Anti-falling slip elevator

Abstract

The invention relates to an anti-falling slip elevator, and belongs to the field of slip elevators, the anti-falling slip elevator comprises a main body and a valve, the valve is located on the front side of the main body, the main body is connected with the valve, two hanging ring grooves are formed in the main body, the two hanging ring grooves are symmetrically formed in the left side and the right side of the main body respectively, and two hoisting mechanisms are arranged on the main body. The two hoisting mechanisms are in one-to-one correspondence with the two hoisting ring grooves; the hoisting mechanism comprises a stop block and a groove, the groove is formed in the main body, the stop block is inserted into the groove, the stop block is rotationally connected with the main body through a first pin shaft, the first pin shaft is parallel to the front-back direction, the stop block is connected with the main body through a torsional spring, and a pushing part, a blocking part and a limiting surface are arranged on the stop block; according to the lifting ring dismounting device, a plug pin does not need to be pulled out, operation convenience is improved, synchronous rotation of the two stop blocks can be achieved by controlling the lifting plate to ascend, and therefore the lifting ring dismounting efficiency is improved conveniently.

Description

Technical Field

[0001] The invention relates to an anti-falling slip elevator and belongs to the field of slip elevators. Background Art

[0002] In the well repair operation in the oil field, multiple drill pipes are connected to each other to carry out the well repair work in the deep well. When the work is completed, the drill pipe needs to be hoisted and disassembled. The drill pipe elevator is installed on the lower side of the upper drill pipe joint of the second drill pipe from the top to lift the second drill pipe and prevent it from falling.

[0003] The Chinese utility model patent with the announcement number CN206360657U discloses an elevator for lifting large casing, including an elevator body, a valve and a latch. One end of the valve is hinged to the elevator body through a valve pin, and the outer side of the valve is provided with two upper and lower positioning seats near the other end thereof. A locking handle is hinged between the positioning seats through a locking handle pin. A spring seat is provided at one end of the locking handle near the valve pin, and a spring perpendicular to the valve is provided on the spring seat. The inner side of the other end of the locking handle is connected to the latch through a locking hook, and the latch is hinged to the elevator body through the latch pin. The elevator of the utility model has a simple structure, is easy to operate, can effectively prevent the valve from being accidentally opened, has good locking performance, is safe and reliable, and can meet the structural strength and wear resistance requirements of marine drilling operations, and is particularly suitable for lifting large casing. However, in the prior art, the stopper is locked by a pull-out pin, and the operation is cumbersome when removing the lifting ring.

[0004] Therefore, there is a need for an anti-drop slip elevator to improve the convenience of operation. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to overcome the deficiencies of the prior art, an anti-drop slip elevator with improved operating convenience is provided.

[0006] The technical solution adopted by the present invention to solve the above-mentioned problem is: an anti-drop slip elevator, comprising a main body and a valve, the valve being located at the front side of the main body, the main body being connected to the valve, the main body being provided with two lifting ring grooves, the two lifting ring grooves being symmetrically arranged on the left and right sides of the main body, the main body being provided with two lifting mechanisms, the two lifting mechanisms corresponding to the two lifting ring grooves one by one; The lifting mechanism includes a block and a groove, wherein the groove is arranged on the main body, the block is inserted into the groove, the block is rotatably connected to the main body through a first pin shaft, the first pin shaft is parallel to the front and rear directions, the block is connected to the main body through a torsion spring, and a pushing part, a blocking part and a limiting surface are arranged on the block, the pushing part and the blocking part are respectively located above and below the first pin shaft, the blocking part is located at the lifting ring groove, and the limiting surface is in contact with the inner wall of the groove.

[0007] Preferably, an operating mechanism is provided on the main body, and the operating mechanism is used to drive the two stoppers to rotate simultaneously. The operating mechanism is located at the rear side of the main body, and the operating mechanism is connected to the two lifting mechanisms; The operating mechanism comprises a lifting plate and two transmission assemblies, the two transmission assemblies correspond to two lifting mechanisms one by one, and the lifting plate is connected to the lifting mechanisms through the transmission assemblies.

[0008] Preferably, the transmission assembly includes a connecting rod, a lifting rod and a fixed block, the lifting rod is arranged vertically, the bottom end of the lifting rod is fixedly set on the lifting plate, the fixed block is fixedly set on the main body, the lifting rod movably passes through the fixed block, the connecting rod is arranged obliquely, one end of the connecting rod is hinged to the pushing part through a second pin shaft, a third pin shaft is fixedly set on the top end of the lifting rod, a first strip groove and a second strip groove are set on the connecting rod, the first strip groove and the second strip groove are both parallel to the connecting rod, the third pin shaft is inserted into the first strip groove, a fixing pin is set in the second strip groove, and the fixing pin, the second pin shaft and the third pin shaft are all parallel to the first pin shaft.

[0009] Preferably, the operating mechanism also includes a locking assembly, which includes a rotating shaft, which is vertically arranged above the lifting plate, and a through hole is arranged on the lifting plate, which matches the rotating shaft and is coaxially arranged, and two sliding grooves are arranged on the inner wall of the through hole, and the sliding grooves extend to the top and bottom of the lifting plate in the vertical direction, and the two sliding grooves are symmetrically arranged about the axis of the through hole, and two locking blocks are fixedly provided on the outer peripheral wall of the rotating shaft, and the two locking blocks correspond to the two sliding grooves one by one, and the rotating shaft is rotatably connected to the main body.

[0010] Preferably, two locking grooves are provided at the bottom of the lifting plate, the two locking grooves are arranged alternately with the two sliding grooves, the two locking grooves are arranged symmetrically about the axis of the through hole, and the groove depth of the locking groove is less than the thickness of the lifting plate.

[0011] Preferably, a knob is fixedly provided on the top of the rotating shaft, an annular groove is provided on the rotating shaft, a support ring is rotatably connected in the annular groove, the support ring is fixedly connected to the main body, the support ring and the annular groove are coaxially arranged with the rotating shaft, the inner diameter of the support ring is equal to the diameter of the annular groove, the height of the support ring is equal to the height of the annular groove, and the support ring is located between the locking block and the knob.

[0012] Preferably, a slot is provided at the bottom of the knob, a block is provided in the slot, and the block is fixedly connected to the support ring.

[0013] Preferably, the block is spherical.

[0014] Preferably, the left side of the valve is rotatably connected to the main body, and the right side of the valve is locked with the main body via a locking member.

[0015] Preferably, a first notch is provided on the front side of the main body, and a second notch is provided on the rear side of the valve, and the first notch and the second notch together form a hanging hole.

[0016] Compared with the prior art, the advantages of the present invention are: The anti-dropping slip elevator of the present invention does not need to pull out a plug pin, thereby improving the convenience of operation; moreover, by controlling the lifting plate to rise, the two stoppers can be rotated synchronously, thereby facilitating improving the efficiency of disassembling the lifting ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first stereoscopic diagram of an anti-slip elevator of the present invention; Figure 2 A second stereoscopic diagram of an anti-slip elevator of the present invention; Figure 3 This is a front view of an anti-slip elevator of the present invention; Figure 4 A top view of an anti-slip elevator of the present invention; Figure 5 It is a left view of an anti-drop slip elevator of the present invention; Figure 6 It is a schematic diagram of the connection structure between the lifting mechanism and the operating mechanism; Figure 7 It is the structural diagram of the lifting mechanism; Figure 8 for Figure 6 A magnified view of part A; Fig. 9 It is a structural schematic diagram of the lifting plate; Fig.10 is a schematic diagram of the structure of the locking assembly; Fig.11 It is a schematic diagram of the connection structure between the rotating shaft and the knob; Fig.12 The schematic diagram of the structure of the main body; Fig.13 It is a schematic diagram of the structure of the valve.

[0018] in: Main body 1, valve 2, locking member 3, first notch 4, second notch 5, lifting ring groove 6, lifting mechanism 7, operating mechanism 8; Stopper 71, groove 72, first pin 73, torsion spring 74; Pushing portion 711, blocking portion 712, limiting surface 713; Lifting plate 81, transmission assembly 82, locking assembly 83; Connecting rod 821, lifting rod 822, fixing block 823, second pin shaft 824, third pin shaft 825, first strip groove 826, second strip groove 827, fixing pin 828; Rotating shaft 830 , through hole 831 , sliding groove 832 , locking groove 833 , locking block 834 , knob 835 , annular groove 836 , supporting ring 837 , clamping groove 838 , clamping block 839 . DETAILED DESCRIPTION

[0019] like Figure 1-13 As shown, an anti-drop slip elevator in this embodiment comprises a main body 1 and a valve 2, wherein the valve 2 is located at the front side of the main body 1, the left side of the valve 2 is rotatably connected to the main body 1, and the right side of the valve 2 is locked with the main body 1 through a locking member 3, a first notch 4 is provided at the front side of the main body 1, a second notch 5 is provided at the rear side of the valve 2, the first notch 4 and the second notch 5 are combined to form a lifting hole, and the lifting hole is used for the installation of a drill rod, and two lifting ring grooves 6 are provided on the main body 1, and the two lifting ring grooves 6 are symmetrically arranged on the left and right sides of the main body 1, and two lifting mechanisms 7 are provided on the main body 1, and the two lifting mechanisms 7 correspond to the two lifting ring grooves 6 one by one; The lifting mechanism 7 includes a stopper 71 and a groove 72, wherein the groove 72 is provided on the main body 1, the stopper 71 is inserted into the groove 72, the stopper 71 is rotatably connected to the main body 1 via a first pin shaft 73, the first pin shaft 73 is parallel to the front-rear direction, the stopper 71 is connected to the main body 1 via a torsion spring 74, a pushing portion 711, a blocking portion 712 and a limiting surface 713 are provided on the stopper 71, the pushing portion 711 and the blocking portion 712 are respectively located above and below the first pin shaft 73, the blocking portion 712 is located at the lifting ring groove 6, and the limiting surface 713 is in contact with the inner wall of the groove 72; When the locking cam 720 is in the state of being lifted up, the locking cam 712 will be in the state of being lifted up, so that the locking cam 710 can be turned to the left by the bolt 712. When the locking cam 720 is in the state of being lifted up, the locking cam 710 will be in the state of being lifted up. When the lifting ring needs to be removed, the pushing portion 711 can be pushed by hand or foot, so that the pushing portion 711 rotates around the first pin shaft 73 away from the center of the main body 1. The rotation of the pushing portion 711 drives the blocking portion 712 to rotate synchronously, that is, the blocking plate rotates around the first pin shaft 73 toward the center of the main body 1, and the torsion spring 74 is deformed, and the lifting ring groove 6 is opened. At this time, the lifting ring is removed from the main body 1, and after the pushing portion 711 is released, the pushing portion 711 and the blocking plate are reset by the elastic action of the torsion spring 74. In this way, compared with the prior art, there is no need to pull out the plug, which improves the convenience of operation; The main body 1 is provided with an operating mechanism 8, which is located at the rear side of the main body 1. The operating mechanism 8 is connected to the two lifting mechanisms 7, and the two stoppers 71 are driven to rotate simultaneously by the operating mechanism 8; The operating mechanism 8 includes a lifting plate 81 and two transmission components 82. The two transmission components 82 correspond to the two lifting mechanisms 7 one by one. The lifting plate 81 is connected to the lifting mechanism 7 through the transmission components 82. The transmission assembly 82 includes a connecting rod 821, a lifting rod 822 and a fixing block 823. The lifting rod 822 is arranged vertically, and the bottom end of the lifting rod 822 is fixedly arranged on the lifting plate 81, and the fixing block 823 is fixedly arranged on the main body 1. The lifting rod 822 movably passes through the fixing block 823. The connecting rod 821 is arranged obliquely, and one end of the connecting rod 821 is hinged to the pushing portion 711 through a second pin shaft 824. A third pin shaft 825 is fixedly arranged on the top of the lifting rod 822. A first strip groove 826 and a second strip groove 827 are provided on the connecting rod 821. The first strip groove 826 and the second strip groove 827 are both parallel to the connecting rod 821. The third pin shaft 825 is inserted into the first strip groove 826. A fixing pin 828 is provided in the second strip groove 827. The fixing pin 828, the second pin shaft 824 and the third pin shaft 825 are all parallel to the first pin shaft 73. When the lifting ring needs to be removed, the lifting plate 81 can be lifted. The lifting of the lifting plate 81 drives the lifting rod 822 to rise synchronously on the fixing block 823. The lifting of the lifting rod 822 drives the third pin shaft 825 to rise. The rising of the third pin shaft 825 drives the pushing part 711 to rotate around the first pin shaft 73 away from the center of the main body 1 through the connecting rod 821 and the first pin shaft 73. During the rotation of the pushing part 711, the third pin shaft 825 and the first strip groove 826 are relatively moved. At the same time, the fixing pin 828 and the second strip groove 827 are relatively moved. In addition, the pushing part 711 and the second pin shaft 824 are relatively rotated. When the lifting plate 81 is released, the reset of the pushing part 711 resets the lifting plate 81. The operating mechanism 8 further includes a locking assembly 83, and the locking assembly 83 is used to limit the lifting plate 81; The locking assembly 83 includes a rotating shaft 830, which is vertically arranged above the lifting plate 81. The lifting plate 81 is provided with a through hole 831, which matches the rotating shaft 830 and is coaxially arranged. Two sliding grooves 832 are arranged on the inner wall of the through hole 831, and the sliding grooves 832 extend to the top and the bottom of the lifting plate 81 in the vertical direction. The two sliding grooves 832 are symmetrically arranged about the axis of the through hole 831. Two locking grooves 833 are arranged at the bottom of the lifting plate 81. The two locking grooves 833 are staggered with the two sliding grooves 832. The two locking grooves 833 are symmetrically arranged about the axis of the through hole 831. The groove depth of the locking grooves 833 is less than the thickness of the lifting plate 81. Two locking blocks 834 are fixedly arranged on the outer peripheral wall of the rotating shaft 830 , the two locking blocks 834 correspond to the two slide grooves 832 one by one, and the rotating shaft 830 is rotatably connected to the main body 1. When the lifting ring is removed and the lifting plate 81 is raised, the rotating shaft 830 passes through the through hole 831, and the two locking blocks 834 pass through the two slide grooves 832 respectively. Then, the rotating shaft 830 is rotated 90 degrees and the lifting plate 81 is released. When the lifting plate 81 is lowered, the two locking blocks 834 are respectively inserted into the locking grooves 833. Through the cooperation between the locking blocks 834 and the locking grooves 833, the lifting plate 81 is locked to prevent the lifting plate 81 from continuing to fall. When the lifting ring is removed, the lifting plate 81 is lifted again, and the locking grooves 833 are separated from the locking blocks 834, and the rotating shaft 830 is rotated 90 degrees in the opposite direction. Then, the lifting plate 81 is released to make the lifting plate 81 fall to the initial position; A knob 835 is fixedly provided at the top of the rotating shaft 830, and an annular groove 836 is provided on the rotating shaft 830. A support ring 837 is rotatably connected in the annular groove 836. The support ring 837 is fixedly connected to the main body 1. The support ring 837 and the annular groove 836 are coaxially arranged with the rotating shaft 830. The inner diameter of the support ring 837 is equal to the diameter of the annular groove 836. The height of the support ring 837 is equal to the height of the annular groove 836. The support ring 837 is located between the locking block 834 and the knob 835. The bottom of the knob 835 is provided with a slot 838, and a block 839 is provided in the slot 838. The block 839 is fixedly connected to the support ring 837, and the block 839 is spherical. The circumferential positioning of the knob 835 is achieved through the cooperation between the clamping block 839 and the clamping slot 838, that is, the circumferential positioning of the rotating shaft 830 is achieved, so that the locking block 834 can pass through the sliding slot 832. When the knob 835 is rotated, the clamping slot 838 is separated from the clamping block 839. In summary, there is no need to pull out the plug pin, which improves the convenience of operation. Moreover, by controlling the lifting plate 81 to rise, the two stoppers 71 can be rotated synchronously, thereby facilitating the improvement of the efficiency of the lifting ring removal.

[0020] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. An anti-drop slip elevator, comprising a main body (1) and a valve (2), wherein the valve (2) is located at the front side of the main body (1), and the main body (1) is connected to the valve (2), characterized in that: The main body (1) is provided with two lifting ring grooves (6), the two lifting ring grooves (6) are symmetrically arranged on the left and right sides of the main body (1), and the main body (1) is provided with two lifting mechanisms (7), the two lifting mechanisms (7) correspond one to one with the two lifting ring grooves (6); The lifting mechanism (7) comprises a stopper (71) and a groove (72), wherein the groove (72) is arranged on the main body (1), the stopper (71) is inserted into the groove (72), the stopper (71) is rotatably connected to the main body (1) via a first pin shaft (73), the first pin shaft (73) is parallel to the front-rear direction, the stopper (71) is connected to the main body (1) via a torsion spring (74), and the stopper (71) is provided with a pushing portion (711), a blocking portion (712) and a limiting surface (713), the pushing portion (711) and the blocking portion (712) are respectively located above and below the first pin shaft (73), the blocking portion (712) is located at the lifting ring groove (6), and the limiting surface (713) is in contact with the inner wall of the groove (72).

2. The anti-dropping slip elevator according to claim 1, characterized in that: An operating mechanism (8) is provided on the main body (1), and the operating mechanism (8) is used to drive the two stoppers (71) to rotate simultaneously. The operating mechanism (8) is located at the rear side of the main body (1), and the operating mechanism (8) is connected to the two lifting mechanisms (7); The operating mechanism (8) comprises a lifting plate (81) and two transmission assemblies (82), the two transmission assemblies (82) corresponding one to one with the two lifting mechanisms (7), and the lifting plate (81) is connected to the lifting mechanism (7) via the transmission assemblies (82).

3. The anti-dropping slip elevator according to claim 2, characterized in that: The transmission assembly (82) comprises a connecting rod (821), a lifting rod (822) and a fixing block (823); the lifting rod (822) is arranged vertically; the bottom end of the lifting rod (822) is fixedly arranged on the lifting plate (81); the fixing block (823) is fixedly arranged on the main body (1); the lifting rod (822) movably passes through the fixing block (823); the connecting rod (821) is arranged obliquely; one end of the connecting rod (821) is hinged to the pushing portion (711) via a second pin shaft (824); and the lifting rod (82 2) is fixedly provided with a third pin shaft (825) at the top end, the connecting rod (821) is provided with a first strip groove (826) and a second strip groove (827), the first strip groove (826) and the second strip groove (827) are both parallel to the connecting rod (821), the third pin shaft (825) is inserted into the first strip groove (826), the second strip groove (827) is provided with a fixing pin (828), and the fixing pin (828), the second pin shaft (824) and the third pin shaft (825) are all parallel to the first pin shaft (73).

4. The anti-dropping slip elevator according to claim 2 or 3, characterized in that: The operating mechanism (8) further comprises a locking assembly (83), wherein the locking assembly (83) comprises a rotating shaft (830), wherein the rotating shaft (830) is vertically arranged above the lifting plate (81), wherein a through hole (831) is arranged on the lifting plate (81), wherein the through hole (831) matches and is coaxially arranged with the rotating shaft (830), wherein two slide grooves (832) are arranged on the inner wall of the through hole (831), wherein the slide grooves (832) extend vertically to the top and bottom of the lifting plate (81), wherein the two slide grooves (832) are symmetrically arranged about the axis of the through hole (831), and wherein two locking blocks (834) are fixedly arranged on the outer peripheral wall of the rotating shaft (830), wherein the two locking blocks (834) correspond one to one to the two slide grooves (832), and wherein the rotating shaft (830) is rotationally connected to the main body (1).

5. The anti-dropping slip elevator according to claim 4, characterized in that: Two locking grooves (833) are arranged at the bottom of the lifting plate (81); the two locking grooves (833) and the two sliding grooves (832) are arranged alternately; the two locking grooves (833) are arranged symmetrically about the axis of the through hole (831); and the groove depth of the locking grooves (833) is less than the thickness of the lifting plate (81).

6. The anti-dropping slip elevator according to claim 4, characterized in that: A knob (835) is fixedly provided at the top end of the rotating shaft (830), an annular groove (836) is provided on the rotating shaft (830), a support ring (837) is rotatably connected in the annular groove (836), the support ring (837) is fixedly connected to the main body (1), the support ring (837) and the annular groove (836) are both coaxially arranged with the rotating shaft (830), the inner diameter of the support ring (837) is equal to the diameter of the annular groove (836), the height of the support ring (837) is equal to the height of the annular groove (836), and the support ring (837) is located between the locking block (834) and the knob (835).

7. The anti-dropping slip elevator according to claim 6, characterized in that: A slot (838) is provided at the bottom of the knob (835), a block (839) is provided in the slot (838), and the block (839) is fixedly connected to the support ring (837).

8. The anti-dropping slip elevator according to claim 7, characterized in that: The clamping block (839) is spherical.

9. The anti-dropping slip elevator according to claim 1, characterized in that: The left side of the valve (2) is rotatably connected to the main body (1), and the right side of the valve (2) is locked with the main body (1) via a locking piece (3).

10. The anti-dropping slip elevator according to claim 1, characterized in that: The front side of the main body (1) is provided with a first notch (4), the rear side of the valve (2) is provided with a second notch (5), and the first notch (4) and the second notch (5) are combined to form a hanging hole.

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