Inserted air pipe lifting appliance for vertical shaft drilling machine

Abstract

The utility model provides a vertical shaft drilling machine internally inserted air pipe lifting appliance, which comprises a lifting hook frame and a lifting appliance, the lifting hook frame comprises a lifting scaffold and a lifting frame, the lifting appliance comprises a circular top plate attached and connected to the lower surface of the lifting scaffold, an annular plate vertically connected to the lower surface of the circular top plate, and a fork plate vertically connected to the lower end face of the annular plate along the extension direction of the annular plate, the annular plate is provided with a notch allowing the end of the air pipe to enter and exit, the fork plate extends in the horizontal direction, an inner lap joint table protruding out of the inner wall of the annular plate and an outer lap joint table protruding out of the outer wall of the annular plate are formed on the two sides of the fork plate, and when the end of the air pipe enters the annular plate, the inner lap joint table is inserted into a step of the end of the air pipe; the restraint ring capable of moving up and down sleeves the outer side of the lifting appliance, the inner diameter of the restraint ring is larger than the outer diameter of the hanging scaffold, the outer diameter of the circular top plate and the outer diameter of the annular plate, the inner diameter of the restraint ring is smaller than the outer diameter of the outer lap joint table, the restraint ring is moved upwards to expose the notch to move in the air pipe, and the restraint ring is put down to span the notch after moving in, so that the air pipe is prevented from being separated and is vertical; operation is simple and convenient, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft drilling machines, in particular to a shaft drilling machine internally inserted with an air duct hanger. Background Art

[0002] Vertical shaft drilling rig is an important equipment for excavating vertical shafts. It is widely used in vertical shaft construction in coal mines, gold mines, iron mines, lithium mines, infrastructure and other fields. At present, with the country's increasingly higher requirements for safety, energy saving, environmental protection, mechanization, and intelligence, more and more vertical shafts are constructed using gas lift reverse circulation drilling.

[0003] Air lift reverse circulation is achieved by compressing high-pressure air into the mixing chamber of the drill pipe, and driving the mud to float up through the gas to achieve slag removal. Therefore, the drill pipe of this type of vertical shaft drilling rig is mostly a double-layer drill pipe with an inserted air duct. When raising and lowering the drill bit, it is necessary not only to disassemble the outer drill pipe to increase or decrease the drill pipe length, but also to disassemble the inserted air duct to increase or decrease the air duct length (add an extra section or remove an air duct section). Since the upper end of the first section of the double-layer drill pipe needs to be connected to the drive part on the drill frame, it is inconvenient to disassemble and assemble. Usually, the increase or decrease length operation is performed between the first section and the second section. When disassembling and assembling the inserted air duct, a wire rope is usually used to wrap around the step at the end of the inserted air duct for hoisting, or the connecting pin shaft is passed horizontally, and then hoisted by the wire rope. However, this method requires high skills of the construction personnel, a large workload, and it is necessary to repeatedly confirm the reliability of the wire rope winding. After hoisting, the inserted air duct is not vertical, which will increase the difficulty of subsequent increase or decrease length operations, and the construction efficiency is low. Utility Model Content

[0004] The purpose of the utility model is to overcome one or more shortcomings in the prior art and to provide a shaft drilling rig internal air duct hanger which can reduce the difficulty of adding and reducing the length and improve the efficiency of adding and reducing the length.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is that the wind pipe hanger inserted into the vertical shaft drilling rig comprises:

[0006] A hook frame, the hook frame comprising a hanging plate and a door frame-shaped hanging frame vertically connected to the hanging plate;

[0007] A sling, the sling comprising a dome plate attached to and connected to the lower surface of the sling plate, a ring plate vertically connected to the lower surface of the dome plate, and a fork plate vertically connected to the lower end surface of the ring plate along the extension direction of the ring plate, the ring plate is provided with a notch for the end of the air duct to enter and exit, the fork plate extends in the horizontal direction, so that both sides of the fork plate form an inner lap platform protruding from the inner wall of the ring plate and an outer lap platform protruding from the outer wall of the ring plate, and when the end of the air duct enters the ring plate, the inner lap platform is inserted at the step of the end of the air duct;

[0008] The shaft drilling rig internal air duct hanger also includes a constraint ring, which is movably mounted on the outside of the hanger up and down, and the inner diameter of the constraint ring is larger than the outer diameters of the hanging plate, the dome plate and the ring plate, and the inner diameter of the constraint ring is smaller than the outer diameter of the external lap joint.

[0009] Preferably, both sides of the hanger extend upward and outward in an inclined manner, and the outer diameter of the upper end of the hanger is larger than the inner diameter of the restraint ring.

[0010] Preferably, the shaft drilling rig internal air duct hanger also includes a locking bolt for locking the hanging plate and the dome plate, and the locking bolt passes through the center holes of the hanging plate and the dome plate.

[0011] Further preferably, the lower end of the hanger is welded to the upper surface of the hanging plate, and a hook groove extending upward is provided in the middle of the crossbeam of the hanger, and the hook groove is located directly above the locking bolt.

[0012] Preferably, the opening width of the inner overlapping platform is 1.05-1.1 times the outer diameter of the step at the end of the air duct.

[0013] Preferably, the hanging plate is in the shape of a truncated cone with a small top and a large bottom, and the outer diameter of the hanging plate is less than or equal to the outer diameter of the dome plate.

[0014] Preferably, the outer diameter of the ring plate is equal to the outer diameter of the dome plate.

[0015] Further preferably, the inner diameter of the confinement ring is 1.05-1.1 times the outer diameter of the ring plate.

[0016] Further preferably, the dome plate, the ring plate and the fork plate are connected by welding.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] When hoisting the inserted air duct, it is only necessary to move the restraint ring upwards to expose the gap and then move the end of the air duct into the ring plate. When moving in, the inner lap platform is inserted at the step at the end of the air duct, which can conveniently support the air duct. After the air duct is moved in, the restraint ring is lowered, and the restraint ring can fall on the outer lap platform under the action of its own weight, so that a part of the restraint ring lies across the gap, preventing the end of the air duct from detaching outward and making the air duct vertical. The operation is simple and convenient, which can reduce the difficulty of adding and reducing the length of the inserted air duct and improve the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of a preferred embodiment of the utility model.

[0020] Figure 2 , Figure 3 yes Figure 1 A three-dimensional schematic diagram of .

[0021] Figure 4 yes Figure 1 Schematic diagram of the middle hook frame.

[0022] Figure 5 , Figure 6 yes Figure 1 Schematic diagram of the central lifting device.

[0023] Figures 7 to 11 It is a schematic diagram of the process of hoisting the inserted air duct according to the preferred embodiment of the utility model.

[0024] Among them: 10. Hook frame; 11. Lifting plate; 12. Hanger; 121. Hook slot; 20. Lifting device; 21. Dome plate; 22. Ring plate; 221. Notch; 23. Fork plate; 231. Inner lap platform; 232. Outer lap platform; 30. Restraining ring; 40. Locking bolt; 41. Nut; 50. Air duct; 51. Step. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art.

[0026] like Figures 1 to 5 As shown, the utility model provides a shaft drilling machine internal air duct hanger, comprising: a hook frame 10, a hanger 20, and a restraining ring 30, wherein the hook frame 10 comprises a hanging plate 11 and a door frame-shaped hanger 12 vertically connected to the hanging plate 11, the hanging plate 11 is in a headless cone shape with a small top and a large bottom, and a hook groove 121 extending upward is provided in the middle of the crossbeam of the hanger 12; the hanger 20 comprises a dome plate 21 attached to and connected to the lower surface of the hanging plate 11, a ring plate 22 vertically connected to the lower surface of the dome plate 21, and a fork plate 23 vertically connected to the lower end surface of the ring plate 22 along the extension direction of the ring plate 22, and a notch 221 for the end of the air duct 50 to enter and exit is opened on the ring plate 22 The fork plate 23 extends in the horizontal direction, so that the two sides of the fork plate 23 form an inner lap platform 231 protruding from the inner wall of the ring plate 22 and an outer lap platform 232 protruding from the outer wall of the ring plate 22. When the end of the air duct 50 enters the ring plate 22, the inner lap platform 231 is inserted at the step 51 at the end of the air duct 50 to achieve support. Preferably, the opening width of the inner lap platform 231 is 1.05-1.1 times the outer diameter of the step 51 at the end of the air duct 50; the constraint ring 30 can be movably mounted on the outside of the hanger 20 up and down, and the inner diameter of the constraint ring 30 is larger than the outer diameter of the hanging plate 11, the dome plate 21 and the ring plate 22, and the inner diameter of the constraint ring 30 is smaller than the outer diameter of the outer lap platform 232.

[0027] The advantage of such an arrangement is that when hoisting the inserted air duct, the end of the air duct can be moved into the ring plate by simply moving the restraint ring upwards to expose the gap. When moving in, the inner lap platform is inserted at the step at the end of the air duct, which can conveniently support the air duct. After the air duct is moved in, the restraint ring is lowered, and the restraint ring can fall on the outer lap platform under the action of its own weight, so that a part of the restraint ring lies across the gap, thereby preventing the end of the air duct from detaching outward and keeping the air duct vertical. The operation is simple and convenient, which can reduce the difficulty of increasing and decreasing the length of the inserted air duct and improve the working efficiency.

[0028] Preferably, the outer diameter of the hanging plate 11 is smaller than the outer diameter of the dome plate 21, the outer diameter of the ring plate 22 is equal to the outer diameter of the dome plate 21, and the inner diameter of the restraint ring 30 is 1.05-1.1 times the outer diameter of the ring plate. Such a size relationship enables the restraint ring 30 to be placed obliquely on the sling 20 to conveniently expose the notch 221 on the ring plate 22.

[0029] In order to prevent the restraining ring 30 from detaching upward from the hook frame 10 , further, both sides of the hanger 12 extend upward and outward in an inclined manner, and the outer diameter of the upper end of the hanger 12 is greater than the inner diameter of the restraining ring 30 .

[0030] To improve strength, in the present embodiment, the dome plate 21, the ring plate 22, and the fork plate 23 are welded and connected; to facilitate the insertion of the restraint ring 30, in the present embodiment, the shaft drilling rig internal duct hanger also includes a locking bolt 40 for locking the hanging plate 11 and the dome plate 21. The locking bolt 40 passes through the center holes of the hanging plate 11 and the dome plate 21, and is locked by a nut 41. After loosening the nut 41, the locking bolt 40 can be pulled out and the hanging plate 11 and the dome plate 21 can be separated, so that the restraint ring 30 can be inserted from the separation point.

[0031] In this embodiment, the lower end of the hanger 12 is welded to the upper surface of the hanging plate 11 , and the hook groove 121 is located directly above the locking bolt 40 .

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A shaft drilling rig internal air duct hanger, comprising: A hook frame, the hook frame comprising a hanging plate and a door frame-shaped hanging frame vertically connected to the hanging plate; A sling, the sling comprising a dome plate attached to and connected to the lower surface of the sling plate, a ring plate vertically connected to the lower surface of the dome plate, and a fork plate vertically connected to the lower end surface of the ring plate along the extension direction of the ring plate, the ring plate is provided with a notch for the end of the air duct to enter and exit, the fork plate extends in the horizontal direction, so that both sides of the fork plate form an inner lap platform protruding from the inner wall of the ring plate and an outer lap platform protruding from the outer wall of the ring plate, and when the end of the air duct enters the ring plate, the inner lap platform is inserted at the step of the end of the air duct; Features: The shaft drilling rig internal air duct hanger also includes a constraint ring, which is movably mounted on the outside of the hanger up and down, and the inner diameter of the constraint ring is larger than the outer diameters of the hanging plate, the dome plate and the ring plate, and the inner diameter of the constraint ring is smaller than the outer diameter of the external lap joint.

2. The shaft drilling rig internal air duct hanger according to claim 1, characterized in that: Both sides of the hanger extend upward and outward in an inclined manner, and the outer diameter of the upper end of the hanger is greater than the inner diameter of the restraint ring.

3. The shaft drilling rig internal air duct hanger according to claim 1, characterized in that: The shaft drilling rig internal air duct hanger also includes a locking bolt for locking the hanging plate and the dome plate, and the locking bolt passes through the center holes of the hanging plate and the dome plate.

4. The shaft drilling machine internal air duct hanger according to claim 3, characterized in that: The lower end of the hanger is welded to the upper surface of the hanging plate, and a hook groove extending upward is provided in the middle of the crossbeam of the hanger, and the hook groove is located directly above the locking bolt.

5. The shaft drilling rig internal air duct hanger according to claim 1, characterized in that: The opening width of the inner lap joint is 1.05-1.1 times the outer diameter of the step at the end of the air duct.

6. The shaft drilling rig internal air duct hanger according to claim 1, characterized in that: The hanging plate is in the shape of a truncated cone with a small top and a large bottom, and the outer diameter of the hanging plate is less than or equal to the outer diameter of the dome plate.

7. The shaft drilling machine internal air duct hanger according to claim 1, characterized in that: The outer diameter of the ring plate is equal to the outer diameter of the dome plate.

8. The shaft drilling machine internal air duct hanger according to claim 7, characterized in that: The inner diameter of the confinement ring is 1.05-1.1 times the outer diameter of the ring plate.

9. The shaft drilling machine internal air duct hanger according to claim 7, characterized in that: The dome plate, the ring plate and the fork plate are connected by welding.

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