Rear axle and rear rack assembly of electric carry-scraper

Abstract

The utility model discloses a rear axle and rear frame assembly of an electric carry-scraper, which comprises a rear axle and rear frame bottom plate and a rear anti-collision plate, a cooling fan is mounted on the rear anti-collision plate, a hollow column is arranged at the bottom of the cooling fan, a dustproof net is arranged at the top of the cooling fan, an insertion column is fixed at the bottom of the dustproof net, and the insertion column is fixed on the rear frame bottom plate. A supporting rod is slidably connected into the inserting column, limiting grooves are formed in the two sides of the inserting column, balls are arranged in the limiting grooves, and a slender rod is arranged at the bottom of the supporting rod. When the supporting rod ascends, the thin rod drives the vertical rod and the pressing plate to ascend, when the spring resets, the pressing plate moves downwards in the hollow bin and then extrudes air in the hollow bin to enable the air to enter the air bag from the air pipe, then the air bag expands to fill a gap between the inserting column and the hollow column, and therefore the inserting column and the hollow column are inserted into the air bag. The rough surface of the air bag can increase the friction force with the inner wall of the hollow column and improve the connection firmness.

Description

Technical Field

[0001] The utility model relates to the field of underground mining equipment, in particular to a rear axle and rear frame assembly of an electric scraper. Background Art

[0002] A scraper is a type of trackless mining equipment, widely used in mining and transportation in underground mines. The scraper includes wheels, a traction beam, a frame, a hydraulic device, a bucket with a shoveling mechanism, a support mechanism, and a frame lifting and adjustment mechanism.

[0003] The patent with application number CN218021832U was cited. By optimizing the connection between the motor and the pump, the length of the pump and motor assembly was shortened. According to the results of thermal management analysis, the length of the cooling fan shaft was shortened. By shortening these two lengths, the rear axle rear frame was re-optimized and designed, shortening the length of the rear axle rear frame and improving the passage of the scraper in the shaft. On the basis of shortening the rear axle rear frame, in order to increase the counterweight balance with the front frame, the thickness of the rear anti-collision plate was increased, which not only balanced the counterweight but also increased the strength of the vehicle body. However, the cooling fan in the comparative document lacked protective measures, resulting in dust on the fan blades, affecting its use. Utility Model Content

[0004] The utility model aims to provide a rear axle and rear frame assembly of an electric scraper in order to solve the problem.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear axle and rear frame assembly of an electric scraper, comprising a rear axle and rear frame bottom plate and a rear anti-collision plate, a cooling fan is installed on the rear anti-collision plate, a hollow column is arranged at the bottom of the cooling fan, a dustproof net is arranged at the top of the cooling fan, a plug column is fixed at the bottom of the dustproof net, a support rod is slidably connected inside the plug column, limiting grooves are arranged on both sides of the plug column, a ball is arranged in the limiting groove, a thin rod is arranged at the bottom of the support rod, a cavity is formed between the thin rod and the plug column, and a circular groove is arranged on the inner wall of the hollow column.

[0006] As a further solution of the utility model: a hollow bin is provided at the bottom of the plug column, an air bag is provided on the outer wall of the plug column, a vertical rod is fixedly provided at the bottom of the thin rod and the vertical rod is located inside the hollow bin, a pressure plate is vertically slidably connected to the inside of the hollow bin, and a spring is provided on the outside of the vertical rod.

[0007] As a further solution of the utility model: the surface of the airbag is rough.

[0008] As a further solution of the utility model: the side of the limiting groove close to the support rod is wide, and the side away from the support rod is narrow.

[0009] As a further solution of the utility model: the diameter of the widest part of the ball is larger than the narrowest part of the limiting groove.

[0010] As a further solution of the utility model: the circular groove and the ball cooperate with each other, and the ball can be pressed into the inside of the circular groove.

[0011] As a further solution of the utility model: an air tube connected to the airbag is arranged at the bottom of the hollow chamber.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Pull the handle to drive the support rod to rise and the spring is compressed. Then the support rod moves from the position of the ball. At this time, the pressure of the support rod on the ball disappears. As the support rod rises, the cavity between the thin rod and the plug column will rise to the position of the ball. Then the ball can move between the limit groove and the cavity. Then insert the plug column at the bottom of the cooling fan into the hollow column. Then release the handle and the support rod re-presses the ball under the reset action of the spring, so that one side of the ball enters the inside of the circular groove to complete the connection between the plug column and the hollow column, and then install the dust screen on the cooling fan;

[0014] 2. When the support rod is raised, the vertical rod and the pressure plate will be driven to rise through the thin rod. When the spring is reset, the pressure plate will move downward inside the hollow chamber, and then squeeze the air in the hollow chamber, so that the air enters the airbag from the trachea. Then the airbag expands to fill the gap between the plug column and the hollow column. The rough surface of the airbag can increase the friction with the inner wall of the hollow column and improve the firmness of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the rear axle rear frame assembly of the utility model;

[0016] Figure 2 It is a schematic diagram of the heat dissipation fan and dustproof net of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal structure of the hollow column and the plug column of the utility model;

[0018] Figure 4 For the utility model Figure 3 Partial picture.

[0019] In the figure: 1. rear axle rear frame bottom plate; 2. rear anti-collision plate; 3. cooling fan; 4. hollow column; 5. dust net; 6. plug column; 7. support rod; 8. pull handle; 9. limit groove; 10. ball; 11. cavity; 12. round groove; 13. hollow chamber; 14. airbag; 15. vertical rod; 16. pressure plate; 17. spring; 18. air pipe; 19. thin rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 to Figure 4 In an embodiment of the utility model, a rear axle and rear frame assembly of an electric scraper comprises a rear axle and rear frame bottom plate 1, a rear bumper plate 2, a cooling fan 3 is installed on the rear bumper plate 2, a hollow column 4 is arranged at the bottom of the cooling fan 3, a dustproof net 5 is arranged at the top of the cooling fan 3, a plug column 6 is fixed at the bottom of the dustproof net 5, a support rod 7 is slidably connected inside the plug column 6, a handle 8 is fixedly arranged at the top of the support rod 7, limiting grooves 9 are arranged on both sides of the plug column 6, a ball 10 is arranged in the limiting groove 9, a thin rod 19 is arranged at the bottom of the support rod 7, a cavity 11 is formed between the thin rod 19 and the plug column 6, a circular groove 12 is arranged on the inner wall of the hollow column 4, the limiting groove 9 is wide on the side close to the support rod 7, and narrow on the side away from the support rod 7, and the diameter of the widest part of the ball 10 is larger than the narrowest part of the limiting groove 9.

[0022] In this embodiment: pulling the handle 8 drives the support rod 7 to rise, then the spring 17 is compressed, and then the support rod 7 moves from the position of the ball 10. At this time, the pressure of the support rod 7 on the ball 10 disappears. As the support rod 7 rises, the cavity 11 between the thin rod 19 and the plug post 6 will rise to the position of the ball 10, and then the ball 10 can move between the limiting groove 9 and the cavity 11, and then the plug post 6 at the bottom of the cooling fan 3 is inserted into the interior of the hollow column 4. When the bottom of the plug post 6 contacts the bottom of the inner cavity of the hollow column 4, the ball 10 and the circular groove 12 are at the same height. Then, the handle 8 is released and the support rod 7 re-presses the ball 10 under the resetting action of the spring 17, so that one side of the ball 10 enters the interior of the circular groove 12 to complete the connection between the plug post 6 and the hollow column 4. Since the diameter of the widest part of the ball 10 is larger than the narrowest part of the limiting groove 9, the ball 10 will not fall from the narrowest part of the limiting groove 9.

[0023] See also Figure 1 to Figure 4A hollow bin 13 is provided at the bottom of the plug column 6, an air bag 14 is provided on the outer wall of the plug column 6, a vertical rod 15 is fixedly provided at the bottom of the thin rod 19 and the vertical rod 15 is located inside the hollow bin 13, a pressure plate 16 is vertically slidably connected to the inside of the hollow bin 13, the bottom of the vertical rod 15 is fixedly connected to the top of the pressure plate 16, a spring 17 is provided on the outside of the vertical rod 15, the top of the spring 17 is fixedly connected to the top of the hollow bin 13, an air pipe 18 connected to the air bag 14 is provided at the bottom of the hollow bin 13, and the rough surface of the air bag 14 is to increase the friction with the inner wall of the hollow column 4, thereby improving the firmness of the connection between the plug column 6 and the hollow column 4.

[0024] In this embodiment: when the support rod 7 is raised, the vertical rod 15 and the pressure plate 16 will be driven to rise through the thin rod 19. When the spring 17 is reset, the pressure plate 16 will move downward inside the hollow chamber 13, and then squeeze the air in the hollow chamber 13, so that the air enters the interior of the airbag 14 from the trachea 18, and then the airbag 14 expands to fill the gap between the plug column 6 and the hollow column 4. The rough surface of the airbag 14 can increase the friction with the inner wall of the hollow column 4 and improve the firmness of the connection. The dustproof net 5 is installed on the surface of the cooling fan 3 by connecting the plug column 6 and the hollow column 4, which is beneficial to prevent dust from adhering to the fan blades and affecting normal use. When the dustproof net 5 needs to be removed for cleaning, the reverse operation can be performed.

[0025] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rear axle and rear frame assembly of an electric scraper, comprising a rear axle and rear frame bottom plate (1) and a rear anti-collision plate (2), characterized in that: The rear anti-collision plate (2) is installed with a cooling fan (3), a hollow column (4) is arranged at the bottom of the cooling fan (3), a dustproof net (5) is arranged at the top of the cooling fan (3), a plug column (6) is fixed at the bottom of the dustproof net (5), a support rod (7) is slidably connected inside the plug column (6), limiting grooves (9) are arranged on both sides of the plug column (6), a ball (10) is arranged in the limiting groove (9), a thin rod (19) is arranged at the bottom of the support rod (7), a cavity (11) is formed between the thin rod (19) and the plug column (6), and a circular groove (12) is arranged on the inner wall of the hollow column (4).

2. The rear axle and rear frame assembly of an electric scraper according to claim 1, characterized in that: A hollow bin (13) is provided at the bottom of the plug column (6), an air bag (14) is provided on the outer wall of the plug column (6), a vertical rod (15) is fixedly provided at the bottom of the thin rod (19) and the vertical rod (15) is located inside the hollow bin (13), a pressure plate (16) is vertically slidably connected inside the hollow bin (13), and a spring (17) is provided outside the vertical rod (15).

3. The rear axle and rear frame assembly of an electric scraper according to claim 2, characterized in that: The surface of the airbag (14) is rough.

4. The rear axle and rear frame assembly of an electric scraper according to claim 1, characterized in that: The limiting groove (9) is wider on a side close to the support rod (7) and narrower on a side away from the support rod (7).

5. The rear axle and rear frame assembly of an electric scraper according to claim 1, characterized in that: The diameter of the ball (10) at its widest point is larger than the diameter of the limiting groove (9) at its narrowest point.

6. The rear axle and rear frame assembly of an electric scraper according to claim 1, characterized in that: The circular groove (12) and the ball (10) cooperate with each other, and the ball (10) can be pressed into the interior of the circular groove (12).

7. The rear axle and rear frame assembly of an electric scraper according to claim 2, characterized in that: An air pipe (18) connected to the air bag (14) is arranged at the bottom of the hollow chamber (13).

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