Multi-stage lifting portal frame structure and rescue fire fighting truck

Abstract

The utility model provides a multistage lifting portal frame structure and a rescue fire fighting truck, the multistage lifting portal frame structure comprises an outer portal frame assembly, a middle portal frame and an inner portal frame assembly, the middle portal frame is in driving connection with at least one part of the outer portal frame, and the inner portal frame assembly is in driving connection with the middle portal frame. The outer door frame assembly can be driven by the outer door frame assembly to move in a reciprocating mode in the direction parallel to the outer door frame. And at least one part of the inner gantry assembly is in driving connection with the outer gantry assembly, and the inner gantry assembly can be driven by the outer gantry assembly to reciprocate in the direction parallel to the outer gantry, so that the outer gantry assembly can drive the middle gantry and the inner gantry assembly to do lifting motion. According to the multi-stage lifting portal frame structure, multi-stage lifting of the portal frame structure can be achieved through the arrangement of the outer portal frame assembly, the middle portal frame and the inner portal frame assembly, the machining and manufacturing cost is lower, installation is convenient, meanwhile, the multi-stage lifting structure is adopted, the corresponding lifting height can be provided according to needs, and operation is simpler.

Description

Technical Field

[0001] The utility model relates to the technical field of emergency rescue, and in particular to a multi-stage lifting gantry structure and a rescue fire truck. Background Art

[0002] With the occurrence of various sudden natural disasters and accidents, the role of emergency rescue vehicles is becoming more and more important, and the functional requirements for emergency rescue vehicles are also increasing. In the process of emergency rescue, it is often necessary to carry out lifting operations, which requires personnel or equipment to be raised to facilitate firefighting operations by firefighters.

[0003] In the existing equipment, aerial work is usually achieved by ladders. However, the ladders have complex structures, high installation costs, and are difficult to operate. During use, they are often unable to raise personnel or equipment to the required height in a timely manner. At the same time, for situations where the space is small and the height requirement is not high, the ladders are often not easy to operate. Therefore, the prior art lacks a lifting device that is simple to operate, low in cost, and easy to operate. Utility Model Content

[0004] The main purpose of the utility model is to provide a multi-stage lifting gantry structure and a rescue fire truck to solve the problems in the prior art.

[0005] In order to achieve the above object, according to one aspect of the utility model, a multi-stage lifting gantry structure is provided, comprising:

[0006] External mast assembly;

[0007] A middle mast, the middle mast being drivingly connected to at least a portion of the outer mast and capable of reciprocating in a direction parallel to the outer mast under the drive of the outer mast assembly;

[0008] An inner mast assembly, at least a portion of which is drivingly connected to the outer mast assembly and can reciprocate in a direction parallel to the outer mast under the drive of the outer mast assembly.

[0009] Furthermore, the outer mast assembly includes an outer mast body and a first hydraulic cylinder, wherein one end of the first hydraulic cylinder is connected to the outer mast body, and a free end of the first hydraulic cylinder is connected to the middle mast, thereby being able to drive the middle mast to move.

[0010] Furthermore, a first guide wheel is provided at the free end of the first hydraulic cylinder, and the outer mast assembly also includes a first lifting chain, one end of the first lifting chain is connected to the outer mast body, and the other end of the first lifting chain bypasses the first guide wheel and is fixedly connected to the inner mast assembly.

[0011] Furthermore, the multi-stage lifting gantry structure also includes a bearing frame, which is used to carry functional components and is connected to the inner gantry component.

[0012] Furthermore, the inner mast assembly includes an inner mast body and a second hydraulic cylinder, wherein the second hydraulic cylinder is drivingly connected to the carrier frame and can drive the carrier frame to reciprocate in a direction parallel to the inner mast body.

[0013] Furthermore, a second guide wheel is provided at the free end of the second hydraulic cylinder, and the inner mast assembly also includes a second lifting chain, one end of the second lifting chain is connected to the second hydraulic cylinder, and the other end of the first lifting chain bypasses the second guide wheel and is fixedly connected to the supporting frame.

[0014] According to another aspect of the utility model, a rescue fire truck is provided, comprising the multi-stage lifting gantry structure described in any one of the above items.

[0015] Furthermore, it also includes a frame, which is fixedly connected to the outer door frame assembly.

[0016] The multi-stage lifting gantry structure provided by the utility model adopts a multi-stage lifting structure composed of an outer gantry assembly, a middle gantry assembly and an inner gantry assembly to realize multi-stage lifting of the gantry structure. The gantry structure has lower processing and manufacturing costs and is easy to install. At the same time, the multi-stage lifting structure can provide corresponding lifting heights according to needs, and the operation is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a multi-stage lifting gantry structure according to the utility model is shown;

[0019] Figure 2 A schematic diagram of a semi-lifting state of a multi-stage lifting gantry structure according to the utility model is shown;

[0020] Figure 3 A schematic diagram of a fully lifting state of a multi-stage lifting gantry structure according to the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Outer mast assembly; 11. Outer mast body; 111. First support seat; 112. First fixing part; 12. First hydraulic cylinder; 121. First guide wheel; 13. First lifting chain; 20. Middle mast; 30. Inner mast assembly; 31. Inner mast body; 311. Second support seat; 312. Second fixing part; 32. Second hydraulic cylinder; 321. Second guide wheel; 33. Second lifting chain; 40. Carrying frame. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] In order to solve the technical problem in the prior art that there is a lack of a lifting device that is simple to operate, low in cost and easy to operate, the utility model provides a multi-stage lifting gantry structure and a rescue fire truck.

[0027] like Figures 1 to 3 As shown, the first aspect of the utility model provides a multi-stage lifting gantry structure, including an outer gantry assembly 10, a middle gantry 20 and an inner gantry assembly 30, wherein the middle gantry 20 is drivingly connected to at least a portion of the outer gantry, and can reciprocate in a direction parallel to the outer gantry under the drive of the outer gantry assembly 10; at least a portion of the inner gantry assembly 30 is drivingly connected to the outer gantry assembly 10, and can reciprocate in a direction parallel to the outer gantry under the drive of the outer gantry assembly 10, so that the middle gantry 20 and the inner gantry assembly 30 can be driven to perform lifting movements through the outer gantry assembly 10.

[0028] Specifically, the outer mast is provided with a middle mast 20 track groove and an inner mast track groove, and the inner mast assembly 30 and the middle mast 20 are respectively assembled in the inner mast track groove and the middle mast 20 track groove, so that the movement trajectory of the inner mast assembly 30 and the middle mast 20 can be limited by setting the track groove, and the inner mast assembly 30 and the middle mast 20 can also be prevented from tilting during use, thereby improving the safety during operation.

[0029] The multi-stage lifting gantry structure provided by the utility model is applied. The multi-stage lifting structure composed of the outer gantry assembly 10, the middle gantry 20 and the inner gantry assembly 30 can realize the multi-stage lifting of the gantry structure. The gantry structure has lower processing and manufacturing costs and is easy to install. At the same time, the multi-stage lifting structure can provide corresponding lifting heights according to needs, and the operation is simpler.

[0030] Furthermore, the outer mast assembly 10 includes an outer mast body 11 and a first hydraulic cylinder 12, wherein one end of the first hydraulic cylinder 12 is connected to the outer mast body 11, and the free end of the first hydraulic cylinder 12 is connected to the middle mast 20, so that the middle mast 20 can be driven to rise or fall by the first hydraulic cylinder 12; driving the middle mast 20 to rise and fall by the hydraulic cylinder is convenient to operate, low-cost, and also convenient for later maintenance of the product.

[0031] Specifically, the outer mast body 11 is a frame structure, a first support seat 111 is disposed at the lower portion of the outer mast body 11, and a fixed end of the first hydraulic cylinder 12 is disposed on the first support seat 111, so that the first hydraulic cylinder 12 is supported by the first support seat 111. Preferably, the first hydraulic cylinder 12 may be, for example, an oil cylinder, and the height of the free end of the oil cylinder extending out is controlled by controlling the pressure of the hydraulic oil, thereby controlling the height of the middle mast 20.

[0032] like Figures 2 to 3 As shown, in this embodiment, the outer mast assembly 10 also includes a first lifting chain 13, and the free end of the first hydraulic cylinder 12 is provided with a first guide wheel 121, one end of the first lifting chain 13 is connected to the outer mast body 11, and the other end of the first lifting chain 13 bypasses the first guide wheel 121 and is fixedly connected to the inner mast assembly 30.

[0033] Specifically, a first fixed portion 112 is provided on the outer mast body 11, one end of the first lifting chain 13 is connected to the first fixed portion 112, the first guide wheel 121 has a guide wheel groove, the first lifting chain 13 can slide in the guide wheel groove, the other end of the first lifting chain 13 bypasses the guide wheel groove and is fixedly connected to the inner mast assembly 30; thus, when the free end of the first hydraulic cylinder 12 rises, on the one hand, it can drive the middle mast 20 to move upward, and on the other hand, it can also drive the first guide wheel 121 located above the free end to rise, and because the first lifting chain is a rigid structure, its length cannot be changed, so that the first lifting chain can drive the inner mast assembly 30 to move upward along the track groove.

[0034] In order to load functional components such as a forklift gantry and an operating frame, the multi-stage lifting gantry structure also includes a load-bearing frame 40, which is connected to the inner gantry assembly 30. At the same time, the load-bearing frame 40 is provided with an installation interface for functional components such as a forklift gantry or an operating frame, so that it can match different functional components, and is also conducive to replacing functional components as needed during use.

[0035] Furthermore, the inner mast assembly 30 includes an inner mast body 31 and a second hydraulic cylinder 32, wherein the second hydraulic cylinder 32 is drivingly connected to the load-bearing frame 40 and can drive the load-bearing frame 40 to reciprocate in a direction parallel to the inner mast body 31. Such a structural arrangement enables the second hydraulic cylinder 32 to be drivingly connected to the load-bearing frame 40, thereby realizing the raising and lowering of the load-bearing frame 40, thereby being able to meet the requirements for different heights during the rescue process.

[0036] Specifically, the inner mast body 31 is a frame structure, a second support seat 311 is disposed at the lower portion of the inner mast body 31, and a fixed end of the second hydraulic cylinder 32 is disposed on the second support seat 311, so that the second hydraulic cylinder 32 is supported by the second support seat 311. Preferably, the second hydraulic cylinder 32 may be, for example, an oil cylinder, and the height of the free end of the oil cylinder extending out is controlled by controlling the hydraulic oil, thereby controlling the height of the carrier 40 being raised.

[0037] In order to facilitate the control of the lifting height of the load-bearing frame 40, the inner door frame assembly 30 also includes a second lifting chain 33, and the free end of the second hydraulic cylinder 32 is provided with a second guide wheel 321. One end of the second lifting chain 33 is connected to the fixed end of the second hydraulic cylinder 32, and the other end of the first lifting chain 13 bypasses the second guide wheel 321 and is fixedly connected to the load-bearing frame 40, thereby driving the load-bearing frame 40 to rise or fall through the second lifting chain 33.

[0038] Specifically, the second hydraulic cylinder 32 is provided with a second fixed portion 312, one end of the second lifting chain 33 is connected to the second fixed portion 312, the second guide wheel 321 has a guide wheel groove, the second lifting chain 33 can slide in the guide wheel groove, and the other end of the second lifting chain 33 bypasses the guide wheel groove and is fixedly connected to the supporting frame 40; thus, when the free end of the second hydraulic cylinder 32 is raised, the second guide wheel 321 located at the top end of the free end can be driven to rise, and since the second lifting chain is a rigid structure, its length cannot be changed, so that the supporting frame 40 can be driven to move upward through the second lifting chain.

[0039] During use of the multi-stage lifting gantry structure provided by the utility model, when a lower lifting height is required, the load-bearing frame 40 can be controlled to be raised by controlling the second hydraulic cylinder 32, thereby meeting the rescue height requirement; when a higher lifting height is required, the middle gantry 20 and the inner gantry assembly 30 can be controlled to be raised by controlling the first hydraulic cylinder 12, and at the same time, the load-bearing frame 40 can also be raised by controlling the second hydraulic cylinder 32, thereby meeting the higher lifting height requirement through the multi-stage lifting gantry.

[0040] Another aspect of the present invention further provides a rescue fire truck, comprising the above-mentioned multi-stage lifting gantry structure.

[0041] Furthermore, the rescue fire truck also includes a frame, and the frame is fixedly connected to the outer mast assembly 10, so as to meet the requirements of different heights during the firefighting process.

[0042] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0043] 1. It effectively solves the existing problems in the existing technology, such as complex structure of the aerial ladder, high installation cost, and difficulty in operation. During use, it is often impossible to raise personnel or equipment to the required height in time. At the same time, in the case of small space and low height requirements, the aerial ladder is often not easy to operate.

[0044] 2. Simple structure, easy installation and low processing and manufacturing cost.

[0045] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0048] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A multi-stage lifting gantry structure, characterized in that: include: External door frame assembly (10); A middle mast (20), the middle mast (20) being drivingly connected to at least a portion of the outer mast assembly and capable of reciprocating in a direction parallel to the outer mast assembly under the drive of the outer mast assembly (10); An inner mast assembly (30), at least a portion of which is drivingly connected to the outer mast assembly (10) and is capable of reciprocating in a direction parallel to the outer mast assembly under the drive of the outer mast assembly (10).

2. The multi-stage lifting gantry structure according to claim 1, characterized in that: The outer mast assembly (10) comprises an outer mast body (11) and a first hydraulic cylinder (12), wherein one end of the first hydraulic cylinder (12) is connected to the outer mast body (11), and the free end of the first hydraulic cylinder (12) is connected to the middle mast (20), thereby being able to drive the middle mast (20) to move.

3. The multi-stage lifting gantry structure according to claim 2, characterized in that: A first guide wheel (121) is provided at the free end of the first hydraulic cylinder (12), and the outer mast assembly (10) further comprises a first lifting chain (13), one end of the first lifting chain (13) is connected to the outer mast body (11), and the other end of the first lifting chain (13) bypasses the first guide wheel (121) and is fixedly connected to the inner mast assembly (30).

4. The multi-stage lifting gantry structure according to claim 3, characterized in that: The multi-stage lifting gantry structure also includes: A bearing frame (40), the bearing frame (40) being used to bear the functional components, and the bearing frame (40) being connected to the inner door frame component (30).

5. The multi-stage lifting gantry structure according to claim 4, characterized in that: The inner mast assembly (30) comprises an inner mast body (31) and a second hydraulic cylinder (32); the second hydraulic cylinder (32) is drivingly connected to the carrier frame (40) and is capable of driving the carrier frame (40) to reciprocate in a direction parallel to the inner mast body (31).

6. The multi-stage lifting gantry structure according to claim 5, characterized in that: A second guide wheel (321) is provided at the free end of the second hydraulic cylinder (32), and the inner mast assembly (30) further comprises a second lifting chain (33), one end of the second lifting chain (33) is connected to the second hydraulic cylinder (32), and the other end of the first lifting chain (13) passes around the second guide wheel (321) and is fixedly connected to the support frame (40).

7. A rescue fire truck, characterized in that: It comprises the multi-stage lifting gantry structure as described in any one of claims 1 to 6.

8. The rescue fire truck according to claim 7, characterized in that: It also comprises a vehicle frame, wherein the vehicle frame is fixedly connected to the outer door frame assembly (10).

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