Rotary foot pedal structure of passenger compartment of fire fighting truck

Abstract

The utility model relates to a passenger compartment rotary type foot pedal structure of a fire fighting truck, and belongs to the technical field of fire fighting trucks, the passenger compartment rotary type foot pedal structure comprises a fire exit door, a fixed step and a telescopic step, the fixed step is arranged on the fire exit door, the fixed step is rotatably connected with a telescopic screw, the telescopic screw is in threaded connection with a telescopic sleeve, and the telescopic sleeve is connected with a connecting rod; the connecting rod is connected with the telescopic step, and the telescopic step is sleeved on the fixed step. The telescopic pedal has the advantages that the situation that the telescopic pedal rubs the ground is reduced, and the effect of protecting the telescopic pedal is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fire trucks, and in particular to a rotating step structure of a crew compartment of a fire truck. Background Art

[0002] The crew compartment of a fire truck is usually located between the cab and the compartment for carrying the liquid storage tank (the liquid storage tank is filled with water or fire extinguishing foam), and is equipped with a crew compartment door for firefighters to enter and exit. Since the vehicle chassis of the fire truck is relatively high, a stepped step is installed on the crew compartment and at the position below the door edge corresponding to the crew compartment door. The so-called stepped step refers to a step with one or more steps.

[0003] The patent with announcement number CN102951082B discloses a rotating footboard structure for a crew compartment of a fire truck, including a crew compartment, the bottom of the crew compartment has a crew compartment chassis for fixing to the chassis of the fire truck, a crew compartment door is pivotally arranged on one side of the crew compartment, the rotating footboard structure for the crew compartment includes a footboard body, the footboard body is pivotally connected to the crew compartment chassis and is connected to the crew compartment door, when the crew compartment door is closed, the footboard body is extended into the bottom of the crew compartment, and when the crew compartment door is opened, the footboard body is extended out of the bottom of the crew compartment along with the crew compartment door.

[0004] Regarding the above-mentioned related technologies, since the footboard body is designed to facilitate passengers to get off the vehicle, the footboard body is usually close to the ground. Therefore, during the driving of the fire truck, the footboard body is easily scratched against the ground, which can easily damage the foot pedal. Utility Model Content

[0005] In order to reduce the occurrence of scratches between the footboard and the ground and improve the protection of the foot pedal, the present application provides a rotating footboard structure for the crew compartment of a fire truck.

[0006] The present application provides a rotating footboard structure for a crew compartment of a fire truck, which adopts the following technical solution:

[0007] A rotating step structure for a crew compartment of a fire truck comprises a fire door, a fixed step and a telescopic step, wherein the fixed step is arranged on the fire door, a telescopic screw is rotatably connected to the fixed step, a telescopic sleeve is threadedly connected to the telescopic screw, a connecting rod is connected to the telescopic step, and the telescopic step is sleeved on the fixed step.

[0008] By adopting the above technical solution, the telescopic screw is rotated, the telescopic screw drives the telescopic sleeve to rise and fall, and the telescopic sleeve drives the connecting rod to rise and fall, thereby realizing the lifting and lowering of the telescopic step. Before closing the fire door, the telescopic step is lifted and put on the fixed step, thereby increasing the distance of the telescopic step from the ground, reducing the scratches between the footboard and the ground, and improving the protection of the footboard.

[0009] Optionally, a fixing groove is formed on the fixed step, and an abutment block is provided on the fixed step, one end of the abutment block extends into the fixing groove, and the abutment block rests on the inner wall of the fixing groove.

[0010] By adopting the above technical solution, the telescopic step can transfer part of the force to the fixed step during use, thereby reducing the bending and deformation of the connecting rod due to the force alone, thereby improving the protection of the connecting rod.

[0011] Optionally, the fire door is provided with a telescopic slot, and a connecting plate is provided on the telescopic step, and the connecting plate extends into the telescopic slot and is slidably connected to the fire door.

[0012] By adopting the above technical solution, the fixed step and the fire door are both connected to the telescopic step, which avoids the telescopic step from being cantilevered, thereby reducing the deformation of the telescopic step during use.

[0013] Optionally, a handle is provided on the telescopic screw, a plug-in slot is formed on the telescopic screw, a first plug-in block is provided on the telescopic screw, and the first plug-in block is plugged into the plug-in slot.

[0014] By adopting the above technical solution, after opening the fire door, the handle is rotated, and the first plug-in block of the handle drives the telescopic screw to rotate, thereby facilitating the user to rotate the telescopic screw.

[0015] Optionally, a clamping block for fixing the handle is provided on the fire door.

[0016] By adopting the above technical solution, it is convenient to store the handle after use.

[0017] Optionally, a rotating block is provided on the telescopic screw, an annular groove is provided on the fixed step, and the rotating block is located in the annular groove.

[0018] By adopting the above technical solution, when the telescopic screw is rotated, the rotating block rotates around the annular groove, thereby realizing the rotational connection between the telescopic screw and the fixed step.

[0019] Optionally, the annular groove extends from the top surface of the fixed step, and a second plug-in block is detachably connected to the fixed step, the second plug-in block is located in the annular groove, and the telescopic screw passes through the second plug-in block.

[0020] By adopting the above technical solution, after the second plug-in block is pulled out from the annular groove, the telescopic screw rod can be pulled out from the fixed step, thereby facilitating the maintenance of the telescopic screw rod.

[0021] Optionally, a connecting seat is provided at one end of the connecting rod away from the telescopic sleeve, and the connecting seat is connected to the telescopic step bolt.

[0022] By adopting the above technical solution, the connecting rod can be disassembled from the telescopic step, so that the telescopic sleeve can be easily replaced, lubricated and replaced.

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

[0024] 1. When the fire door is closed, the handle rotates the telescopic screw, the telescopic screw drives the telescopic sleeve to rise, the telescopic sleeve drives the connecting rod to rise, the connecting rod rises on the movable telescopic step and is sleeved on the fixed step, thereby increasing the distance between the telescopic step and the ground, reducing the possibility of the telescopic step rubbing against the ground, and improving the protection of the telescopic step;

[0025] 2. Pull the second plug-in block out of the fixed step so that the telescopic screw can be removed from the fixed step, separate the connecting seat from the telescopic step, and remove the telescopic sleeve from the telescopic step, thereby facilitating the disassembly, replacement and lubrication of the telescopic screw and telescopic sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the telescopic screw and the telescopic sleeve according to the embodiment of the present application.

[0028] Explanation of the reference numerals: 1. fire door; 11. telescopic groove; 12. clamping block; 2. fixed step; 21. fixed groove; 22. annular groove; 3. connecting plate; 4. telescopic step; 41. abutment block; 5. telescopic screw; 51. plug-in groove; 52. rotating block; 6. telescopic sleeve; 61. connecting rod; 62. connecting seat; 7. handle; 71. first plug-in block; 8. second plug-in block. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-2 This application is described in further detail.

[0030] An embodiment of the present application discloses a rotating step structure for a crew compartment of a fire truck.

[0031] like Figure 1 and Figure 2, the rotary footstep structure of the crew compartment of the fire truck includes a fire door 1. A fixed footstep 2 is connected to the bottom of the fire door 1. A telescopic groove 11 is opened in the fire door 1 and extends from the bottom of the fire door 1. A connecting plate 3 is movably connected in the fire door 1. One end of the connecting plate 3 away from the fire door 1 is connected to a telescopic footstep 4. The telescopic footstep 4 is sleeved on the fixed footstep 2. An abutting block 41 is arranged on the telescopic footstep 4. The abutting block 41 is in a U shape. A fixing groove 21 is opened on the fixed footstep 2. The fixing groove 21 is an L-shaped groove. The length of the fixing groove 21 is greater than the length of the abutting block 41. The abutting block 41 is located in the fixing groove 21 and one end of the abutting block 41 is propped against the inner wall of the fixing groove 21.

[0032] A telescopic screw rod 5 is rotatably connected to the fixed footstep 2. One end of the telescopic screw rod 5 passing through the bottom of the fixed footstep 2 is threadedly connected to a telescopic sleeve 6. The telescopic sleeve 6 is connected to a connecting rod 61. One end of the connecting rod 61 away from the telescopic sleeve 6 is provided with a connecting seat 62. The connecting seat 62 is bolted to the telescopic footstep 4. A plugging groove 51 is opened at the top of the telescopic screw rod 5. A clamping block 12 is arranged on the fire door 1. A handle 7 is clamped on the clamping block 12. A first plugging block 71 is connected to the bottom of the handle 7. The first plugging block 71 is adapted to the plugging groove.

[0033] When the fire door 1 is opened, the first plugging block 71 on the handle 7 is inserted into the plugging groove 51, and then the handle 7 is rotated. The handle 7 drives the telescopic screw rod 5 to rotate. The telescopic screw rod 5 drives the telescopic sleeve 6 to descend. The telescopic sleeve 6 drives the connecting rod 61 to descend. The connecting rod 61 drives the telescopic footstep 4 to descend, so as to facilitate the firefighters to get off the vehicle.

[0034] Before closing the fire door 1, the handle 7 is rotated in the reverse direction. The telescopic screw rod 5 drives the telescopic sleeve 6 and the telescopic footstep 4 to rise, so that the fixed footstep 2 is sleeved in the telescopic footstep 4, increasing the ground clearance of the telescopic footstep 4 and reducing the situation of rubbing between the telescopic footstep 4 and the ground, thus improving the protection of the telescopic footstep 4.

[0035] Such as Figure 1 and Figure 2 , a circular groove 22 is opened on the fixed footstep 2 and extends from the top surface of the fixed footstep 2. A rotating block 52 is arranged on the telescopic screw rod 5. The rotating block 52 is propped against the circular groove 22. A second plugging block 8 is placed in the circular groove 22. The second plugging block 8 is bolted to the fixed footstep 2. The top surface of the second plugging block 8 is flush with the top surface of the fixed footstep 2. The second plugging block 8 is located above the rotating block 52. The telescopic screw rod 5 passes through the second plugging block 8 and extends from its top surface.

[0036] When the telescopic screw 5 needs to be removed from the fixed step 2, the second plug-in block 8 is pulled out from the annular groove 22, and the telescopic screw 5 can be pulled out from the fixed step 2, and then the connecting seat 62 is separated from the telescopic step 4, thereby facilitating the disassembly, replacement and lubrication of the telescopic screw 5 and the telescopic sleeve 6.

[0037] The implementation principle of the embodiment of the present application is: when closing the fire door 1, use the handle 7 to rotate the telescopic screw 5, the telescopic screw 5 drives the telescopic sleeve 6 to rise, the telescopic sleeve 6 drives the connecting rod 61 to rise upward, the connecting rod 61 drives the telescopic step 4 to rise upward and puts the fixed step 2 inside it, thereby increasing the distance of the telescopic step 4 from the ground, reducing the possibility of the telescopic step 4 rubbing against the ground, and improving the protection of the telescopic step 4.

[0038] 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 rotating step structure for a crew compartment of a fire truck, comprising a fire door (1), characterized in that: The fire door (1) further comprises a fixed step (2) and a telescopic step (4), wherein the fixed step (2) is arranged on the fire door (1), a telescopic screw rod (5) is rotatably connected to the fixed step (2), the telescopic screw rod (5) is threadedly connected to a telescopic sleeve (6), the telescopic sleeve (6) is connected to a connecting rod (61), the connecting rod (61) is connected to the telescopic step (4), and the telescopic step (4) is sleeved on the fixed step (2).

2. The rotating step structure of the crew compartment of a fire truck according to claim 1, characterized in that: The fixed step (2) is provided with a fixed groove (21), and the fixed step (2) is provided with an abutment block (41), one end of the abutment block (41) extends into the fixed groove (21), and the abutment block (41) rests on the inner wall of the fixed groove (21).

3. The rotating step structure of the crew compartment of a fire truck according to claim 1, characterized in that: The fire door (1) is provided with a telescopic slot (11), and the telescopic step (4) is provided with a connecting plate (3), and the connecting plate (3) extends into the telescopic slot (11) and is slidably connected to the fire door (1).

4. The rotating step structure of the crew compartment of a fire truck according to claim 1, characterized in that: The telescopic screw rod (5) is provided with a handle (7), the telescopic screw rod (5) is provided with an inserting slot (51), the handle (7) is provided with a first inserting block (71), and the first inserting block (71) is inserted into the inserting slot (51).

5. The rotating step structure for the crew compartment of a fire truck according to claim 4, characterized in that: The fire door (1) is provided with a clamping block (12) for fixing the handle (7).

6. The rotating step structure of the crew compartment of a fire truck according to claim 1, characterized in that: The telescopic screw rod (5) is provided with a rotating block (52), the fixed step (2) is provided with an annular groove (22), and the rotating block (52) is located in the annular groove (22).

7. The rotating step structure of the crew compartment of a fire truck according to claim 6, characterized in that: The annular groove (22) extends from the top surface of the fixed step (2); a second plug-in block (8) is detachably connected to the fixed step (2); the second plug-in block (8) is located in the annular groove (22); and the telescopic screw (5) passes through the second plug-in block (8).

8. The rotating step structure of the crew compartment of a fire truck according to claim 1, characterized in that: A connecting seat (62) is provided at one end of the connecting rod (61) away from the telescopic sleeve (6), and the connecting seat (62) is bolted to the telescopic step (4).

Images