CN210509012U - Auxiliary ladder at tail end of aerial ladder - Google Patents

Abstract

The utility model relates to an aerial ladder terminal auxiliary ladder, which comprises an auxiliary ladder body and a buffer device; the auxiliary ladder body is connected with the aerial ladder body in a sliding manner; at least one buffer device is arranged at the bottom end of the auxiliary ladder body; the buffer device comprises a buffer part and a roller, the buffer part is arranged at the bottom end of the auxiliary ladder body, and the roller is arranged at the bottom of the buffer part and extends out of the bottom end of the auxiliary ladder body; the wheel shaft of the roller is perpendicular to the projection of the auxiliary ladder body on the ground. The utility model aims to solve the technical problem that the supplementary ladder of present aerial ladder can produce certain angle and deflect after falling down to and produce the gap between the aerial ladder body. Utility model's an usage can make supplementary ladder and aerial ladder body closely laminate more.

Description

Auxiliary ladder at tail end of aerial ladder

Technical Field

The utility model relates to an aerial ladder vehicle field, more specifically, the utility model relates to an aerial ladder terminal supplementary ladder.

Background

In the fields of high-rise rescue tasks and high-rise material handling, aerial ladder vehicles are increasingly used with high maneuverability and are also increasingly widely used.

As shown in figure 1, the tail end of a common aerial ladder is provided with an auxiliary ladder 1000, which is convenient for manual climbing or the ascending and descending of a feeding trolley. The end of the auxiliary ladder is fixed with a buffer block 1001, and the buffer block 1001 is generally made of rubber and used for buffering and damping when the auxiliary ladder falls on the ground. In-process is opened to the aerial ladder, after reaching certain angle, supplementary ladder can fall down or pull out by the manpower by gravity is automatic, because leverage at the in-process of pulling out, supplementary ladder 1000 can use aerial ladder main part 2000 end to take place the deflection of certain angle as the fulcrum, makes the top perk to supplementary ladder 1000 can not laminate aerial ladder main part 2000 completely. Is not beneficial to the overall stability of the aerial ladder and has the danger of hurting hands or causing derailment of the feeding trolley.

Therefore, a new type of aerial ladder end auxiliary ladder is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at solve the terminal supplementary ladder of current aerial ladder and easily appear the problem of top perk.

According to one aspect of the utility model, an aerial ladder tail end auxiliary ladder is provided, which comprises an auxiliary ladder body and a buffer device; the auxiliary ladder body is connected with the aerial ladder body in a sliding manner; at least one buffer device is arranged at the bottom end of the auxiliary ladder body; the buffer device comprises a buffer part and a roller, the buffer part is arranged at the bottom end of the auxiliary ladder body, and the roller is arranged at the bottom of the buffer part and extends out of the bottom end of the auxiliary ladder body; the wheel shaft of the roller is perpendicular to the projection of the auxiliary ladder body on the ground.

According to the scheme, after the auxiliary ladder falls down, the buffer device has a buffer effect, and the roller directly touches the ground to prevent the auxiliary ladder body from being damaged; because the roller contacts to the ground, the friction force between the auxiliary ladder and the ground is reduced, the lower end of the auxiliary ladder can slide for a certain distance under the action of self gravity until the auxiliary ladder body is completely attached to the aerial ladder body, so that a gap is eliminated, and the overall stability of the aerial ladder is maintained.

Preferably, the buffer devices are two and are respectively arranged at two ends of the bottom of the auxiliary ladder body.

Through this scheme, improve the supplementary ladder body and touch to the ground after stable.

Preferably, the buffer part comprises a swinging plate, a buffer block and a first buffer support plate, the middle of the swinging plate is hinged to the auxiliary ladder body, one end of the swinging plate is fixed with the buffer block, and the other end of the swinging plate is rotatably connected with the roller; the first buffering support plate is vertically fixed to the auxiliary ladder body and is matched with the buffering block in an abutting mode.

Preferably, the swinging plate is an "L" -shaped plate, and the hinge joint with the auxiliary ladder body is located at a corner of the swinging plate.

Through this scheme, be favorable to improving the reliability of bolster, prevent because of swing board and supplementary ladder body motion direction between the contained angle undersize, influence buffering effect.

Preferably, the swing plate is further provided with a second buffering support plate, the buffering block is arranged on the second buffering support plate, and the second buffering support plate and the first buffering support plate are arranged in parallel.

Through this scheme, help improving the volume of buffer block, improve buffering effect.

Preferably, through holes are formed in the first buffer support plate and the second buffer support plate, and bolts sequentially penetrate through the second buffer support plate, the buffer block and the first buffer support plate; the first buffer support plate and the second buffer support plate are both in sliding connection with the bolt.

Through this scheme, the angle of restraint swinging plate prevents to support on buffering extension board one because of rocking or the unable buffer block that makes of angle problem.

Preferably, the roller is a brake wheel.

Through this scheme, after supplementary ladder is stable, fixed roller improves the holistic stability of aerial ladder.

Preferably, the device further comprises a fixing device, wherein the fixing device comprises a cross beam and two support rods, and the support rods are respectively and vertically fixed to two ends of the cross beam; the supporting rods are connected to two sides of the bottom of the auxiliary ladder body in a sliding mode; the supporting rod is elastically connected with a pin which is perpendicular to the supporting rod through a spring, the auxiliary ladder body is provided with a pin hole which is matched with the pin, and the spring gives force for inserting the pin into the pin hole; the distance from the pin to the bottom of the support rod is larger than the vertical distance from the pin hole to the bottom of the roller.

Through this scheme, supplementary ladder is stable after, arranges fixing device in fixed position, makes the gyro wheel lift, does not contact ground to keep scaling ladder's stability.

Preferably, the auxiliary ladder body above the pin hole is provided with a pause hole, one side of the pause hole close to the pin hole is a slope, and the vertical distance from the pause hole to the bottom of the roller is greater than the distance from the pin to the bottom of the support rod.

According to the scheme, when the fixing device is not needed to be used, the fixing device is retracted, the pin is placed in the pause hole, and the fixing device is temporarily fixed to prevent the pin from falling; can be pulled out with force when in use, and is convenient to use.

Preferably, the bottom of the support rod is provided with an anti-skid gasket.

Through this scheme, improve the auxiliary ladder of aerial ladder and the frictional force on ground to further improve stability.

The utility model has the technical effects that the included angle between the auxiliary ladder body and the scaling ladder body is eliminated, so that the auxiliary ladder body is more fit; the stability of supplementary ladder body is improved.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is the structural schematic diagram of the aerial ladder in the background art of the present invention.

Fig. 2 is a schematic structural view of an aerial ladder according to a first embodiment of the present invention.

Fig. 3 is a schematic front view of an auxiliary ladder according to a first embodiment of the present invention.

Fig. 4 is a schematic structural view of a buffer device in an auxiliary ladder according to a first embodiment of the present invention.

Fig. 5 is a schematic sectional view of the structure of fig. 4 taken along direction D.

Fig. 6 is a schematic front view of an auxiliary ladder according to a second embodiment of the present invention.

Fig. 7 is a schematic view of an installation structure of a fixing device in an auxiliary ladder according to a second embodiment of the present invention.

Wherein like parts are designated by like reference numerals throughout the several views; the figures are not drawn to scale.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

< example one >

As shown in fig. 2 to 5, the aerial ladder end auxiliary ladder in the present embodiment includes an auxiliary ladder body 1100 and a buffer device 1200; the auxiliary ladder body 1100 is slidably connected with the aerial ladder body 2000; at least one buffer device 1200 is disposed at the bottom end of the auxiliary ladder body 1100; the buffer device 1200 includes a buffer member and a roller 1230, the buffer member is disposed at the bottom end of the auxiliary ladder body 1100, and the roller 1230 is disposed at the bottom of the buffer member and extends out of the bottom end of the auxiliary ladder body 1100; the axle of the roller 1230 is perpendicular to the projection of the auxiliary ladder body 1100 on the ground.

By the scheme of the embodiment, after the auxiliary ladder 1000 falls down, the buffer device 1200 plays a buffer role, and only the roller 1230 contacts with the ground directly, so that the auxiliary ladder body 1100 is prevented from being damaged; the rollers 1230 contact the ground, so that the friction force between the auxiliary ladder 1000 and the ground is reduced, the lower end of the auxiliary ladder 1000 slides for a certain distance along the arrow A under the action of the gravity of the auxiliary ladder 1000, and the upper end of the auxiliary ladder 1000 moves along the arrow B until the auxiliary ladder body 1100 is completely attached to the aerial ladder body 2000, so that gaps are eliminated, and the overall stability of the aerial ladder is maintained.

In this embodiment or other embodiments, two buffering devices 1200 are respectively disposed at two ends of the bottom of the auxiliary ladder body 1100. Improving stability after touchdown of the auxiliary ladder 1000.

In this embodiment or other embodiments, the buffer includes a swinging plate 1210, a buffer block 1220, and a buffer support plate 1212, the middle of the swinging plate 1210 is hinged to the auxiliary ladder body 1100, one end of the swinging plate 1210 fixes the buffer block 1220, and the other end is rotatably connected to the roller 1230; the first buffering plate 1212 is vertically fixed to the auxiliary ladder body 1100 and is abutted against the buffering block 1220. The fixed position of the first buffering support plate 1212 is disposed on the side blocking the rotation of the swinging plate 1210, so that the swinging plate 1210 rotates to drive the buffering block 1220 to extrude the first buffering support plate 1212, thereby achieving the buffering effect.

In this or other embodiments, the swing plate 1210 is an inverted "L" shaped plate, and the hinge to the auxiliary ladder body 1100 is located at a corner of the swing plate 1210. The connecting part is located at the upper part of the swinging plate 1210, the transverse part is used for fixing the buffer block 1220, the vertical part is used for connecting the roller 1230, and after the roller 1230 contacts the ground, the transverse part of the swinging plate 1210 drives the buffer block 1220 to move downwards to extrude the buffer support plate 1212, so that the buffer effect is achieved. This be provided with and do benefit to the reliability that improves the bolster, prevent because of the contained angle undersize between the rotation direction of swing board 1210 and the supplementary ladder body 1100 direction of motion, influence the buffering effect (for example swing board 1210 is the strip structure, supplementary ladder body 1100 direction of motion is unanimous with the extending direction of swing board 1210, then can not make it rotate along articulated department, loses the buffering effect).

In this embodiment or other embodiments, the swing plate 1210 further includes a second buffering support plate 1211, the buffering block 1220 is disposed on the second buffering support plate 1211, and the second buffering support plate 1211 is disposed in parallel with the first buffering support plate 1212. The volume of the buffer block 1220 is increased, the reliability of the buffer member is improved, and the buffering effect is improved.

In this embodiment or other embodiments, through holes (not shown) are formed in the first buffer plate 1212 and the second buffer plate 1211, and the bolt 1213 sequentially passes through the second buffer plate 1211, the buffer block 1220, and the first buffer plate 1212; the first buffer support plate 1212 and the second buffer support plate 1211 are slidably connected with the bolt 1213. The angle of the swing plate 1210 is restricted to prevent the swing plate 1210 from rotating randomly, thereby preventing the buffer block 1220 from being abutted against the first buffer support plate 1212 due to shaking or angle problems.

In this or other embodiments, the roller 1230 is a brake wheel. After the auxiliary ladder 1000 is stabilized, the rollers 1230 are fixed, and the overall stability of the aerial ladder is improved.

< example two >

As shown in fig. 6 and 7, compared with the technical solutions in the above embodiments, the end auxiliary ladder of the aerial ladder in this embodiment further includes a fixing device 1300, where the fixing device 1300 includes a cross beam 1310 and two support rods 1320, and the support rods 1320 are respectively and vertically fixed to two ends of the cross beam 1310; the supporting rods 1320 are slidably connected to two sides of the bottom of the auxiliary ladder body 1100; a pin 1330 perpendicular to the support rod 1320 is elastically connected to the support rod 1320 through a spring 1331, a pin hole 1101 matched with the pin 1330 is formed in the auxiliary ladder body 1100, and the spring 1331 gives a force for inserting the pin 1330 into the pin hole 1101; the distance from the pin 1330 to the bottom of the support rod 1320 is greater than the vertical distance from the pin hole 1101 to the bottom of the roller 1230.

With this embodiment, after the auxiliary ladder 1000 is stabilized, the fixing device 1300 is placed in a fixed position, i.e., the supporting rod 1320 is extended and the pin 1330 is fixed in the pin hole 1101, because the distance from the pin 1330 to the bottom of the supporting rod 1320 is greater than the vertical distance from the pin hole 1101 to the bottom of the roller 1230. The roller 1230 can be lifted without contacting the ground, increasing the friction force between the auxiliary ladder 1000 and the ground, thereby maintaining the stability of the aerial ladder.

In this embodiment or other embodiments, a pause hole 1102 is formed in the auxiliary ladder body 1100 above the pin hole 1101, a side of the pause hole 1102 close to the pin hole 1101 is a slope, and a vertical distance from the pause hole 1102 to the bottom of the roller 1230 is greater than a distance from the pin 1330 to the bottom of the support rod 1320.

When the auxiliary ladder 1000 is not needed to be used, the fixing device 1300 is retracted, the pin 1330 is placed in the pause hole 1102, and the fixing device 1300 is temporarily fixed to prevent falling; when the fixing device is used, the fixing device can be pulled out by force, the pin 1330 slides out of the pause hole 1102 along the slope, the temporary fixation of the fixing device 1300 can be released without pulling out the pin 1330, and the fixing device is convenient to use. After the auxiliary ladder 1000 falls down, the cross beam 1310 can be stepped by feet, meanwhile, the auxiliary ladder body 1100 is grabbed by hands to lift upwards, and after the pin 1330 leaves the pause hole 1102 and reaches the position of the pin hole 1101, the pin 1330 can be automatically inserted into the pin hole 1101 under the action of the spring 1331, so that the fixing device 1300 is fixed; the aperture of the pin bore 1101 is chamfered to facilitate insertion of the pin 1330.

In this embodiment or other embodiments, the bottom of the supporting rod 1320 is provided with a non-slip gasket 1321, and the non-slip gasket 1321 is made of rubber, for example. The friction force between the aerial ladder auxiliary ladder 1000 and the ground is improved, so that the stability of the aerial ladder is further improved.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. An aerial ladder tail end auxiliary ladder is characterized by comprising an auxiliary ladder body and a buffer device; the auxiliary ladder body is connected with the aerial ladder body in a sliding manner; at least one buffer device is arranged at the bottom end of the auxiliary ladder body; the buffer device comprises a buffer part and a roller, the buffer part is arranged at the bottom end of the auxiliary ladder body, and the roller is arranged at the bottom of the buffer part and extends out of the bottom end of the auxiliary ladder body; the wheel shaft of the roller is perpendicular to the projection of the auxiliary ladder body on the ground.

2. The auxiliary ladder as claimed in claim 1, wherein the buffer means are provided in two at both ends of the bottom of the auxiliary ladder body.

3. The auxiliary ladder of claim 2, wherein the buffer comprises a first oscillating plate, a buffer block and a first buffer support plate, the middle of the oscillating plate is hinged to the auxiliary ladder body, one end of the oscillating plate is fixed with the buffer block, and the other end of the oscillating plate is rotatably connected with the roller; the first buffering support plate is vertically fixed to the auxiliary ladder body and is matched with the buffering block in an abutting mode.

4. An auxiliary ladder as claimed in claim 3, wherein the swinging plate is an "L" shaped plate, the hinge to the auxiliary ladder body being at a corner of the swinging plate.

5. The auxiliary ladder as claimed in claim 4, wherein the swinging plate is further provided with a second buffering support plate, the buffering block is arranged on the second buffering support plate, and the second buffering support plate is arranged in parallel with the first buffering support plate.

6. The auxiliary ladder according to claim 5, wherein through holes are formed in the first buffer support plate and the second buffer support plate, and bolts sequentially penetrate through the second buffer support plate, the buffer block and the first buffer support plate; the first buffer support plate and the second buffer support plate are both in sliding connection with the bolt.

7. The auxiliary ladder of claim 6, wherein the rollers are brake wheels.

8. The auxiliary ladder of claim 2, further comprising a fixing device comprising a cross beam and two support bars, the support bars being vertically fixed to both ends of the cross beam, respectively; the supporting rods are connected to two sides of the bottom of the auxiliary ladder body in a sliding mode; the supporting rod is elastically connected with a pin which is perpendicular to the supporting rod through a spring, the auxiliary ladder body is provided with a pin hole which is matched with the pin, and the spring gives force for inserting the pin into the pin hole; the distance from the pin to the bottom of the support rod is larger than the vertical distance from the pin hole to the bottom of the roller.

9. The auxiliary ladder of claim 8, wherein a pause hole is formed in the auxiliary ladder body above the pin hole, a slope is formed on one side of the pause hole close to the pin hole, and the vertical distance from the pause hole to the bottom of the roller is larger than the distance from the pin to the bottom of the support rod.

10. The auxiliary ladder of claim 9, wherein the bottom of the support bar is provided with a non-slip gasket.

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