Downhole folding arm crane

Abstract

The utility model discloses a folding arm crane used under a well. The folding-arm crane used underground comprises a moving trolley, first hydraulic supporting legs are arranged at the four corners of the moving trolley, a roof-contacted hydraulic supporting leg is arranged on one side of the top of the moving trolley, a rotary support is arranged on the other side of the top of the moving trolley, a rotary support is arranged on the top of the rotary support, and a foldable hanging bracket is arranged on the top of the rotary support. The utility model solves the problems in the prior art that the hoisting amplitude cannot be adjusted, collision is easy to occur in a narrow roadway, and larger potential safety hazard exists.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a folding boom crane for use underground. Background Technology

[0002] A Chinese invention patent application with publication number CN103101845A, entitled "An Underground Rail-Changing Hydraulic Crane," describes an underground rail-changing hydraulic crane comprising a rectangular flatbed frame with a hydraulic lifting frame located in the center of the top of the frame. This hydraulic lifting frame is used to install and retract fully mechanized mining equipment underground. However, the hydraulic lifting frame disclosed in this application cannot change its shape during operation, making it prone to collisions in narrow tunnels and posing a significant safety hazard. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a folding boom crane for underground use that can adjust its shape according to the working environment, thereby improving safety.

[0004] To achieve the above objectives, the technical solution adopted by the present invention for the folding boom crane used underground is as follows:

[0005] A folding boom crane for underground use includes a mobile vehicle, with first hydraulic outriggers at the four corners of the mobile vehicle, a top-mounted hydraulic outrigger on one side of the top of the mobile vehicle, a slewing bearing on the other side of the top of the mobile vehicle, a slewing support on the top of the slewing bearing, and a foldable hanger on the top of the slewing support.

[0006] Preferably, the foldable hanger includes a primary boom, one end of which is hinged to a slewing support via a shaft one, and the other end of which is hinged to a secondary boom via a shaft two. A lifting device is provided at the free end of the secondary boom. A first hydraulic cylinder is provided between the side of the primary boom adjacent to the shaft two and the slewing support, and a second hydraulic cylinder is provided between the side of the primary boom adjacent to the shaft one and the secondary boom.

[0007] Preferably, obstacle avoidance radar is provided at the free end of the secondary boom and around the perimeter of the mobile vehicle.

[0008] Preferably, the secondary boom is a telescopic boom.

[0009] Preferably, the lifting device includes a hydraulic winch and a fixed pulley. The hydraulic winch is installed on the outer wall of the telescopic boom, and the fixed pulley is installed at the telescopic end of the telescopic boom. A wire rope or chain link with a hook at one end is threaded between the hydraulic winch and the fixed pulley. Alternatively, the lifting device may consist solely of a hook installed at the telescopic end of the telescopic boom.

[0010] Preferably, the mobile vehicle is provided with a third hydraulic cylinder on the opposite side of the top hydraulic outrigger, and the telescopic end of the third hydraulic cylinder is provided with a second hydraulic outrigger.

[0011] Preferably, the cylinder of the top-mounted hydraulic outrigger is hinged to the mobile vehicle, and a fourth hydraulic cylinder is provided between the cylinder of the top-mounted hydraulic outrigger and the mobile vehicle.

[0012] Preferably, the mobile vehicle is a tracked mobile vehicle.

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] After the mobile vehicle travels to the designated position, it uses the first hydraulic outrigger to contact the roadway ground to ensure stability. If the ground is sloped, the top hydraulic outrigger then contacts the roadway roof to enhance stability. The foldable gantry is then used to lift the items. During the lifting process, the shape of the foldable gantry can be adjusted according to the roadway environment to avoid collisions and ensure safe operation. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the folding boom crane used underground according to this utility model.

[0016] Figure 2 yes Figure 1 Top view.

[0017] Among them, 1 is the mobile vehicle, 2 is the first hydraulic outrigger, 3 is the top-mounted hydraulic outrigger, 4 is the fourth hydraulic cylinder, 5 is the slewing support, 6 is the slewing bearing, 7 is the foldable hanger, 71 is the first-stage boom, 72 is the first shaft, 73 is the second shaft, 74 is the second-stage boom, 75 is the lifting device, 751 is the hydraulic winch, 752 is the fixed pulley, 76 is the first hydraulic cylinder, 77 is the second hydraulic cylinder, 8 is the third hydraulic cylinder, and 9 is the second hydraulic outrigger. Detailed Implementation

[0018] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0019] like Figure 1-2As shown, a folding boom crane for underground use includes a mobile vehicle 1, which is a tracked mobile vehicle. Tracked mobile vehicles offer advantages such as good maneuverability, stability, load-bearing capacity, and minimal environmental impact, making them suitable for underground operations characterized by narrow spaces, slippery surfaces, and various slopes and obstacles. First hydraulic outriggers 2 are installed at the four corners of the tracked mobile vehicle, mounted on the left and right side walls. The outriggers can be flexibly adjusted in extension length and position to adapt to confined spaces and improve stability. A top-mounted hydraulic outrigger 3 is hinged to the rear of the top of the tracked mobile vehicle. The cylinder of the top-mounted hydraulic outrigger is hinged to the mobile vehicle. A fourth hydraulic cylinder 4 is installed between the cylinder of the outrigger and the moving vehicle. The cylinder body of the fourth hydraulic cylinder is hinged to the tracked moving vehicle, and the telescopic rod of the fourth hydraulic cylinder is hinged to the cylinder of the top-mounted hydraulic outrigger. It is used to extend and retract the top-mounted hydraulic outrigger. When the roadway surface has a slope, the top-mounted hydraulic outrigger works in conjunction with the first hydraulic outrigger to enhance the stability of the tracked moving vehicle. A slewing bearing 5 is installed on the front side of the top of the tracked moving vehicle. A slewing support 6 is installed on the top of the slewing bearing. A foldable hanger 7 is installed on the top of the slewing support. The foldable hanger includes a primary boom 71. The front end of the primary boom is hinged to the slewing support via shaft 1 72, and the rear end of the primary boom is hinged to a secondary boom 74 via shaft 2 73. The secondary boom is a telescopic boom. The boom extends the working distance and improves work efficiency. Obstacle avoidance radar is installed at the telescopic end of the boom and around the tracked mobile vehicle. The obstacle avoidance radar can perceive the surrounding environment of the tracked mobile vehicle and the telescopic end of the boom in real time, provide early warning to avoid collisions, improve safety, and provide a foundation for unmanned operation. A lifting device 75 is installed at the free end of the boom. The lifting device includes a hydraulic winch 751 and a fixed pulley 752. The hydraulic winch is installed on the outer wall of the boom cylinder, and the fixed pulley is installed at the telescopic end of the boom. A chain link with a hook at the end is threaded between the hydraulic winch and the fixed pulley. Two first hydraulic cylinders 76 are installed between the first boom and the slewing support on the side of the first boom adjacent to the second shaft. The first hydraulic cylinder is located on the left and right sides of the slewing bearing. The cylinder body of the first hydraulic cylinder is hinged to the front side of the slewing bearing, and the telescopic rod of the first hydraulic cylinder is hinged to the rear side of the first-stage boom. A second hydraulic cylinder 77 is installed between the first-stage boom and the telescopic boom on the side of the first-stage boom adjacent to the first shaft. There is one second hydraulic cylinder. The cylinder body of the second hydraulic cylinder is hinged to the front side of the first-stage boom, and the telescopic rod of the second hydraulic cylinder is hinged to the side of the telescopic boom adjacent to the second shaft. A third hydraulic cylinder 8 is installed on the opposite side of the tracked mobile vehicle to the top hydraulic outrigger. A second hydraulic outrigger 9 is installed at the telescopic end of the third hydraulic cylinder. The second hydraulic outrigger is extended to the front side of the tracked mobile vehicle through the third hydraulic cylinder to increase the ground contact area of ​​the tracked mobile vehicle and further improve stability.

[0020] It should be noted that the foldable hanger disclosed in this embodiment is only a two-fold structure. In addition, the foldable hanger can also be a three-fold or four-fold structure. The more arms (arms) the foldable hanger has, the higher its flexibility.

[0021] The specific working process and principle of this utility model are as follows: After the tracked mobile vehicle travels to the set position in the tunnel, preparatory work is performed. The hook is turned to the side of the object by the slewing support. The third hydraulic cylinder is activated to send the second hydraulic outrigger to the vicinity of the object to be lifted. The first and second hydraulic outriggers contact the tunnel floor, lifting the tracked mobile vehicle off the ground. If there is a certain slope at the set position, the fourth hydraulic cylinder needs to be activated. The fourth hydraulic cylinder drives the top hydraulic outrigger to rotate upward and then activates the top hydraulic outrigger, which contacts the tunnel ceiling. The top hydraulic outrigger, together with the first and second hydraulic outriggers, ensures that the tracked mobile vehicle is in a stable state, improving operational safety. After the preparatory work is completed, the lifting operation can begin. During lifting, the first and second hydraulic cylinders can cooperate to adjust the amplitude of the telescopic boom, allowing the object to be lifted in a low and flat posture, thus avoiding collision with the tunnel wall or other equipment and ensuring safe operation. In addition, by extending the second hydraulic outrigger, the tracked mobile vehicle can reduce or even eliminate the need for counterweights, thereby reducing energy consumption during operation. This invention also combines a foldable hoist and a hydraulic winch, making it more flexible, convenient, and quick to use, adapting to the complex working environment underground, and greatly improving the efficiency of underground hoisting operations.

Claims

1. A knuckleboom loader for use downhole, characterized by: The mobile vehicle is provided with first hydraulic legs at four corners, a top hydraulic leg at one side of the top of the mobile vehicle, a rotary support at the other side of the top of the mobile vehicle, a rotary seat at the top of the rotary support, and a foldable crane at the top of the rotary seat.

2. A knuckleboom loader for use downhole as set forth in claim 1, characterized in that: The foldable crane comprises a first-stage lifting arm, one end of which is hinged to the rotary seat through a shaft one, and the other end of which is hinged to a second-stage lifting arm through a shaft two, the free end of the second-stage lifting arm being provided with a lifting tool, a first oil cylinder being arranged between the side of the first-stage lifting arm close to the shaft two and the rotary seat, and a second oil cylinder being arranged between the side of the first-stage lifting arm close to the shaft one and the second-stage lifting arm.

3. The knuckleboom loader for use downhole of claim 2, characterized by: The free end of the second-stage lifting arm and the periphery of the mobile vehicle are provided with obstacle avoidance radars.

4. A knuckleboom loader for use downhole as set forth in claim 3, characterized in that: The second-stage lifting arm is a telescopic arm.

5. The knuckleboom loader for use downhole as set forth in claim 2, characterized by: The lifting tool comprises a hydraulic winch and a fixed pulley, the hydraulic winch being mounted on the outer wall of the cylinder of the telescopic arm, the fixed pulley being mounted on the telescopic end of the telescopic arm, and a steel wire rope or a chain ring with a lifting hook being threaded between the hydraulic winch and the fixed pulley.

6. The knuckleboom loader for use downhole as claimed in claim 1, characterized by: The mobile vehicle is provided with a third oil cylinder at the opposite side of the top hydraulic leg, the telescopic end of the third oil cylinder being provided with a second hydraulic leg.

7. The knuckleboom loader for use downhole as claimed in claim 1, characterized by: The cylinder of the top hydraulic leg is hinged to the mobile vehicle, and a fourth oil cylinder is arranged between the cylinder of the top hydraulic leg and the mobile vehicle.

8. The knuckleboom loader for use downhole as claimed in claim 1, characterized by: The mobile vehicle is a tracked mobile vehicle.

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