CN211895912U - Gear rack synchronous lifting mechanism and rescue vehicle - Google Patents

Abstract

The utility model relates to a characteristic vehicle technical field, concretely relates to rack and pinion synchronous lifting mechanism, including two-layer platform and bottom platform, the lateral part of each side of two-layer platform all rotates and is equipped with the pivot parallel with two-layer platform upper end, the pivot is connected with two-layer platform through the mounting bracket at its both ends, the guide gear who rotates along with the pivot is all installed to the both sides of pivot; the bottom platform is located the second floor platform lower part, the middle part of bottom platform is equipped with lifts drive assembly, it is used for the drive to lift drive assembly the second floor platform goes up and down, fixed many guide rack with the meshing of a plurality of guide gear one-to-one of second floor platform lateral part that are equipped with on the platform of bottom. The rescue vehicle comprises the gear rack synchronous lifting mechanism. The utility model discloses can guarantee that whole double deck platform lifts to descend synchronous, can effectively avoid toppling when double deck platform atress is inconsistent, can effectively ensure the safety of rescue car transportation.

Description

Gear rack synchronous lifting mechanism and rescue vehicle

Technical Field

The utility model relates to a special vehicle technical field, concretely relates to synchronous lifting mechanism of rack and pinion and rescue car.

Background

The highway accident handling task is heavy, and often single accident has multiple equipment demands, and a high-efficiency rescue vehicle needs to be equipped with collision avoidance function, isolation equipment rapid placement function, speed and distance measurement function, acousto-optic warning function and the like. At present, in the field of expressway rescue in China, the equipment integration level is not enough, and one trolley cannot finish a plurality of rescue tasks; according to the requirements of fire-fighting rescue actual combat in China, equipment for highway accident handling rescue vehicles needs to be enhanced, and the fire-fighting rescue scene warning guarantee level is improved.

The water injection isolation pier is common isolation equipment for handling accident sites, but the existing rescue vehicle is provided with more equipment, so that the storage space of the isolation pier is limited; aiming at the existing rescue vehicle type, in order to place sufficient isolation piers, the applicant imagines that the isolation piers are stored into an upper layer and a lower layer, but the height of the isolation pier at the upper layer is about 2.5m away from the ground, and workers can not normally take the isolation piers, so a two-layer lifting scheme is required to be arranged. To water injection hard shoulder jacking equipment, if use the lift of single pneumatic cylinder drive second floor platform, because water injection hard shoulder gravity is big, and the complete balance that the water injection hard shoulder can not be put, make the gravity that each position of second floor platform bore can not be completely unanimous, perhaps incline and topple at lift in-process second floor platform, thereby make the rescue car probably take place danger at the transportation, so need guarantee the platform is stable not incline among the platform lift in-process, just need set up guider in addition, be the technical problem that this application further needs to be solved as to set up what kind of guider so as to satisfy rescue car service condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that exists with not enough to the aforesaid, a synchronous lifting mechanism of rack and pinion and rescue car is provided, when lifting drive assembly drive double deck platform and going up and down, two gears of double deck platform with one side lateral part are connected by a pivot, so both ends speed is the same, can realize unilateral synchronous lifting, two gears are all installed to every angle department of double deck platform in addition, because two gears on every angle highly uniform when lifting, consequently, can guarantee whole double deck platform and lift descending in step, topple when can effectively avoiding double deck platform atress inconsistent, effectively ensure the safety of rescue car transportation.

In order to realize the purpose of the utility model, the technical proposal of the utility model is that:

a gear rack synchronous lifting mechanism comprises a two-layer platform and a bottom platform, wherein a rotating shaft parallel to the upper end of the two-layer platform is rotatably arranged on the side part of each side of the two-layer platform, the rotating shaft is connected with the two-layer platform through mounting frames at two ends of the rotating shaft, and guide gears rotating along with the rotating shaft are mounted on two sides of the rotating shaft; the bottom platform is located the second floor platform lower part, the middle part of bottom platform is equipped with lifts drive assembly, it is used for the drive to lift drive assembly the second floor platform goes up and down, fixed many guide rack with the meshing of a plurality of guide gear one-to-one of second floor platform lateral part that are equipped with on the platform of bottom.

Further, in the above-mentioned rack and pinion synchronous lifting mechanism, the rotating shaft is arranged in parallel with the side of the second-layer platform.

Further, in the above-mentioned rack-and-pinion synchronous lifting mechanism, the mounting bracket is disposed at each corner of the second-tier platform, and the rotating shafts on the side portions of the adjacent edges of the second-tier platform share one mounting bracket.

Further, in the above-mentioned rack and pinion synchronous lifting mechanism, the mounting bracket is disposed at the side portion of each of the two ends of the second-tier platform.

Further, in the above-mentioned rack-and-pinion synchronous lifting mechanism, the cross section of the guide rack is set to be a groove shape, and a tooth shape is provided on a concave surface in the middle of the guide rack.

Further, in the above-mentioned rack and pinion synchronous lifting mechanism, the rotating shaft is rotatably connected to the mounting frames at both ends thereof through bearings.

Further, in the above-mentioned rack-and-pinion synchronous lifting mechanism, the lifting drive assembly is a lifting cylinder.

Further, in the gear rack synchronous lifting mechanism, the two-layer platform is rectangular, and eight guide gears are arranged on four sides of the two-layer platform.

A rescue vehicle comprises any one of the gear rack synchronous lifting mechanisms.

Furthermore, in the rescue vehicle, water injection isolation piers are placed on the bottom platform and the second-layer platform.

The utility model discloses a rack and pinion is lifting mechanism and rescue car's beneficial effect in step:

1. the utility model discloses a rack and pinion synchronous lifting mechanism, when lifting drive assembly drive double deck platform goes up and down, two gears of the same side lateral part of double deck platform are connected by a pivot, so both ends speed is the same, can realize unilateral synchronous lifting, in addition every angle department of double deck platform all installs two gears, because two gears on every angle highly unanimous when lifting, therefore can guarantee that whole double deck platform lifts and descends synchronously, can effectively avoid the toppling when the double deck platform atress is inconsistent;

2. in the gear rack synchronous lifting mechanism of the utility model, the cross section of the guide rack is arranged into a groove shape, the middle concave surface of the guide rack is provided with a tooth shape, the groove shape design can increase the rigidity of the guide rack, in addition, the edges at two sides of the guide rack of the groove shape can limit the axial movement of the guide gear, and the reliability of the operation of the lifting mechanism can be further ensured;

3. the utility model discloses a rescue car adopts two-layer platform to store the water injection hard shoulder, has increased the storage capacity, adopts the lift of rack and pinion synchronous lifting mechanism control double deck platform, makes the workman take to equip the convenience, and makes double deck platform go up and down steadily, can guarantee rescue car transportation security.

Drawings

Fig. 1 is a schematic front view of a rack-and-pinion synchronous lifting mechanism according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a left side view structure diagram of a rack and pinion synchronous lifting mechanism according to the embodiment of the present invention.

Fig. 4 is a schematic top view of a rack and pinion synchronous lifting mechanism according to an embodiment of the present invention.

Fig. 5 is an enlarged view of the portion B of fig. 4.

In the figure: the water injection isolation pier comprises a water injection isolation pier 1, a two-layer platform 2, a guide gear 3, a guide rack 4, a lifting oil cylinder 5, a bottom platform 6, a mounting frame 7 and a rotating shaft 8.

Detailed Description

The rack and pinion synchronous lifting mechanism and the rescue vehicle of the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 5, a rack and pinion synchronous lifting mechanism comprises a two-layer platform and a bottom platform, wherein a rotating shaft parallel to the upper end of the two-layer platform is rotatably arranged on each side part of the two-layer platform, the rotating shaft is connected with the two-layer platform through mounting frames at two ends of the rotating shaft, the mounting frames can be integrally arranged with the two-layer platform or separately arranged with the two-layer platform and then fixedly mounted on the two-layer platform, and guide gears rotating along with the rotating shaft are mounted on two sides of the rotating shaft; the bottom platform is positioned at the lower part of the second-layer platform, the middle part of the bottom platform is provided with a lifting driving assembly, in the embodiment, the lifting driving assembly is a lifting oil cylinder arranged at the lower part of the geometric center of the second-layer platform, in other embodiments, the lifting driving assembly can also be arranged into an electric push rod, a lead screw and the like, the lifting driving assembly is used for driving the second-layer platform to lift, and the bottom platform is fixedly provided with a plurality of guide racks which are meshed with a plurality of guide gears at the side part of the second-layer platform in a. When the lifting driving component drives the two-layer platform to lift, the two gears on the same side of the two-layer platform are connected through the rotating shaft, so that the speeds of the guide gears at the two ends are the same, unilateral synchronous lifting can be realized, in addition, the guide gears are arranged on the two sides of the rotating shaft on each side of the two-layer platform, which is equivalent to that two guide gears are arranged at the intersection position of the adjacent sides of the two-layer platform, which is equivalent to that two gears are arranged at each angle of the two-layer platform, and because the heights of the two gears on each angle are the same when lifting, the lifting and descending synchronization of the whole two-layer platform can be ensured, and the overturning when the stress of the two.

In this embodiment, preferably, the rotating shaft is arranged in parallel with the side edge of the second-layer platform, so that the distance between the two guide gears on one side of the second-layer platform and the second-layer platform is sufficiently close and equal, and the distance between the two adjacent guide gears at each corner of the second-layer platform is relatively close, thereby being capable of synchronously lifting.

In this embodiment, preferably, the mounting bracket is disposed at each corner of the two-layer platform, and the rotating shafts at the side portions of adjacent edges of the two-layer platform share one mounting bracket, so that two adjacent guide gears at each corner of the two-layer platform can be closer, and the synchronization is better, as shown in fig. 4, the mounting bracket is L-shaped, and the L-shaped mounting bracket can simultaneously support the rotating shafts at two adjacent sides. In other embodiments, the mounting frame may be disposed at both end sides of each side of the two-layer platform (not shown in the figures).

In this embodiment, preferably, as shown in fig. 5, the cross section of the guide rack is a groove shape, the concave surface in the middle of the guide rack is provided with a tooth shape, the groove shape can increase the rigidity of the guide rack, and in addition, the edges on two sides of the groove-shaped guide rack can limit the axial movement of the guide gear, so as to further ensure the reliability of the operation of the lifting mechanism

In this embodiment, preferably, the rotating shaft is rotatably connected to the mounting frames at two ends of the rotating shaft through bearings, so that the guide gear can be ensured to rotate freely.

In this embodiment, preferably, the second-layer platform is rectangular, eight guide gears are arranged on four sides of the second-layer platform, and correspondingly, eight guide racks which are meshed with the guide gears in a one-to-one correspondence manner are arranged on the bottom-layer platform. In other embodiments, the shape of the two-layer platform may also be triangular, trapezoidal, etc.

The embodiment also discloses a rescue vehicle, which comprises the gear and rack synchronous lifting mechanism described above, when the gear and rack synchronous lifting mechanism is applied to the rescue vehicle, the bottom platform is arranged on the bottom surface of the bucket of the rescue vehicle, then the lower part of the bottom platform is rotatably provided with the wheels, the bottom platform and the second-layer platform are respectively provided with the upper water injection isolation piers, and the problem of balanced lifting of double-layer storage of the water injection isolation piers can be solved.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments without departing from the concept of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a synchronous lifting mechanism of rack and pinion which characterized in that includes:

the side parts of each side of the second-layer platform are rotatably provided with rotating shafts parallel to the upper end of the second-layer platform, the rotating shafts are connected with the second-layer platform through mounting frames at two ends of the rotating shafts, and guide gears rotating along with the rotating shafts are mounted on two sides of the rotating shafts; and

the bottom platform is located on the lower portion of the second-layer platform, a lifting driving assembly is arranged in the middle of the bottom platform and used for driving the second-layer platform to lift, and a plurality of guide racks meshed with the guide gears on the side portion of the second-layer platform in a one-to-one correspondence mode are fixedly arranged on the bottom platform.

2. The rack and pinion synchronous lifting mechanism of claim 1 wherein the shaft is parallel to the side of the racking platform.

3. The rack and pinion synchronous lifting mechanism of claim 1 wherein a mounting bracket is provided at each corner of the racking platform, the shafts on the sides of adjacent sides of the racking platform sharing a single mounting bracket.

4. The rack and pinion synchronous lifting mechanism of claim 1 wherein said mounting bracket is disposed on the side of each end of the two-story platform.

5. The rack-and-pinion synchronous lifting mechanism according to claim 1, wherein the cross section of the guide rack is groove-shaped, and the middle concave surface of the guide rack is provided with a tooth form.

6. The rack and pinion synchronous lifting mechanism of claim 1 wherein the shaft is rotatably connected to the mounting brackets at both ends thereof by bearings.

7. The rack and pinion synchronous lifting mechanism of claim 1 wherein the lifting drive assembly is a lifting cylinder.

8. The rack and pinion synchronous lifting mechanism of claim 1, wherein the two-stage platform is rectangular, and eight guide gears are arranged on four sides of the two-stage platform.

9. Rescue vehicle, characterized in that it comprises a rack and pinion synchronous lifting mechanism according to any of claims 1-8.

10. The rescue vehicle of claim 9, wherein water injection isolation piers are placed on both the bottom platform and the secondary platform.

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