Safety protection device for bomb-carrying vehicle

Abstract

The present application provides a safety protection device for a bomb hanging vehicle, the bomb hanging vehicle comprises an upper frame, a lower frame and a scissor lifting arm group; the scissor lifting arm group comprises a first lifting arm and a second lifting arm hinged to each other; one end of the first lifting arm is slidably hinged with the upper frame through a safety protection device; the safety protection device comprises a guide slide fixed on the upper frame and a slider slidably connected in the guide slide; the first lifting arm is hinged with the slider; a stop bar is provided on the groove wall of the guide slide; the stop bar is provided with a plurality of stop slots with openings facing upward along its length direction; a guide inclined surface is provided on one side of the stop slot; a connecting vertical plate is provided on the slider; a stop rod is horizontally elastically connected to the connecting vertical plate through an elastic mechanism; one end of the stop rod passes through the connecting vertical plate and is provided with an inclined surface in the same inclination direction as the guiding inclined surface. The safety protection device can ensure that the upper frame stops falling in the event of an emergency, so as to achieve the purpose of self-locking, thereby protecting the safety of the operator and the hanging objects.

Description

Technical Field

[0001] The present application relates to the technical field of special equipment, and in particular to a safety protection device for a bomb-carrying vehicle. Background Art

[0002] A bomb carrier is a special type of transport equipment used to transport aerial ammunition and load it onto aircraft. Generally, a bomb carrier only carries one missile. In addition, a bomb carrier can also carry mailboxes, pods, and external racks.

[0003] In the prior art, when the bomb hanging vehicle is in a raised state, it may suddenly and rapidly drop due to improper hanging use or mechanical failure, thereby endangering the safety of the operator and the hanging objects. Summary of the invention

[0004] The purpose of this application is to provide a safety protection device for a bomb-carrying vehicle in order to solve the above problems.

[0005] The present application provides a safety protection device for a bomb hanging vehicle, the bomb hanging vehicle comprises an upper frame, a lower frame and a scissor lifting arm group arranged between the upper frame and the lower frame; the scissor lifting arm group comprises a first lifting arm and a second lifting arm hinged to each other; one end of the first lifting arm is slidably hinged with the upper frame through a safety protection device; the safety protection device comprises a guide slide fixed on the upper frame and a slider slidably connected in the guide slide; the first lifting arm is hinged to the slider; a stop bar is provided on the groove wall of the guide slide; a plurality of stop grooves with upward openings are provided on the stop bar along its length direction; a guide inclined surface is provided on one side of the groove wall of the stop groove; a connecting vertical plate is provided on the slider; a stop rod is horizontally elastically connected to the connecting vertical plate through an elastic mechanism; one end of the stop rod passes through the connecting vertical plate and is provided with an inclined surface with the same inclination direction as the guiding inclined surface; when the scissor lifting arm group drives the upper frame to rise, the angle between the sliding direction of the slider and the guiding inclined surface is an acute angle.

[0006] According to the technical solution provided in certain embodiments of the present application, the elastic mechanism includes a guide sleeve and a compression spring; the guide sleeve is vertically connected to one side of the connecting vertical plate; the end of the stop rod away from the stop strip passes through the guide sleeve and is slidably connected to the guide sleeve through the compression spring.

[0007] According to the technical solutions provided in certain embodiments of the present application, an operating rod is connected to the rod wall of the anti-retraction rod; an operating groove is provided on the side wall of the guide sleeve; and the operating rod extends to the outside of the guide sleeve through the operating groove.

[0008] According to the technical solution provided in certain embodiments of the present application, the operating rod is vertically rotatably connected to the anti-retraction rod; an operating handle is connected to one end of the operating rod away from the anti-retraction rod; the operating groove includes a strip sliding portion arranged along the length direction of the guide sleeve and a clamping portion connected to one end of the strip sliding portion.

[0009] According to the technical solution provided in certain embodiments of the present application, the slider includes an upper bearing and a lower bearing; the upper bearing and the lower bearing are snap-fitted together to form a connecting hole; a connecting shaft is fixedly connected in the connecting hole; and the connecting shaft is rotatably connected to the first lifting arm.

[0010] According to the technical solutions provided in certain embodiments of the present application, the upper bearing shell and / or the lower bearing shell is provided with a roller which is in rolling contact with the guide groove.

[0011] According to the technical solution provided in certain embodiments of the present application, a hydraulic cylinder is installed on the lower frame; the telescopic end of the hydraulic cylinder is hinged to the first lifting arm.

[0012] According to the technical solution provided in certain embodiments of the present application, one end of the second lifting arm is hinged to the upper frame, and the other end is slidably connected to the lower frame.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows: in the safety protection device provided by the present application, during the rising process of the upper shelf, the anti-recognition rod is in close contact with the anti-recognition bar through the inclined surface under the action of the elastic mechanism, and slides along the guiding inclined surface of the anti-recognition groove wall under the action of the slider, thereby ensuring the normal rising of the upper shelf; when a sudden fault causes the upper shelf to fall rapidly, the anti-recognition rod is under the action of the slider, and then the anti-recognition rod slides in the opposite direction along the anti-recognition bar for a certain distance, and the end of the anti-recognition rod with the inclined surface is firmly stuck in the anti-recognition groove, ensuring that the upper shelf stops falling, achieving the purpose of self-locking, thereby protecting the safety of the operator and the hung objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a bomb-hanging vehicle provided in an embodiment of the present application;

[0015] Figure 2 for Figure 1 The structural schematic diagram of the enlarged part A in the middle;

[0016] Figure 3 A schematic diagram of the explosion structure of the safety protection device for a bomb-carrying vehicle provided in an embodiment of the present application;

[0017] Figure 4 A schematic diagram of the structure of the safety protection device for a bomb-hanging vehicle provided in an embodiment of the present application in a stopped state;

[0018] Figure 5A schematic diagram of the structure of the safety protection device for a bomb-hanging vehicle provided in an embodiment of the present application in a retracted state;

[0019] Figure 6 A schematic diagram of the structure of the anti-retraction rod of the safety protection device for a bomb-hanging vehicle provided in an embodiment of the present application.

[0020] The text annotations in the figure represent:

[0021] 1. Upper frame; 2. Lower frame; 3. First lifting arm; 4. Second lifting arm; 5. Guide slide; 6. Sliding block; 7. Anti-retraction strip; 8. Anti-retraction groove; 9. Connecting vertical plate; 10. Anti-retraction rod; 11. Guide sleeve; 12. Compression spring; 13. Operating rod; 14. Operating groove; 15. Operating handle; 16. Upper bearing; 17. Lower bearing; 18. Connecting shaft; 19. Roller; 20. Hydraulic cylinder. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present application, the present application is described in detail below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present application.

[0023] Please refer to Figures 1 to 5 , the present embodiment provides a safety protection device for a bomb hanging vehicle, the bomb hanging vehicle comprises an upper frame 1, a lower frame 2 and a scissor lifting arm group arranged between the upper frame 1 and the lower frame 2; the scissor lifting arm group is used to drive the upper frame 1 to rise or fall; the scissor lifting arm group comprises a first lifting arm 3 and a second lifting arm 4 which are hinged to each other; the first lifting arm 3 and the second lifting arm 4 are hinged at their respective middle parts; the lower end of the first lifting arm 3 is hinged to the left end of the lower frame, and the high end is slidably hinged to the right half of the upper frame 1 through a safety protection device; the high end of the second lifting arm 4 is hinged to the left end of the upper frame 1, and the low end is slidably hinged to the right half of the lower frame 1; a hydraulic cylinder 20 is installed on the lower frame 2, and the telescopic end of the hydraulic cylinder 20 is hinged to the first lifting arm 3, which is used to drive the first lifting arm 3 to slide along the right half of the upper frame 1, thereby driving the upper frame 1 to rise or fall.

[0024] The safety protection device comprises a guide slot 5 fixed on the upper frame 1 and a slider 6 slidably connected in the guide slot 5; the first lifting arm 3 is hinged to the slider 6; a stop bar 7 is provided on the slot wall of the guide slot 5; a plurality of stop slots 8 with openings facing upward are provided on the stop bar 7 along its length direction; it should be noted that the stop bar 7 can be a rack comprising a plurality of teeth, and the stop slot 8 is formed between adjacent teeth; a guide inclined surface is provided on one side of the slot wall of the stop slot 8, which can be understood as a cross section of the tooth being trapezoidal or triangular; a connecting vertical plate 9 is provided on the slider 6; a stop rod 10 is horizontally elastically connected to the connecting vertical plate 9 through an elastic mechanism; one end of the stop rod 10 passes through the connecting vertical plate 9 and is provided with an inclined surface in the same inclination direction as the guiding inclined surface; when the scissors lifting arm group drives the upper frame 1 to rise, the angle between the sliding direction of the slider 6 and the guiding inclined surface is an acute angle; the diameter of the stop rod 10 is slightly smaller than the size of the stop slot 8.

[0025] During the rising process of the upper shelf 1, the anti-recoil rod 10 is in close contact with the anti-recoil strip 7 by the inclined surface under the pressure of the elastic mechanism, and slides along the guiding inclined surface of the groove wall of the anti-recoil groove 8 under the action of the slider 6, thereby ensuring the normal rising of the upper shelf 1; during the rising process of the upper shelf 1, if the hanging is improperly used or encounters a mechanical failure, etc., the upper shelf 1 may fall rapidly. At this time, due to the setting of the safety protection device, the anti-recoil rod 10 slides in the opposite direction along the anti-recoil strip 7 for a certain distance under the action of the slider 6, and the end of the anti-recoil rod 10 with the inclined surface is firmly stuck in the anti-recoil groove 8. At this time, the upper shelf 1 stops falling, achieving the purpose of self-locking. Figure 4 shown.

[0026] Preferably, the elastic mechanism includes a guide sleeve 11 and a compression spring 12; the guide sleeve 11 is vertically connected to one side of the connecting vertical plate 9; the end of the stop rod 10 away from the stop strip 7 passes through the guide sleeve 11 and is slidably connected to the guide sleeve 11 through the compression spring 12, and the guide sleeve 11 guides the stop rod 10; the compression spring 12 is located in the guide sleeve 11 and is movably sleeved on the outer wall of the stop rod 10. The setting of the compression spring 12 can make the stop rod 10 fit tightly with the stop strip 7 during the rising process of the upper shelf 1; at the same time, during the abnormal descent and stop process of the upper shelf 1, it can provide a thrust for the stop rod 10 to insert into the stop groove 8.

[0027] Preferably, an operating rod 13 is connected to the rod wall of the anti-recoil rod 10; an operating groove 14 is provided on the side wall of the guide sleeve 11; and the operating rod 13 extends to the outside of the guide sleeve 11 through the operating groove 14. When an emergency occurs and causes the end of the anti-recoil rod 10 with the inclined surface to be firmly stuck in the anti-recoil groove 8, the anti-recoil rod 10 can be driven to withdraw from the anti-recoil groove 8 by pulling the operating rod 13, ensuring that the upper shelf 1 can rise and fall normally. It should be noted that the compression spring 12 can be fixed in a variety of ways, such as one end can be fixedly connected to the connecting vertical plate 9, and the other end can be fixedly connected to the end of the operating rod 13 close to the anti-recoil rod 10.

[0028] Please refer to further Figure 6 Preferably, the operating rod 13 is vertically rotatably connected to the anti-recoil rod 10; the end of the operating rod 13 away from the anti-recoil rod 10 is connected to an operating handle 15 for easy operation; the operating groove 14 includes a strip sliding portion arranged along the length direction of the guide sleeve 11 and a clamping portion connected to one end of the strip sliding portion, the strip sliding portion is perpendicular to the clamping portion and forms an approximately L-shaped structure. After self-locking due to an emergency situation, the operating rod 13 can be slid along the strip sliding portion to the open end of the clamping portion and rotated 90 degrees to make it stuck in the clamping portion. At this time, the anti-recoil rod 10 and the anti-recoil strip 7 are separated from each other, such as Figure 5 shown.

[0029] Please refer to further Figure 3 Preferably, the slider 6 includes an upper bearing 16 and a lower bearing 17; the upper bearing 16 and the lower bearing 17 are connected by bolts to form a connecting hole; a connecting shaft 18 is fixedly connected in the connecting hole; the connecting shaft 18 is rotatably connected to the first lifting arm 3.

[0030] Preferably, the upper bearing 16 and / or the lower bearing 17 are provided with a roller 19 which is in rolling contact with the guide groove 5, and the roller 19 can convert the sliding friction into rolling friction, thereby reducing the friction force during the ascent or descent of the upper frame 1.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A safety protection device for a bomb-carrying vehicle, characterized in that: The bomb hanging vehicle comprises an upper frame (1), a lower frame (2), and a scissor lifting arm group arranged between the upper frame (1) and the lower frame (2); the scissor lifting arm group comprises a first lifting arm (3) and a second lifting arm (4) which are hinged to each other; one end of the first lifting arm (3) is slidably hinged to the upper frame (1) through a safety protection device; the safety protection device comprises a guide slot (5) fixed on the upper frame (1) and a slider (6) slidably connected to the guide slot (5); the first lifting arm (3) is hinged to the slider (6); the slot wall of the guide slot (5) is A backstop bar (7) is provided; the backstop bar (7) is provided with a plurality of backstop grooves (8) with openings facing upwards along its length direction; a groove wall of one side of the backstop groove (8) is provided with a guide inclined surface; the slider (6) is provided with a connecting vertical plate (9); a backstop rod (10) is horizontally elastically connected to the connecting vertical plate (9) through an elastic mechanism; one end of the backstop rod (10) passes through the connecting vertical plate (9) and is provided with an inclined surface having the same inclination direction as the guide inclined surface; when the scissor lifting arm assembly drives the upper frame (1) to rise, the included angle between the sliding direction of the slider (6) and the guide inclined surface is an acute angle; When a sudden failure occurs and causes the upper shelf (1) to fall rapidly, the anti-recoil rod (10) slides in the reverse direction along the anti-recoil strip (7) for a certain distance under the action of the slider (6), and then the end of the anti-recoil rod (10) with the inclined surface is firmly stuck in the anti-recoil groove (8), ensuring that the upper shelf (1) stops falling; The elastic mechanism comprises a guide sleeve (11) and a compression spring (12); the guide sleeve (11) is vertically connected to one side of the connecting vertical plate (9); an end of the anti-retraction rod (10) away from the anti-retraction strip (7) passes through the guide sleeve (11) and is slidably connected to the guide sleeve (11) via the compression spring (12); An operating rod (13) is connected to the rod wall of the stop rod (10); an operating groove (14) is provided on the side wall of the guide sleeve (11); the operating rod (13) extends to the outside of the guide sleeve (11) through the operating groove (14); The operating rod (13) is vertically and rotatably connected to the anti-retraction rod (10); an end of the operating rod (13) away from the anti-retraction rod (10) is connected to an operating handle (15); the operating groove (14) comprises a strip-shaped sliding portion arranged along the length direction of the guide sleeve (11) and a clamping portion connected to one end of the strip-shaped sliding portion; One end of the second lifting arm (4) is hinged to the upper frame (1), and the other end is slidably connected to the lower frame (2).

2. The safety protection device for bomb-carrying vehicles according to claim 1 is characterized in that: The slider (6) comprises an upper bearing shell (16) and a lower bearing shell (17); the upper bearing shell (16) and the lower bearing shell (17) are buckled and connected to form a connecting hole; a connecting shaft (18) is fixedly connected in the connecting hole; and the connecting shaft (18) is rotatably connected to the first lifting arm (3).

3. The safety protection device for bomb-carrying vehicles according to claim 2 is characterized in that: The upper bearing shell (16) and / or the lower bearing shell (17) is provided with a roller (19) which is in rolling contact with the guide groove (5).

4. The safety protection device for bomb-carrying vehicles according to claim 1 is characterized in that: A hydraulic cylinder (20) is mounted on the lower frame (2); a telescopic end of the hydraulic cylinder (20) is hingedly connected to the first lifting arm (3).

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