Large lifting arm of small underground carry-scraper

Abstract

The utility model belongs to the technical field of the structural design of a lifting big arm of a carry-scraper, and particularly relates to a lifting big arm of a small underground carry-scraper, which comprises two side plates which are correspondingly arranged front and back, a front shaft sleeve is welded between the right ends of the two side plates, vane plates are welded on the outer sides of the right ends of the two side plates, and the vane plates and the front shaft sleeve are attached and welded. A middle shaft sleeve penetrating through the two side plates is welded between the middle and rear ends of the two side plates, a rear shaft sleeve penetrating through the two side plates is welded between the rear ends of the two side plates, a panel is welded between the tops of the two side plates, a bottom plate is welded between the bottoms of the two side plates, and the left ends of the panel and the bottom plate are welded with the rear shaft sleeve. The large lifting arm of the small underground carry-scraper is good in structural stability and high in supporting strength.

Description

Technical Field

[0001] The utility model relates to a lifting arm of a small underground scraper, and belongs to the technical field of structural design of the lifting arm of the scraper. Background Art

[0002] Small underground loader is a tool used for loading and short-distance transportation in underground mines. As an important structural component of small underground loader, the lifting arm plays a huge role in the work. For example, in the process of loading ore, the resistance of shoveling ore is transmitted to the loader frame through the lifting arm; in the process of short-distance ore transportation by the loader, the road surface is rough and uneven, and the load of the bucket needs to be borne by the lifting arm. Therefore, in the structural design of the lifting arm, there are high requirements for its structural stability and support strength.

[0003] The Chinese utility model patent with the authorization announcement number CN219450860U discloses a lifting arm of a large bucket capacity underground scraper, including two parallel vertical plates, a top sealing plate is vertically arranged on the upper edge of the vertical plate, a front bottom sealing plate and a rear bottom sealing plate are vertically arranged on the lower edge of the vertical plate, a front hinged steel sleeve is arranged at the front end of the vertical plate, a rear hinged steel sleeve is arranged at the rear end of the vertical plate, a middle hinged steel sleeve is arranged in the middle of the vertical plate, and a steel pipe is connected to the front end of the two vertical plates, and the two ends of the steel pipe pass through the two vertical plates, and the middle of the two vertical plates are connected by a connecting plate. The lifting arm structure in the above-mentioned prior art is relatively simple, with poor structural stability and low support strength. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a lifting arm of a small underground scraper with good structural stability and high supporting strength.

[0005] The lifting arm of the small underground scraper described in the utility model includes two side plates arranged correspondingly at the front and rear, a front shaft sleeve is welded between the right ends of the two side plates, blade plates are welded to the outer sides of the right ends of the two side plates, the blade plates and the front shaft sleeve are fitted and welded, a middle shaft sleeve running through the two side plates is welded between the middle and rear ends of the two side plates, a rear shaft sleeve running through the two side plates is welded between the rear ends of the two side plates, a panel is welded between the tops of the two side plates, a bottom plate is welded between the bottoms of the two side plates, and the left ends of the panel and the bottom plate are both welded to the rear shaft sleeve.

[0006] Preferably, a reinforcing plate is welded on the side plate, and the reinforcing plate is sleeved on the rear axle sleeve and welded to the rear axle sleeve.

[0007] Preferably, the right end of the panel is welded to the front shaft sleeve.

[0008] Preferably, a U-shaped notch is provided at the right end of the panel.

[0009] Preferably, a rib plate is welded between the blade and the panel.

[0010] Preferably, a boss portion is provided at the bottom of the right end of the side panel.

[0011] Preferably, the right end of the bottom plate is bent downward and corresponds to the boss portion.

[0012] Preferably, a front partition is welded between the two side panels.

[0013] Preferably, a rear baffle is welded between the two side plates, and the lower end of the rear baffle is welded to the middle shaft sleeve.

[0014] Preferably, the upper end of the rear partition is inclined forward.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The lifting arm of the small underground scraper described in the utility model is a box-type structure welded together, and has good structural stability; the setting of the blade can increase the contact area with the front shaft sleeve and improve the supporting strength of the front shaft sleeve; the left ends of the panel and the bottom plate are welded to the rear shaft sleeve, which can improve the supporting strength of the rear shaft sleeve; the middle shaft sleeve adopts through-type welding, and has a high supporting strength, thereby ensuring a high supporting strength of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 yes Figure 1 The main view of

[0019] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0020] Figure 4 yes Figure 2 Cross-section at the middle BB;

[0021] Figure 5 yes Figure 2 Cross-sectional view at CC.

[0022] In the figure: 1. front axle sleeve; 2. blade plate; 3. rib plate; 4. U-shaped notch; 5. panel; 6. side plate; 7. middle axle sleeve; 8. reinforcement plate; 9. rear axle sleeve; 10. rear partition; 11. bottom plate; 12. front partition; 13. boss part. DETAILED DESCRIPTION

[0023] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0024] Embodiment 1:

[0025] like Figures 1 to 5 As shown, the lifting arm of the small underground scraper described in the utility model includes two side plates 6 correspondingly arranged at the front and rear ends, a front shaft sleeve 1 is welded between the right ends of the two side plates 6, blade plates 2 are welded to the outer sides of the right ends of the two side plates 6, the blade plates 2 are fitted and welded to the front shaft sleeve 1, a middle shaft sleeve 7 penetrating the two side plates 6 is welded between the middle and rear ends, a rear shaft sleeve 9 penetrating the two side plates 6 is welded between the rear ends, a panel 5 is welded between the tops of the two side plates 6, a bottom plate 11 is welded between the bottoms of the two side plates 6, and the left ends of the panel 5 and the bottom plate 11 are both welded to the rear shaft sleeve 9.

[0026] When in use, the front axle sleeve 1 is connected to the bucket through a pin, the middle axle sleeve 7 is connected to the lifting cylinder through a pin, and the rear axle sleeve 9 is connected to the frame through a pin. During operation, the main force points are on the front axle sleeve 1, the middle axle sleeve 7 and the rear axle sleeve 9. The setting of the blade 2 can increase the contact area with the front axle sleeve 1 and improve the supporting strength of the front axle sleeve 1. The left ends of the panel 5 and the bottom plate 11 are welded to the rear axle sleeve 9, which can improve the supporting strength of the rear axle sleeve 9. The middle axle sleeve 7 adopts through-type welding, and has a high supporting strength, thereby ensuring a high supporting strength of the overall structure.

[0027] Embodiment 2:

[0028] like Figures 1 to 5 As shown, based on Example 1,

[0029] Preferably, a reinforcing plate 8 is welded on the side plate 6, and the reinforcing plate 8 is sleeved on the rear shaft sleeve 9 and welded to the rear shaft sleeve 9. The reinforcing plate 8 can further increase the supporting strength of the rear shaft sleeve 9. At the same time, the reinforcing plate 8 is processed with an arc angle to prevent stress concentration;

[0030] Preferably, the right end of the panel 5 is welded to the front shaft sleeve 1, which can further increase the structural strength of the front shaft sleeve 1 and improve the supporting capacity of the front shaft sleeve 1;

[0031] Preferably, a U-shaped notch 4 is provided at the right end of the panel 5 to facilitate the installation of the lifting arm;

[0032] Preferably, a rib plate 3 is welded between the blade 2 and the panel 5, and the rib plate 3 can increase the structural stability of the blade 2;

[0033] Preferably, a boss portion 13 is provided at the bottom of the right end of the side plate 6, and the boss portion 13 can fit with the counterweight of the frame to reduce the load of the lifting cylinder when transporting ore;

[0034] Preferably, the right end of the bottom plate 11 is bent downward and corresponds to the boss portion 13. The bent portion of the right end of the bottom plate 11 can increase the structural strength of the boss portion 13.

[0035] Preferably, a front baffle 12 is welded between the two side plates 6, and the front baffle 12 can increase the structural stability of the side plates 6;

[0036] Preferably, a rear baffle 10 is welded between the two side plates 6, and the lower end of the rear baffle 10 is welded to the middle shaft sleeve 7, and the rear baffle 10 can increase the structural strength of the middle shaft sleeve 7;

[0037] Preferably, the upper end of the rear partition 10 is tilted forward so that the direction of the rear partition 10 is the same as the main force direction of the lifting cylinder, so that the force of the middle sleeve 7 can be evenly dispersed and transmitted to the lifting arm through the rear partition 10.

[0038] It is particularly noted that in the description of the present invention, the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "up", and "down" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention rather than requiring that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A lifting arm of a small underground scraper, characterized in that: The invention comprises two side plates (6) arranged correspondingly at the front and rear ends, a front shaft sleeve (1) being welded between the right ends of the two side plates (6), blade plates (2) being welded on the outer sides of the right ends of the two side plates (6), the blade plates (2) and the front shaft sleeve (1) being attached and welded, a middle shaft sleeve (7) penetrating the two side plates (6) being welded between the middle and rear ends thereof, a rear shaft sleeve (9) penetrating the two side plates (6) being welded between the rear ends thereof, a panel (5) being welded between the tops of the two side plates (6), a bottom plate (11) being welded between the bottoms of the two side plates (6), and the left ends of the panel (5) and the bottom plate (11) being welded to the rear shaft sleeve (9).

2. The lifting arm of the small underground scraper according to claim 1 is characterized in that: A reinforcing plate (8) is welded on the side plate (6), and the reinforcing plate (8) is sleeved on the rear shaft sleeve (9) and welded to the rear shaft sleeve (9).

3. The lifting arm of the small underground scraper according to claim 1 is characterized in that: The right end of the panel (5) is welded to the front shaft sleeve (1).

4. The lifting arm of the small underground scraper according to claim 3 is characterized in that: A U-shaped notch (4) is provided at the right end of the panel (5).

5. The lifting arm of the small underground scraper according to claim 3 is characterized in that: A rib plate (3) is welded between the blade plate (2) and the panel (5).

6. The lifting arm of the small underground scraper according to claim 1, characterized in that: A boss portion (13) is provided at the bottom of the right end of the side plate (6).

7. The lifting arm of the small underground scraper according to claim 6, characterized in that: The right end of the bottom plate (11) is bent downward and corresponds to the boss portion (13).

8. The lifting arm of the small underground scraper according to claim 1, characterized in that: A front partition plate (12) is welded between the two side plates (6).

9. The lifting arm of a small underground loader according to any one of claims 1 to 8, characterized in that: A rear partition plate (10) is welded between the two side plates (6), and the lower end of the rear partition plate (10) is welded to the middle shaft sleeve (7).

10. The lifting arm of the small underground scraper according to claim 9, characterized in that: The upper end of the rear partition (10) is inclined forward.

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