Manipulation chamber preloading assistance system and engineering machine production line

Abstract

The present application belongs to the field of engineering machinery production, and discloses a kind of operating chamber preloading auxiliary system and engineering machinery production line, operating chamber preloading auxiliary system includes: hoisting mechanism, including for suspending operating chamber's lifting appliance, connecting in the top of lifting appliance's lifting mechanism and for driving lifting mechanism translation translation mechanism;And protection mechanism, including high structure and movably set on the protection support and support displacement mechanism of high structure, the bottom of protection support is equipped with support platform part, support displacement mechanism can drive protection support between high structure and lifting mechanism displacement;In the state where protection support displaces to lifting mechanism, protection support and lifting mechanism form fixed connection along vertical direction to be able to synchronous lifting, and support platform part is located below operating chamber.The present application can suspend operating chamber in the air when assisting operating chamber bottom preloading, set up anti-falling structure, can reduce preloading process difficulty, ensure safety, improve work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering machinery production, in particular to a kind of operating cab preloading auxiliary system and engineering machinery production line. BACKGROUND

[0002] In the existing operating cab bottom preloading process, operating cab needs to be hoisted to ground support tooling by artificial crane operation, then operating personnel enters the inside of support tooling to carry out operating cab bottom preloading. But to make operating cab can be placed stably on support tooling, it depends on the experience and level of crane operator, overall, it is difficult to operate, long time is occupied, which is not conducive to improve work efficiency. SUMMARY

[0003] In view of at least one of the above defects or deficiencies of the prior art, the present application provides an operating cab preloading auxiliary system and engineering machinery production line, which can suspend operating cab in the air when assisting operating cab bottom preloading, set up anti-falling structure, without consuming time and effort to support and position operating cab before preloading, to realize the purposes of reducing preloading process difficulty, saving ground space, ensuring safety and improving work efficiency, etc.

[0004] To achieve the above purposes, the first aspect of the present application provides an operating cab preloading auxiliary system, which comprises:

[0005] Hoisting mechanism, comprising a lifting appliance for suspending operating cab, a lifting mechanism connected to the top of the lifting appliance, and a translation mechanism for driving the lifting mechanism to translate; and

[0006] Protective mechanism, comprising an elevated structure, a protective support movably arranged on the elevated structure and a support displacement mechanism, the bottom of the protective support is provided with a support platform portion, and the support displacement mechanism can drive the protective support to displace between the elevated structure and the lifting mechanism;

[0007] In the state that the protective support is displaced to the lifting mechanism, the protective support and the lifting mechanism form a fixed connection along the vertical direction to be able to be lifted synchronously, and the support platform portion is located below the operating cab.

[0008] Optionally, the elevated structure comprises two first support cross beams arranged in parallel and spaced apart in the transverse direction, the lifting mechanism comprises a liftable movable plate arranged in the transverse direction, the top of the lifting appliance is fixedly connected to the liftable movable plate, the protective support comprises two support units, the top of each support unit is formed with a support suspension portion extending in the transverse direction, and the bottom of each support unit is formed with the support platform portion.

[0009] Under the cooperative driving of the lifting mechanism and the translation mechanism, the liftable movable plate can be end butted and top leveled with the two first support cross beams, and under the driving of the support displacement mechanism, the support hanging part can move along the end butted liftable movable plate and the first support cross beam to be hung on the liftable movable plate or the corresponding first support cross beam.

[0010] Optionally, the top surface of each first support cross beam is formed with a first cross beam sliding groove, the top surface of the liftable movable plate is formed with two movable plate sliding grooves arranged in parallel and at intervals, and each support hanging part is formed with a hanging part sliding strip.

[0011] In the state that the liftable movable plate is end butted and top leveled with the two first support cross beams, the two movable plate sliding grooves are respectively end butted with the two first cross beam sliding grooves, and the hanging part sliding strip can slide in the butted sliding groove formed by the end butted movable plate sliding groove and the first cross beam sliding groove.

[0012] Optionally, the hanging part sliding strip and the butted sliding groove form a mortise and tenon type sliding fit, the hanging part sliding strip is formed as a hanging part tenon, and the butted sliding groove is formed as a butted mortise.

[0013] Optionally, the support displacement mechanism comprises a linear telescopic device arranged along the length direction of the first support cross beam, and in the state that the liftable movable plate is end butted and top leveled with the two first support cross beams, the support hanging part can be driven to move along the end butted liftable movable plate and the first support cross beam through the telescopic action of the linear telescopic device.

[0014] Optionally, the linear telescopic device comprises a cylinder part and a telescopic rod telescopically and movably inserted into the cylinder part, two clamping pushers arranged at intervals along the length direction of the telescopic rod are connected to the telescopic rod, and the support hanging part is located between the two clamping pushers.

[0015] Optionally, the elevated structure comprises two second support cross beams arranged in parallel and at intervals along the vertical direction and respectively corresponding to the two first support cross beams, the telescopic rod is arranged above the second support cross beam, the second support cross beam is formed with a second cross beam sliding groove, the second cross beam sliding groove extends along the length direction of the second support cross beam and is arranged through the second support cross beam along the vertical direction, and the two clamping pushers on the telescopic rod are both arranged through the second cross beam sliding groove along the vertical direction and both form a sliding fit with the second cross beam sliding groove.

[0016] Optionally, the protective support comprises a vertical protective plate, and the support hanging part and the support platform part are connected to the upper and lower ends of the vertical protective plate.

[0017] Optionally, the lifting mechanism comprises a translatable movable plate, the liftable movable plate and a scissor folding mechanism, the translatable movable plate is connected with the translation mechanism, the translatable movable plate is arranged in parallel and spaced apart from the liftable movable plate and is connected through the scissor folding mechanism.

[0018] Optionally, two ends of the first support cross beam are formed into a first cross beam butt joint end and a first cross beam limiting end, the first cross beam limiting end is connected with a limiting structure capable of preventing the support unit from moving out of the first support cross beam;

[0019] Under the cooperative driving of the lifting mechanism and the translation mechanism, the lifting mechanism can be displaced from the first cross beam limiting end to the first cross beam butt joint end through the lateral spacing area between the two first support cross beams, and the liftable movable plate is butt jointed with the two first support cross beam ends and the top surfaces are flush.

[0020] The second aspect of the present application provides an engineering machinery production line, which comprises the above-mentioned cab pre-installation auxiliary system.

[0021] By the above technical solution, when the cab is pre-installed at the bottom, the hoisting mechanism can suspend the cab by the lifting tool, under the cooperative driving of the translation mechanism and the lifting mechanism, the cab can be suspended in the air position suitable for the pre-installation at the bottom by the workers. The support displacement mechanism in the protection mechanism can drive the protection support to displace into the lifting mechanism, so that the support platform is arranged below the cab. Even if the cab falls due to the failure of the lifting tool, the support platform can support it, so as to avoid hitting the workers and ensure safe operation. Since the cab is suspended in the air during the pre-installation process, in addition to not needing to spend time and effort to support and position the cab before pre-installation, the activity space of the workers is also increased. Overall, the difficulty of the pre-installation process can be reduced, the manpower, time and ground occupation space can be saved, and the work efficiency can be effectively improved. After the pre-installation is completed, the support displacement mechanism can also drive the protection support to displace again into the elevated structure for buffering, and the hoisting mechanism can continue to hoist the cab. The connection between different actions is smooth, and the degree of automation is high.

[0022] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and together with the following specific embodiments, serve to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0024] Figure 1 is a schematic view of a hoisting mechanism and a cab in the specific embodiments of the present application;

[0025] Figure 2 This is a schematic diagram of a protective mechanism according to a specific embodiment of the present invention;

[0026] Figures 3 to 6 In order of adoption Figure 1 hoisting mechanism and Figure 2 A schematic diagram of the various states of the auxiliary control room of the protective mechanism during pre-installation;

[0027] Figure 7 for Figure 5 The image shows the pre-installed auxiliary systems in the operator's cab and a side view of the operator's cab.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Lifting device 2. Lifting mechanism

[0030] 3. Elevated structure; 4. Support unit

[0031] 5. Cylinder section 6. Telescopic rod

[0032] 7 Clamp-type pusher 8 Control room

[0033] 21. Sliding movable platform 22. Lifting movable platform

[0034] 23 Scissor-type folding mechanism 31 First support beam

[0035] 32 Second support beam 41 Support platform section

[0036] 42 Bracket suspension part; 43 Vertical protective plate

[0037] 421 Suspension slider Detailed Implementation

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0040] In the embodiments of the present invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positional relationships of the components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0041] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0042] like Figures 1 to 7As shown, the first exemplary embodiment of the present application provides a kind of operating chamber preloading auxiliary system, it includes lifting mechanism and protection mechanism, by the cooperation of lifting mechanism and protection mechanism, it can be realized that operating chamber 8 is transferred in the air, preloading in the air and air protection.

[0043] Specifically, lifting mechanism includes lifting appliance 1, lifting mechanism 2 and translation mechanism (not shown in the drawing).Lifting appliance 1 is used to suspend operating chamber 8, lifting mechanism 2 is connected at the top of lifting appliance 1 to be able to drive lifting appliance 1 to lift, translation mechanism is used to drive lifting mechanism 2 to translate, also drive lifting appliance 1 to translate simultaneously.

[0044] Protection mechanism includes high-level structure 3, protection support and support displacement mechanism.Both protection support and support displacement mechanism are movably arranged on high-level structure 3, the bottom of protection support is provided with support platform part 41, and support displacement mechanism can drive protection support to displace between high-level structure 3 and lifting mechanism 2.

[0045] In the state that protection support displaces to lifting mechanism 2, protection support forms fixed connection along vertical direction with lifting mechanism 2 to be able to lift synchronously, and support platform part 41 is located below operating chamber 8.

[0046] Through the above setting, when operating chamber preloading auxiliary system of the present exemplary embodiment is used, lifting mechanism can suspend operating chamber 8 by lifting appliance 1, under the collaborative driving of translation mechanism and lifting mechanism 2, operating chamber 8 can be suspended in the air position suitable for preloading on the bottom by operating personnel.Protection support displacement mechanism in protection mechanism can drive protection support to displace into lifting mechanism 2, so that support platform part 41 is placed below operating chamber 8, so that even if operating chamber 8 falls due to the failure of lifting appliance 1, it can be supported by support platform part 41, to avoid hitting operating personnel, to ensure safe operation.Operating chamber 8 remains suspended in the air during preloading process, in addition to not needing to spend time and effort to pre-support and position operating chamber 8 before preloading, it also increases the activity space of operating personnel, and overall, it can reduce the difficulty of preloading process, save manpower, time and ground occupation space, and effectively improve work efficiency.After preloading is completed, support displacement mechanism can also drive protection support to displace into high-level structure 3 for buffering, and lifting mechanism can continue to lift operating chamber 8, so that the connection between different actions is smooth, and the degree of automation is high.

[0047] In an embodiment, high-level structure 3 includes two first support cross beams 31 arranged in parallel and spaced apart in the transverse direction.Lifting mechanism 2 includes a liftable movable plate 22 arranged in the transverse direction, and the top of lifting appliance 1 is fixedly connected with the liftable movable plate 22, so that when the liftable movable plate 22 moves up and down, the lifting appliance 1 moves up and down synchronously, so that the operating chamber 8 also moves up and down synchronously.Protection support includes two support units 4, and the top of each support unit 4 is formed with a support suspension part 42 extending in the transverse direction, and the bottom of each support unit 4 is formed with a support platform part 41.

[0048] Under the coordinated drive of the lifting mechanism 2 and the translation mechanism, referring to Figure 4 The liftable movable plate 22 and the two first support beams 31 can be connected at their ends and have their top surfaces flush. Furthermore, driven by the bracket displacement mechanism, the bracket suspension part 42 can move along the end-connected liftable movable plate 22 and the first support beams 31. When pre-installation of the bottom of the control room 8 is required, refer to... Figure 5 The bracket suspension part 42 can be moved to be suspended on the liftable movable plate 22, as shown in the figure. Figure 6 At this time, the support unit 4 can synchronously descend to a suitable height along with the liftable movable plate 22, the lifting device 1, and the operator's cab 8 to facilitate the pre-installation of the bottom of the operator's cab 8 by the operators. After the pre-installation is completed, the liftable movable plate 22 is raised until it re-connects with the ends of the two first support beams 31 and is flush with the top surface, as shown in the reference. Figure 4 The bracket suspension part 42 can be moved to be suspended on the corresponding first support beam 31, so that the bracket unit 4 is buffered on the elevated structure 3, and the hoisting mechanism can continue to hoist the control room 8.

[0049] In one embodiment, the top surface of each first support beam 31 is formed with a first beam groove, the top surface of the liftable movable plate 22 is formed with two movable plate grooves arranged in parallel and spaced apart, and each bracket suspension part 42 is formed with a suspension part slide bar 421. The suspension part slide bar 421 can form a sliding engagement with the first beam groove and the movable plate groove.

[0050] With the movable plate 22 aligned with the ends of the two first support beams 31 and their top surfaces flush, the two movable plate grooves are respectively aligned with the ends of the two first beam grooves. The movable plate grooves and the first beam grooves together form a mating groove. At this time, the suspension slider 421 can slide within the corresponding mating groove, thereby allowing the bracket suspension part 42 to be suspended from the movable plate 22 or the corresponding first support beam 31.

[0051] By setting the above-mentioned sliding fit structure, it can be ensured that the support displacement mechanism drives the support unit 4 to move along the preset path (i.e. the extension direction of the slide groove), thereby improving the reliability of the pre-installed auxiliary system in the control room.

[0052] In one embodiment, reference is made to... Figure 7, the suspension part sliding bar 421 is formed as a suspension part tenon, and the abutment sliding groove is formed as an abutment mortise. In this structure, the cooperation of the suspension part tenon and the abutment mortise can prevent the bracket suspension part 42 from being separated from the first support beam 31 or the liftable movable plate 22, so that no other structure for preventing the bracket suspension part 42 from falling off needs to be additionally provided, the operating cab pre-installation auxiliary system is simplified, the machining difficulty is reduced, and the cost is saved while the reliability and stability are ensured.

[0053] In an embodiment, the bracket displacement mechanism includes a linear telescopic device (for example, an electric cylinder, a hydraulic cylinder, an air cylinder, a linear motor, etc.) arranged along the length direction of the first support beam 31. In the state that the liftable movable plate 22 is abutted and the top surfaces are flush with the two end portions of the first support beam 31, the bracket suspension part 42 can be driven to move along the liftable movable plate 22 and the first support beam 31 abutted at the end portions through the telescopic action of the linear telescopic device.

[0054] For example, the linear telescopic device can include a cylinder barrel part 5 and a telescopic rod 6 telescopically and movably inserted into the cylinder barrel part 5, and the telescopic rod 6 is connected with two clamping pushers 7 arranged at intervals along the length direction of the rod, and the bracket suspension part 42 is located between the two clamping pushers 7. Referring to Figure 4 and Figure 5 , if the telescopic rod 6 moves leftward from the cylinder barrel part 5 in the order of Figures 4 to 5 , the bracket suspension part 42 will be pushed by the right clamping pusher 7 from the first support beam 31 to the liftable movable plate 22. If the telescopic rod 6 moves rightward in the order of Figures 5 to 4 , the bracket suspension part 42 will be pushed by the left clamping pusher 7 from the liftable movable plate 22 to the first support beam 31.

[0055] Of course, in some other embodiments, the telescopic rod 6 can also directly contact the bracket suspension part 42 to drive the bracket suspension part 42 to move along the liftable movable plate 22 and the first support beam 31 abutted at the end portions.

[0056] In an embodiment, the overhead structure 3 comprises two second support beams 32 vertically and parallelly spaced apart from the two first support beams 31 respectively, and the telescopic rod 6 is arranged above the second support beams 32, and the second support beams 32 are formed with second beam sliding grooves extending along the length direction of the second support beams 32 and vertically through the second support beams 32. At this time, the two clamping pushers 7 on the telescopic rod 6 are vertically through the second beam sliding grooves and are in sliding fit with the second beam sliding grooves. In this way, the movement of the clamping pushers 7 is not affected, and the clamping pushers 7 are supported by the sliding fit with the second beam sliding grooves, and the additional load pressure of the telescopic rod 6 due to the arrangement of the clamping pushers 7 is shared, so that the telescopic rod 6 is prevented from deforming and being scrapped too early, and the system is more reliable, stable and durable.

[0057] In an embodiment, the protection bracket comprises a vertical protection plate 43, and the bracket suspension part 42 and the bracket platform part 41 are connected to the upper and lower ends of the vertical protection plate 43. During the pre-installation of the bottom of the operating chamber 8, the vertical protection plate 43 can form a large-area protection for the outer peripheral part of the operating chamber 8, so as to avoid that other aerial work equipment or workpieces in the production line accidentally collide with the operating chamber 8.

[0058] In an embodiment, the lifting mechanism 2 further comprises a translatable movable plate 21 and a scissor folding mechanism 23. The translatable movable plate 21 is connected to the translation mechanism, and the translatable movable plate 21 is vertically and parallelly spaced apart from the liftable movable plate 22 and is connected by the scissor folding mechanism 23. In this way, the translation of the translatable movable plate 21 driven by the translation mechanism directly drives the overall translation of the hoisting mechanism, and the folding or unfolding of the scissor folding mechanism 23 correspondingly drives the lifting or lowering of the liftable movable plate 22.

[0059] In an embodiment, the two ends of the first support beam 31 are formed into a first beam butt joint end and a first beam limiting end respectively, and the first beam limiting end is connected with a limiting structure capable of preventing the bracket unit 4 from moving out of the first support beam 31, for example, referring to Figure 2 The limiting structure can be a fixed base plate connected to the right end of the first support beam 31 and the right end of the second support beam 32, which can prevent the bracket unit 4 from moving out of the right end of the first support beam 31.

[0060] In this embodiment, under the cooperative driving of the lifting mechanism 2 and the translation mechanism, the lifting mechanism 2 can be displaced from the first beam limiting end to the first beam butt joint end through the lateral spacing area between the two first support beams 31, and the liftable movable plate 22 is in butt joint and top flush with the two first support beam ends, for example, referring to Figure 7 , and according to Figures 3 to 4In fact, it is equivalent to setting the protection mechanism in the hoisting path of the hoisting mechanism, so that the hoisting mechanism with the operating cab 8 can perform the bottom pre-assembly operation when passing through the position provided with the protection mechanism, thereby making the arrangement of the protection mechanism and the hoisting mechanism more concentrated and optimizing the production line space.

[0061] The second exemplary embodiment of the present application also provides an engineering machinery production line comprising the operating cab pre-assembly auxiliary system described above. Obviously, the engineering machinery production line has all the technical effects brought by the operating cab pre-assembly auxiliary system, and thus the description is not repeated here.

[0062] The optional embodiments of the embodiments of the present application are described in detail above in combination with the drawings, but the embodiments of the present application are not limited to the specific details in the above-described embodiments. Within the technical concept of the embodiments of the present application, the technical solutions of the embodiments of the present application can be variously modified, and these simple modifications all belong to the protection scope of the embodiments of the present application.

[0063] In addition, it should be noted that each specific technical feature described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present application does not further describe various possible combinations.

[0064] In addition, the various different embodiments of the embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the embodiments of the present application, and it should be considered as disclosed by the embodiments of the present application.

Claims

1. A pre-installed auxiliary system in an operator's cab, characterized in that, The pre-installed auxiliary system in the control room includes: The hoisting mechanism includes a hoisting device (1) for suspending the control room (8), a lifting mechanism (2) connected to the top of the hoisting device (1), and a translation mechanism for driving the lifting mechanism (2) to translate. The protective mechanism includes an elevated structure (3) and a protective bracket and a bracket displacement mechanism movably mounted on the elevated structure (3). The bottom of the protective bracket is provided with a bracket platform (41), and the bracket displacement mechanism can drive the protective bracket to move between the elevated structure (3) and the lifting mechanism (2). When the protective bracket is displaced to the lifting mechanism (2), the protective bracket and the lifting mechanism (2) form a fixed vertical connection so that they can be lifted and lowered synchronously, and the bracket platform (41) is located below the control room (8).

2. The pre-installed auxiliary system in the control room according to claim 1, characterized in that, The elevated structure (3) includes two first support beams (31) arranged parallel to each other in the transverse direction. The lifting mechanism (2) includes a liftable movable plate (22) arranged in the transverse direction. The top of the hoist (1) is fixedly connected to the liftable movable plate (22). The protective bracket includes two bracket units (4). Each bracket unit (4) has a bracket suspension part (42) extending in the transverse direction at the top and a bracket platform part (41) at the bottom. Under the coordinated drive of the lifting mechanism (2) and the translation mechanism, the liftable movable plate (22) and the two first support beams (31) can be connected at the ends and have their top surfaces flush. Under the drive of the bracket displacement mechanism, the bracket suspension part (42) can move along the end-connected liftable movable plate (22) and the first support beams (31) to be suspended on the liftable movable plate (22) or the corresponding first support beams (31).

3. The pre-installed auxiliary system in the control room according to claim 2, characterized in that, Each of the first support beams (31) has a first beam groove on its top surface, and the top surface of the liftable movable plate (22) has two movable plate grooves arranged in parallel and spaced apart. Each of the bracket suspension parts (42) has a suspension part slide bar (421). When the movable plate (22) is aligned with the ends of the two first support beams (31) and the top surfaces are flush, the two movable plate grooves are aligned with the ends of the two first beam grooves respectively, and the suspension slide bar (421) can slide in the alignment groove formed by the movable plate groove and the first beam groove.

4. The pre-installed auxiliary system in the control room according to claim 3, characterized in that, The suspension slide bar (421) and the docking groove form a mortise and tenon sliding fit. The suspension slide bar (421) is formed as a suspension tenon, and the docking groove is formed as a docking mortise.

5. The pre-installed auxiliary system in the control room according to claim 2, characterized in that, The support displacement mechanism includes a linear telescopic device arranged along the length of the first support beam (31). When the liftable movable plate (22) is aligned with the ends of the two first support beams (31) and the top surfaces are flush, the support suspension part (42) can move along the liftable movable plate (22) and the first support beams (31) aligned at the ends by the extension and retraction action of the linear telescopic device.

6. The pre-installed auxiliary system in the control room according to claim 5, characterized in that, The linear telescopic device includes a cylinder section (5) and a telescopic rod (6) that is telescopically and movably inserted into the cylinder section (5). Two clamp-type pushers (7) are connected to the telescopic rod (6) and are spaced apart along the length of the rod. The bracket suspension section (42) is located between the two clamp-type pushers (7).

7. The pre-installed auxiliary system in the control room according to claim 6, characterized in that, The elevated structure (3) includes two second support beams (32) that are vertically parallel to and spaced apart from the two first support beams (31). The telescopic rod (6) is positioned above the second support beams (32). The second support beams (32) have second beam grooves that extend along the length of the second support beams (32) and penetrate the second support beams (32) vertically. The two clamp-type pushers (7) on the telescopic rod (6) both pass vertically through the second beam grooves and both form a sliding fit with the second beam grooves.

8. The pre-installed auxiliary system in the control room according to claim 2, characterized in that, The protective bracket includes a vertical protective plate (43), and the bracket suspension part (42) and the bracket platform part (41) are connected to the upper and lower ends of the vertical protective plate (43).

9. The pre-installed auxiliary system in the control room according to claim 2, characterized in that, The lifting mechanism (2) includes a movable plate (21) that can be moved horizontally, a movable plate (22) that can be lifted vertically, and a scissor-type folding mechanism (23). The movable plate (21) is connected to the horizontal moving mechanism. The movable plate (21) and the movable plate (22) are arranged parallel to each other vertically and are connected by the scissor-type folding mechanism (23).

10. The pre-installed auxiliary system for the operator's cab according to any one of claims 2 to 9, characterized in that, The two ends of the first support beam (31) are respectively formed as a first beam docking end and a first beam limiting end. The first beam limiting end is connected to a limiting structure that can prevent the support unit (4) from moving out of the first support beam (31). Under the coordinated drive of the lifting mechanism (2) and the translation mechanism, the lifting mechanism (2) can move from the limiting end of the first beam to the docking end of the first beam through the lateral interval area between the two first support beams (31), and make the liftable movable plate (22) dock with the ends of the two first support beams (31) and the top surface flush.

11. A production line for engineering machinery, characterized in that, The engineering machinery production line includes a pre-installed auxiliary system for the operator's cab as described in any one of claims 1 to 10.

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