Locking device for limited space of vehicle-mounted platform

Abstract

This invention discloses a locking device for use in confined spaces on a vehicle platform, comprising a locking actuator and a vehicle body shock absorber cooperating with the locking actuator. The locking actuator includes a locking guide seat, a locking block, a lead screw, a nut cooperating with the lower threaded section of the lead screw, and a secondary gear cooperating with the top shaft of the lead screw. The upper part of the lead screw is mounted on the upper part of the housing via an angular contact ball bearing. The upper end face of the locking block and the lower end face of the locking guide seat are mated and fixed as a whole in the lower part of the housing, and the locking tongue of the locking block extends out of the bottom of the housing and mates with the locking tongue hole of the vehicle body shock absorber. The threaded section of the lead screw is built into the locking guide seat, and the outer surfaces of the upper and lower ends of the nut are fixed in the locking guide seat via end face bearings. This device achieves locking of the lower surface of the equipment to the upper surface of the vehicle body shock absorber during transport and unlocking of the lower surface of the equipment to the upper surface of the vehicle body shock absorber during operation, thus achieving its intended purpose.

Description

Technical Field

[0001] This invention relates to the field of vehicle platform equipment technology, and more specifically to a locking device for use in the limited space of a vehicle platform. Background Technology

[0002] Currently, the equipment mounted on the vehicle platform needs to be leveled after arriving at its destination. During leveling, the equipment may separate from the vehicle body. However, during transportation, it is necessary to ensure a reliable connection between the equipment and the vehicle body, and this action needs to be automatically controlled.

[0003] Chinese invention patent (CN105730313) discloses an automatic locking device for a drone on a vehicle-mounted landing platform. It includes a drone, a vehicle-mounted landing platform, a screw mounting base, a screw, a through-type lead screw motor, a positioning block, a guide slide, and a guide rail mounting base. The drone lands on the vehicle-mounted landing platform. The screw mounting base is installed below the platform and connects to the screw. The through-type lead screw motor is mounted on the screw and connected to the positioning block. The guide slide is connected to the guide rail mounting base, which is also installed below the platform. Both the screw mounting base and the positioning block pass through the guide slide. This provides a convenient and quick fully automatic locking device, laying the foundation for automatic locking and positioning of drones on mobile vehicle-mounted landing platforms. However, it cannot achieve locking during transport and disengagement during operation, nor can it determine whether the locking is complete. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a locking device for the limited space of a vehicle platform, which realizes the function of locking in the transportation state and releasing in the working state.

[0005] To achieve the above objectives, the present invention provides a locking device for a limited space on a vehicle platform, comprising a locking actuator and a vehicle body shock absorber cooperating with the locking actuator; the locking actuator includes a locking guide seat, a locking block, a lead screw, a nut cooperating with the lower threaded section of the lead screw, and a secondary gear cooperating with the top shaft of the lead screw; the upper part of the lead screw is mounted on the upper part of the housing via an angular contact ball bearing, the upper end face of the locking block and the lower end face of the locking guide seat are mated and fixed as a whole in the lower part of the housing, and the locking tongue of the locking block extends out of the bottom of the housing and cooperates with the locking tongue hole of the vehicle body shock absorber; the threaded section of the lead screw is built into the locking guide seat, and the outer surfaces of the upper and lower ends of the nut are fixed in the locking guide seat via end face bearings.

[0006] Furthermore, the locking guide seat includes a guide seat cylinder, and two spiral guide grooves are opened on the outer edge surface of the guide seat cylinder. The two spiral guide grooves are arranged symmetrically. A guide pin passes through each spiral guide groove until the guide pin extends into the groove of the nut.

[0007] Furthermore, the bottom of the guide seat cylinder is provided with an annular boss, and two contact bosses are arranged on the annular boss in a symmetrical manner. A locking sensor and a disengagement sensor are installed on the housing. When the locking block moves downward to the point where the contact boss on one side of the locking guide seat touches the disengagement sensor, it stops. At this time, the locking tongue of the locking block disengages from the locking tongue hole of the vehicle body shock absorber, and the disengagement sensor provides feedback on the unlocking signal. When the locking block moves upward to the point where the contact boss on the other side of the locking guide seat touches the locking sensor, it stops. At this time, the locking tongue of the locking block is locked in the locking tongue hole of the vehicle body shock absorber, and the locking sensor provides feedback on the locking signal.

[0008] Furthermore, the two spiral guide grooves are respectively located between the two contact bosses.

[0009] Furthermore, the primary gear that meshes with the secondary gear is mounted on the output shaft of the drive mechanism.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the locking device of the present invention achieves locking between the lower surface of the equipment and the upper surface of the vehicle body shock absorber in the transportation state; and unlocking between the lower surface of the equipment and the upper surface of the vehicle body shock absorber in the working state, thus achieving the purpose of use; it realizes automation and improves the efficiency of locking / unlocking of the vehicle system equipment. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the locking device for unlocking in the limited space of a vehicle platform according to the present invention;

[0012] Figure 2 This is a schematic diagram of the locking device of the present invention for use in the limited space of a vehicle platform;

[0013] Figure 3 This is a front view of the locking actuator;

[0014] Figure 4 for Figure 3 A sectional view;

[0015] Figure 5 Rear view of the locking actuator;

[0016] Figure 6 for Figure 5 A sectional view;

[0017] Figure 7 This is a schematic diagram of the locking guide seat structure;

[0018] Figure 8 Schematic diagram for locking the guide seat;

[0019] Figure 9 This is a diagram illustrating the unlocking of the locking guide seat. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to facilitate a clearer understanding of the invention, but these descriptions do not constitute a limitation on the invention.

[0021] like Figure 1 The locking device shown is for use in the limited space of a vehicle platform. It includes a locking actuator 1 and a vehicle body shock absorber 2 that cooperates with the locking actuator 1. By energizing the locking actuator 1 and transmitting commands, the locking actuator 1 can lock or disengage from the vehicle body shock absorber 2.

[0022] Combination Figure 3 , 4 The locking actuator 1 shown in Figures 5 and 6 includes a locking guide seat 1.9, a locking block 1.10, a lead screw 1.3, a nut 1.7 that engages with the lower threaded section of the lead screw 1.3, a secondary gear 1.14 that engages with the top shaft of the lead screw 1.3, and a main gear 1.2 that meshes with the secondary gear 1.14. The main gear 1.2 is mounted on the output shaft of the drive mechanism 1.1. The upper part of the lead screw 1.3 is mounted on the upper part of the housing 1.6 via an angular contact ball bearing 1.5. The upper end face of the locking block 1.10 and the lower end face of the locking guide seat 1.9 are mated and fixed together by screws to form an integral part of the housing 1.6. The locking tongue of the locking block 1.10 extends out of the bottom of the housing 1.6 and mates with the locking tongue hole 2.1 of the vehicle body shock absorber 2. The threaded section of the lead screw 1.3 is built into the locking guide seat 9. The outer surfaces of the upper and lower ends of the lead screw nut 1.7 are fixed in the locking guide seat 1.9 via end face bearings 1.8.

[0023] like Figure 7 The locking guide seat 1.9 shown includes a guide seat cylinder 1.91 and an annular boss 1.92 located at the bottom of the guide seat cylinder 1.91. Two contact bosses 1.93 are arranged on the annular boss 1.92, and the two contact bosses 1.93 are arranged symmetrically. Two spiral guide grooves 1.94 are opened on the outer edge surface of the guide seat cylinder 1.91. The two spiral guide grooves 1.94 are arranged symmetrically and are located between the two contact bosses 1.93 respectively. A guide pin 1.11 passes through each spiral guide groove 1.94 until the guide pin 1.11 extends into the groove of the nut 1.7. Under the restriction of the guide pin 1.11, the nut 1.7 can only move up and down on the lead screw 1.3, but cannot rotate.

[0024] The driving force of the drive mechanism 1.1 is transmitted to the lead screw 1.3 through the main gear 1.2 and the secondary gear 1.14. The rotation of the lead screw 1.3 drives the lead screw nut 1.7 to move up and down. The lead screw nut 1.7 transmits the up and down movement to the locking guide seat 1.9 through the end face bearings 1.8 at both ends. This causes the locking guide seat 1.9 to rotate up and down along the spiral guide groove 1.94, thereby causing the locking block 1.10 connected to the locking guide seat 1.9 to move vertically upward and lock (the locking tongue of the locking block 1.10 is locked when it is engaged in the locking tongue hole 2.1 of the vehicle body shock absorber 2). Figure 2 (As shown) or moves vertically downwards to disengage (the locking tongue of locking block 1.10 disengages from the locking tongue hole 2.1 of the vehicle body shock absorber 2, which is unlocking, as shown) Figure 1 (As shown).

[0025] Additionally, a locking sensor 1.12 and a disengagement sensor 1.13 are installed on the housing 1.6. When the locking block 1.10 moves downwards until the contact boss 1.93 on one side of the locking guide seat 1.9 contacts the disengagement sensor 1.13 and stops, the locking tongue of the locking block 1.10 disengages from the locking tongue hole 2.1 of the vehicle body shock absorber 2. Figure 9 As shown, the unlocking signal is fed back through the release sensor 1.13; when the locking block 1.10 moves upward until the contact boss 1.93 on the other side of the locking guide seat 1.9 touches the locking sensor 1.12 and stops, at which point the locking tongue of the locking block 1.10 is locked in the locking tongue hole 2.1 of the vehicle body shock absorber 2, as shown. Figure 8 As shown, a locking signal is fed back through locking sensor 1.12. The locking device of the present invention realizes the locking of the lower surface of the equipment to the upper surface of the vehicle body shock absorber in the transportation state; and the unlocking of the lower surface of the equipment to the upper surface of the vehicle body shock absorber in the working state, thus achieving the purpose of use; it realizes automation and improves the efficiency of locking / unlocking of the vehicle system equipment.

Claims

1. A locking device for a confined space on a vehicle platform, comprising a locking actuator 1 and a vehicle body shock absorber (2) cooperating with the locking actuator (1); characterized in that: The locking actuator (1) includes a locking guide seat (1.9), a locking block (1.10), a lead screw (1.3), a nut (1.7) that mates with the lower threaded section of the lead screw (1.3), and a secondary gear (1.14) that mates with the top shaft of the lead screw (1.3). The upper part of the lead screw (1.3) is mounted on the upper part of the housing (1.6) via an angular contact ball bearing (1.5), and the upper end face of the locking block (1.10) is flush with the locking guide seat. The lower end face of the seat (1.9) is fixed together as a whole and installed in the lower middle part of the housing (1.6), and the locking tongue of the locking block (1.10) extends out of the bottom of the housing (1.6) and cooperates with the locking tongue hole (2.1) of the vehicle body shock absorber (2); the threaded section of the lead screw (1.3) is built into the locking guide seat (9), and the outer sides of the upper and lower ends of the nut (1.7) are fixed in the locking guide seat (1.9) by the end face bearing (1.8); The locking guide seat (1.9) includes a guide seat cylinder (1.91), and two spiral guide grooves (1.94) are opened on the outer edge surface of the guide seat cylinder (1.91). The two spiral guide grooves (1.94) are arranged symmetrically. A guide pin (1.11) passes through each spiral guide groove (1.94) until the guide pin (1.11) extends into the groove of the nut (1.7). The bottom of the guide seat cylinder (1.91) is provided with an annular boss (1.92), and two contact bosses (1.93) are arranged on the annular boss (1.92). The two contact bosses (1.93) are arranged symmetrically. A locking sensor (1.12) and a disengagement sensor (1.13) are installed on the housing (1.6). When the locking block (1.10) moves downwards to lock the contact boss (1.93) and the disengagement sensor (1.13) on one side of the locking guide seat (1.9), When the locking block (1.10) stops after being touched, the locking tongue of the locking block (1.10) disengages from the locking tongue hole of the vehicle body shock absorber and sends an unlocking signal through the disengagement sensor (1.13); when the locking block (1.10) moves upward to the contact boss (1.93) on the other side of the locking guide seat (1.9) and touches the locking sensor (1.12), it stops. At this time, the locking tongue of the locking block (1.10) is stuck in the locking tongue hole of the vehicle body shock absorber and sends a locking signal through the locking sensor (1.12).

2. The locking device for a confined space on a vehicle platform according to claim 1, characterized in that: The two spiral guide grooves (1.94) are located between the two contact bosses (1.93).

3. The locking device for a confined space on a vehicle platform according to claim 1, characterized in that: The main gear (1.2) meshing with the secondary gear (1.14) is mounted on the output shaft of the drive mechanism (1.1).

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