CN114059783A - Truss translation device and truss installation method - Google Patents

Abstract

The invention discloses a truss translation device and a truss installation method, wherein the truss translation device comprises a truss main body and support frame bodies vertically connected to two ends of the truss main body, each support frame body comprises a support bottom beam, a first support column, a second support column and a walking roller wheel, two ends of each support bottom beam are respectively and fixedly connected with the lower end of the first support column and the lower end of the second support column, the upper end of the first support column and the upper end of the second support column are connected in an inverted V shape, the bottom of each support bottom beam is provided with the walking roller wheel, one or more hoisting points are arranged on the lower side of the truss main body, and each hoisting point is provided with an electric hoist. The truss structure can be quickly assembled and translated to the installation position in a place with smaller lifting capacity and a narrow construction area, and the difficulty in positioning and installing the truss structure is reduced.

Description

Truss translation device and truss installation method

Technical Field

The invention relates to the technical field of steel truss construction equipment, in particular to a truss translation device and a truss installation method.

Background

With the rapid and steady increase of national economic construction, the number of large-span space structure buildings is continuously increased, the types and forms of the large-span space structures are quite rich, because the steel yield in China is greatly improved and new materials are continuously developed and utilized, more and more buildings adopt steel truss structures, for example, the steel truss structures are commonly used in public buildings such as large-span factory buildings, exhibition halls, gymnasiums and bridges, and therefore the steel truss structures have wide market prospects and high additional values. However, during the construction of the steel bar truss, basically, after the concrete main structure is constructed, the steel truss structure prefabricated in a factory is transported to a construction site for assembly, and each steel truss structure usually has a large span which can be more than 20 meters and 40 meters, but because of the many welding points of the steel truss structure and the structural defects of the truss, the steel truss has a large rigidity in the plane but a small rigidity out of the plane, and the longer the plane truss is, the larger the deflection is, the larger the uneven deformation of the member generated in the hoisting process is, the more difficult the construction is, the lower the operation efficiency is, the lower the reliability is, and the operation efficiency is low. For this purpose. The steel truss horizontal moving device has important practical significance for researching how to quickly, efficiently and safely finish the installation task of a main truss and a secondary beam by adopting the steel truss horizontal moving device under the existing narrow hoisting space environment condition.

Disclosure of Invention

The invention aims to provide a truss translation device and a truss installation method, which can be used for quickly assembling and translating a steel main truss and a secondary girder truss to installation positions in a place with smaller lifting capacity and a narrow construction area, and carrying out quick, efficient and safe in-place installation, can be accurately moved to a specified installation position, are stable, reliable, good in flexibility and high in safety, and reduce the difficulty in-place installation of a truss structure. In order to achieve the above object, the present invention adopts the following technical effects:

according to one aspect of the invention, the truss translation device comprises a truss main body and support frame bodies vertically connected to two ends of the truss main body, each support frame body comprises a support bottom beam, a first support column, a second support column and a walking roller wheel, the two ends of each support bottom beam are respectively and fixedly connected with the lower end of the first support column and the lower end of the second support column through the support columns, the upper ends of the first support column and the second support column are connected in an inverted V shape, the bottom of each support bottom beam is provided with the walking roller wheel, one or more hoisting points are arranged on the lower side of the truss main body, and each hoisting point is provided with an electric hoist.

Above-mentioned scheme is further preferred, be provided with below the upper end junction of the upper end of first support column and second support column with support the parallel location supporting beam of floorbar, be close location supporting beam's both ends are connected respectively on the inside wall between first support column and second support column, make location supporting beam to form between the upper end of first support column and the upper end junction of second support column and place the space, the upside of truss main part is established on the surface of the upper end of first support column and the upper end junction of second support column, the downside of truss main part is established location supporting beam is last.

Above-mentioned scheme is further preferred, is provided with the brace table between the top of placing the space and the upper end of first support column and the upper end junction of second support column, the both sides of this brace table with be connected between the upper end inboard of first support column and the upper end inboard of second support column, make the surface of brace table with the upper end inboard of first support column, the upper end inboard of second support column form the standing groove.

The above scheme is further preferred, a third support column is vertically arranged between the middle part of the positioning support beam and the support bottom beam, pull rods which are horizontally or obliquely connected are arranged between the third support column and the first support column and between the third support column and the second support column, two ends of the positioning support beam respectively extend outwards along two ends of the first support column and the second support column, and the extending length of the positioning support beam is 20cm-40 cm.

The above scheme is further preferred, the truss main part is formed by two sections or multisection mutual detachable truss connection, and every section truss includes chord member, lower chord member and support arm between chord member and the lower chord member and set up the truss support section by head end to tail end direction interval distribution in proper order, and the upper and lower both ends of this truss support section are connected respectively on chord member and lower chord member, the both ends of chord member correspond respectively to set up on the upper end of first support column and the upper end junction of second support column on the surface, the both ends of lower chord member correspond respectively and set up on location support beam.

The scheme is further preferred, two symmetrical upper angle steel supporting arms and lower angle steel supporting arms are transversely arranged on the upper side and the lower side of the outer wall of the upper chord and the upper side and the lower side of the outer wall of the lower chord at intervals of 2m-3.5m, the end parts of the upper angle steel supporting arms and the end parts of the lower angle steel supporting arms are connected through rectangular pipe hoops, and first connecting rods are respectively connected between the lower angle steel supporting arms and truss supporting sections arranged on the two sides of the upper chord and between the upper angle steel supporting arms and truss supporting sections arranged on the two sides of the lower chord.

In a further preferable mode of the above scheme, the upper angle steel supporting arm and the lower angle steel supporting arm are angle steels with the length of 0.9m and the length of L80 multiplied by 6, and the rectangular pipe hoop is a rectangular hoop with the length of 250mm and the length of RHS200 multiplied by 14.

According to the scheme, the walking support is further preferably arranged between the upper angle steel support arms and the lower angle steel support arms (14) which are adjacent to each other on the two sides of the upper chord and between the upper angle steel support arms and the lower angle steel support arms (14) which are adjacent to each other on the two sides of the lower chord in a fixed mode respectively, the walking support is connected with the rectangular pipe hoop, and the second connecting rod is connected between the walking support and the close truss support sections.

According to the scheme, the baffle plates are arranged on two sides of the rolling walking of the walking roller, and the movable draw hooks are arranged at two ends of the supporting bottom beam respectively.

According to another aspect of the present invention, a truss installation method using a truss translation device of the present invention includes the steps of:

the method comprises the following steps: analyzing and calculating the stress condition of the truss main body, acquiring specification parameters of the truss main body to enable the truss main body to meet the strength requirement, laying two parallel guide rails for walking rollers on a building roof, and symmetrically arranging a support frame body between the two parallel walking rollers; hoisting each section of truss to a support frame body respectively, and connecting each section of truss to form a truss main body;

step two: fixing an upper chord of the truss main body on a support table between the upper end of the first support column and the upper end of the second support column, connecting the upper chord of the truss main body in a placing groove of the support table, and connecting a lower chord of the truss main body on a positioning support beam, so that two ends of the truss main body are respectively positioned in a placing space, and the support frame body can move back and forth on a guide rail along with a walking roller;

step three: hoisting a pre-paved first truss to a roof, adjusting the horizontal and vertical positions of the first truss through an electric hoist arranged at each hoisting point on the lower side of the truss main body, and then splicing the first truss;

step four: the winch is adopted to pull the movable drag hook on the supporting bottom beam, so that the whole supporting frame body walks on the guide rail through the walking roller, the assembled first truss is translated to the pre-installed roof position, the first truss is unloaded to the roof installation position, the supporting frame body is pulled again to drive the truss main body to translate and return to the initial position,

step five: and repeating the third step until the last truss is mounted, and then dismounting the truss main body from the support frame body as the last truss to be mounted on the corresponding position of the roof.

In summary, the invention adopts the above technical scheme, and the invention has the following technical effects:

(1) the truss translation device can be used for quickly assembling and translating the steel main truss and the secondary girder truss to the installation positions in a place with smaller lifting capacity and a narrow construction area, and carrying out quick, efficient and safe in-place installation, not only can accurately move to the specified installation positions, but also is stable, reliable, good in flexibility and high in safety, reduces the difficulty of in-place installation of the truss structure, and can effectively protect the concrete roof from structural damage and destruction in the hoisting and installation processes.

(2) The translation device can ensure the overall stability and rigidity of the truss main body, the construction method is simple and convenient to operate, the engineering progress and construction speed are greatly improved, the construction and installation reliability and construction quality are ensured, the truss installation operation efficiency is effectively improved, the action period is shortened, and manpower and material resources can be effectively saved.

Drawings

FIG. 1 is a schematic view of the general construction of a truss translation device of the present invention;

FIG. 2 is a schematic structural view of the support frame of the present invention;

FIG. 3 is a schematic view of a top end mounting structure of the support frame of the present invention;

FIG. 4 is a schematic structural view of the truss body of the present invention;

FIG. 5 is a schematic view of the mounting structure of the steel support arm and rectangular pipe clamp of the present invention;

in the attached drawings, a truss main body 1, a support frame body 2, a hoisting point 3, an upper chord 10, a lower chord 11, a support arm 12, an upper angle steel support arm 13, a lower angle steel support arm 14, a rectangular pipe hoop 15, a first connecting rod 16, a walking support 17, a second connecting rod 18, a support bottom beam 20, a first support column 21, a second support column 22, a walking roller 23, a baffle 23a, a movable drag hook 23b, a positioning support beam 24, a placing space 25, a support table 26, a placing groove 27, a third support column 28, a pull rod 29 and an electric hoist 30.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings by way of examples of preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

Referring to fig. 1 and 2, the truss translation device according to the present invention includes a truss body 1 and support frame bodies 2 vertically connected to two ends of the truss body 1, wherein each support frame body 2 includes a support base beam 20, a first support column 21, a second support column 22 and a traveling roller 23, two ends of the support base beam 20 are respectively and fixedly connected to a lower end of the first support column 21 and a lower end of the second support column 22 through the support base beam 21, an upper end of the first support column 21 and an upper end of the second support column 21 are connected in an inverted V shape, the bottom of the support base beam 20 is provided with the traveling roller 23, one or more lifting points 3 are provided at a lower side of the truss body 1, an electric hoist 30 is provided at each lifting point 3, each truss is lifted by the electric hoist 30 to move and adjust a position of the truss translation device, baffle plates 23a are arranged on two sides of the walking roller 23 in a rolling mode, the baffle plates 23a limit the walking roller 23 in a walking process, the walking roller 23 is prevented from derailing in the rolling process, moving drag hooks 23b are respectively arranged at two ends of the supporting bottom beam 20, a steel wire rope of a winch is connected with the moving drag hooks 23b, and the winch pulls the moving drag hooks 23b to enable the supporting frame body 2 to walk on a guide rail paved on a building roof through the walking roller 23.

In the present invention, as shown in fig. 1 and 3, a positioning support beam 24 parallel to the support base beam 20 is provided below the junction of the upper end of the first support column 21 and the upper end of the second support column 22, the two ends close to the positioning support beam 24 are respectively connected to the first support column 21 and the second support column 22, so that a placing space 25 is formed between the horizontal upper part of the positioning support beam 24 and the connecting part of the upper end of the first support column 21 and the upper end of the second support column 22, and the two ends of the positioning support beam 24 respectively extend outwards for a distance along the two ends of the first support column 21 and the second support column (22), the length of the outwards extending two ends of the positioning support beam 24 is 20cm-40cm, the upper side of the truss main body 1 is arranged on the surface of the joint of the upper end of the first supporting column 21 and the upper end of the second supporting column 21, and the lower side of the truss main body 1 is arranged on the positioning supporting beam 24; a supporting table 26 is arranged at the top of the placing space 25 and between the upper end of the first supporting column 21 and the upper end connecting part of the second supporting column 22, two sides of the supporting table 26 are connected with the inner side of the upper end of the first supporting column 21 and the inner side of the upper end of the second supporting column 22, placing grooves 27 are formed on the surface of the supporting table 26, the inner side of the upper end of the first supporting column 21 and the inner side of the upper end of the second supporting column 22, the upper sides of two ends of the truss main body 1 are respectively installed in the placing grooves 27 at the top end of the supporting frame body 2 at one corresponding side, the lower sides of two ends of the truss main body 1 are respectively placed in the placing space 25 at one corresponding side, the two ends of the truss main body 1 can be properly moved back and forth on the positioning supporting beams 24, and the two ends of the truss main body 1 can be effectively limited and fixed.

In the embodiment of the present invention, as shown in fig. 1 and 3, a third supporting column 28 is vertically disposed between the middle portion of the positioning supporting beam 24 and the supporting bottom beam 20, and a horizontal or inclined connecting rod 29 is disposed between the third supporting column 28 and the first supporting column 21 and between the third supporting column 28 and the second supporting column 22, where the connecting rod 29 not only can provide effective supporting strength for the first supporting column 21 and the second supporting column 22, but also can stably fix the third supporting column 28.

In the embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the truss body 1 is formed by connecting two or more detachable trusses, each truss includes an upper chord 10, a lower chord 11 and a support arm 12, truss support nodes 12 are sequentially arranged between the upper chord 10 and the lower chord 1 and are spaced from the head end to the tail end, the upper and lower ends of the truss support nodes 12 are respectively connected to the upper chord 10 and the lower chord 1, so that the truss support nodes 12 are vertically or obliquely connected to the upper chord 10 and the lower chord 1, 3 lifting points 3 are arranged below the lower chord 1, an electric hoist 30 is mounted at each lifting point, the support arm 12 is vertically or/and obliquely connected between the upper chord 10 and the lower chord 11, thereby forming a main truss body skeleton of each truss, after each main truss body skeleton forms the truss body 1, the two ends of the upper chord 10 are respectively correspondingly arranged on the surface of the joint of the upper end of the first support column 21 and the upper end of the second support column 21, the two ends of the lower chord 11 are respectively correspondingly arranged on the positioning support beam 24, the two ends of the upper chord 10 of the truss main body 1 are respectively arranged in the placing groove 27 of the support table 26 on the corresponding side, and the connecting screw holes are arranged in the placing groove 27, so that the upper chord 10 can be conveniently connected in the placing groove 27 formed between the upper end of the first support column 21 and the upper end of the second support column 22 through bolts, the upper chord 10 can be quickly and effectively limited and fixed, the two ends of the lower chord 11 of the truss main body 1 are respectively arranged in the narrow placing space 25 above the positioning support beam 24 on the corresponding side, the truss main body 1 can be effectively limited and fixed in the positioning support beam 24, and the two-side torsional offset of the truss main body 1 can be reduced, the stability of the truss in the translation process is improved, so that structural damage and damage caused by collision between the truss in the translation, hoisting and installation processes are avoided or reduced as much as possible.

In the embodiment of the present invention, as shown in fig. 1, 4 and 5, two symmetrical upper angle steel support arms 13 and lower angle steel support arms 14 are transversely disposed at intervals of 2m to 3.5m on the upper and lower sides of the outer wall of the upper chord 10 and the upper and lower sides of the outer wall of the lower chord 11, the ends of the upper angle steel support arms 13 and the ends of the lower angle steel support arms 14 are connected by rectangular pipe hoops 15, and first connecting rods 16 are respectively connected between the lower angle steel support arms 14 disposed on both sides of the upper chord 10 and the truss support sections 12 and between the upper angle steel support arms 13 disposed on both sides of the lower chord 11 and the truss support sections 12; the upper angle steel supporting arm 13 and the lower angle steel supporting arm 14 adopt L80 multiplied by 6 angle steel with the length of 0.9m, the rectangular pipe hoop 15 adopts RHS200 multiplied by 14 rectangular hoop with the length of 250mm, a walking bracket 17 is respectively and fixedly paved between the upper angle steel supporting arm 13 and the lower angle steel supporting arm 14 adjacent to both sides of the upper chord 10 and between the upper angle steel supporting arm 13 and the lower angle steel supporting arm 14 adjacent to both sides of the lower chord 11, the walking bracket 17 is connected with the rectangular pipe hoop 15, a second connecting rod 18 is connected between the walking bracket 17 and the close truss supporting node 12, the lower surface of the walking bracket 17 is fixedly connected with the upper surface of the lower angle steel supporting arm 14, the upper surface of the walking bracket 17 is fixedly connected with the lower surface of the upper angle steel supporting arm 13, the walking bracket 17 can also be directly fixed between the surfaces of the adjacent upper angle steel supporting arms 13 or on the surfaces of the adjacent lower angle steel supporting arms 14, the upper surface and the lower surface of an upper chord 10 and the outer walls of the upper side and the lower side of a lower chord 11 of a truss main body 1 are respectively welded and additionally provided with angle steel supporting arms with the width of 0.9m and L80 multiplied by 6 at intervals of 2m-3.5m, two sides of the chord are symmetrically provided with RHS200 multiplied by 14 rectangular pipe hoops with the length of 250mm every 3 m, the angle steel supporting arms and the rectangular pipe hoops are welded and fixed with the chord, the angle steel supporting arms and the corresponding chord are stabilized and reinforced with supporting strength through a first connecting rod 16, the truss span is large and is about 30m, under the action of inertia force during static state and starting/stopping, the structural plane external rigidity of most trusses is insufficient, in order to ensure the plane external rigidity of the whole structure, the walking bracket 17 is laid on the angle steel supporting arms of the upper chord and the lower chord, and a second connecting rod 18 is connected between the walking bracket 17 and the truss supporting section 12, meanwhile, the corresponding positions of the upper chord 10 and the lower chord 1 can be respectively provided with a fixed connecting plate 16a connected with the walking bracket 17, so that a reinforcing measure is further taken for the angle steel supporting arm, and the supporting strength and rigidity of the truss main body 1 are further improved.

According to another aspect of the invention, as shown in fig. 1, 2 and 4, the method or process for installing the truss by using the truss translation device of the invention comprises the following steps of prefabricating all main truss members in a factory, sending the prefabricated main truss members to a construction site in two sections, assembling the main truss members from the initial position of the truss main body 1 by using the steel truss translation device according to the sequence established by the scheme, and then translating the assembled main truss members to the installation position for installation;

the method comprises the following steps: analyzing and calculating the stress condition of the truss main body 1 to obtain the specification parameters of the truss main body 1, so that the truss main body 1 meets the strength requirement, wherein the truss main body 1 is made of Q235 steel, and the elastic modulus is 2.06 multiplied by 105N/mm 2; the Poisson ratio is 0.30; linear expansion coefficient of 1.20X 10-5; the mass density is 7850kg/m 3. Establishing a model in 3D3S according to the parameters to analyze and check the internal force and displacement of the truss main body 1, acquiring relevant parameters such as overall stability, shear stress ratio and slenderness ratio, laying two parallel guide rails for walking rollers 23 on a building roof, hoisting the support frame body 2 to the corresponding walking rails, and thus symmetrically arranging the support frame body 2 between the two parallel guide rails, wherein the support frame body 2 is arranged on the guide rails in a rolling manner through the walking rollers (23); then, connecting the trusses to form a truss main body 1 and hoisting the spliced truss main body 1 to a support frame body 2;

step two: fixing the upper chord 10 of the truss body 1 on the support base 26 between the upper ends of the first support column 21 and the upper end of the second support column 21, and simultaneously connecting the upper chord 10 of the truss body 1 in the placement groove 26 of the support base 26, and connecting the lower chord 11 of the truss body 1 to the positioning support beam 24 so that both ends of the truss body 1 are respectively positioned in the placement spaces 25, and the support frame body 2 can reciprocate on the guide rail along with the traveling rollers 23

Step three: hoisting a first pre-paved truss to a roof (the spliced truss can be hoisted to the roof or can be hung on the roof through an electric hoist 30 for splicing), pulling the first pre-paved truss through the electric hoist 30 installed at each hoisting point 3 on the lower side of the truss body 1, adjusting the horizontal and vertical positions of the first truss, and then stably placing the first truss in a placing space 25 formed between a placing groove 27 and a connecting position of the upper end of a positioning support beam 24 to the upper end of a first support column 21 and the upper end of a second support column 22;

step four: the whole support frame body 2 is made to travel on the guide rail through a traveling roller 23 by adopting a winch to pull a movable drag hook 23b on the support bottom beam 20, the assembled first truss is translated to a pre-installed roof position, the first truss is unloaded to the roof installation position, the verticality of the first truss is adjusted, the lateral bending condition of the first truss is checked, the first truss is temporarily fixed, the support frame body 2 is pulled again, and the truss body 1 is driven to translate and return to the initial position;

step five: repeating the third step and the fourth step until the last but one truss is finished, so that a whole with stable space is formed between every two adjacent trusses, meanwhile, the trusses are corrected between the trusses and the roof, the trusses are installed on a roof concrete beam foundation, before installation, the anti-falling ropes on the truss main body 1 are hung at the preset anchor bolt positions and firmly bound, and the trusses are lifted in place and then temporarily fixed on the anchor bolts, so that the verticality is conveniently corrected; after the installation adjustment is completed, the truss body 1 is finally removed from the support frame body 2 and installed as the last truss at the position corresponding to the roof.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims (10)

1. A truss translation device is characterized in that: truss translation device includes truss main part (1) and vertical support frame body (2) of connecting at truss main part (1) both ends, support frame body (2) including supporting floorbar (20), first support column (21), second support column (22) and walking gyro wheel (23), the both ends difference support column (21) fixed connection of supporting floorbar (20) the lower extreme of first support column (21) and the lower extreme of second support column (22), the upper end of first support column (21) and the upper end of second support column (21) are the font of falling V and connect the bottom of supporting floorbar (20) is provided with walking gyro wheel (23) truss main part (1) downside is provided with one or more point (3), is provided with hoist and mount electric block (30) on every hoist and mount point (3).

2. The truss translation device of claim 1, wherein: be provided with in the upper end of first support column (21) and the upper end junction below of second support column (22) with support parallel location supporting beam (24) of floorbar (20), being close location supporting beam (24)'s both ends are connected respectively on first support column (21) and second support column (22), make location supporting beam (24) to form between the upper end of first support column (21) and the upper end junction of second support column (22) and place space (25), the upside of truss main part (1) is established on the surface of the upper end of first support column (21) and the upper end junction of second support column (21), the downside of truss main part (1) is established location supporting beam (24) is last.

3. The truss translation device of claim 2, wherein: a supporting table (26) is arranged at the top of the placing space (25) and between the upper end of the first supporting column (21) and the upper end of the second supporting column (22), two sides of the supporting table (26) are connected with the inner side of the upper end of the first supporting column (21) and the inner side of the upper end of the second supporting column (22), and a placing groove (27) is formed in the surface of the supporting table (26), the inner side of the upper end of the first supporting column (21) and the inner side of the upper end of the second supporting column (22).

4. The truss translation device of claim 2, wherein: the utility model discloses a location support beam (24) is including location support beam (24) and first support column (21), the vertical third support column (28) that is provided with between the middle part of location support beam (24) and support floorbar (20), be provided with between third support column (28) and first support column (21) and between third support column (28) and second support column (22) and be level or slope pull rod (29) of connecting, the both ends of location support beam (24) are outwards stretched out along the both ends of first support column (21) and second support column (22) respectively, and its length of stretching out is 20cm-40 cm.

5. The truss translation device of claim 2, wherein: truss main part (1) is formed by two sections or multisection detachable truss connection each other, and every section truss includes chord member (10), lower chord member (11) and support arm (12) go up between chord member (10) and lower chord member (1) and set up truss support section (12) by head end to tail end direction interval distribution in proper order, the upper and lower both ends of this truss support section (12) are connected respectively on chord member (10) and lower chord member (1), the both ends of going up chord member (10) correspond respectively and set up on the surface at the upper end of first support column (21) and the upper end junction of second support column (21), the both ends of lower chord member (11) correspond respectively and set up on location supporting beam (24).

6. The truss translation device of claim 5, wherein: two symmetrical upper angle steel supporting arms (13) are transversely arranged on the upper side and the lower side of the outer wall of the upper chord (10) and the upper side and the lower side of the outer wall of the lower chord (11) at intervals of 2m-3.5m, lower angle steel supporting arms (14) are connected between the end parts of the upper angle steel supporting arms (13) and the lower angle steel supporting arms (14) through rectangular pipe hoops (15), and first connecting rods (16) are respectively connected between the lower angle steel supporting arms (14) and the truss supporting sections (12) which are arranged on the two sides of the upper chord (10) and between the upper angle steel supporting arms (13) and the truss supporting sections (12) which are arranged on the two sides of the lower chord (11).

7. The truss translation device of claim 6, wherein: the upper angle steel supporting arm (13) and the lower angle steel supporting arm (14) adopt L80 multiplied by 6 angle steel with the length of 0.9m, and the rectangular pipe hoop (15) adopts an RHS200 multiplied by 14 rectangular hoop with the length of 250 mm.

8. The truss translation device of claim 6, wherein: : walking brackets (17) are respectively fixedly laid between adjacent upper angle steel supporting arms (13) and lower angle steel supporting arms (14) on two sides of the upper chord (10) and between adjacent upper angle steel supporting arms (13) and lower angle steel supporting arms (14) on two sides of the lower chord (11), the walking brackets (17) are connected with the rectangular pipe hoop (15), and second connecting rods (18) are connected between the walking brackets (17) and the similar truss supporting sections (12).

9. The truss translation device of claim 1, wherein: baffle plates (23a) are arranged on two sides of the rolling walking of the walking rollers (23), and movable drag hooks (23b) are respectively arranged at two ends of the supporting bottom beam (20).

10. The truss installation method of a truss translation device as claimed in any one of claims 1 to 7, wherein: the method comprises the following steps:

the method comprises the following steps: analyzing and calculating the stress condition of the truss main body (1), acquiring specification parameters of the truss main body (1), enabling the truss main body (1) to meet the strength requirement, laying two parallel guide rails for walking of walking rollers (23) on a building roof, hoisting the support frame body (2) to the corresponding walking track, and symmetrically arranging the support frame body (2) between the two parallel guide rails; then, connecting the trusses to form a truss main body (1) and hoisting the spliced truss main body (1) to a support frame body (2);

step two: fixing an upper chord (10) of a truss main body (1) on a supporting table (26) between the upper end of a first supporting column (21) and the upper end of a second supporting column (21), simultaneously connecting the upper chord (10) of the truss main body (1) in a placing groove (27) of the supporting table (26), and connecting a lower chord (11) of the truss main body (1) on a positioning supporting beam (24), so that two ends of the truss main body (1) are respectively positioned in a placing space (25), and a supporting frame body (2) can move back and forth on a guide rail along with a walking roller (23);

step three: hoisting a pre-paved first truss to a roof, pulling the pre-paved first truss through an electric hoist (30) arranged at each hoisting point (3) on the lower side of the truss main body (1), adjusting the horizontal and vertical positions of the first truss, and then stably placing the first truss in a placing groove (27) and a positioning support beam (24) to a placing space (25) formed between the upper end of a first support column (21) and the upper end connection part of a second support column (22);

step four: the winch is adopted to pull the movable drag hook (23b) on the supporting bottom beam (20), so that the whole supporting frame body (2) travels on the guide rail through the traveling roller (23), the assembled first truss is translated to the pre-installed roof position, the first truss is unloaded to the roof installation position, the supporting frame body (2) is pulled again, and the truss main body (1) is driven to translate and return to the initial position;

step five: and repeating the third step to the fourth step until the last truss is mounted, and then dismounting the truss main body (1) from the support frame body (2) to be mounted on the corresponding position of the roof as the last truss.

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