Climbing boom assembly and climbing rescue machine

Abstract

The present application belongs to the field of climbing rescue machinery, and discloses a climbing arm assembly and climbing rescue machinery, wherein the climbing arm assembly comprises: an arm assembly comprising a main arm and a curved arm, the tail of the curved arm being hinged to the head of the main arm; a climbing structure comprising a climbing platform and a climbing ladder, the climbing platform being connected to the head of the curved arm, the climbing ladder comprising a main arm side ladder arranged in parallel with the main arm and a curved arm side ladder arranged in parallel with the curved arm, the tail of the curved arm side ladder being hinged to the tail of the curved arm through a horizontally arranged first hinge shaft; and a first swing mechanism capable of driving the curved arm side ladder to swing up and down relative to the curved arm around the first hinge shaft. The climbing arm assembly of the present application can be used in high rescue machinery such as a climbing platform fire engine, can realize rescue of multiple floors of a building at the same time, and can also realize rapid transfer of personnel without moving the arm assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of climbing rescue machinery, in particular to a climbing arm assembly and a climbing rescue machinery. BACKGROUND

[0002] The climbing platform fire truck is a common fire-fighting equipment for high-rise fire rescue, and a side ladder mechanism is often installed on the climbing platform fire truck to facilitate climbing during rescue and improve rescue efficiency. However, the conventional climbing platform fire truck on the market can generally only rescue the residents on one floor at a time, and when rescuing trapped personnel on other floors, the working bucket and the arm assembly need to be moved. Moreover, the main arm side ladder and the curved arm side ladder are fixed on the corresponding arm assemblies and move synchronously with the extension and folding of the main arm and the curved arm, and cannot move independently. SUMMARY

[0003] In view of at least one of the above defects or deficiencies of the prior art, the present application provides a climbing arm assembly and a climbing rescue machinery, which can enable the curved arm side ladder to have an independent operation function, can implement rescue of personnel on multiple floors of a building at the same time, and can also complete the rapid transfer of personnel without moving the arm assembly.

[0004] To achieve the above-mentioned purpose, the first aspect of the present application provides a climbing arm assembly, which comprises:

[0005] an arm assembly comprising a main arm and a curved arm, the tail of the curved arm being hinged to the head of the main arm;

[0006] a climbing structure comprising a climbing platform and a climbing ladder, the climbing platform being connected to the head of the curved arm, the climbing ladder comprising a main arm side ladder arranged side by side with the main arm and a curved arm side ladder arranged side by side with the curved arm, the tail of the curved arm side ladder being hinged to the tail of the curved arm through a first hinge shaft arranged horizontally; and

[0007] a first swing mechanism capable of driving the curved arm side ladder to swing up and down relative to the curved arm about the first hinge shaft.

[0008] Optionally, the first swing mechanism is formed as a first winch mechanism arranged on the curved arm, the first winch mechanism comprising a first winding drum, a first traction rope wound on the first winding drum, and a first rotary power device in transmission connection with the first winding drum, the outer end of the first traction rope being fixedly connected with the curved arm side ladder.

[0009] Optionally, the number of the first winch mechanisms is multiple, and the multiple first winch mechanisms are sequentially and spacedly arranged along the length direction of the curved arm on the curved arm, and the outer ends of the multiple first traction ropes are sequentially and fixedly connected with the curved arm side ladder along the length direction of the curved arm side ladder.

[0010] Optionally, the curved arm side ladder comprises a plurality of curved arm side ladder units connected in series by telescopic connection from head to tail, and the climbing arm assembly comprises a plurality of first telescopic locking devices, and each of any two adjacent curved arm side ladder units is provided with a first telescopic locking device.

[0011] Optionally, the curved arm side ladder comprises a plurality of curved arm side ladder units connected in series by telescopic connection from head to tail, and the climbing arm assembly comprises a plurality of first telescopic driving mechanisms, and each of any two adjacent curved arm side ladder units is provided with a first telescopic driving mechanism.

[0012] Optionally, the tail of the main arm side ladder is hinged to the tail of the main arm through a horizontally arranged second hinge shaft, and the climbing arm assembly comprises:

[0013] A second swing mechanism capable of driving the main arm side ladder to swing up and down relative to the main arm around the second hinge shaft.

[0014] Optionally, the second swing mechanism is formed as a second winch mechanism arranged on the main arm, the second winch mechanism comprises a second winding drum, a second traction rope wound on the second winding drum, and a second rotary power device in transmission connection with the second winding drum, and the outer end of the second traction rope is fixedly connected with the main arm side ladder.

[0015] Optionally, the number of the second winch mechanisms is multiple, and the multiple second winch mechanisms are arranged in series along the length direction of the main arm on the main arm, and the outer ends of the multiple second traction ropes are fixedly connected with the main arm side ladder along the length direction of the main arm side ladder.

[0016] Optionally, the main arm side ladder comprises a plurality of main arm side ladder units connected in series by telescopic connection from head to tail, and the climbing arm assembly comprises a plurality of second telescopic locking devices, and each of any two adjacent main arm side ladder units is provided with a second telescopic locking device.

[0017] Optionally, the main arm side ladder comprises a plurality of main arm side ladder units connected in series by telescopic connection from head to tail, and the climbing arm assembly comprises a plurality of second telescopic driving mechanisms, and each of any two adjacent main arm side ladder units is provided with a second telescopic driving mechanism.

[0018] The second aspect of the present application provides a climbing rescue machine with the climbing arm assembly described above.

[0019] Generally, the whole ladder is fixed on the arm support and moves with the arm support. The curved arm side ladder in the climbing arm support assembly of the present application can move independently. When the whole arm support and climbing structure reaches a certain position and the curved arm side ladder needs to move independently, the first swing mechanism drives the curved arm side ladder to swing up and down relative to the curved arm, so that the curved arm side ladder swings to the desired position. When the curved arm side ladder does not need to move independently, the curved arm side ladder is fixed on the curved arm and moves with the curved arm. In the climbing platform fire truck and other climbing rescue machines, the climbing arm support assembly of the present application can realize simultaneous rescue of multiple floors of a building, and can also realize rapid transfer of personnel without moving the arm support.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0022] Figure 1 is a schematic view of a climbing arm support assembly in a rescue state according to an embodiment of the present application;

[0023] Figure 2 is a schematic view of a climbing arm support assembly in a rescue state according to another embodiment of the present application; Figure 1 is an enlarged view of a part of the climbing arm support assembly;

[0024] Figure 3 is a schematic view of a climbing arm support assembly in a rescue state according to another embodiment of the present application;

[0025] Explanation of reference signs:

[0026] 101 curved arm 102 main arm

[0027] 103 curved arm side ladder 104 main arm side ladder

[0028] 105 climbing platform 106 first hinge shaft

[0029] 107 first hoisting mechanism 108 first telescopic locking device

[0030] 109 second hinge shaft 110 second hoisting mechanism

[0031] 111 second telescopic locking device

[0032] 107a first traction rope 110a second traction rope DETAILED DESCRIPTION

[0033] The specific implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiments of the present application, and is not used to limit the embodiments of the present application.

[0034] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the embodiments of the present application, the orientation words such as "upper", "lower", "top", "bottom" used without the opposite description are generally used for the direction shown in the drawings or the description of the relative position relationship of the components in the vertical, perpendicular or gravity direction.

[0036] The present application will be described in detail below with reference to the accompanying drawings and in combination with exemplary embodiments.

[0037] Referring to Figure 1 and Figure 2 , the first exemplary embodiment of the present application provides a climbing arm assembly, which comprises an arm, a climbing structure and a first swing mechanism.

[0038] Specifically, the arm comprises a main arm 102 and a curved arm 101, the tail of the curved arm 101 is hinged to the head of the main arm 102, and accordingly, the curved arm 101 can swing at multiple angles relative to the main arm 102 according to actual needs to meet different operation requirements.

[0039] The climbing structure comprises a climbing platform 105 and a climbing ladder, the climbing platform 105 is connected to the head of the curved arm 101, the climbing ladder comprises a main arm side ladder 104 arranged side by side with the main arm 102 and a curved arm side ladder 103 arranged side by side with the curved arm 101, the tail of the curved arm side ladder 103 is hinged to the tail of the curved arm 101 through a horizontally arranged first hinge shaft 106, in this way, the curved arm side ladder 103 is movable, and the curved arm side ladder 103 can have different placement states according to different requirements.

[0040] The first swing mechanism can drive the curved arm side ladder 103 to swing up and down relative to the curved arm 101 around the first hinge shaft 106. In this way, the curved arm side ladder 103 can have the function of independent operation relative to the curved arm 101.

[0041] Through the above structure, the curved arm side ladder 103 can move independently, and the curved arm side ladder 103 can swing up and down relative to the curved arm 101, generally, the curved arm side ladder 103 is fixed side by side on the curved arm 101 and moves together with the curved arm 101. After the arm and the climbing structure as a whole reach a certain position, if the curved arm side ladder 103 needs to operate independently, the first swing mechanism can be used to drive the curved arm side ladder 103 to swing up and down relative to the curved arm 101, so that the curved arm side ladder 103 can be swung to the required position.

[0042] Compared with the existing climbing arm, the climbing arm assembly of the embodiment can independently move the curved arm side ladder 103, and the curved arm side ladder 103 can swing relative to the curved arm 101 according to actual needs, so that the rescue can be implemented on multiple floors of a building at the same time, and the rapid transfer of multiple people on the same floor can be completed without moving the arm, thereby improving the rescue efficiency.

[0043] For example, when the climbing arm assembly of the embodiment is applied to a climbing platform fire truck, the curved arm side ladder 103 has different application states in the face of different rescue needs:

[0044] If rescue is needed for people trapped on one floor, the curved arm side ladder 103 is generally fixed on the curved arm 101 and arranged side by side with the curved arm 101, and at this time, the curved arm side ladder 103 moves with the curved arm 101.

[0045] If rescue is needed for people trapped on multiple floors, the climbing arm is first swung to a higher floor, and in an emergency, the curved arm side ladder 103 is driven by the first swinging mechanism to swing to other floors for rescue, so that rescue can be implemented on people trapped on different floors at the same time.

[0046] In addition, since the climbing platform 105 has certain load requirements, when multiple people on the same floor need to be rescued, the climbing arm assembly of the embodiment can allow the people on the climbing platform 105 to be transferred to other safe floors through the curved arm side ladder 103, so that the transfer of people can be achieved without moving the arm, thereby improving the rescue efficiency.

[0047] In one embodiment, the first swinging mechanism is formed as a first winch mechanism 107 arranged on the curved arm 101, the first winch mechanism 107 includes a first winding drum, a first traction rope 107a wound on the first winding drum, and a first rotary power device in transmission connection with the first winding drum, and the outer end of the first traction rope 107a is fixedly connected with the curved arm side ladder 103. In this way, the first swinging mechanism provides power for the swinging of the curved arm side ladder 103, and through the control of the first winch mechanism 107 on the winding and unwinding of the first traction rope 107a and the gravity of the curved arm side ladder 103 itself, the up and down swinging of the curved arm side ladder 103 around the first hinge shaft 106 is realized. And the release length of the first traction rope 107a is controlled to control the swinging position of the curved arm side ladder 103. At the same time, the first traction rope 107a has a certain supporting effect on the curved arm side ladder 103, and through the fixed connection of the first traction rope 107a and the curved arm side ladder 103, the curved arm side ladder 103 is stabilized at the placed position.

[0048] Further, the plurality of first winding mechanisms 107 are arranged on the curved arm 101 in sequence along the length direction of the curved arm 101. The outer ends of the plurality of first traction ropes 107a are fixedly connected to the curved arm side ladder 103 in sequence along the length direction of the curved arm side ladder 103. In this way, the curved arm side ladder 103 can better realize up and down swinging. At the same time, the plurality of first winding mechanisms 107 are arranged, and correspondingly, the plurality of first traction ropes 107a are fixedly connected to the curved arm side ladder 103. In this way, the support points of the curved arm side ladder 103 are increased, thereby enhancing the support force of the curved arm side ladder 103 and improving the safety of the curved arm side ladder 103 when swinging up and down.

[0049] In addition, the curved arm side ladder 103 is arranged to be telescopic, including a plurality of curved arm side ladder units connected in sequence in a telescopic manner. The curved arm side ladder 103 also performs telescopic movement along with the telescopic movement of the curved arm 101. In order to prevent the plurality of curved arm side ladder units from sliding when the curved arm side ladder 103 swings, a first telescopic locking device 108 is arranged between any two adjacent curved arm side ladder units. The relative positions between the plurality of curved arm side ladder units are locked by the plurality of first telescopic locking devices 108. In this way, the curved arm side ladder 103 can be fixed at a length after telescopic movement of the curved arm 101, and the plurality of curved arm side ladder units will not slide during swinging.

[0050] Further, the curved arm side ladder 103 can be provided with an independent telescopic driving mechanism. The curved arm side ladder 103 includes a plurality of curved arm side ladder units connected in sequence in a telescopic manner. A first telescopic driving mechanism is arranged between any two adjacent curved arm side ladder units. In this way, the curved arm side ladder 103 can independently perform telescopic movement. The curved arm side ladder 103 can be telescoped to a suitable length according to actual needs by the plurality of first telescopic driving mechanisms, and is not subject to the curved arm 101. For example, when rescuing, if there are trapped persons on two floors with similar floors, the curved arm side ladder 103 may be too long when swinging to the other floor, and the trapped person may not be able to climb. At this time, the curved arm side ladder 103 can adjust the length of the curved arm side ladder 103 to a suitable length by the plurality of first telescopic driving mechanisms, so as to facilitate subsequent rescue work.

[0051] Of course, in addition to the curved arm side ladder 103 being arranged to be able to independently move, the main arm side ladder 104 can also be arranged to be able to independently move.

[0052] Specifically, as shown in FIG. 1, the main arm side ladder 104 is arranged to be able to independently move. The main arm side ladder 104 includes a plurality of main arm side ladder units connected in sequence in a telescopic manner. A second telescopic locking device 109 is arranged between any two adjacent main arm side ladder units. The relative positions between the plurality of main arm side ladder units are locked by the plurality of second telescopic locking devices 109. In this way, the main arm side ladder 104 can be fixed at a length after telescopic movement of the main arm 102, and the plurality of main arm side ladder units will not slide during swinging. Figure 3As shown, the tail of the main-arm side ladder 104 is hinged with the tail of the main arm 102 by a horizontally arranged second hinge shaft 109, and the climbing arm assembly comprises a second swing mechanism capable of driving the main-arm side ladder 104 to swing up and down relative to the main arm 102 around the second hinge shaft 109. In this way, the main-arm side ladder 104 is movable, and the main-arm side ladder 104 can be independently operated relative to the main arm 102, and the main-arm side ladder 104 can have different positions according to different requirements.

[0053] The main-arm side ladder 104 has similar application as the curved-arm side ladder 103. In general, when only one floor of personnel needs to be rescued, the main-arm side ladder 104 is fixed on the main arm 102 and arranged side by side with the main arm 102, and at this time the main-arm side ladder 104 moves with the main arm 102.

[0054] In an emergency, if rescue of trapped personnel on multiple floors is needed, the second swing mechanism can be used to drive the main-arm side ladder 104 to swing to other floors for rescue, so that rescue of trapped personnel on different floors can be achieved at the same time.

[0055] In an embodiment, the second swing mechanism is formed as a second winch mechanism 110 arranged on the main arm 102, the second winch mechanism 110 comprising a second winding drum, a second traction rope 110a wound on the second winding drum, and a second rotary power device in transmission connection with the second winding drum, and the outer end of the second traction rope 110a is fixedly connected with the main-arm side ladder 104. In this way, the second swing mechanism provides power for the swing of the main-arm side ladder 104, and through the second winch mechanism 110 controlling the winding and unwinding of the second traction rope 110a and the gravity of the main-arm side ladder 104 itself, the main-arm side ladder 104 is realized to swing up and down around the second hinge shaft 109. And by controlling the release length of the second traction rope 110a, the swing position of the main-arm side ladder 104 is controlled. At the same time, the second traction rope 110a has a certain supporting effect on the main-arm side ladder 104, and through the fixed connection of the second traction rope 110a and the main-arm side ladder 104, the main-arm side ladder 104 is stabilized at the placed position.

[0056] Further, the main arm 102 can be provided with a plurality of second winding mechanisms 110, which are sequentially and spaced apart along the length direction of the main arm 102. The outer ends of the plurality of second traction ropes 110a are sequentially fixedly connected with the main arm side ladder 104 along the length direction of the main arm side ladder 104. In this way, the main arm side ladder 104 can better realize up and down swinging. Further, the plurality of second winding mechanisms 110 are provided, and correspondingly, the plurality of second traction ropes 110a are fixedly connected with the main arm side ladder 104. In this way, the support points of the main arm side ladder 104 are increased, thereby enhancing the support force of the main arm side ladder 104 and improving the safety of the main arm side ladder 104 during up and down swinging.

[0057] In addition, the main arm side ladder 104 is provided to be telescopic, including a plurality of main arm side ladder units which are sequentially and telescopically connected. The main arm side ladder 104 also performs telescopic movement along with the telescopic movement of the main arm 102. In order to prevent the plurality of main arm side ladder units from sliding during swinging, a second telescopic locking device 111 is arranged between any two adjacent main arm side ladder units. The relative positions between the main arm side ladder units are locked by the plurality of second telescopic locking devices 111. In this way, the main arm side ladder 104 can be fixed at a length after telescopic movement of the main arm 102, and the plurality of main arm side ladder units will not slide during swinging.

[0058] Further, the main arm side ladder 104 can be provided with an independent telescopic driving mechanism. The main arm side ladder 104 includes a plurality of main arm side ladder units which are sequentially and telescopically connected. A second telescopic driving mechanism is arranged between any two adjacent main arm side ladder units. In this way, the main arm side ladder 104 can independently perform telescopic movement. The main arm side ladder 104 can be telescoped to a suitable length according to actual needs by the plurality of second telescopic driving mechanisms, and is not subject to the main arm 102. For example, during rescue, if there are trapped persons on two floors with similar floor levels to be rescued, the main arm side ladder 104 may be too long when it swings to the other floor, and the trapped persons may not be able to climb. At this time, the main arm side ladder 104 can adjust the length of the main arm side ladder 104 to a suitable length by the plurality of second telescopic driving mechanisms, so as to facilitate subsequent rescue work.

[0059] By setting the above structure, the articulated boom side ladder 103 and the main boom side ladder 104 can operate independently. In practical applications, the articulated boom side ladder 103 and the main boom side ladder 104 can be used in different ways depending on the needs of the rescue situation. When the articulated boom side ladder 103 and / or the main boom side ladder 104 do not need to operate independently, they are fixed side-by-side on the corresponding booms. When the articulated boom side ladder 103 and / or the main boom side ladder 104 need to operate independently, they are driven by the first swing mechanism and / or the second swing mechanism to swing appropriately to reach the rescue destination and carry out the rescue. For example, if only the independent movement of the articulated boom side ladder 103 is needed to meet the rescue requirements, only the articulated boom side ladder 103 can swing, at which time the main boom side ladder 104 is fixed on the main boom 102 (e.g., Figure 1 (As shown). When the main boom side ladder 104 can meet the rescue needs with independent movement, the main boom side ladder 104 swings alone, while the curved boom side ladder 103 is fixed to the curved boom 101 (not shown). When both the curved boom side ladder 103 and the main boom side ladder 104 need to move independently to meet the rescue needs, the curved boom side ladder 103 and the main boom side ladder 104 can swing simultaneously (e.g., Figure 3 (As shown). This setup allows for simultaneous rescue of people on multiple floors of a building, and also enables the transfer of personnel without moving the boom, thus improving rescue efficiency.

[0060] A second exemplary embodiment of the present invention provides an aerial rescue machine, which includes the aforementioned aerial boom assembly. The aerial rescue machine includes aerial platform fire trucks, etc., but this exemplary embodiment does not limit it to this type.

[0061] The optional embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all fall within the protection scope of the embodiments of the present invention.

[0062] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention will not describe the various possible combinations separately.

[0063] Furthermore, various different implementations of the present invention can be combined arbitrarily, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed in the present invention.

Claims

1. A climbing boom assembly, characterized by, The climbing arm assembly comprises: an arm assembly comprising a main arm (102) and a curved arm (101), the tail of the curved arm (101) being hinged to the head of the main arm (102); a climbing structure comprising a climbing platform (105) connected to the head of the curved arm (101) and a climbing ladder comprising a main arm side ladder (104) arranged side by side with the main arm (102) and a curved arm side ladder (103) arranged side by side with the curved arm (101), the tail of the curved arm side ladder (103) being hinged to the tail of the curved arm (101) through a horizontally arranged first hinge shaft (106); and a first swing mechanism capable of driving the curved arm side ladder (103) to swing up and down relative to the curved arm (101) around the first hinge shaft (106); the tail of the main arm side ladder (104) being hinged to the tail of the main arm (102) through a horizontally arranged second hinge shaft (109), the climbing arm assembly comprising: a second swing mechanism capable of driving the main arm side ladder (104) to swing up and down relative to the main arm (102) around the second hinge shaft (109); the first swing mechanism and the second swing mechanism are configured to drive at least one of the corresponding side ladders to swing open according to the needs of the rescue situation.

2. The climbing boom assembly of claim 1, wherein, The first swing mechanism is formed as a first winch mechanism (107) arranged on the curved arm (101), the first winch mechanism (107) comprising a first drum, a first traction rope (107a) wound on the first drum, and a first rotary power device in transmission connection with the first drum, the outer end of the first traction rope (107a) being fixedly connected with the curved arm side ladder (103).

3. The climbing boom assembly of claim 2, wherein, The number of the first winch mechanism (107) is multiple, and multiple first winch mechanisms (107) are arranged on the curved arm (101) in sequence along the length direction of the curved arm (101), and the outer ends of multiple first traction ropes (107a) are fixedly connected with the curved arm side ladder (103) in sequence along the length direction of the curved arm side ladder (103).

4. The climbing boom assembly of claim 1, wherein, The curved arm side ladder (103) comprises a plurality of curved arm side ladder units connected in sequence in a telescopic manner, and the climbing arm assembly comprises a plurality of first telescopic locking devices (108), and the first telescopic locking device (108) is arranged between any two adjacent curved arm side ladder units.

5. The climbing boom assembly of claim 1, wherein, The curved arm side ladder (103) comprises a plurality of curved arm side ladder units connected in sequence in a telescopic manner, and the climbing arm assembly comprises a plurality of first telescopic driving mechanisms, and the first telescopic driving mechanism is arranged between any two adjacent curved arm side ladder units.

6. The climbing boom assembly of claim 1, wherein, The second swing mechanism is formed as a second hoist mechanism (110) arranged on the main arm (102), the second hoist mechanism (110) comprising a second winding drum, a second traction rope (110a) wound on the second winding drum, and a second rotary power device in transmission connection with the second winding drum, and an outer end of the second traction rope (110a) is fixedly connected with the main arm side ladder (104).

7. The climbing boom assembly of claim 6, wherein, The number of the second hoist mechanisms (110) is multiple, multiple second hoist mechanisms (110) are arranged on the main arm (102) in sequence along the length direction of the main arm (102), and outer ends of multiple second traction ropes (110a) are fixedly connected with the main arm side ladder (104) in sequence along the length direction of the main arm side ladder (104).

8. The climbing boom assembly of claim 1, wherein, The main arm side ladder (104) comprises multiple main arm side ladder units connected in sequence in an extending and retracting mode, and the climbing arm assembly comprises multiple second extension locking devices (111), and the second extension locking device (111) is arranged between any two adjacent main arm side ladder units.

9. The climbing boom assembly of claim 1, wherein, The main arm side ladder (104) comprises multiple main arm side ladder units connected in sequence in an extending and retracting mode, and the climbing arm assembly comprises multiple second extension driving mechanisms, and the second extension driving mechanism is arranged between any two adjacent main arm side ladder units.

10. A mechanical rescue for climbing, characterized in that, The climbing rescue machine comprises the climbing arm assembly according to any one of claims 1 to 9.

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