A continuous dogleg structure and drilling tool transport system

Abstract

The present application relates to oil and gas exploitation equipment field, especially a kind of continuous fender structure and drilling tool removal system, the continuous fender structure includes fender, several support components are hinged on the fender, several support components are arranged along the longitudinal direction of the fender, the end of several support components away from the fender is hinged and fixed by pin shaft, at least one end of the support component away from the fender is drivingly connected power mechanism, the power mechanism is used to drive the support component rotation, drive the fender to lift, transition block is provided on the fender, transition surface is formed above the top surface of the fender, the transition surface is connected with the lateral sides of the fender, and the fender is provided with surrounding plate. To provide effective continuous protection, and transition connection fender lateral sides, so that the setting of fender structure even occupies removal space, but also can meet the smooth transportation of the member to be removed. The drilling tool removal system uses the above continuous fender structure.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction equipment, and in particular to a continuous stop bar structure and a drill string transport system. Background Technology

[0002] Powered catwalks are conveying equipment used in the oil and gas drilling and production field. They are used to move drilling tools between the ground and the drilling platform during the extraction process. Since their application, powered catwalks have been designed to automate and unmanned the drilling tool transportation process. How to ensure the safety and reliability of the drilling tools on the catwalk during the transportation process and to maximize the effective protection of the drilling tools during drilling and casting is particularly important. In order to ensure the safety of drilling tool transportation, multiple stop mechanisms are generally set on the support beams of the catwalk used to support the transportation of drilling tools. The stop mechanisms are mainly used to prevent the drilling tools from falling out of the V-groove of the support beam. The existing stop mechanisms are set independently and can be raised and lowered synchronously or always kept in the raised state. For example, Chinese utility model patent, an automated power catwalk device (publication number CN209277832U), discloses that the automated power catwalk device includes a stop mechanism, which includes a base plate, a stop rod, a stop rod sleeve, a connecting rod, a spring seat, a spring, and a top rod, serving to block the drill bit and prevent it from rolling sideways. Multiple stop mechanisms can be arranged at intervals on both sides of the drill bit conveying device. Chinese utility model patent, a power catwalk (publication number CN219365975U), discloses that stop mechanisms are provided on both sides of the cloud beam along its length, that is, on both sides of the groove, to prevent the drill bit on the cloud beam from coming off the side. The stop mechanism can also be designed as a structure in which the extension and retraction of the rod are controlled by an electric cylinder.

[0003] However, the spaced-out stop mechanisms cannot cover the entire length of the drill bit. During the casting process, the drill bit is prone to slipping out between adjacent stop mechanisms. Existing automated catwalk structures do not allow for the stop mechanisms to be set as a continuous structure along the length of the drill bit. This is mainly because: if the stop mechanisms were set as a continuous structure along the length of the drill bit, they would occupy a large space between the support beam and the feeding / discharging mechanism, creating a wide gap between the feeding / discharging mechanism and the support beam. When the stop mechanism is in a high position, it will block the connection between the support beam and the feeding / discharging mechanism. When it is in a low position, the drill bit may fall through the gap between the support beam and the feeding / discharging mechanism, posing a safety hazard to the movement of the drill bit. At the same time, the stop mechanisms are driven to rise and fall by electric or hydraulic cylinders. If the drill bit rolls over the lower stop mechanism, the stop mechanism will be subjected to the impact of the drill bit, affecting the overall structural stability and service life of the catwalk.

[0004] Therefore, there is an urgent need for a technical solution to address the technical problem that the existing baffle mechanisms arranged at intervals on the power catwalk cannot effectively and continuously protect the drill string, thus posing a risk of the drill string falling from a height. Summary of the Invention

[0005] The purpose of this invention is to address the technical problem that the existing intermittently arranged stop bar mechanism on the power catwalk cannot effectively and continuously protect the drill bit, posing a risk of the drill bit falling from a height, and to provide a continuous stop bar structure and drill bit transportation system.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A continuous stop bar structure includes a stop bar with a plurality of support members hinged to it. The support members are arranged longitudinally along the stop bar, and the ends of the support members away from the stop bar are hinged and fixed by pins. At least one of the support members is driven to a power mechanism at the end away from the stop bar. The power mechanism is used to drive the support members to rotate and drive the stop bar to rise and fall. A transition block is provided on the stop bar, and the transition block forms a transition surface above the top surface of the stop bar. The transition surface connects the two lateral sides of the stop bar. A surrounding plate is provided on the stop bar.

[0007] This invention discloses a continuous stop bar structure. The stop bar of the rod-shaped structure is relatively long and equipped with a surrounding plate. Through its own length and the surrounding plate structure, it can effectively and continuously protect the space below the high-positioned stop bar. At the same time, the transition block set on the stop bar can provide a transition surface to connect the two sides of the stop bar laterally, so that the top surface of the stop bar can meet the smooth passage of the component being moved. Even if the stop bar structure occupies the space for moving, it can still meet the smooth transportation of the component. When applied to the obstruction of drilling tools, the continuous protection of the stop bar can avoid the risk of the drilling tool falling from a height, and the transition connection of the transition block can allow the drilling tool to smoothly pass over the stop bar, meeting the needs of drilling tool movement. The stop bar structure will not affect the smooth movement of the drilling tool due to space occupation.

[0008] In a preferred embodiment of the present invention, the length of the stop rod is approximately equal to the length of the drill string, and transition blocks are respectively provided at both ends of the stop rod along its length. This reduces the number of transition blocks while ensuring functionality, taking into account the characteristics of the drill string length, thereby reducing the complexity of the stop rod structure and lowering costs.

[0009] In a preferred embodiment of the present invention, the transition block is clamped onto the stop bar. This ensures a tight connection between the transition block and the stop bar, allowing the clamping surface to transfer and disperse the force when the transition block is subjected to the impact of the transported component, thereby improving structural stability and extending the service life of the structure.

[0010] In a preferred embodiment of the present invention, the transition block includes a snap-fit ​​portion and a support portion disposed on the top of the snap-fit ​​portion. The snap-fit ​​portion is used to snap the connection to the stop bar. The top surface of the support portion is provided with the transition surface, and the support portion is provided with a recessed channel penetrating the transition surface. This allows the transition block to provide a passage for irregular structures such as drill bit joints through the recessed channel, ensuring that the moved component can smoothly traverse the stop bar structure, thus expanding the applicability of the connecting stop bar structure.

[0011] In a preferred embodiment of the present invention, the transition surface includes a first supporting inclined surface, a supporting plane, and a second supporting inclined surface arranged sequentially along the transverse direction of the stop bar. This facilitates the smooth transfer of the transported component in the transverse direction of the stop bar by using the first and second supporting inclined surfaces, reducing the direct impact on the transition block when the transported component is overturned.

[0012] In a preferred embodiment of the present invention, the support portion forms cantilever portions on both sides of the stop bar, with the lengths of the cantilever portions on both sides being different. This allows the stop bar structure to overlap with the adapting structures on both sides of the lateral side via the cantilever portions. The longer the overlap length, the more stable the overlap between the transition block and the overlapped structure, reducing impact force and improving structural stability during the movement of the transported component.

[0013] In a preferred embodiment of the present invention, the transition block includes a connecting plate and two parallel transition plates. The connecting plate is inserted into and connected to the two transition plates respectively, forming the recessed channel between the two transition plates. The connecting plate is detachably connected to the stop rod. The transition block has a simple structure, is easy to install, reduces the material used in the transition block, lowers the manufacturing cost of the continuous stop rod structure, and facilitates the widespread application of the continuous stop rod structure.

[0014] As a preferred embodiment of the present invention, the supporting member is provided with a self-locking section, and the stop bar, when in the low position, can abut against the self-locking section to achieve rotational self-locking. When the stop bar is in the low position, it is located on the self-locking section, and the supporting member cannot rotate. When the stop bar is subjected to the pressure of being overturned by the transport mechanism above, the force can be dispersed through the stop bar and the supporting member, avoiding the power mechanism from bearing load and impact, while effectively saving structural space.

[0015] A drill bit transport system includes a support beam with a V-groove for transporting the drill bit. A continuous stop bar structure, as described above, is provided on both sides of the support beam. The stop bars are parallel to the support beam, and a pin is hinged to the support beam.

[0016] The drill bit transport system of the present invention, by adopting the above-mentioned continuous stop bar structure, can effectively protect the safety of the drill bit within the blocking range of the stop bar, and minimize the risk of the drill bit falling from a height. At the same time, through the transition connection of the transition block, the drill bit can smoothly pass over the stop bar. When the stop bar is in a low position, it can ensure that the drill bit can be smoothly moved into or out of the V-groove, avoiding the space occupied by the stop bar structure from affecting the safe transport of the drill bit.

[0017] As a preferred embodiment of the present invention, it further includes a catwalk base and a feeding / discharging mechanism, wherein the support beam is adapted to be disposed on the catwalk base, the continuous stop structure is disposed between the support beam and the feeding / discharging mechanism, and the transition block can overlap and connect the feeding / discharging mechanism and the support beam.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of the continuous stop bar structure of the present invention are: 1. The rod-shaped structural member has a long stop bar and is equipped with a surrounding plate. It can block the space below the high-positioned stop bar through its own length and the surrounding plate structure, providing effective and continuous protection. 2. The transition block set on the stop bar can provide a transition surface to connect the two sides of the stop bar laterally, so that the top surface of the stop bar can meet the smooth passage of the component being moved. Even if the stop bar structure occupies the moving space, it can still meet the smooth transportation of the component being moved.

[0019] The beneficial effects of the drill string transport system of the present invention are: 1. By adopting the above-mentioned continuous stop bar structure, the safety of the drilling tool can be effectively protected within the blocking range of the stop bar, and the risk of the drilling tool falling from a height can be minimized. 2. Through the transitional connection of the transition block, the drill bit can smoothly pass over the stop bar. When the stop bar is in a low position, it can ensure that the drill bit can be smoothly moved into or out of the V-groove, avoiding the space occupied by the stop bar structure from affecting the safe movement of the drill bit. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a continuous stop bar structure according to the present invention; Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle; Figure 3 This is a schematic diagram illustrating the operating principle of a continuous stop bar structure according to Embodiment 1; Figure 4 This is a side view of a continuous stop bar structure according to Embodiment 1; Figure 5 yes Figure 4 Schematic diagram of the structure of BB; Figure 6This is an axonometric view of a continuous stop bar structure according to Embodiment 1; Figure 7 yes Figure 6 A magnified structural diagram of section C in the middle; Figure 8 yes Figure 6 Corresponding side view; Figure 9 This is a schematic diagram of the material loading process of the drill bit transfer system in Example 5. Figure 1 ; Figure 10 This is a schematic diagram of the material loading process of the drill bit transfer system in Example 5. Figure 2 ; Figure 11 This is a schematic diagram of the material loading process of the drill bit transfer system in Example 5. Figure 3 ; Figure 12 This is a schematic diagram of the unloading process of the drill string transfer system in Example 5. Figure 1 ; Figure 13 This is a schematic diagram of the unloading process of the drill string transfer system in Example 5. Figure 2 .

[0021] icon: 1-Stop bar, 2-Supporting component, 21-Self-locking section, 3-Pin, 4-Power mechanism, 5-Transition block, 51-Transition surface, 511-First support inclined surface, 512-Supporting plane, 513-Second support inclined surface, 52-Snap-fit ​​part, 53-Supporting part, 54-Cantilever part, 55-Recessed channel, 56-Transition plate, 57-Connecting plate, 6-Enclosure plate, 7-Supporting beam, 8-Catway base, 9-Infeed / Discharge mechanism, 91-Divider pin, 10-Support leg, 20-Tilting mechanism. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] Example 1 like Figures 1-8As shown, a continuous stop bar structure in this embodiment includes a stop bar 1 with a rod-shaped structure. Three support members 2 are hinged to the stop bar 1. The three support members 2 are arranged longitudinally along the stop bar 1. The ends of two of the support members 2 away from the stop bar 1 are hinged and fixed by a pin 3. The end of one of the support members 2 away from the stop bar 1 is driven and connected to a power mechanism 4. The power mechanism 4 is used to drive the support member 2 to rotate, thereby driving the stop bar 1 to rise and fall. A transition block 5 is provided on the stop bar 1. The transition block 5 forms a transition surface 51 above the top surface of the stop bar 1. The transition surface 51 connects the two lateral sides of the stop bar 1. A surrounding plate 6 is provided on the stop bar 1.

[0025] In this embodiment, a continuous stop bar structure is provided. The number of support members 2 can be adjusted according to actual conditions. The hinge axis between the support member 2 and the stop bar 1 is arranged laterally along the stop bar 1. That is, the support member 2 can be hinged to the lateral side of the stop bar 1. The axis of the pin 3 is arranged in the same direction as the hinge axis. The end of the pin 3 away from the support member 2 is hinged to the structure using the continuous stop bar structure, so that the support member 2 can rotate relative to the stop bar 1 through the upper pin 3 and is fixed to the structure using the continuous stop bar structure through the lower pin 3. One of the pins 3 serves as a force transmission pin. One end of the force transmission pin is connected to the support member 2 by a key to achieve relative fixation between the two. The end of one end of the force transmission pin or the connecting mechanism provided at the end is hinged to the power mechanism 4 to provide rotational force to the force transmission pin, preferably a drive cylinder. The other end is connected to the structure using the continuous stop bar structure, such as... Figure 3 As shown, during use, the drive cylinder drives the force transmission pin shaft equipped with a flat key to rotate. The drive cylinder transmits the rotational power to the upper pin shaft 3 through the support member 2, which in turn drives the parallelogram composed of the support member 2 and the stop rod 1 to rotate along the lower pin shaft 3, causing the force transmission pin shaft to drive the support member 2 to rotate, which in turn drives the stop rod 1 to rise and fall.

[0026] In this embodiment, a continuous stop bar structure is provided. The stop bar 1 is relatively long, and a surrounding plate 6 is provided on the transverse inner side of the stop bar 1. The surrounding plate 6 can be provided along the entire length of the stop bar 1, or it can be provided in segments according to the actual situation. When the segments are provided, the surrounding plate 6 can be staggered from the position of the support member 2, so that the support member 2 can be provided on the transverse inner side of the stop bar 1, or it can be provided on the transverse outer side of the stop bar 1. The space below the stop bar 1, which is located at a high position, can be shielded by the length of the stop bar 1 itself and the structure of the surrounding plate 6, providing effective continuous protection.

[0027] Specifically, when the enclosure panel 6 is continuously installed on the inner side of the stop bar 1, the support member 2 is hinged to the outer side of the stop bar 1. When the enclosure panel 6 is continuously installed on the outer side of the stop bar 1, the support member 2 is hinged to the inner side of the stop bar 1 to avoid positional interference between the enclosure panel 6 and the support member 2 during operation. When the enclosure panel 6 is segmented, only the position of the support member 2 needs to be staggered. The enclosure panel 6 can be installed on either the inner or outer side of the stop bar 1, and the support member 2 can also be hinged to either the inner or outer side of the stop bar 1 without interference during operation. Figure 5 As shown, this embodiment uses a 6-segment enclosure with a support member 2 hinged to the inner side of the stop bar 1 as an example for demonstration and explanation.

[0028] In this embodiment, a continuous stop bar structure is provided. The transition block 5 on the stop bar 1 can provide a transition surface 51 to connect the two sides of the stop bar 1 laterally, so that the top surface of the stop bar 1 can meet the smooth passage of the component being moved. Even if the continuous stop bar structure occupies the moving space, it can still meet the smooth transportation of the component being moved.

[0029] Preferably, the transition surface 51 includes a first supporting inclined surface 511, a supporting plane 512, and a second supporting inclined surface 513 arranged sequentially along the transverse direction of the stop bar 1. The first supporting inclined surface 511 and the second supporting inclined surface 513 prevent the transition block 5 from forming an excessively high step. When the component being moved needs to be rolled over from above the stop bar 1, it is less likely to collide with the transition block 5 when entering the transition surface 51. This assists in the smooth transfer of the component in the transverse direction of the stop bar 1, achieving seamless rolling of the component and reducing the direct impact on the transition block 5 when the component is rolled over.

[0030] like Figures 4-8 As shown in this embodiment, a continuous stop bar structure is used when the drill string automated catwalk acts as a barrier. Two continuous stop bar structures are arranged in parallel and opposite directions. The length of the stop bar 1 is approximately the same as the length of the drill string. Transition blocks 5 are respectively provided at both ends of the stop bar 1 along its length direction. The continuous protection provided by the stop bar 1 can prevent the drill string from falling from a height. The transition connection provided by the transition blocks 5 can allow the drill string to smoothly pass over the stop bar 1, meeting the needs of drill string transportation. The continuous stop bar structure will not affect the smooth transportation of the drill string due to space occupation.

[0031] Example 2 As shown in the figure Figure 8 As shown, in this embodiment of a continuous stop bar structure, based on embodiment 1, the transition block 5 includes a snap-fit ​​part 52 and a support part 53 disposed on the top of the snap-fit ​​part 52. The snap-fit ​​part 52 is used to snap and connect the stop bar 1. The top surface of the support part 53 is provided with the transition surface 51, and the support part 53 is provided with a recessed channel 55 penetrating the transition surface 51.

[0032] In this embodiment, a continuous stop bar structure is provided, wherein the transition block 5 is clamped onto the stop bar 1, which is easy to install and can make the transition block 5 and the stop bar 1 tightly connected. The clamping surfaces are formed on both sides of the stop bar 1, which can transfer the force above the transition block 5 to the stop bar 1 for dispersion when the transition block 5 is subjected to the impact force of the moved component, thereby improving the structural stability and extending the service life of the structure.

[0033] In this embodiment, a continuous stop bar structure is provided by a transition block 5 through a recessed channel 55, which allows irregular structures such as drill joints to pass through. This enables the continuous stop bar structure to adapt to the seamless rolling of drill pipes with joints and drill collars and casings without joints, ensuring that the transported components can smoothly traverse the continuous stop bar structure and expanding the applicability of the continuous stop bar structure.

[0034] In this embodiment, a continuous stop bar structure is provided, wherein the support portion 53 forms cantilever portions 54 on both sides of the stop bar 1, and the lengths of the cantilever portions 54 on both sides are different. The cantilever portions 54 enable the continuous stop bar structure to overlap with the adapting structures on both sides of the lateral side. The longer the overlap length, the more stable the overlap between the transition block 5 and the overlapped structure, which reduces impact force and improves structural stability during the transport of the component.

[0035] Example 3 like Figure 2 As shown, in this embodiment of a continuous stop bar structure, based on embodiments 1 and 2, the transition block 5 includes a connecting plate 57 and two parallel transition plates 56. The connecting plate 57 is inserted into and connected to the two transition plates 56 respectively, and the recessed channel 55 is formed between the two transition plates 56. The connecting plate 57 is detachably connected to the stop bar 1.

[0036] In this embodiment, a continuous stop bar structure is provided. The transition block 5 is assembled from plate structural components, which is simple in structure and easy to install. Compared with the integral structural component transition block 5, it can reduce the material used for the transition block 5, reduce the manufacturing cost of the continuous stop bar structure, and facilitate the promotion and application of the continuous stop bar structure.

[0037] Specifically, in this embodiment, the connecting plate 57 is arranged horizontally, and studs are welded to the bottom surface of the connecting plate 57. The opposite sides of the connecting plate 57 protrude partially along the plate surface to be inserted into the slots pre-set on the transition plate 56. When the transition block 5 is installed, the two transition plates 56 are held on the stop rod 1 by passing the studs on the connecting plate 57 through the stop rod 1, and are inserted into the connecting plate 57 through the slots to fix the other end of the studs. This achieves the effect of pressing the transition plate 56 onto the top of the stop rod 1 by the connecting plate 57.

[0038] It is understandable that through holes can also be provided on the connecting plate 57 according to the actual situation, so as to replace the studs with a detachable bolt structure and realize the convenient installation of the transition block 5 of the structure.

[0039] Example 4 like Figure 6-7 As shown, in this embodiment of a continuous stop bar structure, based on embodiments 1-3, a self-locking section 21 is provided on the support member 2, and the stop bar 1 can abut against the self-locking section 21 to achieve rotational self-locking when it is in the low position.

[0040] In this embodiment, a continuous stop bar structure is provided. The self-locking section 21 is formed by a protrusion on the same side of the support member 2 and the stop bar 1. The protrusion is cam-shaped. When the stop bar 1 is in a high position, the support member 2 is in a vertical state, and the support direction of the support member 2 is perpendicular to the length direction of the stop bar 1. At this time, the self-locking section 21 is inclined relative to the stop bar 1. When the stop bar 1 is in a low position, the support member 2 is in a relatively horizontal state, close to the stop bar 1, and the stop bar 1 is in contact with the self-locking section 21, so that the support member 2 cannot rotate, thus achieving self-locking and limiting. When the stop bar 1 is subjected to the pressure when it is overturned by the transfer mechanism above, the force can be dispersed through the stop bar 1 and the support member 2, which can effectively protect the power mechanism 4 from load and impact, and at the same time effectively save structural space.

[0041] Example 5 like Figures 1-13 As shown, this embodiment provides a drill bit transport system, including outriggers 10, a feeding / discharging mechanism 9, a catwalk base 8, and a support beam 7. The support beam 7 is provided with a V-groove for transporting the drill bit and a turning mechanism 20. The support beam 7 is adapted to be mounted on the catwalk base 8. The feeding / discharging mechanism 9 is provided with a material distribution pin 91. A continuous stop bar structure as described in Embodiment 4 is provided on both sides of the support beam 7. The continuous stop bar structure is located between the support beam 7 and the feeding / discharging mechanism 9. The transition block 5 can overlap and connect the feeding / discharging mechanism 9 and the support beam 7. The stop bar 1 is arranged parallel to the support beam 7. The pin 3 is hinged and fixed to the support beam 7.

[0042] The following explanation uses pipe fittings in the drilling and production process as an example.

[0043] like Figures 9-11As shown, when the drill bit transfer system of this embodiment is loading material, the hydraulic cylinder of the outrigger 10 moves up to tilt it. The pipe rolls along the direction of the arrow to the material distribution pin 91 by its weight and stops. The infeed and discharge hydraulic cylinders lift and tilt it. At this time, the continuous stop bar structure located between the support beam 7 and the infeed and discharge mechanism 9 is in a low position, and the continuous stop bar structure on the other side is in a high position. It can effectively resist impact and protect the pipe from over-positioning. After the pipe enters the support beam 7, the stop bar 1 on the feeding side of the support beam 7 is raised, so that the support beam 7 can be transferred from the ground to the platform.

[0044] like Figures 11-13 As shown, when the drill bit transport system of this embodiment is unloading, the support beam 7 is lowered from the platform to the ground, the tipping mechanism 20 actuates the hydraulic cylinder, and the pipe is rolled from the support beam 7 along the transition block 5 and the feeding and discharging mechanism 9 to the support leg 10 by gravity and impact, thus realizing the unloading process.

[0045] The drill string transport system of this embodiment, by adopting the above-mentioned continuous stop bar structure, can effectively protect the safety of the drill string within the blocking range of the stop bar 1, and minimize the risk of the drill string falling from a height. At the same time, through the transition connection of the transition block 5, the drill string can smoothly pass over the stop bar 1. When the stop bar 1 is in a low position, it can ensure that the drill string can be smoothly moved into or out of the V-groove, avoiding the space occupied by the continuous stop bar structure from affecting the safe transport of the drill string.

[0046] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous stop bar structure, characterized in that, Includes a stop bar (1), on which several support members (2) are hinged, the several support members (2) are arranged longitudinally along the stop bar (1), and the ends of the several support members (2) away from the stop bar (1) are hinged and fixed by a pin (3). At least one of the support members (2) is driven and connected to a power mechanism (4) at the end away from the stop bar (1). The power mechanism (4) is used to drive the support members (2) to rotate and drive the stop bar (1) to rise and fall. A transition block (5) is provided on the stop bar (1). A transition surface (51) is provided on the top surface of the stop bar (1) above the transition block (5). The transition surface (51) connects the two sides of the stop bar (1) laterally. A surrounding plate (6) is provided on the stop bar (1). The transition block (5) includes a snap-fit ​​part (52) and a support part (53) disposed on the top of the snap-fit ​​part (52). The snap-fit ​​part (52) is used to snap and connect the stop bar (1). The top surface of the support part (53) is provided with the transition surface (51). The support part (53) is provided with a recessed channel (55) penetrating the transition surface (51). The transition surface (51) includes a first support inclined surface (511), a support plane (512) and a second support inclined surface (513) arranged sequentially along the transverse direction of the stop bar (1).

2. The continuous stop bar structure as described in claim 1, characterized in that, The length of the stop rod (1) is equal to the length of the drill bit, and the transition blocks (5) are respectively provided at both ends of the stop rod (1) along the length direction.

3. The continuous stop bar structure as described in claim 1, characterized in that, The transition block (5) is engaged on the stop bar (1).

4. The continuous stop bar structure as described in claim 1, characterized in that, The support (53) forms cantilever (54) on both sides of the stop (1), and the lengths of the cantilever (54) on both sides are different.

5. A continuous stop bar structure as described in claim 1, characterized in that, The transition block (5) includes a connecting plate (57) and two parallel transition plates (56). The connecting plate (57) is inserted into the two transition plates (56) respectively, and the recessed channel (55) is formed between the two transition plates (56). The connecting plate (57) is detachably connected to the stop bar (1).

6. A continuous stop bar structure as described in claim 1, characterized in that, The support member (2) is provided with a self-locking section (21), and the stop bar (1) can abut against the self-locking section (21) to achieve rotational self-locking when it is in a low position.

7. A drill string transport system, characterized in that, The system includes a support beam (7), which is provided with a V-groove for moving the drilling tool. The support beam (7) has a continuous stop bar structure as described in any one of claims 1-6 on its lateral sides. The stop bar (1) is arranged parallel to the support beam (7), and the pin (3) is hinged to the support beam (7).

8. The drill string transport system as described in claim 7, characterized in that, It also includes a cat walkway base (8) and a feeding / discharging mechanism (9). The support beam (7) is adapted to be installed on the cat walkway base (8). The continuous stop structure is installed between the support beam (7) and the feeding / discharging mechanism (9). The transition block (5) can overlap and connect the feeding / discharging mechanism (9) and the support beam (7).

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