CN212601703U - Foldable arm joint sleeving platform - Google Patents

Abstract

The utility model relates to the technical field of crane boom transition transportation, and discloses a foldable boom section sleeving platform, which comprises main chords, transverse rods, a first roller support, a first platform and a second platform, wherein the first platform and the second platform are used for supporting boom sections and are connected end to end; at least two first cushion blocks are arranged on two main chords of the first platform and used for supporting a first section arm section; at least two roller wheel supports are arranged on the two main chords of the second platform, and each roller wheel support comprises a first roller wheel support and a second roller wheel support transversely expanded from the first roller wheel support. The beneficial effects of the utility model are that can directly the suit after putting into the arm festival, need not adjust the position and the transform hoist and mount position of quilt cover income arm festival, it is high-efficient convenient.

Description

Foldable arm joint sleeving platform

Technical Field

The utility model relates to a hoist cantilever crane transportation technical field that changes a journey specifically is a foldable arm festival suit platform.

Background

The crawler crane generally comprises a plurality of main arms, tower arms and auxiliary arm sections, and has different sections; the number of transport vehicles required for transporting one 12m long arm section (or 26 m long arm sections) independently is large, and transport vehicles can be reduced and transport cost can be reduced by transporting different sections after sleeving.

The invention patent (patent name: an adjustable truss arm transportation sleeving device, publication number: CN107381381A, patent number: ZL 201710779734.8) discloses a sleeving device for transporting an arm support, as shown in figures 1 and 2, arm sections can be sleeved directly after being put in, the position of the sleeved arm sections does not need to be adjusted, and the lifting position does not need to be changed, but the invention also has the following defects:

1. in the sleeving process, when the tower arm (middle-section arm section) is sleeved into the main arm (large-section arm section), the second carrier roller in the sleeving device needs to be taken out integrally, and when the auxiliary arm (small-section arm section) is guided into the tower arm (middle-section arm section), the second carrier roller in the sleeving device needs to be installed back, so that time and labor are wasted.

2. In the sleeving process, when the tower arm (middle-section arm joint) is guided into the main arm (large-section arm joint), and when the auxiliary arm (small-section arm joint) is guided into the tower arm (middle-section arm joint), an auxiliary crane or other equipment is needed to be used as an auxiliary power source to pull the wire rope head, and the tower arm is pulled into the main arm.

3. Although the sleeving device can be transversely and longitudinally contracted when not used so as to reduce the occupied site, when the sleeving device is used, the contraction parts of the sleeving device need to be unfolded and adjusted to be in an adjustable state one by one, long adjustment time is needed, and the sleeving preparation time is long; in addition, the sleeving device still needs to occupy a larger field after being contracted.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a folding arm joint sleeving platform.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a foldable arm festival suit platform, includes main chord member, horizontal pole, first gyro wheel support, its characterized in that: the first platform and the second platform are used for supporting arm sections and are connected end to end, the first platform and the second platform respectively comprise an upper main chord and a lower main chord which are longitudinally arranged and at least two transverse rods, the two ends of each transverse rod are respectively connected with the upper main chord and the lower main chord and are transversely arranged, and the transverse rods on the first platform are longer than the transverse rods on the second platform; at least two first cushion blocks are arranged on two main chords of the first platform and used for supporting a first section arm section; at least two roller supports are arranged on two main chords of the second platform, each roller support comprises a first roller support and a second roller support transversely extending from the first roller support, each first roller support is used for supporting a second section arm section, each first roller support comprises a first support body arranged on the main chords and a first roller arranged on the first support body, and each second section arm section is placed on the corresponding first roller; the second roller support is used for supporting a third section arm section and comprises a second support body arranged on the cross rod, a second roller support body movably connected with the second support body and a second roller arranged on the second roller support body, and the third section arm section is arranged on the second roller.

The first section arm section is a large section arm section, the second section arm section is a middle section arm section, and the third section arm section is a small section arm section, which are respectively equivalent to a main arm, a tower arm and an auxiliary arm in the prior art.

Furthermore, at least two pairs of first cushion blocks are symmetrically arranged on the two main chords of the first platform, at least two pairs of roller supports are symmetrically arranged on the two main chords of the second platform, and the heights of each pair of first cushion blocks and each pair of roller supports are sequentially increased from the head end of the first platform to the tail end of the second platform in a gradient distribution mode.

The height of the roller wheel support is arranged according to a preset inclination angle, namely the first roller wheel and the second roller wheel are arranged according to the preset inclination angle, so that most of resistance in the process of impacting the sleeve arm can be resisted by utilizing the component force of gravity along the sleeve arm direction, and the aim of saving labor is fulfilled.

The swing joint of second stake body and second gyro wheel stake body can realize the two-in-one assembly form of operating condition and the unoperated state of second gyro wheel support, for example link together second stake body and second gyro wheel stake body through the round pin axle, through the conversion of realizing two kinds of states around the round pin axle, specifically as follows:

when the arm sections need to be sleeved in two layers, the second roller support is switched to be in a non-working state, namely the pin shaft is rotated, the second roller rotates downwards along with the second roller support body until the second roller is positioned at the lowest position, then the first section arm section is arranged on the first platform, and the second section arm section is arranged on the second platform; at the moment, because the second section arm section has a preset inclination angle with the ground, a plurality of people push the second section arm section along the sleeve arm direction to guide the second section arm section into the first section arm section, and the second section arm section is sleeved by the first section arm section through the arm section-carrying roller until the second section arm section is completely sleeved.

When the arm sections need to be sleeved in three layers, the arm sections with the second cross sections are sleeved firstly, the second roller support is switched to be in a working state, namely the pin shaft is rotated, the second roller rotates upwards along with the second roller support body until the second roller is at the highest position, and then the arm sections with the third cross sections are arranged on the second platform; at the moment, because the third section arm section has a preset inclination angle with the ground, a plurality of people push the third section arm section along the sleeve arm direction to guide the third section arm section into the second section arm section, the third section arm section passes through the second section arm section and is provided with arm section rollers until the third section arm section is completely sleeved in the sleeve arm, the sleeved arm section is integrally lifted and placed into a transport vehicle during transportation, and the dismounting process is opposite.

Further, first platform and second platform all are the truss-like support, the truss-like support is provided with at least a web member for in the unit space that main chord member and horizontal pole enclose, and the web member generally sets up for the slope, and both ends set up respectively on main chord member and horizontal pole, nevertheless when evenly needing for the distribution of gyro wheel support, can be in the inside one section web member that transversely extends of autonomic chord member, and the second stake body can set up on such one section web member that transversely extends like this.

Furthermore, the first platform is provided with at least one section of truss type support, the second platform is provided with at least one section of truss type support, and every two sections of truss type supports are connected in a rotating mode, so that the first platform can be folded at least once, the occupied area of the suit is greatly reduced, and the time spent on unfolding and folding is very little.

Further, still be provided with two at least support frames on two main chords of second platform, the support frame is used for placing the main chord of first platform, the support frame be one with the main chord shape assorted of first platform, the block of upper portion indent.

Furthermore, the support frame is provided with a second gasket which is attached to the support frame in shape; preferably, the second gasket is fixed on the support frame through a bolt, and the second gasket is made of flexible materials, so that flexible contact between the first platform and the second platform is guaranteed; the support frame is used for supporting first platform, and a plurality of arm festival suit are accomplished the back, will the utility model discloses a suit platform is folding, with first platform around the round pin axle rotatory, put into the support frame on the second platform can, the expansion process is opposite, and is swift convenient.

Furthermore, the first cushion block and the roller wheel bracket are connected by a pin shaft or a thread and can be assembled separately; the maintenance of cushion, gyro wheel support of being convenient for like this, when bad, as long as pull down the maintenance can, need not keep in repair whole suit platform transport to the fixed point.

Furthermore, a first gasket is fixedly arranged on the first cushion block.

Preferably, at least two first cushion blocks are symmetrically arranged on the two main chords of the first platform.

Preferably, the first gasket is fixed on the first cushion block through screws, and the first gasket is made of flexible materials so as to ensure flexible contact between the first platform and the arm section and prevent the arm section from being damaged.

Furthermore, the main chord members, the cross rods and the web members are all made of any one of seamless steel pipes, rectangular pipes, angle steels and plates by tailor welding or assembling; the assembly mode of the connecting points among the main chord members, the cross rods and the web members is a pin shaft or a bolt or an oil cylinder.

Furthermore, the rotation connection mode between every two truss type supports is a shaft pin connection mode.

Further, the roller bracket also comprises a third roller bracket transversely expanded from the second roller bracket, and the structure of the third roller bracket is the same as that of the second roller bracket.

Of course, the fourth roller support and the fifth roller support … … can be expanded transversely on the basis of the third roller support, and the arm joints with more layers can be sleeved by increasing the number of the transverse roller supports, so that the sleeving methods are consistent.

Compared with the prior art, the utility model provides a foldable arm festival suit platform possesses following beneficial effect:

(1) the sleeving platform of the utility model can directly sleeve the arm sections after putting the arm sections in, does not need to adjust the positions of the sleeved arm sections and change the hoisting positions, is efficient and convenient, and can effectively prevent the arm frame from colliding and damaging;

(2) the rollers in the sleeving platform are arranged according to a preset inclination angle, and the component force of gravity along the direction of the sleeve arm is utilized to offset most of resistance in the sleeve arm process, so that the purpose of saving labor is realized;

(3) the utility model discloses a suit platform is collapsible, can expand fast during the use, and not the time spent can be folded fast, and it is little to occupy the place.

Drawings

FIG. 1 is a schematic view of a prior art packaging device of the invention application CN107381381A, wherein A is a main chord and B is a cross bar;

FIG. 2 is a schematic diagram of a tower arm kit according to prior art invention application CN107381381A, wherein C is a main arm and D is a tower arm;

fig. 3 is a schematic perspective view of the present invention;

FIG. 4 is an enlarged view of detail I of FIG. 3;

FIG. 5 is an enlarged view of a portion II in FIG. 3 and a schematic diagram of the present invention showing three nested layers;

FIG. 6 is an enlarged view of portion III of FIG. 3;

FIG. 7 is an enlarged view of a portion IV of FIG. 3;

FIG. 8 is a schematic view of the assembly structure of the second roller bracket 32 shown in FIG. 5;

FIG. 9 is a schematic view of the second roller 322 shown in FIG. 5 in an operating state;

FIG. 10 is a schematic view of the second roller 322 shown in FIG. 5 in a non-operating state;

FIG. 11 is a schematic front view of the structure of FIG. 3;

FIG. 12 is a schematic bottom view (with a predetermined tilt angle) of the structure of FIG. 3;

FIG. 13 is a schematic view of the two-layer arm joint of the present invention;

FIG. 14 is a schematic view of the three-layer arm joint of the present invention;

FIG. 15 is a schematic view of the completion of the three-layer arm joint assembly of the present invention;

fig. 16 is a schematic view of the present invention in a state of being unfinished in folding;

fig. 17 is a schematic view of the folding completion state of the present invention;

FIG. 18 is a schematic view of the present invention showing four layers;

fig. 19 is an enlarged view of a portion i in fig. 3 when the tilt angle of the present invention is adjustable;

fig. 20 is an enlarged view of a portion ii in fig. 3 when the tilt angle of the present invention is adjustable;

FIG. 21 is a fragmentary diagrammatic view of the spacer of FIG. 19 as an assembled fragmentary view;

FIG. 22 is a fragmentary, diagrammatic view of the first roller bracket of FIG. 20 as an assembled subassembly;

FIG. 23 is a fragmentary, diagrammatic view of the second roller bracket of FIG. 20 as an assembled separate body;

FIG. 24 is a schematic structural view of the main body frame of FIG. 3;

FIG. 25 is a schematic view of the pin joint 13 of FIG. 24;

FIG. 26 is a schematic view of the cross-over joint 13 of FIG. 24 in a bolt assembly manner;

FIG. 27 is a schematic view of the joint 13 of FIG. 24 illustrating the structure of the cylinder assembly;

FIG. 28 is an enlarged view of detail I of FIG. 13;

FIG. 29 is an enlarged view of portion II of FIG. 13 (with the second roller in a non-operative condition);

FIG. 30 is an enlarged view of detail I of FIG. 14;

fig. 31 is an enlarged view of a portion ii of fig. 14 (in which the second roller is in an operating state).

The reference numerals in the figures have the meaning: 1. a first platform; 11. a main chord; 12. a cross bar; 13. a web member; 14. a junction point; 2. a second platform; 3. a roller bracket; 31. a first roller bracket; 32. a second roller bracket; 33. a third roller bracket; 311. a first stent body; 312. a first roller; 321. a second roller bracket body; 322. a second roller; 323. a second stent body; 4. a first cushion block; 41. a first gasket; 5. a support frame; 51. a second gasket; 6. a pin shaft; 7. an arm section roller; 101. a first cross-sectional arm segment; 102. a second cross-sectional arm segment; 103. a third cross-sectional arm segment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 3, 4, 5, and 8, the present invention discloses a set platform, which comprises a main chord 11, a cross bar 12, a first roller support 31, and further comprises a first platform 1 and a second platform 2 for supporting arm joints and connecting end to end, wherein the first platform 1 and the second platform 2 both comprise an upper and a lower main chord 11 longitudinally arranged and at least two cross bars 12 with two ends respectively connected with the upper and the lower main chords 11 and transversely arranged, and the cross bar 12 on the first platform 1 is longer than the cross bar 12 on the second platform 2; at least two first cushion blocks 4 are arranged on two main chords 11 of the first platform 1, and the first cushion blocks 4 are used for supporting a first section arm section 101; at least two roller supports 3 are arranged on two main chords 11 of the second platform 2, each roller support 3 comprises a first roller support 31 and a second roller support 32 transversely extending from the first roller support 31, each first roller support 31 is used for supporting a second section arm section 102 and comprises a first support body 311 arranged on the main chords 11 and a first roller 312 arranged on the first support body 311, and each second section arm section 102 is placed on the first roller 312; the second roller support 32 is used for supporting the third section arm section 103, and includes a second support body 323 arranged on the cross bar 12, a second roller support body 321 movably connected with the second support body 323, and a second roller 322 installed on the second roller support body 321, and the third section arm section 103 is placed on the second roller 322.

The first cross-section arm section 101 is a large cross-section arm section, the second cross-section arm section 102 is a medium cross-section arm section, and the third cross-section arm section 103 is a small cross-section arm section, which are respectively equivalent to a main arm, a tower arm and an auxiliary arm in the prior art.

In an embodiment of the present embodiment, the first platform 1 and the second platform 2 are truss-type supports, the truss-type supports are provided with at least one web member 13 in a unit space enclosed by the main chord 11 and the cross bar 12, the web member 13 is generally disposed in an inclined manner, and two ends of the web member are respectively disposed on the main chord 11 and the cross bar 12, but when necessary for uniform distribution of the roller supports 3, a section of the web member 13 may extend transversely inward from the main chord 11, so that the second support body 323 may be disposed on such a section of the web member 13 extending transversely.

In a specific embodiment of this embodiment, the first platform 1 is configured as at least one truss type support, the second platform 2 is configured as at least one truss type support, and two truss type supports are rotatably connected with each other, as shown in fig. 7, so that the first platform can be folded at least once, the occupied area of the suit is greatly reduced, and the time taken for unfolding and folding is very little.

In a specific embodiment of this embodiment, at least two support frames 5 are further disposed on two main chords 11 of the second platform 2, the support frames 5 are used for placing the main chords 11 of the first platform 1, and the support frame 5 is a block body with a concave upper portion and a shape matching with the shape of the main chords 11 of the first platform 1, as shown in fig. 6.

In a specific embodiment of the present embodiment, the supporting frame 5 has a second pad 51 shaped to fit therewith; preferably, the second gasket 51 is fixed on the support frame 5 by bolts, and the second gasket 51 is made of flexible material to ensure flexible contact between the first platform 1 and the second platform 2; support frame 5 is used for supporting first platform 1, and a plurality of arm festival suit are accomplished the back, will the utility model discloses a suit platform is folding, with first platform 1 around round pin axle 6 rotatory, put into the support frame 5 on the second platform 2 can, the expansion process is opposite, and is swift convenient, as shown in fig. 16 and 17.

In a specific implementation manner of this embodiment, the first cushion block 4 and the roller bracket 3 are separate bodies that can be assembled and connected through a pin shaft or a thread; the maintenance of first cushion 4, gyro wheel support 3 of being convenient for like this, when bad, as long as pull down the maintenance can, need not transport whole suit platform to the fixed point and maintain, as shown in fig. 21-23.

In a specific embodiment of this embodiment, a first pad 41 is fixedly disposed on the first pad 4, as shown in fig. 4.

In a specific embodiment of the present embodiment, at least two first head blocks 4 are symmetrically arranged on two main chords 11 of the first platform 1.

In a specific embodiment of this embodiment, the first spacer 41 is fixed on the first spacer 4 by screws, and the first spacer 41 is made of a flexible material to ensure flexible contact between the first platform 1 and the arm joint and prevent damage to the arm joint.

In an embodiment of the present embodiment, the main chord 11, the cross bar 12 and the web members 13 are all made of one of seamless steel pipes, rectangular pipes, angle steels and plates by welding or assembling, as shown in fig. 24; the joints 14 between the main chords 11, the cross bars 12 and the web members 13 are assembled by means of pins or bolts or cylinders, as shown in fig. 25, 26 and 27, respectively.

In a specific embodiment of this embodiment, the rotational connection between two truss-like supports is a pin connection.

In a specific embodiment of this embodiment, the roller bracket 3 further includes a third roller bracket 33 laterally extending from the second roller bracket 32, and the third roller bracket 33 has the same structure as the second roller bracket 32, as shown in fig. 18.

Of course, the fourth roller bracket and the fifth roller bracket … … can also be transversely expanded on the basis of the third roller bracket 33, and the sleeving of more layers of arm sections can be realized by increasing the number of the transverse roller brackets, and the sleeving methods are consistent.

Example 2

In order to realize the utility model discloses laborsaving purpose does not need the supplementary suit just can be accomplished to crane or other equipment, and the difference of this embodiment and embodiment 1 lies in:

as shown in fig. 11 and 12, at least two pairs of first cushion blocks 4 are symmetrically disposed on two main chords 11 of the first platform 1, at least two pairs of roller brackets 3 are symmetrically disposed on two main chords 11 of the second platform 2, and the heights of each pair of first cushion blocks 4 and each pair of roller brackets 3 are sequentially increased from the head end of the first platform 1 to the tail end of the second platform 2 and are distributed in a gradient manner.

The height of the roller bracket 3 is arranged according to the preset inclination angle, that is, the first roller 312 and the second roller 322 are arranged according to the preset inclination angle, so that most of resistance in the process of impacting the sleeve arm can be resisted by utilizing the component force of gravity along the sleeve arm direction, and the aim of saving labor is fulfilled.

The movable connection between the second frame body 323 and the second roller frame body 321 can realize the assembly of the second roller frame 32 in both the working state and the non-working state, as shown in fig. 9 and 10, for example, the second frame body 323 and the second roller frame body 321 are connected together by the pin 6, and the two states are converted by winding the pin 6, specifically as follows:

as shown in fig. 13, 28 and 29, when the arm section needs to be sleeved in two layers, the second roller bracket 321 is switched to a non-working state, that is, the pin 6 is rotated, the second roller 322 rotates downwards along with the second roller bracket body 321 until the second roller 322 is at the lowest position, then the first section arm section 101 is placed on the first platform 1, and the second section arm section 102 is placed on the second platform 2; at this time, because the second section arm section 102 has a preset inclination angle with the ground, a plurality of people can guide the second section arm section 102 into the first section arm section 101 by pushing the second section arm section 102 along the arm sleeving direction, and the second section arm section is sleeved into the first section arm section 101 through the arm section roller 7 of the first section arm section 101.

As shown in fig. 14, 30 and 31, when the arm sections need to be sleeved in three layers, the sleeving of the second section arm section 102 is completed first, the second roller support 321 is switched to the working state, i.e., the pin 6 is rotated, the second roller 322 rotates upwards along with the second roller support 321 until the second roller 322 is at the highest position, and then the third section arm section 103 is placed on the second platform 2; at this time, because the third section arm section 103 has a preset inclination angle with the ground, a plurality of people can push the third section arm section 103 along the sleeve arm direction to guide the third section arm section into the second section arm section 102, the third section arm section is provided with the arm section roller 7 through the second section arm section 102 until the third section arm section is completely sleeved, the three sleeve arm sections are completely sleeved, as shown in fig. 15, the sleeved arm sections are integrally lifted and placed into a transport vehicle during transportation, and the disassembling process is opposite.

In a specific embodiment of this embodiment, the connecting portion of the first pad 4 and the first platform 1 and the connecting portion of the second platform 2 are all provided with a height-adjustable connecting manner, such as a sleeve connecting manner, a threaded connecting manner, or an oil cylinder connecting manner, preferably a sleeve connecting manner, the sleeve is provided with N holes, and the heights of the first pad 4, the first roller bracket 31, and the second roller bracket 32 are adjusted by fixing the pin and the clip, so as to adjust the tilt angle of the deck-mounted platform, as shown in fig. 19 and 20, of the first pad 4, the first roller bracket 31, and the second roller bracket 32.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a foldable arm festival suit platform, includes main chord member, horizontal pole, first gyro wheel support, its characterized in that: the first platform and the second platform are used for supporting arm sections and are connected end to end, the first platform and the second platform respectively comprise two main chords which are parallel and longitudinally arranged and at least two cross rods which are parallel and transversely arranged, and two ends of each cross rod are respectively connected with the two parallel main chords; at least two first cushion blocks are arranged on two main chords of the first platform and used for supporting a first section arm section; at least two roller supports are arranged on two main chords of the second platform, each roller support comprises a first roller support and a second roller support transversely extending from the first roller support, each first roller support is used for supporting a second section arm section, each first roller support comprises a first support body arranged on the main chords and a first roller arranged on the first support body, and each second section arm section is placed on the corresponding first roller; the second roller support is used for supporting a third section arm section and comprises a second support body arranged on the cross rod, a second roller support body movably connected with the second support body and a second roller arranged on the second roller support body, and the third section arm section is arranged on the second roller.

2. The folding arm segment nesting platform of claim 1, wherein: at least two pairs of first cushion blocks are symmetrically arranged on the two main chords of the first platform, at least two pairs of roller supports are symmetrically arranged on the two main chords of the second platform, and the heights of each pair of first cushion blocks and each pair of roller supports are sequentially increased from the head end of the first platform to the tail end of the second platform and are distributed in a gradient manner.

3. A folding arm node nesting platform according to claim 1 or 2, wherein: the first platform and the second platform are all truss type supports, the truss type supports are provided with at least one web member in a unit space defined by the main chord members and the cross rods, and the second support body can also be arranged on the web members extending inwards and transversely from the main chord members.

4. The folding arm segment nesting platform of claim 3, wherein: the first platform is arranged into at least one section of truss type support, the second platform is arranged into at least one section of truss type support, and every two sections of truss type supports are connected in a rotating mode.

5. The folding arm segment nesting platform of claim 4, wherein: still be provided with two at least support frames on two main chords of second platform, the support frame is used for placing the main chord of first platform, the support frame be one with the main chord shape assorted of first platform, the block of upper portion indent.

6. The folding arm segment nesting platform of claim 5, wherein: the support frame is provided with a second gasket which is attached to the support frame in shape.

7. The folding arm segment nesting platform of claim 1, wherein: the first cushion block and the roller wheel bracket are connected by a pin shaft or a thread and can be assembled separately; and a first gasket is fixedly arranged on the first cushion block.

8. The folding arm segment nesting platform of claim 3, wherein: the main chord members, the cross rods and the web members are all made of any one of seamless steel pipes, rectangular pipes, angle steels and plates by tailor welding or assembling; the assembly mode of the connecting points among the main chord members, the cross rods and the web members is a pin shaft or a bolt or an oil cylinder.

9. The folding arm segment nesting platform of claim 4, wherein: the rotary connection mode between every two truss type supports is a shaft pin connection mode.

10. The folding arm segment nesting platform of claim 1, wherein: the roller bracket further comprises a third roller bracket transversely expanded from the second roller bracket, and the third roller bracket is identical in structure to the second roller bracket.

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