Cab lifting appliance

Abstract

The utility model relates to the field of lifting equipment, in particular to a cab lifting appliance. The cab lifting appliance comprises a lifting frame which comprises two parallel cross beams, and the cross beams extend in the first direction; a pivot shaft is arranged at one end of each suspension arm, and the two ends of each pivot shaft are respectively connected with one cross beam; the driving mechanism is connected to the lifting arms and used for driving at least one lifting arm to move in the first direction; and the control mechanism is electrically connected with the driving mechanism and is used for sensing the lifting weight of the cab lifting appliance and controlling the driving state of the driving mechanism. According to the cab lifting appliance, the lifting appliance can be in a folded state, the storage space of the lifting appliance is reduced, the requirement for the storage space is lowered, automatic control over lifting appliance adjustment is achieved, the lifting difficulty is lowered, the adjusting efficiency of the lifting appliance is improved, the labor intensity of an operator is lowered, the lifting weight is sensed, and work safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of lifting equipment, and in particular to a cab lifting device. Background Art

[0002] When the cab is hoisted during the trial production stage of the vehicle, the cab is lifted by hooking the cab with a cab hoist.

[0003] In the related art, the cab hoist is large in size and difficult to fold. During hoisting, the width between the booms is adjusted manually to meet the hoisting requirements of cabs of different sizes. During hoisting, the weight lifted by the hoist cannot be sensed in real time.

[0004] However, since the sling is difficult to fold, it occupies a lot of storage space and has high requirements for the storage environment. In addition, due to the large size, variety and weight of the vehicle cab, it is difficult to hoist during assembly. The manual adjustment of the sling has poor adjustment flexibility, long adjustment time, high labor intensity for the operator, and certain safety hazards. Since the operator cannot sense the weight lifted by the sling, he cannot understand the actual load situation, which may cause overload or unstable hoisting state, increasing safety hazards. Utility Model Content

[0005] Based on this, it is necessary to provide a cab hoist that can make the hoist appear in a folded state, reduce the storage space of the hoist, and reduce the requirements for the storage environment. At the same time, the flexibility of the hoist is improved, the automatic control of the hoist adjustment is realized, the difficulty of hoisting is reduced, the adjustment efficiency of the hoist is improved, the labor intensity of the operator is reduced, and the work safety is improved. In addition, the hoisted weight can be sensed so that the hoist can be adjusted according to the actual load conditions, which improves work safety. The width between the booms can be adjusted to meet the hoisting requirements of cabs of different sizes, reduce the difficulty of hoisting during assembly, improve the adjustment efficiency of the cab hoist, and reduce the labor intensity of the operator.

[0006] A cab hoist comprises: a hanger, comprising two mutually parallel beams, the beams extending along a first direction; two booms, one end of which is provided with a pivot shaft, and the two ends of the pivot shaft are respectively connected to a beam; a driving mechanism, the driving mechanism is connected to the boom to drive at least one boom to move along the first direction; and a control mechanism, the control mechanism is electrically connected to the driving mechanism to sense the weight lifted by the cab hoist and control the driving state of the driving mechanism.

[0007] In some embodiments, the driving mechanism includes: a motor, which is electrically connected to the control mechanism; a screw, which is connected to the boom; and a transmission mechanism, which is connected to the motor and the screw; wherein the motor transmits power to the screw through the transmission mechanism, and the screw drives at least one boom to move in a first direction.

[0008] In some of the embodiments, both ends of the lead screw are provided with forward and reverse threads, and the pivot shaft is provided with a thread block matching with the threads.

[0009] In some embodiments, the transmission mechanism includes: a large bevel gear, which is connected to the motor; a small bevel gear, which is meshed with the large bevel gear; a small gear, which is connected to the small bevel gear; a large gear, which is meshed with the small gear and connected to the screw; wherein the motor transmits power to the screw through the large bevel gear, the small bevel gear, the small gear and the large gear in sequence.

[0010] In some embodiments, the transmission mechanism further includes: a first transmission shaft connected to the motor and the large bevel gear; and a second transmission shaft connected to the small bevel gear and the small gear.

[0011] In some of the embodiments, a guide rail is provided on the crossbeam, and both ends of the pivot shaft are respectively connected to a guide rail.

[0012] In some embodiments, first bearings are respectively disposed at both ends of the pivot shaft, and the first bearings slide along the guide rail.

[0013] In some of the embodiments, two ends of the crossbeam are provided with positioning pins, and the positioning pins are used to limit the movement of the boom along the first direction.

[0014] In some of the embodiments, the hanger further includes two reinforcing beams, both ends of the reinforcing beams are respectively connected to a cross beam, and the two reinforcing beams are spaced apart in a middle area of ​​the hanger to limit the movement of the boom along the first direction.

[0015] In some of the embodiments, a pad is provided at one end of the boom away from the pivot axis, and the pad is used to support the cab door frame.

[0016] The above-mentioned cab hoist is provided with a pivot shaft through a section of the boom, and both ends of the pivot shaft are respectively connected to a cross beam. The boom can rotate around the pivot shaft so that the hoist is in a folded state, which reduces the storage space of the hoist and reduces the requirements of the cab hoist on the storage environment.

[0017] The above-mentioned cab hoist is connected to the boom by arranging a driving mechanism to drive at least one boom to move along the first direction, thereby improving the flexibility of the hoist, improving the adjustment efficiency of the hoist, reducing the labor intensity of the operator, and improving work safety.

[0018] The above-mentioned cab hoist, by arranging an electrical connection between the control mechanism and the driving mechanism, the control mechanism controls the driving state of the driving mechanism, thereby realizing automatic control of the hoist adjustment, reducing the difficulty of hoisting during assembly, improving the adjustment efficiency of the hoist, reducing the labor intensity of the operator, and improving work safety.

[0019] The above cab hoist senses the weight lifted by the cab hoist through a control mechanism, so that the hoist can be adjusted according to the actual load conditions, ensuring that the hoisting operation is performed within a safe load range, thereby improving work safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the cab lifting device in one embodiment of the present application.

[0021] Figure 2 It is a front view of a cab spreader in one embodiment of the present application.

[0022] Figure 3 It is a left view of the cab lifting device in one embodiment of the present application.

[0023] Figure 4 It is a right side view of the cab lifting device in one embodiment of the present application.

[0024] Figure 5 It is a top view of a cab spreader in one embodiment of the present application.

[0025] Figure 6 It is a bottom view of the cab spreader in one embodiment of the present application.

[0026] Description of Reference Numerals

[0027] 1. Cab hoist;

[0028] 10. hanger; 110. crossbeam; 111. guide rail; 112. positioning pin; 120. reinforcing beam; 130. lifting ring; 140. fixing bracket; 150. supporting plate;

[0029] 20, suspension arm; 210, pivot shaft; 211, threaded block; 212, first bearing; 220, suspension plate; 230, spacer block; 240, suspension ear;

[0030] 30. driving mechanism; 310. motor; 320. lead screw; 330. transmission mechanism; 331. large bevel gear; 332. small bevel gear; 333. small gear; 334. large gear; 335. first transmission shaft; 336. second transmission shaft; 337. second bearing;

[0031] 40. Control agency;

[0032] 50.Battery. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0034] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0035] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0037] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0039] See also Figures 1 to 6 An embodiment of the present application provides a cab hoist 1, comprising a hanger 10, two arms 20, a driving mechanism 30 and a control mechanism 40. The hanger 10 comprises two parallel beams 110, and the beams 110 extend along a first direction. A pivot shaft 210 is provided at one end of the arm 20, and both ends of the pivot shaft 210 are respectively connected to a beam 110. The driving mechanism 30 is connected to the arm 20 for driving at least one arm 20 to move along the first direction. The control mechanism 40 is electrically connected to the driving mechanism 30 for sensing the weight hoisted by the cab hoist 1 and controlling the driving state of the driving mechanism 30.

[0040] The cab hoist 1 provided in the present application is provided with a pivot shaft 210 through a section of the boom 20, and both ends of the pivot shaft 210 are respectively connected to a cross beam 110. The boom 20 can rotate around the pivot shaft 210, so that the hoist is in a folded state, which reduces the storage space of the hoist and reduces the requirements of the cab hoist 1 on the storage environment.

[0041] The cab hoist 1 provided in the present application is connected to the boom 20 by setting a driving mechanism 30 to drive at least one boom 20 to move along a first direction, thereby improving the flexibility of the hoist, improving the adjustment efficiency of the hoist, reducing the labor intensity of the operator, and improving work safety.

[0042] The cab hoist 1 provided in the present application realizes automatic control of the hoist adjustment by setting an electrical connection between the control mechanism 40 and the drive mechanism 30, and the control mechanism 40 controls the drive state of the drive mechanism 30, thereby reducing the difficulty of hoisting during assembly, improving the adjustment efficiency of the hoist, and reducing the labor intensity of the operator.

[0043] The cab hoist 1 provided in the present application senses the weight lifted by the cab hoist 1 through the control mechanism 40, so that the hoist can be adjusted according to the actual load conditions, ensuring that the hoist is operated within a safe load range, thereby improving work safety.

[0044] In some embodiments, the driving mechanism 30 includes a motor 310, a lead screw 320, and a transmission mechanism 330. The motor 310 is electrically connected to the control mechanism 40. The lead screw 320 is connected to the boom 20. The transmission mechanism 330 is connected to the motor 310 and the lead screw 320. The motor 310 transmits power to the lead screw 320 through the transmission mechanism 330, and the lead screw 320 drives at least one boom 20 to move along the first direction.

[0045] The motor 310 is electrically connected to the control mechanism 40, and the control mechanism 40 is used to control the forward and reverse rotation of the motor 310. When the motor 310 rotates forward and reverse, the power is transmitted to the lead screw 320 through the transmission mechanism 330, and the lead screw 320 drives at least one boom 20 to move along the first direction, thereby realizing the automatic control of the spreader adjustment, reducing the difficulty of the lifting during assembly, improving the adjustment efficiency of the cab spreader 1, reducing the labor intensity of the operator, and improving the work safety.

[0046] In some embodiments, both ends of the lead screw 320 are provided with forward and reverse threads, and the pivot shaft 210 is provided with a thread block 211 that matches the threads.

[0047] The thread block 211 cooperates with the thread of the lead screw 320 to make the position adjustment of the boom 20 more stable, and improve the stability of the cab hoist 1. When the motor 310 rotates forward and reverse, the power is transmitted to the lead screw 320 through the transmission mechanism 330. The two ends of the lead screw 320 are provided with forward and reverse threads, and the pivot shaft 210 is provided with a thread block 211 that matches the thread. Therefore, the lead screw 320 drives the boom 20 to slide toward or away from each other in the first direction, so that the width between the booms 20 can be adjusted to meet the hoisting requirements of cabs of different sizes, reduce the hoisting difficulty during assembly, improve the adjustment efficiency of the cab hoist 1, reduce the labor intensity of the operator, and improve work safety.

[0048] In some embodiments, Figure 6As shown, the transmission mechanism 330 includes a large bevel gear 331, a small bevel gear 332, a small gear 333 and a large gear 334. The large bevel gear 331 is connected to the motor 310. The small bevel gear 332 is meshed with the large bevel gear 331. The small gear 333 is connected to the small bevel gear 332. The large gear 334 is meshed with the small gear 333 and connected to the lead screw 320. Among them, the motor 310 transmits power to the lead screw 320 through the large bevel gear 331, the small bevel gear 332, the small gear 333 and the large gear 334 in sequence.

[0049] When the motor 310 rotates forward and reversely, it is connected to the motor 310 through the large bevel gear 331, and the motor 310 transmits power to the large bevel gear 331. The large bevel gear 331 is meshed with the large bevel gear 331 through the small bevel gear 332, and the large bevel gear 331 transmits power to the small bevel gear 332. The small bevel gear 333 is connected to the small bevel gear 332, and the small bevel gear 332 transmits power to the small gear 333. The large gear 334 is meshed with the small gear 333 and connected to the lead screw 320, and the small bevel gear 332 transmits power to the small gear 333, and the small gear 333 transmits power to the lead screw 320. The present application transmits the power generated by the motor 310 to the lead screw 320 through the transmission design of the large bevel gear 331, the small bevel gear 332, the small gear 333 and the large gear 334, thereby improving the transmission efficiency. In addition, the gear transmission structure has good wear resistance and durability, can operate stably for a long time, and reduces the maintenance cost and failure rate.

[0050] In some embodiments, Figure 2 , Figure 3 and Figure 6 As shown, the transmission mechanism 330 further includes a first transmission shaft 335 and a second transmission shaft 336. The first transmission shaft 335 is connected to the motor 310 and the large bevel gear 331. The second transmission shaft 336 is connected to the small bevel gear 332 and the small gear 333.

[0051] The first transmission shaft 335 is connected between the motor 310 and the large bevel gear 331, and transmits the power of the motor 310 to the large bevel gear 331. The second transmission shaft 336 is connected between the small bevel gear 332 and the small gear 333, and transmits the power from the small bevel gear 332 to the small gear 333. Through the first transmission shaft 335 and the second transmission shaft 336, the power transmission is more direct, and the transmission efficiency is improved.

[0052] In some embodiments, a guide rail 111 is disposed on the crossbeam 110 , and both ends of the pivot shaft 210 are respectively connected to a guide rail 111 .

[0053] A guide rail 111 is provided on the crossbeam 110 , and both ends of the pivot shaft 210 are respectively connected to a guide rail 111 . The pivot shaft 210 can move smoothly along the guide rail 111 , thereby realizing flexible adjustment of the position of the boom 20 and improving the stability of the boom 20 when moving.

[0054] In some embodiments, first bearings 212 are respectively disposed at both ends of the pivot shaft 210 , and the first bearings 212 slide along the guide rail 111 .

[0055] The first bearing 212 slides along the guide rail 111 to provide stable support for the boom 20 and improve the stability of the boom 20 when moving.

[0056] In some embodiments, positioning pins 112 are provided at both ends of the crossbeam 110 , and the positioning pins 112 are used to limit the movement of the boom 20 along the first direction.

[0057] The provision of the positioning pin 112 can limit the movement of the boom 20 in the first direction, limit the maximum range of movement of the boom 20, help to more accurately adjust the boom 20, and improve the efficiency of adjusting the boom 20. In addition, the positioning pin 112 prevents the boom 20 from accidentally moving or deviating outside the hanger 10, thereby improving the safety of hoisting.

[0058] In some embodiments, the hanger 10 further includes two reinforcing beams 120 , both ends of which are respectively connected to a cross beam 110 , and the two reinforcing beams 120 are spaced apart in the middle area of ​​the hanger 10 to limit the movement of the boom 20 along the first direction.

[0059] The reinforcing beam 120 is connected to the cross beam 110, and the cross beam 110 and the reinforcing beam 120 together form a frame structure, which increases the structural strength of the hanger 10, increases the load weight of the hanger 10, and thus increases the carrying capacity of the cab hanger 1. The reinforcing beam 120 limits the movement of the boom 20 in the first direction, limits the minimum range of movement of the boom 20, helps to adjust the boom 20 more accurately, and improves the efficiency of adjusting the boom 20.

[0060] Optionally, the distance between the two suspension arms 20 ranges from 1400 mm to 2600 mm. The cab hoist 1 can combine different lifting strategies according to different cab sizes. The adjustable range between the two suspension arms 20 covers the width of the cab body-in-white and assembly commonly used in commercial vehicles, has strong practicality, and meets the lifting requirements of cabs of different sizes.

[0061] In some embodiments, a cushion block 230 is provided at one end of the boom 20 away from the pivot shaft 210 , and the cushion block 230 is used to support the cab door frame.

[0062] The present application provides a cushion block 230 for supporting the cab door frame when hoisting the cab, thereby reducing the risk of the cab body-in-white being squeezed and deformed.

[0063] Optionally, the boom 20 includes a hanging plate 220 . The hanging plate 220 is disposed at one end of the boom 20 away from the pivot shaft 210 , and the cushion block 230 is disposed on the hanging plate 220 .

[0064] In a specific embodiment, the pad 230 is a mouth-shaped pad, which includes a groove suitable for the mouth shape of a general commercial vehicle cab door frame, reducing the deformation of the cab due to uneven force during the lifting process and reducing the risk of the cab body being squeezed and deformed.

[0065] Optionally, a fixing hole is provided on the cushion block 230 for fixing the cushion block 230 on the hanging plate 220 .

[0066] Optionally, the pad 230 may be provided with a non-slip pattern on the surface in contact with the cab. Further, the pattern may be a wave pattern that is easier to process.

[0067] Optionally, the material of the pad 230 is a resin material. The resin material is flexible and has a large friction coefficient with the boom 20, which can ensure that the pad 230 does not slide during the cab hoisting process. In addition, the pad 230 made of resin material can also deform due to its own flexibility, reducing the deformation of the cab caused by uneven force during the hoisting process.

[0068] Optionally, the control mechanism 40 can be a centralized or distributed controller. For example, the controller can be a single single-chip microcomputer or a plurality of distributed single-chip microcomputers. The control program can be run in the single-chip microcomputer to sense the weight lifted by the cab hoist 1 and control the driving state of the driving mechanism 30.

[0069] In a specific embodiment, the control mechanism 40 is a digital display controller. In addition to sensing the weight hoisted by the cab hoist 1 and controlling the driving state of the driving mechanism 30, the digital display controller can also display the weight hoisted by the cab hoist 1 and the driving state of the driving mechanism 30, which is convenient for adjustment operation and improves the convenience of hoisting.

[0070] Optionally, the control mechanism 40 includes a weight sensor.

[0071] Optionally, the cab spreader 1 further comprises a battery 50, and the battery 50 is electrically connected to the motor 310 and the control mechanism 40. The battery 50 is used as a power source and can provide power to the motor 310 and the control mechanism 40.

[0072] Optionally, the battery 50 is a detachable battery. When the battery 50 runs out of power, it can be replaced, which improves the flexibility of use.

[0073] In some embodiments, the hanger 10 further includes a fixing bracket 140. Both ends of the fixing bracket 140 are connected to a cross beam 110 respectively, and are arranged in the middle area of ​​the hanger 10 and between the two reinforcing beams 120. The motor 310, the control mechanism 40 and the battery 50 are arranged on the fixing bracket 140.

[0074] The two ends of the fixed bracket 140 are respectively connected to a cross beam 110, and together with the cross beam 110, a frame structure is formed, which increases the structural strength of the hanger 10, thereby improving the load-bearing capacity of the cab hanger 1. The motor 310, the control mechanism 40 and the battery 50 are arranged on the fixed bracket 140, and the fixed bracket 140 provides support for the motor 310, the control mechanism 40 and the battery 50.

[0075] Optionally, the hanger 10 further includes a lifting ring 130. The lifting ring 130 is arranged on the crossbeam 110 and is located on both sides of the fixing bracket 140. The lifting ring 130 is arranged on the crossbeam 110 and can provide a lifting point for a lifting tool such as an overhead crane.

[0076] Optionally, there are multiple lifting rings 130. Multiple lifting rings 130 can provide multiple lifting points for the lifting tool, thereby improving the lifting stability.

[0077] Optionally, the lifting rings 130 are symmetrically arranged on both sides of the fixing bracket 140. The lifting rings 130 are symmetrically arranged on both sides of the fixing bracket 140, so that the lifting points are arranged symmetrically, thereby improving the balance of the hanger 10 when being lifted.

[0078] In some embodiments, such as Figure 6 As shown, the hanger 10 further includes a support plate 150 , which is disposed on the crossbeam 110 . A second bearing 337 is disposed on the second transmission shaft 336 and the lead screw 320 , and the second bearing 337 is disposed on the support plate 150 .

[0079] The support plate 150 provides rotation support for the second transmission shaft 336 and the lead screw 320 . The second bearing 337 improves the transmission stability of the second transmission shaft 336 and the lead screw 320 .

[0080] Optionally, a lifting ear 240 is provided at one end of the lifting arm 20 , and the pivot shaft 210 passes through the lifting ear 240 .

[0081] The cab lifting device 1 provided in the embodiment of the present application has a specific assembly process including the following steps:

[0082] First, the cross beam 110, the reinforcing beam 120, the support plate 150, the fixing bracket 140, and the lifting ring 130 are welded together to form the hanger 10; the motor 310, the control mechanism 40, and the battery 50 are assembled to the fixing bracket 140; the first transmission shaft 335, the large bevel gear 331, and the motor 310 are assembled together; the second bearing 337 and the small bevel gear 332 are assembled to the second transmission shaft 336, and then assembled to the support plate 150, and then the small gear 331 is assembled to the second transmission shaft 336. 33 is assembled to the second transmission shaft 336; the second bearing 337 is assembled to the screw 320, the large gear 334 is assembled to the screw 320, and then assembled to the support plate 150; the boom 20 and the first bearing 212 are assembled to the pivot shaft 210, and then the pivot shaft 210 is assembled to the beam 110; the locating pins 112 are assembled to both ends of the beam 110; finally, the pad 230 is assembled to the boom 20, thereby completing the overall assembly of the cab hoist 1.

[0083] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0084] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A cab lifting device, characterized in that: include: A hanger, comprising two mutually parallel beams, wherein the beams extend along a first direction; Two suspension arms, one end of each suspension arm is provided with a pivot shaft, and both ends of each pivot shaft are respectively connected to one of the cross beams; A driving mechanism, the driving mechanism being connected to the boom and used for driving at least one of the booms to move along a first direction; A control mechanism is electrically connected to the drive mechanism to sense the weight lifted by the cab hoist and control the drive state of the drive mechanism.

2. The cab lifting device according to claim 1, characterized in that: The driving mechanism comprises: a motor, the motor being electrically connected to the control mechanism; A lead screw connected to the boom; A transmission mechanism connected to the motor and the lead screw; The motor transmits power to the lead screw through the transmission mechanism, and the lead screw drives at least one of the booms to move in the first direction.

3. The cab lifting device according to claim 2, characterized in that: Both ends of the lead screw are provided with forward and reverse threads, and the pivot shaft is provided with a thread block matched with the threads.

4. The cab lifting device according to claim 2, characterized in that: The transmission mechanism comprises: A large bevel gear connected to the motor; A small bevel gear, the small bevel gear meshing with the large bevel gear; A pinion gear connected to the bevel pinion gear; A large gear meshing with the small gear and connected to the lead screw; Wherein, the motor transmits power to the lead screw through the large bevel gear, the small bevel gear, the small gear and the large gear in sequence.

5. The cab lifting device according to claim 4, characterized in that: The transmission mechanism also includes: A first transmission shaft, the first transmission shaft is connected to the motor and the large bevel gear; A second transmission shaft is connected to the bevel pinion and the pinion gear.

6. The cab lifting device according to any one of claims 1 to 5, characterized in that: A guide rail is arranged on the crossbeam, and both ends of the pivot shaft are respectively connected to one of the guide rails.

7. The cab lifting device according to claim 6, characterized in that: The two ends of the pivot shaft are respectively provided with first bearings, and the first bearings slide along the guide rail.

8. The cab lifting device according to any one of claims 1 to 5, characterized in that: Positioning pins are provided at both ends of the crossbeam, and the positioning pins are used to limit the movement of the boom along the first direction.

9. The cab lifting device according to any one of claims 1 to 5, characterized in that: The hanger also includes two reinforcing beams, both ends of which are connected to one of the cross beams respectively, and the two reinforcing beams are arranged at intervals in the middle area of ​​the hanger to limit the movement of the boom along the first direction.

10. The cab lifting device according to any one of claims 1 to 5, characterized in that: A cushion block is provided at one end of the boom away from the pivot shaft, and the cushion block is used to support the door frame of the cab.

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