Engineering machinery rotary table assembly and engineering machinery

Abstract

The engineering machinery rotary table assembly comprises a rotary table base, at least one walking board and at least one guardrail, the walking board is connected to the rotary table base in a turnover mode, and the walking board has a first turnover state and a second turnover state. The walking board in the first overturning state is locked and fixed to the side face of the rotary table of the rotary table base, the walking board in the second overturning state is used for people to walk, when the walking board is in the first overturning state, the guardrail is connected to the side face of the walking board, and when the walking board is in the second overturning state, the guardrail is connected to the side face of the walking board. The guardrail is connected to the walking board, and a walking channel is formed among the guardrail, the walking board and the rotary table base. The guardrails of the engineering machinery rotary table assembly do not need to be separated from engineering machinery, the positions for stacking the guardrails do not need to be prepared, a transportation protection device does not need to be additionally arranged, and the guardrails are not prone to being lost and damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering equipment, and in particular to an engineering machinery turntable assembly and engineering machinery. Background Art

[0002] In order to facilitate getting on and off the construction machinery, or to move from one area of ​​the construction machinery to another, a passage device needs to be installed on the construction machinery.

[0003] The existing passage device includes a walkway and a guardrail. The walkway is flippably connected to the turntable assembly, and the guardrail is detachably connected to the walkway. A walking passage for people to walk on is formed between the guardrail, the walkway and the turntable assembly.

[0004] When the construction machinery is working, the walkway needs to be flipped to a horizontal state and the guardrail needs to be installed on the walkway. When the construction machinery needs to be transported, the walkway and guardrail need to be removed from the turntable assembly, or only the guardrail needs to be removed. If both the walkway and guardrail are removed, not only will the removal and installation workload be enormous, but there is no fixed location for the removed walkway and guardrail, and transportation protective devices will also need to be prepared to protect the walkway and guardrail. The walkway, guardrail, and protective devices are prone to loss or damage. If only the guardrail is removed, the walkway needs to be flipped to the side of the turntable assembly, resulting in an increase in the width of the turntable assembly and affecting the width limit. There is no fixed location for the removed guardrail, and transportation protective devices will also need to be prepared to protect the guardrail. The guardrail and protective devices are prone to loss or damage. Summary of the Invention

[0005] In view of this, the present invention provides a turntable assembly for engineering machinery, in which the guardrail does not need to be separated from the engineering machinery, there is no need to prepare a location for stacking the guardrail, there is no need to add a transportation protection device, and the guardrail is not easily lost or damaged.

[0006] A turntable assembly of engineering machinery includes a turntable base, at least one walkway and at least one guardrail, wherein the walkway is flippably connected to the turntable base, and the walkway includes a first flipping state and a second flipping state. The walkway in the first flipping state is locked to the turntable side of the turntable base, and the walkway in the second flipping state is for people to walk on. When the walkway is in the first flipping state, the guardrail is connected to the side of the walkway. When the walkway is in the second flipping state, the guardrail is connected to the walkway, and a walking passage is formed between the guardrail, the walkway and the turntable base.

[0007] Optionally, when the walkway is in the first flipping state, the guardrail is connected to the side of the walkway using a fastening assembly; when the walkway is in the second flipping state, the guardrail is connected to the walkway using the fastening assembly.

[0008] Optionally, at least two mounting tubes are fixed on the side of the walkway away from the turntable base, the guardrail includes at least two support columns, and a limiting plate is fixed to the outer wall of each support column. When the walkway is in the second flipping state, the end of each support column is installed in the mounting tube, the limiting plate abuts against the upper end of the mounting tube, and the fastening assembly is connected to the end of the support column.

[0009] Optionally, a first threaded hole is provided at the end of each support column, and the fastening assembly includes a pad and a first bolt, the pad is provided at the lower end of the mounting tube, and the first bolt passes through the pad and is connected in cooperation with the first threaded hole.

[0010] Optionally, at least two second threaded holes are provided on the side of the walkway, and at least two through holes are provided on the guardrail; when the walkway is in the first flipping state, the guardrail is arranged on the side of the walkway, and each through hole is arranged corresponding to each second threaded hole, the pad is arranged corresponding to the through hole, and the first bolt passes through the pad and the through hole and is connected with the second threaded hole.

[0011] Optionally, a limit frame is connected to the side of the walkway, a limit groove is formed between the limit frame and the walkway, at least two second threaded holes are provided on the limit frame, the guardrail is provided with a connector, and the connector is located between two adjacent support columns; when the walkway is in the first flipping state, the guardrail is arranged on the side of the walkway, the connector is arranged in the limit groove, the pad is arranged corresponding to the second threaded hole, the first bolt passes through the pad and is connected in cooperation with the second threaded hole, and the first bolt cooperates with the limit frame to lock the guardrail.

[0012] Optionally, the walkway includes a first flange adjacent to the turntable base and a second flange arranged opposite to the first flange, and the first flange and the second flange are both provided with multiple grooves for accommodating the guardrail frame; when the guardrail is connected to the side of the walkway, the guardrail frame is correspondingly arranged in each of the grooves.

[0013] Optionally, at least two leveling seats are provided on the turntable base, and each leveling seat is provided with at least one third threaded hole and a second bolt connected to the third threaded hole; when the walkway is in the second flipping state, the edge of the walkway abuts against the second bolt, and rotating the second bolt can adjust the horizontal state of the walkway.

[0014] Optionally, at least two leveling seats are provided on the turntable base, each of the leveling seats is provided with at least one third threaded hole and a second bolt cooperated with the third threaded hole, and at least two fourth threaded holes are provided on the edge of the walkway and a third bolt cooperated with the fourth threaded holes; when the walkway is in the second flipping state, the head of the second bolt and the head of the third bolt abut against each other, and rotating the second bolt and / or the third bolt can adjust the horizontal state of the walkway.

[0015] Optionally, each of the third bolts is connected to a nut, and the nut is located between the edge of the walkway and the head of the third bolt.

[0016] Optionally, the engineering machinery turntable assembly includes a plurality of the walkways, and the plurality of the walkways are arranged side by side along the length direction of the turntable base.

[0017] Optionally, a plurality of leveling seats are provided on the turntable base, each of the leveling seats is provided with at least two of the third threaded holes and at least two of the second bolts, and the plurality of leveling seats are arranged at intervals along the length direction of the turntable base, and two adjacent walkways share one leveling seat, and at least two of the second bolts of the leveling seat respectively abut against the third bolts of two adjacent walkways.

[0018] Optionally, the turntable base is provided with at least two first connecting members, each of which is provided with a first locking hole; the edge of the walkway is provided with at least two second connecting members, each of which is provided with a second locking hole, and each of the first connecting members is rotatably connected to each of the second connecting members through a first pin shaft; when the walkway is in the first flipping state, the first locking hole and the second locking hole are installed with a second pin shaft to lock the walkway; when the walkway is in the second flipping state, the second pin shaft is installed in the first locking hole.

[0019] Optionally, the side surface of the turntable is arranged in a vertical direction, the turntable base includes a connecting wall that is retracted relative to the side surface of the turntable, and each of the first connecting members is fixedly connected to the connecting wall.

[0020] Optionally, each of the first connecting members includes an edge arranged adjacent to the walkway, the edge is coplanar with the side surface of the turntable, or the distance between the edge and the guardrail is greater than the distance between the side surface of the turntable and the guardrail.

[0021] The present application also relates to an engineering machinery, comprising the above-mentioned engineering machinery turntable assembly.

[0022] The engineering machinery turntable assembly of the present invention can connect the guardrail to the side of the walkway during transportation. The guardrail does not need to be separated from the engineering machinery, so there is no need to prepare additional space for stacking the guardrail, and there is no need to add transportation protection devices. The guardrail is not easy to be lost or damaged, which increases the convenience of transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the engineering machinery turntable assembly of the first embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the disassembled structure of the engineering machinery turntable assembly of the first embodiment of the present application.

[0025] Figure 3 yes Figure 1 The diagram shows a structure in which the walkway and guardrail of the engineering machinery turntable assembly are locked to the side of the turntable.

[0026] Figure 4 It is a schematic diagram of the three-dimensional structure of the turntable base of the first embodiment of the present application.

[0027] Figure 5 It is a bottom view schematic diagram of the walkway of the first embodiment of the present application.

[0028] Figure 6 It is a front view schematic diagram of the guardrail of the first embodiment of the present application.

[0029] Figure 7 yes Figure 5 Schematic diagram of the cross-sectional structure of the walkway shown.

[0030] Figure 8 This is a schematic cross-sectional view of the turntable base, walkway and guardrail of the present application in working condition.

[0031] Figure 9 yes Figure 8 A partial enlarged schematic diagram of the turntable base, walkway and guardrail is shown.

[0032] Figure 10 It is a side structural schematic diagram of the walkway of the present application.

[0033] Figure 11 It is a structural schematic diagram of the walkway and guardrail of the second embodiment of the present application in the unfolded state.

[0034] Figure 12 This is a structural schematic diagram of the walkway and guardrail of the second embodiment of the present application in a folded state.

[0035] Figure 13 This is a schematic diagram of the structure of the walkway in the second embodiment of the present application from a bottom view.

[0036] Figure 14 yes Figure 13 Schematic diagram of the cross-sectional structure of the walkway shown.

[0037] Figure 15 It is a side structural schematic diagram of the walkway of the second embodiment of the present application.

[0038] Figure 16 It is a schematic diagram of the front view structure of the guardrail of the second embodiment of the present application. DETAILED DESCRIPTION

[0039] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0040] In the following description, reference is made to the accompanying drawings, which illustrate several embodiments of the present application. It should be understood that other embodiments may be used, and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present application. The following detailed description should not be considered limiting, and the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present application.

[0041] Although the terms "first", "second", etc. are used herein to describe various elements in some instances, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0042] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0043] First embodiment

[0044] Figure 1 This is a schematic diagram of the three-dimensional structure of the engineering machinery turntable assembly of the first embodiment of the present application. Figure 2 This is a schematic diagram of the disassembled structure of the engineering machinery turntable assembly of the first embodiment of the present application. Figure 3 yes Figure 1The schematic diagram of the structure of the turntable assembly of the engineering machinery shown in FIG. Figure 4 This is a schematic diagram of the three-dimensional structure of the turntable base of the first embodiment of the present application. Please refer to Figures 1 to 4 The engineering machinery turntable assembly includes a turntable base 11, at least one walkway 12 and at least one guardrail 13. The walkway 12 is flippably connected to the turntable base 11. The walkway 12 includes a first flipping state and a second flipping state. The walkway 12 in the first flipping state is locked to the turntable side 111 of the turntable base 11, and the walkway 12 in the second flipping state is for people to walk on. When the walkway 12 is in the first flipping state, the guardrail 13 is connected to the side of the walkway 12. When the walkway 12 is in the second flipping state, the guardrail 13 is connected to the walkway 12, and a walking passage is formed between the guardrail 13, the walkway 12 and the turntable base 11.

[0045] When the turntable assembly of the engineering machinery enters the working state, the walkway 12 is unlocked and flipped from the first flipping state to the second flipping state. At this time, the staff can enter and exit the cab through the walking passage.

[0046] When the turntable assembly of the construction machinery needs to be transported, the walkway 12 is flipped from the second flipping state to the first flipping state, and then the walkway 12 is locked. At this time, the walkway 12 and the guardrail 13 are folded into the side surface 111 of the turntable. The transportation width is only increased by the superimposed thickness of the walkway 12 and the guardrail 13, which is 70mm to 100mm, for example 80mm, 85mm, 90mm, 95mm, which can meet the width limit for non-strict transportation requirements.

[0047] The engineering machinery turntable assembly of the present application can connect the guardrail 13 to the side of the walkway 12 during transportation. The guardrail 13 does not need to be separated from the engineering machinery, so there is no need to prepare additional space for stacking the guardrail 13, and there is no need to add transportation protection devices. The guardrail 13 is not easy to be lost or damaged, which increases the convenience of transportation.

[0048] Alternatively, see Figures 1 to 3 When the walkway 12 is in the first flipped state, the guardrail 13 is connected to the side of the walkway 12 using the fastening assembly 14; when the walkway 12 is in the second flipped state, the guardrail 13 is connected to the walkway 12 using the fastening assembly 14. The guardrail 13 of the present application is fixed by the fastening assembly 14 when the walkway 12 is in the first flipped state and the second flipped state. The fastening assembly 14 is not easy to be lost or damaged, so there is no need to add other devices to fix the guardrail 13 during transportation.

[0049] Optionally, Figure 5 This is a bottom view of the walkway of the first embodiment of the present application. Figure 6 This is a front view of the guardrail of the first embodiment of the present application. Figure 1 、 Figure 5 and Figure 6 As shown, at least two mounting tubes 121 are fixed on the side of the walkway 12 away from the turntable base 11, and the guardrail 13 includes at least two support columns 131. The outer wall of each support column 131 is fixed with a limiting plate 132. When the walkway 12 is in the second flipping state, the end of each support column 131 is installed in the mounting tube 121, the limiting plate 132 abuts against the upper end of the mounting tube 121, and the fastening assembly 14 is connected to the end of the support column 131. In this embodiment, the mounting tube 121 is in the shape of a hollow tube; after the support column 131 is inserted into the mounting tube 121 to a certain depth, the limit plate 132 will abut against the upper end of the mounting tube 121, preventing the support column 131 from further extending into the mounting tube 121. At this time, the end face of the support column 131 is flush with the lower end of the mounting tube 121, or the end face of the support column 131 does not exceed the lower end of the mounting tube 121. The fastening assembly 14 is connected to the end face of the support column 131, and locks the support column 131 and the mounting tube 121 together.

[0050] Optionally, each mounting tube 121 is fixed to the edge of the walkway 12, or to the inner side close to the edge; if each mounting tube 121 is fixed to the edge of the walkway 12, for example, the outer wall of the mounting tube 121 is connected to the edge of the walkway 12, this design can increase the width of the walking channel; if each mounting tube 121 is fixed to the inner side of the walkway 12 close to the edge, since the circumferential direction of the mounting tube 121 is connected to the walkway 12, the connection strength between the mounting tube 121 and the walkway 12 can be improved.

[0051] Optionally, the limiting plate 132 is arranged around the circumferential direction of the support column 131 , and the limiting plate 132 has a continuous annular structure or a discontinuous intermittent structure, as long as the limiting plate 132 can support the guardrail 13 .

[0052] Alternatively, as Figure 1 、 Figure 2 and Figure 6 As shown, the end of each support column 131 is provided with a first threaded hole 101, and the fastening assembly 14 includes a pad 141 and a first bolt 142. The pad 141 is provided at the lower end of the mounting tube 121, and the first bolt 142 passes through the pad 141 and is engaged with the first threaded hole 101. In the present application, the guardrail 13 is fixed to the walkway 12 by engaging the first bolt 142 with the first threaded hole 101. Each support column 131 of the guardrail 13 abuts against the upper end of the mounting tube 121 through the limit plate 132. The first bolt 142 is tightened to abut the pad 141 against the lower end of the mounting tube 121. This fastening method is simple and reliable, and does not cause the guardrail 13 to shake.

[0053] In other embodiments, the guardrail 13 and the walkway 12 can be connected via a hinge structure. For example, the guardrail 13 can be folded to the side of the walkway 12 or unfolded to be perpendicular to the walkway 12 via the hinge structure.

[0054] Optionally, Figure 7 yes Figure 5 Please refer to the cross-sectional structure diagram of the walkway shown in Figure 3 、 Figures 5 to 7 At least two second threaded holes 102 are provided on the side of the walkway 12, and at least two through holes 105 are provided on the guardrail 13; when the walkway 12 is in the first flipping state, the guardrail 13 is arranged on the side of the walkway 12, and each through hole 105 is arranged corresponding to each second threaded hole 102, and the pad 141 is arranged corresponding to the through hole 105, and the first bolt 142 passes through the pad 141 and the through hole 105 and is connected with the second threaded hole 102. In this embodiment, the guardrail 13 includes at least one baffle 133, the two ends of the baffle 133 are fixed to two adjacent support columns 131, and each through hole 105 passes through the baffle 133; when the guardrail 13 is locked to the side of the walkway 12, the first bolt 142 presses the pad 141 against the baffle 133, and the screw section of the first bolt 142 is threadedly connected with the second threaded hole 102.

[0055] Alternatively, as Figure 5 As shown, the side of the walkway 12 is provided with a plurality of reinforcing rib structures 122 for increasing the structural strength of the walkway 12. The plurality of reinforcing rib structures 122 are arranged in a transverse and / or longitudinal direction and are interconnected. The second threaded hole 102 is provided on a reinforcing rib structure 122. In this embodiment, the walkway 12 includes a front side for people to walk on and a back side opposite to the front side. The plurality of reinforcing rib structures 122 are fixed to the back side of the walkway 12, that is, the guardrail 13 is fixed to the back side of the walkway 12.

[0056] In other embodiments, the guardrail 13 is fixed to the front of the walkway 12. For example, the front of the walkway 12 is provided with a recessed receiving groove, the shape of which matches the shape of the guardrail 13. When the walkway 12 is in the first flipping state, the guardrail 13 is arranged in the receiving groove. At this time, the guardrail 13 is located between the walkway 12 and the turntable base 11. The overall thickness of the walkway 12 and the guardrail 13 is compressed to be slightly greater than or equal to the thickness of the walkway 12, which can further reduce the transportation width and meet the strict transportation width limit requirements. In this embodiment, the walkway 12 is recessed on the front to form a receiving groove, and the area corresponding to the receiving groove on the back of the walkway 12 is raised to form a reinforcing rib, which can increase the structural strength of the walkway 12 without the need to set up an additional reinforcing rib structure 122, which is conducive to reducing equipment costs.

[0057] Alternatively, as Figure 6As shown, the guardrail 13 includes two baffles 133, one of which is connected to the trunk sections of the two support columns 131, and the other baffle 133 is arranged close to the limiting plate 132, and the baffle 133 serves as a skirting board.

[0058] Alternatively, as Figure 6 As shown, the guardrail 13 includes at least one crossbeam 134, the ends of which are fixedly connected to the ends of two adjacent support columns 131. The crossbeam 134 and the two support columns 131 form a U-shaped structure. In this embodiment, the guardrail 13 includes two crossbeams 134, one of which is connected to the ends of the two support columns 131, and the other crossbeam 134 is fixed to the trunk sections of the two support columns 131. Each crossbeam 134 is arranged parallel to the baffle 133.

[0059] Optionally, the crossbeam 134 and support column 131 of the guardrail 13 are both hollow tubular structures, which can reduce the weight of the guardrail 13 while ensuring sufficient structural strength of the guardrail 13, making it easier to install and remove. In this embodiment, the cross-section of the crossbeam 134 and / or support column 131 is circular or square.

[0060] In other embodiments, the guardrail 13 includes a first folding portion and a second folding portion, which are connected by a hinge structure. The first folding portion and the second folding portion can be flipped and unfolded around the hinge structure, or folded together to reduce the height of the guardrail 13.

[0061] Optionally, Figure 8 This is a cross-sectional structural diagram of the turntable base, walkway and guardrail of the present application in working state. Figure 9 yes Figure 8 The enlarged schematic diagram of the turntable base, walkway and guardrail is shown. Figure 10 This is a side view of the structure of the walkway of the present application. Figure 4 、 Figure 8 、 Figure 9 and Figure 10As shown, the turntable base 11 is provided with at least two leveling seats 112, each of which is provided with at least one third threaded hole 103 and a second bolt 115 that cooperates with the third threaded hole 103. The edge of the walkway 12 is provided with at least two fourth threaded holes 104 that cooperate with the third bolt 123 that cooperates with the fourth threaded holes 104. When the walkway 12 is in the second flipping state, the heads of the second bolts 115 and the heads of the third bolts 123 abut against each other. Rotating the second bolts 115 and / or the third bolts 123 can adjust the horizontal state of the walkway 12. When the horizontal state of the walkway 12 needs to be adjusted, for example, the second bolts 115 and / or the third bolts 123 are rotated using a wrench to adjust the depth of the second bolt 115 entering the third threaded hole 103 and / or the depth of the third bolt 123 entering the fourth threaded hole 104, thereby adjusting the walkway 12 to a horizontal state. This leveling design can ensure that the walkway 12 is level even with a certain degree of error, meeting the working and walking requirements.

[0062] In another embodiment, at least two leveling seats 112 are provided on the turntable base 11, each of which is provided with at least one third threaded hole 103 and a second bolt 115 that cooperates with the third threaded hole 103. When the walkway 12 is in the second flipped state, the edge of the walkway 12 abuts against the second bolt 115, and rotating the second bolt 115 can adjust the horizontal state of the walkway 12. In this embodiment, no bolt structure is provided on the edge of the walkway 12, and the horizontal state of the walkway 12 is adjusted only by the second bolt 115 of the leveling seat 112. For example, the second bolt 115 is rotated with a wrench to adjust the depth of the second bolt 115 entering the third threaded hole 103, thereby maintaining the level of the walkway 12 abutting therewith.

[0063] Alternatively, as Figure 2 and Figure 9 As shown, each third bolt 123 is connected to a nut 124, and the nut 124 is located between the edge of the walkway 12 and the head of the third bolt 123. In this embodiment, the nut 124 is used to lock the third bolt 123, for example, the third bolt 123 can be locked by rotating the nut 124 until it abuts against the edge of the walkway 12.

[0064] Alternatively, as Figure 1 and Figure 3 As shown, the engineering machinery turntable assembly includes a plurality of decks 12 arranged side by side along the length of the turntable base 11. In this embodiment, the number of guardrails 13 is the same as the number of decks 12, or the number of guardrails 13 is less than the number of decks 12. For example, the guardrails 13 are not installed on the deck 12 near the cab. The number of guardrails 13 can be freely increased or decreased as needed.

[0065] Alternatively, as Figure 1 and Figure 4 As shown, the turntable base 11 is provided with a plurality of leveling seats 112, each of which is provided with at least two third threaded holes 103 and at least two second bolts 115. The plurality of leveling seats 112 are spaced apart from each other along the length direction of the turntable base 11. Two adjacent walkways 12 share one leveling seat 112, and the at least two second bolts 115 of the leveling seat 112 respectively abut against the third bolts 123 of the two adjacent walkways 12. In this embodiment, two adjacent walkways 12 share one leveling seat 112, and the two second bolts 115 on the leveling seat 112 are used to adjust the horizontal state of the two walkways 12 respectively to ensure that the upper surfaces of the two walkways 12 are flush. By screwing in or out the second bolts 115 and / or the third bolts 123, the upper surfaces of the plurality of walkways 12 can be kept flush even with large processing errors.

[0066] Alternatively, as Figure 2 、 Figure 4 and Figure 10 As shown, the turntable base 11 is provided with at least two first connecting members 113, each of which is provided with a first locking hole 106; the edge of the walkway 12 is provided with at least two second connecting members 125, each of which is provided with a second locking hole 107, and each first connecting member 113 and each second connecting member 125 are rotatably connected via a first pin 15; when the walkway 12 is in the first flipping state, the first locking hole 106 and the second locking hole 107 are inserted into the second pin 16 to lock the walkway 12; when the walkway 12 is in the second flipping state, the second pin 16 is inserted into the first locking hole 106. In this embodiment, the walkway 12 can flip around the first pin 15, for example, from the first flipping state to the second flipping state, or from the second flipping state to the first flipping state.

[0067] Optionally, each first connecting member 113 is provided with a first axial hole 108 , each second connecting member 125 is provided with a second axial hole 109 , and the first pin 15 is provided through the first axial hole 108 and the second axial hole 109 .

[0068] Optionally, the first connecting member 113 is plate-shaped, and the edge of the first connecting member 113 is fixed to the turntable base 11 . Preferably, the first connecting member 113 is perpendicular to the turntable side 111 , and the first axial hole 108 and the first locking hole 106 pass through the first connecting member 113 .

[0069] Alternatively, as Figure 1 and Figure 2As shown, the second connecting member 125 includes a first connecting plate 1251 and a second connecting plate 1252 disposed opposite each other, with a plug-in gap formed between the first connecting plate 1251 and the second connecting plate 1252. The edges of the first connecting plate 1251 and the second connecting plate 1252 are fixed to the edge of the walkway 12, and the second axial hole 109 and the second locking hole 107 pass through the first connecting plate 1251 and the second connecting plate 1252. When the first connecting member 113 and the second connecting member 125 are connected via the first pin 15, the first connecting member 113 is disposed in the plug-in gap, and the first pin 15 passes through the second axial hole 109 of the first connecting plate 1251, the first axial hole 108 of the first connecting member 113, and the second axial hole 109 of the second connecting plate 1252 in sequence. When the guardrail 13 is locked to the side of the walkway 12, the second pin 16 sequentially passes through the second locking hole 107 of the first connecting plate 1251, the first locking hole 106 of the first connecting member 113, and the second locking hole 107 of the second connecting plate 1252. In this embodiment, the second connecting member 125 can restrain the first connecting member 113 in the insertion gap, ensuring that the first connecting member 113 is not likely to slip out of the insertion gap.

[0070] In other embodiments, the walkway 12 and the turntable base 11 are connected via a hinge structure, which is not limited to the above.

[0071] Optionally, the second pin shaft 16 is, for example, a cotter pin, but is not limited thereto.

[0072] Alternatively, as Figure 1 and Figure 4 As shown, the turntable side surface 111 is arranged in the vertical direction, and the turntable base 11 includes a connecting wall 114 that is recessed relative to the turntable side surface 111. Each first connecting member 113 is fixedly connected to the connecting wall 114. Due to the recessed design of the connecting wall 114 relative to the turntable side surface 111 of the present application, the first connecting member 113 does not protrude from the turntable side surface 111. After the walkway 12 is removed from the turntable base 11, the first connecting member 113 does not affect the width of the turntable base 11, and does not affect the transportation width limit, thus meeting the strict transportation width limit requirements.

[0073] Alternatively, as Figure 1 and Figure 4 As shown, the connecting wall 114 is inclined relative to the horizontal plane; the connecting wall 114 can be a straight wall or an arc wall, which can be freely selected according to actual needs. In this embodiment, the bottom surface of the turntable base 11 is parallel to the horizontal plane, and the connecting wall 114 is inclined and connected between the turntable side surface 111 and the bottom surface.

[0074] In other embodiments, the connecting wall 114 is parallel to and opposite to the turntable side 111, and a transition inner wall is connected between the connecting wall 114 and the turntable side 111. The transition inner wall is respectively connected to the connecting wall 114 and the turntable side 111 vertically or at a certain angle, and the turntable side 111, the transition inner wall and the connecting wall 114 have a Z-shaped step-like structure.

[0075] Alternatively, as Figure 4 As shown, each leveling seat 112 is fixed to the connecting wall 114 , and each leveling seat 112 is disposed adjacent to the first connecting member 113 .

[0076] Alternatively, as Figure 4 As shown, each first connecting member 113 includes an edge 1131 arranged adjacent to the walkway 12, the edge 1131 is on the same plane as the turntable side 111, or the distance between the edge 1131 and the guardrail 13 is greater than the distance between the turntable side 111 and the guardrail 13, that is, the edge 1131 of each first connecting member 113 does not protrude from the turntable side 111, which is beneficial to narrowing the transportation width limit.

[0077] Optionally, each first connecting member 113 is triangular, for example, a right triangle, one right-angled edge 1131 of each first connecting member 113 is parallel to the turntable side 111 , and the other right-angled edge 1131 of each first connecting member 113 is perpendicular to the turntable side 111 .

[0078] Optionally, the shape of the walkway 12 can be rectangular, trapezoidal or other special structures.

[0079] Optionally, the surface of the walkway 12 may be provided with round holes, rectangular holes, or holes of different shapes.

[0080] Optionally, the surface of the walkway 12 may be provided with an anti-skid plate, such as a fisheye mesh plate or a lentil pattern plate, but the present invention is not limited thereto.

[0081] Optionally, the engineering machinery turntable assembly further includes a cover assembly 17 and a cockpit 18 , and both the cover assembly 17 and the cockpit 18 are fixed on the turntable base 11 .

[0082] Optionally, when the guardrail 13 is fixed to the side of the walkway 12 , the bottom end of the guardrail 13 does not exceed the bottom surface of the turntable base 11 and will not interfere with the components below the turntable base 11 .

[0083] Second embodiment

[0084] Figure 11 This is a structural diagram of the second embodiment of the present application in which the walkway and guardrail are in an unfolded state. Figure 12 This is a structural diagram of the second embodiment of the present application, in which the walkway and guardrail are in a folded state. Figure 13This is a bottom view of the walkway structure of the second embodiment of the present application. Figure 14 yes Figure 13 The cross-sectional structural diagram of the walkway shown in FIG. Figure 15 This is a side structural diagram of the walkway of the second embodiment of the present application. Figure 16 This is a front view structural diagram of the guardrail of the second embodiment of the present application, please refer to Figures 11 to 16 The engineering machinery turntable assembly of this embodiment is substantially the same as that of the first embodiment, except that the local structures of the platform 12 and the guardrail 13 are different.

[0085] Alternatively, see Figures 11 to 16 The side of the walkway 12 is connected to the limiting frame 126, and a limiting groove 201 is formed between the limiting frame 126 and the walkway 12. At least two second threaded holes 102 are provided on the limiting frame 126, and the guardrail 13 is provided with a connector 135, which is located between two adjacent support columns 131; when the walkway 12 is in the first flipping state, the guardrail 13 is arranged on the side of the walkway 12, and the connector 135 is arranged in the limiting groove 201, the pad 141 is arranged corresponding to the second threaded hole 102, the first bolt 142 passes through the pad 141 and is connected in coordination with the second threaded hole 102, and the first bolt 142 cooperates with the limiting frame 126 to lock the guardrail 13.

[0086] When the guardrail 13 needs to be fixed to the side of the walkway 12, first flip the guardrail 13 up and down 180°, that is, turn the guardrail 13 upside down, and then set the guardrail 13 on the side of the walkway 12. Then, move the guardrail 13 along the direction of gravity until the head of the connector 135 is inserted into the limit groove 201, and finally pass the first bolt 142 through the pad 141 and connect it with the second threaded hole 102. At this time, part of the screw segment of the first bolt 142 passes through the second threaded hole 102, and the screw segment of the first bolt 142 cooperates with the limit frame 126 to clamp the head of the connector 135, so that the guardrail 13 is fixed to the side of the walkway 12.

[0087] The guardrail 13 of this embodiment can be inserted into the limiting groove 201 of the walkway 12 through the connector 135. The limiting groove 201 can block the limiting connector 135. At the same time, the screw section of the first bolt 142 can block the connector 135, so that the guardrail 13 can be fixed to the side of the walkway 12, which is convenient for quick assembly and management and can improve the efficiency of assembly and disassembly.

[0088] Alternatively, as Figure 13 and Figure 14As shown, the limiting frame 126 includes a side panel 1261 spaced apart from the walkway 12 and a blocking plate 1262 connected between the side panel 1261 and the walkway 12. The two ends of the side panel 1261 are bent and connected to the walkway 12 at a certain angle. The blocking plate 1262 forms the bottom of the limiting groove 201, and the side panel 1261 and the walkway 12 form the groove wall of the limiting groove 201. When the connector 135 is inserted into the limiting groove 201, the head of the connector 135 abuts against the blocking plate 1262, which can support the connector 135. The side panel 1261 and the part of the walkway 12 can limit the connector 135.

[0089] Alternatively, as Figure 12 and Figure 16 As shown, the connector 135 includes two opposed vertical tubes 1351 and an intermediate tube 1352 connected to the ends of the two vertical tubes 1351. The two vertical tubes 1351 and the intermediate tube 1352 form a U-shaped structure. The two vertical tubes 1351 are fixed to the baffle 133. When the guardrail 13 is locked to the side of the walkway 12, the intermediate tube 1352 is located in the limiting groove 201. One side of the intermediate tube 1352 abuts against the baffle 1262, and the other side of the intermediate tube 1352 abuts against the screw section of the first bolt 142. In other words, the intermediate tube 1352 is clamped between the baffle 1262 and the at least two first bolts 142.

[0090] Optionally, the walkway 12 includes a first flange 127 adjacent to the turntable base 11 and a second flange 128 disposed opposite the first flange 127. Both the first flange 127 and the second flange 128 are provided with a plurality of grooves 202 for accommodating the frame of the guardrail 13. When the guardrail 13 is connected to the side of the walkway 12, the frame of the guardrail 13 is correspondingly disposed in each groove 202. In this embodiment, the provision of the plurality of grooves 202 on the walkway 12 enables the guardrail 13 to be embedded in the side of the walkway 12. The overall thickness of the stacked walkway 12 and guardrail 13 is reduced, making it easier to meet width restriction requirements.

[0091] Optionally, the overall thickness of the stacked walkway 12 and guardrail 13 is 45 mm to 70 mm, for example, 50 mm, 55 mm, 60 mm, or 65 mm.

[0092] Third embodiment

[0093] The present application also relates to an engineering machine including the above-mentioned engineering machine turntable assembly. In this embodiment, the engineering machine is, for example, a pile frame device, a crawler crane device, a double-wheel milling device, or a rotary drilling rig device, but is not limited thereto.

[0094] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed in this application shall be covered by the claims of this application.

Claims

1. A turntable assembly for engineering machinery, characterized in that: It includes a turntable base, at least one walkway board and at least one guardrail, the walkway board is flippably connected to the turntable base, the walkway board includes a first flipping state and a second flipping state, the walkway board in the first flipping state is locked to the turntable side of the turntable base, and the walkway board in the second flipping state is for people to walk on, when the walkway board is in the first flipping state, the guardrail is connected to the side of the walkway board, when the walkway board is in the second flipping state, the guardrail is connected to the walkway board, and a walking passage is formed between the guardrail, the walkway board and the turntable base.

2. The engineering machinery turntable assembly according to claim 1, characterized in that: When the walkway is in the first flipping state, the guardrail is connected to the side of the walkway using the fastening assembly; when the walkway is in the second flipping state, the guardrail is connected to the walkway using the fastening assembly.

3. The engineering machinery turntable assembly according to claim 2, characterized in that: At least two mounting tubes are fixed to one side of the walkway away from the turntable base, the guardrail includes at least two support columns, and a limit plate is fixed to the outer wall of each support column. When the walkway is in the second flipping state, the end of each support column is installed in the mounting tube, the limit plate abuts against the upper end of the mounting tube, and the fastening assembly is connected to the end of the support column; and / or, A first threaded hole is provided at the end of each support column, and the fastening assembly includes a pad and a first bolt. The pad is provided at the lower end of the mounting tube, and the first bolt passes through the pad and is connected in cooperation with the first threaded hole.

4. The engineering machinery turntable assembly according to claim 3, characterized in that: At least two second threaded holes are provided on the side of the walkway, and at least two through holes are provided on the guardrail; when the walkway is in the first flipping state, the guardrail is arranged on the side of the walkway, and each through hole is arranged corresponding to each second threaded hole, the pad is arranged corresponding to the through hole, and the first bolt passes through the pad and the through hole and is connected with the second threaded hole.

5. The engineering machinery turntable assembly according to claim 3, characterized in that: The side of the walkway is connected to a limiting frame, a limiting groove is formed between the limiting frame and the walkway, at least two second threaded holes are provided on the limiting frame, the guardrail is provided with a connector, and the connector is located between two adjacent support columns; when the walkway is in the first flipping state, the guardrail is arranged on the side of the walkway, the connector is arranged in the limiting groove, the pad is arranged corresponding to the second threaded hole, the first bolt passes through the pad and is connected in cooperation with the second threaded hole, and the first bolt cooperates with the limiting frame to lock the guardrail.

6. The engineering machinery turntable assembly according to claim 4 or 5, characterized in that: The walkway includes a first flange adjacent to the turntable base and a second flange arranged opposite to the first flange, and the first flange and the second flange are both provided with multiple grooves for accommodating the guardrail frame; when the guardrail is connected to the side of the walkway, the guardrail frame is correspondingly arranged in each of the grooves.

7. The engineering machinery turntable assembly according to any one of claims 1 to 5, characterized in that: Include at least one of the following: The turntable base is provided with at least two leveling seats, each of which is provided with at least one third threaded hole and a second bolt engaged with the third threaded hole; when the walkway is in the second flipping state, the edge of the walkway abuts against the second bolt, and the second bolt is rotated to adjust the horizontal state of the walkway; The turntable base is provided with at least two leveling seats, each of the leveling seats is provided with at least one third threaded hole and a second bolt cooperated with the third threaded hole, and the edge of the walkway is provided with at least two fourth threaded holes and the third bolt cooperated with the fourth threaded holes; when the walkway is in the second flipping state, the head of the second bolt and the head of the third bolt abut against each other, and the horizontal state of the walkway can be adjusted by rotating the second bolt and / or the third bolt; Each of the third bolts is connected with a nut, and the nut is located between the edge of the walkway and the head of the third bolt.

8. The engineering machinery turntable assembly according to claim 7, characterized in that: The engineering machinery turntable assembly includes a plurality of the walkways, and the plurality of the walkways are arranged side by side along the length direction of the turntable base; and / or, There are multiple leveling seats on the turntable base, each of which is provided with at least two third threaded holes and at least two second bolts. The multiple leveling seats are arranged at intervals along the length direction of the turntable base, and two adjacent walkways share one leveling seat. At least two of the second bolts of the leveling seat are respectively abutted against the third bolts of two adjacent walkways.

9. The engineering machinery turntable assembly according to any one of claims 1 to 5, characterized in that: Include at least one of the following: The turntable base is provided with at least two first connecting members, each of which is provided with a first locking hole; the edge of the walkway is provided with at least two second connecting members, each of which is provided with a second locking hole, and each of the first connecting members is rotatably connected to each of the second connecting members through a first pin shaft; when the walkway is in the first flipping state, the first locking hole and the second locking hole are installed with a second pin shaft to lock the walkway; when the walkway is in the second flipping state, the second pin shaft is installed in the first locking hole; The side surface of the turntable is arranged in a vertical direction, the turntable base includes a connecting wall that is retracted relative to the side surface of the turntable, and each of the first connecting members is fixedly connected to the connecting wall; Each of the first connecting members includes an edge arranged adjacent to the walkway, the edge is coplanar with the side surface of the turntable, or the distance between the edge and the guardrail is greater than the distance between the side surface of the turntable and the guardrail.

10. An engineering machine, characterized in that: The engineering machinery turntable assembly comprises the one described in any one of claims 1 to 9.

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