CN217518594U

CN217518594U - Connecting structure of elevating fire truck working platform and fire truck ladder frame or arm support

Info

Publication number: CN217518594U
Application number: CN202221222359.XU
Authority: CN
Inventors: 李响; 康洵铭; 李国军; 邢礁
Original assignee: Shenyang Jietong Fire Truck Co ltd
Current assignee: Shenyang Jietong Fire Truck Co ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-30
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a connection structure of lift fire engine work platform and fire engine ladder frame or cantilever crane, include: work platform, ladder frame or cantilever crane, linking arm and upset drive structure, wherein, two vertical mounting panels are fixed to the below left and right symmetry at work platform's rear portion, the linking arm is two, correspond set up in the both sides of ladder frame or cantilever crane, the one end of linking arm with the tip fixed connection of ladder frame or cantilever crane, the other end with vertical mounting panel one-to-one rotates and connects, the upset drive structure is two sets of, and the one-to-one sets up in the outside of two linking arms for two vertical mounting panel upsets of synchronous drive, and then drive the work platform upset. This connection structure of elevating fire engine work platform and fire engine ladder frame or cantilever crane, rational in infrastructure, the dismouting of being convenient for can reduce the error and add up, and the security is high.

Description

Connecting structure of elevating fire truck working platform and fire truck ladder frame or arm support

Technical Field

The utility model relates to a fire engine field provides a connection structure of elevating fire engine work platform and fire engine ladder frame or cantilever crane very much.

Background

The working platform is installed on the top end of an elevating jet fire truck arm support or an aerial ladder fire truck ladder frame and used for transferring goods and personnel during emergency rescue, and the front end of the working platform is generally provided with a water cannon and an external water gap and can be used for fire extinguishing operation before rescue.

In order to avoid the situation that the visual field above the cab is shielded when the working platform is not in use, the turnover working platform is already provided in the prior art, the bottom surface of the working platform is parallel to the ground when the working platform works, and after the working platform works, the working platform is turned over by 90 degrees and is fixed above the cab of the fire engine. The overturn of the working platform can be driven by an oil cylinder, in the prior art, the oil cylinder is usually fixed on an arm support or a ladder frame, the structure is unreasonable, the arm support or the ladder frame always has a welding length of more than 10 meters, a large deformation is easily generated, an accumulated error occurs in the overturn of the working platform, and the safety is low.

Therefore, how to improve the above structure is a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a connection structure of elevating fire engine work platform and fire engine ladder frame or cantilever crane to solve current work platform and fire engine cantilever crane or ladder frame connection structure unreasonable problem.

The utility model provides a technical scheme is: elevating fire engine work platform and fire engine ladder frame or cantilever crane's connection structure includes: the turnover driving structure comprises a first support arm, a second support arm and an oil cylinder, wherein one end of the first support arm is rotationally connected with the vertical mounting plates, one end of the second support arm is rotationally connected with the connecting arm, and one end of the oil cylinder is connected with the outer side of the connecting arm, the other end of the first support arm is rotatably connected with the free end of the second support arm through a pin shaft.

Preferably, the connection structure of elevating the fire truck working platform and the fire truck ladder frame or arm support further comprises two handrails, the two handrails are correspondingly arranged on two sides of the ladder frame or arm support, one end of each handrail is hinged to the ladder frame or arm support, and the other end of each handrail is hinged to the rear portion of the working platform.

Preferably, the ladder steps are connected between the two connecting arms at intervals.

The working platform is of a frame structure, a pipeline connecting piece is arranged at the rear part of the working platform, a water cannon interface is arranged at the front end of the working platform, one end of the pipeline connecting piece is connected with a water source outlet of the fire engine, and the other end of the pipeline connecting piece is communicated with the water cannon interface through the frame structure of the working platform.

It is further preferred, work platform's rear portion bilateral symmetry sets up two collision doors, the lateral part of collision door pass through the bolt structure with work platform pegs graft, still be provided with on the linking arm with bolt structure complex unlocking structure, it is right to be used for at work platform upset in-process the bolt structure unblock, the bottom of collision door through the pivot with work platform rotates to be connected, the cover is equipped with the torsional spring in the pivot, be used for doing the collision door provides the power of backward upset, work platform's rear portion still fixedly connected with is used for preventing the collision door rolls over the dog in the work platform outside.

Further preferred, the bolt structure includes bolt, driving lever and compression spring, the bottom of driving lever with the collision door is connected and can be in the exogenic action horizontal hunting down, the bolt connect in the top of driving lever can follow the driving lever side-to-side motion, and can under compression spring's the spring action, stretch out the side frame of collision door with work platform pegs graft, unlocking structure be for set up in wedge on the linking arm, the wedge with the position of driving lever corresponds for when the backward upset of collision door, extrude gradually the driving lever overcomes compression spring's elasticity, and then drives the bolt withdrawal inside the collision door.

Further preferably, a roller is further connected to the rear portion of the crash door, and the roller corresponds to the upper top surface of the connecting arm.

The utility model provides a connection structure of elevating fire engine work platform and fire engine ladder frame or cantilever crane, the dismouting of being rational in infrastructure, being convenient for through linking arm connection work platform and cantilever crane or ladder frame, will control the hydro-cylinder of work platform upset and install on the linking arm, compare traditional drive structure, the hydro-cylinder is the isolating construction with cantilever crane or ladder frame in this application, can reduce the error and add up, improves the security.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and embodiments:

fig. 1 is a perspective view of a connection structure of a work platform of a elevating fire truck and a ladder frame or an arm support of the fire truck when the work platform is in a working state;

fig. 2 is a side view of the connection structure of the elevating fire truck work platform and the fire truck ladder or arm support provided by the present invention when the work platform is in a retracted state;

FIG. 3 is a schematic structural view of the crash door, the connecting arm and the turnover driving structure when the working platform is in a working state;

FIG. 4 is a side view of the crash door, the connecting arm, and the tumble drive mechanism with the work platform in the working position;

fig. 5 is a schematic structural view of the crash door, the connecting arm and the turnover driving structure when the working platform is in a retracted state.

Detailed Description

The invention will be further explained below with reference to specific embodiments, without limiting the invention.

As shown in fig. 1 to 5, the utility model provides a connection structure of elevating fire truck work platform and fire truck ladder or cantilever crane, include: the working platform comprises a working platform 1, a ladder frame or an arm frame 2, connecting arms 3 and a turnover driving structure 4, wherein two vertical mounting plates 11 are symmetrically fixed below the rear part of the working platform 1 in a bilateral mode, the two connecting arms 3 are correspondingly arranged on two sides of the ladder frame or the arm frame 2, one end of each connecting arm 3 is fixedly connected with the end part of the ladder frame or the arm frame 2, the other end of each connecting arm is in one-to-one correspondence rotation connection with the vertical mounting plates 11, the turnover driving structures 4 are arranged in two groups and are correspondingly arranged on the outer sides of the two connecting arms 3 one by one and used for synchronously driving the two vertical mounting plates 11 to turn over so as to drive the working platform 1 to turn over, each turnover driving structure 4 comprises a first supporting arm 41, a second supporting arm 42 and an oil cylinder 43, one end of the first supporting arm 41 is in rotation connection with the vertical mounting plates 11, and one end of the second supporting arm 42 is in rotation connection with the connecting arms 3, one end of the oil cylinder 43 is connected to the outer side of the connecting arm 3, and the other end is rotatably connected to the free ends of the first support arm 41 and the second support arm 42 through a pin.

This connection structure of elevating fire engine work platform and fire engine ladder frame or cantilever crane, connect work platform and cantilever crane or ladder frame through the linking arm, install the hydro-cylinder of controlling the work platform upset on the linking arm, compare traditional drive structure, the hydro-cylinder is the isolating construction with cantilever crane or ladder frame in this application, can reduce the error and add up, the security is improved, the dismouting work of being more convenient for simultaneously, in operation, work platform's bottom surface is parallel with ground (as shown in figure 1), after work, withdraw work platform through the 90 degrees upsets of upset drive structure drive work platform (as shown in figure 2), the upset drive process is as follows: the extension of control hydro-cylinder promotes first support arm and second support arm and rotates, and when extending to the assigned position, vertical mounting panel can reach the horizontality, promptly: the working platform is turned over by 90 degrees, and on the contrary, the oil cylinder is controlled to retract, so that the working platform can be changed from a retracting state to a working state.

As an improvement of the technical scheme, as shown in fig. 1 and 2, the connection structure of the working platform of the elevating fire truck and the ladder frame or the arm support of the fire truck further comprises two handrails 5, the two handrails 5 are correspondingly arranged on two sides of the ladder frame or the arm support 2, one end of each handrail 5 is hinged to the ladder frame or the arm support 2, the other end of each handrail 5 is hinged to the rear portion of the working platform 1, so that an effective protection effect can be achieved, the handrails are preferably in the shape shown in fig. 1, and in the process of withdrawing the working platform, the handrails can move along with the overturned working platform and are attached to the side of the working platform.

As an improvement of the technical solution, as shown in fig. 1 and 3, a rung 31 is connected between the two connecting arms 3 at an interval, and the rung 31 is connected with the rung on the ladder frame or the arm support 2, so that a person can conveniently step on the ladder frame or the arm support from the working platform through the connecting arms.

As the improvement of technical scheme, work platform 1 is frame construction, work platform 1's rear portion is provided with pipe connection 13 (as shown in fig. 3), and the front end is provided with the water cannon interface, pipe connection 13's one end and fire engine water source exit linkage, the other end pass through work platform's frame construction with water cannon interface intercommunication, in this scheme, do work platform with connecting tube simultaneously, cancelled the design of arranging water pipeline under the traditional platform, reduced work platform gross weight, save design space, overall structure is more succinct, reduces the production degree of difficulty and cost, preferably, pipe connection 13 passes through the bearing and is connected with work platform, can overturn along with work platform.

As the improvement of the technical scheme, as shown in FIG. 1 and FIG. 3 to FIG. 5, the rear bilateral symmetry of the working platform 1 is provided with two collision doors 6, the side part of each collision door 6 is inserted into the working platform through a bolt structure, the connecting arm 3 is further provided with an unlocking structure matched with the bolt structure and used for unlocking the bolt structure in the turnover process of the working platform, the bottom of each collision door 6 is rotatably connected with the working platform 1 through a rotating shaft, the rotating shaft is sleeved with a torsional spring 10 used for providing the force for the collision door 6 to turn backwards relative to the vertical mounting plate, the rear part of the working platform 1 is also fixedly connected with a stopper 12 used for preventing the collision door 6 from turning out of the outer side of the working platform, the unlocking structure of the collision door can avoid the collision door from influencing the turnover of the working platform, and timely removes the insertion of the bolt structure and the working platform, in addition, the plug pin structure can be accurately plugged with the working platform again in the process that the working platform is overturned from the withdrawing state to the working state.

As an improvement of the technical solution, as shown in fig. 3 and 5, the latch structure includes a latch 71, a shift lever 72 and a compression spring 73, the bottom of the shift lever 72 is connected to the collision door 6 and can swing left and right under the action of an external force, the latch 71 is connected to the top of the shift lever 72, can move left and right along with the shift lever 72, and can extend out of the side frame of the collision door 6 to be inserted into the working platform under the action of the elastic force of the compression spring 73, as shown in fig. 3 to 5, the unlocking structure is a wedge block 8 disposed on the connecting arm 3, and the wedge block 8 corresponds to the shift lever 72 in position, and is used for gradually pressing the shift lever 72 when the collision door 6 is turned over backwards, overcoming the elastic force of the compression spring 73, and further driving the latch 71 to retract into the collision door 6.

As an improvement of the technical scheme, as shown in fig. 3 and 4, the rear part of the collision door 6 is further connected with a roller 9, the roller 9 corresponds to the upper top surface of the connecting arm 3, the collision door is in contact with the connecting arm through the roller, and rolling friction is generated between the collision door and the connecting arm along with the overturning of the working platform, so that the structure can be prevented from being damaged by hard friction, and the service life is prolonged.

The embodiments of the present invention are written in a progressive manner, emphasizing the differences of the various embodiments, and similar parts can be referred to each other.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. Elevating fire engine work platform and fire engine ladder frame or cantilever crane's connection structure, its characterized in that includes: the device comprises a working platform (1), a ladder frame or an arm support (2), connecting arms (3) and a turnover driving structure (4), wherein two vertical mounting plates (11) are symmetrically fixed on the lower left and right of the rear portion of the working platform (1), the number of the connecting arms (3) is two, the two connecting arms are correspondingly arranged on two sides of the ladder frame or the arm support (2), one end of each connecting arm (3) is fixedly connected with the end portion of the ladder frame or the arm support (2), the other end of each connecting arm is rotatably connected with the vertical mounting plates (11) in a one-to-one correspondence manner, the turnover driving structure (4) is divided into two groups, the two connecting arms (3) are correspondingly arranged on the outer sides of the two connecting arms (3) one by one to be used for synchronously driving the two vertical mounting plates (11) to turn over so as to drive the working platform (1) to turn over, and the turnover driving structure (4) comprises a first support arm (41), a second support arm (42) and an oil cylinder (43), the one end of first support arm (41) with vertical mounting panel (11) rotate to be connected, the one end of second support arm (42) with connecting arm (3) rotate to be connected, the one end of hydro-cylinder (43) connect in the outside of connecting arm (3), the other end with the free end of first support arm (41) and second support arm (42) is connected through the round pin axle rotation.

2. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 1, characterized in that: the novel multifunctional ladder is characterized by further comprising two handrails (5), wherein the two handrails (5) are correspondingly arranged on two sides of the ladder frame or the arm support (2), one end of each handrail (5) is hinged to the ladder frame or the arm support (2), and the other end of each handrail is hinged to the rear portion of the working platform (1).

3. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 1, characterized in that: ladder steps (31) are connected between the two connecting arms (3) at intervals.

4. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 1, characterized in that: work platform (1) is frame construction, the rear portion of work platform (1) is provided with pipeline connecting piece (13), and the front end is provided with the water cannon interface, the one end and the fire engine water source exit linkage of pipeline connecting piece (13), the other end pass through work platform's frame construction with water cannon interface intercommunication.

5. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 1, characterized in that: the rear portion bilateral symmetry of work platform (1) sets up two collision door (6), the lateral part of collision door (6) pass through the bolt structure with work platform pegs graft, still be provided with on linking arm (3) with bolt structure complex unlocking structure, it is right to be used for at work platform upset in-process the bolt structure unblock, the bottom of collision door (6) through the pivot with work platform (1) rotate to be connected, the cover is equipped with torsional spring (10) in the pivot, be used for doing collision door (6) provide the power of upset backward, the rear portion of work platform (1) still fixedly connected with is used for preventing collision door (6) are turned out dog (12) in the work platform outside.

6. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 5, characterized in that: the bolt structure includes bolt (71), driving lever (72) and compression spring (73), the bottom of driving lever (72) with collision door (6) are connected and can swing about under the exogenic action, bolt (71) connect in the top of driving lever (72), can follow driving lever (72) side-to-side movement, and can stretch out under compression spring (73) the side frame of collision door (6) with work platform pegs graft, unlocking structure be for setting up in wedge (8) on linking arm (3), wedge (8) with the position of driving lever (72) corresponds for when collision door (6) backward overturn, extrude gradually driving lever (72), overcome the elasticity of compression spring (73), and then drive bolt (71) withdrawal inside collision door (6).

7. The connection structure of the elevating fire truck work platform and the fire truck ladder or arm support of claim 5, characterized in that: the rear part of the collision door (6) is also connected with a roller (9), and the roller (9) corresponds to the upper top surface of the connecting arm (3).