Artillery orientation slewing mechanism

Abstract

The utility model provides an artillery orientation slewing mechanism, including outer ring, small steel ball and thin gear ring, thin gear ring upper end is coaxially installed in outer ring inner cavity, outer ring inner wall and thin gear ring outer wall are provided with annular groove, form annular track by cooperation, a plurality of small steel ball enter annular raceway through the ball hole that is provided in outer ring side wall. A plurality of oil injection holes are formed in the side wall of the outer ring and correspond to the annular groove, and an oil cup is mounted on the oil injection holes, so that the azimuth slewing mechanism is convenient to maintain. An upper ring and a lower ring in the background technology are replaced by the outer ring, the total height is reduced by 25 cm compared with an existing slewing mechanism, the height of a live wire is reduced, the overall weight is reduced by 1045 N compared with an existing structure, and the requirements for weight reduction and space limitation of a weapon station are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of artillery, and in particular relates to an artillery azimuth rotation mechanism. Background Art

[0002] Reference Figure 11 and Figure 12 . The azimuth rotation mechanism of a gun generally adopts a three-ring structure including an upper ring, a lower ring and a gear ring, and uses alloy materials with high strength, high hardness and high wear resistance. There is currently an azimuth rotation mechanism, which mainly includes an upper ring 1, a washer 2, a bolt 3, a retainer 4, a steel ball 5, a gear ring 6, a lower ring 7 and a sealing ring 8. The gear ring 6 of a gun on a certain weapon station is connected to the top deck of the vehicle body by bolts, the upper ring 1 and the lower ring 8 are fixed by bolts 3, the upper ring 1 is fixed to the main shell by bolts, the retainer 4 is used to limit the steel ball, and the washer 2 is used to adjust the gap between the upper ring 1 and the lower ring 8, so that the axial displacement of the upper and lower ring fixed structure is no more than 0.1mm, and when rotating horizontally, the no-load torque is no more than 30NM. This azimuth rotation mechanism is used to bear the weight of the turret and the station body and the impact disturbance during driving and shooting. After its gear ring is engaged with the main gear of the steering machine, it is driven by the azimuth motor to complete the rotation movement in the azimuth direction of the station body. However, the azimuth rotary mechanism of this three-ring structure is too heavy due to the excessive thickness of the gear ring, which cannot meet the weight reduction requirements of the weapon station. On the other hand, due to the limited height space of the weapon station, the excessive thickness of the gear ring causes the overall size of the rotary mechanism to be too large, which cannot meet the space requirements of the weapon station. Summary of the Invention

[0003] The purpose of the utility model is to solve the problem in the prior art that the gear ring in the azimuth rotation mechanism is too thick, resulting in the rotation mechanism being unable to meet the requirements of weapon station weight reduction and limited height space, and to provide a gun azimuth rotation mechanism.

[0004] To achieve the above objectives, the technical solutions provided by this utility model are:

[0005] A gun azimuth rotation mechanism, which is special in that it includes an outer ring 9, a thin gear ring 11 and a small steel ball;

[0006] The outer ring 9 is a multi-stage rotating body, with small shaft segments at both ends of the large shaft segment. The end face of the large shaft segment is fixedly connected to the main shell of the gun, and the inner wall of the small shaft segment located below is provided with an annular groove.

[0007] A ball hole 16 is radially provided on the side wall of the small shaft section at the position corresponding to the annular groove, and the small steel ball 13 can enter the annular groove through the ball hole 16;

[0008] The thin gear ring 11 is in the shape of a multi-stage rotating body, with small shaft segments at both ends of the large shaft segment; the small shaft segment located at the top is coaxially sealed and installed in the inner cavity of the outer ring 9, and an annular groove is provided on the outer wall, which cooperates with the annular groove on the inner wall of the small shaft segment of the outer ring 9 to form an annular raceway, and multiple small steel balls can move in the annular raceway;

[0009] The end face of the large shaft section of the thin gear ring is fixedly connected to the top deck of the weapon station vehicle body; the main gear of the steering gear is coaxially installed in the thin gear ring 11 and can mesh with the teeth on the inner wall of the thin gear ring 11 for transmission;

[0010] The lower end surface of the small shaft section of the outer ring 9 does not contact the upper end surface of the large shaft section of the thin gear ring 11.

[0011] The total height of the outer ring 9 and the thin gear ring 11 after assembly is less than the height of the installation space of the gun azimuth rotation mechanism on the weapon station.

[0012] Furthermore, the outer ring 9 is in the shape of a three-step rotational body, and a first sealing ring groove is provided on the inner wall, and a first sealing ring 10 is installed in the first sealing ring groove;

[0013] The cross section of the first sealing ring 10 is a right-angled trapezoid, the right-angled end is located in the first sealing ring groove, and the bottom of the inclined end is in close contact with the top surface of the thin gear ring 11.

[0014] Furthermore, a plurality of oil injection holes 14 are radially provided on the side wall of the small shaft section below the large shaft section of the outer ring 9. The axis of the oil injection hole 14 and the axis of the ball bearing hole are located in the same plane, and the distance from the center of the two to the end face of the small shaft section is the same.

[0015] Furthermore, three oil injection holes are radially distributed on the side wall of the small shaft section below the large shaft section of the outer ring 9, and the oil injection hole close to the ball bearing hole 16 has a horizontal angle of 10° with the ball bearing hole.

[0016] Furthermore, the oil filling hole 14 is stepped, the small diameter hole is connected to the annular groove on the outer ring 9, and an oil cup 15 is installed in the large diameter hole.

[0017] Furthermore, it also includes a pin 17, which is installed in the ball bearing hole to seal the ball bearing hole after the small steel ball 13 is assembled.

[0018] Furthermore, a second sealing ring groove is provided on the bottom end surface of the thin gear ring 11, and a second sealing ring 12 is installed in the second sealing ring groove. The cross section of the second sealing ring 12 is square.

[0019] Furthermore, an annular weight-reducing groove is provided on the end face of the small shaft segment located above the large shaft segment of the outer ring 9.

[0020] The advantages of the utility model are:

[0021] 1. The utility model changes the artillery azimuth rotation mechanism from a three-ring structure to a double-ring structure, with the outer ring replacing the upper and lower rings in the existing structure. The total height of the azimuth rotation mechanism of the utility model is only 50 mm, which is 25 mm less than that of the existing azimuth rotation mechanism; the total weight of the utility model is only 1022 N, which is 1045 N less than that of the existing structure, meeting the weight reduction and limited height space requirements of the weapon station.

[0022] 2. The overall height of the rotary mechanism of the utility model is reduced, so that the height of the firing line is reduced, meeting the battlefield index requirements of the weapon equipment.

[0023] 3. The structure of the utility model is changed from a three-ring structure to a double-ring structure, which reduces the purchase and storage costs of raw materials; at the same time, since the retainer and adjustment gasket are omitted in the structure, the processing cost is also reduced.

[0024] 4. The utility model eliminates the need for a retainer and an adjusting gasket, is simple to install and adjust, and has good workmanship.

[0025] 5. The upper and lower parts of the rotary mechanism of the utility model are equipped with sealing rings, which are made of silicone material to ensure more reliable sealing.

[0026] 6. Three oil filling holes equipped with oil cups are evenly distributed on the outer ring of the rotary structure of the utility model, which is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional diagram of the azimuth rotary mechanism of the utility model;

[0028] Figure 2 It is a cross-sectional view of the azimuth rotary mechanism of the utility model;

[0029] Figure 3 It is a stereogram of the outer circle;

[0030] Figure 4 This is a top view of the outer ring, showing the position angle between the oil filling hole close to the ball bearing hole and the ball bearing hole;

[0031] Figure 5 It is a half-section view of the outer ring;

[0032] Figure 6 1 is a schematic diagram of the cross-sectional shape of the first sealing ring;

[0033] Figure 7 It is a three-dimensional diagram of a thin gear ring;

[0034] Figure 8 It is a half-section view of the thin gear ring;

[0035] Figure 9 1 is a schematic diagram of the cross-sectional shape of the second sealing ring;

[0036] Figure 10 It is a structural diagram of the oil cup;

[0037] Figure 11 It is a three-dimensional model diagram of the artillery azimuth rotation mechanism of the background artillery;

[0038] Figure 12 It is a half-section view of the artillery azimuth rotation mechanism of the background artillery.

[0039] Among them: 1-upper ring, 2-washer, 3-bolt, 4-retainer, 5-steel ball, 6-gear ring, 7-sealing ring, 8-lower ring, 9-outer ring, 10-first sealing ring, 11-thin gear ring, 12-second sealing ring, 13-small steel ball, 14-oil filling hole, 15-oil cup, 16-ball hole, 17-pin, 18-threaded hole, 19-square weight reduction groove, 20-mounting hole, 21-annular groove, 22-first sealing ring groove, 23-second sealing ring groove. DETAILED DESCRIPTION

[0040] The following is a further detailed description of the present invention with reference to the accompanying drawings and specific embodiments:

[0041] See also Figure 1 — Figure 10 The utility model provides a gun azimuth rotation mechanism, comprising an outer ring 9, a first sealing ring 10, a thin gear ring 11, a second sealing ring 12, a small steel ball 13, an oil cup 15 and a pin 17. The large end of the thin gear ring 11 is fixed to the top deck of the vehicle body, the steering gear is coaxially installed in the cavity of the thin gear ring 11, and the main gear of the steering gear is engaged with the teeth on the inner wall of the thin gear ring, which can realize the rotation movement of the weapon station body in the azimuth direction under the drive of the azimuth motor; the outer ring 9 is coaxially installed on the outer wall of the small shaft of the thin gear ring 11. Annular grooves are provided on the outer wall of the small shaft of the thin gear ring 11 and the inner wall of the small shaft of the outer ring 9, which can cooperate with each other to form an annular raceway. A ball hole 16 with a diameter of φ10 is opened on the annular groove of the outer ring 9, and the small steel ball 13 can enter the annular raceway between the outer ring 9 and the thin gear ring 10 through the ball hole 16. After the small steel ball 13 is assembled, a pin 17 is fixedly installed in the ball bearing hole 16 to seal it. Multiple oiling holes are located on the sidewall of the small shaft of the outer ring 9, corresponding to the annular groove. These holes are aligned axially with the ball bearing hole 16, with the holes closest to the ball bearing hole 16 forming a 10° horizontal angle with the hole. Oil cups 15 are installed at the ends of the three oiling holes 14. A first sealing ring 10 is embedded in the first sealing ring groove on the upper inner side of the outer ring 9, while a second sealing ring 12 is embedded in the second sealing ring groove on the lower side of the thin gear ring 11.

[0042] Reference Figure 3-Figure 6The outer ring 9 is in the shape of a multi-stage rotating body and is made of an alloy material with high strength, high hardness and high wear resistance. The two ends of the large shaft section are small shaft sections. The end surface of the large shaft section is evenly distributed with two circles of M10 threaded holes 18, which are used to fix the outer ring to the main shell of the gun. An annular groove is provided on the inner wall of the small shaft section below the large shaft section, and a ball hole 16 is radially provided on the side wall of the small shaft section below and corresponding to the position of the annular groove. Multiple small steel balls 13 can enter the annular groove through the ball hole 16. The annular groove on the outer ring cooperates with the annular groove on the outer wall of the thin gear ring to form an annular raceway for accommodating the small steel balls. It also includes a pin 17, which is installed in the ball hole to block the ball hole after the small steel ball 13 is assembled to prevent the small steel ball 13 from slipping out of the ball hole.

[0043] The lower end face of the small shaft section of the outer ring 9 does not contact the upper end face of the large shaft section of the thin gear ring 11. The total height of the outer ring 9 and the thin gear ring 11 after assembly is 50 mm, which is smaller than the height of the installation space of the artillery azimuth rotation mechanism on the weapon station.

[0044] A first sealing ring groove 22 is defined above the inner wall of the outer ring 9. Mounted within this groove is a first sealing ring 10, made of silicone material. This material offers excellent sealing performance, high-temperature and weather resistance, anti-aging properties, impact resistance, shock resistance, and waterproofing. The first sealing ring 10 has a right-angled trapezoidal cross-section, with its right-angled end positioned within the sealing ring groove and its beveled end in close contact with the top surface of the thin gear ring 11, sealing the entire gun's azimuth and rotation mechanism.

[0045] Multiple oiling holes 14 are radially distributed along the sidewall of the small shaft section, located below the large shaft section of the outer ring 9. The axes of these oiling holes 14 and the axis of the ball bearing hole are coplanar, and their centers are equidistant from the end face of the small shaft section. These oiling holes are stepped, with the smaller diameter holes connecting to the annular groove on the outer ring 9, and the larger diameter holes housing an oil cup 15. In this embodiment, three oiling holes 14 are evenly distributed, and the hole closest to the ball bearing hole 16 forms a 10° horizontal angle with the hole.

[0046] The diameter of the small steel balls 13 is changed from 20 mm in the background art to 10.4 mm, the number is changed from 200 to 500, and the weight is reduced by 100 N.

[0047] Reference Figure 10 The oil cup 15 is a standard part with the standard number GB1152-79. The mounting thread of the oil cup 15 is M6. Three oil cups 15 are used in the utility model, which are respectively installed in the three stepped oil filling holes 14 of the outer ring 9 to facilitate the oiling and maintenance of the azimuth rotary mechanism.

[0048] Reference Figure 7-Figure 9The thin gear ring 11 is a multi-stage rotating body, with small shaft segments at both ends of the large shaft segment. The small shaft segment located above is coaxially sealed and installed in the inner cavity of the outer ring 9. An annular groove is provided on the outer wall, which cooperates with the annular groove on the inner wall of the small shaft segment of the outer ring 9 to form an annular raceway. Multiple small steel balls can move in the annular raceway. 36 M12 mounting holes 20 are axially opened on the large end of the thin gear ring 11, which are used to fix the large end of the thin gear ring 11 to the top deck of the weapon station body. The main gear of the steering machine is coaxially installed in the inner cavity of the thin gear ring 11 and can engage with the teeth on the inner wall of the thin gear ring 11. Under the drive of the azimuth motor, it can realize the rotational movement of the weapon station body in the azimuth direction. The thin gear ring is the main body of the gun azimuth rotation mechanism of the utility model, and is also the mounting base of the outer ring 9, the first sealing ring 10 and the small steel balls 13.

[0049] The bottom end surface of the thin gear ring 11 is provided with a second sealing ring groove 23, in which the second sealing ring 12 is installed, so that the thin gear ring and the top deck of the station body are sealed together to achieve a sealing effect on the vehicle body. The second sealing ring 12 has a square cross-section and is made of silicone material.

[0050] During assembly:

[0051] 1. Place the thin gear ring 11 on the mounting platform so that the mounting surface where the bottom of the thin gear ring 11 is fixed to the top deck of the vehicle body is in close contact with the surface of the mounting platform;

[0052] Apply low-temperature aviation grease evenly to the annular groove of the thin gear ring 11, and place an adjustment washer on the upper end surface of the large end of the thin gear ring 11 to support the outer ring 9;

[0053] 2. Evenly apply low-temperature aviation grease to the annular groove of the outer ring 9. Place the outer ring 9 coaxially on the thin gear ring 11, with the lower end surface of the outer ring 9 in contact with the adjusting washer, so that the annular groove of the outer ring 9 fits with the arc-shaped groove on the thin gear ring 11;

[0054] 3. Use an awl to send 500 small steel balls 13 one by one from the ball bearing holes 16 into the annular raceway formed by the outer ring 9 and the thin gear ring 11.

[0055] 4. After all the small steel balls 13 are installed in the annular raceway of the outer ring 9, rotate the outer ring 9 and adjust the position of the outer ring 9 relative to the thin gear ring 11 by adjusting the washer support. The specific method is: mark multiple radial lines on the upper surfaces of the outer ring 9 and the thin gear ring 11, and use a dial indicator to mark the lines until the axial displacement of the outer ring 9 and the thin gear ring 11 is no more than 0.1mm, and the pitch circle runout of the thin gear ring 11 is no more than 0.15. During horizontal rotation, adjust the number of steel balls and use a spring scale to pull the outer ring 9 so that the no-load torque does not exceed 30NM.

[0056] 5. Remove the adjustment shim placed on the upper surface of the mounting hole 20 of the thin gear ring 11.

[0057] 6. After evenly applying adhesive to the surfaces of the sealing groove on the upper inner wall of the outer ring 9, insert the square end of the first sealing ring 10 into the strip sealing groove, with the bottom of the bevel end close to the top surface of the thin gear ring 11;

[0058] 7. Apply adhesive evenly to all surfaces of the sealing groove at the bottom of the thin gear ring 11, and embed the second sealing ring 11 into the sealing groove at the bottom of the thin gear ring 9.

[0059] 8. Fasten the outer ring 9's larger end to the gun's main casing with 60 M10 bolts; fasten the thin gear ring 11's larger end to the top deck of the weapon station with 36 M12 bolts.

[0060] The outer ring of this new design combines the upper and lower rings of the prior art into one, reducing its height by 15cm and its weight by 600N. Due to the thinning of the outer ring and the downward shifting of the raceway, the gear ring is thinner by 5cm at the top and 5cm at the bottom compared to the prior art, resulting in a height reduction of 10cm and a weight reduction of 300N. This new design also eliminates the retaining bracket and adjustment shim, reducing its weight by 45N. The overall height of this new design is 25cm shorter than the prior art, and its weight is reduced by 1045N, allowing the azimuth rotation mechanism to meet the weapon station's weight reduction and limited height space requirements.

[0061] The above description is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. A gun azimuth rotation mechanism, characterized in that: It includes an outer ring (9), a thin gear ring (11) and a small steel ball (13); The outer ring (9) is in the shape of a multi-stage rotating body, with small shaft segments at both ends of the large shaft segment, the end face of the large shaft segment is fixedly connected to the main shell of the gun, and the inner wall of the small shaft segment located below is provided with an annular groove. A ball hole (16) is radially provided on the side wall of the small shaft section at the lower portion and corresponding to the position of the annular groove, and the small steel ball (13) can enter the annular groove through the ball hole (16); The thin gear ring (11) is in the shape of a multi-stage rotating body, with small shaft segments at both ends of the large shaft segment; the small shaft segment located above is coaxially sealed and installed in the inner cavity of the outer ring (9), and an annular groove is provided on the outer wall, which cooperates with the annular groove on the inner wall of the small shaft segment of the outer ring (9) to form an annular raceway, and a plurality of the small steel balls can move in the annular raceway; The end face of the large shaft section of the thin gear ring is fixedly connected to the top deck of the weapon station vehicle body; the main gear of the steering gear is coaxially installed in the thin gear ring (11) and can be meshed with the teeth on the inner wall of the thin gear ring for transmission; The lower end surface of the small shaft section of the outer ring (9) does not contact the upper end surface of the large shaft section of the thin gear ring (11); The total height of the outer ring (9) and the thin gear ring (11) after assembly is less than the height of the installation space of the gun azimuth rotation mechanism on the weapon station.

2. The gun azimuth rotation mechanism according to claim 1, characterized in that: The outer ring (9) is in the shape of a three-stage rotating body, and a first sealing ring groove is provided above the inner wall, and a first sealing ring (10) is installed in the first sealing ring groove; The cross section of the first sealing ring (10) is a right-angled trapezoid, the right-angled end is located in the sealing ring groove, and the bottom of the inclined surface end is in close contact with the top surface of the thin gear ring (11).

3. The gun azimuth rotation mechanism according to claim 2, characterized in that: A plurality of oil injection holes (14) are radially provided on the side wall of the small shaft section below the large shaft section of the outer ring (9). The axes of the oil injection holes (14) and the axis of the ball bearing hole are located in the same plane, and the distances from the centers of the two to the end face of the small shaft section are the same.

4. The gun azimuth rotation mechanism according to claim 3, characterized in that: Three oil injection holes are radially distributed on the side wall of the small shaft section below the large shaft section of the outer ring (9), and the angle between the oil injection hole near the ball hole (16) and the ball hole (16) is 10 degrees.

5. The gun azimuth rotation mechanism according to claim 4, characterized in that: The oil filling hole (14) is stepped, the small diameter hole is connected to the annular groove on the outer ring (9), and an oil cup (15) is installed in the large diameter hole.

6. The gun azimuth rotation mechanism according to claim 1, characterized in that: The utility model also comprises a pin (17), which is installed in the ball bearing hole and is used for blocking the ball bearing hole after the small steel ball is assembled.

7. The gun azimuth rotation mechanism according to claim 1, characterized in that: A second sealing ring groove is provided on the bottom end surface of the thin gear ring (11), a second sealing ring (12) is installed in the second sealing ring groove, and the cross section of the second sealing ring (12) is square.

8. The gun azimuth rotation mechanism according to claim 1, characterized in that: An annular weight-reducing groove is provided on the end face of the small shaft section located above the large shaft section of the outer ring (9).

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