A telescopic device for a medium-sized crane hoisting system

Abstract

The utility model discloses a telescopic device for medium-sized crane hoisting system, including transport crane, be connected with a pair of vertical arm telescopic ware oil cylinder on transport crane, the telescopic end of vertical arm telescopic ware oil cylinder is connected with vertical arm telescopic ware, and the outside of vertical arm telescopic ware and the bottom end of transport crane are all counterweighted with hydraulic support leg, the top of vertical arm telescopic ware is installed with rotating mechanism, the telescopic mechanism is installed on rotating mechanism, the utility model relates to crane technical field, and this telescopic device can flexibly adjust the height and angle of the hoist telescopic arm through the mutual cooperation of vertical arm telescopic ware oil cylinder, hoist telescopic arm oil cylinder, planetary reducer and included angle degree adjusting controller etc. structure, makes the hoist telescopic arm adapt to different hoisting scene and height demand, can let bucket formula rotator can drive hoist telescopic arm to complete free rotation simultaneously, need not frequently moving crane, effectively solved the limitation of present device in single horizontal plane adjustment.

Description

Technical Field

[0001] This invention relates to the field of lifting equipment technology, specifically to a telescopic device for a medium-sized crane lifting system. Background Technology

[0002] A crane, also known as a hoist, is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. In bridge construction projects, lifting machinery can generally be divided into four main categories based on its structure and performance: light and small lifting equipment, bridge-type cranes, boom-type cranes, and cable cranes. Some lifting equipment operates intermittently, meaning that the corresponding mechanisms for material handling, transport, and unloading work alternately within a work cycle. Cranes are becoming increasingly widespread in the market.

[0003] However, most telescopic devices used in existing medium-sized crane lifting systems can only achieve a certain range of angle adjustment on a single horizontal plane, and cannot achieve free rotation of the entire structure. Due to this limitation, in actual operation, the operator must frequently control the movement of the crane itself to adjust the working direction of the telescopic device. This operation method is not only cumbersome, significantly increasing the workload and complexity of the operator, but also causes work interruptions due to frequent starts, stops, and position adjustments, thereby reducing the overall efficiency of the lifting system. Furthermore, in situations where construction site space is limited or site conditions are restricted, crane movement is severely restricted, making it difficult to achieve flexible and precise adjustment of the telescopic device's direction through vehicle relocation. This deficiency further limits the adaptability and practicality of the crane, easily causing poor coordination between construction stages and even slowing down the overall project progress. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a telescopic device for a medium-sized crane lifting system, which solves the problem that existing telescopic devices used in medium-sized crane lifting systems cannot achieve free rotation of the overall structure and result in poor coordination between construction stages.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a telescopic device for a medium-sized crane lifting system, comprising a transport crane, wherein a pair of boom telescopic cylinders are connected to the transport crane, the telescopic ends of the boom telescopic cylinders are connected to boom telescopic devices, and hydraulic outriggers are counterweighted on the outer side of the boom telescopic device and the bottom end of the transport crane, a rotating mechanism is installed at the top of the boom telescopic device, and a telescopic mechanism is installed on the rotating mechanism; The rotating mechanism includes a shaft connector and a barrel-type rotator connected to the top of the boom telescopic unit. The barrel-type rotator is connected to the boom telescopic unit's shaft, and a turntable bearing and a radial bearing are fitted onto the boom telescopic unit's shaft. The front end face of the barrel-type rotator is rotatably connected to an angle adjustment controller via an angle adjustment control shaft. A flange is fixedly connected to the top of the barrel-type rotator, and a planetary reducer is connected to the bottom of the flange. A driver is connected to the input end of the planetary reducer, and the output end of the planetary reducer is connected to the shaft connector. A lifting telescopic arm is fixedly connected to the top of the angle adjustment controller, and a connecting assembly is installed below the lifting telescopic arm.

[0006] Preferably, the connecting assembly includes a telescopic boom cylinder and a counterweight beam control cylinder, which are respectively connected to both ends of the bucket rotator. The telescopic end of the telescopic boom cylinder is slidably connected to the telescopic boom. The telescopic end of the counterweight beam control cylinder is connected to a 1:8 counterweight beam. One end of the 1:8 counterweight beam is connected to a bucket rotator oil cap, which is sleeved on the shaft head of the boom telescopic device. The other end of the 1:8 counterweight beam is connected to a counterweight block. A balance rope is connected between the 1:8 counterweight beam and the telescopic boom.

[0007] Preferably, the telescopic mechanism includes needle roller bearings and a rope controller disposed inside and on the outer wall of each telescopic rod of the telescopic boom. A pair of winches are fixedly connected to the outer side of the top of the telescopic boom, and the winches are connected to the rope controller via wire ropes. The rope controller controls the direction of travel of the wire ropes.

[0008] Preferably, a hook monitoring camera is fixedly connected to the bottom end of the telescopic boom.

[0009] Preferably, a pair of hooks are provided below the telescopic head end of the lifting boom, and the hooks are connected to the wire rope of the winch.

[0010] Preferably, an overload sensor alarm, a ground-based laser torque meter, and a monitoring camera are fixedly connected to the front of the telescopic head of the telescopic boom.

[0011] Preferably, a hook is fixed to the rear of the telescopic head end of the telescopic boom and to the laser rangefinder camera of the boom telescopic device.

[0012] Beneficial effects This invention provides a telescopic device for a medium-sized crane lifting system, which has the following advantages: This telescopic device, through the coordinated operation of the boom telescopic cylinder, the lifting boom telescopic cylinder, the planetary reducer, and the clamp angle adjustment controller, can flexibly adjust the height and angle of the lifting boom, allowing it to adapt to different lifting scenarios and height requirements. At the same time, it allows the barrel rotator to drive the lifting boom to rotate freely without frequent crane movement, effectively solving the limitation of existing devices that can only adjust on a single horizontal plane. The clamp angle adjustment controller, in conjunction with the clamp angle adjustment control shaft, can precisely adjust the clamp angle of the lifting boom according to actual needs, thus improving the flexibility and accuracy of operation and better handling complex working conditions. The needle roller bearings and rope controller in the telescopic mechanism, together with the winch and wire rope, enable the smooth and stable extension and retraction of each telescopic rod of the boom. The hook and object monitoring camera monitors the status of the hook and the lifted object in real time, allowing operators to keep track of the situation and handle abnormalities in a timely manner. The overload alarm and ground laser rangefinder further enhance the reliability of the device. The overload alarm can promptly sound an alarm when the lifted weight exceeds the safe range, and the ground laser rangefinder can measure the distance between the boom and the ground to avoid collision accidents, thus making the overall safety of the device higher. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a diagram showing the usage state of the present invention.

[0015] Figure 3 For the present invention Figure 2 A magnified view of a portion of the image.

[0016] Figure 4 For the present invention Figure 2 A magnified view of a portion of the image.

[0017] Figure 5 For the present invention Figure 1 Top view of the hydraulic outrigger.

[0018] In the diagram: 1. Transport crane; 2. Boom telescopic cylinder; 3. Boom telescopic device; 4. Shaft connector; 5. Boom telescopic device shaft; 6. Bucket rotator; 7. Angle adjustment controller; 8. Angle adjustment control shaft; 9. Lifting telescopic boom cylinder; 10. Lifting telescopic boom; 11. Hook; 12. Turntable bearing; 13. Planetary reducer; 14. Flange; 15. Radial bearing; 16. Balance rope; 17. Counterweight beam control cylinder; 18. Counterweight block; 19. 1:8 counterweight beam; 20. Bucket rotator oil cap; 21. Winch; 22. Hook object monitoring camera; 23. Rope controller; 24. Needle roller bearing; 25. Overload alarm; 26. Hook to ground laser rangefinder and monitoring camera; 27. Hook to boom telescopic device laser rangefinder camera; 28. Hydraulic outrigger. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-5 The present invention provides a technical solution: a telescopic device for a medium-sized crane lifting system, including a transport crane 1, a pair of boom telescopic cylinders 2 connected to the transport crane 1, boom telescopic cylinders 3 connected to the telescopic ends of the boom telescopic cylinders 2, and hydraulic outriggers 28 counterweighted on the outer side of the boom telescopic cylinders 3 and the bottom end of the transport crane 1, and a rotating mechanism installed at the top of the boom telescopic cylinders 3, and a telescopic mechanism installed on the rotating mechanism; The rotating mechanism includes a shaft connector 4 connected to the top of the boom telescopic device 3 and a barrel-type rotator 6. The barrel-type rotator 6 is connected to the boom telescopic device shaft 5. A turntable bearing 12 and a radial bearing 15 are sleeved on the boom telescopic device shaft 5. The front end face of the barrel-type rotator 6 is rotatably connected to the angle adjustment controller 7 via the angle adjustment control shaft 8. A flange 14 is fixedly connected to the top of the barrel-type rotator 6, and a planetary reducer 13 is connected to the bottom of the flange 14. A driver is connected to the input end of the planetary reducer 13, and the output end of the planetary reducer 13 is connected to the shaft connector 4. A lifting telescopic arm 10 is fixedly connected to the top of the angle adjustment controller 7, and a connecting component is installed below the lifting telescopic arm 10. Hydraulic outriggers 28 are counterweighted on both the outer side of the boom telescopic joint 3 and the bottom of the transport crane 1. Two sets are installed on the outer side of the boom telescopic joint 3 in a V-shape, and four sets are installed at the bottom of the transport crane 1. Each hydraulic outrigger 28 is composed of a stabilizing beam, hydraulic rods, and outriggers. The stabilizing beams of the four sets of hydraulic outriggers 28 at the bottom of the transport crane 1 have lengths of 8%, 10%, 12%, and 15% of the length of the boom telescopic joint 3, respectively. The hydraulic outriggers 28 installed on the outer side of the boom telescopic joint 3 have a length of 15% of the length of the boom telescopic joint 3. This design ensures greater overall stability during support. The lifting boom 10 is designed to be horizontal for material handling when the angle is 90 degrees, and vertical for material handling when the angle is 150 degrees. The lower end of the boom extension 3 is connected to the hydraulic outrigger 28 at the tail end of the transport crane 1, and the position where the lower end of the boom extension 3 is connected to the hydraulic outrigger 28 at the tail end of the transport crane 1 bears the greatest force. The transport crane 1 can be a vehicle-mounted telescopic crane, with a lifting capacity of 50 tons to 500 tons as required, a lifting height of 20 meters to 150 meters as required, 6 to 12 bridges, and four cables per layer for heights exceeding 100 meters.

[0021] The components include a transport crane 1, a boom telescopic cylinder 2, a boom telescopic device 3, a shaft connector 4, a boom telescopic device shaft 5, a barrel rotator 6, a clamp angle adjustment controller 7, a clamp angle adjustment control shaft 8, a lifting telescopic boom cylinder 9, and a lifting telescopic boom 10, all interconnected. A planetary reducer 13 is connected to a turntable 14. A turntable bearing 12 and a radial bearing 156 are mounted on the boom telescopic device shaft 5. There are two types of drives: hydraulic drive, which offers high torque and fine-tuning precision, and electric motor drive, which offers low torque and poor fine-tuning precision. The choice depends on the specific circumstances.

[0022] In this embodiment, the connecting assembly includes a telescopic boom cylinder 9 and a counterweight beam control cylinder 17, which are respectively connected to both ends of the bucket rotator 6. The telescopic end of the telescopic boom cylinder 9 is slidably connected to the telescopic boom 10. The telescopic end of the counterweight beam control cylinder 17 is connected to a 1:8 counterweight beam 19. One end of the 1:8 counterweight beam 19 is connected to a bucket rotator oil cover 20, and the bucket rotator oil cover 20 is sleeved on the shaft head 5 of the boom telescopic device. The other end of the 1:8 counterweight beam 19 is connected to a counterweight block 18. A balance rope 16 is connected between the 1:8 counterweight beam 19 and the telescopic boom 10. The 1:8 counterweight beam 19 can first determine its position through the counterweight beam control cylinder 17, and then connect to the oil cover 20 of the barrel rotator by means of threaded connection. At the same time, a counterweight block 18 is installed on the 1:8 counterweight beam 19, so that the telescopic boom 10 of the hoisting object is more stable when it moves.

[0023] Among them, the balance rope 16, the counterweight beam control cylinder 14, the counterweight block 18 and the 1:8 counterweight beam 19 are interconnected.

[0024] In this embodiment, the telescopic mechanism is further configured to include needle roller bearings 24 and rope controllers 23 disposed inside and on the outer wall of each telescopic rod of the telescopic arm 10. A pair of winches 21 are fixedly connected to the outer side of the top end of the telescopic arm 10, and the winches 21 are connected to the rope controllers 23 through wire ropes. The rope controllers 23 control the direction of travel of the wire ropes. The rope controller 23, in conjunction with the winch 21, can realize the extension and retraction of the telescopic boom 10. The supporting electrical equipment is existing technology and can be fully implemented by those skilled in the art, so it will not be described in detail.

[0025] In this embodiment, the bottom end of the telescopic arm 10 is fixedly connected to a hook object monitoring camera 22; The hook object monitoring camera 22 can monitor the status of the object being lifted by the hook 11 in real time, ensuring the safety of the lifting process.

[0026] In this embodiment, a pair of hooks 11 are provided below the telescopic head end of the telescopic boom 10, and the hooks 11 are connected to the wire rope of the winch 21.

[0027] In this embodiment, an overload sensor alarm 25, a ground-based laser moment meter, and a monitoring camera 26 are fixedly connected to the front of the telescopic head of the telescopic boom 10. When the weight of the suspended object exceeds the set value, the overload sensor alarm 25 will sound an alarm to remind the operator to pay attention. The ground laser torque meter and monitoring camera 26 can measure the distance between the telescopic boom 10 and the ground in real time and provide monitoring images to provide the operator with accurate position information for precise operation.

[0028] In this embodiment, the telescopic boom 10 is further configured such that a hook is fixedly connected to the laser rangefinder camera 27 of the boom telescopic device at the rear of the telescopic head end; By adding a laser rangefinder and a camera, the distance and condition of the boom extension 3 can be monitored.

[0029] It is worth noting that all standard parts used in this invention can be purchased commercially, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The models of electrical structures and equipment involved can be selected according to the user's needs, as long as they meet the requirements of this application. Furthermore, the circuit connections adopt conventional connection methods in the prior art. The supporting electrical structures for control, current detection, position feedback, predicted voltage synchronization, and parameter adjustment of the electrical equipment are all existing technologies, such as PLC controllers and module structures, and therefore will not be described in detail here. All content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0030] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0031] This invention discloses a unique multi-functional vehicle-mounted telescopic crane, comprising: a transport crane 1, with four sets of counterweight-stabilized hydraulic outriggers 28 on both sides of the bottom of the transport crane 1; a boom telescopic device 3; boom telescopic device cylinders 2; the boom telescopic device cylinders 2 and 2 are connected and fixed to the rear of the transport crane 1; two sets of counterweight-stabilized hydraulic outriggers 28 on each side of the bottom of the boom telescopic device 3, one of which is in a V-shape; a shaft connector 4 for the boom telescopic device 3; a shaft connector 5 for the boom telescopic device 3; a clamp angle adjustment controller 7 connected to a clamp angle adjustment control shaft 8; a clamp angle adjustment controller 7 connected to a lifting boom telescopic arm 10; a lifting boom telescopic arm cylinder 9 connected to the lower end of the barrel rotator 6; a lifting boom telescopic arm cylinder 9 connected to the upper end of the lifting boom telescopic arm 10; two hooks 11; a turntable bearing 12; a planetary reducer 13; a flange 14; and a radial bearing 15. 16. Balance rope. 17. Counterweight beam control cylinder. 18. Counterweight block. 19. 1:8 counterweight beam. 20. Bucket-type rotator oil cap. 21. Two winches for positive and negative structures. 22. Monitoring camera for suspended objects. 23. Rope controller. 24. Needle roller bearing. 25. Overload alarm. 26. Hook to ground laser torque meter and monitoring camera. 27. Hook to boom extension arm laser torque meter and camera. 10. The boom extension arm is 90 degrees horizontal for transporting materials, 150 degrees vertical for transporting materials, and rotates 360 degrees for transporting materials.

[0032] Example: When this device is needed, the components can be assembled according to the diagram, ensuring bolts are tightened and welds are secure. Then, the circuit and control devices are connected. After checking that all interfaces are correct, a power-on test is conducted to ensure that current detection, position feedback, and other functions are normal. The control devices are then installed in appropriate positions. Hydraulic outriggers 28 are counterweighted on the outside of the boom telescopic member 3 and at the bottom of the transport crane 1. Two sets are installed on the outside of the boom telescopic member 3 in a V-shape, and four sets are installed at the bottom of the transport crane 1. The hydraulic outriggers 28 are composed of a stabilizing beam, hydraulic rods, and outriggers. The stabilizing beam lengths of the four sets of hydraulic outriggers 28 at the bottom of the transport crane 1 are 8%, 10%, 12%, and 15% of the length of the boom telescopic member 3, respectively. The hydraulic outriggers 28 on the outside of the boom telescopic member 3 are 15% of the length of the boom telescopic member 3. This provides greater overall stability during support. When lifting operations are required, the boom telescopic member cylinder 2 and other components can be used for control. The boom extension 3 rotates to adjust the angle of its extension end. Then, the boom cylinder 9 is activated, which pushes the boom 10. At this time, the boom 10 drives the angle adjustment controller 7 to rotate at the angle adjustment control shaft 8, thereby adjusting the angle of the boom 10. Simultaneously, when the boom 10 is extending or retracting, the winch 21, in cooperation with the wire rope and rope controller 23, uses the rolling action of the needle roller bearing 24 to allow each extension rod of the boom 10 to extend and retract smoothly, enabling lifting operations at different horizontal positions. The hook object monitoring camera 22 can monitor the object being lifted by the hook 11 in real time to ensure the safety of the lifting process. When the weight of the object exceeds the set value, the overload alarm 25 will sound an alarm to remind the operator. The ground laser rangefinder 26 can measure the distance between the boom 10 and the ground in real time, providing the operator with accurate position information for precise operation. When it is necessary to rotate the telescopic boom 10, the motor can drive the planetary reducer 13 to work. At this time, the planetary reducer 13 can drive the flange 14 to rotate through the reaction force of the shaft connector 4. In this way, the flange 14 can rotate around the turntable bearing 12 through the barrel rotator 6, etc., to achieve a wider range of adjustment. This eliminates the need to frequently move the crane itself to adjust the working direction, thereby improving work efficiency and making it more suitable for situations where the construction site space is small or the site conditions are limited.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic device for a medium-sized crane lifting system, comprising a transport crane (1), characterized in that: The transport crane (1) is connected to a pair of boom telescopic cylinders (2), the telescopic end of the boom telescopic cylinders (2) is connected to a boom telescopic device (3), and the outer side of the boom telescopic device (3) and the bottom of the transport crane (1) are both equipped with hydraulic outriggers (28). The top of the boom telescopic device (3) is equipped with a rotating mechanism, and the rotating mechanism is equipped with a telescopic mechanism. The rotating mechanism includes a shaft head connector (4) and a barrel rotator (6) connected to the top of the boom telescopic device (3). The barrel rotator (6) is connected to the boom telescopic device shaft head (5). A turntable bearing (12) and a radial bearing (15) are sleeved on the boom telescopic device shaft head (5). The front end face of the barrel rotator (6) is rotatably connected to the angle adjustment controller (7) via the angle adjustment control shaft (8). A flange (14) is fixedly connected to the top of the barrel rotator (6), and a planetary reducer (13) is connected to the bottom of the flange (14). A driver is connected to the input end of the planetary reducer (13), and the output end of the planetary reducer (13) is connected to the shaft head connector (4). A lifting telescopic arm (10) is fixedly connected to the top of the angle adjustment controller (7), and a connecting component is installed below the lifting telescopic arm (10).

2. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, The connecting assembly includes a telescopic boom cylinder (9) and a counterweight beam control cylinder (17) connected to both ends of the bucket rotator (6). The telescopic end of the telescopic boom cylinder (9) is slidably connected to the telescopic boom (10). The telescopic end of the counterweight beam control cylinder (17) is connected to a 1:8 counterweight beam (19). One end of the 1:8 counterweight beam (19) is connected to a bucket rotator oil cap (20), and the bucket rotator oil cap (20) is sleeved on the shaft head (5) of the boom telescopic device. The other end of the 1:8 counterweight beam (19) is connected to a counterweight block (18). A balance rope (16) is connected between the 1:8 counterweight beam (19) and the telescopic boom (10).

3. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, The telescopic mechanism includes needle roller bearings (24) and rope controllers (23) installed inside and on the outer wall of each telescopic rod of the telescopic boom (10). A pair of winches (21) are fixed to the outer side of the top of the telescopic boom (10), and the winches (21) are connected to the rope controllers (23) through wire ropes. The rope controllers (23) control the direction of travel of the wire ropes.

4. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, The bottom end of the telescopic boom (10) is fixed with a hook object monitoring camera (22).

5. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, A pair of hooks (11) are provided below the telescopic head end of the telescopic boom (10), and the hooks (11) are connected to the wire rope of the winch (21).

6. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, An overload sensor alarm (25) and a ground-based laser moment meter and a monitoring camera (26) are fixedly connected to the front of the telescopic head end of the telescopic boom (10).

7. The telescopic device for a medium-sized crane lifting system according to claim 1, characterized in that, The telescopic boom (10) has a hook fixed to the rear of the telescopic head end of the boom extension device laser rangefinder camera (27).

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