Pneumatic ladder assembly landing device

Abstract

According to the technical scheme, the pneumatic ladder assembly landing device is characterized in that the pneumatic ladder assembly landing device comprises a base, a hinged swing arm is connected to the base, a sliding arm is arranged on one side of the base, a sliding seat is connected to the sliding arm in a sliding mode, the sliding seat is hinged to the swing arm, a telescopic air cylinder is installed on the base, and the telescopic air cylinder is hinged to the swing arm. A second-section sliding arm is arranged at one end of the first-section sliding arm; and an overturning cylinder is connected between the one-section sliding arm and the swinging arm through an overturning cylinder connecting rod. The device can assist in taking down a 15-meter ladder frame in about 25 seconds, and a ladder which is about 200 jin and is 6 meters long can be put flat to the ground through a pneumatic action main power overturning and telescopic linkage device by one person; the operation is simple, and full-automatic control over stretching and overturning can be achieved only by pressing an upper button or a lower button of the pneumatic overturning device.

Description

Technical Field

[0001] The invention relates to the field of fire fighting equipment, and more particularly to a pneumatic ladder frame landing device. Background Art

[0002] Currently in the fire truck market, the placement and removal of the 15-meter ladder still relies on manual labor from the roof of the vehicle. When firefighters are fighting a fire, they have to climb onto the roof to take down the ladder, and someone else has to go down to receive the ladder. It takes four people to operate, wasting time and manpower.

[0003] For example, the Chinese patent with authorization announcement number CN114183067A discloses an electric and pneumatic combination device for a floor-standing ladder frame, comprising a base frame fixed at the upper end of a carrier, a turning frame movably installed at the right edge position of the upper end of the base frame, the upper end of the turning frame is slidably connected to the guide ladder frame, the upper end of the guide ladder frame is slidably connected to the sliding frame at the left edge position of the upper end of the guide ladder frame, and a retractable electric drive structure is installed on the right side of the lower end of the guide ladder frame, the left end of the base frame is rotatably connected to the turning arm frame and the turning arm frame is arranged at the lower end of the guide ladder frame, the left end of the turning frame is installed with a fixed part of a turning pneumatic telescopic structure, and the movable part of the turning pneumatic telescopic structure is connected to the turning arm frame. Compared with the prior art, the present invention has the following beneficial effects: first, the turning frame is rotated by utilizing the turning pneumatic telescopic structure, and then the retractable electric drive structure is utilized to make the sliding frame move along the guide ladder frame, so as to achieve the purpose of mechanically lifting or lowering the ladder frame by one person, thereby increasing the utilization rate of human resources and improving work efficiency.

[0004] The above patent has a series of advantages, but also has disadvantages, such as: it is difficult to quickly realize the operations such as flipping and unloading of the ladder frame by relying on the device. Summary of the invention

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a pneumatic ladder frame landing device to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A pneumatic ladder landing device comprises a base, a hinged swing arm is connected to the base, a sliding arm is arranged on one side of the base, a sliding seat is slidably connected to the sliding arm, the sliding seat is hinged to the swing arm, a telescopic cylinder is installed on the base, and two sliding arms are arranged at one end of the sliding arm; a flip cylinder is connected between the sliding arm and the swing arm through a flip cylinder connecting rod;

[0008] When the telescopic cylinder is activated, the sliding seat is pushed to move backward, and the two sliding arms are driven to move through the steel wire rope, and then the moving trolley is driven to move through the steel wire rope to control the movement of the ladder frame;

[0009] The second sliding arm is provided with a bracket, and the first sliding arm is provided with a sliding bracket;

[0010] When the flip cylinder is in motion, it drives the flip cylinder connecting rod to pull the swing arm on the base to flip, and forms a triangular motion with the sliding bracket; the steel wire rope that controls the flipping of the sliding seat is connected to the sliding bracket and is also connected to a section of the sliding arm.

[0011] By adopting the above technical scheme, the present invention can assist in taking down a 15-meter ladder in about 25 seconds. One person can operate a ladder weighing about 200 kilograms and 6 meters long, and the pneumatic main power flip and telescopic linkage device can be used to lay the 15-meter ladder from flat to the ground; the operation of the present invention is simple, and only the up or down button of the pneumatic flip device needs to be pressed to realize the fully automatic control of telescopic and flipping; the present invention adopts the mobile trolley 12 for the first time to drag the ladder frame, and the foot-operated locking switch conforms to the principle of human labor saving, and can be disconnected from the main ladder in about 3 seconds, saving time; during operation, when the telescopic cylinder is actuated, the sliding seat is pushed to move backward and the two-section sliding arm is driven to move by the wire rope, and then the moving trolley is driven by the wire rope to control the movement of the ladder frame; when the flip cylinder is actuated, the flip cylinder connecting rod is driven to pull the swing arm on the base to flip, and form a triangular movement with the sliding bracket; thereby, the fast unloading of the ladder frame can be realized in conjunction with the mobile trolley 12.

[0012] Preferably, when the swing arm flips and forms a triangle motion with the sliding bracket, the five-section sliding arm flips 50-60 degrees.

[0013] By adopting the above technical solution, when the swing arm flips and forms a triangular motion with the sliding bracket, the five-section sliding arm flips 50-60 degrees, which can make the movement more stable.

[0014] Preferably, the swing arm is provided with a retraction assisting spring and an expansion assisting spring.

[0015] By adopting the above technical solution, the retracting assisting spring and the deploying assisting spring can assist the swinging stability of the swing arm.

[0016] Preferably, a foot-operated locking switch is provided on the mobile trolley.

[0017] By adopting the above technical solution, the foot-operated locking switch can conveniently control the mobile trolley.

[0018] Preferably, the bracket comprises two L-shaped clamp arms.

[0019] By adopting the above technical solution, the design of the L-shaped clamp arm can assist the use of the bracket.

[0020] Preferably, a plurality of rollers are mounted on the sliding bracket.

[0021] By adopting the above technical solution, the design of the roller can assist the use of the sliding bracket.

[0022] Preferably, a pulley for assisting the steel wire rope to pass through is provided on the one section of the sliding arm.

[0023] By adopting the above technical solution, the design of the pulley can assist in the winding of the wire rope.

[0024] Preferably, a plurality of auxiliary wheels are provided on the base.

[0025] Preferably, the swing arm includes a first swing arm and a second swing arm, the first swing arm and the second swing arm are respectively in the shape of a frame, the first swing arm is hinged to the flip cylinder connecting rod, and the second swing arm is hinged to the base.

[0026] By adopting the above technical solution and the swing arm composed of the first swing arm and the second swing arm, the ladder can be turned over and dropped.

[0027] Preferably, the outer walls of the first and second sliding arms are provided with a plurality of protruding sliding rails.

[0028] In summary, the present invention mainly has the following beneficial effects:

[0029] The present invention can assist in taking down a 15-meter ladder in about 25 seconds. One person can operate a ladder weighing about 200 kilograms and 6 meters long, and the pneumatic main power flip and telescopic linkage device can be used to lay the 15-meter ladder from flat to the ground. The operation of the present invention is simple, and the full automatic control of telescopic and flipping can be achieved by only pressing the up or down button of the pneumatic flipping device. The present invention adopts the mobile trolley 12 for the first time to drag the ladder frame and the foot-operated locking switch, which conforms to the principle of human labor saving and can be disconnected from the main ladder in about 3 seconds, saving time. During operation, when the telescopic cylinder is actuated, the sliding seat is pushed to move backward and the two-section sliding arm is driven to move by the wire rope, and then the moving trolley is driven by the wire rope to control the movement of the ladder frame. When the flip cylinder is actuated, it drives the flip cylinder connecting rod to pull the swing arm on the base to flip, and forms a triangular motion with the sliding bracket. Therefore, the fast unloading of the ladder frame can be achieved in combination with the mobile trolley 12. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is one of the structural schematic diagrams of the present invention;

[0031] Figure 2 This is the second structural schematic diagram of the present invention;

[0032] Figure 3 It is the third structural schematic diagram of the present invention;

[0033] Figure 4It is the fourth structural schematic diagram of the present invention.

[0034] Figure numerals: 1. base; 2. swing arm; 3. telescopic cylinder; 4. flip cylinder; 5. first-section sliding arm; 6. second-section sliding arm; 7. bracket; 8. flip cylinder connecting rod; 9. retracting assist spring; 10. unfolding assist spring; 11. sliding seat; 12. moving trolley; 13. sliding bracket; 21. first swing arm; 22. second swing arm. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] refer to Figure 1-Figure 4 A pneumatic ladder frame landing device, a pneumatic ladder frame landing device, comprises a base 1, the base 1 is connected with an articulated swing arm 2, one side of the base 1 is provided with a sliding arm 5, the sliding arm 5 is slidably connected with a sliding seat 11, the sliding seat 11 is hinged with the swing arm 2, a telescopic cylinder 3 is installed on the base 1, one end of the sliding arm 5 is provided with a second sliding arm 6; the sliding arm 5 and the swing arm 2 are connected with a flip cylinder 4 through a flip cylinder 4 connecting rod; when the telescopic cylinder 3 is When the cylinder 3 is actuated, it pushes the sliding seat 11 to move backward and drives the two-section sliding arm 6 to move through the steel wire rope, and then drives the moving trolley 12 to move through the steel wire rope to control the movement of the ladder frame; the two-section sliding arm 6 is provided with a bracket 7, and the one-section sliding arm 5 is provided with a sliding bracket 13; when the flip cylinder 4 is actuated, it drives the flip cylinder 4 connecting rod to pull the swing arm 2 on the base 1 to flip, and form a triangular motion with the sliding bracket 13; the sliding seat 11 controls the flipping steel wire rope connected to the sliding bracket 13 and is also connected to the one-section sliding arm 5.

[0037] refer to Figure 1-Figure 4 The present invention can assist in taking down a 15-meter ladder in about 25 seconds. One person can operate a ladder weighing about 200 kilograms and 6 meters long, and the pneumatic main power flip and telescopic linkage device can be used to lay the 15-meter ladder from flat to the ground; the operation tube of the present invention is simple, and only the up or down button of the pneumatic flip device is pressed to realize the fully automatic control of telescopic and flipping; the present invention adopts the mobile trolley 12 for the first time to drag the ladder frame, and the foot-operated locking switch conforms to the principle of human labor saving, and can be disconnected from the main ladder in about 3 seconds, saving time; during operation, when the telescopic cylinder 3 is actuated, the sliding seat 11 is pushed to move backward and the two-section sliding arm 6 is driven to move by the wire rope, and then the moving trolley 12 is driven by the wire rope to control the movement of the ladder frame; when the flip cylinder 4 is actuated, the flip cylinder 4 connecting rod is driven to pull the swing arm 2 on the base 1 to flip, and form a triangular motion with the sliding bracket 13; thereby, the fast unloading of the ladder frame can be realized in conjunction with the mobile trolley 12.

[0038] refer to Figure 1-Figure 4 When the swing arm 2 is turned over to form a triangular motion with the sliding bracket 13, the five sliding arms are turned over 50-60 degrees. When the swing arm 2 is turned over to form a triangular motion with the sliding bracket 13, the five sliding arms are turned over 50-60 degrees, which can make the action more stable. The swing arm 2 is provided with a retraction assisting spring 9 and an expansion assisting spring 10, which can assist the swing stability of the swing arm 2.

[0039] refer to Figure 1-Figure 4 , wherein the mobile trolley 12 is provided with a foot-operated locking switch, which can conveniently control the mobile trolley 12; the bracket 7 includes two L-shaped clamp arms, and the design of the L-shaped clamp arms can assist the use of the bracket 7; wherein a plurality of rollers are installed on the sliding bracket 13, and the design of the rollers can assist the use of the sliding bracket 13.

[0040] refer to Figure 1-Figure 4 The sliding arm 5 is provided with a pulley for assisting the wire rope to pass through, and the design of the pulley can assist the winding of the wire rope. The base 1 is provided with a plurality of auxiliary wheels.

[0041] refer to Figure 1-Figure 4 The swing arm 2 includes a first swing arm 21 and a second swing arm 22, the first swing arm 21 and the second swing arm 22 are frame-shaped, the first swing arm 21 is hinged with the connecting rod of the flip cylinder 4, and the second swing arm 22 is hinged with the base 1. By using the swing arm 2 composed of the first swing arm 21 and the second swing arm 22, the ladder can be flipped and dropped. A plurality of protruding slide rails are arranged on the outer walls of the first and second sliding arms 5 and 6.

[0042] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A pneumatic ladder stand landing device, comprising a base (1), characterized in that: The base (1) is connected to a hinged swing arm (2); a sliding arm (5) is provided on one side of the base (1); a sliding seat (11) is slidably connected to the sliding arm (5); the sliding seat (11) is hinged to the swing arm (2); a telescopic cylinder (3) is installed on the base (1); a second sliding arm (6) is provided at one end of the sliding arm (5); a flip cylinder (4) is connected between the sliding arm (5) and the swing arm (2) via a flip cylinder connecting rod (8); When the telescopic cylinder (3) is in motion, it pushes the sliding seat (11) to move backward and drives the two-section sliding arm (6) to move through the steel wire rope, and then drives the moving trolley (12) to move through the steel wire rope to control the movement of the ladder frame; The second sliding arm (6) is provided with a bracket (7), and the first sliding arm (5) is provided with a sliding bracket (13); When the flip cylinder (4) is in motion, it drives the flip cylinder connecting rod (8) to pull the swing arm (2) on the base (1) to flip, and forms a triangular motion with the sliding bracket (13); the sliding seat (11) controls the flipping steel wire rope to connect the sliding bracket (13) and also connect a section of the sliding arm (5).

2. The pneumatic ladder landing device according to claim 1, characterized in that: When the swing arm (2) turns over to form a triangle motion with the sliding bracket (13), the five sections of the sliding arm turn over 50-60 degrees.

3. The pneumatic ladder landing device according to claim 1, characterized in that: The swing arm (2) is provided with a retraction assisting spring (9) and an expansion assisting spring (10).

4. The pneumatic ladder landing device according to claim 1, characterized in that: The mobile trolley (12) is provided with a foot-operated locking switch.

5. The pneumatic ladder landing device according to claim 1, characterized in that: The bracket (7) comprises two L-shaped clamp arms.

6. The pneumatic ladder landing device according to claim 1, characterized in that: A plurality of rollers are mounted on the sliding bracket (13).

7. The pneumatic ladder landing device according to claim 1, characterized in that: The one section of the sliding arm (5) is provided with a pulley for assisting the steel wire rope to pass through.

8. The pneumatic ladder landing device according to claim 1, characterized in that: The base (1) is provided with a plurality of auxiliary wheels.

9. The pneumatic ladder landing device according to claim 1, characterized in that: The swing arm (2) comprises a first swing arm (21) and a second swing arm (22); the first swing arm (21) and the second swing arm (22) are respectively in the shape of a frame; the first swing arm (21) is hinged to a turning cylinder connecting rod (8); and the second swing arm (22) is hinged to a base (1).

10. The pneumatic ladder landing device according to claim 1, characterized in that: The outer walls of the first sliding arm (5) and the second sliding arm (6) are provided with a plurality of protruding sliding rails.

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