Auxiliary supporting device of cantilever type cutting part

Abstract

The utility model relates to an auxiliary supporting device of a cantilever type cutting part, and belongs to the technical field of auxiliary equipment of coal mining machines. Comprising supporting legs and a supporting seat, the supporting legs and the supporting seat are integrally formed, the supporting legs are used for being connected with a cutting part, and the bottom of the supporting seat is arc-shaped. And the cutting part and the traction part are respectively connected through a rotary pin shaft and an oil cylinder. The arc center of the arc coincides with the axis of the rotary pin shaft. And when the oil cylinder controls the cutting part to move, the cutting part rotates by taking the rotary pin shaft as a fulcrum, the supporting seat is always in contact with the ground in the moving process of the cutting part, and the supporting seat provides support for the cutting part. The stable operation of the cutting part is ensured when the height is adjusted under the driving of the oil cylinder, and meanwhile, the stress of the rotary pin shaft is reduced, so that the efficiency and the safety of coal mining work are improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary supporting device for a cantilever type cutting part, belonging to the technical field of auxiliary equipment for coal mining machines. Background Art

[0002] The cutting section of a coal shearer is a key component, responsible for cutting and crushing the coal seam. The cutting section's cutting height directly impacts mining efficiency, making precise control of this height crucial. Existing shearers typically connect the cutting section and the traction section via a rotary pin and a hydraulic cylinder, which provides power and adjusts the cutting section's height.

[0003] However, existing shearers have certain stability issues when adjusting the cutting height of the cutting section. This is primarily due to two factors: first, the high impact of the hydraulic cylinder movement can cause severe vibration in the cutting section; second, the heavy weight of the cutting section can lead to uneven force on the slewing pin, which can easily cause deflection and wear. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model is designed with a support seat, the bottom of the support seat is arc-shaped, and the center of the arc coincides with the axis of the swivel pin shaft. Therefore, during the rotation of the cutting part, the support device is always in contact with the ground and provides stable support to maintain the overall balance, ensuring the stable operation of the cutting part when adjusting the height under the drive of the oil cylinder, and at the same time reducing the force on the swivel pin shaft, thereby improving the efficiency and safety of coal mining.

[0005] The technical solution adopted by the utility model is an auxiliary support device for a cantilever cutting part, comprising a support leg and a support seat, the support leg and the support seat are integrally formed, the support leg is used to connect with the cutting part, and the bottom of the support seat is arc-shaped.

[0006] Furthermore, the cutting part and the traction part are connected via a rotary pin and an oil cylinder respectively.

[0007] Furthermore, the center of the arc coincides with the axis of the rotary pin.

[0008] Furthermore, when the oil cylinder controls the movement of the cutting part, the cutting part rotates with the rotary pin shaft as a fulcrum, and the support seat is always in contact with the ground during the movement of the cutting part, and the support seat provides support for the cutting part.

[0009] Furthermore, the side wall of the support leg is in contact with the cutting portion.

[0010] Furthermore, the support legs are connected to the cutting portion via a bolt assembly.

[0011] Furthermore, a washer is provided between the supporting leg and the cutting portion.

[0012] The present invention discloses an auxiliary support device for a cantilevered cutting unit. Compared to the prior art, the arc-shaped design of the support base and the coincidence of its arc center with the axis of the slewing pin allow the cutting unit to rotate with the slewing pin as the fulcrum when the oil cylinder controls the up and down movement of the cutting unit. This ensures that the support base remains in contact with the ground during the movement of the cutting unit, providing stable support for the cutting unit. This effectively eliminates the instability of the cutting unit during rotation and reduces deflection and wear caused by uneven force on the slewing pin, thereby improving the overall stability of the coal mining machine and ensuring efficient and safe coal mining operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0014] Figure 1 Shown is a schematic structural diagram of the auxiliary support device of the utility model;

[0015] Figure 2 Shown is a schematic front view of embodiment 1 of the present utility model;

[0016] Figure 3 Shown is a top view schematic diagram of embodiment 1 of the present utility model;

[0017] Figure 4 Shown is a schematic diagram of the auxiliary support device of the present invention.

[0018] As shown in the figure: 1. Support leg; 2. Support seat; 3. Cutting part; 4. Pulling part; 5. Rotating pin; 6. Ground; 7. Bottom; 8. Washer; 9. Screw hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] In order to further understand the content of the utility model, this technical solution is further explained below in conjunction with specific implementation methods.

[0021] Example 1: Figures 1 to 4 As shown, this embodiment provides an auxiliary support device for a cantilevered cutting section, comprising a support leg 1 and a support base 2. The support leg 1 and support base 2 are integrally formed. The support leg 1 is used to connect the support base 2 to the cutting section 3. Specifically, the side wall of the support leg 1 contacts the side wall of the cutting section 3. A washer 8 is provided between the support leg 1 and the cutting section 3. The support leg 1 and the cutting section 3 are each provided with screw holes 9 for the passage of a bolt assembly. The bolts in the bolt assembly pass through the cutting section 3, the washer 8, and the support leg 1 in sequence before being tightened with a nut. One end of the cutting section 3 is connected to the traction section 4 on both sides via a rotary pin 5 and a cylinder, respectively. The cylinder is used to adjust the coal mining height of the cutting section 3.

[0022] The bottom 7 of the support base 2 is arc-shaped, specifically, the center of the arc coincides with the axis of the pivot pin 5. When the hydraulic cylinder controls the movement of the cutting unit 3, the cutting unit 3 rotates around the pivot pin 5, driving the cutting unit 3 up or down to change the coal mining height. The support base 2 remains in contact with the ground 6 during movement, providing support for the cutting unit 3. This configuration eliminates potential instability during the rotation of the cutting unit 3.

[0023] The support base 2 provides continuous support by maintaining continuous contact with the ground 6. By applying the present invention to the cutting section 3 and the traction section 4, not only is the instability of the cutting section 3 during rotation effectively eliminated, but the deflection and wear caused by uneven force on the slewing pin 5 are also reduced, thereby improving the overall stability of the coal mining machine and ensuring efficient and safe coal mining.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An auxiliary support device for a cantilever cutting part, characterized in that: The invention comprises a support leg (1) and a support seat (2), wherein the support leg (1) and the support seat (2) are integrally formed, the support leg (1) is used to connect with the cutting part (3), the bottom (7) of the support seat (2) is arc-shaped, the cutting part (3) and the traction part (4) are connected respectively via a rotary pin (5) and an oil cylinder, and the arc center coincides with the axis center of the rotary pin (5).

2. The auxiliary support device of the cantilever cutting part according to claim 1, characterized in that: When the oil cylinder controls the cutting part (3) to move, the cutting part (3) rotates with the rotary pin shaft (5) as a fulcrum, and the support seat (2) is always in contact with the ground (6) during the movement of the cutting part (3), and the support seat (2) provides support for the cutting part (3).

3. The auxiliary support device of the cantilever cutting part according to claim 1, characterized in that: The side wall of the supporting leg (1) is in contact with the cutting portion (3).

4. The auxiliary support device of the cantilever cutting part according to any one of claims 1 or 3, characterized in that: The supporting leg (1) and the cutting portion (3) are connected via a bolt assembly.

5. The auxiliary support device of the cantilever cutting part according to claim 4, characterized in that: A washer (8) is also provided between the supporting leg (1) and the cutting portion (3).

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