickaxe with a double-link structure according to claim 1, characterized in that: The double-link structure includes an eccentric rocker arm shaft, a main connecting rod, and a secondary connecting rod. The eccentric rocker arm shaft includes a main shaft, which is connected to a gearbox via bearings. A large gear that meshes with the output shaft of a motor is mounted on the main shaft. The upper end of the main shaft extends to form a rotary table, on which a connecting shaft is mounted. The end of the connecting shaft away from the connecting shaft is eccentrically circular. The main connecting rod and the secondary connecting rod are sequentially mounted on the connecting shaft, with the secondary connecting rod positioned above the main connecting rod. The other end of the main connecting rod is connected to a main piston via a main piston pin, and the main piston moves back and forth within the main cylinder along the direction of the impact hammer. The other end of the secondary connecting rod is connected to a secondary piston via a secondary piston pin, and the secondary piston moves back and forth within the secondary cylinder.

3. An electric pickaxe with a double-link structure according to claim 2, characterized in that: A main piston ring is provided between the main piston and the main cylinder, and a secondary piston ring is provided between the secondary piston and the secondary cylinder.

4. An electric pickaxe with a double-link structure according to claim 3, characterized in that: An intermediate cover is provided between the gearbox and the motor. The lower end of the eccentric rocker arm shaft is connected to the intermediate cover through a bearing, and the motor output shaft is connected to the intermediate cover through a bearing.

5. An electric pickaxe with a double-link structure according to claim 4, characterized in that: The gearbox is also provided with an observation hole, which is located above the eccentric rocker arm shaft, and a cover is provided at the observation hole.

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