Outdoor auxiliary ladder

Abstract

The embodiment of the utility model provides an outdoor auxiliary ladder. The outdoor auxiliary ladder comprises a ladder frame, supporting legs and a driving assembly. The supporting legs are arranged at at least one end of the ladder frame in the preset direction, each supporting leg comprises a connecting main body and a supporting main body which are connected, the connecting main bodies are connected with one end of the ladder frame, the supporting main bodies can extend out of the end of the ladder frame in the preset direction, and the supporting main bodies are inserted into the connecting main bodies; the supporting main body is movably arranged along the preset direction relative to the connecting main body; and the driving assembly comprises a locking piece and a pressure driving piece, the output end of the pressure driving piece communicates with the connecting main body to regulate and control the supporting main body to reciprocate in the preset direction, and the locking piece can control the input end of the pressure driving piece to be opened and closed. Therefore, the outdoor auxiliary ladder disclosed by the embodiment of the utility model has the advantages of improving the construction safety and saving labor.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission, in particular to an outdoor auxiliary ladder. Background Art

[0002] During the power transmission process, auxiliary ladders are often needed for construction work. The auxiliary ladders in related technologies generally include a frame and multiple ladder rods, and the frame has support legs with fixed heights. Power transmission operations often take place in areas with uneven ground, such as suburban areas and mountainous areas. However, conventional auxiliary ladders cannot adjust the height of their support legs adaptively, and are prone to tipping over or sliding during operation. Once tipping over or sliding, workers will fall with the ladder, resulting in low safety in power transmission. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the utility model provides an outdoor auxiliary ladder. The outdoor auxiliary ladder has the advantages of improving construction safety and saving labor.

[0004] The outdoor auxiliary ladder of the embodiment of the utility model comprises a ladder frame, a driving assembly and at least two supporting legs.

[0005] At least two of the supporting legs are arranged on at least one end of the ladder frame along a preset direction, and each of the supporting legs includes a connected connecting body and a supporting body, the connecting body is connected to one end of the ladder frame, and the supporting body can extend out of the one end of the ladder frame along the preset direction, the supporting body is inserted into the connecting body, and the supporting body is movably arranged relative to the connecting body along the preset direction; the driving assembly includes a locking member and a pressure driving member, the output end of the pressure driving member is connected to the connecting body to regulate the reciprocating movement of the supporting body along the preset direction so as to control the extension or shortening of the supporting leg, and the locking member can control the opening and closing of the input end of the pressure driving member.

[0006] The outdoor auxiliary ladder of the embodiment of the utility model can move along the preset direction relative to the connecting body through the supporting body of the supporting legs, that is, when the outdoor road surface is uneven during operation, the height difference of at least two supporting legs can be adjusted to compensate for the problem of the overall tilt of the ladder frame caused by the uneven road surface. Therefore, the outdoor auxiliary ladder has the advantage of improving the safety of workers' operation and construction.

[0007] In addition, the outdoor auxiliary ladder divides the driving assembly into a locking member and a pressure driving member, and uses the cooperation between the locking member and the pressure driving member to control the fluid channel communication. This helps to achieve a larger pressure output with a smaller output force (the cooperation of the worm gear has the characteristic of saving effort). This helps to reduce the power output during operation and achieve a larger supporting force.

[0008] Therefore, the outdoor auxiliary ladder of the embodiment of the utility model has the advantages of improving construction safety and saving labor.

[0009] In some embodiments, the locking member includes a worm wheel, a worm and a sliding drive member, the sliding drive member is arranged in the pressure drive member to control the flow of liquid in the pressure drive member, the worm is meshed with the worm wheel, the inner circumferential surface of the worm wheel has one of a limiting protrusion and a limiting groove extending along its axial direction, and the sliding drive member has the other of the limiting protrusion and the limiting groove, and the limiting protrusion guide is engaged in the limiting groove so that the sliding drive member moves along the preset direction.

[0010] In some embodiments, the sliding drive member includes a sliding rod, a screw plugging member and a nut member, the nut member is arranged on the pressure driving member, a part of the screw plugging member is arranged in the pressure driving member to control the flow of liquid in the pressure driving member, the sliding rod has one of the limiting protrusion and the limiting groove, the screw plugging member is connected to one end of the sliding rod, and the screw plugging member is threadedly matched with the nut member.

[0011] In some embodiments, the screw sealing member includes a screw and a sealing plate, one end of the screw is connected to the sliding rod, the other end of the screw is inserted into the pressure-driven member, the screw is threadedly matched with the nut member, and the sealing plate is arranged on the other end of the screw, and the sealing plate can control the flow of liquid in the pressure-driven member.

[0012] In some embodiments, the locking member further includes a crank connected to one end of the worm.

[0013] In some embodiments, the pressure-driven component includes a pressure regulating component and a hydraulic box, the hydraulic box having an oil storage chamber, an regulating channel and an oil channel, the oil storage chamber is connected to the oil channel through the regulating channel, and the movement of the screw sealing component controls the connection between the oil channel and the oil storage chamber.

[0014] In some embodiments, the connecting body includes a piston cylinder and a piston rod, the piston cylinder is arranged on one end of the ladder frame, the piston rod is arranged in the piston cylinder, and one end of the piston rod is connected to the supporting body, and the output end of the pressure driving member is connected to the piston cylinder having one end of the piston rod.

[0015] In some embodiments, the support body includes a support rod body, a compression spring and a limit block, one end of the support rod body is connected to the piston rod, the limit block is arranged at the other end of the support rod body, the compression spring is sleeved on the support rod body, and the two ends of the compression spring are respectively abutted against the limit block and the piston cylinder.

[0016] In some embodiments, an anti-slip layer is provided on a side of the limiting block away from the supporting rod body.

[0017] In some embodiments, the ladder frame includes a frame body and a plurality of ladder rods, wherein the plurality of ladder rods are arranged on the frame body at intervals along the preset direction, and one of the ladder rods is arranged at one end of the ladder frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of an outdoor auxiliary ladder according to an embodiment of the utility model.

[0019] Figure 2 It is a schematic structural diagram of an outdoor auxiliary ladder in a cross-sectional state according to an embodiment of the utility model.

[0020] Figure 3 It is a cross-sectional view of a drive assembly according to an embodiment of the utility model.

[0021] Figure 4 It is a cross-sectional view of a locking member according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] Ladder frame 1; frame body 11; ladder rod 12;

[0024] Support foot 2; connecting body 21; piston cylinder 211; piston rod 212;

[0025] Support body 22; support rod 221; compression spring 222; limit block 223;

[0026] Drive assembly 3; locking member 31; worm 311; worm wheel 312; sliding drive member 313; sliding rod 3131; screw plugging member 3132; screw 31321; plugging plate 31322;

[0027] Nut member 3133;

[0028] Pressure driving member 32; pressure regulating member 321; hydraulic box 322; oil storage chamber 3221; regulating channel 3222; oil channel 3223;

[0029] Crank 33. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0031] Reference below Figure 1-Figure 4 An outdoor auxiliary ladder according to an embodiment of the utility model is described.

[0032] The outdoor auxiliary ladder of the embodiment of the utility model comprises a ladder frame 1, supporting legs 2 and a driving assembly 3.

[0033] At least two supporting legs 2 are arranged on the ladder frame 1 along a preset direction (for example, Figure 1 On at least one end of the ladder frame 1 (in the up and down directions shown in the figure), each supporting foot 2 includes a connected connecting body 21 and a supporting body 22, the connecting body 21 is connected to one end of the ladder frame 1, and the supporting body 22 can extend out of one end of the ladder frame 1 along a preset direction, and the supporting body 22 is inserted into the connecting body 21, and the supporting body 22 is movably arranged relative to the connecting body 21 along a preset direction; the driving assembly 3 includes a locking member 31 and a pressure driving member 32, the output end of the pressure driving member 32 is connected to the connecting body 21 to regulate the reciprocating movement of the supporting body 22 along the preset direction, and the locking member 31 can control the opening and closing of the input end of the pressure driving member 32.

[0034] The outdoor auxiliary ladder of the embodiment of the utility model can be moved along a preset direction by the support body 22 of the support legs 2 relative to the connection body 21, that is, when the outdoor road surface is uneven during operation, the height difference of at least two support legs 2 can be adjusted to compensate for the problem of the overall tilt of the ladder frame 1 caused by the uneven road surface. Therefore, the outdoor auxiliary ladder has the advantage of improving the safety of workers' operation and construction.

[0035] In addition, the outdoor auxiliary ladder divides the driving assembly 3 into a locking member 31 and a pressure driving member 32, and uses the cooperation between the locking member 31 and the pressure driving member 32 to control the fluid channel communication. This helps to achieve a larger pressure output with a smaller output force (the cooperation of the worm gear has the characteristic of saving effort). Therefore, the outdoor auxiliary ladder of the embodiment of the utility model helps to reduce the power output during operation and achieve a larger supporting force.

[0036] Therefore, the outdoor auxiliary ladder of the embodiment of the utility model has the advantages of improving construction safety and saving labor.

[0037] Specifically, for example, Figure 1As shown in , the driving assembly 3 has at least two, and at least two driving assemblies 3 are respectively connected to the supporting feet 2 on the left and right sides of the lower end of the ladder frame 1. In this way, not only can the operating height of the outdoor auxiliary ladder be adjusted to a certain extent. For example, the support height of the outdoor auxiliary ladder can be adjusted by adjusting the supporting feet 2 on both sides at the same time. In addition, the corresponding support heights of the supporting feet 2 on the left and right sides can also be controlled separately. In this way, the problem of easy tilting caused by uneven supporting surfaces during power operations is adapted. During the outdoor power transmission process, when the outdoor auxiliary ladder needs to climb, if the two sides of the supporting surface are uneven, the support body 22 can be driven by the pressure drive 32 to adjust until it is adjusted to the corresponding position, and the support body 22 is fixed at the corresponding position by the locking member 31 to achieve stable support of the outdoor auxiliary ladder.

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, the locking member 31 includes a worm wheel 312, a worm 311 and a sliding drive member 313. The sliding drive member 313 is arranged in the pressure drive member 32 to control the flow of liquid (hydraulic oil) in the pressure drive member 32. The worm 311 is meshed with the worm wheel 312. The inner circumferential surface of the worm wheel 312 has a limiting protrusion (not shown) and a limiting groove (not shown) extending along its axial direction. The sliding drive member 313 has the other of the limiting protrusion and the limiting groove. The limiting protrusion guide is fitted in the limiting groove so that the sliding drive member 313 moves along a preset direction.

[0039] The outdoor auxiliary ladder of the embodiment of the utility model is characterized in that the locking member 31 is divided into a worm wheel 312, a worm 311 and a sliding drive member 313, the worm 311 is meshed with the worm wheel 312, and the worm wheel and the sliding drive member 313 cooperate through the limiting protrusion and the limiting groove, so that the sliding drive member 313 can generate a force along the axial direction of the worm wheel 312 relative to the worm wheel 312 during the process of rotating with the rotation of the worm wheel 312, and then the opening and closing of the pressure drive member 32 can be controlled by the movement of the sliding drive member 313. Therefore, the locking member 31 has the advantages of large transmission ratio, compact structure and high transmission stability.

[0040] like Figure 1 , Figure 3 and Figure 4 As shown, the sliding drive member 313 includes a sliding rod 3131, a screw sealing member 3132 and a nut member 3133. The nut member 3133 is arranged on the pressure driving member 32. A part of the screw sealing member 3132 is arranged in the pressure driving member 32 to control the flow of liquid in the pressure driving member 32. The sliding rod 3131 has one of a limiting convexity and a limiting groove. The screw sealing member 3132 is connected to one end of the sliding rod 3131, and the screw sealing member 3132 is threadedly matched with the nut member 3133.

[0041] The outdoor auxiliary ladder of the embodiment of the utility model includes a sliding rod 3131, a screw plugging member 3132 and a nut member 3133 through a sliding driving member 313. The external thread on the screw plugging member 3132 cooperates with the internal thread of the nut member 3133. The screw plugging member 3132 rotates with the rotation of the sliding rod 3131. The rotation of the screw plugging member 3132 moves due to the cooperation with the nut member 3133, thereby achieving the blocking of the liquid in the pressure driving member 32. Therefore, the outdoor auxiliary ladder has the advantages of simple structure and high stability.

[0042] Optionally, the nut member 3133 may be a single nut (the nut having an internal thread) or a nut group consisting of a plurality of nuts.

[0043] like Figure 1 , Figure 3 and Figure 4 As shown, the screw sealing member 3132 includes a screw 31321 and a sealing plate 31322. One end of the screw 31321 is connected to the sliding rod 3131, and the other end of the screw 31321 is inserted into the pressure driving member 32. The screw 31321 is threadedly matched with the nut member 3133. The sealing plate 31322 is arranged on the other end of the screw 31321. The sealing plate 31322 can control the flow of liquid in the pressure driving member 32.

[0044] The outdoor auxiliary ladder of the embodiment of the utility model is divided into a screw rod 31321 and a blocking plate 31322 by dividing the screw rod 31321 and the blocking plate 31322, and the blocking plate 31322 can open and close the liquid channel by means of the screw rod 31321 and the nut 3133. Therefore, the outdoor auxiliary ladder has the advantages of high structural stability and convenient operation.

[0045] Optionally, the blocking plate 31322 can block the liquid channel on the pressure-driven component 32 to prevent the liquid in the connecting body 21 from flowing back into the pressure-driven component 32 .

[0046] like Figure 1 , Figure 3 and Figure 4 As shown, the locking member 31 further includes a crank 33 , and the crank 33 is connected to one end of the worm 311 .

[0047] The outdoor auxiliary ladder of the embodiment of the utility model can conveniently control the rotation of the locking member 31 through the crank 33. Therefore, the outdoor auxiliary ladder has the advantage of high convenience in operation.

[0048] Specifically, the crank 33 is disposed at the free end of the worm 311 , that is, the end of the worm 311 away from the worm wheel.

[0049] like Figure 2 and Figure 3 As shown, the pressure drive component 32 includes a pressure regulating component 321 and a hydraulic box 322. The hydraulic box 322 has an oil storage chamber 3221, an regulating channel 3222 and an oil channel 3223. The oil storage chamber 3221 is connected to the oil channel 3223 through the regulating channel 3222. The movement of the screw sealing component 3132 controls the connection between the oil channel 3223 and the oil storage chamber 3221.

[0050] The outdoor auxiliary ladder of the embodiment of the utility model controls the pressure in the hydraulic box 322 and the flow direction of the liquid through the pressure regulating member 321. Therefore, the outdoor auxiliary ladder has the advantages of simple structure and good control effect.

[0051] Specifically, the hydraulic box 322 has an opening facing upward, and the pressure regulating member 321 is connected to the opening of the hydraulic box 322. The regulating channel 3222 extends in the up-down direction, and the oil channel 3223 is connected to the connecting body 21. The blocking plate 31322 is arranged in the regulating channel 3222, for example, Figure 1 As shown, the blocking plate 31322 can move in the left and right directions.

[0052] like Figure 2 and Figure 3 As shown, the connecting body 21 includes a piston cylinder 211 and a piston rod 212. The piston cylinder 211 is arranged on one end of the ladder frame 1, and the piston rod 212 is arranged in the piston cylinder 211, and one end of the piston rod 212 is connected to the supporting body 22, and the output end of the pressure driving member 32 is connected to the piston cylinder 211 having one end of the piston rod 212.

[0053] The outdoor auxiliary ladder of the embodiment of the utility model is divided into a connecting body 21 into a piston cylinder 211 and a piston rod 212, and the pressure in the piston cylinder 211 and the position of the piston rod 212 are adjusted by a pressure adjusting member 321. Therefore, the outdoor auxiliary ladder has the advantages of simple structure and high reliability.

[0054] Specifically, the piston cylinder 211 is in communication with the oil passage 3223 .

[0055] like Figure 1 and Figure 2 As shown, the support body 22 includes a support rod body 221, a compression spring 222 and a limit block 223. One end of the support rod body 221 is connected to the piston rod 212, and the limit block 223 is arranged at the other end of the support rod body 221. The compression spring 222 is sleeved on the support rod body 221, and the two ends of the compression spring 222 are respectively abutted against the limit block 223 and the piston cylinder 211.

[0056] The outdoor auxiliary ladder of the embodiment of the utility model is divided into a support body 22 into a support rod body 221, a compression spring 222 and a limit block 223. One end of the support rod body 221 is connected to the piston rod 212, and the two ends of the compression spring 222 are respectively in contact with the limit block 223 and the piston cylinder 211. Therefore, when the hydraulic pressure is reduced, it is convenient to realize the reset of the piston rod 212. Therefore, the outdoor auxiliary ladder improves the convenience of operation.

[0057] The side of the limit block 223 away from the support rod 221 is provided with an anti-slip layer. Figure 1 The lower end of the limit block 223 shown in the figure is provided with an anti-skid layer. Therefore, when the outdoor auxiliary ladder is used, the problem of slipping is not easy to occur. Therefore, the outdoor auxiliary ladder has the advantages of high stability and safety in use.

[0058] like Figure 1 and Figure 2 As shown, the ladder frame 1 comprises a frame body 11 and a plurality of ladder rods 12, wherein the plurality of ladder rods 12 are arranged on the frame body 11 at intervals along a preset direction, and one of the ladder rods is arranged at one end of the ladder frame, thereby having the advantages of simple structure and good stability.

[0059] Specifically, for example, Figure 1 As shown in FIG. , the ladder rod 12 at the lowest end is connected to the lower end of the frame 11 , and the support foot 2 is connected to the ladder rod 12 at the lowest end.

[0060] The use process of the outdoor auxiliary ladder of the embodiment of the utility model is as follows. When encountering a supporting surface with poor flatness, the control crank 33 is rotated to drive the worm wheel 312 and the worm 311 to rotate, wherein the rotation of the worm wheel 312 will be matched with the limiting convex guide in the limiting groove so that the sliding drive member can move along the preset direction, and a part of the screw sealing member 3132 is arranged in the pressure driving member 32 to control the flow of liquid in the pressure driving member 32, and the sealing plate 31322 can control the flow of liquid in the pressure driving member 32. The movement of the screw sealing member 3132 realizes the connection between the hydraulic box 322, the control oil channel 3223 and the oil storage chamber 3221, so that the hydraulic oil in the oil storage chamber 3221 is in a non-pressurized state. The ladder frame 1 is lifted to squeeze the limit block 223 at the bottom against the leaning surface. The limit block 223 at the bottom is squeezed against the leaning surface, and the limit block 223 overcomes the force of the compression spring 222. At the same time, the compression spring 222 acts in the opposite direction to make the limit block 223 fully contact with the leaning surface, and then the support rod body 221 corresponding to the corresponding limit block 223 drives the piston rod 212 to move. The movement of the piston rod 212 can push the hydraulic pressure in the piston cylinder 211 to enter the oil channel 3223 through the oil pipe, and then enter the connecting channel through the oil channel 3223, and then enter the oil storage chamber 3221 through the connecting channel, and then enter the oil storage chamber 3221 through the capacity of the oil storage chamber 3221. The storage area can accommodate the discharged hydraulic oil. When the limit block 223 is in contact with the leaning surface, shake the crank handle 33 on the installation box on the left or right side, the crank handle 33 drives the worm 311 to rotate, the rotation of the worm 311 drives the worm wheel 312 to rotate, and the screw plug 3132 moves to close the outlet connected to the oil passage 3223, so that the hydraulic oil cannot enter or exit through the oil passage 3223. Since the hydraulic oil cannot enter or exit, the hydraulic oil acts in the opposite direction on the piston rod 212, so that the piston rod 212 cannot move up and down, thereby fixing the position of the support rod body 221 and the limit block 223, thereby achieving contact with the leaning surface.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0065] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0066] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An outdoor auxiliary ladder, characterized in that: include: A ladder frame and at least two supporting legs, wherein at least two supporting legs are arranged on at least one end of the ladder frame along a preset direction, each supporting leg comprises a connecting body and a supporting body connected to each other, the connecting body is connected to one end of the ladder frame, the supporting body can extend out of the one end of the ladder frame along the preset direction, the supporting body is inserted into the connecting body, and the supporting body is movably arranged relative to the connecting body along the preset direction; A driving assembly, the driving assembly includes a locking member and a pressure driving member, the output end of the pressure driving member is connected to the connecting body to regulate the reciprocating movement of the supporting body along the preset direction so as to control the extension or shortening of the supporting foot, and the locking member can control the opening and closing of the pressure driving member.

2. The outdoor auxiliary ladder according to claim 1, characterized in that: The locking member includes a worm wheel, a worm and a sliding drive member. The sliding drive member is arranged in the pressure drive member to control the flow of liquid in the pressure drive member. The worm is meshed with the worm wheel. The inner circumferential surface of the worm wheel has one of a limiting protrusion and a limiting groove extending along its axial direction. The sliding drive member has the other of the limiting protrusion and the limiting groove. The limiting protrusion guide is engaged in the limiting groove so that the sliding drive member moves along the preset direction.

3. The outdoor auxiliary ladder according to claim 2, characterized in that: The sliding drive member includes a sliding rod, a screw plugging member and a nut member. The nut member is arranged on the pressure drive member. A part of the screw plugging member is arranged in the pressure drive member to control the flow of liquid in the pressure drive member. The sliding rod has one of the limiting protrusion and the limiting groove. The screw plugging member is connected to one end of the sliding rod, and the screw plugging member is threadedly matched with the nut member.

4. The outdoor auxiliary ladder according to claim 3, characterized in that: The screw sealing member includes a screw and a sealing plate. One end of the screw is connected to the sliding rod, and the other end of the screw is inserted into the pressure driving member. The screw is threadedly matched with the nut member. The sealing plate is arranged on the other end of the screw. The sealing plate can control the flow of liquid in the pressure driving member.

5. The outdoor auxiliary ladder according to claim 2, characterized in that: The locking member also includes a crank, and the crank is connected to one end of the worm.

6. The outdoor auxiliary ladder according to claim 3, characterized in that: The pressure drive component includes a pressure regulating component and a hydraulic box, the hydraulic box has an oil storage chamber, a regulating channel and an oil channel, the oil storage chamber is connected with the oil channel through the regulating channel, and the movement of the screw sealing component controls the connection between the oil channel and the oil storage chamber.

7. The outdoor auxiliary ladder according to claim 1, characterized in that: The connecting body includes a piston cylinder and a piston rod, wherein the piston cylinder is arranged on one end of the ladder frame, the piston rod is arranged in the piston cylinder, and one end of the piston rod is connected to the supporting body, and the output end of the pressure driving member is connected to the piston cylinder having one end of the piston rod.

8. The outdoor auxiliary ladder according to claim 7, characterized in that: The support body includes a support rod body, a compression spring and a limit block, one end of the support rod body is connected to the piston rod, the limit block is arranged at the other end of the support rod body, the compression spring is sleeved on the support rod body, and the two ends of the compression spring are respectively abutted against the limit block and the piston cylinder.

9. The outdoor auxiliary ladder according to claim 8, characterized in that: A non-slip layer is provided on a side of the limiting block away from the supporting rod body.

10. The outdoor auxiliary ladder according to claim 1, characterized in that: The ladder frame includes a frame body and a plurality of ladder rods, wherein the plurality of ladder rods are arranged on the frame body at intervals along the preset direction, and one of the ladder rods is arranged at one end of the ladder frame.

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