CN219570085U - Novel anti-loosening structure applicable to severe working conditions for working arm of heading machine - Google Patents

Abstract

The utility model relates to the technical field of heading machines, and particularly discloses a novel anti-loosening structure of a working arm of a heading machine, which is applicable to severe working conditions, and comprises a working arm body and a fastening anti-loosening structure device, wherein one end of a main shaft penetrates through the middle part of the working arm body and is provided with an arm body assembly at the periphery, a sealing frame is arranged on the side edge of the arm body assembly, one end of the main shaft is provided with the fastening anti-loosening structure device, the fastening anti-loosening structure device comprises a left-hand round nut, a right-hand round nut and a stop washer, and the left-hand round nut and the right-hand round nut are arranged on one side of the main shaft and are mutually attached; stop washers for reinforcement are respectively arranged on the left-handed round nut and the right-handed round nut; according to the novel anti-loosening form of the working arm of the heading machine, through the mutual braking of the left-handed round nuts and the right-handed round nuts and the fastening function of the stop washers, the performance of bearing load impact and vibration is stronger, and the novel anti-loosening form is more suitable for severe working conditions.

Description

Novel anti-loosening structure applicable to severe working conditions for working arm of heading machine

Technical Field

The utility model relates to the technical field of heading machines, in particular to a novel anti-loosening structure of a working arm of a heading machine, which is suitable for severe working conditions.

Background

The heading machine is a common coal mining machine, and in the coal mining process, the better the load impact and vibration performance of the working arm in the cutting part is, the wider the applicable range of the whole machine is, and the frequency of faults can be reduced. When the heading machine is used for positioning and cutting, severe working conditions such as hard rock are met, the tightening nut can have a loosening trend under the conditions that the cutting part is impacted and vibrated relatively greatly, and the loosening of the tightening nut can be accelerated along with the increase of the hardness of the rock. How to improve the reliability of the fastening nut, which directly determines the tolerance of the cutting part and influences the cutting performance of the whole machine. How to improve the load capacity of a working arm, firstly, considering the loosening of a fastening nut caused by external factors such as impact, vibration and the like, the fastening nut is a common fastener used in industry.

The cutting part is loose-proof, which is fastened by a stop washer after being screwed by two left-hand nuts, and belongs to the third-party force loose-proof. Obviously, the whole structure is characterized in that a stop washer is additionally arranged outside the working surfaces of the fastener and the fastening nut to serve as a third force, the locking force provided by the stop washer is limited, the impact load of a bolt under severe working conditions is difficult to resist, along with the accumulation of loosening degree, the round nut further abuts against the round nut retainer ring, the gap is increased, the sealing effect is likely to be influenced, the cutting performance of the whole machine is affected, the situation is also frequently generated in actual working, and the anti-loosening effect of the fastening nut is very important.

Disclosure of Invention

The utility model aims to provide a novel anti-loosening structure of a working arm of a heading machine, which is suitable for severe working conditions, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the novel anti-loosening structure for the working arm of the heading machine suitable for severe working conditions comprises a working arm body and a fastening anti-loosening structure device, wherein the working arm body comprises a main shaft, a sealing frame, a sealing seat, a bearing, a spline housing, an arm body assembly and a floating seal; the main shaft one end run through in work arm body middle part and be equipped with the arm body subassembly in the periphery, arm body subassembly side is equipped with the seal frame, the main shaft other end contact air and set up fastening locking structure device on, fastening locking structure device includes left-hand round nut, right-hand round nut, stop washer, left-hand round nut with right-hand round nut all sets up in main shaft one side to laminating each other and alignment setting are on same horizontal line, left-hand round nut with be equipped with the stop washer that is used for the reinforcement on the right-hand round nut respectively.

Preferably, the sealing frame is fastened at the side end of the working arm body and is tightly connected with the arm body assembly through the sealing seat, a bearing for supporting the main shaft is arranged in a separation layer formed between the outer wall of the main shaft and the arm body assembly, floating sealing is arranged in a gap formed between the side edge of the sealing seat and the sealing frame, and the arranged bearing can strengthen and fix the whole device to ensure the stability of the device.

Preferably, one end of the main shaft, which is opposite to the fastening anti-loosening structure device, is provided with an external spline structure and is sleeved with a spline sleeve provided with an internal spline, so as to limit the main shaft.

Preferably, the left-handed round nut and the right-handed round nut are arranged on the side edge of the sealing frame and are in a vertical structure with the main shaft so that the sealing effect of the working arm is better.

Preferably, the outer walls of the left-handed round nut and the right-handed round nut are both provided with a coarse structure, the left-handed round nut and the right-handed round nut are screwed and fixed on the axial direction through threaded holes formed in the main shaft, and friction force between the left-handed round nut and the right-handed round nut is enhanced by the coarse structure and the stop washer.

Compared with the prior art, the utility model has the beneficial effects that: according to the novel working arm provided by the utility model, under the condition of impact load, the loosening direction of the right-hand nut is the tightening direction of the right-hand nut, and when the right-hand nut is loosened, the friction surface drives the left-hand nut to tighten, so that the right-hand nut cannot loosen, and in order to adapt to severe working conditions to a greater extent, the right-hand nut is tightened by the stop washer, so that the structure is in an axial locking state, the integral structure is more reliable, and therefore, the load impact and vibration bearing performance is stronger, and the novel working arm is applicable to severe working conditions to a greater extent.

Drawings

FIG. 1 is a schematic view of a work arm according to the present utility model;

FIG. 2 is a schematic view of a fastening and anti-loosening structure device according to the present utility model;

reference numerals in the drawings: 1. a main shaft; 2. a sealing frame; 3. a sealing seat; 4. a bearing; 5. a spline housing; 6. an arm assembly; 7. floating sealing; 8. a left-hand round nut; 9. a right-hand round nut; 10. and a stop washer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1-2, the present utility model provides a technical solution: the novel anti-loosening structure for the working arm of the heading machine suitable for severe working conditions comprises a working arm body and a fastening anti-loosening structure device, wherein the working arm body comprises a main shaft 1, a sealing frame 2, a sealing seat 3, a bearing 4, a spline housing 5, an arm body assembly 6 and a floating seal 7; the main shaft 1 one end run through in work arm body middle part and be equipped with arm body subassembly 6 in the periphery, arm body subassembly 6 side is equipped with sealing frame 2, main shaft 1 other end contact air and set up fastening locking structure device on, fastening locking structure device includes left-hand round nut 8, right-hand round nut 9, stop washer 10, left-hand round nut 8 with right-hand round nut 9 all sets up in main shaft 1 one side to laminating each other and alignment setting are on same horizontal line, left-hand round nut 8 with be equipped with the stop washer 10 that is used for reinforcing on the right-hand round nut 9 respectively.

Further, the sealing frame 2 is fastened at the side end of the working arm body and is tightly connected with the arm body assembly 6 through the sealing seat 3, a bearing 4 for supporting the main shaft 1 is arranged in an interlayer formed between the outer wall of the main shaft 1 and the arm body assembly 6, and a floating seal 7 is arranged in a gap formed between the side edge of the sealing seat 3 and the sealing frame 2.

Furthermore, one end of the main shaft 1 far away from the fastening anti-loose device is provided with an external spline structure, and the outer wall of the main shaft 1 is also sleeved with a spline housing 5 which is matched with the main shaft and provided with an internal spline.

Further, the left-handed round nut 8 and the right-handed round nut 9 are both disposed at the side of the sealing frame 2, and a vertical structure is formed between the left-handed round nut and the main shaft 1.

Further, the outer walls of the left-handed round nut 8 and the right-handed round nut 9 are both in a rough state, and are screwed and fixed on the axial direction of the main shaft 1 through threaded holes formed in the main shaft 1.

Working principle: when the novel anti-loosening form of the working arm of the heading machine is used, the left-hand round nut 8 and the right-hand round nut 9 are respectively provided with one piece and are screwed up in the axial direction of the main shaft 1, and the right-hand round nut 9 has a loosening trend under the condition of impact load, but as the loosening direction of the left-hand round nut 8 is the locking direction of the right-hand round nut 9, when the right-hand round nut 9 is loosened, the friction surface drives the left-hand round nut 8 to be screwed up, so that the right-hand round nut 9 cannot be loosened.

The stop washer 10 plays a further stop and anti-loose role, and is fastened by the stop washer 10 to enable the axial direction to be in a locking state, so that the performance of bearing load impact and vibration is stronger, and the stop washer is more suitable for severe working conditions.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. Novel anti-loosening structure of working arm of heading machine suitable for severe working conditions is characterized in that: the anti-loosening device comprises a working arm body and a fastening anti-loosening structure device, wherein the working arm body comprises a main shaft (1), a sealing frame (2), a sealing seat (3), a bearing (4), a spline housing (5), an arm body assembly (6) and a floating seal (7); one end of the main shaft (1) penetrates through the middle of the working arm body and is provided with an arm body assembly (6) at the periphery, a sealing frame (2) is arranged on the side edge of the arm body assembly (6), and the other end of the main shaft (1) is in contact with air and is provided with a fastening anti-loosening structure device; the fastening anti-loosening structure device comprises a left-handed round nut (8), a right-handed round nut (9) and a stop washer (10), wherein the left-handed round nut (8) and the right-handed round nut (9) are arranged on one side of a main shaft (1) and are mutually attached and aligned on the same horizontal line, and the left-handed round nut (8) and the right-handed round nut (9) are respectively provided with the stop washer (10) for reinforcing.

2. The novel anti-loosening structure for the working arm of the heading machine, which is applicable to severe working conditions, is characterized in that: the sealing frame (2) is fastened at the side end of the working arm body and is tightly connected with the arm body assembly (6) through the sealing seat (3), a bearing (4) for supporting the main shaft (1) is arranged in an interlayer formed between the outer wall of the main shaft (1) and the arm body assembly (6), and a floating seal (7) is arranged in a gap formed between the side edge of the sealing seat (3) and the sealing frame (2).

3. The novel anti-loosening structure for the working arm of the heading machine, which is applicable to severe working conditions, is characterized in that: one end of the main shaft (1) back to the fastening anti-loose structure device is of an external spline structure and is sleeved with the main shaft through a spline sleeve (5) provided with an internal spline.

4. The novel anti-loosening structure for the working arm of the heading machine, which is applicable to severe working conditions, is characterized in that: the left-handed round nut (8) and the right-handed round nut (9) are arranged on the side edge of the sealing frame (2) and are in a vertical structure with the main shaft (1).

5. The novel anti-loosening structure for the working arm of the heading machine, which is applicable to severe working conditions, is characterized in that: the outer walls of the left-handed round nut (8) and the right-handed round nut (9) are both arranged to be of a rough structure, and are screwed and fastened in the axial direction of the main shaft (1) through threaded holes formed in the main shaft (1).