CN211258477U

CN211258477U - Foldable escalator for electric shovel and electric shovel with foldable escalator

Info

Publication number: CN211258477U
Application number: CN201921587829.0U
Authority: CN
Inventors: 孙宝丹; 窦海春; 张伟; 李健英
Original assignee: Jarud Banner Zahazuoer Coal Industry Co ltd
Current assignee: Jarud Banner Zahazuoer Coal Industry Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-08-14
Anticipated expiration: 2029-09-23

Abstract

The utility model discloses a collapsible staircase for electric shovel and electric shovel that has it, a collapsible staircase for electric shovel includes first ladder, second ladder and drive arrangement, the length direction of first ladder inclines for the horizontal direction, the one end of second ladder with but first ladder pivot ground links to each other so that the second ladder for first ladder is rotatable between expansion position and folding position, wherein expansion position, the length direction of second ladder with the length direction of first ladder is unanimous roughly folding position, the second ladder with first ladder becomes predetermined angle just the other end of second ladder is higher than the second ladder one end, drive arrangement with the second ladder links to each other in order to drive the second ladder rotates. The utility model discloses a collapsible staircase for electric shovel simple structure uses and convenient operation, can reduce safe risk.

Description

Foldable escalator for electric shovel and electric shovel with foldable escalator

Technical Field

The utility model relates to an electric shovel equipment technical scheme specifically relates to a foldable staircase for electric shovel and electric shovel that has this foldable staircase.

Background

An electric shovel, also known as a mechanical excavator, is one of the important devices in surface mining, and is used to dig and remove soil, ore or coal from a working surface and load the soil, ore or coal into a transportation device or directly unload the soil into a dump.

In order to facilitate the operator to get on and off the vehicle, a ladder is generally provided on the electric shovel in the related art. However, the ladders in the related art have problems of complicated structure, inconvenience in use and operation, potential safety hazards and the like.

Disclosure of Invention

The present invention aims at solving at least one of the technical problems in the related art to a certain extent.

Therefore, the utility model discloses an aspect provides a collapsible staircase for electric shovel, this collapsible staircase simple structure, uses and convenient operation and has reduced the safety risk.

The utility model discloses another aspect has still provided an electric shovel.

According to the utility model discloses a collapsible staircase for electric shovel of the embodiment of first aspect includes: the length direction of the first ladder inclines relative to the horizontal direction, and the upper end of the first ladder is connected with a platform of the electric shovel; a second ladder having one end pivotally connected to the first ladder such that the second ladder is rotatable relative to the first ladder between an extended position in which a length direction of the second ladder is substantially coincident with a length direction of the first ladder and a collapsed position in which the second ladder is at a predetermined angle to the first ladder and another end of the second ladder is higher than the one end of the second ladder; and the driving device is connected with the second ladder to drive the second ladder to rotate.

According to the utility model discloses a foldable escalator for electric shovel, through setting up first ladder and second ladder and drive second ladder for first ladder pivoted drive arrangement, can make foldable escalator expand and fold, and when foldable escalator expanded, the length direction of first ladder and the length direction of second ladder are unanimous roughly, so that the platform of electric shovel about the operating personnel, when foldable escalator folded, the one end of keeping away from first ladder that has contained angle and second ladder between second ladder and the first ladder was higher than the one end that second ladder and first ladder link to each other, therefore, this foldable escalator simple structure, use and convenient operation, can reduce the safety risk.

In some embodiments, the first ladder comprises: the length direction of the first side support plate is inclined relative to the horizontal direction; a second side support plate, the second side support plate and the first side support plate are arranged in parallel and at intervals; the first anti-skid plates are connected between the first side support plate and the second side support plate and are arranged substantially horizontally, and the first anti-skid plates are arranged at intervals along the length direction of the first side support plate.

In some embodiments, each of the first side support plate and the second side support plate includes a side vertical plate, a top plate, and a bottom plate, an outer edge of the top plate is connected to an upper edge of the side vertical plate, an outer edge of the bottom plate is connected to a lower edge of the side vertical plate, an upper end of the top plate and an upper end of the bottom plate are flush with an upper end of the side vertical plate, a lower end of the bottom plate is flush with a lower end of the side vertical plate, and a length of the top plate is smaller than a length of the bottom plate.

In some embodiments, the second ladder comprises: a first support member, a first end of the first support member being rotatably connected to the first ladder; the first support piece and the second support piece are arranged in parallel and at intervals, and the first end of the second support piece is rotatably connected with the first ladder; a plurality of second cleats connected between the first support and the second support and positioned substantially horizontally, the plurality of second cleats being spaced apart along a length of the first support.

In some embodiments, the first support is a first channel steel, the second support is a second channel steel, a notch of the first channel steel is opposite to a notch of the second channel steel, the first end of the second anti-skid plate is connected to the inner side surface and the inner top surface of the first channel steel, and the second end of the second anti-skid plate is connected to the inner side surface and the inner top surface of the second channel steel.

In some embodiments, the second ladder further comprises:

the first handrail is connected with the first supporting piece;

the second handrail is connected with the second supporting piece and is arranged opposite to the first handrail.

In some embodiments, the foldable escalator for an electric shovel further comprises a pin shaft, wherein the pin shaft penetrates through the first supporting part and the second supporting part, a first end of the pin shaft is connected with the first supporting part and the first side supporting plate, and a second end of the pin shaft is connected with the second supporting part and the second side supporting plate.

In some embodiments, the driving device comprises: the cylinder body of the cylinder is arranged on the first ladder or the platform, and the piston rod of the cylinder is connected with the second ladder; the air storage tank is connected with the air cylinder and used for supplying air to the air cylinder; and the electromagnetic valve is connected between the air cylinder and the air storage tank and used for controlling air supply to the air cylinder.

In some embodiments, the driving device further comprises: the one-way valve is connected between the air storage tank and the electromagnetic valve; a filter connected between the air reservoir and the one-way valve; the pressure gauge is connected between the air storage tank and the filter; the water diversion filter element is connected between the filter and the one-way valve; the oil atomizer is connected between the water distribution filter element and the one-way valve; and the switch is connected between the gas storage tank and the pressure gauge.

In some embodiments, in the deployed position, a length direction of the first ladder and a length direction of the second ladder are inclined at substantially 45 degrees with respect to a horizontal direction.

According to the utility model discloses an electric shovel of the embodiment of second aspect includes: a vehicle body having a platform; the escalator is the foldable escalator for the electric shovel in any one of the embodiments, and the upper end of the first ladder of the foldable escalator is connected with the platform.

Drawings

Fig. 1 is a schematic structural view of an electric shovel according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of a foldable escalator, with the second ladder in an extended position, according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a foldable escalator, with the second ladder in a folded position, according to an embodiment of the present invention.

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

Fig. 5 is a schematic structural view of a second ladder according to an embodiment of the present invention.

Fig. 6 is a schematic view of a drive arrangement according to an embodiment of the invention.

Reference numerals:

the escalator 100, the first ladder 1, the first side support plate 11, the second side support plate 12, the side vertical plate 101, the top plate 102, the bottom plate 103, the first antiskid plate 13, the second ladder 2, the first support member 21, the second support member 22, the second antiskid plate 23, the first handrail 24, the second handrail 25, the pin shaft 3,

the body 200, the platform 201,

the device comprises a driving device 300, a first connecting plate 301, a second connecting plate 302, a cylinder 31, an air storage tank 32, an electromagnetic valve 33, a one-way valve 34, a filter 35, a pressure gauge 36, a water distribution filter element 37, an oil atomizer 38 and a switch 39.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element 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.

A foldable escalator for an electric shovel and an electric shovel having the same according to embodiments of the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1 to 6, an electric shovel according to an embodiment of the present invention includes a body 200 and an escalator. The vehicle body 200 has a platform 201 on which an operator can walk.

The staircase is a foldable staircase 100 for an electric shovel according to an embodiment of the present invention. The foldable escalator 100 includes a first step 1 and a second step 2, the length direction of the first step 1 is inclined with respect to the horizontal direction, and the upper end of the first step 1 is connected to a platform 201. In other words, the first ladder 1 of the foldable escalator 100 is not horizontally disposed, but the length direction of the first ladder 1 has an angle with the horizontal direction. As shown in fig. 1 and 2, the upper end of the first step 1 is connected to the platform 201, the first step 1 extends leftward from the left outer edge of the platform 201 and is inclined downward, and an operator can reach the platform 201 through the first step 1.

One end of the second ladder 2 is pivotally connected to the first ladder 1 so that the second ladder 2 is rotatable relative to the first ladder 1 between an unfolded position and a folded position. In other words, the lower end of the first ladder 1 is connected to one end of the second ladder 2, and the second ladder 2 is pivotable with respect to the first ladder 1.

In the deployed position, the length direction of the second ladder 2 substantially coincides with the length direction of the first ladder 1. In other words, as shown in fig. 2 and 3, when the second ladder 2 is unfolded, the second ladder 2 extends leftward from the lower end of the first ladder 1 and is inclined downward, and the inclination angle of the second ladder 2 is the same as that of the first ladder 1 such that the longitudinal direction of the second ladder 2 and the longitudinal direction of the first ladder 1 are substantially the same. In the deployed position, the operator can go up to the first ladder 1 via the second ladder 2 and pass the first ladder 1 onto the platform 201 of the vehicle body 200, or go down from the platform 201 of the vehicle body 200 onto the ground via the first ladder 1 and the second ladder 2.

In the folded position, the second ladder 2 is at a predetermined angle to the first ladder 1 and the other end of the second ladder 2 is higher than one end of the second ladder 2. In other words, when the operator does not need to go up to the platform 201 or go down from the platform 201 to the ground, the second ladder 2 may be rotated upward relative to the first ladder 1 to be folded until the end of the second ladder 2 remote from the first ladder 2 is higher than the end of the second ladder 2 connected to the first ladder 1.

As shown in fig. 1 to 3, the upper end of the second ladder 2 is connected to the lower end of the first ladder 1, and in the unfolded position, the lower end of the second ladder 2 is located away from the first ladder 1 and below the upper end of the second ladder 1, and in the folded position, the second ladder 2 is rotated upward so that the lower end of the second ladder 2 is located above the upper end of the second ladder 1.

The driving device 300 is connected to the second ladder 2 to drive the second ladder 2 to rotate. In other words, the second ladder 2 is driven to rotate between the unfolded position and the folded position by the driving device 300.

According to the utility model discloses a foldable escalator 100 for electric shovel, through setting up first ladder 1 and second ladder 2 and drive second ladder 2 for first ladder 1 pivoted drive arrangement 300, can make foldable escalator 100 expand and fold, and when foldable escalator 100 expanded, the length direction of first ladder 1 and the length direction of second ladder 2 are unanimous roughly, in order to supply the platform 201 of upper and lower automobile body 200 of operating personnel, when foldable escalator 100 was folding, the one end of keeping away from first ladder 1 that has contained angle and second ladder 2 between second ladder 2 and the first ladder 1 was higher than the one end that second ladder 2 and first ladder 1 link to each other, therefore, this foldable escalator 100 structure is simple relatively, convenient to use and operate, can reduce the safety risk.

In some embodiments, the first ladder 1 comprises a first side brace 11, a second side brace 12 and a plurality of first cleats 13, the length direction of the first side brace 11 being inclined with respect to the horizontal direction. The second side support plate 12 is arranged parallel to and spaced apart from the first side support plate 11.

In other words, the first side support plate 11 and the second side support plate 12 both extend from right to left and are arranged obliquely downward, and the first side support plate 11 and the second side support plate 12 are inclined at the same angle and are spaced apart from each other.

The first cleat 13 is connected between the first and

second side brackets

11, 12 and lies generally horizontally. In other words, one end of the first cleat 13 is connected to the first side bracket 11, the other end of the first cleat 13 is connected to the second side bracket 12, and the first cleat 13 is arranged substantially parallel to the horizontal plane.

The plurality of first cleat plates 13 are arranged at intervals along the length direction of the first side bracket 11. Alternatively, the plurality of first cleat plates 13 are evenly spaced along the length of the first side bracket 11, i.e., the distances between adjacent first cleat plates 13 are the same.

In some embodiments, each of the first and

second side plates

11 and 12 includes a side riser 101, a top plate 102, and a bottom plate 103. In other words, each of the first and

second side plates

11 and 12 includes a side riser 101, a top plate 102, and a bottom plate 103.

The outer edge of the top plate 102 is connected with the upper edge of the side vertical plate 101, and the outer edge of the bottom plate 103 is connected with the lower edge of the side vertical plate 101. In other words, side riser 101 has an upper edge and a lower edge disposed opposite to each other in its width direction, top plate 102 extends inward from the upper edge of side riser 101, and bottom plate 103 extends inward from the lower edge of side riser 101. The top plate 102 has an outer edge and an inner edge in its width direction, and the bottom plate 103 has an outer edge and an inner edge in its width direction. Here, it should be noted that the area between the first side plate 11 and the second side plate 12 is the inner area.

The upper ends of the top plate 102 and the bottom plate 103 are flush with the upper ends of the side standing plates 101. The lower end of bottom plate 103 is flush with the lower end of side riser 101, and the length of top plate 102 is less than the length of bottom plate 103.

In other words, the upper end of the top plate 102 in the longitudinal direction thereof and the upper end of the bottom plate 102 in the longitudinal direction thereof are flush with the upper ends of the side standing plates 101 in the longitudinal direction thereof. The lower end of bottom plate 103 in its length direction is flush with the lower end of side riser 101 in its length direction, and the lower end of top plate 102 in its length direction is higher than the lower end of bottom plate 103 in its length direction, i.e. higher than the lower end of side riser 101 in its length direction, so that the length of top plate 102 is less than the length of bottom plate 103, i.e. less than the length of side riser 101.

As shown in fig. 1 and 4, the upper end of the first side brace 11 and the upper end of the second side brace 12 are connected to a platform 201 of the vehicle body 200. As shown in fig. 4, one end of the first cleat 13 is connected to the inner surface of the side plate 101 of the first side bracket 11 and to the inner surface of the top plate 102 of the first side bracket 11. The other end of the first cleat 13 is connected to the inner surface of the side plate 101 of the second side bracket 12 and to the inner surface of the top plate 102 of the second side bracket 12.

In some embodiments, the second ladder 2 comprises a first support 21, a second support 22, and a plurality of second cleats 23, with a first end of the first support 21 rotatably connected to the first ladder 1. The first support 21 and the second support 22 are arranged in parallel and spaced apart. A first end of the second support 22 is rotatably connected to the first ladder 1.

As shown in fig. 5, in the deployed position, the first support 21 and the second support 22 both extend from right to left and are inclined downward, and the inclination angles of the first support 21 and the second support 22 are the same, so that the length direction of the first support 21 is substantially the same as the length direction of the second support 21, the length direction of the first support 21 is substantially the same as the length direction of the first side plate 11, and the length direction of the second support 22 is substantially the same as the length direction of the second side plate 12.

The upper end of the first support 21 is pivotally connected to the lower end of the first side bracket 11 and the upper end of the second support 22 is pivotally connected to the lower end of the second side bracket 12. Alternatively, the lower ends of the side plates 101 of the first support 21 and the first side plate 11 are pivotally connected, and the upper end of the second support 22 is pivotally connected to the lower end of the side plate 101 of the second side plate 12.

Further, the pivotal connection between the first support 21 and the side plate 101 of the first side bracket 11 is located below the top plate 102 of the first side bracket 11, that is, a section of the side plate 101 of the first side bracket 11, which is not provided with the top plate 102, is pivotally connected to the first support 21. The pivotal connection between the second support 22 and the side plate 101 of the second side plate 12 is located below the top plate 102 of the second side plate 12, that is, the section of the side plate 101 of the second side plate 12, which is not provided with the top plate 102, is pivotally connected to the second support 22.

The second cleat 23 is connected between the first support 21 and the second support 22 and is positioned substantially horizontally. In other words, one end of the second cleat 23 is connected to the first support 21, the other end of the second cleat 23 is connected to the second support 22, and the second cleat 23 is arranged substantially parallel to the horizontal plane, the second cleat 23 being arranged parallel to the first cleat 13.

A plurality of second cleats 23 are spaced apart along the length of the first support 21. Alternatively, the plurality of second cleats 23 are evenly spaced along the length of the first support 21, i.e., the distance between adjacent second cleats 23 is the same.

In some embodiments, the first support 21 is a first channel, the second support 22 is a second channel, and the slot of the first channel and the slot of the second channel are opposite. In other words, the notch of the first channel steel and the notch of the second channel steel are both arranged towards the inside.

The first end of second antiskid plate 23 links to each other with the medial surface and the interior top surface of first channel-section steel, and the second end of second antiskid plate 23 links to each other with the medial surface and the interior top surface of second channel-section steel.

In some embodiments, second ladder 2 further includes a first rest 24 and a second rest 25, first rest 24 being connected to first support 21, and second rest 25 being connected to second support 22 and disposed opposite first rest 24. As shown in fig. 5, a first handrail 24 is disposed on the first supporting member 21, a second handrail 25 is disposed on the second supporting member 22, the first handrail 24 and the second handrail 25 are arranged in parallel and at intervals, and an operator can hold the first handrail 24 and/or the second handrail 25 when going up and down the second ladder 2, so as to ensure the safety of the operator.

Optionally, each of the first handrail 24 and the second handrail 25 includes a plurality of first columns, a plurality of second columns and a third column, the plurality of first columns are uniformly spaced along the length direction of the first support 21, the length direction of the second columns is consistent with the length direction of the first support 21, the second columns are connected with the plurality of first columns, and the third column extends downward from the lower end of the second columns.

The lower end of the first column of the first handrail 24 is connected with the first support 21, the length direction of the first column is substantially perpendicular to the length direction of the first support 21, the upper end of the first column is connected with the second column, and the lower end of the third column is connected with the first support 21.

The lower end of the first column of the second rest 25 is connected to the second support 22, and the length direction of the first column is substantially perpendicular to the length direction of the second support 22, the upper end of the first column is connected to the second column, and the lower end of the third column is connected to the second support 22.

In some embodiments, the foldable escalator 100 for an electric shovel further includes a pin 3, the pin 3 penetrates through the first support 21 and the second support 22, a first end of the pin 3 is connected to the first support 21 and the first side plate 11, and a second end of the pin 3 is connected to the second support 22 and the second side plate 12. In other words, one end of the pin 3 is connected to the first support 21 and the side plate 101 of the first side plate 11, and the other end of the pin 3 is connected to the second support 22 and the side plate 101 of the second side plate 12.

In some embodiments, the driving device 300 includes a cylinder 31, an air storage tank 32, and a solenoid valve 33, wherein the cylinder 31 is mounted on the first ladder 1 or the platform 201, and the piston rod of the cylinder 31 is connected to the second ladder 2. Alternatively, as shown in fig. 1 and 5, the piston rod of the cylinder 31 extends out of the cylinder body of the cylinder 31 from the left end thereof, the first ladder 1 is provided at the lower side thereof with a first connection plate 301, the right end of the cylinder body of the cylinder 31 is connected to the first connection plate 301, and the left end of the piston rod of the cylinder 31 is connected to the second ladder 2.

Specifically, the lower side of the second ladder 2 is provided with a second connecting plate 302, and the left end of the piston rod of the cylinder 31 is connected to the second connecting plate 302.

As shown in fig. 6, an air tank 32 is connected to the air cylinder 31 for supplying air to the air cylinder 31. The solenoid valve 33 is connected between the cylinder 31 and the air tank 32 for controlling air supply to the cylinder 31, i.e., the solenoid valve 33 can control air supply and air cut-off. Further, the solenoid valve 33 is a two-position three-way solenoid valve.

In some embodiments, the actuating device 300 further comprises a one-way valve 34, a filter 35, a pressure gauge 36, a water-dividing cartridge 37, an oil mist device 38, and a switch 39.

A check valve 34 is connected between the air tank 32 and the solenoid valve 33. By providing the check valve 34, the gas can be prevented from flowing in the reverse direction.

A filter 35 is connected between the air reservoir 32 and the one-way valve 34. By providing the filter 35, the gas flowing out of the gas tank 32 can be filtered, and impurities mixed in the gas can be prevented from entering the cylinder 31.

A pressure gauge 36 is connected between the air reservoir 32 and the filter 35. By providing the pressure gauge 36, the pressure of the gas flowing out can be displayed in real time, so that the amount of gas supplied to the cylinder 31 can be controlled at any time.

A water knock out cartridge 37 is connected between the filter 35 and the one-way valve 34. By providing the water separation filter 37, the gas flowing out of the filter 35 can be filtered for the second time, and impurities doped in the gas are prevented from entering the cylinder 31.

The oil mist device 38 is connected between the water dividing filter element 37 and the check valve 34. By providing the oil mist 38, the lubricating oil can be injected into the cylinder 31 with the gas, to lubricate the cylinder 31,

a switch 39 is connected between the reservoir 32 and the pressure gauge 36 to open the reservoir 32 and close the reservoir 32.

In some embodiments, in the deployed position, the length direction of the first ladder 1 and the length direction of the second ladder 2 are inclined by substantially 45 degrees with respect to the horizontal direction. As shown in fig. 1 and 2, the first ladder 1 extends leftward from the left outer edge of the platform 201 and is inclined downward by 45 degrees. And when the second ladder 2 is in the unfolded position, the length direction of the second ladder 2 is substantially the same as the length direction of the first ladder 1.

An electric shovel according to an embodiment of the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1 to 6, an electric shovel according to an embodiment of the present invention includes a foldable escalator 100 and a vehicle body 200. The vehicle body 200 has a platform 201 on which an operator can walk.

The foldable escalator 100 includes a first ladder 1, a second ladder 2, and a driving device 300. First ladder 1 includes first side extension board 11, second side extension board 12 and a plurality of first antiskid ribbed tile 13, and the upper end and the platform 201 of first side extension board 11 meet, and the upper end and the platform 201 of second side extension board 12 meet, and first side extension board 11 and second side extension board 12 extend and downward sloping 45 degrees from the right side to the left set up, and second side extension board 12 is relative and the interval arrangement with first side extension board 11.

Each of the first side plate 11 and the second side plate 12 includes a side riser 101, a top plate 102, and a bottom plate 103. The side standing plate 101 extends from right to left and is inclined downward by 45 degrees, and the top plate 102 and the bottom plate 103 are arranged oppositely in the width direction of the side standing plate 101.

The top plate 102 of the first side support plate 11 extends from the upper edge of the side support plate 101 to the second side support plate 12, and the bottom plate 103 of the first side support plate 11 extends from the lower edge of the side support plate 101 to the second side support plate 12; top plate 102 of second side brace 12 extends from the upper edge of side brace 101 toward first side brace 11, and bottom plate 103 of second side brace 12 extends from the lower edge of side brace 101 toward first side brace 11.

The top plate 102 of the first side support plate 11 and the top plate 102 of the second side support plate 12 are arranged at intervals, and the bottom plate 103 of the second side support plate 11 and the bottom plate 103 of the second side support plate 12 are arranged at intervals.

In the first side support plate 11 and the second side support plate 12, the upper end of the top plate 102 is flush with the upper end of the bottom plate 103 and the upper end of the side vertical plate 101, the lower end of the bottom plate 103 is flush with the lower end of the side vertical plate 101, and the lower end of the top plate 102 is located above the lower end of the bottom plate 103, that is, the length of the bottom plate 103 is smaller than that of the top plate 102.

Specifically, the top plate 102 of the first side support plate 11 and the top plate 102 of the second side support plate 12 are provided with a handrail. In other words, the handrails are arranged on two sides of the first ladder 1, so that the operator can hold the handrails when getting on or off the first ladder 3, and the safety of the operator is guaranteed.

Each first cleat 13 is positioned substantially horizontally, and one end of the first cleat 13 is connected to the inner surface of the side plate 101 of the first side bracket 11 and to the inner surface of the top plate 102 of the first side bracket 11. The other end of the first cleat 13 is connected to the inner surface of the side plate 101 of the second side bracket 12 and to the inner surface of the top plate 102 of the second side bracket 12. The plurality of first cleat plates 13 are arranged at regular intervals along the length direction of the first side bracket 11.

The second ladder 2 comprises a first support 21, a second support 22, a plurality of second cleats 23, a first rest 24 and a second rest 25. The first support piece 21 is a first channel steel, the second support piece 22 is a second channel steel, the first channel steel and the second channel steel are arranged in parallel at intervals, and a notch of the first channel steel is opposite to a notch of the second channel steel. The first end of every second antiskid ribbed tile 23 links to each other with the medial surface and the interior top surface of first channel-section steel, and the second end of second antiskid ribbed tile 23 links to each other with the medial surface and the interior top surface of second channel-section steel. The second plurality of cleats 23 are evenly spaced along the length of the first support 21.

The round pin axle 3 passes the lower extreme of the side riser 101 of first side extension board 11 in proper order, the first end on the first channel-section steel length direction, the first end on the second channel-section steel length direction and the lower extreme of the side riser 101 of second side extension board 12, round pin axle 3 is located the below of the roof 102 of first side extension board 11 and the below of the roof 102 of second side extension board 12, but pivot ground first end on the first channel-section steel length direction and the lower extreme of the side riser 101 of first side extension board 11, but pivot ground connects the lower extreme of the first end on the second channel-section steel length direction and the side riser 101 of second side extension board 12, so that second ladder 2 is rotatable between expansion position and folding position for first ladder 1.

First handrail 24 and second handrail 25 all include first post, second post and third post, and first post is a plurality of, and the even interval arrangement of length direction of first channel-section steel is followed to a plurality of first posts, and the length direction of second post is unanimous with the length direction of first channel-section steel, and the second post links to each other with a plurality of first posts, and the third post is from the lower extreme downwardly extending of second post.

Wherein the lower extreme of the first post of first handrail 24 links to each other with first channel-section steel, and the length direction of first post is perpendicular with the length direction of first channel-section steel roughly, and the upper end of first post links to each other with the second post, and the lower extreme of third post links to each other with first channel-section steel.

The lower extreme of the first post of second rest 25 links to each other with the second channel-section steel, and the length direction of first post is perpendicular with the length direction of second channel-section steel roughly, and the upper end of first post links to each other with the second post, and the lower extreme of third post links to each other with the second channel-section steel.

In the deployed position, the length direction of the first channel steel, the length direction of the second channel steel, the length direction of the first side support plate 11 and the length direction of the second side support plate 12 are the same, and the plurality of second anti-skid plates 23 are placed substantially horizontally. At folding position, the length direction of first channel-section steel and the length direction of first side extension board 11 become predetermined angle, and the length direction of second channel-section steel also becomes above-mentioned predetermined angle with the length direction of second side extension board 11, and the ascending second end of length direction of first channel-section steel is higher than the ascending first end of first channel-section steel length direction, and the ascending second end of length direction of second channel-section steel is higher than the ascending second end of second channel-section steel length direction.

The driving device 300 includes a cylinder 31, an air tank 32, a solenoid valve 33, a check valve 34, a filter 35, a pressure gauge 36, a water-dividing filter element 37, an oil atomizer 38 and a switch 39. The piston rod of the cylinder 31 extends out of the cylinder body of the cylinder 31 from one end thereof. The first connecting plate 301 is provided at the lower side of the first ladder 1, and the other end of the cylinder body of the cylinder 31 is connected to the first connecting plate 301. The lower side of the second ladder 2 is provided with a second connecting plate 302, and the left end of the piston rod of the cylinder 31 is connected with the second connecting plate 302 to drive the second ladder 2 to rotate between the unfolding position and the folding position.

An air tank 32 is connected to the air cylinder 31 for supplying air to the air cylinder 31. The solenoid valve 33 is a two-position three-way solenoid valve and is connected between the cylinder 31 and the air tank 32 for controlling the supply of air to the cylinder 31. A check valve 34 is connected between the air tank 32 and the solenoid valve 33 to prevent reverse flow of gas. A filter 35 is connected between the gas container 32 and the check valve 34 to filter the gas flowing out of the gas container 32 to prevent impurities doped in the gas from entering the cylinder 31. The pressure gauge 36 is connected between the gas tank 32 and the filter 35 to display the pressure of the outflow gas in real time, so that the amount of gas supplied to the cylinder 31 can be controlled at any time. The water diversion filter element 37 is connected between the filter 35 and the check valve 34 to secondarily filter the gas flowing out of the filter 35 to prevent impurities doped in the gas from entering the cylinder 31. The oil mist 38 is connected between the water dividing filter 37 and the check valve 34 to inject the lubricating oil with the gas into the cylinder 31 to lubricate the cylinder 31. A switch 39 is connected between the reservoir 32 and the pressure gauge 36 to open the reservoir 32 and close the reservoir 32.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In addition to this, the present invention is,

in the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A foldable escalator for an electric shovel, comprising:

the length direction of the first ladder inclines relative to the horizontal direction, and the upper end of the first ladder is connected with a platform of the electric shovel;

a second ladder having one end pivotally connected to the first ladder such that the second ladder is rotatable relative to the first ladder between an extended position in which a length direction of the second ladder is substantially coincident with a length direction of the first ladder and a collapsed position in which the second ladder is at a predetermined angle to the first ladder and another end of the second ladder is higher than the one end of the second ladder;

and the driving device is connected with the second ladder to drive the second ladder to rotate.

2. The foldable escalator for an electric shovel according to claim 1, wherein said first ladder comprises:

the length direction of the first side support plate is inclined relative to the horizontal direction;

a second side support plate, the second side support plate and the first side support plate are arranged in parallel and at intervals;

the first anti-skid plates are connected between the first side support plate and the second side support plate and are arranged substantially horizontally, and the first anti-skid plates are arranged at intervals along the length direction of the first side support plate.

3. The foldable escalator for an electric shovel according to claim 2, wherein each of the first side support plate and the second side support plate comprises a side vertical plate, a top plate and a bottom plate, an outer edge of the top plate is connected with an upper edge of the side vertical plate, an outer edge of the bottom plate is connected with a lower edge of the side vertical plate, an upper end of the top plate and an upper end of the bottom plate are flush with an upper end of the side vertical plate, a lower end of the bottom plate is flush with a lower end of the side vertical plate, and a length of the top plate is smaller than a length of the bottom plate.

4. The foldable escalator for an electric shovel according to claim 2, wherein said second ladder comprises:

a first support member, a first end of the first support member being rotatably connected to the first ladder;

the first support piece and the second support piece are arranged in parallel and at intervals, and the first end of the second support piece is rotatably connected with the first ladder;

a plurality of second cleats connected between the first support and the second support and positioned substantially horizontally, the plurality of second cleats being spaced apart along a length of the first support.

5. The foldable escalator for an electric shovel according to claim 4, wherein the first support is a first channel steel, the second support is a second channel steel, a notch of the first channel steel is opposite to a notch of the second channel steel, a first end of the second anti-skid plate is connected to an inner side surface and an inner top surface of the first channel steel, and a second end of the second anti-skid plate is connected to an inner side surface and an inner top surface of the second channel steel.

6. The foldable escalator for an electric shovel according to claim 4, wherein said second ladder further comprises:

the first handrail is connected with the first supporting piece;

7. The foldable escalator for an electric shovel according to claim 4, further comprising a pin extending through the first and second supports, a first end of the pin connecting the first support and the first side plate and a second end of the pin connecting the second support and the second side plate.

8. The foldable escalator for electric shovels according to claim 1, characterized in that said drive means comprises:

the cylinder body of the cylinder is arranged on the first ladder, and the piston rod of the cylinder is connected with the second ladder;

the air storage tank is connected with the air cylinder and used for supplying air to the air cylinder;

and the electromagnetic valve is connected between the air cylinder and the air storage tank and used for controlling air supply to the air cylinder.

9. The foldable escalator for electric shovels of claim 8, wherein said drive device further comprises:

the one-way valve is connected between the air storage tank and the electromagnetic valve;

a filter connected between the air reservoir and the one-way valve;

the pressure gauge is connected between the air storage tank and the filter;

the water diversion filter element is connected between the filter and the one-way valve;

the oil atomizer is connected between the water distribution filter element and the one-way valve;

and the switch is connected between the gas storage tank and the pressure gauge.

10. The foldable escalator for an electric shovel according to any one of claims 1-9, wherein in the deployed position, the length direction of the first ladder and the length direction of the second ladder are inclined at substantially 45 degrees with respect to the horizontal.

11. An electric shovel, comprising:

a vehicle body having a platform;

escalator, which is a foldable escalator for an electric shovel according to any one of claims 1-10, the upper end of the first ladder of which is connected to the platform.