Overhead maintenance platform and turnable ladder stand thereof

Abstract

The invention provides a turnover ladder stand for an overhead maintenance platform and the overhead maintenance platform. The turnover ladder stand comprises a turnover frame, a first buffer part, a folding frame, a rotating rod, a connecting rod, a second buffer part and an extension ladder, a first hinge part, a second hinge part, a third hinge part and a fourth hinge part are arranged on one side of the rotating frame, a fifth hinge part is arranged on the opposite side of the rotating frame, and a sixth hinge part is arranged at the top of the rotating frame; one side of the folding frame is hinged to a fourth hinge part, the other side is provided with a seventh hinge part, and the middle of the folding frame is provided with an eighth hinge part; two ends of the connecting rod are respectively hinged with an eighth hinge part and a rotating rod, the other end of the rotating rod is hinged with a first buffer part, the other end of the first buffer part is hinged with the second hinge part, and the middle of the rotating rod is hinged with a third hinge part; the top end of the extension ladder is hinged with a first hinge part; one end of the second buffer piece is hinged to the fifth hinge part. Operators can conveniently get on and off the maintenance platform, and daily spot inspection, cleaning and maintenance work on equipment are facilitated.

Description

Technical Field

[0001] The invention relates to an improvement of an overhead maintenance platform, in particular to a reversible ladder and an overhead maintenance platform. Background Art

[0002] During routine inspections of existing equipment, inspection personnel use fixed vertical ladders on site to go up and down the inspection platform to inspect, clean and repair equipment. Climbing up and down the ladders is very inconvenient and poses a safety hazard. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a reversible ladder for an overhead maintenance platform, comprising a reversible frame, a first buffer, a folding frame, a rotating rod, a connecting rod, a second buffer and a telescopic ladder.

[0004] A first hinge, a second hinge, a third hinge and a fourth hinge are provided on one side of the rotating frame, a fifth hinge is provided on the other side opposite to the rotating frame, and a sixth hinge is provided on the top. One side of the folding frame is hingedly connected to the fourth hinge, and the other side is provided with a seventh hinge, and the middle part of the folding frame is provided with an eighth hinge. The two ends of the connecting rod are respectively hinged to the eighth hinge and one end of the rotating rod, the other end of the rotating rod is hinged to one end of the first buffer, the other end of the first buffer is hinged to the second hinge, and the middle part of the rotating rod is hinged to the third hinge. The top end of the telescopic ladder is hinged to the first hinge, and the middle part is hinged to the seventh hinge. One end of the second buffer is hinged to the fifth hinge, and the other end is provided with a first connecting end for hingedly connecting to the maintenance platform, and the sixth hinge is used to hinge the flip frame to the maintenance platform.

[0005] Through the above structure, the telescopic ladder can drive the folding frame to rotate upward during the compression process, and the rotation rod can be rotated through the transmission of the connecting rod, thereby lengthening the first buffer; on the contrary, during the extension of the telescopic ladder, the folding frame rotates downward to compress the first buffer. When not in use, the telescopic ladder can be retracted and the flip frame can be flipped up as a whole to save space; when it is needed, the flip frame can be flipped down and the telescopic ladder can be lengthened for use.

[0006] Furthermore, the flip frame further includes a ninth hinged portion, which is arranged on the same side of the flip frame as the fifth hinged portion; and further includes a third buffer and a transition rod, one end of the transition rod is hinged to the ninth hinged portion, and the other end is hinged to one end of the third buffer, and the other end of the third buffer is provided with a second connection end for hingedly connecting the maintenance platform. The transition rod can make the flip frame rotate more smoothly.

[0007] Furthermore, the bottom end of the telescopic ladder is provided with anti-slip legs.

[0008] Furthermore, each buffer member is an air spring, a hydraulic spring or a damping rod.

[0009] Furthermore, the flip frame includes a first crossbar, a second crossbar, a third crossbar, and a first longitudinal bar and a second longitudinal bar connecting the two ends of each crossbar. A first hinge and a fifth hinge are respectively provided at both ends of the first crossbar, a fourth hinge is respectively provided at both ends of the third crossbar, the second hinge is arranged in the middle of the first crossbar, the third hinge is arranged in the middle of the second crossbar, and the folding frame is hinged to the two fourth hinges at the same time.

[0010] Further, the folding frame includes a fourth crossbar and a third longitudinal bar and a fourth longitudinal bar connected at both ends of the fourth crossbar, an eighth hinge portion is arranged on the fourth crossbar, the third longitudinal bar and the fourth longitudinal bar are hinged on the corresponding fourth hinge portion, and a seventh hinge portion is respectively arranged at the other end of the third longitudinal bar and the fourth longitudinal bar. The telescopic ladder includes folding components on both sides and a pedal component in the middle, and the folding components are hinged to the first hinge portion and the seventh hinge portion on the corresponding side.

[0011] The present invention also provides an overhead maintenance platform, comprising a platform and a guardrail, and also comprising the above-mentioned reversible ladder, wherein an opening is provided on the guardrail, and the outer contour of the reversible frame is adapted to the opening. The sixth hinged portion is hinged on the platform corresponding to the opening, so that the reversible frame can be flipped downward at the opening. A tenth hinged portion is provided on the lower side of the platform, and the first connecting end is hinged on the tenth hinged portion.

[0012] When the telescopic ladder is not in use, the flip frame is flipped up to the open position to serve as a guardrail; when the telescopic ladder is needed, the flip frame is flipped down, the telescopic ladder is pulled out and can be used, and at this time, personnel can climb onto the platform more safely through the opening position.

[0013] Furthermore, the flip frame further comprises a ninth hinged portion, which is arranged on the same side of the flip frame as the fifth hinged portion. It further comprises a third buffer and a transition rod, one end of the transition rod is hinged to the ninth hinged portion, and the other end is hinged to one end of the third buffer, and the other end of the third buffer is provided with a second connecting end. An eleventh hinged portion is arranged on the lower side of the platform, and the second connecting end is hinged to the eleventh hinged portion.

[0014] Furthermore, the flip frame is also provided with a limit block and a safety lock. The limit block is arranged on the same side where the flip frame is provided with the fifth hinged portion, and the safety lock is used to lock the flip frame on the guardrail.

[0015] Furthermore, it also includes an auxiliary pull hook for opening and closing the safety lock and flipping up or down the flip frame, so as to facilitate the operation of personnel when they are on the lower side of the overhead maintenance platform.

[0016] The present invention can facilitate operators to get on and off the maintenance platform, and is convenient for daily spot inspection, cleaning and maintenance of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the reversible ladder of the present invention (the telescopic ladder is omitted); Figure 2 It is a schematic diagram of the telescopic ladder of the maintenance platform of the present invention in the unfolded state; Figure 3 It is a schematic diagram of the intermediate state of the telescopic ladder of the maintenance platform of the present invention (the telescopic ladder is omitted); Figure 4 Schematic diagram of the telescopic ladder of the maintenance platform of the present invention in the retracted state (the telescopic ladder is omitted); Figure 5 This is a schematic diagram of the turning frame of the maintenance platform of the present invention in the turned-up state (the telescopic ladder is omitted); In the figure: 1, flip frame; 2, first buffer; 3, folding frame; 4, rotating rod; 5, connecting rod; 6, second buffer; 7, telescopic ladder; 8, first hinge; 9, second hinge; 10, third hinge; 11, fourth hinge; 12, fifth hinge; 13, sixth hinge; 14, seventh hinge; 15, eighth hinge; 16, first connecting end; 17, ninth hinge; 18, third buffer; 19. Transition rod; 20. Second connection end; 21. First cross bar; 22. Second cross bar; 23. Third cross bar; 24. First longitudinal bar; 25. Second longitudinal bar; 26. Fourth cross bar; 27. Third longitudinal bar; 28. Fourth longitudinal bar; 29. ​​Folding assembly; 30. Pedal assembly; 31. Platform; 32. Guardrail; 33. Opening; 34. Tenth hinge; 35. Eleventh hinge; 36. Limit block; 37. Safety lock. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1:

[0021] See also Figure 1 The overhead maintenance platform of this embodiment is a reversible ladder, which includes a reversible frame 1, a first buffer member 2, a folding frame 3, a rotating rod 4, a connecting rod 5, a second buffer member 6 and a telescopic ladder 7.

[0022] The rotating frame is provided with a first hinge part 8, a second hinge part 9, a third hinge part 10 and a fourth hinge part 11 on one side, a fifth hinge part 12 on the other side opposite to the rotating frame, and a sixth hinge part 13 on the top. The folding frame 3 is hingedly connected to the fourth hinge part 11 on one side, and a seventh hinge part 14 is provided on the other side, and an eighth hinge part 15 is provided in the middle of the folding frame 3. The two ends of the connecting rod 5 are respectively hinged to the eighth hinge part 15 and one end of the rotating rod 4, the other end of the rotating rod 4 is hinged to one end of the first buffer 2, the other end of the first buffer 2 is hinged to the second hinge part 9, and the middle of the rotating rod 4 is hingedly connected to the third hinge part 10. The top of the telescopic ladder 7 is hinged to the first hinge part 8, and the middle is hinged to the seventh hinge part 14. One end of the second buffer member 6 is hinged to the fifth hinged part 12, and the other end is provided with a first connecting end 16 for hingedly connecting the maintenance platform. The sixth hinged part 13 is used to hinge the flip frame 1 on the maintenance platform. By setting the second buffer member 6, the flip frame 1 can be controlled during the up and down rotation.

[0023] Through the above structure, the telescopic ladder 7 can drive the folding frame 3 to rotate upward during the compression process, and the rotating rod 4 can be rotated through the transmission of the connecting rod 5, so as to lengthen the first buffer 2; on the contrary, during the extension of the telescopic ladder 7, the folding frame 3 rotates downward to compress the first buffer 2. The first buffer 2 can make the extension and retraction process of the telescopic ladder 7 controllable. When not in use, the telescopic ladder 7 can be retracted and the flip frame 1 can be flipped up as a whole to save space; when it is needed, the flip frame 1 can be flipped down and the telescopic ladder 7 can be lengthened for use. The bottom of the telescopic ladder 7 is also provided with anti-slip legs, which is safer during use.

[0024] In this embodiment, the flip frame 1 further includes a ninth hinge 17, which is arranged on the same side of the flip frame 1 as the fifth hinge 12. It also includes a third buffer 18 and a transition rod 19, one end of the transition rod 19 is hinged to the ninth hinge 17, and the other end is hinged to one end of the third buffer 18, and the other end of the third buffer 18 is provided with a second connecting end 20 for hingedly connecting the maintenance platform. The transition rod 19 can make the rotation process of the flip frame 1 smoother. Each buffer in this embodiment is preferably an air spring, a hydraulic spring or a damping rod.

[0025] The flip frame 1 of this embodiment includes a first crossbar 21, a second crossbar 22, a third crossbar 23, and a first longitudinal bar 24 and a second longitudinal bar 25 connecting the two ends of each crossbar. A first hinge 8 and a fifth hinge 12 are respectively provided at both ends of the first crossbar 21, a fourth hinge 11 is respectively provided at both ends of the third crossbar 23, the second hinge 9 is arranged in the middle of the first crossbar 21, the third hinge 10 is arranged in the middle of the second crossbar 22, and the folding frame 3 is hinged to the two fourth hinges 11 at the same time.

[0026] The folding frame 3 includes a fourth crossbar 26 and a third longitudinal bar 27 and a fourth longitudinal bar 28 connecting the two ends of the fourth crossbar 26. The eighth hinge 15 is arranged on the fourth crossbar 26. The third longitudinal bar 27 and the fourth longitudinal bar 28 are hinged on the corresponding fourth hinge 11. The other ends of the third longitudinal bar 27 and the fourth longitudinal bar 28 are respectively provided with a seventh hinge 14. The telescopic ladder 7 includes folding components 29 on both sides and a pedal component 30 in the middle. The folding component 29 is hinged to the first hinge 8 and the seventh hinge 14 on the corresponding side.

[0027] Embodiment 2:

[0028] See also Figure 2-5 The overhead maintenance platform of this embodiment includes a platform 31 and a guardrail 32, as well as the reversible ladder in Embodiment 1. The guardrail 32 is provided with an opening 33, and the outer contour of the reversible frame 1 is adapted to the opening 33. The sixth hinged portion 13 is hinged on the platform 31 corresponding to the opening 33, so that the reversible frame 1 can be turned downward at the opening 33. The lower side of the platform 31 is provided with a tenth hinged portion 34, and the first connecting end 16 is hinged on the tenth hinged portion 34.

[0029] When the telescopic ladder 7 is not in use, the flip frame 1 is flipped up to the opening 33 to serve as a guardrail; when the telescopic ladder 7 is needed, the flip frame 1 is flipped down, the telescopic ladder 7 is pulled out and can be used, and at this time, a person can climb onto the platform more safely through the opening 33.

[0030] Preferably, in this embodiment, when the flip frame 1 includes the ninth hinge 17 , the third buffer 18 and the transition rod 19 , an eleventh hinge 35 is provided on the lower side of the platform 31 , and the second connecting end 20 is hinged on the eleventh hinge 35 .

[0031] Preferably, a limit block 36 and a safety lock 37 are also provided on the flip frame 1. The limit block 36 is arranged on the same side of the flip frame 1 where the fifth hinge portion 12 is provided, and is used to prevent the flip frame 1 from over-flipping. The safety lock 37 is used to lock the flip frame 1 on the guardrail 32, so that the flip frame 1 is more reliable when used as a guardrail. At the same time, when the folding ladder is not in use, the flip frame 1 will not flip outward, which is safer.

[0032] It also includes an auxiliary pull hook for opening and closing the safety lock 37 and flipping up or down the flip frame 1, so as to facilitate the operation of personnel when they are on the lower side of the overhead maintenance platform.

[0033] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An overhead maintenance platform reversible ladder, characterized in that: It includes a flip frame, a first buffer, a folding frame, a rotating rod, a connecting rod, a second buffer and a telescopic ladder; a first hinge part, a second hinge part, a third hinge part and a fourth hinge part are provided on one side of the rotating frame, a fifth hinge part is provided on the other side opposite to it, and a sixth hinge part is provided on the top; one side of the folding frame is hingedly connected to the fourth hinge part, the other side is provided with a seventh hinge part, and an eighth hinge part is provided in the middle of the folding frame; two ends of the connecting rod are respectively hinged to the eighth hinge part and one end of the rotating rod, the other end of the rotating rod is hinged to one end of the first buffer, the other end of the first buffer is hinged to the second hinge part, and the middle part of the rotating rod is hingedly connected to the third hinge part; the top end of the telescopic ladder is hinged to the first hinge part, and the middle part is hinged to the seventh hinge part; one end of the second buffer is hinged to the fifth hinge part, and the other end is provided with a first connecting end for hingedly connecting the maintenance platform; the sixth hinge part is used to hinge the flip frame to the maintenance platform.

2. The reversible ladder for an overhead maintenance platform according to claim 1 is characterized in that: The flip frame also includes a ninth hinged portion, which is arranged on the same side of the flip frame as the fifth hinged portion; it also includes a third buffer and a transition rod, one end of the transition rod is hinged to the ninth hinged portion, and the other end is hinged to one end of the third buffer, and the other end of the third buffer is provided with a second connecting end for hingedly connecting the maintenance platform.

3. The reversible ladder for an overhead maintenance platform according to claim 1 is characterized in that: The bottom end of the telescopic ladder is provided with an anti-skid support leg.

4. The overhead maintenance platform reversible ladder according to claim 1 is characterized in that: Each buffer is an air spring, a hydraulic spring or a damping rod.

5. The reversible ladder for an overhead maintenance platform according to any one of claims 1 to 4, characterized in that: The flip frame includes a first cross bar, a second cross bar, a third cross bar, and a first longitudinal bar and a second longitudinal bar connecting the two ends of each cross bar; a first hinge part and a fifth hinge part are respectively provided at both ends of the first cross bar, a fourth hinge part is respectively provided at both ends of the third cross bar, the second hinge part is arranged in the middle of the first cross bar, the third hinge part is arranged in the middle of the second cross bar, and the folding frame is hinged to the two fourth hinge parts at the same time.

6. The reversible ladder for an overhead maintenance platform according to claim 5 is characterized in that: The folding frame includes a fourth cross bar and a third longitudinal bar and a fourth longitudinal bar connecting the two ends of the fourth cross bar, the eighth hinge portion is arranged on the fourth cross bar, the third longitudinal bar and the fourth longitudinal bar are hinged on the corresponding fourth hinge portion, and the other end of the third longitudinal bar and the fourth longitudinal bar is respectively provided with a seventh hinge portion; the telescopic ladder includes folding components on both sides and a pedal component in the middle, and the folding components are hinged to the first hinge portion and the seventh hinge portion on the corresponding side.

7. An overhead maintenance platform, comprising a platform and a guardrail, characterized in that: It also includes the reversible ladder as described in claim 1, wherein an opening is provided on the guardrail, and the outer contour of the reversible frame is adapted to the opening; the sixth hinged portion is hinged on the platform corresponding to the opening, so that the reversible frame can be flipped downward at the opening; a tenth hinged portion is provided on the lower side of the platform, and the first connecting end is hinged on the tenth hinged portion.

8. The overhead maintenance platform according to claim 7, characterized in that: The flip frame also includes a ninth hinged portion, which is arranged on the same side of the flip frame where the fifth hinged portion is arranged; it also includes a third buffer and a transition rod, one end of the transition rod is hinged to the ninth hinged portion, and the other end is hinged to one end of the third buffer, and the other end of the third buffer is provided with a second connecting end; an eleventh hinged portion is arranged on the lower side of the platform, and the second connecting end is hinged to the eleventh hinged portion.

9. The overhead maintenance platform according to claim 7, characterized in that: The flip frame is also provided with a limit block and a safety lock. The limit block is arranged on the same side where the flip frame is provided with the fifth hinged portion. The safety lock is used to lock the flip frame on the guardrail.

10. The overhead maintenance platform according to claim 9, characterized in that: It also includes auxiliary pull hooks for opening and closing the safety lock and flipping the rack up or down.

Images