Extension ladder fixing frame of fire fighting truck

Abstract

The utility model relates to an extension ladder fixing frame of a fire fighting truck, and relates to the technical field of fire fighting, the extension ladder fixing frame comprises a rotating support and a telescopic plate which are arranged on the roof of the fire fighting truck, the telescopic plate and the rotating support are rotatably arranged, and the telescopic plate and the rotating support are slidably arranged through a sliding part; the rotating support is located on the edge of the fire fighting truck roof, a driving piece used for pushing the telescopic plate to move is arranged on the fire fighting truck roof, and a rotating control piece used for controlling the supporting plate and the rotating support to rotate and controlling the telescopic plate to stretch out and draw back is arranged on the driving piece. The extension ladder has the effect of improving the disassembly convenience of the extension ladder.

Description

Technical Field

[0001] The present application relates to the field of fire fighting technology, and in particular to a ladder fixing frame for a fire truck. Background Art

[0002] Fire trucks play a role in emergency response and fire rescue in life. Therefore, fire trucks need to carry a large number of fire-fighting equipment. When performing high-altitude operations, firefighters need to use ladders, so ladders are also equipment carried by fire trucks.

[0003] In order to reduce the space occupied by the ladder in the fire truck, the ladder is usually installed on the top of the fire truck and disassembled when needed. However, when disassembling the ladder, the firefighters need to climb to the top of the fire truck, which makes the ladder inconvenient to use. Utility Model Content

[0004] In order to improve the problem of the inconvenience of removing a ladder from a fire truck, the present application provides a ladder fixing bracket for a fire truck.

[0005] The present application provides a fire truck ladder fixing frame adopting the following technical solution:

[0006] A ladder fixing frame for a fire truck comprises a rotating support and a telescopic plate arranged on the roof of the fire truck, the telescopic plate and the rotating support are rotatably arranged, the telescopic plate and the rotating support are slidably arranged through a sliding member, the rotating support is located at the edge of the roof of the fire truck, a driving member for pushing the telescopic plate to move is provided on the roof of the fire truck, and a rotating control member for controlling the rotation of the telescopic plate and the rotating support and the extension and retraction of the telescopic plate is provided on the driving member.

[0007] By adopting the above technical solution, when dismantling the ladder on the roof of the fire truck, the telescopic plate is first pushed toward the edge of the fire truck through the driving member, and the telescopic plate slides toward the edge of the fire truck under the action of the sliding member, and one side of the telescopic plate is vacated. When the weight of the vacated side of the telescopic plate is greater than that of the other side, the control member is rotated and flipped downward under the action of the telescopic plate and the ladder's own gravity, so that the ladder is moved to the side of the fire truck. At the same time, the telescopic plate is extended by rotating the control member to reduce the height of the ladder, thereby making it easier to dismantle the ladder.

[0008] In a specific possible implementation scheme, a rotating shaft is rotatably provided on the rotating support;

[0009] The sliding member comprises a sliding block arranged on the rotating shaft, and the telescopic plate is provided with a sliding groove for the sliding block to slide.

[0010] By adopting the above technical solution, the sliding block slides in the sliding groove to realize horizontal movement of the telescopic plate, and the rotation of the telescopic plate is realized by the rotating shaft.

[0011] In a specific possible implementation scheme, the driving member includes a hydraulic cylinder and a push block, wherein the push block is arranged at the piston rod end of the hydraulic cylinder, and the push block is in contact with the telescopic plate.

[0012] By adopting the above technical solution, when the telescopic plate is moved horizontally, the hydraulic cylinder is extended, the piston rod of the hydraulic cylinder pushes the push block to move, the push block contacts the telescopic plate and pushes the telescopic plate to move, thereby realizing the horizontal displacement of the ladder.

[0013] In a specific possible implementation scheme, a slot is provided on the push block, an insert block for inserting into the slot is provided on the telescopic plate, a sliding surface is provided on the insert block, and the sliding surface is slidably arranged with a slot wall.

[0014] By adopting the above technical solution, when the telescopic plate moves horizontally, the stability of the push block in pushing the telescopic plate is improved through the cooperation between the insert block and the slot, and the sliding surface and the slot wall slide to make the telescopic plate flipping more convenient.

[0015] In a specific possible implementation scheme, the rotation control member includes a reel rotatably arranged on the push block, a rope is wound around the reel, a driving motor for driving the reel to rotate is provided on the push block, and one end of the rope is connected to the telescopic plate.

[0016] By adopting the above technical solution, when the telescopic plate moves horizontally, the telescopic plate is pulled by the rope to limit the flipping of the telescopic plate. When the weight of the free side of the telescopic plate is greater than the other side, the driving motor drives the drum to release the rope, and the telescopic plate flips, thereby realizing the control of the flipping of the telescopic plate.

[0017] In a specific feasible implementation scheme, the telescopic plate includes a support plate and a sliding plate, the sliding plate is located between the support plate and the ladder, a dovetail groove is provided on the sliding plate, a dovetail block for sliding in the dovetail groove is provided on the support plate, a limiting surface is provided on the sliding plate for limiting the detachment of the support plate, and the rope is connected to the sliding plate.

[0018] By adopting the above technical solution, when the support plate flips to the side of the fire truck, the rope continues to be released, and the sliding plate continues to move downward under the action of gravity, further reducing the height of the ladder, thereby improving the convenience of disassembling the ladder. When installing the ladder, the ladder is first fixed on the sliding plate, and then the driving motor drives the drum to rotate, the drum collects the rope, and the sliding plate moves up under the pull of the rope. When the sliding plate moves to the limit surface, the sliding plate drives the support plate to move up together, and then the support plate flips to the roof of the fire truck, thereby realizing the fixation of the ladder on the roof and improving the convenience of ladder installation.

[0019] In a specific possible implementation manner, a support rod for supporting the ladder is disposed on the sliding plate, a push rod for pushing the ladder to contact the sliding plate is disposed on the support rod, and the push rod is threadedly connected to the support rod.

[0020] By adopting the above technical solution, when the ladder is installed on the sliding plate, the sliding plate is displaced to the side of the fire truck. The ladder is first hung on the support rod, and then the push rod is rotated. The push rod slides in the direction of the ladder toward the sliding plate and the ladder is pressed against the sliding plate, thereby fixing the ladder and making the fixing of the ladder more convenient.

[0021] In a specific possible implementation manner, a clamping plate is provided on the push rod, and the clamping plate is located between the ladder and the push rod.

[0022] By adopting the above technical solution, the friction force applied by the push rod to the ladder is increased by the clamping plate, so that the ladder is fixed more firmly.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When disassembling the ladder, the driving member pushes the telescopic plate toward the edge of the fire truck, and the sliding member causes one side of the telescopic plate to be vacated. Then, the control member is turned to flip the telescopic plate to the side of the fire truck, and then the control member is turned to control the extension of the telescopic plate, thereby lowering the height of the ladder, making it more convenient for firefighters to remove the ladder.

[0025] 2. When the ladder is dismantled, the push rod is rotated and moved in a direction away from the ladder, so that the ladder and the sliding plate are released from the tight relationship, thereby releasing the fixation of the ladder and improving the convenience of dismantling the ladder. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a ladder fixing frame of a fire truck according to an embodiment of the present application.

[0027] Figure 2 is along Figure 1 Section view along line AA.

[0028] Figure 3 It is an exploded view used to show the dovetail groove.

[0029] Figure 4 yes Figure 3 Enlarged view of part B in the middle.

[0030] Figure 5 It is a schematic diagram used to show the structure of the drive components.

[0031] Figure 6 yes Figure 5 Enlarged view of part C in the middle.

[0032] Figure 7 yes Figure 5 Enlarged view of part D in the middle.

[0033] Figure 8 is along Figure 5 Cross-sectional view along line EE.

[0034] Explanation of the reference numerals in the accompanying drawings: 1. roof of a fire truck; 11. rotating support; 12. telescopic plate; 121. support plate; 122. sliding plate; 123. dovetail groove; 124. dovetail block; 13. sliding rod; 2. ladder; 3. sliding member; 31. rotating shaft; 32. slider; 33. slide groove; 4. driving member; 41. hydraulic cylinder; 42. push block; 43. support table; 44. slot; 45. plug block; 46. sliding surface; 5. rotating control member; 51. driving motor; 52. reel; 53. rope; 54. fixed pulley; 55. limiting surface; 61. support rod; 62. groove; 63. push rod; 64. clamping plate. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-8 This application is described in further detail.

[0036] The embodiment of the present application discloses a ladder fixing frame of a fire truck.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A ladder fixing frame of a fire truck includes a rotating support 11 and a telescopic plate 12 arranged on a roof 1 of the fire truck. The number of the rotating supports 11 is two, and the two rotating supports 11 are arranged along the length direction of the fire truck. The two rotating supports 11 are arranged at the edge of the roof 1 of the fire truck. The telescopic plate 12 includes a supporting plate 121 and a sliding plate 122. The sliding plate 122 is located above the supporting plate 121. The ladder 2 is located on the sliding plate 122. The sliding plate 122 is provided with a dovetail groove 123. The dovetail groove 123 is arranged along the sliding plate 122. In the length direction, the support plate 121 is provided with a dovetail block 124 for sliding in the dovetail groove 123, the support plate 121 is rotated and slidably arranged with the rotating support 11 through the sliding member 3, the sliding member 3 corresponds to the rotating support 11 one by one, and a driving member 4 for pushing the ladder 2 to move toward the edge is provided on the roof 1 of the fire truck, the driving member 4 corresponds to the sliding member 3 one by one, and the driving member 4 is provided with a rotation control member 5 for controlling the rotation of the support plate 121 and the rotating support 11 and the relative sliding of the sliding plate 122 and the support plate 121.

[0038] When the ladder 2 is removed for use, the support plate 121 is first pushed toward the edge of the fire truck roof 1 through the driving member 4. The support plate 121 moves toward the edge of the fire truck under the action of the sliding member 3, and the ladder 2 moves with the support plate 121. One side of the support plate 121 is vacated. When the weight of the vacated part of the support plate 121 is greater than the other part, the rotating control member 5 controls the support plate 121 to rotate around the rotating support 11, so that the support plate 121 rotates on the side of the fire truck, and then the sliding plate 122 is controlled by the rotating control member 5 to slide downward along the support plate 121. At this time, the dovetail block 124 slides in the dovetail groove 123, thereby lowering the height of the ladder 2, making it easier for firefighters to remove the ladder 2.

[0039] Reference Figure 2 , Figure 3 and Figure 4 A limiting surface 55 is provided on the groove wall of the dovetail groove 123 for limiting the separation of the sliding plate 122 from the support plate 121. A sliding rod 13 is provided on the roof 1 of the fire truck. The sliding rod 13 corresponds to the rotating support 11 one by one. A rotating shaft 31 is rotatably provided on the rotating support 11. The sliding member 3 includes a slider 32 fixedly set on the rotating shaft 31. A sliding groove 33 for the slider 32 to slide is provided on the support plate 121, and the sliding groove 33 is arranged along the length direction of the support plate 121.

[0040] Reference Figure 5 , Figure 6 The driving member 4 includes a hydraulic cylinder 41 and a push block 42. The hydraulic cylinder 41 is fixedly arranged on the sliding rod 13. The push block 42 is fixedly arranged at the piston rod end of the hydraulic cylinder 41. The push block 42 is slidably arranged with the sliding rod 13. One side of the push block 42 extends downward and bends to form a support platform 43. A slot 44 is provided on the push block 42. An insert block 45 for inserting into the slot 44 is provided on the support plate 121. The insert block 45 is provided with a sliding surface 46 at one end inserted into the slot 44. The sliding surface 46 is a semicircular arc surface. The sliding surface 46 slides with the slot 44 groove wall. The rotating control member 5 includes a drum 52 rotatably arranged on a support platform 43, a driving motor 51 is fixedly arranged on the support platform 43, the driving motor 51 is a motor with a self-locking function, the drum 52 is coaxially fixedly arranged on the output shaft end of the driving motor 51, one end of the drum 52 is inserted into the push block 42 and rotatably arranged with the push block 42, a rope 53 is fixedly wound around the drum 52, a group of fixed pulleys 54 are rotatably arranged on the support plate 121, one end of the rope 53 passes through the group of fixed pulleys 54 and is fixedly connected to the sliding plate 122.

[0041] When the ladder 2 is removed, the hydraulic cylinder 41 is first driven to extend, and the hydraulic cylinder 41 pushes the support plate 121 to move toward the edge of the fire truck through the push block 42. At this time, the slider 32 slides along the slide groove 33. When the slider 32 slides to one end of the slide groove 33, the weight of the vacant part of the support plate 121 is greater than the other part. At this time, the reel 52 is driven to rotate by the driving motor 51, and the reel 52 releases the rope 53. The support plate 121 flips to the side of the fire truck under the action of its own gravity, and then continues to release the rope 53. The sliding plate 122 slides downward along the support plate 121 under the action of its own gravity, thereby reducing the height of the ladder 2, making it easier for firefighters to remove the ladder 2.

[0042] When installing the ladder 2, first fix the ladder 2 on the sliding plate 122, then drive the motor 51 to drive the drum 52 to rotate, the drum 52 reels the rope 53, and the rope 53 pulls the sliding plate 122 to slide upward along the support plate 121. When the dovetail block 124 slides to the limiting surface 55, the rope 53 continues to be reeled in. At this time, the sliding plate 122 pulls the support plate 121 to move upward and flip along the rotating support 11 toward the roof 1 of the fire truck. As the rope 53 is continuously pulled, the support plate 121 is placed flat on the roof 1 of the fire truck, and the plug block 45 is inserted into the slot 44, thereby realizing the fixation of the ladder 2 and improving the convenience of placing and fixing the ladder 2.

[0043] Reference Figure 5 , Figure 7 and Figure 8 A support rod 61 is provided on the sliding plate 122, and the support rod 61 is an "L"-shaped rod. The support rod 61 and the sliding plate 122 form a groove 62 for the ladder 2 to be inserted into. A push rod 63 is provided on the support rod 61, and the push rod 63 passes through the support rod 61 and is threadedly connected with the support rod 61. One end of the push rod 63 extends into the groove 62, and a clamping plate 64 is fixedly provided at the end of the push rod 63 extending into the groove 62. The cross-section of the clamping plate 64 is "L"-shaped, and the clamping plate 64 and the support rod 61 clamp the ladder 2.

[0044] When removing the ladder 2 from the sliding plate 122, first rotate the push rod 63, the push rod 63 slides in the direction away from the sliding plate 122, and the push rod 63 drives the clamping plate 64 to release the fixation of the ladder 2, so that the ladder 2 can be removed. When fixing the ladder 2, first place the ladder 2 in the groove 62, and then rotate the push rod 63, the push rod 63 drives the clamping plate 64 to squeeze the ladder 2, so that the ladder 2 and the sliding plate 122 are pressed tightly, thereby achieving the fixation of the ladder 2 and improving the convenience of fixing and removing the ladder 2 and the sliding plate 122.

[0045] The implementation principle of the ladder fixing frame of a fire truck in an embodiment of the present application is as follows: when the ladder 2 needs to be removed, the hydraulic cylinder 41 is first driven to extend, and the hydraulic cylinder 41 pushes the support plate 121 to move toward the edge of the roof 1 of the fire truck through the push block 42. At this time, the slider 32 slides in the slide groove 33. When the slider 32 slides to one end of the slide groove 33, the reel 52 is driven to rotate by the driving motor 51, and the reel 52 releases the rope 53. Under the action of its own gravity, the support plate 121 flips toward the side of the fire truck, and then the reel 52 continues to release the rope 53. The sliding plate 122 slides downward along the dovetail groove 123 under the action of its own gravity, thereby reducing the height of the ladder 2.

[0046] When fixing the ladder 2, first fix the ladder 2 on the sliding plate 122, then drive the motor 51 to drive the drum 52 to rotate to reel in the rope 53, and the rope 53 pulls the sliding plate 122 to slide upward along the support plate 121. When the sliding plate 122 slides to the limiting surface 55, the sliding plate 122 continues to be pulled, and the sliding plate 122 drives the support plate 121 to slide upward. At the same time, the support plate 121 rotates along the rotating support 11. As the rope 53 is continuously pulled, the support plate 121 is placed flat on the roof 1 of the fire truck, the plug block 45 is inserted into the slot 44, and the rope 53 tightens the support plate 121, thereby achieving the fixation of the ladder 2.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A ladder fixing frame for a fire truck, characterized in that: The invention comprises a rotating support (11) and a telescopic plate (12) arranged on the roof (1) of a fire truck, wherein the telescopic plate (12) and the rotating support (11) are rotatably arranged, the telescopic plate (12) and the rotating support (11) are slidably arranged via a sliding member (3), the rotating support (11) is located at the edge of the roof (1) of the fire truck, a driving member (4) for pushing the telescopic plate (12) to move is arranged on the roof (1) of the fire truck, and a rotating control member (5) for controlling the rotation of the telescopic plate (12) and the rotating support (11) and the telescopic movement of the telescopic plate (12) is arranged on the driving member (4).

2. A fire truck ladder fixing bracket according to claim 1, characterized in that: The rotating support (11) is rotatably provided with a rotating shaft (31); The sliding member (3) comprises a sliding block (32) arranged on the rotating shaft (31), and the telescopic plate (12) is provided with a sliding groove (33) for the sliding block (32) to slide.

3. The ladder fixing bracket for a fire truck according to claim 1, characterized in that: The driving member (4) comprises a hydraulic cylinder (41) and a push block (42). The push block (42) is arranged at the piston rod end of the hydraulic cylinder (41), and the push block (42) is in contact with the telescopic plate (12).

4. A fire truck ladder fixing bracket according to claim 3, characterized in that: The push block (42) is provided with a slot (44), the telescopic plate (12) is provided with an insert block (45) for inserting into the slot (44), the insert block (45) is provided with a sliding surface (46), and the sliding surface (46) is slidably arranged with a slot wall of the slot (44).

5. The ladder fixing bracket for a fire truck according to claim 4, characterized in that: The rotation control member (5) comprises a drum (52) rotatably arranged on the push block (42), a rope (53) is wound around the drum (52), a driving motor (51) is provided on the push block (42) for driving the drum (52) to rotate, and one end of the rope (53) is connected to the telescopic plate (12).

6. A fire truck ladder fixing bracket according to claim 5, characterized in that: The telescopic plate (12) comprises a support plate (121) and a sliding plate (122); the sliding plate (122) is located between the support plate (121) and the ladder (2); a dovetail groove (123) is provided on the sliding plate (122); a dovetail block (124) for sliding in the dovetail groove (123) is provided on the support plate (121); a limiting surface (55) for limiting the support plate (121) from detaching is provided on the sliding plate (122); and the rope (53) is connected to the sliding plate (122).

7. A fire truck ladder fixing bracket according to claim 6, characterized in that: The sliding plate (122) is provided with a support rod (61) for supporting the ladder (2), the support rod (61) is provided with a push rod (63) for pushing the ladder (2) to contact the sliding plate (122), and the push rod (63) is threadedly connected to the support rod (61).

8. The ladder fixing bracket for a fire truck according to claim 7, characterized in that: The push rod (63) is provided with a clamping plate (64), and the clamping plate (64) is located between the ladder (2) and the push rod (63).

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