A crane support device and a crane

Abstract

This invention relates to the field of mechanical technology and discloses a crane support device and a crane, comprising: a crane vehicle including a traveling crane vehicle and a lifting mechanism configured on the crane vehicle; a support device movably configured on the side of the crane vehicle, which can be opened or retracted relative to the crane vehicle, and the distance between its distal end and the crane vehicle increases during the opening process; the end of the support device is provided with a hydraulic telescopic support device, and the hydraulic telescopic support device can rotate relative to the crane; in the supported state, the telescopic end of the hydraulic telescopic support device faces downward; after the hydraulic telescopic support device extends, it lifts the vehicle. This invention, by flipping the outrigger cylinders of the crane in the non-supported state, allows the inner end of the cylinder telescopic arm to be retracted and abut against the inside of the cylinder, so that the vertical inertia generated during the vehicle's travel and bumping will not form an alternating load on the sealing ring with the negative pressure suction.

Description

Technical Field

[0001] This invention relates to the field of mechanical technology, and in particular to a crane support device and a crane. Background Technology

[0002] When the outrigger cylinders are retracted, the telescopic arms of the cylinders face downwards. Based on the internal structure of the cylinders, it was found that the inner end of the telescopic arm is sealed by an interference fit between a sealing ring and the inner wall of the cylinder. In the unsupported state, the telescopic arm of the cylinder tends to move downwards under the action of gravity. Especially when the vehicle is traveling on a bumpy road, the telescopic arm of the cylinder generates a large inertial force when the vehicle bounces up and down. This can easily lead to a shortened lifespan of the sealing ring under the alternating load of gravity, inertia, and negative pressure suction, resulting in failure. Summary of the Invention

[0003] The present invention provides a crane support device and a crane to solve the technical problems pointed out in the background art.

[0004] This invention is achieved by the following technical solution:

[0005] A crane support device and a crane, comprising:

[0006] Cranes, including traveling crane vehicles and lifting mechanisms mounted on the crane vehicles;

[0007] A support device, movably mounted on the side of the crane vehicle, can be opened or retracted relative to the crane vehicle. During opening, the distance between its distal end and the crane vehicle increases. The end of the support device is equipped with a hydraulic telescopic support device, which can rotate relative to the crane. In the supported state, the telescopic end of the hydraulic telescopic support device faces downwards, lifting the vehicle after it extends. In the retracted state (during vehicle movement), the telescopic end of the hydraulic telescopic support device faces upwards. By flipping the outrigger cylinders in the unsupported state, the inner end of the cylinder's telescopic arm is retracted and abuts against the inside of the cylinder. This prevents the vertical inertia generated during vehicle movement from creating an alternating load on the sealing ring due to negative pressure suction, thus improving the sealing ring's lifespan and enhancing equipment safety.

[0008] In a preferred embodiment, the support device includes a support arm, a hollow support arm portion, and a support arm end head. The hydraulic telescopic support device is fixed inside the support arm end head, and the movable part of the hydraulic telescopic support device can telescopically move relative to the support arm end head. The support arm end head is rotatably disposed at the end of the hollow support arm portion via a bearing. The hollow support arm portion and the support arm are integrally formed or welded together. A locking device is provided inside the hollow support arm portion to lock the support arm end head and the hollow support arm portion, preventing the support arm end head from shaking during support operation and ensuring the overall stability of the support device.

[0009] In a preferred embodiment, the hydraulic telescopic support device includes a cylinder, a cylinder telescopic arm, and a pad. The cylinder telescopic arm is telescopically disposed within the cylinder, and a sealing ring is provided at the tail end of the cylinder telescopic arm. The cylinder is existing technology and will not be described in detail. The pad is hinged to the outer end of the cylinder telescopic arm. The pad is used to increase the contact area when in contact with the ground, reducing the concentration of gravity that could lead to collapse or damage to the hardened ground, and thus improving stability during operation.

[0010] In a preferred embodiment, a transverse fixing frame is welded and fixed inside the hollow support arm, and a bearing is interference-fitted inside the transverse fixing frame. The end of the support arm is provided with a rotating shaft that is interference-fitted with the inner ring of the bearing, thereby allowing the end of the support arm to rotate relative to the hollow support arm.

[0011] In a preferred embodiment, the locking device includes a locker and a locking pin fixed to the front end of the locker. The locker has a travel that slides along one axis of the bearing, and the locking pin can be inserted into a locking hole reserved on the end face of the support arm head during the travel. The locking pin also includes a state of separation from the locking hole reserved on the end face of the support arm head during the travel. Specifically, when the locking pin is inserted into the locking hole reserved on the end face of the support arm head, the support arm head is locked relative to the hollow support arm portion, which has good connection stability and connection strength. When the locking pin is separated from the locking hole reserved on the end face of the support arm head, the support arm head can rotate relative to the hollow support arm portion.

[0012] In a preferred embodiment, the hollow support arm is fixedly provided with upper and lower slide rails, the travel direction of the slide rails is parallel to the axis of the bearing, and the upper and lower walls of the lock are fixedly provided with sliders, which are slidably disposed in the slide rails, thereby ensuring that the lock moves within a specified travel range, effectively improving the structural stability and structural strength.

[0013] In a preferred embodiment, in order to facilitate the adjustment of the position of the locking device to change its locking state on the end head of the support arm, a drive screw is rotatably provided inside the hollow support arm, and the locking device is provided with a screw hole that is threadedly connected to the drive screw. After the drive screw rotates, it drives the locking device to move back and forth along the axis of the bearing through the movement of the helical pair. The drive screw can be driven by a motor or manually.

[0014] In a preferred embodiment, to reduce costs and wiring complexity, a manual drive is employed, comprising a rotating shaft, two bearings II disposed within the hollow support arm, the rotating shaft being interference-fitted with the inner rings of the bearings II, a drive screw being fixedly mounted on one end of the rotating shaft, and a driven bevel gear coaxially keyed to the rotating shaft. The hollow support arm also contains a bearing III and a right-angle crank rotatably disposed within the bearing III. An active bevel gear is fixed to the end of the right-angle crank via a key, and the active bevel gear meshes with the driven bevel gear. The operating end of the right-angle crank extends out of the hollow support arm. Rotating the right-angle crank drives the rotating shaft, which in turn drives the drive screw. The drive screw and the locking device's helical pair cooperate to drive the locking device.

[0015] In a preferred embodiment, the driven bevel tooth is located between the two bearings, which improves the stability of the driven bevel tooth when transmitting torque.

[0016] In a preferred embodiment, when the hydraulic cylinder telescopic arm is in the retracted state, the center of gravity of the arm end and the hydraulic telescopic support device as a whole is collinear with the axis of the bearing. This facilitates rotating the arm end to face the hydraulic cylinder telescopic arm upward after the hydraulic telescopic support device is retracted. As a result, the sealing ring at the inner end of the hydraulic cylinder telescopic arm will not quickly fatigue and fail due to the alternating load formed by the inertial force and negative pressure suction caused by the up-and-down bumps during the crane's operation.

[0017] The advantages and positive effects of this invention are: by flipping the outrigger cylinder in the unsupported state, the inner end of the cylinder telescopic arm is retracted and abuts against the inside of the cylinder. In this way, the vertical inertia generated during the vehicle's bumpy driving will not form an alternating load on the sealing ring with the negative pressure suction, which helps to improve the service life of the sealing ring and enhance the safety of the equipment. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the present invention;

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 5 yes Figure 4 A structural diagram of section 11;

[0024] Figure 6 yes Figure 4 A structural diagram of the 11th tier (folded-up storage state).

[0025] Figure 7 yes Figure 4 A structural diagram of the 11th tier (folded-up storage state).

[0026] Figure 8 yes Figure 7 Schematic diagram of the cross-section along the AA direction;

[0027] Figure 9 This is a schematic diagram of the locking device structure in this invention (unlocked state);

[0028] Figure 10 This is a schematic diagram of the locking device structure (locked state) in this invention.

[0029] Reference numerals: 10. Crane; 11. Support device; 12. Support arm; 13. Hollow support arm section; 14. Support arm end head; 15. Hydraulic cylinder; 16. Hydraulic cylinder telescopic arm; 17. Pad block; 18. Horizontal fixing frame; 19. Bearing one; 20. Locking device; 21. Slide rail; 22. Slider; 23. Locking pin; 24. Hydraulic telescopic support device; 25. Drive screw; 26. Bearing two; 27. Rotating shaft; 28. Driven bevel gear; 29. ​​Bearing three; 30. Right-angle crank; 31. Driving bevel gear. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0031] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings:

[0032] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0033] like Figure 1-10 As shown, the crane support device and crane of the present invention include:

[0034] Crane 10 includes a traveling crane vehicle and a lifting mechanism mounted on the crane vehicle;

[0035] A support device 11 is movably configured on the side of the crane vehicle and can be opened or retracted relative to the crane vehicle. During the opening process, the distance between its far end and the crane vehicle increases. The end of the support device 11 is provided with a hydraulic telescopic support device 24, which can rotate relative to the crane 10. In the supported state, the telescopic end of the hydraulic telescopic support device 24 faces downward, and the hydraulic telescopic support device 24 lifts the vehicle after it extends. In the retracted state (during vehicle travel), the telescopic end of the hydraulic telescopic support device 24 faces upward. By flipping the outrigger cylinder in the non-supported state, the inner end of the cylinder telescopic arm is retracted and abuts against the inside of the cylinder. In this way, the vertical inertia generated during the vehicle's travel and bumping will not form an alternating load on the sealing ring with the negative pressure suction, which helps to improve the service life of the sealing ring and enhances the safety of the equipment.

[0036] In a preferred embodiment, the support device 11 includes a support arm 12, a hollow support arm portion 13, and a support arm end head 14. The hydraulic telescopic support device 24 is fixed inside the support arm end head 14, and the movable part of the hydraulic telescopic support device 24 can telescopically move relative to the support arm end head 14. The support arm end head 14 is rotatably disposed at the end of the hollow support arm portion 13 via a bearing. The hollow support arm portion 13 and the support arm 12 are integrally formed or welded together. A locking device is provided inside the hollow support arm portion 13 to lock the support arm end head 14 and the hollow support arm portion 13, preventing the support arm end head 14 from shaking during support operation and ensuring the overall stability of the support device 11.

[0037] In a preferred embodiment, the hydraulic telescopic support device 24 includes a cylinder 15, a cylinder telescopic arm 16, and a pad 17. The cylinder telescopic arm 16 is telescopically disposed within the cylinder 15, and a sealing ring is provided at the tail end of the cylinder telescopic arm 16. The cylinder 15 is existing technology and will not be described in detail. The pad 17 is hinged to the outer end of the cylinder telescopic arm 16. The pad 17 is used to increase the contact area when in contact with the supported ground, reduce the concentration of gravity that may cause collapse or damage to the hardened ground, and improve the stability during operation.

[0038] In a preferred embodiment, such as Figure 8 A transverse fixing frame 18 is welded and fixed inside the hollow support arm 13, and a bearing 19 is interference-fitted inside the transverse fixing frame 18. The support arm end head 14 is provided with a rotating shaft that is interference-fitted with the inner ring of the bearing 19, thereby allowing the support arm end head 14 to rotate relative to the hollow support arm 13.

[0039] In a preferred embodiment, the locking device includes a locker 20 and a locking pin 23 fixed to the front end of the locker 20. The locker 20 has a travel that slides along the axis of the bearing 19, and the locking pin 23 can be inserted into a locking hole pre-reserved on the end face of the support arm head 14 during the travel (e.g., ...). Figure 10 The locking pin 23 also includes a state of separation from the locking hole reserved on the end face of the support arm head 14 during the stroke (e.g. Figure 9 Specifically, when the locking pin 23 is inserted into the locking hole reserved on the end face of the support arm head 14, the support arm head 14 is locked relative to the hollow support arm part 13, which has good connection stability and connection strength. When the locking pin 23 is separated from the locking hole reserved on the end face of the support arm head 14, the support arm head 14 can rotate relative to the hollow support arm part 13.

[0040] In a preferred embodiment, such as Figure 8 The hollow support arm 13 is fixedly provided with upper and lower slide rails 21. The travel direction of the slide rails 21 is parallel to the axis of the bearing 19. The upper and lower walls of the locking device 20 are fixedly provided with sliders 22, and the sliders 22 are slidably disposed in the slide rails 21, thereby ensuring that the locking device 20 moves within a specified travel, effectively improving the structural stability and structural strength.

[0041] In a preferred embodiment, to facilitate adjustment of the position of the locking device 20 to change its locking state on the head 14 of the support arm, a drive screw 25 is rotatably provided inside the hollow support arm portion 13, and the locking device 20 is provided with a threaded hole that is threadedly connected to the drive screw 25. After the drive screw 25 rotates, it drives the locking device 20 to move back and forth along the axis of the bearing 19 through the movement of the helical pair. The drive screw 25 can be driven by a motor or manually. Specifically, in the case of motor driving, a motor that drives the drive screw 25 can be configured inside the hollow support arm portion 13. This is something that can be implemented by those skilled in the art and will not be described in detail.

[0042] In a preferred embodiment, to reduce costs and wiring complexity, a manual drive is employed, comprising a rotating shaft 27, two bearings 26 disposed within the hollow support arm 13, the rotating shaft 27 and the inner rings of the bearings 26 being interference-fitted, a drive screw 25 being fitted and fixed to one end of the rotating shaft 27, a driven bevel gear 28 coaxially keyed to the rotating shaft 27, a bearing 29 and a right-angle crank 30 rotatably disposed within the bearing 29, the end of the right-angle crank 30 being keyed with a driving bevel gear 31, the driving bevel gear 31 meshing with the driven bevel gear 28, and the operating end of the right-angle crank 30 extending out of the hollow support arm 13 (e.g., ...). Figure 5 The right-angle crank 30 drives the rotating shaft 27 to rotate the drive screw 25, and the drive screw 25 and the lock 20 are driven by the screw pair of the drive screw 25 and the lock 20.

[0043] In a preferred embodiment, the driven bevel tooth 28 is located between the two bearings 26, thus the driven bevel tooth 28 has better stability when transmitting torque.

[0044] In a preferred embodiment, when the hydraulic cylinder telescopic arm 16 is in the retracted state, the center of gravity of the arm end head 14 and the hydraulic telescopic support device 24 are collinear with the axis of the bearing 19. This facilitates rotating the arm end head 14 to orient the hydraulic cylinder telescopic arm 16 upward after the hydraulic telescopic support device 24 is retracted. As a result, the sealing ring at the inner end of the hydraulic cylinder telescopic arm 16 will not rapidly fatigue and fail due to the alternating load formed by the inertial force and negative pressure suction caused by the up-and-down bumps during the operation of the crane.

[0045] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of protection of this invention.

Claims

1. A crane support device, characterized in that: The system includes a support device (11) movably mounted on the side of the crane vehicle. A hydraulic telescopic support device (24) is provided at the end of the support device (11). The hydraulic telescopic support device (24) can rotate relative to the crane (10). In the supported state, the telescopic end of the hydraulic telescopic support device (24) faces downwards, and in the retracted state, the telescopic end of the hydraulic telescopic support device (24) faces upwards. The support device (11) includes a support arm (12), a hollow support arm portion (13), and a support arm end head (14). The hydraulic telescopic support device (24) is fixed inside the support arm end head (14), and the movable part of the hydraulic telescopic support device (24) can telescopically move relative to the support arm end head (14). The support arm end head (14) is rotatably mounted at the end of the hollow support arm portion (13) via a bearing. The hollow support arm portion (13) and the support arm (12) are integrally formed or welded together. The hollow support arm portion (13)... The device is equipped with a locking device to lock the head (14) of the support arm and the hollow support arm; the hydraulic telescopic support device (24) includes a cylinder (15), a cylinder telescopic arm (16), and a pad (17), wherein the cylinder telescopic arm (16) is telescopically disposed inside the cylinder (15), the tail end of the cylinder telescopic arm (16) is provided with a sealing ring, and the pad (17) is hinged to the outer end of the cylinder telescopic arm (16); the hollow support arm (13) The inner welded fixed transverse fixing frame (18) is provided and the bearing (19) is interference fit in the transverse fixing frame (18). The head (14) of the outrigger is provided with a rotating shaft that is interference fit with the inner ring of the bearing (19). When the crane outrigger cylinder is flipped in the non-supported state, the inner end of the cylinder telescopic arm (16) is retracted and abutted against the inside of the cylinder. In this way, the vertical inertia generated during the vehicle's bumpy driving process will not form an alternating load with the negative pressure suction and continuously act on the sealing ring. When the cylinder telescopic arm (16) is in the retracted state, the center of gravity of the arm end head (14) and the hydraulic telescopic support device (24) are collinear with the axis of the bearing (19).

2. A crane support device according to claim 1, characterized in that: The locking device includes a locker (20) and a locking pin (23) fixed to the front end of the locker (20). The locker (20) has a stroke that slides along the axis of the bearing (19), and the locking pin (23) can be inserted into or separated from the locking hole reserved on the end face of the head (14) of the arm during the stroke.

3. A crane support device according to claim 2, characterized in that: The hollow support arm (13) is fixedly provided with slide rails (21) at the top and bottom. The travel direction of the slide rails (21) is parallel to the axis of the bearing (19). The upper and lower walls of the locking device (20) are fixedly provided with sliders (22), and the sliders (22) are slidably disposed in the slide rails (21).

4. A crane support device according to claim 3, characterized in that: The hollow support arm (13) is also provided with a drive screw (25) that rotates within it, and the locking device (20) is provided with a screw hole that is threadedly connected to the drive screw (25). After the drive screw (25) rotates, it drives the locking device (20) to move back and forth along the axis of the bearing (19) through the movement of the helical pair.

5. A crane support device according to claim 4, characterized in that: The device includes a rotating shaft (27), two bearings (26) arranged inside the hollow support arm (13), the rotating shaft (27) and the inner ring of the bearings (26) are interference-fitted, the drive screw (25) is fixedly mounted on one end of the rotating shaft (27), the rotating shaft (27) is also coaxially keyed with a driven bevel tooth (28), the hollow support arm (13) is also provided with a bearing (29) and a right-angle rocker (30) rotatably arranged in the bearing (29), the end of the right-angle rocker (30) is fixed with a driving bevel tooth (31) by a key, and the driving bevel tooth (31) and the driven bevel tooth (28) mesh, the operating end of the right-angle rocker (30) extends out of the hollow support arm (13), and the driven bevel tooth (28) is located between the two bearings (26).

6. A crane, comprising a crane rig (10), characterized in that: It also includes a crane support device as described in any one of claims 1-5 and is movably connected to the crane (10).

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