Skeletonless tower crane cab and tower crane using the same

Abstract

The driver cabin of the tower crane without framework structure comprises a chassis, side plates, a front plate, a rear plate and a top plate; the side plates are stacked by inner side plates and outer side plates and have hollow cross-section structures inside; the front plate comprises a plurality of beam type plates which are distributed in longitudinal direction at intervals; the beam type plates are stacked by inner beam plates and outer beam plates and have hollow cross-section structures inside; the rear plate comprises a wall plate and a door plate which can be opened and closed relative to the wall plate; the wall plate is stacked by a rear inner plate and a rear outer plate and has a hollow cross-section structure inside, and the top end, the bottom end, the left end and the right end of the wall plate are all double plate structures stacked and welded by the rear inner plate and the rear outer plate; the top plate comprises an outer top plate and a beam type inner top plate which are stacked and welded with each other and have a hollow cross-section structure inside. The driver cabin of the tower crane without framework structure realizes lightweight design and has the advantage of low manufacturing cost. Correspondingly, the application also provides a tower crane with the driver cabin without framework.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to a frameless tower crane operator's cab and a tower crane using the same operator's cab. Background Technology

[0002] Traditional tower crane operator cabs are typically constructed by using profiles as the internal frame, with sealing plates welded onto the inside and outside of the frame. Due to the extensive use of profiles, the cabs are not only heavy, contradicting the concept of lightweight construction, but also result in high manufacturing costs.

[0003] Excessive weight of the tower crane operator's cab will have the following adverse effects: (1) Reduced overturning margin: The operator's cab is part of the upper dead load. Increased weight will directly raise the center of gravity of the whole machine, reduce the stability safety margin, and significantly increase the risk of overturning; (2) Occupy the rated lifting capacity: The extra weight will "eat up" part of the rated lifting capacity, resulting in a decrease in effective lifting capacity, which is easy to trigger the torque limiter alarm and affect the work efficiency; (3) Increased dynamic load impact: Increased dead load will amplify the inertial load during slewing and luffing start-up and braking, which will have a more significant impact on the tower body, slewing bearing, and connecting bolts. In the long term, it is easy to cause fatigue cracks and loose bolts. In extreme cases, it may lead to tower collapse.

[0004] Therefore, it is necessary to design the tower crane operator's cab to be lightweight, reduce weight, reduce material usage, and lower costs. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this application provides a frameless tower crane operator's cab. This frameless tower crane operator's cab abandons the traditional frame structure. Based on a base frame, it is constructed using side plates, front plates, rear plates, and top plates with specific structural designs and assembly relationships. While meeting standard requirements for strength and rigidity, its weight is significantly reduced, achieving lightweight design. Furthermore, its specific construction gives it the advantage of low manufacturing cost and ease of manufacture. Correspondingly, this invention also provides a tower crane employing a frameless operator's cab, which has a larger overturning margin and rated lifting capacity, as well as lower dynamic load impact.

[0006] For the driver's cab, the technical solution of this application is as follows:

[0007] The frameless tower crane operator's cab includes a base frame, side plates, a front plate, a rear plate, and a top plate. The side plates include a left side plate and a right side plate respectively located on both sides of the base frame. Each side plate is formed by stacking inner and outer side plates, and has a hollow cross-section structure inside. The inner side plate has an inwardly facing A-flanged edge along its circumferential edge, and the outer side plate has an inwardly facing B-flanged edge along its circumferential edge. The front, rear, and top parts of the A-flanged edge overlap and are welded to corresponding parts of the B-flanged edge. The bottom of the A-flanged edge and the bottom of the B-flanged edge are spaced apart to form a U-shaped groove structure, which is fitted and welded to the base frame. The front plate includes multiple beam-shaped plates spaced longitudinally. Each beam-shaped plate is formed by stacking inner and outer beam plates, and has a hollow cross-section structure inside. The structure has a hollow cross-section, with its upper and lower edges being double-layered plates consisting of inner and outer beams stacked and welded together. The two ends of the beam-shaped plate are respectively joined and welded to the left and right side plates. The rear plate includes a wall panel and a door panel that can open and close relative to the wall panel. The wall panel is composed of a rear inner plate and a rear outer plate stacked together, and has a hollow cross-section structure inside. Its top, bottom, left, and right ends are all double-layered plates consisting of rear inner and rear outer plates stacked and welded together. The two sides of the wall panel are respectively stacked and welded to the B-flanges on the left and right side plates. The top plate includes an outer top plate and a beam-shaped inner top plate stacked and welded together, and has a hollow cross-section structure inside. The outer top plate is fixed by welding to cover the top of the tower crane operator's cab.

[0008] Compared with the prior art, the frameless tower crane operator's cab of the present invention is composed of a base frame, side plates, a front plate, a rear plate, and a top plate. The side plates, front plate, rear plate, and top plate are all double-layered structures composed of inner and outer plates, and have a hollow cross-section structure, resulting in high bending strength. Based on the base frame, the side plates, front plate, rear plate, and top plate are assembled in a specific manner and welded together to form a whole. This ensures that the strength and rigidity of the tower crane operator's cab meet standard requirements, and the weight is significantly reduced compared to the prior art, achieving lightweighting and reducing material usage, thus lowering costs. Furthermore, the specific structure of the frameless tower crane operator's cab of the present invention also provides the advantage of ease of manufacturing. During production, the inner and outer plates of the side plates, front plate, rear plate, and top plate are first stamped, and then welded according to a set process. Moreover, the installation structure that meets the installation requirements of the interior parts can be formed on the inner plate by stamping, which is beneficial to improving production efficiency.

[0009] As an optimization, in the aforementioned frameless tower crane operator's cab, the left and right sides and rear edge of the outer top plate have downward-facing C-shaped flanges, which are welded to the left side plate, right side plate, and wall panel; the front end of the outer top plate extends relative to the front plate. This edge structure design of the outer top plate prevents rainwater from entering the operator's cab, significantly improving its rainproof capability. Furthermore, the welding of the C-shaped flanges to the left side plate, right side plate, and wall panel enhances the overall strength and rigidity of the operator's cab.

[0010] As an optimization, in the aforementioned frameless tower crane operator's cab, the two ends of the beam-shaped inner top plate are welded to the lower surfaces of the A-flanged flanges on the two side plates, respectively; the two ends of the beam-shaped inner top plate have downward bending structures, which are welded to the side plates. Therefore, the connection strength between the beam-shaped inner top plate and the left and right side plates is high, while simultaneously enhancing the overall structural integrity of the operator's cab and further improving its overall rigidity.

[0011] As an optimized solution, in the aforementioned frameless tower crane operator's cab, the middle main body of the beam-shaped inner top plate is higher than its two ends, and the middle main body abuts and is welded to the outer top plate; the beam-shaped inner top plate has structural grooves, so that the combination formed by the beam-shaped inner top plate and the outer top plate has a hollow cross-section structure inside. Thus, the beam-shaped inner top plate and the outer top plate form an integral structure, and the combination formed by the two has a hollow cross-section structure inside, with high bending and torsional stiffness, and the beam-shaped inner top plate is easy to form, which is conducive to industrial production.

[0012] As an optimization, in the aforementioned frameless tower crane operator's cab, the top and bottom ends of the wall panels have inward-facing D-flanges and E-flanges, respectively. The two ends of the D-flanges are welded to the B-flanges at the top of the left and right side panels, respectively, and the E-flanges are welded to the base frame. The D-flanges and E-flanges improve the connection strength between the rear panel and the left, right, and base frames, while also facilitating positioning during assembly, ensuring precise fit of related components, and reducing manufacturing difficulty.

[0013] As an optimized solution, in the aforementioned frameless tower crane operator's cab, the inner side plate is composed of a front inner side plate and a rear inner side plate, and correspondingly, the outer side plate is composed of a front outer side plate and a rear outer side plate. The front inner side plate and the front outer side plate form the front plate, and the rear inner side plate and the rear outer side plate form the rear plate. The corresponding connecting edges of the front outer side plate, the rear outer side plate, the front inner side plate, and the rear inner side plate are sequentially stacked and welded. The side plate consists of two parts, front and rear, significantly reducing the size of individual stamped parts and substantially lowering the cost of stamping dies, which is beneficial for cost control. Furthermore, it avoids the problem of reduced bending and torsional stiffness caused by excessively large single sheet metal dimensions.

[0014] As an optimization, in the aforementioned frameless tower crane operator's cab, the front plate has a through-hole structure. The edge of the through-hole structure is a double-layer plate structure formed by overlapping and welding the inner front plate and the outer front plate. The through-hole structure (used for installing glass) can increase the operator's field of vision, reduce blind spots, and improve safety and comfort. At the same time, the double-layer plate structure formed by overlapping and welding the inner front plate and the outer front plate provides high strength and allows for a smaller internal hollow cross-section structure, avoiding an excessively large hollow cross-section structure area that would reduce bending and torsional stiffness.

[0015] As an optimization, in the aforementioned frameless tower crane operator's cab, the front end of the side plate has a socket for connecting to the beam-shaped plate, and correspondingly, the end of the beam-shaped plate has a socket. The socket is inserted into the socket and welded. The use of sockets and sockets not only reduces assembly difficulty but also improves the connection strength between the side plate and the front plate.

[0016] As an optimized solution, the aforementioned method for manufacturing the frameless tower crane operator's cab includes the following steps:

[0017] S1. Prepare the base frame, side panels, front panel, wall panel, door panel, and the outer top panel and beam-shaped inner top panel of the top plate for later use; the base frame is formed by welding steel profiles; the side panels, front panel, wall panel, and door panel are first made by stamping the corresponding inner and outer panel blanks, then punched according to the design contour to obtain the inner and outer panels, and then the inner and outer panels are stacked and welded; the outer top panel and beam-shaped inner top panel of the top plate are first made by stamping the corresponding blanks, and then punched according to the design contour.

[0018] S2, fix the base frame, side panels, front panel, wall panel and outer top panel respectively with positioning fixtures; after the positioning fixtures are fixed, the side panels, front panel, wall panel and outer top panel are located outside their assembly positions and can be pushed to the assembly position by translation;

[0019] S3, using positioning fixtures to push the front plate to the assembly position;

[0020] S4. Using positioning fixtures, the side plate is pushed to the assembly position so that the U-shaped groove structure at the bottom of the plate mates with the base frame, and the front end of the plate is inserted into the socket at the end of the beam plate and welded to fix it.

[0021] S5, using positioning fixtures to push the wall panel to abut against the rear end of the side panel and weld it in place;

[0022] S6, using positioning fixtures to push the outer top plate to abut against the top of the assembly formed by the side plate, front plate and wall plate, and weld it in place;

[0023] S7. Place the beam-shaped inner top plate in its assembly position and weld it in place;

[0024] S8, install the door panel onto the wall panel.

[0025] The frameless tower crane operator's cab of the present invention is manufactured using the above-mentioned process steps. The side plates, front plates, rear plates, and top plates are first made into corresponding inner and outer plates using a stamping process. Then, the inner and outer plates are stacked and welded to obtain the side plates, front plates, wall plates, and door plates. During the assembly stage, the side plates, front plates, wall plates, and outer top plates are positioned using positioning fixtures and pushed to the assembly position according to the set process before being welded and fixed. Then, the beam-shaped inner top plate is welded and fixed, and the door plates are installed. It has the advantages of low implementation difficulty and high production efficiency.

[0026] For cranes, the technical solution of this application is as follows:

[0027] A tower crane, including a driver's cab; the driver's cab is the frameless tower crane driver's cab of the present invention.

[0028] Compared with the prior art, the tower crane of this application adopts a frameless tower crane operator's cab. While the structural strength and stiffness meet the standard requirements, the dead load is significantly reduced, thus having a larger overturning margin and rated lifting capacity, as well as a smaller dynamic load impact. Attached Figure Description

[0029] Figure 1 This is an exploded view of the frameless tower crane operator's cab in an embodiment of the present invention;

[0030] Figure 2 This is a structural schematic diagram (rear view) of the frameless tower crane operator's cab in an embodiment of the present invention.

[0031] Figure 3 This is a structural schematic diagram (front view) of the frameless tower crane operator's cab in an embodiment of the present invention.

[0032] Figure 4 This is a structural schematic diagram of the side plate (left side plate) in an embodiment of the present invention;

[0033] Figure 5 This is an exploded view of the side plate (right side plate) in an embodiment of the present invention.

[0034] Figure 6 This is a schematic diagram of the front panel located at the top in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the front panel located in the middle of an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the front plate located at the bottom in an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the rear plate in an embodiment of the present invention;

[0038] Figure 10 This is an exploded view of the rear wall panel in an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the top plate structure in an embodiment of the present invention (top view).

[0040] Figure 12 This is a schematic diagram of the top plate structure in an embodiment of the present invention (view from below).

[0041] Figure 13 This is an exploded view of the top plate in an embodiment of the present invention;

[0042] Figure 14 This is a structural diagram of the operator's cab of an existing tower crane;

[0043] Figure 15 This is a structural diagram of the existing tower crane operator's cab frame.

[0044] The attached diagram is labeled as follows: 1-Base frame; 2-Side plate, 2a-Front plate, 2b-Rear plate, 21-Inner side plate, 211-Front inner side plate, 212-Rear inner side plate, 22-Outer side plate, 221-Front outer side plate, 222-Rear outer side plate, 23-A-Flanged flange, 24-B-Flanged flange, 25-Socket; 3-Front plate, 31-Inner beam plate, 32-Outer beam plate, 33-Socket; 4-Rear plate, 41-Wall panel, 411-Rear inner plate, 412-Rear outer plate, 413-D-Flanged flange, 414-E-Flanged flange, 42-Door panel; 5-Top plate, 51-Outer top plate, 52-Beam-type inner top plate, 53-C-Flanged flange, 54-Bending structure, 55-Structural groove; 6-Frame; 7-Inner sealing plate; 8-Outer sealing plate. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention. In the following embodiments, content not described in detail or shown in detail in the drawings is common knowledge in the art.

[0046] See Figure 14 and Figure 15 The existing tower crane operator's cab consists of a frame 6 and inner sealing plates 7 and outer sealing plates 8 welded to the inner and outer sides of the frame 6. The frame 6 is welded from profiles, which not only results in a large weight for the operator's cab, but also in high cost due to the large amount of materials used.

[0047] The frameless tower crane operator's cab of the present invention does not have a traditional frame structure, which significantly reduces its weight, uses less material, and has a lower cost.

[0048] Embodiments of the present invention (see) Figures 1-13 ):

[0049] In this embodiment, the frameless tower crane operator's cab includes a base frame 1, side plates 2, front plate 3, rear plate 4, and top plate 5; the base frame 1 serves as the foundation of the operator's cab, the side plates 2, front plate 3, and rear plate 4 are respectively located around the operator's cab, and the top plate 5 covers the top of the operator's cab.

[0050] In this embodiment, the side plate 2 includes a left side plate and a right side plate respectively disposed on both sides of the base frame 1; the side plate 2 is formed by stacking an inner side plate 21 and an outer side plate 22, and has a hollow cross-section structure inside; the circumferential edge of the inner side plate 21 has an inwardly facing A flange 23, and the circumferential edge of the outer side plate 22 has an inwardly facing B flange 24; the front, rear and top parts of the A flange 23 are overlapped and welded with the corresponding parts of the B flange 24; the bottom of the A flange 23 and the bottom of the B flange 24 are spaced to form a U-shaped groove structure (see...). Figure 4 The U-shaped groove structure is fitted and welded to the base frame 1, thereby enabling a stable fixed connection between the left and right side plates and the base frame. Specifically, the inner side plate 21 is composed of a front inner side plate 211 and a rear inner side plate 212, and correspondingly, the outer side plate 22 is composed of a front outer side plate 221 and a rear outer side plate 222. The front inner side plate 211 and the front outer side plate 221 form the front plate 2a, and the rear inner side plate 212 and the rear outer side plate 222 form the rear plate 2b. The corresponding connecting edges of the front outer side plate 221, the rear outer side plate 222, the front inner side plate 211, and the rear inner side plate 212 are sequentially stacked and welded. During production, the front inner side plate 211, rear inner side plate 212, front outer side plate 221, and rear outer side plate 222 are first stamped and then welded into an integral structure. The connection between the front plate 2a and the rear plate 2b is a four-layer interlocking plate structure composed of the front outer side plate 221, rear outer side plate 222, front inner side plate 211, and rear inner side plate 212. This structure offers high connection and structural strength while minimizing the size of the hollow cross-section within the side plate 2, preventing an excessively large hollow cross-section area that could reduce bending and torsional stiffness. Furthermore, the smaller size of each stamped sheet significantly reduces mold costs. The front plate 2a has a through-hole structure, the edges of which are formed by overlapping and welding the front inner side plate 211 and the front outer side plate 221 into a double-layer plate structure. In use, glass is installed in the through-hole to form a window, allowing the driver to observe the external environment with good visibility.

[0051] In this embodiment, the front panel 3 comprises three longitudinally spaced beam-shaped panels (one each at the top, middle, and bottom of the driver's cab). Each beam-shaped panel is formed by stacking inner beam panels 31 and outer beam panels 32, and has a hollow cross-section structure. Its upper and lower edges are double-layered structures formed by stacking and welding inner beam panels 31 and outer beam panels 32. The two ends of each beam-shaped panel are respectively joined and welded to the left and right side panels. The three beam-shaped panels provide reliable support for the left and right side panels and ensure a wide field of vision in front of the driver's cab. Specifically, the front end of the side panel 2 has a socket 25 for connecting the beam-shaped panels, and correspondingly, the end of the beam-shaped panel has a socket 33. The socket 25 is inserted into the socket 33 and welded. Through the cooperation of the socket 25 and the socket 33, the connection strength between the side panel 2 and the beam-shaped panels is high.

[0052] In this embodiment, the rear panel 4 includes a wall panel 41 and a door panel 42 that can be opened and closed relative to the wall panel 41 (the door panel 42 allows personnel to enter and exit the driver's cab); the wall panel 41 is formed by stacking an inner rear panel 411 and an outer rear panel 412, and has a hollow cross-section structure inside. Its top, bottom, left, and right ends are all double-layered plate structures formed by stacking and welding the inner rear panel 411 and the outer rear panel 412; the two side edges of the wall panel 41 are stacked and welded to the B-flanged flange 24 on the left and right side panels, respectively. The edge of the wall panel 41 itself is a double-layered plate structure, and with the double-layered plate structure formed by the B-flanged flange 24 and the A-flanged flange 23, the connection between the wall panel 41 and the side panel 2 is actually a four-layered plate structure welded as a whole, with high structural strength. Specifically, the top and bottom ends of the wall panel 41 have inwardly facing D-flanges 413 and E-flanges 414, respectively. The two ends of the D-flanges 413 are respectively fastened and welded to the B-flanges 24 at the top of the left and right side panels, and the E-flanges 414 are respectively fastened and welded to the base frame 1. Thus, during assembly, it is only necessary to fasten the two ends of the D-flanges 413 to the B-flanges 24 at the top of the left and right side panels, and fasten the E-flanges 414 to the base frame 1 to achieve precise positioning, and then weld. This effectively reduces the manufacturing difficulty, and the increased number of welded edges improves the structural strength.

[0053] In this embodiment, the top plate 5 includes an outer top plate 51 and a beam-shaped inner top plate 52 that are stacked and welded together, both having a hollow cross-section structure. The outer top plate 51 is fixed by welding to cover the top of the tower crane operator's cab. The assembly formed by the outer top plate 51 and the beam-shaped inner top plate 52 has a hollow cross-section structure, providing strong resistance to bending and torsion. The left, right, and rear edges of the outer top plate 51 have downward-facing C-shaped flanges 53, which are welded to the left side plate, right side plate, and wall panel 41. The front end of the outer top plate 51 extends relative to the front plate 3. The edge structure design of the outer top plate 51 provides strong rain protection for the operator's cab and improves the overall integrity and structural strength of the cab top. The two ends of the beam-shaped inner top plate 52 are welded to the lower surfaces of the A-shaped flanges 23 on the two side plates 2, respectively. The two ends of the beam-shaped inner top plate 52 have downward-facing bending structures 54, which are welded to the side plates 2. At this point, the beam-shaped inner top plate 52 can support the left and right side plates, and the connection strength with the left and right side plates is high. Specifically, the middle main body of the beam-shaped inner top plate 52 is higher than its two ends, and the middle main body abuts and is welded to the outer top plate 51; the beam-shaped inner top plate 52 has a structural groove 55, so that the combination formed by the beam-shaped inner top plate 52 and the outer top plate 51 has a hollow cross-section structure. The beam-shaped inner top plate 52 adopts a design where the middle main body is higher than the two ends, so that the middle main body can contact and weld with the outer top plate 51.

[0054] In this embodiment, the method for manufacturing a frameless driver's cab includes the following steps:

[0055] S1. Prepare the base frame 1, side plate 2, front plate 3, wall plate 41, door plate 42, and the outer top plate 51 and beam-shaped inner top plate 52 of the top plate 5 for later use; the base frame 1 is formed by welding steel profiles; the side plate 2, front plate 3, wall plate 41 and door plate 42 are first made by stamping the corresponding inner and outer plate blanks, then punched according to the design contour to obtain the inner and outer plates, and then the inner and outer plates are stacked and welded; the outer top plate 51 and beam-shaped inner top plate 52 of the top plate 5 are first made by stamping the corresponding blanks, and then punched according to the design contour.

[0056] S2, fix the base frame 1, side plate 2, front plate 3, wall plate 41, and outer top plate 51 respectively using positioning fixtures; after fixing with positioning fixtures, the side plate 2, front plate 3, wall plate 41, and outer top plate 51 are located outside their respective assembly positions and can be pushed to the assembly position by translation (see the state after fixing with positioning fixtures). Figure 1 );

[0057] S3, using positioning fixtures to push the front plate 3 to the assembly position;

[0058] S4, using positioning fixtures to push side plate 2 to assembly position, so that the U-shaped groove structure at its bottom mates with base frame 1, and the front end insertion port 25 is inserted into the socket 33 at the end of beam plate and welded to fix it;

[0059] S5, using the positioning fixture, push the wall panel 41 to abut against the rear end of the side panel 2 and weld it in place;

[0060] S6, using a positioning fixture, the outer top plate 51 is pushed to abut against the top of the assembly formed by the side plate 2, the front plate 3 and the wall plate 41, and then welded and fixed.

[0061] S7, place the beam-shaped inner top plate 52 in its assembly position and weld it in place;

[0062] S8, install the door panel 42 onto the wall panel 41.

[0063] For the base frame 1, the positioning fixture only needs to be able to clamp and fix the base frame 1. However, for the side plates 2, front plates 3, wall plates 41, and outer top plates 51, it is necessary not only to be able to clamp and fix the corresponding plates, but also to be able to push the plates to move horizontally. When implementing this invention, the positioning fixture is set with a specific structure according to actual needs. The clamping mechanism and the pushing mechanism can be automatic or manual, depending on the actual conditions. Of course, when implementing this invention, if it is for small-batch production, a dedicated positioning fixture may not be required, and assembly may be completed manually.

[0064] The tower crane of this invention adopts a frameless tower crane operator's cab. The structural strength and rigidity of the operator's cab meet the requirements of GB / T 20303.3-2016 "Crane Operator's Cab and Control Station Part 3: Tower Cranes". At the same time, the dead load is significantly reduced, thus providing a larger overturning margin and rated lifting capacity, as well as less dynamic load impact.

[0065] It should be noted that in this invention, the orientation description is determined according to the driver's working state, with the side panel 2 located on both sides of the driver, the front panel 3 located in front of the driver, and the rear panel 4 located behind the driver.

[0066] In implementing this invention, resistance welding is preferred as the welding process, resulting in high connection strength and a smooth surface after welding.

[0067] In this invention, "overlapping" refers to two parts being stacked together and attached, while outside the overlapping area, there is a gap between the two parts because they are not attached, thus forming a hollow cross-section structure.

[0068] The foregoing general description of the invention and its specific embodiments should not be construed as a limitation on the technical solution of the invention. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the invention, to form other technical solutions within the scope of protection of this application.

Claims

1. A frameless tower crane operator's cab, characterized in that: It includes a base frame (1), side panels (2), front panel (3), rear panel (4) and top panel (5); The side plate (2) includes a left side plate and a right side plate respectively disposed on both sides of the base frame (1); the side plate (2) is formed by stacking an inner side plate (21) and an outer side plate (22), and has a hollow cross-section structure inside; the circumferential edge of the inner side plate (21) has an inward A flange (23), and the circumferential edge of the outer side plate (22) has an inward B flange (24). The front, rear and top parts of the A flange (23) are overlapped and welded with the corresponding parts of the B flange (24). The bottom of the A flange (23) and the bottom of the B flange (24) have a gap to form a U-shaped groove structure. The U-shaped groove structure is fitted and welded to the base frame (1). The front plate (3) includes multiple beam-shaped plates spaced apart in the longitudinal direction; the beam-shaped plate is formed by stacking an inner beam plate (31) and an outer beam plate (32), and has a hollow cross-section structure inside. Its upper and lower edges are double-layer plate structures formed by stacking and welding the inner beam plate (31) and the outer beam plate (32); the two ends of the beam-shaped plate are respectively joined and welded to the left side plate and the right side plate; The rear panel (4) includes a wall panel (41) and a door panel (42) that can be opened and closed relative to the wall panel (41); the wall panel (41) is formed by stacking a rear inner panel (411) and a rear outer panel (412), and has a hollow cross-section structure inside. Its top, bottom, left, and right ends are all double-layer plate structures formed by stacking and welding the rear inner panel (411) and the rear outer panel (412); the two sides of the wall panel (41) are stacked and welded with the B flange (24) on the left side panel and the right side panel, respectively. The top plate (5) includes an outer top plate (51) stacked and welded together and a beam-shaped inner top plate (52), which has a hollow cross-section structure inside; the outer top plate (51) is fixed by welding to cover the top of the tower crane operator's cab.

2. The frameless tower crane operator's cab according to claim 1, characterized in that: The outer top plate (51) has downward C-flanges (53) on its left and right sides and rear edge, and the C-flanges (53) are welded to the left side plate, the right side plate and the wall plate (41); the front end of the outer top plate (51) extends relative to the front plate (3).

3. The frameless tower crane operator's cab according to claim 2, characterized in that: The two ends of the beam-shaped inner top plate (52) are respectively welded to the lower surface of the A flange (23) on the two side plates (2); the two ends of the beam-shaped inner top plate (52) have downward bending structures (54), and the bending structures (54) are welded to the side plates (2).

4. The frameless tower crane operator's cab according to claim 3, characterized in that: The middle main body of the beam-shaped inner top plate (52) is higher than its two ends, and the middle main body abuts against and is welded to the outer top plate (51); the beam-shaped inner top plate (52) has a structural groove (55), so that the combination formed by the beam-shaped inner top plate (52) and the outer top plate (51) has a hollow cross-section structure inside.

5. The frameless tower crane operator's cab according to claim 1, characterized in that: The top and bottom of the wall panel (41) have inward D flange (413) and E flange (414) respectively. The two ends of the D flange (413) are fastened and welded to the B flange (24) at the top of the left side panel and the right side panel respectively. The E flange (414) is fastened and welded to the base frame (1).

6. The frameless tower crane operator's cab according to claim 1, characterized in that: The inner side plate (21) is composed of a front inner side plate (211) and a rear inner side plate (212). Correspondingly, the outer side plate (22) is composed of a front outer side plate (221) and a rear outer side plate (222). The front inner side plate (211) and the front outer side plate (221) form the front plate (2a), and the rear inner side plate (212) and the rear outer side plate (222) form the rear plate (2b). The corresponding connecting edges of the front outer side plate (221), the rear outer side plate (222), the front inner side plate (211), and the rear inner side plate (212) are stacked and welded in sequence.

7. The frameless tower crane operator's cab according to claim 6, characterized in that: The front plate (2a) has a through hole structure, the edge of which is a double-layer plate structure formed by overlapping and welding the front inner plate (211) and the front outer plate (221).

8. The frameless tower crane operator's cab according to any one of claims 1-7, characterized in that: The front end of the side plate (2) has a socket (25) for connecting the beam plate. Correspondingly, the end of the beam plate has a socket (33). The socket (25) is inserted into the socket (33) and welded.

9. The frameless tower crane operator's cab according to claim 8, characterized in that: The manufacturing method includes the following steps: S1, prepare the base frame (1), side plate (2), front plate (3), wall plate (41), door plate (42), and the outer top plate (51) and beam-shaped inner top plate (52) of the top plate (5) respectively for later use; the base frame (1) is formed by welding steel profiles; the side plate (2), front plate (3), wall plate (41) and door plate (42) are first made by stamping forming process to obtain the corresponding inner and outer plate blanks, and then the inner and outer plates are punched according to the design contour, and then the inner and outer plates are stacked and welded; the outer top plate (51) and beam-shaped inner top plate (52) of the top plate (5) are first made by stamping forming process to obtain the corresponding blanks, and then the inner and outer plates are punched according to the design contour. S2, fix the base frame (1), side plate (2), front plate (3), wall plate (41) and outer top plate (51) respectively with positioning fixtures; after fixing with positioning fixtures, the side plate (2), front plate (3), wall plate (41) and outer top plate (51) are located outside their assembly positions respectively, and can be pushed to the assembly position by translation; S3, using positioning fixtures to push the front plate (3) to the assembly position; S4, using positioning fixtures to push the side plate (2) to the assembly position, so that the U-shaped groove structure at its bottom matches the base frame (1), and the front end of the socket (25) is inserted into the socket (33) at the end of the beam plate and welded to fix it; S5, using positioning fixtures to push the wall panel (41) to abut against the rear end of the side panel (2) and weld it in place; S6, using a positioning fixture, the outer top plate (51) is pushed to abut against the top of the assembly formed by the side plate (2), front plate (3) and wall plate (41), and then welded and fixed. S7, place the beam-shaped inner top plate (52) in its assembly position and weld it in place; S8, install the door panel (42) onto the wall panel (41).

10. A tower crane, including a driver's cab; characterized in that: The driver's cab is a frameless tower crane driver's cab as described in any one of claims 1-9.

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