Automatic descent type anti-falling lifting device

Abstract

The present application relates to the technical field of lifting device, and discloses an automatic lowering anti-falling lifting device, which solves the problem that the lifting device cannot realize the double functions of anti-falling and automatic lowering of the drilling tool during lifting of the drilling tool, and comprises a lifting ring and a lifting device body, the bottom end of the lifting ring is provided with the lifting device body, the bottom end of the lifting device body is provided with an opening, the inner top end of the lifting ring is provided with a fixed frame, the two sides of the fixed frame are provided with base plates located at the bottom end of the lifting ring, the base plates are provided with bolts one connected with the lifting ring and the lifting device body, the two top ends of the lifting device body are symmetrically provided with fixed plates, the outer walls of the fixed plates are provided with connecting seats located at the side walls of the lifting ring and the lifting device body, the connecting seats are provided with bolts two connected with the lifting ring and the lifting device body, and the bottom end of the lifting device body is provided with a bottom plate penetrating into the opening.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of lifting device, and particularly relates to an automatic lowering and anti-falling lifting device. BACKGROUND

[0002] The lifting device is a tool used for lifting drilling tools (mainly drill pipes) during the construction process of a drilling machine. According to different lifting methods, the lifting device is divided into a slip ring type lifting device, a hand winding type lifting device and an inclined type lifting device, etc. The hand-operated lifting device represented by the slip ring type lifting device is relatively mature, but the worker needs to dismount and mount the lifting device when the lifting device is separated from the drilling tool during the lifting process, which inevitably requires the worker to climb to the tower for operation. However, the inclined type lifting device can automatically separate from the drilling tool on the tower, but the drilling tool is prone to falling, thereby causing a safety hazard. SUMMARY

[0003] In view of the above problems, the present application provides an automatic lowering and anti-falling lifting device to effectively solve the problem that the lifting device cannot simultaneously realize the functions of anti-falling of the drilling tool and automatic lowering of the drilling tool during the lifting process of the drilling tool.

[0004] To achieve the above purpose, the present application provides the following technical scheme: an automatic lowering and anti-falling lifting device, comprising a lifting ring and a lifting device body, the bottom end of the lifting ring is provided with the lifting device body, the bottom end of the lifting device body is provided with an opening, the inner top end of the lifting ring is provided with a fixed frame, the two sides of the fixed frame are provided with base plates located at the bottom end of the lifting ring, the base plates are provided with bolts one connected with the lifting ring and the lifting device body, the two top ends of the lifting device body are symmetrically provided with fixed plates, the outer wall of the fixed plate is provided with connecting seats located at the side walls of the lifting ring and the lifting device body, the connecting seats are provided with bolts two connected with the lifting ring and the lifting device body, the bottom end of the lifting device body is provided with a bottom plate penetrating into the inside of the opening, the bottom plate is an inverted T-shaped structure, a through hole is formed at the middle position of the bottom plate, a drill pipe joint is inserted into the through hole, one end of the drill pipe joint extends into the inside of the lifting device body, the top end of the drill pipe joint is provided with a bayonet, the inside of the lifting device body is provided with a pressing plate located at the top end of the drill pipe joint, the top end of the drill pipe joint is provided with a socket, the bottom end of the pressing plate is provided with a plug rod extending into the inside of the socket, the lifting device body is provided with a height adjusting mechanism connected with the pressing plate, the two sides of the lifting device body are provided with anti-falling groups connected with the drill pipe joint.

[0005] The anti-falling group comprises a slot one, a rotating shaft, a stopper clamping rod, a first sliding hole and a first sliding block, the two sides of the lifting device body are symmetrically provided with the slot one, the lifting device body is provided with the rotating shaft located in the inside of the slot one, the rotating shaft is rotatably provided with the stopper clamping rod, one end of the stopper clamping rod extends into the inside of the bayonet, the two stopper clamping rods are provided with the first sliding block located in the inside of the bayonet, the two sides of the drill pipe joint are provided with the first sliding hole connected with the socket, and the first sliding block extends into the inside of the first sliding hole.

[0006] Both sides of the pressure plate are equipped with braking units connected to the stop lever. A movable cylinder is slidably connected to the fixed plate. The interior of the fixed plate is equipped with a moving component connected to the movable cylinder. A moving rod is movably connected to the bottom end of the movable cylinder. A locking tooth is provided on one side of the moving rod. The locking tooth is connected to the stop pushing unit. Both fixed plates are equipped with connecting parts connected to the base plate at opposite ends.

[0007] Preferably, the height adjustment mechanism includes a motor, a rotating shaft, a bevel gear, an internally threaded cylinder, a fixed rod, a T-shaped threaded rod, a second connecting groove, a second sliding opening of the connecting block, a second slider, and a connecting piece. The fixed frame houses the motor, the motor output shaft is connected to the rotating shaft, the bevel gear is sleeved on the rotating shaft, the bevel gear is connected to the moving component, the lifting body houses the internally threaded cylinder, the rotating shaft extends into the internally threaded cylinder, and the inner wall of the lifting body houses the fixed rod connected to the outer wall of the internally threaded cylinder. The rotating shaft is sleeved on the outside, the T-shaped threaded rod is slidably connected to the rotating shaft, the T-shaped threaded rod extends into the internally threaded cylinder, and the T-shaped threaded rod is threadedly connected to the internally threaded cylinder. The T-shaped threaded rod is connected to the pressure plate via a connecting piece.

[0008] Preferably, the connector includes a second connecting groove and a connecting block. The bottom end of the T-shaped threaded rod is provided with a connecting block, and the top end of the pressure plate is provided with a second connecting groove sleeved on the outside of the connecting block. Both the second connecting groove and the connecting block are T-shaped structures.

[0009] Preferably, the bottom end of the rotating shaft is symmetrically provided with a second slider, and the inner wall of the T-shaped threaded rod is provided with a second sliding opening that is slidably connected to the second slider. Both the second slider and the second sliding opening are rectangular structures.

[0010] Preferably, the stop pushing unit includes a stop group and a pushing group. The stop group includes a second slot, a mounting plate, a stop plate, a toothed plate, and a first slot. The two sides of the lifting device body are symmetrically provided with the second slot, and the two sides of the pressure plate are symmetrically provided with the mounting plate. The side of the mounting plate near the second slot is provided with the first toothed plate. One end of the mounting plate is provided with a stop plate that penetrates the second slot and extends to the outside of the lifting device body. The stop plate is located on the side wall of the stop rod. The stop plate has an L-shaped structure, and the top of the side of the stop plate away from the mounting plate is provided with a first slot that is sleeved on the outside of the toothed plate at equal intervals. The lifting device body is provided with a pushing group connected to the first toothed plate.

[0011] Preferably, the pushing assembly includes a mounting shaft, a gear, a push block, a second toothed plate, a bevel, a through groove, and a stabilizing rod. The lifting device body is provided with a mounting shaft located inside the second slot. A gear is sleeved on the mounting shaft, and the gear meshes with the first toothed plate. A push block is slidably mounted on the lifting device body. One side of the push block is provided with a second toothed plate that meshes with the gear. A bevel is provided on the side of the push block away from the second toothed plate. A through groove is provided on the push block. A stabilizing rod inserted into the through groove is provided at the inner bottom end of the second slot.

[0012] Preferably, the connector includes a connecting rod, a first connecting groove, and three bolts. The connecting rods are symmetrically arranged on both sides of the fixing plate, and the first connecting grooves are symmetrically opened on both sides of the bottom plate. One end of the connecting rod extends into the interior of the first connecting groove, and the bottom end of the bottom plate is provided with three bolts that connect to the connecting rods.

[0013] Preferably, the bottom end of the movable cylinder is provided with a movable opening, the top end of the movable cylinder is provided with a second sliding groove, the top end of the moving rod passes through the movable opening and extends into the interior of the second sliding groove, the moving rod is slidably connected to the second sliding groove, the inner wall of the movable cylinder is provided with support rods at equal intervals, the moving rod is provided with an opening sleeved on the outside of the support rod, and a spring connected to the side wall of the moving rod is sleeved on the outside of the support rod.

[0014] Preferably, the moving component includes a receiving groove, a rotating rod, a second bevel gear, a transmission rod, an internally threaded block, a first sliding groove, and a snap-fit ​​component. The top of the lifting device body has a receiving groove, and a rotating rod is installed on the inner wall of the receiving groove. One end of the rotating rod is provided with a second bevel gear that meshes with the first bevel gear. A transmission rod is rotatably installed on the inner wall of the fixed plate. The transmission rod and the rotating rod are connected by a snap-fit ​​component. An internally threaded block is sleeved on the outside of the transmission rod and is threadedly connected to the transmission rod. The bottom of the fixed plate has a first sliding groove, and the internally threaded block passes through the first sliding groove and connects to the top of the movable cylinder.

[0015] Preferably, the locking component includes a locking strip and a second locking groove. The two sides of the transmission rod are symmetrically provided with locking strips, and the inner wall of the rotating rod is provided with a second locking groove that slides and connects with the locking strips. Both the second locking groove and the locking strip are rectangular structures.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) In operation, by setting up a lifting ring, lifting device body, fixing frame, base plate, bolt one, fixing plate, connecting seat, bolt two, bottom plate, through port, drill pipe joint, bayonet, pressure plate, insertion port, insertion rod, height adjustment mechanism, anti-detachment group and stop pushing unit, it is convenient to press the drill pipe joint and support the drill pipe joint, effectively improve the stability of the drill pipe joint suspension, avoid the drill pipe joint from falling during the lifting process, and thus realize the anti-detachment function of the drill pipe joint;

[0018] (2) By combining the stop push unit and the height adjustment mechanism, the support for the drill pipe joint is effectively disconnected, thus facilitating the free fall of the drill pipe joint and avoiding manual climbing to a high place to cause the drill pipe joint to fall, thereby reducing labor input and protecting the workers. This design achieves the dual functions of preventing the drill tool from falling off and automatic descent, thereby improving the practicality of the device.

[0019] (3) By using the fixing plate and connecting parts, it is easy to fix the fixing plate to the bottom plate, thereby fixing the hoist body to the bottom plate, improving the connection stability of the hoisting ring, the hoist body and the bottom plate, and thus providing stability for the hoisting of the drill pipe joint.

[0020] (4) Through the movable cylinder, moving rod, cleaver and moving component, the movement of the cleaver is effectively facilitated, thereby facilitating the connection between the cleaver and the first slot, realizing the fastening of the stop plate, thereby realizing the stop of the stop cleaver, effectively providing stability for the support of the stop cleaver to the drill pipe joint, and further improving the anti-fall-off design of the drill pipe joint.

[0021] (5) Through the movable opening, support rod, spring, opening and second sliding groove, the elastic connection between the moving rod and the movable cylinder is effectively realized, and thus when the first slot and the tooth are connected, it effectively provides the possibility of raising and lowering the stop plate. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the automatic lowering anti-drop lifting device of the present invention;

[0025] Figure 2 For the present invention Figure 1 External structural diagram;

[0026] Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A;

[0027] Figure 4 This is a schematic diagram of the height adjustment mechanism of the present invention;

[0028] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point B;

[0029] Figure 6 For the present invention Figure 1 Enlarged structural diagram at point C;

[0030] Figure 7 For the present invention Figure 6 Enlarged structural diagram at point E;

[0031] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point F;

[0032] In the diagram: 1. Lifting ring; 2. Lifter body; 3. Fixing frame; 4. Base plate; 5. Bolt 1; 6. Fixing plate; 7. Connecting seat; 8. Bolt 2; 9. Base plate; 10. Through port; 11. Drill rod connector; 12. Bayonet; 13. Pressure plate; 14. Insertion port; 15. Insert rod; 16. Slot 1; 17. Rotating shaft; 18. Stop rod; 19. First sliding port; 20. First slider; 21. Connecting rod; 22. First connecting groove; 23. Bolt 3; 24. Slot 2; 25. Mounting plate; 26. Stop plate; 27. Gear plate 1; 28. Mounting shaft; 29. ​​Gear; 30. Push block; 31. Gear plate 2; 32. 33. Inclined edge; 34. Through groove; 35. Stabilizing rod; 36. Motor; 37. Rotating shaft; 38. First slot; 39. Movable cylinder; 40. Moving rod; 41. Clamping tooth; 42. Bevel gear one; 43. Internal threaded cylinder; 44. Fixed rod; 45. T-shaped threaded rod; 46. Second connecting groove; 47. Connecting block; 48. Second sliding opening; 49. Second slider; 50. Rotating rod; 51. Bevel gear two; 52. Transmission rod; 53. Internal threaded block; 54. First sliding groove; 55. Movable opening; 56. Support rod; 57. Spring; 58. Opening; 59. Clamping strip; 60. Second slot. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] Depend on Figures 1 to 8The present invention includes a lifting ring 1 and a lifting device body 2. The lifting ring 1 has a lifting device body 2 at its bottom end, and the lifting device body 2 has an opening at its bottom end. The inner top end of the lifting ring 1 has a fixing frame 3. The fixing frame 3 has base plates 4 located at the bottom end of the lifting ring 1 on both sides. The base plates 4 have bolts 5 that connect to the lifting ring 1 and the lifting device body 2. The lifting device body 2 has fixing plates 6 symmetrically located at the top ends of both sides. The outer wall of the fixing plates 6 has connecting seats 7 located on the side walls of the lifting ring 1 and the lifting device body 2. The connecting seats 7 have bolts 8 that connect to the lifting ring 1 and the lifting device body 2. The bottom end of the lifting device body 2 has a bottom plate that penetrates the opening. 9. The base plate 9 is an inverted T-shaped structure. A through-hole 10 is opened in the middle of the base plate 9. A drill pipe joint 11 is inserted inside the through-hole 10. One end of the drill pipe joint 11 extends into the interior of the lifting device body 2. A bayonet 12 is opened on both sides of the top of the drill pipe joint 11. A pressure plate 13 is located at the top of the drill pipe joint 11 inside the lifting device body 2. A socket 14 is opened at the top of the drill pipe joint 11. A plug rod 15 extending into the socket 14 is provided at the bottom of the pressure plate 13. A height adjustment mechanism connected to the pressure plate 13 is provided on the lifting device body 2. Anti-detachment groups connected to the drill pipe joint 11 are provided on both sides of the lifting device body 2.

[0035] The worker places the port 10 inside the opening at the bottom of the lifting device body 2, then installs the fixing plate 6 on one side of the lifting device body 2 and connects it to the base plate 9 through the connector to fix the base plate 9 to the lifting device body 2, and fixes the connecting seat 7 to the lifting ring 1 and the lifting device body 2 through the bolt 8.

[0036] The anti-detachment assembly includes a slot 16, a rotating shaft 17, a stop rod 18, a first sliding opening 19, and a first slider 20. The lifting device body 2 has slots 16 symmetrically opened on both sides. The lifting device body 2 has a rotating shaft 17 located inside the slot 16. The stop rod 18 is rotatably installed on the rotating shaft 17. One end of the stop rod 18 extends into the inside of the slot 12. Both stop rods 18 have a first slider 20 located inside the slot 12. The drill pipe joint 11 has a first sliding opening 19 on both sides that communicates with the insertion port 14, and the first slider 20 extends into the inside of the first sliding opening 19.

[0037] By adjusting the height, the pressure plate 13 can be moved upward, which in turn will drive the stop pushing unit to move, causing the stop lever 18 to rotate around the pivot 17. Then, one side of the stop lever 18 will be located at the top of the base plate 9, and one end of the stop lever 18 will rotate to the inner wall of the slot 16. Then, the operator will insert the drill pipe joint 11 through the through-hole 10 and extend it into the interior of the lifting device body 2. Then, the braking unit will be moved upward by adjusting the height. Then, the operator will swing the stop lever 18 to rotate around the pivot 17, which will cause one end of the stop lever 18 to extend into the pressure plate 13 inside the drill pipe joint 11. At the same time, one end of the stop lever 18 will be located at the top of the base plate 9, and the first slider 20 on the stop lever 18 will be located in the first sliding opening 19 inside the drill pipe joint 11, thus supporting the drill pipe joint 11 and preventing the drill pipe joint 11 from falling during suspension.

[0038] Both sides of the pressure plate 13 are equipped with braking units connected to the stop lever 18. A movable cylinder 38 is slidably connected to the fixed plate 6. The interior of the fixed plate 6 is equipped with a moving component connected to the movable cylinder 38. A moving rod 39 is movably connected to the bottom end of the movable cylinder 38. A locking tooth 40 is provided on one side of the moving rod 39. The locking tooth 40 is connected to the stop pushing unit. Both fixed plates 6 are equipped with connecting parts connected to the base plate 9 at opposite ends. Through the operation of the height adjustment mechanism, the pressure plate 13 will move down, and then the pressure plate 13 will drive the insertion rod 15 to insert into the insertion port 14 at the top of the drill pipe joint 11, thereby pressing the drill pipe joint 11 and fastening the drill pipe joint 11, preventing the drill pipe joint 11 from shaking during suspension, and improving the suspension stability of the drill pipe joint 11.

[0039] The height adjustment mechanism includes a motor 35, a rotating shaft 36, a bevel gear 41, an internal threaded cylinder 42, a fixing rod 43, a T-shaped threaded rod 44, a second connecting groove 45, a connecting block 46, a second sliding opening 47, a second slider 48, and a connecting piece. The motor 35 is located inside the fixing frame 3. The output shaft of the motor 35 is connected to the rotating shaft 36. The bevel gear 41 is fitted onto the rotating shaft 36 and is connected to the moving component. The lifting device body 2 has an internal threaded cylinder 42 inside. The rotating shaft 36 extends into the interior of the internal threaded cylinder 42. The inner wall of the lifting device body 2 has a fixing rod 43 that connects to the outer wall of the internal threaded cylinder 42. The outer side of the rotating shaft 36 is fitted with a T-shaped threaded rod 44. 44 is slidably connected to the rotating shaft 36. The T-shaped threaded rod 44 extends into the interior of the internal threaded cylinder 42 and is threadedly connected to the internal threaded cylinder 42. The T-shaped threaded rod 44 is connected to the pressure plate 13 through a connector. The connector includes a second connecting groove 45 and a connecting block 46. The bottom end of the T-shaped threaded rod 44 is provided with a connecting block 46. The top end of the pressure plate 13 is provided with a second connecting groove 45 that is sleeved on the outside of the connecting block 46. Both the second connecting groove 45 and the connecting block 46 are T-shaped structures. The bottom end of the rotating shaft 36 is symmetrically provided with a second slider 48. The inner wall of the T-shaped threaded rod 44 is provided with a second sliding opening 47 that is slidably connected to the second slider 48. Both the second slider 48 and the second sliding opening 47 are rectangular structures.

[0040] By starting the motor 35 and rotating it forward, the motor 35 drives the rotating shaft 36 to rotate. Through the engagement between the second sliding port 47 and the second slider 48, the rotating shaft 36 drives the second slider 48 to rotate. The second slider 48 drives the T-shaped threaded rod 44 to rotate. Through the threaded connection between the T-shaped threaded rod 44 and the internal threaded cylinder 42, and the fixing effect of the internal threaded cylinder 42 to the lifting device body 2 via the fixing rod 43, the T-shaped threaded rod 44 moves downward inside the internal threaded cylinder 42. This causes the T-shaped threaded rod 44 to drive the connecting block 46 to rotate inside the second connecting groove 45, simultaneously causing the pressure plate 13 to move downward. This allows the pressure plate 13 to press against the drill pipe joint 11. Combined with the stop pushing unit, this effectively stops the stop lever 18. To prevent the stop lever 18 from deflecting, thus ensuring the suspension stability of the drill pipe joint 11 and preventing it from falling during suspension, the motor 35 reverses when the drill pipe joint 11 needs to fall freely. This causes the pressure plate 13 to move upward, disengaging its pressure on the top of the drill pipe joint 11. Simultaneously, the stop pushing unit effectively disengages the stop lever 18, pushing it to rotate and disengage its stop limit on the drill pipe joint 11. This facilitates the free fall of the drill pipe joint 11, implementing an anti-fall design during suspension and allowing it to fall freely after suspension, thereby improving the safety of the drill pipe joint 11.

[0041] The stop-pushing unit includes a stop assembly and a pushing assembly. The stop assembly includes a second slot 24, a mounting plate 25, a stop plate 26, a toothed plate 27, and a first slot 37. The two sides of the lifting device body 2 are symmetrically provided with the second slot 24, and the two sides of the pressure plate 13 are symmetrically provided with the mounting plate 25. Each mounting plate 25 has a toothed plate 27 on the side closest to the second slot 24. One end of the mounting plate 25 has a stop plate 26 that penetrates the second slot 24 and extends to the outside of the lifting device body 2. The stop plate 26 is located on the side wall of the stop lever 18. The stop plate 26 has an L-shaped structure, and the top of the stop plate 26 away from the mounting plate 25 has first slots 37 that are equidistantly provided on the outside of the toothed plate 40. The body 2 is provided with a push assembly connected to the toothed plate 27. The push assembly includes a mounting shaft 28, a gear 29, a push block 30, a toothed plate 31, an inclined side 32, a through groove 33, and a stabilizing rod 34. The lifting body 2 is provided with a mounting shaft 28 located inside the slot 24. A gear 29 is sleeved on the mounting shaft 28. The gear 29 meshes with the toothed plate 27. A push block 30 is slidably mounted on the lifting body 2. A toothed plate 31 that meshes with the gear 29 is provided on one side of the push block 30. An inclined side 32 is provided on the side of the push block 30 away from the toothed plate 31. A through groove 33 is provided on the push block 30. A stabilizing rod 34 that passes through the through groove 33 is provided at the inner bottom end of the slot 24.

[0042] When the pressure plate 13 is raised or lowered, it will drive the mounting plate 25 to move, which in turn drives the toothed plate 27 to move. Simultaneously, the mounting plate 25 will drive the stop plate 26 to move. Through the meshing connection between the toothed plate 27 and the gear 29, the gear 29 will rotate. Through the meshing connection between the gear 29 and the toothed plate 31, the toothed plate 31 will drive the push block 30 to move. The push block 30 will then drive the through groove 33 to slide outside the stabilizer rod 34, thus achieving opposite movement directions for the stop plate 26 and the push block 30. This results in the stop plate 26 moving downwards and the push block 30 moving upwards, causing the stop plate 26 to move to the outer wall of the stop rod 18, preventing deflection of the stop rod 18 and improving the limiting stability of the stop rod 18 on the drill pipe joint 11. This prevents the drill pipe joint 11 from falling off during lifting. When drill pipe... When the joint 11 falls freely, the stop plate 26 moves upward, causing it to disengage from the outer wall of the stop rod 18. This causes the push block 30 to move downward, pulling the inclined side 32 downward. The bottom of the push block 30 then moves to the inner wall of the stop rod 18, bringing it into contact with the inclined side 32. Due to the inclined side 32, the push block 30 pushes the stop rod 18 to rotate around the shaft 17, causing it to push the drill pipe joint 11 upward. This causes the stop rod 18 to move the first slider 20 to slide in the first sliding opening 19 on the side wall of the drill pipe joint 11, disengaging it from the drill pipe joint 11. This allows the drill pipe joint 11 to fall freely through the opening 10, preventing workers from having to climb to a high place to lower it, thus protecting the workers.

[0043] The connecting component includes a connecting rod 21, a first connecting groove 22, and a bolt 23. The connecting rod 21 is symmetrically provided on both sides of the fixing plate 6, and the first connecting groove 22 is symmetrically provided on both sides of the bottom plate 9. One end of the connecting rod 21 extends into the interior of the first connecting groove 22, and the bottom end of the bottom plate 9 is provided with a bolt 23 connected to the connecting rod 21.

[0044] When the staff installs the fixing plate 6 on one side of the lifting device body 2, they insert one end of the connecting rod 21 into the first connecting groove 22 on the side wall of the base plate 9, and install bolt 3 23 at the bottom of the base plate 9 to fix the connecting rod 21, thereby fixing the base plate 9 at the bottom of the lifting device body 2, effectively achieving a tight connection between the lifting ring 1, the lifting device body 2 and the base plate 9.

[0045] The bottom end of the movable cylinder 38 is provided with a movable opening 54, and the top inner end of the movable cylinder 38 is provided with a second sliding groove 58. The top end of the moving rod 39 passes through the movable opening 54 and extends into the interior of the second sliding groove 58. The moving rod 39 is slidably connected to the second sliding groove 58. Support rods 55 are provided at equal intervals on the inner wall of the movable cylinder 38. An opening 57 is provided on the moving rod 39 and sleeved on the outside of the support rod 55. A spring 56 connected to the side wall of the moving rod 39 is sleeved on the outside of the support rod 55.

[0046] When the baffle 26 needs to be adjusted for lifting, due to the elastic connection between the moving rod 39 and the movable cylinder 38, and because both the first slot 37 and the locking tooth 40 are triangular structures, the baffle 26 will push the locking tooth 40 to disengage from the first slot 37 when the baffle 26 is lifted, making it easier for the moving rod 39 to slide inside the movable opening 54. As a result, one end of the moving rod 39 will slide inside the second sliding groove 58, and the opening 57 on the moving rod 39 will slide outside the support rod 55. The spring 56 will generate elastic force, effectively providing the possibility for the moving rod 39 to move flexibly at the bottom of the movable cylinder 38, thereby providing the possibility for the baffle 26 to be lifted.

[0047] The moving component includes a receiving groove, a rotating rod 49, a second bevel gear 50, a transmission rod 51, an internal threaded block 52, a first sliding groove 53, and a snap-fit ​​component. The top of the lifting body 2 has a receiving groove, and the inner wall of the receiving groove is equipped with a rotating rod 49. One end of the rotating rod 49 is provided with a second bevel gear 50 that meshes with the first bevel gear 41. The inner wall of the fixed plate 6 is rotatably mounted with a transmission rod 51. The transmission rod 51 and the rotating rod 49 are connected by a snap-fit ​​component. The outer side of the transmission rod 51 is fitted with an internal threaded block 52, which is threadedly connected to the transmission rod 51. The bottom end of the fixed plate 6 has a first sliding groove 53, and the internal threaded block 52 passes through the first sliding groove 53 and connects to the top of the movable cylinder 38. The snap-fit ​​component includes a snap bar 59 and a second snap groove 60. Snap bars 59 are symmetrically provided on both sides of the transmission rod 51. The inner wall of the rotating rod 49 has a second snap groove 60 that slides with the snap bars 59. Both the second snap groove 60 and the snap bars 59 are rectangular structures.

[0048] When the fixing plate 6 is installed on the outer wall of the lifting device body 2, the transmission rod 51 inside the fixing plate 6 will be inserted into the rotating rod 49, which will in turn cause the locking strip 59 to be inserted into the second locking slot 60. When the motor 35 drives the rotating shaft 36 to rotate, the rotating shaft 36 realizes the rotation of the bevel gear 41. Through the meshing connection between the bevel gear 41 and the bevel gear 50, the bevel gear 50 will rotate, and the bevel gear 50 will drive the rotating rod 49 to rotate. The locking strip 59 is engaged with the second locking slot 60. The action will cause the transmission rod 51 to rotate. Through the threaded connection between the transmission rod 51 and the internal threaded block 52, and the sliding connection between the internal threaded block 52 and the first sliding groove 53, the internal threaded block 52 will drive the movable cylinder 38 to move. The movable cylinder 38 will drive the moving rod 39 to move synchronously. In turn, the moving rod 39 will drive the locking tooth 40 to move, so that the locking tooth 40 can engage with the first locking groove 37 on the stop plate 26, thereby realizing the fastening of the moving rod 39 to the stop plate 26 and the fixation of the stop plate 26.

[0049] Working principle: During operation, the operator places the inlet 10 inside the opening at the bottom of the lifting device body 2, then installs the fixing plate 6 on one side of the lifting device body 2. This causes the transmission rod 51 inside the fixing plate 6 to insert into the rotating rod 49, which in turn causes the locking strip 59 to insert into the second locking groove 60. One end of the connecting rod 21 is then inserted into the first connecting groove 22 on the side wall of the base plate 9. Bolt 23 is then installed at the bottom of the base plate 9 to fix the connecting rod 21, thus fixing the base plate 9 to the bottom of the lifting device body 2. A tight connection is achieved between the lifting ring 1, the lifting device body 2, and the base plate 9. Then, the drill pipe joint 11 is passed through the through-hole 10 and extended into the interior of the lifting device body 2. Next, the stop rod 18 is swung to rotate around the rotating shaft 17, which causes one end of the stop rod 18 to extend into the pressure plate 13 inside the drill pipe joint 11. At the same time, one end of the stop rod 18 is located at the top of the base plate 9, and the first slider 20 on the stop rod 18 is located in the first sliding opening 19 inside the drill pipe joint 11, thereby supporting the drill pipe joint 11.

[0050] Next, the motor 35 is started to rotate forward. The motor 35 drives the rotating shaft 36 to rotate. Through the engagement between the second sliding port 47 and the second slider 48, the rotating shaft 36 drives the second slider 48 to rotate. The second slider 48 drives the T-shaped threaded rod 44 to rotate. Through the threaded connection between the T-shaped threaded rod 44 and the internal threaded cylinder 42, and the fixing action of the internal threaded cylinder 42 to the lifting device body 2 via the fixing rod 43, the T-shaped threaded rod 44 moves downward inside the internal threaded cylinder 42. As a result, the T-shaped threaded rod 44 drives the connecting block 46 to rotate inside the second connecting groove 45, thereby causing the pressure plate 13 to move downward. This allows the pressure plate 13 to press against the drill pipe joint 11. The pressure plate 13 then drives the mounting plate 25 to move, thus installing... Plate 25 drives toothed plate 27 to move, and at the same time, mounting plate 25 drives stop plate 26 to move. Through the meshing connection between toothed plate 27 and gear 29, gear 29 will rotate. Through the meshing connection between gear 29 and toothed plate 31, toothed plate 31 will drive push block 30 to move. Then push block 30 will drive through groove 33 to slide outside of stabilizer rod 34, so that stop plate 26 and push block 30 move in opposite directions. This results in stop plate 26 moving down and push block 30 moving up, so that stop plate 26 moves to the outer wall of stop rod 18, preventing stop rod 18 from deflecting. This improves the stability of stop rod 18 for drill pipe joint 11 and prevents drill pipe joint 11 from falling off.

[0051] Simultaneously, when the motor 35 drives the rotating shaft 36 to rotate, the rotating shaft 36 realizes the rotation of the bevel gear 41. Through the meshing connection between the bevel gear 41 and the bevel gear 50, the bevel gear 50 will rotate. The bevel gear 50 drives the rotating rod 49 to rotate. Through the engagement of the locking strip 59 and the second locking groove 60, the transmission rod 51 will rotate. Through the threaded connection between the transmission rod 51 and the internal thread block 52 and the sliding connection between the internal thread block 52 and the first sliding groove 53, the internal thread block 52 will drive the movable cylinder 38 to move. The movable cylinder 38 drives the moving rod 39 to move synchronously. In turn, the moving rod 39 will drive the locking tooth 40 to move, so that the locking tooth 40 can engage with the first locking groove 37 on the stop plate 26. This will achieve the fastening of the moving rod 39 to the stop plate 26 and the fixation of the stop plate 26, thereby improving the support stability of the stop rod 18 for the drill pipe joint 11.

[0052] When the drill pipe joint 11 needs to fall freely, the motor 35 reverses, causing the pressure plate 13 to move upward, thereby breaking the pressure of the pressure plate 13 on the top of the drill pipe joint 11. At the same time, the pressure plate 13 drives the mounting plate 25, which in turn drives the stop plate 26 to move upward, causing the stop plate 26 to disengage from the outer wall of the stop rod 18. When the stop plate 26 moves upward, due to the elastic connection between the moving rod 39 and the movable cylinder 38, and because the first slot 37 and the tooth 40 are both triangular structures, the stop plate 26 will push the tooth 40 to move when the baffle 26 moves, making it easier for the tooth 40 to disengage from the first slot 37. As a result, the moving rod 39 will slide inside the movable opening 54, and one end of the moving rod 39 will slide inside the second sliding groove 58, causing the opening 57 on the moving rod 39 to slide outside the support rod 55, and causing the spring 56 to generate elastic force, effectively providing the possibility for the moving rod 39 to move flexibly at the bottom of the movable cylinder 38, thereby providing the possibility for the baffle 26 to rise and fall.

[0053] This will cause the push block 30 to move downwards. As the push block 30 will drive the inclined side 32 to move downwards, the bottom end of the push block 30 will move to the inner wall of the stop rod 18, so that the inner wall of the stop rod 18 contacts the inclined side 32. Due to the inclined setting of the inclined side 32, the push block 30 will push the stop rod 18 to rotate around the rotating shaft 17. Then the stop rod 18 will rotate in the slot 12 on the side wall of the drill pipe joint 11. Then the stop rod 18 will drive the first slider 20 to slide in the first sliding opening 19 on the side wall of the drill pipe joint 11, so that the first slider 20 is disengaged from the drill pipe joint 11. Then the drill pipe joint 11 will fall freely through the inside of the through opening 10, which can avoid the need for people to climb to a high place to fall the drill pipe joint 11, thus protecting the workers.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0055] 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. An automatically descending, anti-drop type lifting device, comprising a lifting ring (1) and a lifting device body (2), characterized in that: The bottom end of the lifting ring (1) is provided with a lifting device body (2), and the bottom end of the lifting device body (2) is provided with an opening. The inner top end of the lifting ring (1) is provided with a fixing frame (3). The two sides of the fixing frame (3) are provided with base plates (4) located at the bottom end of the lifting ring (1). The base plates (4) are provided with bolts (5) connecting the lifting ring (1) and the lifting device body (2). The top ends of the two sides of the lifting device body (2) are symmetrically provided with fixing plates (6). The outer wall of the fixing plates (6) is provided with connecting seats (7) located on the side walls of the lifting ring (1) and the lifting device body (2). The connecting seats (7) are provided with bolts (8) connecting the lifting ring (1) and the lifting device body (2). The bottom end of the lifting device body (2) is provided with a bottom plate (9) that penetrates the opening. The bottom plate (9) is an inverted T-shaped structure. A through-hole (10) is provided in the middle of the bottom plate (9). A drill pipe joint (11) is inserted inside the through-hole (10). One end of the drill pipe joint (11) extends into the interior of the lifting device body (2). A bayonet (12) is provided on both sides of the top of the drill pipe joint (11). A pressure plate (13) is provided inside the lifting device body (2) at the top of the drill pipe joint (11). A socket (14) is provided at the top of the drill pipe joint (11). A plug rod (15) is provided at the bottom of the pressure plate (13) extending into the socket (14). A height adjustment mechanism connected to the pressure plate (13) is provided on the lifting device body (2). Anti-detachment groups connected to the drill pipe joint (11) are provided on both sides of the lifting device body (2). The anti-detachment assembly includes a slot (16), a rotating shaft (17), a stop rod (18), a first sliding opening (19), and a first slider (20). The lifting device body (2) has slots (16) symmetrically opened on both sides. The lifting device body (2) has a rotating shaft (17) located inside the slot (16). A stop rod (18) is rotatably installed on the rotating shaft (17). One end of the stop rod (18) extends into the inside of the slot (12). Both stop rods (18) have a first slider (20) located inside the slot (12). The drill pipe joint (11) has a first sliding opening (19) connected to the insertion port (14) on both sides. The first slider (20) extends into the inside of the first sliding opening (19). Both sides of the pressure plate (13) are provided with braking units connected to the stop lever (18). The fixed plate (6) is slidably connected with a movable cylinder (38). The fixed plate (6) is provided with a moving component connected to the movable cylinder (38). The bottom end of the movable cylinder (38) is movably connected with a moving rod (39). One side of the moving rod (39) is provided with a locking tooth (40). The locking tooth (40) is connected to the stop pushing unit. Both fixed plates (6) are provided with connecting parts connected to the bottom plate (9) at opposite ends.

2. The automatically descending, anti-drop type lifting device according to claim 1, characterized in that: The height adjustment mechanism includes a motor (35), a rotating shaft (36), a bevel gear (41), an internal threaded cylinder (42), a fixed rod (43), a T-shaped threaded rod (44), a second connecting groove (45), a connecting block (46), a second sliding opening (47), a second slider (48), and a connecting piece. The fixed frame (3) is equipped with a motor (35), the output shaft of which is connected to the rotating shaft (36). A bevel gear (41) is fitted on the rotating shaft (36), and the bevel gear (41) is connected to the moving component. The lifting body (2) is located inside the motor (35). The part is provided with an internal threaded cylinder (42), the rotating shaft (36) extends into the interior of the internal threaded cylinder (42), and the inner wall of the lifting body (2) is provided with a fixing rod (43) connected to the outer wall of the internal threaded cylinder (42). A T-shaped threaded rod (44) is sleeved on the outside of the rotating shaft (36). The T-shaped threaded rod (44) is slidably connected to the rotating shaft (36). The T-shaped threaded rod (44) extends into the interior of the internal threaded cylinder (42), and the T-shaped threaded rod (44) is threadedly connected to the internal threaded cylinder (42). The T-shaped threaded rod (44) is connected to the pressure plate (13) through a connector.

3. The automatically descending, anti-drop type lifting device according to claim 2, characterized in that: The connector includes a second connecting groove (45) and a connecting block (46). The bottom end of the T-shaped threaded rod (44) is provided with a connecting block (46), and the top end of the pressure plate (13) is provided with a second connecting groove (45) sleeved on the outside of the connecting block (46). Both the second connecting groove (45) and the connecting block (46) are T-shaped structures.

4. The automatically descending, anti-drop type lifting device according to claim 2, characterized in that: The bottom end of the rotating shaft (36) is symmetrically provided with a second slider (48), and the inner wall of the T-shaped threaded rod (44) is provided with a second sliding opening (47) that is slidably connected to the second slider (48). Both the second slider (48) and the second sliding opening (47) are rectangular structures.

5. The automatically descending, anti-drop type lifting device according to claim 1, characterized in that: The stop and push unit includes a stop group and a push group. The stop group includes a second slot (24), a mounting plate (25), a stop plate (26), a toothed plate (27) and a first slot (37). The two sides of the lifting body (2) are symmetrically provided with the second slot (24). The two sides of the pressure plate (13) are symmetrically provided with the mounting plate (25). The side of the mounting plate (25) near the second slot (24) is provided with the toothed plate (27). One end of the mounting plate (25) is provided with a stop plate (26) that penetrates the second slot (24) and extends to the outside of the lifting body (2). The stop plate (26) is located on the side wall of the stop rod (18). The stop plate (26) is an L-shaped structure. The top of the side of the stop plate (26) away from the mounting plate (25) is provided with a first slot (37) that is sleeved on the outside of the toothed plate (40). The lifting body (2) is provided with a push group that is connected to the toothed plate (27).

6. The automatically descending, anti-drop type lifting device according to claim 5, characterized in that: The push assembly includes a mounting shaft (28), a gear (29), a push block (30), a second toothed plate (31), a bevel (32), a through groove (33), and a stabilizing rod (34). The lifting body (2) is provided with a mounting shaft (28) located inside the second slot (24). A gear (29) is sleeved on the mounting shaft (28). The gear (29) meshes with the first toothed plate (27). A push block (30) is slidably mounted on the lifting body (2). A second toothed plate (31) meshes with the gear (29) on one side of the push block (30). A bevel (32) is opened on the side of the push block (30) away from the second toothed plate (31). A through groove (33) is opened on the push block (30). A stabilizing rod (34) inserted into the through groove (33) is provided at the bottom of the second slot (24).

7. The automatically descending, anti-drop type lifting device according to claim 1, characterized in that: The connecting component includes a connecting rod (21), a first connecting groove (22), and a bolt (23). The connecting rod (21) is symmetrically provided on both sides of the fixing plate (6), and the first connecting groove (22) is symmetrically provided on both sides of the bottom plate (9). One end of the connecting rod (21) extends into the interior of the first connecting groove (22), and the bottom end of the bottom plate (9) is provided with a bolt (23) connected to the connecting rod (21).

8. The automatically descending, anti-drop type lifting device according to claim 1, characterized in that: The bottom end of the movable cylinder (38) is provided with a movable opening (54), the top end of the movable cylinder (38) is provided with a second sliding groove (58), the top end of the moving rod (39) passes through the movable opening (54) and extends into the interior of the second sliding groove (58), the moving rod (39) is slidably connected to the second sliding groove (58), the inner wall of the movable cylinder (38) is provided with support rods (55) at equal intervals, the moving rod (39) is provided with an opening (57) sleeved on the outside of the support rod (55), and the outside of the support rod (55) is provided with a spring (56) connected to the side wall of the moving rod (39).

9. The automatically descending, anti-drop type lifting device according to claim 1, characterized in that: The moving assembly includes a receiving groove, a rotating rod (49), a second bevel gear (50), a transmission rod (51), an internal threaded block (52), a first sliding groove (53), and a snap-fit ​​component. The top of the lifting body (2) is provided with a receiving groove, and the inner wall of the receiving groove is equipped with a rotating rod (49). One end of the rotating rod (49) is provided with a second bevel gear (50) that meshes with the first bevel gear (41). The inner wall of the fixed plate (6) is rotatably equipped with a transmission rod (51). The transmission rod (51) and the rotating rod (49) are connected by a snap-fit ​​component. The outer side of the transmission rod (51) is fitted with an internal threaded block (52), and the internal threaded block (52) is threadedly connected to the transmission rod (51). The bottom end of the fixed plate (6) is provided with a first sliding groove (53), and the internal threaded block (52) passes through the first sliding groove (53) and is connected to the top of the movable cylinder (38).

10. The automatically descending, anti-drop type lifting device according to claim 9, characterized in that: The snap-fit ​​component includes a snap-fit ​​strip (59) and a second snap-fit ​​groove (60). The two sides of the transmission rod (51) are symmetrically provided with snap-fit ​​strips (59). The inner wall of the rotating rod (49) is provided with a second snap-fit ​​groove (60) that is slidably connected to the snap-fit ​​strip (59). Both the second snap-fit ​​groove (60) and the snap-fit ​​strip (59) are rectangular structures.

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