Wet brake land leveler rear axle for mine operation

Abstract

The utility model discloses a wet type brake land leveler rear axle for mine operation, which comprises a first-stage speed reduction assembly, second-stage speed reduction assemblies and a third-stage speed reduction assembly, the second-stage speed reduction assemblies are arranged at the left end and the right end of the first-stage speed reduction assembly, and rotation bearing assemblies are arranged in the second-stage speed reduction assemblies. A three-stage speed reduction assembly is installed at the outer end of the balance box body, a sealing structure, a hardening adjusting sleeve, an auxiliary assembly and a friction plate are installed in the three-stage speed reduction assembly, the three-stage speed reduction assembly is connected with a tire through a connecting disc and a bolt assembly, and the three-stage speed reduction assembly, an output chain wheel, an output shaft disc, a brake sealing cover, a brake shell and a brake disc seat are connected with a motor. And the output chain wheel is in spline connection with the output shaft disc. The wet-type braking land leveler for mine operation is small in rear axle abrasion, capable of meeting the swing requirement of the balance box body, convenient to assemble and maintain, convenient to disassemble and assemble tires, low in built-in abrasion, free of maintenance, large in braking torque, long in service life, safer and more reliable.

Description

Technical Field

[0001] The utility model is used in the field of wet brake grader rear axles for mining operations, in particular to a wet brake grader rear axle for mining operations. Background Art

[0002] Graders are increasingly used in high-horsepower mining machinery operating environments. The rear axle of the old three-stage grader has a complex structure, and the special main reducer parts have poor versatility, complex processing, and difficult assembly and disassembly; the rear axle of the grader is a swing sleeve structure, which is prone to wear due to poor load-bearing, resulting in wear and oil leakage of the swing sleeve; the wheel side is positioned simultaneously by the balance box and the wheel hub, and the large coaxiality error can easily shorten the service life of the bearing; the geological conditions of the mine are complex, various types of ores are hard and sharp, the slag is trivial and difficult to deal with, there is a lot of dust, and the construction conditions are harsh. This operating environment causes serious wear on the brake system.

[0003] Therefore, we propose a wet brake grader rear axle for mining operations to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a rear axle of a wet brake grader for mining operations, so as to solve the problems proposed in the above background technology that the existing three-stage grader rear axle has a complex structure, and the special main reduction parts have poor versatility, are complicated to process, and are difficult to assemble and disassemble; the grader rear axle is a swing sleeve structure, which is easy to wear due to poor load-bearing and causes wear and oil leakage of the swing sleeve; the wheel side is positioned simultaneously by a balance box and a wheel hub, and the coaxiality error is large, which can easily shorten the service life of the bearing; the geological conditions of the mine are complex, various types of ores are hard and sharp, the slag is trivial and difficult to deal with, there is a lot of dust, and the construction conditions are bad, and this working environment causes serious wear on the brake system.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rear axle of a wet brake grader for mining operations, comprising a primary reduction assembly, a secondary reduction assembly and a tertiary reduction assembly, wherein the primary reduction assembly is provided with a secondary reduction assembly at both ends thereof, a slewing bearing assembly is provided in the secondary reduction assembly, a balancing box is provided at the front and rear sides of the secondary reduction assembly, a tertiary reduction assembly is provided at the outer end of the balancing box, a sealing structure, a hardened adjustment sleeve, an auxiliary assembly and a friction plate are provided in the tertiary reduction assembly, and the tertiary reduction assembly is connected to a tire via a connecting plate and a bolt assembly.

[0006] Preferably, the three-stage reduction assembly, the output sprocket, the output shaft disc, the brake cover, the brake housing and the brake disc seat, the output sprocket is spline-connected to the output shaft disc.

[0007] Preferably, the brake cover and the brake housing are connected to the output shaft disc via a positioning shaft, the brake disc seat is spline-connected to the output sprocket, and the outer shaft spline of the brake disc seat is fixedly mounted with a friction plate.

[0008] Preferably, the sealing structure comprises a piston, a sealing member, a skeleton oil seal and a combined oil seal; the piston gap is installed in a brake housing; and sealing members are installed in two grooves inside and outside the piston.

[0009] Preferably, the skeleton oil seal is installed between the output sprocket and the brake cover, and the combined oil seal is installed between the brake housing and the output shaft disc.

[0010] Preferably, the auxiliary component includes eight rectangular springs and a guide stud, the eight rectangular springs are arranged on the outside of the guide stud, and the guide stud passes through the piston and is fastened to the brake housing.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the rear axle of the wet brake grader used for mining operations has little wear, can meet the swing requirements of the balance box, is easy to assemble and repair, is easy to disassemble and install tires, has built-in low wear and maintenance-free, has a large braking torque, a long service life, and is safer and more reliable.

[0012] 1. It is equipped with a slewing bearing assembly and a slewing bearing mechanism, which have the characteristics of rolling bearings. The balls and inner and outer raceways are heat-treated, with high hardness, good load-bearing and low wear. In addition, due to the spherical characteristics, it can meet the swing requirements of the balance box. At the same time, the two-stage reduction assembly is an integrated planetary reduction device, which makes the gears have a long service life;

[0013] 2. A connecting plate and a bolt assembly are provided. The connecting plate is fixedly installed on the inner side of the tire. The connecting plate is connected to the outer side of the output shaft plate by fastening screws. The inner and outer shells of the whole shell are connected by bolt assemblies and can be removed independently, so it is easy to assemble and maintain;

[0014] 3. A three-stage reduction assembly is provided, which is a built-in friction plate wet brake with a built-in sealing structure, a hardened adjustment sleeve and auxiliary components. It has low wear and maintenance-free, large braking torque, long service life, and is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first-stage reduction assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the two-stage reduction assembly of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the three-stage reduction assembly of the utility model.

[0019] In the figure: 1. primary reduction assembly; 2. secondary reduction assembly; 3. tertiary reduction assembly; 301. output sprocket; 302. output shaft disc; 303. brake cover; 304. brake housing; 305. brake disc seat; 4. tire; 5. sealing structure; 501. piston; 502. seal; 503. skeleton oil seal; 504. combined oil seal; 6. balance box; 7. hardened adjustment sleeve; 8. auxiliary components; 801. eight rectangular springs; 802. guide studs; 9. slewing bearing assembly; 10. connecting plate; 11. bolt assembly; 12. friction plate. 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 1-4 The utility model provides a technical solution: a rear axle of a wet brake grader for mining operations, including a first-stage reduction assembly 1, a second-stage reduction assembly 2, a third-stage reduction assembly 3, an output sprocket 301, an output shaft disc 302, a brake cover 303, a brake housing 304, a brake disc seat 305, a tire 4, a sealing structure 5, a piston 501, a seal 502, a skeleton oil seal 503, a combined oil seal 504, a balance box 6, a hardened adjustment sleeve 7, an auxiliary component 8, eight rectangular springs 801, a guide stud 802, a slewing bearing assembly 9, a connecting plate 10, a bolt assembly 11 and a friction plate 12;

[0022] The primary reduction assembly 1 of the rear axle of the wet brake grader for mining operation is installed in the integral bridge housing, and the master and driven gear pairs are equal-height tooth spiral bevel gear transmission structures. The integral bridge housing is fixedly connected to the primary reduction assembly 1, and is respectively connected to the balance box 6 and the secondary reduction assembly 2 at both ends. The primary reduction assembly 1 and the secondary reduction assembly 2 transmit power through the half shaft. The secondary reduction assembly 2 of the rear axle of the wet brake grader for mining operation is installed with a slewing bearing assembly 9. The slewing bearing assembly 9 is divided into an outer slewing body and an inner slewing body. The outer slewing body is designed to be fixed on the output balance box 6 by a bolt assembly 11, and the inner slewing body is designed to be a fixing part and is connected by bolts. The component 11 is on the middle bridge body. Through the inner and outer swivels of the slewing bearing assembly 9, the integral bridge housing and the balance box 6 can realize circumferential rotation. During operation, the inner swivel is fixed, and the outer swivel drives the balance box 6 to rotate along the raceways of the inner and outer swivels by the rolling bodies, thereby satisfying the swing required by the balance box 6 to adapt to the bumpy road surface. At the same time, the two-stage reduction assembly 2 integral planetary reduction device adopts a five-axis planetary gear NGW reduction structure, the planetary gear carrier rotates, the reduction ratio is large, the gear load distribution is more reasonable, the load is small, the planetary gear rotation lubrication and cooling are better, the external installation size is reduced, and the overall assembly or removal can be performed in the form of components, which is conducive to production and maintenance;

[0023] The three-stage reduction assembly 3 for the rear axle of the wet brake grader for mining operation is an integral independent wheel side structure with built-in wet brake. The three-stage reduction assembly 3 includes an output sprocket 301, an output shaft disc 302, a brake cover 303, a brake housing 304 and a brake disc seat 305. The output sprocket 301 and the output shaft disc 302 are fastened together by a bolt assembly 11, so that the entire wheel side assembly is fastened together. The output sprocket 301 is spline-connected with the output shaft disc 302, and the power is transmitted to the output shaft disc 302 via the input sprocket through the spline. The spline connection is easy to process and assemble, and has strong interchangeability. The brake housing 304 and the brake cover 303 are connected to each other. The piston 501 is connected to the output shaft disc 302 through a positioning bearing to achieve relative rotation. The piston 501 is installed in the brake housing 304 with a gap. Seals 502 are installed in the inner and outer grooves of the piston 501 to form a sealed cavity with the brake housing 304. The pin is fixed in the mounting hole of the brake housing 304. The brake pad is floatingly installed in the brake housing 304 through the pin. The outer shaft and inner hole of the brake disc seat 305 are both splines. The friction plate 12 is installed on the outer shaft spline. The inner hole spline is connected to the output shaft disc 302 and is stepped. The brake cover 303 and the brake housing 304 are fastened by the bolt assembly 11 to form a closed cavity. The piston 501 moves rightwards and pushes the brake pad and the friction pad 12 to move rightwards at the same time and squeezes on the end surface of the brake cover 303 to achieve braking of the output shaft disc 302. The skeleton oil seal 503 is installed between the output sprocket 301 and the brake cover 303, and the combined oil seal 504 is installed between the brake housing 304 and the output shaft disc 302, so that the cavity has higher sealing performance. The above-mentioned piston 501, seal 502, skeleton oil seal 503, and combined oil seal 504 are a sealing structure 5;

[0024] The eight rectangular springs 801 and the guide studs 802 pass through the piston 501 and are fastened to the brake housing 304. The eight rectangular springs 801 are positioned between the steps of the piston 501 and the guide studs 802. The oil inlet of the brake housing 304 pushes the piston 501 to move rightward and compresses the eight rectangular springs 801 at the same time. After the oil pressure is released, the piston 501 automatically returns to its original position under the action of the eight rectangular springs 801. The eight rectangular springs 801 can ensure smooth return and complete disengagement of the brake. The above-mentioned eight rectangular springs 801 and the guide studs 802 are auxiliary components 8, which are hardened. The adjusting sleeve 7 is installed between the output shaft disc 302 and the output sprocket 301. The bolt assembly 11 is tightened to make the positioning bearing clearance reasonable and compact the outer end surface of the hardened adjusting sleeve 7. The output shaft disc 302 and the hardened adjusting sleeve 7 are connected and fastened as a whole through the bolt assembly 11. Even if the clearance of the positioning bearing increases after long-term use, the fastening force of the bolt assembly 11 will not be reduced, which plays an anti-loosening role and makes the wheel assembly stable. The inner side of the tire 4 is fixedly installed with a connecting plate 10, and the output shaft disc 302 on the outer side of the three-stage reduction assembly 3 is connected with the tire 4 through the bolt assembly 11 and the connecting plate 10;

[0025] The working principle of the rear axle of the wet brake grader for mining operations is as follows: the power is transmitted to the planetary reducer assembly in the secondary reduction assembly 2 through the meshing of the master and driven gear pairs in the primary reduction assembly 1, and is transmitted to the double-row sprockets after being reduced in speed by the planetary reducer assembly. The double-row sprockets are meshed and transmitted to the input sprockets through the chain, and the output sprocket 301 is meshed and connected with the output shaft disc 302 through the internal spline and transmits the power, thereby driving the tire 4 to rotate and driving the grader to operate.

[0026] The above completes a series of operations for the rear axle of the wet brake grader for mining operations. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rear axle of a wet brake grader for mining operations, comprising a primary reduction assembly (1), a secondary reduction assembly (2) and a tertiary reduction assembly (3), characterized in that: The left and right ends of the first-stage reduction assembly (1) are equipped with a second-stage reduction assembly (2), a slewing bearing assembly (9) is installed in the second-stage reduction assembly (2), a balance box (6) is installed on the front and rear sides of the second-stage reduction assembly (2), a third-stage reduction assembly (3) is installed on the outer end of the balance box (6), a sealing structure (5), a hardened adjustment sleeve (7), an auxiliary component (8) and a friction plate (12) are installed in the third-stage reduction assembly (3), and the third-stage reduction assembly (3) is connected to a tire (4) via a connecting plate (10) and a bolt assembly (11).

2. The rear axle of a wet brake grader for mining operations according to claim 1 is characterized in that: The three-stage reduction assembly (3), the output sprocket (301), the output shaft disc (302), the brake cover (303), the brake housing (304) and the brake disc seat (305), wherein the output sprocket (301) is spline-connected with the output shaft disc (302).

3. The rear axle of a wet brake grader for mining operations according to claim 2 is characterized in that: The brake cover (303) and the brake housing (304) are connected to the output shaft disc (302) via a positioning shaft, the brake disc seat (305) is spline-connected to the output sprocket (301), and a friction plate (12) is fixedly mounted on the outer shaft of the brake disc seat (305) via splines.

4. The rear axle of a wet brake grader for mining operations according to claim 1 is characterized in that: The sealing structure (5) comprises a piston (501), a sealing member (502), a skeleton oil seal (503) and a combined oil seal (504); the piston (501) is installed in a brake housing (304) with a clearance, and the sealing member (502) is installed in two inner and outer grooves of the piston (501).

5. The rear axle of a wet brake grader for mining operations according to claim 4 is characterized in that: The skeleton oil seal (503) is installed between the output sprocket (301) and the brake cover (303), and the combined oil seal (504) is installed between the brake housing (304) and the output shaft disc (302).

6. The rear axle of a wet brake grader for mining operations according to claim 1 is characterized in that: The auxiliary component (8) comprises eight rectangular springs (801) and a guide stud (802), wherein the eight rectangular springs (801) are arranged outside the guide stud (802), and the guide stud (802) passes through the piston (501) and is fastened to the brake housing (304).

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