Lifting device, lifting and righting system and drilling rig mast

Abstract

The present invention provides a lifting device, a lifting and straightening system and a drilling rig derrick, which relate to the technical field of drilling equipment, and solve the technical problem that the lifting mechanism needs to be frequently disassembled when the large hook is hung on the faucet to a certain extent. The lifting device provided by the present invention includes a sliding mechanism, a supporting mechanism and a limiting mechanism; the sliding mechanism includes a slide rail arranged in the vertical direction, and a pulley is provided on the slide rail; the supporting mechanism includes a first arm and a second arm arranged in the horizontal direction, and one end of the first arm and the second arm are respectively rotatably connected to the pulley, and the first arm and the second arm can rotate in the horizontal direction relative to the pulley; the limiting mechanism includes a first limiting member and a second limiting member, and the first limiting member and the second limiting member are respectively rotatably connected to one end of the first arm and the second arm away from the pulley; the first limiting member and the second limiting member can be buckled to form a limiting space, and the limiting space is adapted to the hook rod of the large hook.

Description

Technical Field

[0001] The invention relates to the technical field of drilling equipment, and in particular to a lifting device, a lifting and righting system and a drilling rig derrick. Background Art

[0002] In oil drilling operations, the existing lifting mechanism frequently disassembles the upper connection structure when performing the operation of hanging the big hook on the faucet so that the big hook can be moved to the appropriate position. The lifting mechanism and the straightening mechanism are both located at a height of more than two meters. Frequent disassembly and assembly not only reduces the operating efficiency, but also causes the operators to perform too much high-altitude operations.

[0003] Therefore, it is urgent to provide a lifting device, a lifting and straightening system and a drilling rig derrick to solve the problems existing in the prior art to a certain extent. Summary of the invention

[0004] The purpose of the present invention is to provide a lifting device, a lifting and righting system and a drilling rig derrick, so as to solve the technical problem that the lifting mechanism needs to be frequently disassembled when the large hook hangs the faucet to a certain extent.

[0005] A lifting device provided by the present invention includes a sliding mechanism, a supporting mechanism and a limiting mechanism; the sliding mechanism includes a slide rail arranged in a vertical direction, and a pulley is provided on the slide rail; the supporting mechanism includes a first arm and a second arm arranged in a horizontal direction, one end of the first arm and the second arm are respectively rotatably connected to the pulley, and the first arm and the second arm can rotate in a horizontal direction relative to the pulley; the limiting mechanism includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively rotatably connected to one end of the first arm and the second arm away from the pulley; the first limiting member and the second limiting member can be buckled to form a limiting space, and the limiting space is adapted to the hook rod of the large hook.

[0006] Wherein, the first support arm and the second support arm both include a sleeve and a sleeve rod, the sleeve rod is arranged in the sleeve, and one end of the sleeve rod protrudes from the sleeve; the sleeve rod can extend or retract along the extension direction of the sleeve.

[0007] Specifically, a limiting hole is provided on the sleeve in a horizontal direction, and a limiting protrusion is provided on the sleeve rod. The limiting protrusion is located in the limiting hole to prevent the sleeve rod from sliding out of the sleeve.

[0008] Furthermore, a first connecting component is provided at one end of the sleeve rod of the first arm and the second arm away from the sleeve; the first connecting component includes a first connecting plate, a second connecting plate, a first connecting shaft and a second connecting shaft; the first connecting plate is rotatably connected to the sleeve rod of the first arm through the first connecting shaft, and the first limiting member is fixedly connected to the first connecting plate so that the first limiting member can rotate relative to the sleeve rod of the first arm; the second connecting plate is rotatably connected to the sleeve rod of the second arm through the second connecting shaft, and the second limiting member is fixedly connected to the second connecting plate so that the second limiting member can rotate relative to the sleeve rod of the second arm.

[0009] Wherein, a second connecting assembly is provided on the two side walls of the pulley, and the second connecting assembly includes a third connecting plate, a fourth connecting plate, a third connecting shaft and a fourth connecting shaft; one end of the first arm away from the first limiting member is rotatably connected to the third connecting plate through the third connecting shaft, and one end of the second arm away from the second limiting member is rotatably connected to the fourth connecting plate through the fourth connecting shaft.

[0010] Specifically, the first limiting member and the second limiting member are both semicircular structures, and a first connecting portion is formed at both ends; a first connecting hole is opened on the first connecting portion, and the first connecting member passes through the first connecting holes of the first limiting member and the second limiting member in sequence, so that the first limiting member and the second limiting member are connected.

[0011] Among them, the lifting device provided by the present invention also includes a limit clamp, which is located below the limit mechanism, the limit mechanism and the hook rod are clearance-matched, the limit clamp matches the hook rod and is fastened to the hook rod; the inner diameter of the limit space is not greater than the maximum diameter of the limit clamp; when the large hook is lifted, the limit clamp can abut against the lower surface of the limit mechanism, thereby driving the pulley to move upward through the support mechanism.

[0012] Specifically, the limiting clamp includes a first limiting clamp and a second limiting clamp; the first limiting clamp and the second limiting clamp are both semicircular structures, and second connecting parts are formed at both ends; a second connecting hole is opened on the second connecting part, and the first limiting clamp and the second limiting clamp are connected by a second connecting member passing through the second connecting holes of the first limiting clamp and the second limiting clamp in sequence.

[0013] Compared with the prior art, the lifting device provided by the present invention has the following advantages:

[0014] The lifting device provided by the present invention includes a sliding mechanism, a supporting mechanism and a limiting mechanism; the sliding mechanism includes a slide rail arranged in a vertical direction, and a pulley is provided on the slide rail; the supporting mechanism includes a first arm and a second arm arranged in a horizontal direction, one end of the first arm and the second arm are respectively rotatably connected to the pulley, and the first arm and the second arm can rotate in a horizontal direction relative to the pulley; the limiting mechanism includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively rotatably connected to one end of the first arm and the second arm away from the pulley; the first limiting member and the second limiting member can be buckled to form a limiting space, and the limiting space is adapted to the hook rod of the large hook.

[0015] From this analysis, it can be seen that the limiting space is formed by the buckling of the first limiting piece and the second limiting piece, and the first arm and the second arm are both rotatably connected to the pulley, the first limiting piece and the first arm are rotatably connected, and the second limiting piece and the second arm are rotatably connected. When the hook rod of the large hook is located in the limiting space formed by the buckling of the first limiting piece and the second limiting piece, the large hook can be driven to move to the installation position through the rotatable first arm, the second arm and the first limiting piece and the second limiting piece to perform the faucet hanging operation.

[0016] Therefore, the technical problem that the lifting mechanism needs to be frequently disassembled when the faucet is hung on a large hook can be solved to a certain extent.

[0017] In addition, the present invention also provides a lifting and righting system, including the above-mentioned lifting device, the righting device and the lifting ring; the righting device is arranged on the pulley and is located below the lifting device; the lifting ring is installed on the righting device, and the lifting ring is connected to the large hook.

[0018] The present invention also provides a drilling rig derrick, comprising the above-mentioned lifting and righting system and a derrick body; the slide rail is arranged on the derrick body along the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the overall structure of a lifting device provided by an embodiment of the present invention from a first perspective;

[0021] Figure 2 A schematic diagram of the overall structure of a lifting device provided by an embodiment of the present invention from a second viewing angle;

[0022] Figure 3 A schematic diagram of the overall structure of a lifting and righting system provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the overall structure of a righting device in a lifting and righting system provided in an embodiment of the present invention.

[0024] In the figure: 1-first arm; 101-first connecting plate; 102-first connecting shaft; 103-third connecting plate; 104-third connecting shaft; 2-second arm; 201-second connecting plate; 202-second connecting shaft; 203-fourth connecting plate; 3-first limiting member; 4-second limiting member; 5-sleeve; 501-limiting channel; 6-sleeve rod; 601-limiting protrusion; 7-first connecting part; 8-first connecting part; 9-limiting clamp; 901-first limiting clamp; 902-second limiting clamp; 10-second connecting part; 11-second connecting part; 12-pulley; 13-slide rail; 14-straightening device; 15-lifting ring; 16-lifting card. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or are the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of the present application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0030] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings.

[0031] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0032] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0033] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be considered that the combination of such technical solutions does not exist and is not within the scope of protection required by the present application.

[0034] Figure 1 A schematic diagram of the overall structure of a lifting device provided by an embodiment of the present invention from a first perspective; Figure 2 A schematic diagram of the overall structure of a lifting device provided by an embodiment of the present invention from a second viewing angle; Figure 3 A schematic diagram of the overall structure of a lifting and righting system provided in an embodiment of the present invention.

[0035] like Figure 1-Figure 3 As shown, the present invention provides a lifting device, including a sliding mechanism, a supporting mechanism and a limiting mechanism; the sliding mechanism includes a slide rail 13 arranged in a vertical direction, and a pulley 12 is provided on the slide rail 13; the supporting mechanism includes a first arm 1 and a second arm 2 arranged in a horizontal direction, one end of the first arm 1 and the second arm 2 are respectively rotatably connected to the pulley 12, and the first arm 1 and the second arm 2 can rotate in a horizontal direction relative to the pulley 12; the limiting mechanism includes a first limiting member 3 and a second limiting member 4, the first limiting member 3 and the second limiting member 4 are respectively rotatably connected to one end of the first arm 1 and the second arm 2 away from the pulley 12; the first limiting member 3 and the second limiting member 4 can be buckled to form a limiting space, and the limiting space is adapted to the hook rod of the large hook.

[0036] Compared with the prior art, the lifting device provided by the present invention has the following advantages:

[0037] The lifting device provided by the present invention has a limited space formed by the buckling of the first limiter 3 and the second limiter 4, and the first arm 1 and the second arm 2 are both rotatably connected to the pulley 12, the first limiter 3 and the first arm 1 are rotatably connected, and the second limiter 4 and the second arm 2 are rotatably connected. When the hook rod of the large hook is located in the limited space formed by the buckling of the first limiter 3 and the second limiter 4, the large hook can be driven to move to the installation position by the rotatable first arm 1, the second arm 2 and the first limiter 3 and the second limiter 4 to perform the operation of hanging the faucet.

[0038] The first limit member 3 and the second limit member 4 in the present application are in a separated state when not in operation. When the first limit member 3 and the second limit member 4 need to be snapped together to form a limit space, since the first support arm 1 and the second support arm 2 in the present application can rotate in the horizontal direction, the first limit member 3 and the second limit member 4 can be driven to move toward each other until the first limit member 3 and the second limit member 4 are snapped together to form a limit space.

[0039] During operation, the hook rod of the large hook is first moved to the position of the limiting mechanism, and then the first arm 1 and the second arm 2 are moved in a direction close to each other, thereby driving the first limiting member 3 and the second limiting member 4 to move in a direction close to each other, and after the first limiting member 3 and the second limiting member 4 are in contact with each other and buckled, the large hook can be driven to move by rotating the first arm 1 and the second arm 2 in the horizontal direction. Therefore, the technical problem that the lifting mechanism needs to be frequently disassembled when the large hook is hung on the faucet can be solved to a certain extent.

[0040] The first arm 1 and the second arm 2 in the present application both extend in the horizontal direction, and the first arm 1 and the second arm 2 are located on the same horizontal plane and rotate in the horizontal direction, ensuring that the first limit member 3 and the second limit member 4 connected to the first arm 1 and the second arm 2 form a limit space that can drive the hook rod to move after being buckled.

[0041] It should be additionally explained here that the first limiting member 3 and the second limiting member 4 in the present application are both located on the same horizontal plane as the first support arm 1 and the second support arm 2, thereby ensuring the limiting of the hook rod during operation.

[0042] Among them, Figure 1-Figure 3 As shown, the first arm 1 and the second arm 2 both include a sleeve 5 and a sleeve rod 6. The sleeve rod 6 is disposed in the sleeve 5, and one end of the sleeve rod 6 protrudes out of the sleeve 5. The sleeve rod 6 can extend or retract along the extension direction of the sleeve 5.

[0043] In the present application, the first arm 1 and the second arm 2 are both composed of a sleeve 5 and a sleeve rod 6, and the first limit member 3 and the second limit member 4 are both connected to the end of the sleeve rod 6 protruding from the sleeve 5. Through the extension and retraction of the sleeve rod 6, the first limit member 3 and the second limit member 4 are driven to move in a direction away from or close to the pulley 12, and then the limiting space formed by the first limit member 3 and the second limit member 4 can drive the large hook to move in a direction away from or close to the pulley 12, thereby further improving the movement range of the large hook.

[0044] It should be additionally explained here that, preferably, the sleeve 5 in the present application is a square sleeve, the sleeve rod 6 is a cylindrical sleeve rod, and a cylindrical accommodating cavity matching the cylindrical sleeve rod is opened along the center line of the square sleeve, and the sleeve rod 6 can extend or retract in the accommodating cavity.

[0045] Specifically, Figure 1-Figure 3 As shown, a limiting hole 501 is provided on the sleeve 5 in the horizontal direction, and a limiting protrusion 601 is provided on the sleeve rod 6. The limiting protrusion 601 is located in the limiting hole 501 to prevent the sleeve rod 6 from sliding out of the sleeve 5.

[0046] A limiting protrusion 601 is provided on the outer wall of the sleeve rod 6, and a limiting channel 501 is opened along the length direction of the outer wall of the sleeve 5, and the limiting protrusion 601 can extend into the limiting channel 501. When the sleeve rod 6 is extended, since the limiting protrusion 601 can only move in the limiting channel 501, it can prevent the sleeve rod 6 from slipping out of the sleeve 5 and causing damage to the entire device.

[0047] It should be noted that, since the sleeve 5 in the present application is a square sleeve, the four side walls of the square sleeve can be provided with limiting holes 501, and the limiting protrusions 601 on the sleeve rod 6 can match the limiting holes 501. Preferably, the number of limiting holes 501 on the first arm 1 and the second arm 2 in the present application is one, so that the strength of the sleeve 5 is ensured while limiting the sleeve rod 6.

[0048] Furthermore, if Figure 1-Figure 3 As shown, the first arm 1 and the second arm 2 are both provided with a first connecting assembly at one end of the sleeve rod 6 away from the sleeve 5; the first connecting assembly includes a first connecting plate 101, a second connecting plate 201, a first connecting shaft 102 and a second connecting shaft 202; the first connecting plate 101 is rotatably connected to the sleeve rod 6 of the first arm 1 through the first connecting shaft 102, and the first limiting member 3 is fixedly connected to the first connecting plate 101 so that the first limiting member 3 can rotate relative to the sleeve rod 6 of the first arm 1; the second connecting plate 201 is rotatably connected to the sleeve rod 6 of the second arm 2 through the second connecting shaft 202, and the second limiting member 4 is fixedly connected to the second connecting plate 201 so that the second limiting member 4 can rotate relative to the sleeve rod 6 of the second arm 2.

[0049] The first limit member 3 is rotationally connected to the first arm 1 through the first connecting plate 101 and the first connecting shaft 102, and the second limit member 4 is rotationally connected to the second arm 2 through the second connecting plate 201 and the second connecting shaft 202, so that when the sleeve rod 6 of the first arm 1 or the sleeve rod 6 of the second arm 2 is extended, the first limit member 3 and the second limit member 4 can rotate relative to each other, and since the first arm 1 and the second arm 2 are both rotationally connected to the pulley 12, the movement range of the large hook is increased by making the first limit member 3 and the second limit member 4 rotationally connected to the sleeve rod 6 away from one end of the sleeve 5.

[0050] It should be additionally explained here that, preferably, the first connecting shaft 102 and the second connecting shaft 202 in the present application are pins, the first connecting plate 101 and the second connecting plate 201 are C-shaped, and the end of the sleeve rod 6 away from the sleeve 5 is arranged in the C-shaped space of the connecting plate through a pin.

[0051] Among them, Figure 1-Figure 3As shown, a second connecting assembly is provided on the two side walls of the pulley 12, and the second connecting assembly includes a third connecting plate 103, a fourth connecting plate 203, a third connecting shaft 104 and a fourth connecting shaft; one end of the first arm 1 away from the first limiting member 3 is rotatably connected to the third connecting plate 103 through the third connecting shaft 104, and one end of the second arm 2 away from the second limiting member 4 is rotatably connected to the fourth connecting plate 203 through the fourth connecting shaft.

[0052] The third connecting plate 103 and the fourth connecting plate 203 in the present application are fixedly arranged relative to the pulley 12, so as to improve the connection strength between the first supporting arm 1 and the second supporting arm 2 and the pulley 12 to a certain extent.

[0053] Since the first arm 1 is rotatably connected to the pulley 12 through the third connecting plate 103 and the third connecting shaft 104, there is a certain distance between the axis of the first arm 1 in the length direction and the side wall of the pulley 12. Therefore, the first arm 1 has a certain rotation space relative to the pulley 12.

[0054] After the second arm 2 is rotatably connected to the pulley 12 through the fourth connecting plate 203 and the fourth connecting shaft (not shown in the figure, the structure is the same as the third connecting shaft 104), there is a certain distance between the axis of the second arm 2 in the length direction and the side wall of the pulley 12, so that the second arm 2 also has a certain rotation space relative to the pulley 12. Therefore, the first arm 1 and the second arm 2 can be rotated in the horizontal direction.

[0055] It should be noted that the third connecting plate 103 and the fourth connecting plate 203 in the present application can be fixedly connected to the pulley 12 by welding, or can be detachably connected to the pulley 12 by fasteners such as bolts. Preferably, the third connecting shaft 104 and the fourth connecting shaft are pin shafts.

[0056] Specifically, Figure 1-Figure 3 As shown, the first limit member 3 and the second limit member 4 are both semicircular structures, and a first connecting portion 7 is formed at both ends; a first connecting hole is opened on the first connecting portion 7, and the first connecting member 8 passes through the first connecting holes of the first limit member 3 and the second limit member 4 in sequence, so that the first limit member 3 and the second limit member 4 are connected.

[0057] Since the hook rod of the large hook is approximately a cylindrical structure, the first limiting member 3 and the second limiting member 4 are configured as a semicircular structure so that the limiting space formed by the buckling can better match the hook rod.

[0058] The first connection part 7 in the present application is located at both ends of the semicircular first limit member 3 and the second limit member 4. When the first limit member 3 and the second limit member 4 are in contact, the first connection parts 7 on the first limit member 3 and the second limit member 4 are relatively positioned, so that the first connection holes on the first connection parts 7 are relatively positioned, and the first connection member 8 is passed through the first connection hole, so that the first limit member 3 and the second limit member 4 can be quickly combined together.

[0059] It should be additionally explained here that the first connecting member 8 in the present application is a bolt. After the bolt passes through the aligned first connecting hole, the first limiting member 3 and the second limiting member 4 are locked by a nut.

[0060] Among them, Figure 1-Figure 3 As shown, the lifting device provided by the present invention also includes a limit clamp 9, which is located below the limit mechanism, the limit mechanism and the hook rod are clearance-matched, the limit clamp 9 matches the hook rod and is fastened to the hook rod; the inner diameter of the limit space is not larger than the maximum diameter of the limit clamp 9; when the large hook is lifted, the limit clamp 9 can abut against the lower surface of the limit mechanism, thereby driving the pulley 12 to move upward through the supporting mechanism.

[0061] Since the limiting mechanism in the present application is clearance-matched with the hook rod, when the large hook needs to hang the faucet, the limiting mechanism can rotate relative to the large hook, so that the limiting mechanism only plays the function of driving the large hook to move, thereby avoiding the problem of twisting of the large hook.

[0062] During operation, first fasten the limit clamp 9 to the outer wall of the hook rod, and make the limit clamp 9 located on the lower surface of the limit mechanism. When the large hook is lifted, the limit clamp 9 moves up with the hook rod. When the limit clamp 9 abuts against the limit mechanism, since the inner diameter of the limit space is not greater than the maximum diameter of the limit clamp 9, the limit mechanism can be driven to move up, so that the pulley 12 can move up with the large hook.

[0063] It should be noted here that, since the limiting mechanism and the limiting clamp 9 in the present application do not produce a rigid connection, when hanging the faucet, the first arm 1 and the second arm 2 can be rotated in the horizontal direction, and the sleeve rod 6 can also be extended and retracted, thereby expanding the moving range of the large hook, so that the large hook can be directly moved to a suitable position to hang the faucet without frequently disassembling the lifting device, thereby improving the working efficiency to a certain extent and reducing the frequency of high-altitude operations of operators.

[0064] Specifically, Figure 1-Figure 3As shown, the limiting clamp 9 includes a first limiting clamp 901 and a second limiting clamp 902; the first limiting clamp 901 and the second limiting clamp 902 are both semicircular structures, and a second connecting portion 10 is formed at both ends; a second connecting hole is opened on the second connecting portion 10, and the second connecting member 11 passes through the second connecting holes of the first limiting clamp 901 and the second limiting clamp 902 in sequence, so that the first limiting clamp 901 and the second limiting clamp 902 are connected.

[0065] The structure of the second connection part 10 in the present application is the same as that of the first connection part 7, and preferably, the second connection member 11 is also a bolt. When the bolt passes through the second connection hole, the first limiting clamp 901 and the second limiting clamp 902 can be locked by a nut.

[0066] It should be additionally explained here that the first connecting hole and the second connecting hole in the present application may also be screw holes, and the locking of the limiting mechanism and the limiting clamp 9 is achieved by cooperating with the threads of the screw.

[0067] Figure 4 Schematic diagram of the overall structure of the righting device 14 in the lifting and righting system provided in an embodiment of the present invention.

[0068] In addition, if Figure 1-Figure 4 As shown, the present invention also provides a lifting and righting system, including the above-mentioned lifting device and the righting device 14 and the lifting ring 15; the righting device 14 is arranged on the pulley 12 and is located below the lifting device; the lifting ring 15 is installed on the righting device 14, and the lifting ring 15 is connected to the large hook.

[0069] Since the elevator 16 is connected to the hook through the lifting ring 15, the pulley 12 is likely to press the slide rail 13 when the straightening device 14 straightens the elevator 16, thereby causing the pulley 12 to get stuck. Therefore, the present application sets both the straightening device 14 and the lifting device on the pulley 12. When the hook is lifted, the limit clamp 9 can abut against the bottom of the limit mechanism, thereby pushing the limit mechanism to move upward, and then the power can be transmitted to the pulley 12 through the limit mechanism and the supporting mechanism, so that the pulley 12 moves on the slide rail 13, driving the straightening mechanism to move upward. Therefore, the technical problem that the pulley 12 is likely to get stuck when the straightening mechanism straightens the elevator 16 can be avoided to a certain extent.

[0070] The present invention further provides a drilling rig derrick, comprising the above-mentioned lifting and righting system and a derrick body; the slide rail 13 is arranged on the derrick body along the vertical direction.

[0071] The slide rail 13 in the present application is in multiple sections and is laid on the derrick body along the height direction of the derrick body. The pulley 12 can move up and down along the laid slide rail 13 .

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device, characterized in that: It includes a sliding mechanism, a supporting mechanism and a limiting mechanism; The sliding mechanism comprises a slide rail arranged in a vertical direction, and a pulley is arranged on the slide rail; The support mechanism comprises a first support arm and a second support arm arranged in a horizontal direction, one end of the first support arm and the second support arm are respectively rotatably connected to the pulley, and the first support arm and the second support arm can rotate in a horizontal direction relative to the pulley; the first support arm and the second support arm each comprise a sleeve and a sleeve rod, the sleeve rod is arranged in the sleeve, and one end of the sleeve rod protrudes from the sleeve; the sleeve rod can extend or retract along the extension direction of the sleeve; The limiting mechanism includes a first limiting member and a second limiting member, the first limiting member and the second limiting member are respectively rotatably connected to one end of the first support arm and the second support arm away from the pulley; the first limiting member and the second limiting member can be buckled to form a limiting space, and the limiting space is adapted to the hook rod of the large hook; the first limiting member and the second limiting member are both semicircular structures, and both ends are formed with a first connecting portion; the first connecting portion is provided with a first connecting hole, and the first limiting member and the second limiting member are connected by the first connecting member passing through the first connecting holes of the first limiting member and the second limiting member in sequence; The lifting device further comprises a limiting clamp, the limiting clamp is located below the limiting mechanism, the limiting mechanism and the hook rod are clearance-matched, the limiting clamp matches the hook rod and is fastened to the hook rod; The inner diameter of the limiting space is not greater than the maximum diameter of the limiting clamp; When the large hook is lifted, the limiting clamp can abut against the lower surface of the limiting mechanism, thereby driving the pulley to move upward through the supporting mechanism.

2. The lifting device according to claim 1, characterized in that: A limiting hole is provided on the sleeve in a horizontal direction, and a limiting protrusion is provided on the sleeve rod. The limiting protrusion is located in the limiting hole to prevent the sleeve rod from sliding out of the sleeve.

3. The lifting device according to claim 2, characterized in that: A first connecting assembly is provided at one end of the sleeve rod of the first support arm and the second support arm away from the sleeve; The first connecting assembly includes a first connecting plate, a second connecting plate, a first connecting shaft and a second connecting shaft; The first connecting plate is rotatably connected to the sleeve rod of the first supporting arm via the first connecting shaft, and the first limiting member is fixedly connected to the first connecting plate so that the first limiting member can rotate relative to the sleeve rod of the first supporting arm; The second connecting plate is rotatably connected to the sleeve rod of the second supporting arm via the second connecting shaft, and the second limiting member is fixedly connected to the second connecting plate so that the second limiting member can rotate relative to the sleeve rod of the second supporting arm.

4. The lifting device according to claim 1, characterized in that: A second connecting assembly is provided on both side walls of the pulley, and the second connecting assembly includes a third connecting plate, a fourth connecting plate, a third connecting shaft and a fourth connecting shaft; One end of the first arm away from the first limiting member is rotatably connected to the third connecting plate via the third connecting shaft, and one end of the second arm away from the second limiting member is rotatably connected to the fourth connecting plate via the fourth connecting shaft.

5. The lifting device according to any one of claims 1 to 4, characterized in that: The limiting clamp comprises a first limiting clamp and a second limiting clamp; The first limiting clamp and the second limiting clamp are both semicircular structures, and both ends are formed with a second connecting portion; The second connecting portion is provided with a second connecting hole, and the second connecting member passes through the second connecting holes of the first limiting clamp and the second limiting clamp in sequence, so that the first limiting clamp and the second limiting clamp are connected.

6. A lifting and righting system, characterized in that: It comprises the lifting device as described in any one of claims 1 to 5 above, as well as the righting device, the lifting ring and the lifting card; the righting device is arranged on the pulley and is located below the lifting device; the lifting ring is installed on the righting device, and one end of the lifting ring is connected to the lifting card, and the other end is connected to the large hook.

7. A drilling rig derrick, characterized in that: It comprises the lifting and righting system and the derrick body as described in claim 6 above; the slide rail is arranged on the derrick body along the vertical direction.

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