Mobile operation platform suitable for assembling and erecting Hurenz type steel truss girder

Abstract

The invention discloses a mobile operation platform suitable for assembling and erecting a Hurenn type steel truss girder, which belongs to the technical field of bridge construction and comprises a mobile operation platform, a driving module and a plurality of groups of platform mobile supporting modules symmetrically mounted on a lower flange plate of an upper cross beam of the Hurenn type steel truss girder; the mobile operation platform comprises a platform module and an extension platform; the platform module and the four groups of platform mobile supporting modules are in limited sliding; extension platforms are symmetrically mounted on the two sides of the platform module; driving modules are further mounted on the platform module and the lower flange plate of the upper cross beam; the driving module comprises a chain block, a fixed seat and a guide module, the fixed seat is fixedly mounted on a lower flange plate of the upper cross beam through a fixing bolt, and the chain block is fixedly mounted on the platform module; and a guide module for guiding a hoisting chain wheel of the chain block is mounted on the platform module. Through the mode, the construction requirements of various nodes of the steel beam are met, the construction cost is saved, the construction procedure is simplified, and the construction convenience is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a mobile operating platform suitable for assembling and erecting Warren type steel trusses. Background Art

[0002] During the steel beam erection construction, after each section of the steel truss is hoisted into place, a temporary hinged device is often used to temporarily align and connect the section to be erected with the section that has already been erected, and the steel beams are permanently connected when the time is right. After the hoisting and docking of the steel beams of the entire bridge are completed, the bridge deck at the connection is installed.

[0003] Due to the large number of connection nodes, the assembly and erection of Warren steel trusses currently require a large number of construction operation platforms. The node alignment connection usually adopts a steel frame operation platform, and the bridge deck U-rib operation platform usually adopts a hook-type platform arranged along the upper crossbeam across the length of the bridge, and a steel springboard is laid as the working area.

[0004] In the assembly construction of Warren steel trusses, loose assembly is generally used in the steel beam assembly field. Steel trusses are generally bolted and welded, with many construction nodes. At the same time, the construction requires an operating platform, so there are many types of construction platforms, a large number, and a large amount of profiles. At the same time, considering the erection of steel beams at the bridge site, the construction operation platform is often unable to be removed after the assembly is completed. In addition, before each round of steel beam assembly, it takes a lot of time to install the construction platform on the steel beam rod, which greatly reduces the efficiency of steel beam assembly.

[0005] During the erection of the steel beams of the suspension bridge, an operating platform is required because the bridge position needs to be connected by bolts and welding. Generally, the operating platform is installed after the steel beams are assembled. There are many connection nodes at the bridge position, especially the U-rib connection at the bottom of the bridge deck, which is also accompanied by the problem of many types of construction platforms and large usage. In addition, since the bridge position is usually in a high-altitude working state, the common hanging frame operating platform is difficult to dismantle, especially the bridge deck U-rib docking construction platform, which usually adopts a hook-type platform arranged along the upper crossbeam across the bridge, and a steel springboard is laid along the entire length as the working area. This method is risky when the platform is dismantled.

[0006] Based on this, the present invention designs a mobile operating platform suitable for assembling and erecting Warren steel trusses to solve the above problems. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, the present invention provides a mobile operating platform suitable for assembling and erecting Warren-type steel trusses.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A mobile operating platform suitable for assembling and erecting Warren steel trusses, comprising a mobile operating platform, a drive module and a plurality of platform mobile supporting modules symmetrically mounted on the lower flange plate of the upper cross beam of the Warren steel truss;

[0010] The mobile operating platform includes a platform module and an extension platform. The platform module and four sets of platform mobile support modules are limited and slidable. The extension platforms are symmetrically installed on both sides of the platform module.

[0011] A driving module for driving the platform module to move is also installed on the platform module and the lower flange plate of the upper crossbeam; the driving module includes a hand chain hoist, a fixing seat and a guide module, the fixing seat is fixedly installed on the lower flange plate of the upper crossbeam by fixing bolts, and the hand chain hoist is fixedly installed on the platform module; a guide module for guiding the lifting sprocket of the hand chain hoist is installed on the platform module.

[0012] Furthermore, the platform movable support modules are provided in at least six groups, and the six groups of platform movable support modules are evenly distributed at equal intervals on the lower flange plate of the upper cross beam.

[0013] Furthermore, the platform mobile support module includes a sports car connecting seat and a pulley sports car. The sports car connecting seat is fixedly connected to the lower flange plate of the upper cross beam by fixing bolts, and the pulley sports car is fixedly installed on the lower side of the sports car connecting seat.

[0014] Furthermore, the platform module includes a supporting truss, a fixed platform and a movable track. The fixed platform is symmetrically fixedly installed in the middle of the supporting truss, and the movable track is symmetrically fixedly installed on the top of the supporting truss; the movable track rolls in close contact with the pulley sports car.

[0015] Furthermore, the extension platform includes a folding structure and a supporting structure, and a group of folding structures and a supporting structure are respectively installed on both sides of the supporting truss and the fixed platform.

[0016] Furthermore, the folding structure includes a support chain, a support platform and a support side plate, and support side plates are fixedly installed on both sides of the support platform; one end of the support side plate is rotatably installed on the fixed platform; one end of the support chain is fixedly connected to the support side plate, and the other end of the support chain is fixedly connected to the support truss.

[0017] Furthermore, the supporting structure includes a supporting seat, a pull rod and a locking pin. The supporting seat is fixedly mounted on the supporting side panel, and one end of the pull rod is rotatably connected to the supporting seat. A locking groove is provided on the supporting truss; a fixed locking groove is provided on the supporting side panel and is aligned with the locking groove when the supporting side panel is folded; a supporting locking groove is provided on the pull rod; and the locking pin is plugged into the fixed locking groove, the supporting locking groove and the locking groove.

[0018] Furthermore, the edge of the fixed platform is provided with a clearance groove for accommodating the pull rod when the supporting platform and the supporting side plate are folded upward.

[0019] Furthermore, the guide module includes a steering guide wheel and a swivel guide wheel, which are fixedly mounted on the support truss. The steering guide wheel is located on the upper side of the hand chain hoist, and the fixing seat is located on the side of the steering guide wheel close to the moving direction of the support truss; the swivel guide wheel is located on the other side of the steering guide wheel.

[0020] Furthermore, the lifting sprocket of the hand chain hoist passes around the steering guide wheel and the slewing guide wheel in sequence and is connected to the fixed seat.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Multiple sets of platform mobile support modules are fixedly installed on the lower flange plate of the upper cross beam, and then the platform modules are moved to the corresponding positions by a crane, and the platform modules are supported by multiple sets of platform mobile support modules; the fixed seat is fixedly installed on the lower flange plate of the upper cross beam, the end of the lifting sprocket of the hand chain hoist is hung on the fixed seat, and the lifting sprocket is guided by the guide module; the personnel on the platform module can change the distance between the lifting sprocket of the hand chain hoist and the guide module and the fixed seat by driving the hand chain hoist, thereby driving the platform module to move between the platform mobile support modules; during the movement, the extended platform The platform is in a folded state, so as to avoid the extension platform being blocked by the diagonal brace plate in the middle of the Warren steel truss, making the platform as a whole easier to move; after the extension platform and the diagonal brace plate are misaligned, the extension platform can be unfolded, thereby expanding the platform space for carrying people and increasing the scope of the working area; and it is convenient for the movement of personnel on adjacent platform modules and the extension platform; after the platform module moves one end distance along the lower flange plate of the upper crossbeam to make a group of platform mobile support modules detach from the platform module, the platform mobile support module detached from the platform module can be removed from the lower flange plate of the upper crossbeam, and fixedly installed on the lower flange plate of the upper crossbeam located in the moving direction of the platform module, so that the platform module can be continuously moved;

[0022] 2. The cooperation of the platform mobile support module, platform module and extension platform can meet the construction requirements of various types of steel beam nodes; in particular, the U-rib construction platform of the bridge deck reduces the use of the hanging basket operation platform during the construction process, saving construction costs; at the same time, the operation platform can be disassembled in sections, which simplifies the construction process when used in turn, greatly increasing the convenience of construction;

[0023] 3. During the construction of Warren steel truss girder, there are many construction baskets at each connection node, and the removal of the construction baskets is usually carried out on-site, especially for the U-rib construction platform of the bridge deck, which is often accompanied by high-altitude operations and has a high risk of removal. The present invention replaces the original operation basket, simplifies the removal process of the construction platform at the bridge site, and only needs to move the platform to the end of the steel beam for overall removal, which greatly reduces the construction risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 The invention is a three-dimensional mobile operating platform suitable for assembling Warren steel trusses and setting up mobile operating platforms. Figure 1 ;

[0026] Figure 2 It is a front view of a mobile operating platform suitable for assembling and erecting Warren steel trusses of the present invention;

[0027] Figure 3 Schematic diagram of the supporting truss and its connection structure;

[0028] Figure 4 It is a schematic diagram of the mobile track and its connection structure;

[0029] Figure 5 It is a schematic diagram of the supporting platform and its connection structure;

[0030] Figure 6 for Figure 4 Enlarged view of point A in the middle;

[0031] Figure 7 is a schematic diagram of the pull rod and its connection structure;

[0032] Figure 8 Schematic diagram of the lifting sprocket and its connection structure.

[0033] The numbers in the figure represent:

[0034] 1. Warren steel truss; 11. Upper crossbeam lower flange plate; 12. Diagonal brace plate; 2. Mobile operating platform; 21. Platform module; 211. Support truss; 212. Fixed platform; 213. Mobile track; 22. Extension platform; 221. Support chain; 222. Support seat; 223. Pull rod; 224. Locking pin; 225. Fixed locking groove; 226. Support locking groove; 227. Support platform; 228. Support side plate; 229. Locking groove; 4. Platform mobile support module; 41. Sports car connecting seat; 42. Pulley sports car; 3. Drive module; 31. Hand chain hoist; 311. Lifting sprocket; 32. Fixed seat; 33. Guide module; 331. Steering guide wheel; 332. Rotating guide wheel. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0037] Embodiment 1: In some embodiments, please refer to the drawings of the specification Figure 1-Figure 6 , a mobile operating platform suitable for assembling and erecting Warren steel trusses, comprising a mobile operating platform 2, a driving module 3 and a plurality of platform mobile supporting modules 4 symmetrically mounted on the upper cross beam lower flange plate 11 of the Warren steel truss 1;

[0038] The mobile operating platform 2 includes a platform module 21 and an extension platform 22. The platform module 21 and the four sets of platform mobile support modules 4 are limited and slidable. The extension platforms 22 are symmetrically installed on both sides of the platform module 21.

[0039] A driving module 3 for driving the platform module 21 to move is also installed on the platform module 21 and the lower flange plate 11 of the upper beam; the driving module 3 includes a hand winch 31, a fixing seat 32 and a guide module 33; the fixing seat 32 is fixedly installed on the lower flange plate 11 of the upper beam by fixing bolts, and the hand winch 31 is fixedly installed on the platform module 21; a guide module 33 for guiding the lifting sprocket 311 of the hand winch 31 is installed on the platform module 21.

[0040] In this embodiment, when the mobile operation platform for assembling and erecting Warren steel trusses is working normally, multiple sets of platform mobile support modules 4 are fixedly installed on the lower flange plate 11 of the upper beam, and then the platform module 21 is moved to the corresponding position by a crane, and the platform module 21 is supported by multiple sets of platform mobile support modules 4; the fixed seat 32 is fixedly installed on the lower flange plate 11 of the upper beam, the end of the lifting sprocket 311 of the hand chain hoist 31 is hung on the fixed seat 32, and the lifting sprocket 311 is guided by the guide module 33; the personnel on the platform module 21 can drive The hand chain hoist 31 is manually pulled to change the distance between the lifting sprocket 311 of the hand chain hoist 31 and the guide module 33 and the fixed seat 32, thereby driving the platform module 21 to move between the platform moving support modules 4; during the movement, the extension platform 22 is in a retracted state, thereby preventing the extension platform 22 from being blocked by the diagonal brace plate 12 in the middle of the Warren steel truss 1, making the platform as a whole easier to move; after the extension platform 22 and the diagonal brace plate 12 are misaligned, the extension platform 22 can be unfolded, thereby expanding the platform space for carrying people and increasing the scope of the working area; and it is convenient for adjacent platform modules 21 and extension modules to move. The personnel on the platform 22 move; after the platform module 21 moves a certain distance along the lower flange plate 11 of the upper cross beam so that a group of platform moving support modules 4 are separated from the platform module 21, the platform moving support module 4 separated from the platform module 21 can be removed from the lower flange plate 11 of the upper cross beam, and fixedly installed on the lower flange plate 11 of the upper cross beam located in the moving direction of the platform module 21, so that the platform module 21 can be continuously moved; thus, the cooperation of the platform moving support module 4, the platform module 21 and the extension platform 22 can meet the construction requirements of various types of steel beam nodes; especially the U-rib construction level of the bridge deck The platform reduces the use of the hanging basket operating platform during the construction process and saves construction costs; at the same time, the operating platform can be disassembled in sections, which simplifies the construction process when used in rotation and greatly increases the convenience of construction; at the same time, when constructing the Warren steel truss, there are many construction hanging baskets at each connection node, and the removal of the construction hanging baskets is usually carried out in situ, especially the U-rib construction platform of the bridge deck, which is often accompanied by high-altitude operations and has a high removal risk; the present invention replaces the original operating hanging basket, simplifies the removal process of the construction platform at the bridge site, and only needs to move the platform to the end of the steel beam for overall removal, which greatly reduces the construction risk.

[0041] Embodiment 2: In some embodiments, Figure 1-Figure 8 As shown, as a preferred embodiment of the present invention, the platform moving support modules 4 are provided with at least six groups, and the six groups of platform moving support modules 4 are evenly distributed on the lower flange plate 11 of the upper cross beam at equal intervals;

[0042] The platform mobile support module 4 includes a sports car connecting seat 41 and a pulley sports car 42. The sports car connecting seat 41 is fixedly connected to the lower flange plate 11 of the upper cross beam by fixing bolts, and the pulley sports car 42 is fixedly installed on the lower side of the sports car connecting seat 41;

[0043] The platform module 21 includes a support truss 211, a fixed platform 212 and a moving track 213. The fixed platform 212 is symmetrically fixedly installed in the middle of the support truss 211, and the moving track 213 is symmetrically fixedly installed on the top of the support truss 211; the moving track 213 is fitted and rolled with the pulley sports car 42;

[0044] The hand chain hoist 31 is fixedly mounted on the supporting truss 211;

[0045] The extension platform 22 includes a folding structure and a supporting structure, and a group of folding structures and supporting structures are respectively installed on both sides of the support truss 211 and the fixed platform 212;

[0046] The folding structure includes a support chain 221, a support platform 227 and a support side plate 228. The support side plates 228 are fixedly installed on both sides of the support platform 227; one end of the support side plate 228 is rotatably installed on the fixed platform 212; one end of the support chain 221 is fixedly connected to the support side plate 228, and the other end of the support chain 221 is fixedly connected to the support truss 211;

[0047] The supporting structure includes a supporting seat 222, a pull rod 223 and a locking pin 224. The supporting seat 222 is fixedly mounted on the supporting side plate 228, and one end of the pull rod 223 is rotatably connected to the supporting seat 222; a locking groove 229 is provided on the supporting truss 211; a fixed locking groove 225 is provided on the supporting side plate 228 and is aligned with the locking groove 229 when the supporting side plate 228 is folded; a supporting locking groove 226 is provided on the pull rod 223; the locking pin 224 is plugged with the fixed locking groove 225, the supporting locking groove 226 and the locking groove 229; a limiting block is fixedly mounted on one end of the locking pin 224, and a through hole is provided on the other end of the locking pin 224, and the locking pin 224 is locked by inserting a vertical pin rod into the through hole;

[0048] The edge of the fixed platform 212 is provided with a clearance groove for accommodating the pull rod 223 when the supporting platform 227 and the supporting side plate 228 are folded upward;

[0049] The guide module 33 includes a steering guide wheel 331 and a swivel guide wheel 332, and the steering guide wheel 331 and the swivel guide wheel 332 are fixedly mounted on the support truss 211. The steering guide wheel 331 is located on the upper side of the hand chain hoist 31, and the fixing seat 32 is located on the side of the steering guide wheel 331 close to the moving direction of the support truss 211; the swivel guide wheel 332 is located on the other side of the steering guide wheel 331;

[0050] The lifting sprocket 311 of the hand chain hoist 31 passes through the steering guide wheel 331 and the rotary guide wheel 332 in sequence and then is connected to the fixing seat 32 .

[0051] In this embodiment, when the platform module 21, the extension platform 22, the drive module 3 and the platform movement support module 4 are working normally, the sports car connecting seat 41 is clamped with the lower flange plate 11 of the upper beam, and the sports car connecting seat 41 is fixed by fixing bolts, so that the sports car connecting seat 41 is fixed to the lower flange plate 11 of the upper beam; the pulley sports car 42 on the lower side of the sports car connecting seat 41 is fitted and rolled with the moving track 213 to achieve the limitation and support of the moving track 213, thereby achieving the support of the supporting truss 211; the fixed platform 212 is able to move stably along the lower flange plate 11 of the upper beam through the supporting truss 211 and the moving track 213; it is convenient for personnel on the fixed platform 212 to move and operate in the Warren steel truss 1; the fixed seat 32 is installed The hand chain hoist 31 is driven to change the distance between the lifting sprocket 311 of the hand chain hoist 31 and the rotating guide wheel 332 and the fixed seat 32, thereby driving the moving track 213 to roll between the multiple groups of pulley carriages 42, and then driving the moving track 213, the fixed platform 212 and the supporting truss 211 to move; by setting the positions of the steering guide wheel 331 and the rotating guide wheel 332, the fixed seat 32 can be fixedly installed and disassembled on the fixed platform 212; in the process of movement, in order to avoid In order to avoid being blocked by the diagonal support plate 12, the support platform 227 and the support side plate 228 can be folded upward, at this time, the fixed locking groove 225 is aligned with the locking groove 229, and the locking pin 224 passes through the fixed locking groove 225 and the locking groove 229 to complete the locking of the support platform 227 and the support side plate 228. At this time, the other end of the pull rod 223 is located in the yielding groove; at this time, the overall length is short, which is convenient for the platform to move; after the fixed platform 212 is misaligned with the diagonal support plate 12, the locking pin 224 can be pulled out to disengage the locking pin 224 from the fixed locking groove 225 and the locking groove 229, and the support side plate 228 and the support platform 227 are unlocked, so that the support platform 227 and the support side plate 228 are folded downward until the support platform 227 and the support side plate 228 are aligned with the fixed The platforms 212 are located in the same plane; at this time, the support chain 221 is straightened, the support platform 227 is supported by the support side plate 228, and the end of the support side plate 228 is supported by the support chain 221; thereby, simple support is achieved, and then the pull rod 223 is rotated to align the support locking groove 226 at the end of the pull rod 223 with the locking groove 229, and the locking pin 224 is inserted into the support locking groove 226 and the locking groove 229 to complete the fixation of the pull rod 223, and the support side plate 228 is supported by the pull rod 223, thereby effectively ensuring the support strength of the support platform 227; allowing personnel to work on the support platform 227, expanding the operating range of the overall load-bearing platform; at the same time, it is convenient for personnel on the adjacent fixed platform 212 and the support platform 227 to move.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile operating platform suitable for assembling and erecting Warren steel trusses, comprising a mobile operating platform (2), a drive module (3) and a plurality of platform mobile support modules (4) symmetrically mounted on the upper beam lower flange plate (11) of the Warren steel truss (1), characterized in that: The mobile operating platform (2) comprises a platform module (21) and an extension platform (22); the platform module (21) and four sets of platform mobile support modules (4) are limitedly slidable; the extension platforms (22) are symmetrically mounted on both sides of the platform module (21); A driving module (3) for driving the platform module (21) to move is also installed on the platform module (21) and the upper crossbeam lower flange plate (11); the driving module (3) comprises a hand chain hoist (31), a fixing seat (32) and a guide module (33); the fixing seat (32) is fixedly installed on the upper crossbeam lower flange plate (11) by fixing bolts, and the hand chain hoist (31) is fixedly installed on the platform module (21); and a guide module (33) for guiding a lifting sprocket (311) of the hand chain hoist (31) is installed on the platform module (21).

2. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 1 is characterized in that: At least six groups of platform movable support modules (4) are provided, and the six groups of platform movable support modules (4) are evenly distributed at equal intervals on the lower flange plate (11) of the upper cross beam.

3. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 1 is characterized in that: The platform mobile support module (4) comprises a sports car connecting seat (41) and a pulley sports car (42); the sports car connecting seat (41) is fixedly connected to the upper cross beam lower flange plate (11) via fixing bolts; and the pulley sports car (42) is fixedly installed on the lower side of the sports car connecting seat (41).

4. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 1 is characterized in that: The platform module (21) comprises a supporting truss (211), a fixed platform (212) and a movable track (213); the fixed platform (212) is symmetrically fixedly installed in the middle of the supporting truss (211), and the movable track (213) is symmetrically fixedly installed on the top of the supporting truss (211); the movable track (213) is fitted and rolled with the pulley sports car (42).

5. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 4 is characterized in that: The extension platform (22) comprises a folding structure and a supporting structure, and a group of folding structures and a supporting structure are respectively installed on both sides of the supporting truss (211) and the fixed platform (212).

6. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 5 is characterized in that: The folding structure comprises a support chain (221), a support platform (227) and a support side plate (228); support side plates (228) are fixedly installed on both sides of the support platform (227); one end of the support side plate (228) is rotatably installed on the fixed platform (212); one end of the support chain (221) is fixedly connected to the support side plate (228), and the other end of the support chain (221) is fixedly connected to the support truss (211).

7. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 6 is characterized in that: The support structure includes a support seat (222), a pull rod (223) and a locking pin (224); the support seat (222) is fixedly mounted on a support side plate (228); one end of the pull rod (223) is rotatably connected to the support seat (222); a locking groove (229) is provided on the support truss (211); a fixed locking groove (225) is provided on the support side plate (228) and is aligned with the locking groove (229) when the support side plate (228) is folded; a support locking groove (226) is provided on the pull rod (223); and the locking pin (224) is plugged into the fixed locking groove (225), the support locking groove (226) and the locking groove (229).

8. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 7 is characterized in that: The edge of the fixed platform (212) is provided with a clearance groove for accommodating the pull rod (223) when the supporting platform (227) and the supporting side plate (228) are folded upward.

9. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 4 is characterized in that: The guide module (33) comprises a steering guide wheel (331) and a swivel guide wheel (332), wherein the steering guide wheel (331) and the swivel guide wheel (332) are fixedly mounted on the support truss (211); the steering guide wheel (331) is located on the upper side of the hand chain hoist (31), and the fixed seat (32) is located on the side of the steering guide wheel (331) close to the moving direction of the support truss (211); and the swivel guide wheel (332) is located on the other side of the steering guide wheel (331).

10. The mobile operating platform for assembling and erecting Warren steel trusses according to claim 9, characterized in that: The lifting chain wheel (311) of the hand chain hoist (31) is connected to the fixing seat (32) after passing through the steering guide wheel (331) and the rotary guide wheel (332) in sequence.

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