CN116374801A - Truss device suitable for transporting large-scale work piece - Google Patents

Abstract

The invention provides a truss device suitable for transferring large-scale workpieces, and relates to the field of truss transfer. The truss device comprises a truss main body assembly, a main body driving mechanism and a lifting hook assembly; the truss main body comprises a main body end beam and a main body cross beam, and the main body cross beam is connected with the main body end beam; the main body driving mechanism comprises a main body driving piece, a main body driving transmission piece and a first sliding rail structure, wherein the main body driving piece is arranged on the main body cross beam and is in transmission connection with the main body driving transmission piece, and the main body driving transmission piece comprises a transmission shaft, a first gear and a first rack; the hook assembly is slidably mounted to and slidable relative to the main body cross member, and the hook assembly includes a hook mount, a hook body, a first drive mechanism, a second drive mechanism, and a third drive mechanism. The invention can increase the lifting travel range and reduce the space occupation above the truss; meanwhile, the automation of the whole transfer process can be realized.

Description

A truss device suitable for transferring large workpieces

technical field

The invention relates to the field of truss transfer, in particular to a truss device suitable for transferring large workpieces.

Background technique

The truss transfer device consists of two traveling end beams and two cross beams to form a traveling cart. In the prior art, large trusses are usually required for transfer of large workpieces. On the one hand, large trusses take up a lot of space; Travel is limited.

Contents of the invention

The purpose of the present invention includes, for example, providing a truss device suitable for transferring large workpieces, which can increase the range of lifting strokes and reduce the space occupied above the truss; at the same time, it can realize the automation of the entire transfer process.

Embodiments of the present invention can be realized like this:

An embodiment of the present invention provides a truss device suitable for transferring large workpieces, including a truss main body assembly, a main body driving mechanism, and a hook assembly;

The truss main body includes a main body end beam and a main body beam, and the main body beam is connected to the main body end beam; the main body driving mechanism includes a main body driving part, a main body driving transmission part and a first slide rail structure, and the main body driving part Installed on the beam of the main body and connected to the driving transmission part of the main body, the driving transmission part of the main body includes a transmission shaft, a first gear and a first rack, and the driving transmission part of the main body is connected in transmission to the transmission shaft , the transmission shaft is connected to the first gear, the first gear meshes with the first rack, the first rack is installed on the fixed truss at both ends, and the first slide rail structure is respectively Connected with the main body beam and the fixed truss, the main body driver is used to slide the truss main body along the fixed truss at both ends;

The hook assembly is slidably installed on the main body beam and can slide relative to the main body beam, and the hook assembly includes a hook installation part, a hook body, a first driving mechanism, a second driving mechanism and a third driving mechanism. A driving mechanism, the hook mounting part is slidably mounted on the main beam, the first driving mechanism is mounted on the hook mounting part and can make the hook mounting part relative to the main body beam The extension direction moves; the second driving mechanism is installed on the hook mounting part and can be stretched downward relative to the hook mounting part, and the third driving mechanism is transmission-connected with the second driving mechanism and can Relative to the second driving mechanism, the hook body is mounted on the third driving mechanism.

Further, in an optional embodiment, the first driving mechanism includes a first driving member, a first transmission shaft, a first gear and a first rack, and the first driving member is installed on the hook. On the part, the first transmission shaft is in transmission connection with the first driving part, the first gear is in transmission connection with the first transmission shaft, the first rack meshes with the first gear, and the The first rack is installed on the main beam.

Further, in an optional embodiment, the first drive mechanism further includes a second slide rail structure, the second slide rail structure includes a second linear slide rail and a second slider, and the second linear slide The rail is slidably matched with the second sliding block, one of the second linear sliding rail and the second sliding block is connected with the hook installation part, and the other is connected with the main body beam.

Further, in an optional embodiment, the second driving mechanism includes a driving installation, a second driving member, a lifting reducer, a second gear and a second rack, and the driving installation is connected to the hook The mounting part is slidingly connected, the second driving part is connected with the hook mounting part, and is transmitted through the lifting reducer and the second gear, and the second rack is installed on the driving mounting part, and meshes with the second gear.

Further, in an optional embodiment, the second drive mechanism further includes a third slide rail structure, the third slide rail structure includes a third linear slide rail and a third slider, and the third linear The slide rail is slidably matched with the third slide block, one of the third linear slide rail and the third slide block is connected to the hook mounting part, and the other is connected to the drive mounting part.

Further, in an optional embodiment, the third driving mechanism is an electric cylinder, the electric cylinder is connected to the driving installation part, and the hook body is connected to the electric cylinder.

Further, in an optional embodiment, the drive installation part is a box structure and is provided with a hollow installation space, and the hollow installation space is used for accommodating the electric cylinder.

Further, in an optional embodiment, the driving motor of the electric cylinder is a servo motor, and guide rods are provided on both sides of the electric cylinder.

Further, in an optional embodiment, the first sliding rail structure includes a first linear sliding rail and a first sliding block, and the first linear sliding rail is slidably matched with the first sliding block, so One of the first linear slide rail and the first sliding block is connected to the main beam, and the other is connected to the fixed truss.

Further, in an optional embodiment, the main body end beam adopts a box-type end beam structure, and is welded into a box-type structure through steel plates.

The truss device suitable for transporting large workpieces provided by the present invention has the following beneficial effects: the truss main body is the main structure of the truss device, the truss main body includes a main body end beam and a main body cross beam, and the main body end beams are installed on the fixed trusses at both ends. Fixed trusses are used to support and provide a track for the movement of the truss body. The main body drive mechanism is used to make the truss main body move relative to the fixed truss. The main body drive mechanism includes a transmission shaft, a first gear and a first rack. The transmission shaft can be driven by a motor, and the transmission shaft drives the first gear to rotate. The first gear Engaging with the first rack, the first rack is fixed on the fixed truss, so that the first gear and the truss main body move relative to the fixed truss to realize the motion control of the truss main body. The hook assembly can move on the main body of the truss, and can be stretched downward to realize the hook operation of the object to be hooked. In this embodiment, the hook assembly can be used to hook a circular workpiece. Specifically, in the embodiment of the present invention, the hook assembly includes a hook mounting part, a hook body, a first driving mechanism, a second driving mechanism and a third driving mechanism, and the hook mounting part is used to install the first driving mechanism and the second drive mechanism, wherein the first drive mechanism is used to move the hook body relative to the main beam, the second drive mechanism is used to make the hook body expand and contract downward relative to the hook mounting part, and the third drive mechanism is used to make the hanger The hook body is telescopic relative to the second driving mechanism. In the embodiment of the present invention, the hook assembly realizes translational movement relative to the main body of the truss through the first driving mechanism, and realizes two-stage telescopic movement up and down through the second driving mechanism and the third driving mechanism, which can increase the lifting stroke range and reduce the truss weight at the same time. The space above takes up. In the embodiment of the present invention, the truss device can realize the automation of the whole transfer process without manual participation.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the invention and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained based on these drawings without creative effort.

Fig. 1 is a structural schematic diagram of a truss device suitable for transferring large workpieces described in a specific embodiment of the present invention;

Fig. 2 is a structural schematic diagram of a truss device suitable for transferring large workpieces according to a specific embodiment of the present invention under another viewing angle;

Fig. 3 is a schematic structural view of the truss body assembly described in a specific embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the truss main assembly described in a specific embodiment of the present invention under another viewing angle;

Fig. 5 is the schematic structural diagram of the method at place A in Fig. 4;

Fig. 6 is the schematic structural diagram of the method at place B in Fig. 5;

Fig. 7 is a schematic structural view of the hook assembly described in a specific embodiment of the present invention;

Fig. 8 is a schematic structural diagram of the method at C in Fig. 7;

Fig. 9 is a structural schematic diagram of the hook assembly described in a specific embodiment of the present invention under another viewing angle;

Fig. 10 is a schematic structural view of the second driving mechanism described in a specific embodiment of the present invention;

Fig. 11 is a schematic structural view of the hook assembly according to another embodiment of the present invention.

Icons: 10-truss device; 101-fixed truss; 100-truss main component; 110-main end beam; 120-main beam; 200-main driving mechanism; 210-main driving part; Transmission shaft; 222-first gear; 223-first rack; 230-first slide rail structure; 231-first linear slide rail; 232-first slider; 300-hook assembly; 310-hook Mounting part; 320-hook body; 330-first driving mechanism; 331-first driving member; 332-first transmission shaft; 333-first gear; 334-first rack; 335-second slide rail structure ; 3351-the second linear slide rail; 3352-the second slider; 340-the second drive mechanism; The second rack; 347-the third slide rail structure; 3471-the third linear slide rail; 3472-the third slide block;

350 - Third drive mechanism.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions 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. Apparently, the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

It should be noted that, in the case of no conflict, the features in the embodiments of the present invention may be combined with each other.

The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Figures 1 to 11, this embodiment provides a truss device 10 suitable for transporting large workpieces, which can increase the range of lifting strokes and reduce the space occupied above the truss; at the same time, it can realize the automation of the entire process of transfer.

The truss device 10 suitable for transferring large workpieces provided by the embodiment of the present invention includes a truss main assembly 100, a main driving mechanism 200 and a hook assembly 300; wherein, the truss main assembly 100 is the main structure of the truss device 10, and the main driving mechanism 200 The hook assembly 300 is used to move along the truss body assembly 100 , and the hook assembly 300 is used to realize the hook function of the truss device 10 .

In this embodiment, the truss body includes a main body end beam 110 and a main body beam 120, and the main body beam 120 is connected to the main body end beam 110; the main body driving mechanism 200 includes a main body driving member 210, a main body driving transmission member 220 and a first slide rail structure 230 , the main body driving part 210 is installed on the main body beam 120 and is connected with the main body driving transmission part 220. The main body driving transmission part 220 includes a transmission shaft 221, a first gear 333222 and a first rack 334223. The main body driving transmission part 220 and the transmission shaft 221 transmission connection, the transmission shaft 221 is connected with the first gear 333222, the first gear 333222 is meshed with the first rack 334223, the first rack 334223 is installed on the fixed truss 101 at both ends, the first slide rail structure 230 is respectively connected with the main body The beam 120 is connected to the fixed truss 101 , and the main body driving member 210 is used to make the main body of the truss slide along the fixed truss 101 at both ends. The hook assembly 300 is slidably installed on the main beam 120 and can slide relative to the main beam 120. The hook assembly 300 includes a hook mounting part 310, a hook body 320, a first driving mechanism 330, a second driving mechanism 340 and a third driving mechanism. The driving mechanism 350, the hook mounting part 310 is slidably installed on the main beam 120, the first driving mechanism 330 is mounted on the hook mounting part 310 and can move the hook mounting part 310 relative to the extension direction of the main body beam 120; The second driving mechanism 340 is installed on the hook mounting part 310 and can be stretched downward relative to the hook mounting part 310. The third driving mechanism 350 is in transmission connection with the second driving mechanism 340 and can be stretched relative to the second driving mechanism 340. The hook The body 320 is installed on the third driving mechanism 350 .

It should be pointed out that in the embodiment of the present invention, the truss body is the main structure of the truss device 10, and the truss body includes a main body end beam 110 and a main body beam 120. As shown in the figure, the main body end beams 110 are located at both ends, which can be It is a box-type end beam structure; there are two main body beams 120, which are connected side by side with the main body end beams 110 at both ends. In this embodiment, the main body end beams 110 are installed on the fixed trusses 101 at both ends, and the fixed trusses 101 are used to support and provide a moving track for the main body of the truss. The main body driving mechanism 200 is used to move the truss main body relative to the fixed truss 101. The main body driving mechanism 200 includes a main body driving member 210, a main body driving transmission member 220 and a first slide rail structure 230, and the main body driving transmission member 220 includes a transmission shaft 221, The first gear 333222 and the first rack 334223, the transmission shaft 221 can be driven by a motor, the transmission shaft 221 drives the first gear 333222 to rotate, the first gear 333222 meshes with the first rack 334223, and the first rack 334223 is fixed on Fix the truss 101, so that the first gear 333222 and the truss main body move relative to the fixed truss 101, so as to realize the motion control of the truss main body.

At the same time, it should also be pointed out that for the hook assembly 300, it can move on the main body of the truss and can be stretched downwards to realize the hook operation of the object to be hooked. In this embodiment, the hook assembly 300 Can be used to hook round workpieces. Specifically, in the embodiment of the present invention, the hook assembly 300 includes a hook mounting part 310, a hook body 320, a first driving mechanism 330, a second driving mechanism 340 and a third driving mechanism 350. The hook mounting part 310 It is used to install the first driving mechanism 330 and the second driving mechanism 340, wherein the first driving mechanism 330 is used to make the hook body 320 move relative to the main beam 120, and the second driving mechanism 340 is used to make the hook body 320 move relative to the hook The mounting part 310 expands and contracts downwards, and the third driving mechanism 350 is used to make the hook body 320 expand and contract relative to the second driving mechanism 340 . In the embodiment of the present invention, the hook assembly 300 realizes the translational movement relative to the main body of the truss through the first driving mechanism 330, and realizes the up and down two-stage telescopic movement through the second driving mechanism 340 and the third driving mechanism 350, which can increase the lifting stroke range , while reducing the space occupation above the truss. In the embodiment of the present invention, the truss device 10 can realize the automation of the whole transfer process without manual participation.

Further, the first sliding rail structure 230 includes a first linear sliding rail 231 and a first sliding block 232, the first linear sliding rail 231 is in sliding fit with the first sliding block 232, the first linear sliding rail 231 and the first sliding block 232 One of the sliders 232 is connected to the main beam 120 , and the other is connected to the fixed truss 101 .

Optionally, in this embodiment, the main body end beam 110 adopts a box-type end beam structure, and is welded into a box-type structure through steel plates.

Further, the above-mentioned first driving mechanism 330 may include a first driving member 331, a first transmission shaft 332221, a first gear 333222 and a first rack 334223, the first driving member 331 is mounted on the hook mounting part 310, the second A transmission shaft 332221 is in transmission connection with the first driving member 331 , the first gear 333222 is in transmission connection with the first transmission shaft 332221 , the first rack 334223 is engaged with the first gear 333222 , and the first rack 334223 is installed on the main beam 120 .

Optionally, in this embodiment, the first driving mechanism 330 further includes a second slide rail structure 335, and the second slide rail structure 335 includes a second linear slide rail 3351 and a second slider 3352, and the second linear slide rail 3351 Slidingly matched with the second sliding block 3352 , one of the second linear sliding rail 3351 and the second sliding block 3352 is connected to the hook installation part 310 , and the other is connected to the main body beam 120 . The first slide rail structure 230 is used to provide a track for the movement between the hook installation part 310 and the main beam 120 , so as to determine the running track of the hook installation part 310 .

In an optional embodiment, the above-mentioned second driving mechanism 340 includes a driving mounting part 341, a second driving part 342, a lifting reducer 343, a second gear 345 and a second rack 346, and the driving mounting part 341 and the hook The mounting part 310 is slidingly connected, the second driving part 342 is connected with the hook mounting part 310, and is transmitted through the lifting reducer 343 and the second gear 345, and the second rack 346 is installed on the driving mounting part 341, and is connected with the second gear 345 meshes.

Further, in an optional embodiment, the second drive mechanism 340 also includes a third slide rail structure 347, the third slide rail structure 347 includes a third linear slide rail 3471 and a third slide block 3472, the third linear slide The rail 3471 is slidingly matched with the third sliding block 3472 , one of the third linear sliding rail 3471 and the third sliding block 3472 is connected with the hook mounting part 310 , and the other is connected with the driving mounting part 341 .

In this embodiment, the third driving mechanism 350 is an electric cylinder, the electric cylinder is connected to the driving mounting part 341 , and the hook body 320 is connected to the electric cylinder.

Optionally, the driving installation part 341 is a box structure and is provided with a hollow installation space for accommodating the electric cylinder.

In this embodiment, the driving motor of the electric cylinder is a servo motor, and guide rods are provided on both sides of the electric cylinder.

Optionally, in this embodiment, the above-mentioned driving mechanisms are all driven by servo motors, which is conducive to precise control of the transfer position.

Please refer to Fig. 1 to Fig. 11, the truss device 10 suitable for transferring large workpieces provided by this embodiment: the truss body is the main structure of the truss device 10, the truss body includes a main body end beam 110 and a main body beam 120, the main body end The beam 110 is installed on the fixed truss 101 at both ends, and the fixed truss 101 is used to support and provide a moving track for the main body of the truss. The main body driving mechanism 200 is used to move the truss main body relative to the fixed truss 101. The main body driving mechanism 200 includes a transmission shaft 221, a first gear 333222 and a first rack 334223. The transmission shaft 221 can be driven by a motor, and the transmission shaft 221 drives The first gear 333222 rotates, the first gear 333222 meshes with the first rack 334223, and the first rack 334223 is fixed on the fixed truss 101, so that the first gear 333222 and the main body of the truss move relative to the fixed truss 101 to realize the movement of the main body of the truss sport control. The hook assembly 300 can move on the main body of the truss, and can be stretched downward to realize the hook operation of the object to be hooked. In this embodiment, the hook assembly 300 can be used to hook a circular workpiece. Specifically, in the embodiment of the present invention, the hook assembly 300 includes a hook mounting part 310, a hook body 320, a first driving mechanism 330, a second driving mechanism 340 and a third driving mechanism 350. The hook mounting part 310 It is used to install the first driving mechanism 330 and the second driving mechanism 340, wherein the first driving mechanism 330 is used to make the hook body 320 move relative to the main beam 120, and the second driving mechanism 340 is used to make the hook body 320 move relative to the hook The mounting part 310 expands and contracts downwards, and the third driving mechanism 350 is used to make the hook body 320 expand and contract relative to the second driving mechanism 340 . In the embodiment of the present invention, the hook assembly 300 realizes the translational movement relative to the main body of the truss through the first driving mechanism 330, and realizes the up and down two-stage telescopic movement through the second driving mechanism 340 and the third driving mechanism 350, which can increase the lifting stroke range , while reducing the space occupation above the truss. In the embodiment of the present invention, the truss device 10 can realize the automation of the whole transfer process without manual participation.

It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right" etc. are based on the Orientation or positional relationship, or the orientation or positional relationship that is usually placed when the product of the invention is used, or the orientation or positional relationship that is commonly understood by those skilled in the art, is only for the convenience of describing the present invention and simplifying the description, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

It should also be noted that in the description of the present invention, terms such as "setting" and "connection" should be understood in a broad sense unless otherwise specified and limited. For example, "connection" can be a fixed connection or a flexible Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (10)

1. A truss apparatus adapted for transporting large workpieces, comprising a truss body assembly (100), a body drive mechanism (200) and a hook assembly (300);

the truss main body comprises a main body end beam (110) and a main body cross beam (120), and the main body cross beam (120) is connected with the main body end beam (110); the main body driving mechanism (200) comprises a main body driving piece (210), a main body driving transmission piece (220) and a first sliding rail structure (230), wherein the main body driving piece (210) is installed on the main body cross beam (120) and is in transmission connection with the main body driving transmission piece (220), the main body driving transmission piece (220) comprises a transmission shaft (221), a first gear (333) (222) and a first rack (334) (223), the main body driving transmission piece (220) is in transmission connection with the transmission shaft (221), the transmission shaft (221) is in transmission connection with the first gear (333) (222), the first gear (333) (222) is meshed with the first rack (334) (223), the first rack (334) (223) is installed on a fixed truss (101) at two ends, the first sliding rail structure (230) is respectively connected with the main body cross beam (120) and the fixed truss (101), and the main body driving piece (210) is used for enabling the truss main body to slide along the fixed trusses (101) at the two ends;

the hook assembly (300) is slidably mounted on the main body beam (120) and can slide relative to the main body beam (120), the hook assembly (300) comprises a hook mounting piece (310), a hook body (320), a first driving mechanism (330), a second driving mechanism (340) and a third driving mechanism (350), the hook mounting piece (310) is slidably mounted on the main body beam (120), and the first driving mechanism (330) is mounted on the hook mounting piece (310) and can enable the hook mounting piece (310) to move relative to the extending direction of the main body beam (120); the second driving mechanism (340) is mounted on the hook mounting part (310) and can stretch downwards relative to the hook mounting part (310), the third driving mechanism (350) is in transmission connection with the second driving mechanism (340) and can stretch downwards relative to the second driving mechanism (340), and the hook body (320) is mounted on the third driving mechanism (350).

2. The truss arrangement adapted for transporting large workpieces according to claim 1, characterized in that the first drive mechanism (330) comprises a first drive member (331), a first drive shaft (332) (221), a first gear (333) (222) and a first rack (334) (223), the first drive member (331) being mounted on the hook mount (310), the first drive shaft (332) (221) being in driving connection with the first drive member (331), the first gear (333) (222) being in driving connection with the first drive shaft (332) (221), the first rack (334) (223) being in engagement with the first gear (333) (222), and the first rack (334) (223) being mounted on the body cross beam (120).

3. The truss arrangement adapted for transporting large workpieces according to claim 2, wherein the first drive mechanism (330) further comprises a second slide rail structure (335), the second slide rail structure (335) comprising a second linear slide rail (3351) and a second slider (3352), the second linear slide rail (3351) being in sliding engagement with the second slider (3352), one of the second linear slide rail (3351) and the second slider (3352) being connected with the hook mount (310), the other being connected with the body rail (120).

4. A truss arrangement suitable for transporting large workpieces according to claim 2 or 3, characterised in that the second drive mechanism (340) comprises a drive mount (341), a second drive member (342), a lifting gear (343), a second gear (345) and a second rack (346), the drive mount (341) being in sliding connection with the hook mount (310), the second drive member (342) being connected with the hook mount (310) and being in transmission with the second gear (345) via the lifting gear (343), the second rack (346) being mounted on the drive mount (341) and being in engagement with the second gear (345).

5. The truss arrangement adapted for transporting large workpieces according to claim 4, characterized in that the second drive mechanism (340) comprises a third slide rail structure (347), the third slide rail structure (347) comprising a third linear slide rail (3471) and a third slider (3472), the third linear slide rail (3471) being in sliding engagement with the third slider (3472), one of the third linear slide rail (3471) and the third slider (3472) being connected with the hook mount (310) and the other being connected with the drive mount (341).

6. Truss arrangement suitable for transporting large work pieces according to claim 4, characterized in that the third drive mechanism (350) is an electric cylinder connected with the drive mount (341), with which the hook body (320) is connected.

7. Truss arrangement suitable for transporting large work pieces according to claim 6, characterized in that the drive mounting (341) is of box construction and is provided with a hollow mounting space for receiving the electric cylinder.

8. The truss apparatus adapted for transporting a large-sized workpiece according to claim 6, wherein the driving motor of the electric cylinder is a servo motor, and guide bars are provided at both sides of the electric cylinder.

9. Truss arrangement suitable for transporting large workpieces according to claim 1, characterized in that the first slide rail structure (230) comprises a first linear slide rail (231) and a first slider (232), the first linear slide rail (231) being in sliding fit with the first slider (232), one of the first linear slide rail (231) and the first slider (232) being connected with the main body cross beam (120), the other being connected with the fixed truss (101).

10. Truss arrangement suitable for transporting large work pieces according to claim 1, characterized in that the main body end beams (110) are box end beam structures and welded by steel plates into box structures.

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