Electric light trail hoe structure of self-propelled cannon

Abstract

The utility model discloses a self-propelled cannon electric light trail hoe structure which comprises a vehicle body guide cylinder, the vehicle body guide cylinder is arranged at the tail of a self-propelled cannon loading vehicle body, a lead screw nut is installed on the inner wall of the vehicle body guide cylinder through a thrust bearing, and the lead screw nut is driven by a motor installed outside the vehicle body guide cylinder through a speed reducer. The middle upper part of the titanium alloy lead screw is assembled in the vehicle body guide cylinder and is matched with the lead screw nut; the lower end of the titanium alloy lead screw is divided into a hydraulic cavity through a partition plate, a center cavity is formed in the titanium alloy lead screw, the lower end of the center cavity is connected with the hydraulic cavity, and a pressure sensor is arranged at the upper end of the center cavity. A floating cylinder barrel is arranged at the lower end of the hydraulic cavity, a throttling ring is arranged at the upper end of the floating cylinder barrel, and a throttling hole is formed in the middle of the throttling ring; the upper portion of the floating piston is assembled in the floating cylinder barrel in a sliding mode, the plunger is fixed to the middle of the upper end of the floating piston, and the floating cylinder barrel and the hydraulic cavity are filled with hydraulic oil. A chassis is arranged at the lower end of the floating piston.

Description

Technical Field

[0001] The utility model relates to the field of mechanical structure design, and particularly relates to an electric light spade structure for a self-propelled gun. Background Art

[0002] At present, the spade structures commonly used in the prior art are divided into the large frame type and the seat plate type. The large frame type is mainly composed of a hydraulic cylinder and a large frame, and the large frame is driven to flip by hydraulic pressure. This type of spade structure requires a spade pit to be dug in advance, which is not conducive to the rapid conversion of combat operations; the seat plate type spade structure drives the seat plate to rise and fall by hydraulic pressure, locks with a hydraulic lock to bear the axial force, and uses the cylinder barrel or the bearing square barrel to bear the lateral bending moment.

[0003] Due to the huge load borne by the spade, in order to meet the requirements of structural strength and rigidity, the weights of the above two types of spade structures are very large, which is not conducive to the lightweight design requirements of the current self-propelled guns. Summary of the Invention

[0004] The purpose of the utility model is to provide an electric light spade structure for a self-propelled gun to overcome the problem that the existing spade structure is too heavy to meet the lightweight design requirements of the self-propelled gun.

[0005] To achieve the above task, the utility model adopts the following technical solutions:

[0006] An electric light spade structure for a self-propelled gun includes a vehicle body guiding cylinder arranged at the tail of the loading vehicle body of the self-propelled gun. A lead screw nut is installed on the inner wall of the vehicle body guiding cylinder through a thrust bearing. The lead screw nut is driven by a motor installed outside the vehicle body guiding cylinder through a speed reducer. The middle upper part of the titanium alloy lead screw is assembled in the vehicle body guiding cylinder and cooperates with the lead screw nut.

[0007] The lower end of the titanium alloy lead screw is separated into a hydraulic cavity by a partition. A central cavity is opened in the titanium alloy lead screw. The lower end of the central cavity is connected to the hydraulic cavity, and a pressure sensor is arranged at the upper end of the central cavity; a floating cylinder is arranged at the lower end of the hydraulic cavity. A throttle ring is arranged at the upper end of the floating cylinder, and a throttle hole is arranged in the middle of the throttle ring; the upper part of the floating piston is slidably assembled into the floating cylinder, and a plunger is fixed in the middle of the upper end of the floating piston. Hydraulic oil is filled in both the floating cylinder and the hydraulic cavity; a chassis is arranged at the lower end of the floating piston.

[0008] Further, the vehicle body guiding cylinder is an aluminum alloy guiding cylinder.

[0009] Further, a circle of outwardly convex bearing installation cavities is arranged on the side wall of the vehicle body guiding cylinder. Thrust bearings are assembled at both the upper and lower ends of the bearing installation cavity, and the lead screw nut is assembled between the thrust bearings.

[0010] Furthermore, the motor and the reducer are installed on the side of the guide cylinder of the vehicle body, and the output end of the reducer cooperates with the screw nut to provide the lifting power of the titanium alloy screw.

[0011] Furthermore, the titanium alloy lead screw and the lead screw nut are matched in a trapezoidal lead screw form, which converts the rotation of the lead screw nut into the linear motion of the titanium alloy lead screw.

[0012] Furthermore, a cover is provided at the upper end of the titanium alloy lead screw, the pressure sensor is mounted on the cover, and a probe of the pressure sensor extends into the central cavity.

[0013] Furthermore, a weight-reducing chamber is provided inside the floating piston.

[0014] Furthermore, the lower end of the titanium alloy lead screw is encapsulated by a lower head arranged around the outside of the floating cylinder.

[0015] Furthermore, the chassis is connected to the lower end of the floating piston through a ball joint.

[0016] Compared with the prior art, the present invention has the following technical features:

[0017] 1. The utility model forms a large transmission ratio structure through a motor, a reducer, a lead screw, etc., and can realize automatic and rapid lifting of the hoe by a small-power high-speed motor.

[0018] 2. The utility model forms a damping and buffering structure through a floating cylinder, a floating piston, a throttle ring, a plunger, etc., and realizes the force buffering of the hoe during the shooting process through the small hole damping and buffering principle.

[0019] 3. The utility model makes full use of the self-locking characteristics of the titanium alloy lead screw and the lead screw nut, and the large-section thick-wall lead screw contacts the vehicle body guide cylinder, thereby realizing simple load-bearing of the hoe without relying on external force.

[0020] 4. This utility model simplifies the structural composition and load transfer process through structural separation design, application of lightweight materials (titanium alloy), damping and buffering force reduction, and self-locking load-bearing screws. While meeting the requirements of self-propelled gun shooting stability and spade structure rigidity, it can achieve a lightweight design that controls the mass of a single spade within 100kg. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic axial cross-sectional view of the present invention;

[0022] Figure 2 This is a schematic diagram of the external structure of the utility model.

[0023] Description of reference numerals in the figure: 1 vehicle body guiding cylinder, 2 motor, 3 speed reducer, 4 lead screw nut, 5 thrust bearing, 6 titanium alloy lead screw, 7 floating cylinder, 8 throttle ring, 9 floating piston, 10 plunger, 11 seat plate, 12 pressure sensor, 13 bearing installation cavity, 14 partition plate, 15 hydraulic cavity, 16 central cavity, 17 cover, 18 throttle hole, 19 weight reduction cavity, 20 lower head. Detailed implementation manner

[0024] See the appendix Figure 1 and Figure 2 and the accompanying drawings, the present utility model provides an electric light spade structure for a self-propelled gun. Through methods such as motor drive, large transmission ratio transmission, damping buffer, lead screw self-locking load-bearing, application of lightweight materials, and sensor perception, the spade has advantages such as automatic rapid lifting with a small power and a large transmission ratio, and reliable load-bearing under lightweight structure conditions.

[0025] An electric light spade structure for a self-propelled gun provided by the present utility model includes a motor 2, a speed reducer 3, a lead screw nut 4, a thrust bearing 5, a titanium alloy lead screw 6, a floating cylinder 7, a throttle ring 8, a floating piston 9, a plunger 10, a seat plate 11, and a pressure sensor 12, wherein:

[0026] The vehicle body guiding cylinder 1 is arranged at the tail of the loading vehicle body of the self-propelled gun. The vehicle body guiding cylinder 1 is made of aluminum alloy and provides the functions of lifting guidance and load-bearing during the shooting of the self-propelled gun;

[0027] A circle of outwardly protruding bearing installation cavities 13 are provided on the side wall of the vehicle body guiding cylinder 1. Thrust bearings 5 are assembled at both the upper and lower ends in the bearing installation cavities 13. The lead screw nut 4 is assembled between the thrust bearings 5. The lead screw nut 4 is in the middle, and the thrust bearings 5 are arranged up and down to transfer the axial force of the spade to the vehicle body; The motor 2 and the speed reducer 3 are installed on the side of the vehicle body guiding cylinder 1. The output end of the speed reducer 3 is matched with the lead screw nut 4 to provide the lifting power for the titanium alloy lead screw 6;

[0028] The middle and upper part of the titanium alloy lead screw 6 is assembled in the vehicle body guiding cylinder 1. The titanium alloy lead screw 6 and the lead screw nut 4 are in the form of a trapezoidal lead screw fit. Through the anti-rotation and guiding effects of the vehicle body guiding cylinder 1, the rotation of the lead screw nut 4 is converted into the linear motion of the titanium alloy lead screw 6;

[0029] The lower end of the titanium alloy lead screw 6 is separated into a hydraulic chamber 15 by a partition plate 14. A central chamber 16 is provided in the titanium alloy lead screw 6, and the lower end of the central chamber 16 is connected to the hydraulic chamber 15. A sealing cover 17 is provided at the upper end of the titanium alloy lead screw 6, and a pressure sensor 12 is installed on the sealing cover 17. The probe of the pressure sensor 12 extends into the central chamber 16 to detect the pressure inside the titanium alloy lead screw 6. A floating cylinder 7 is provided at the lower end of the hydraulic chamber 15. A throttle ring 8 is provided at the upper end of the floating cylinder 7, and a throttle hole 18 is provided in the middle of the throttle ring 8. The upper part of the floating piston 9 is slidably assembled into the floating cylinder 7. A plunger 10 is fixed to the middle of the upper end of the floating piston 9. When the vehicle body guide cylinder 1 bears pressure, the plunger 10 and the floating piston 9 move up and down in the floating cylinder 7. The floating cylinder 7 and the hydraulic chamber 15 are both filled with hydraulic oil. A weight reduction chamber 19 is provided inside the floating piston 9.

[0030] The lower end of the titanium alloy lead screw 6 is encapsulated by a lower end head 20 provided around the outside of the floating cylinder 7. The chassis 11 is connected to the lower end of the floating piston 9 by a ball hinge.

[0031] The working process of the present utility model is as follows:

[0032] When the self-propelled gun travels to the combat state conversion, the drive motor 2 works, and the power is transmitted to the lead screw nut 4 through the speed reducer 3, driving the titanium alloy lead screw 6 to linearly descend relative to the vehicle body guide cylinder 1 until the seat plate 11 contacts the ground. When continuing to descend, the upper part of the floating piston 9 will move upward in the floating cylinder 7, and the hydraulic oil inside the floating cylinder 7 enters the hydraulic chamber 15 through the throttle hole 18 in the middle of the throttle ring 8. Then, the hydraulic oil in the hydraulic chamber 15 is pushed into the central chamber 16 of the titanium alloy lead screw 6, causing the gas in the central chamber 16 to be compressed and the pressure to increase. The pressure sensor 12 senses the change in the pressure signal in the central chamber 16. When the pressure reaches the preset value, the control motor 2 stops working, and the spade structure is placed in place.

[0033] When the self-propelled gun converts from the combat state to the traveling state, the motor 2 works (rotates in the reverse direction), and the power is transmitted to the lead screw nut 5 through the speed reducer 3, driving the titanium alloy lead screw 6 to linearly ascend relative to the vehicle body guide cylinder 1. When the absolute encoder built into the motor 2 senses that the code of the current position reaches the preset code, the motor 2 stops working, and the spade structure is retracted in place. Among them, the preset pressure value and the preset code can both be calibrated and set through prior experiments.

[0034] During the shooting process of the self-propelled gun, the recoil force of the gun after shooting is transmitted from the vehicle body to the ground through the spade structure:

[0035] First, the recoil force is transmitted to the thrust bearing 5 and the lead screw nut 4 through the vehicle body guide cylinder 1. The lead screw nut 4 is axially self-locked with the titanium alloy lead screw 6. Immediately afterwards, the floating piston 9 moves relative to the floating cylinder 7 under the action of force. When the floating piston 9 moves upward, it drives the plunger 10 to squeeze into the throttle hole 18 of the throttle ring 8, forming a hydraulic damping force, which is transmitted to the ground through the seat plate 11; the bending moment generated in the lateral direction is transmitted to the vehicle body through the mating contact between the titanium alloy lead screw 6 and the vehicle body guide cylinder 1, and the large cross-section and thick wall structure of the titanium alloy lead screw 6 ensures sufficient bending resistance.

[0036] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. An electric light spade structure for a self-propelled gun, characterized in that, It includes a vehicle body guiding cylinder (1), which is arranged at the tail of the self-propelled gun loading vehicle body. A lead screw nut (4) is installed on the inner wall of the vehicle body guiding cylinder (1) through a thrust bearing (5). The lead screw nut (4) is driven by a motor (2) installed outside the vehicle body guiding cylinder (1) through a speed reducer (3). The middle upper part of a titanium alloy lead screw (6) is assembled in the vehicle body guiding cylinder (1) and cooperates with the lead screw nut (4). The lower end of the titanium alloy lead screw (6) is separated into a hydraulic cavity (15) by a partition plate (14). A central cavity (16) is formed in the titanium alloy lead screw (6). The lower end of the central cavity (16) is connected to the hydraulic cavity (15), and a pressure sensor is arranged at the upper end of the central cavity (16). A floating cylinder (7) is arranged at the lower end of the hydraulic cavity (15). A throttling ring (8) is arranged at the upper end of the floating cylinder (7), and a throttling hole (18) is arranged in the middle of the throttling ring (8). The upper part of a floating piston (9) is slidably assembled into the floating cylinder (7). A plunger (10) is fixed to the middle upper end of the floating piston (9). Hydraulic oil is filled in both the floating cylinder (7) and the hydraulic cavity (15). A chassis (11) is arranged at the lower end of the floating piston (9).

2. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that, The vehicle body guiding cylinder (1) is an aluminum alloy guiding cylinder.

3. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that A circle of outward convex bearing installation cavities (13) are arranged on the side wall of the vehicle body guiding cylinder (1). Thrust bearings (5) are assembled at both the upper and lower ends in the bearing installation cavities (13). The lead screw nut (4) is assembled between the thrust bearings (5).

4. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that, The motor (2) and the speed reducer (3) are installed on the side of the vehicle body guiding cylinder (1). The output end of the speed reducer (3) cooperates with the lead screw nut (4) to provide the lifting power for the titanium alloy lead screw (6).

5. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that, The cooperation form between the titanium alloy lead screw (6) and the lead screw nut (4) is a trapezoidal lead screw, which converts the rotation of the lead screw nut (4) into the linear motion of the titanium alloy lead screw (6).

6. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that A sealing cover (17) is arranged at the upper end of the titanium alloy lead screw (6). The pressure sensor (12) is installed on the sealing cover (17), and the probe of the pressure sensor (12) extends into the central cavity (16).

7. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that, A weight reduction cavity (19) is arranged inside the floating piston (9).

8. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that The lower end of the titanium alloy lead screw (6) is encapsulated by a lower end head (20) arranged around the outside of the floating cylinder (7).

9. The electric light spade structure of the self-propelled gun according to claim 1, characterized in that, The chassis (11) is connected to the lower end of the floating piston (9) by a ball hinge method.

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