Hydraulic lock for torsion bar suspension

Abstract

The present application belongs to the field of tracked armored vehicles, and discloses a hydraulic locking device for torsion bar suspension, which comprises a balance elbow shaft, a support arranged at one end of the balance elbow shaft, an end face tooth arranged at the end of the balance elbow shaft, a limiting plate arranged at one end of the support, an end face toothed cylindrical boss arranged on the inner surface of the limiting plate, the cylindrical boss penetrating through the support and the end face tooth of the cylindrical boss being coaxial with the end face tooth of the balance elbow shaft, a reset spring arranged between the limiting plate and the support, one Z-shaped connecting plate installed on each side of the limiting plate, one hydraulic cylinder installed on each Z-shaped connecting plate, the piston rod of the hydraulic cylinder driving the connecting plate and the limiting plate to compress the reset spring or release the pressure, and the end face tooth of the balance elbow shaft and the end face tooth of the cylindrical boss being engaged or separated to realize suspension locking and unlocking. The present application can simultaneously solve the problems of complex structure, high cost and poor reliability of electric control locking, and the problems of large space requirement, manual operation and low transmission efficiency of mechanical locking devices such as turbine worm.

Description

Technical Field

[0001] This invention belongs to the field of tracked armored vehicles and relates to a hydraulic locking device for torsion bar suspension. Background Technology

[0002] Currently, the locking devices of torsion bar suspension systems in tracked armored vehicles can be broadly classified into two categories: a. motor-locking mechanism linkage type; b. mechanical type such as worm gear.

[0003] The locking mechanism is linked to the motor, using the motor to drive an adjustment mechanism to change the spring stiffness and achieve the locking function. Its disadvantages include reliance on electronic control, the risk of motor burnout due to stalling, complex structure, high cost, and unreliable locking due to the motor's own resistance torque. Mechanical locking mechanisms, such as worm gear locking, achieve self-locking through a worm gear drive component. However, they require large installation space, have low transmission efficiency, high energy loss, and poor reliability. Furthermore, most mechanical locking devices require manual operation. Both of these methods require connection to the balance elbow and vehicle body, achieving rigid locking of the suspension by restricting the rotation of the balance elbow. Summary of the Invention

[0004] (a) Purpose of the invention The purpose of this invention is to provide a hydraulic locking device for torsion bar suspension, which uses a small hydraulic cylinder to achieve rigid locking in a small space inside the vehicle, thereby improving the working stability of the operating system.

[0005] (II) Technical Solution To solve the above-mentioned technical problems, the present invention provides a hydraulic locking device for a torsion bar suspension, comprising a balance elbow shaft 1, a Z-shaped connecting plate 4, a hydraulic cylinder 5, a return spring 8, a limiting plate 9, and a bracket 11; the balance elbow shaft 1 has a bracket 11 on one end and end face teeth on the other end; the limiting plate 9 is arranged at one end of the bracket 11, and has a cylindrical boss with end face teeth on its inner surface, the cylindrical boss passing through the bracket 11 and its end face teeth being coaxial and directly opposite to the end face teeth of the balance elbow shaft 1; a return spring 8 is provided between the limiting plate 9 and the bracket 11; a Z-shaped connecting plate 4 is installed on each side of the limiting plate 9; a hydraulic cylinder 5 is installed on each Z-shaped connecting plate 4; the piston rod of the hydraulic cylinder 5 drives the connecting plate 4 and the limiting plate 9 to compress the return spring 8 or release pressure, so that the end face teeth of the balance elbow shaft 1 and the end face teeth of the cylindrical boss mesh or separate, thereby realizing suspension locking and unlocking.

[0006] Furthermore, the end face teeth of the balance elbow shaft 1 and the end face teeth of the cylindrical boss are both guide teeth.

[0007] Furthermore, a central hole is provided at the center of one end face of the bracket 11 for the cylindrical boss to pass through, and grooves are provided on both sides of the central hole, with two return springs 8 arranged in each groove.

[0008] Furthermore, the Z-shaped connecting plate 4 includes an upper horizontal support plate, a longitudinal connecting plate, and a lower horizontal support plate. A hydraulic cylinder 5 is installed on the upper horizontal support plate, and the lower horizontal support plate is connected to the bracket 11.

[0009] Furthermore, four positioning bolts 10 are used to pass through two through holes on the horizontal support plate of the two connecting plates 4, four through holes on the limiting plate 9, and the center of the four return springs 8, respectively, and are fixed to the groove of the bracket 11 by threads.

[0010] Furthermore, the piston rod of the hydraulic cylinder 5 is welded and fixed to the flange with threaded holes, and the flange is connected to the upper horizontal support plate.

[0011] Furthermore, each flange is connected to the horizontal support plate by four hexagonal fixing bolts 2.

[0012] Furthermore, an elastic washer 3 is fitted onto each fixing bolt 2.

[0013] Furthermore, each hydraulic cylinder 5 is provided with an oil inlet A and an oil inlet B. Oil enters through oil inlet A and there is no oil return through oil inlet A, so the piston rod extends. Oil enters through oil inlet B and there is oil return through oil inlet A, so the piston rod is not subjected to force.

[0014] Furthermore, the hydraulic cylinder 5 has a threaded hole in the center of the cylinder body, and a semi-circular limiting plate 6 is installed by a hexagonal bolt 7. The semi-circular limiting plate 6 is used for welding to the vehicle body.

[0015] (III) Beneficial Effects The hydraulic locking device for torsion bar suspension provided by the above technical solution has the following beneficial effects: (1) The present invention has no mechanism exposed to the vehicle body, which can prevent external dust from entering the locking mechanism and has high working reliability; (2) The hydraulic cylinders are arranged on both sides of the balance elbow shaft, with short axial length, compact structure, and less space occupied in the vehicle; (3) The present invention achieves suspension locking by driving a hydraulic cylinder. Compared with a linear motor, the locking driving force is large and the motor will not be blocked and burned out. After the hydraulic cylinder is depressurized, the reset spring realizes automatic suspension unlocking without manual operation. The locking and unlocking work is reliable. (4) The limiting plate of the present invention restricts axial rotation by means of the original vehicle body bracket, without the need to add a new limiting mechanism, and the modification is easy; (5) The present invention can simultaneously solve the problems of complex structure, high cost and poor reliability of electronic locking and mechanical locking devices such as worm gears, which require large layout space, manual operation and low transmission efficiency. Attached Figure Description

[0016] Figure 1 This is an exploded view of the locking device according to an embodiment of the present invention.

[0017] Figure 2 This is a diagram showing the locked state of an embodiment of the present invention.

[0018] Figure 3 This is an external view of the unlocked state according to an embodiment of the present invention.

[0019] Figure 4 This is a diagram of the meshing ruler according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0021] Reference Figures 1 to 4 As shown, the hydraulic locking device for torsion bar suspension in this embodiment includes a balance elbow shaft 1, a Z-shaped connecting plate 4, a hydraulic cylinder 5, a return spring 8, a limiting plate 9, and a bracket 11. A bracket 11 is provided on the outside of one end of the balance elbow shaft 1, and an end face tooth is provided at the other end. The limiting plate 9 is arranged at one end of the bracket 11, and a cylindrical boss with end face teeth is provided on its inner surface. The cylindrical boss passes through the bracket 11, and its end face teeth are coaxially aligned with the end face teeth of the balance elbow shaft 1. A return spring 8 is provided between the limiting plate 9 and the bracket 11. A Z-shaped connecting plate 4 is installed on each side of the limiting plate 9, and a hydraulic cylinder 5 is installed on each Z-shaped connecting plate 4. The piston rod of the hydraulic cylinder 5 drives the connecting plate 4 and the limiting plate 9 to compress the return spring 8 or release pressure, causing the end face teeth of the balance elbow shaft 1 to engage or disengage with the end face teeth of the cylindrical boss, thereby achieving suspension locking and unlocking.

[0022] Both the end face teeth of the balance elbow shaft 1 and the end face teeth of the cylindrical boss are guide teeth.

[0023] A central hole is provided at the center of one end face of the bracket 11 for the cylindrical boss to pass through. Grooves are provided on both sides of the central hole, and two return springs 8 are arranged in each groove.

[0024] Z-type connecting plate 4 includes an upper horizontal support plate, a longitudinal connecting plate and a lower horizontal support plate. A hydraulic cylinder 5 is installed on the upper horizontal support plate, and the lower horizontal support plate is connected to the bracket 11.

[0025] Four positioning bolts 10 are used to pass through two through holes on the horizontal support plate of the two connecting plates 4, four through holes on the limiting plate 9, and the center of the four return springs 8, respectively, and are fixed to the groove of the bracket 11 by threads.

[0026] The piston rod of hydraulic cylinder 5 is welded and fixed to a flange with threaded holes, and the flange is connected to a horizontal support plate.

[0027] Each flange is connected to the horizontal support plate by four hexagonal fixing bolts 2.

[0028] An elastic washer 3 is fitted onto each fixing bolt 2.

[0029] Each hydraulic cylinder 5 is equipped with an oil inlet A and an oil inlet B. Oil enters through oil inlet A and there is no oil return through oil inlet A, so the piston rod extends. Oil enters through oil inlet B and oil returns through oil inlet A, so the piston rod is not subjected to force.

[0030] The hydraulic cylinder 5 has a threaded hole in the center of the cylinder body, and a semi-circular limiting plate 6 is installed by a hexagonal bolt 7. The semi-circular limiting plate 6 is used for welding to the vehicle body.

[0031] The assembly process of the hydraulic locking device in this embodiment is as follows: First, use four positioning bolts 10 to pass through the two through holes on the horizontal support plates of the two connecting plates 4, the four through holes on the limiting plate 9, and the center of the four return springs 8, and then fix them to the bracket 11 with threads; then use eight fixing bolts 2 to pass through the eight elastic washers 3 and the four through holes on the lower horizontal support plates of the two connecting plates 4, and then fix them to the piston end flange of the hydraulic cylinder 5 with threads; finally, use bolts 7 to pass through the through holes on the vehicle body limiting plate 6 and fix them to the housing of the hydraulic cylinder 5 with threads through the center hole.

[0032] The working process of the hydraulic locking device in this embodiment is as follows: When oil enters through port A of hydraulic cylinder 5, the piston rod of hydraulic cylinder extends, driving the connecting plate 4 and the limiting plate 9 to compress the return spring 8, so that the end face teeth of the limiting plate 9 mesh with the end face teeth of the balance elbow shaft 1, and the suspension is locked; when oil enters through port B of hydraulic cylinder 5, the piston rod of hydraulic cylinder is not under force, the return spring 8 is in a compressed state, and the limiting plate 9 and the connecting plate 4 are ejected, and the suspension is unlocked.

[0033] As can be seen from the above technical solution, the present invention utilizes a small hydraulic cylinder to extend and retract the limiting plate, so that the guide teeth on the limiting plate mesh with the guide teeth of the balance elbow shaft, thereby limiting the rotation of the balance elbow shaft and realizing the locking function of the torsion bar suspension device.

[0034] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A hydraulic locking device for a torsion bar suspension, characterized in that, The system includes a balance elbow shaft (1), a Z-shaped connecting plate (4), a hydraulic cylinder (5), a return spring (8), a limit plate (9), and a bracket (11). The balance elbow shaft (1) has a bracket (11) on one end and an end face tooth on the other end. The limit plate (9) is arranged on one end of the bracket (11) and has a cylindrical boss with end face tooth on its inner surface. The cylindrical boss passes through the bracket (11) and its end face tooth is coaxial with the end face tooth of the balance elbow shaft (1). A return spring (8) is provided between the limit plate (9) and the bracket (11). A Z-shaped connecting plate (4) is installed on each side of the limit plate (9). A hydraulic cylinder (5) is installed on each Z-shaped connecting plate (4). The piston rod of the hydraulic cylinder (5) drives the connecting plate (4) and the limit plate (9) to compress the return spring (8) or release the pressure, so that the end face tooth of the balance elbow shaft (1) and the end face tooth of the cylindrical boss mesh or separate, thereby realizing suspension locking and unlocking.

2. The hydraulic locking device for torsion bar suspension as described in claim 1, characterized in that, The end face teeth of the balance elbow shaft (1) and the end face teeth of the cylindrical boss are both guide teeth.

3. The hydraulic locking device for torsion bar suspension as described in claim 2, characterized in that, The support (11) has a central hole at the center of one end face for the cylindrical boss to pass through. Grooves are provided on both sides of the central hole, and two return springs (8) are arranged in each groove.

4. The hydraulic locking device for torsion bar suspension as described in claim 3, characterized in that, The Z-type connecting plate (4) includes an upper horizontal support plate, a longitudinal connecting plate and a lower horizontal support plate. A hydraulic cylinder (5) is installed on the upper horizontal support plate, and the lower horizontal support plate is connected to the bracket (11).

5. The hydraulic locking device for torsion bar suspension as described in claim 4, characterized in that, Four positioning bolts (10) are used to pass through the two through holes on the horizontal support plate of the two connecting plates (4), the four through holes on the limiting plate (9), and the center of the four return springs (8), and are fixed to the groove of the bracket (11) by threads.

6. The hydraulic locking device for torsion bar suspension as described in claim 5, characterized in that, The piston rod of the hydraulic cylinder (5) is welded and fixed to the flange with threaded holes, and the flange is connected to the upper horizontal support plate.

7. The hydraulic locking device for torsion bar suspension as described in claim 6, characterized in that, Each flange is connected to the horizontal support plate by four hexagonal fixing bolts (2).

8. The hydraulic locking device for torsion bar suspension as described in claim 7, characterized in that, An elastic washer (3) is fitted onto each fixing bolt (2).

9. The hydraulic locking device for torsion bar suspension as described in claim 8, characterized in that, Each hydraulic cylinder (5) is provided with an oil inlet A and an oil inlet B. Oil enters through the oil inlet A and there is no oil return through the oil inlet A, so the piston rod extends out. Oil enters through the oil inlet B and there is oil return through the oil inlet A, so the piston rod is not subjected to force.

10. The hydraulic locking device for a torsion bar suspension as described in claim 9, characterized in that, The hydraulic cylinder (5) has a threaded hole in the center of the cylinder body, and a semi-circular limiting plate (6) is installed by a hexagonal bolt (7). The semi-circular limiting plate (6) is used for welding to the vehicle body.

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