Hydraulic elevator and safe working method thereof

Abstract

The invention discloses a hydraulic elevator and a safe working method thereof, and relates to the field of petroleum and natural gas drilling, the hydraulic elevator comprises a main body and a control system, the main body is provided with a door opening and closing mechanism, an on-load door opening prevention mechanism, a door closing detection mechanism, a load detection mechanism, a door closing trigger mechanism and a door opening detection mechanism; the working state of the hydraulic elevator can be fed back in real time, mistaken door opening operation under the condition that a drilling tool is carried is effectively avoided, and working safety of the hydraulic elevator is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of oil and gas drilling, in particular to a hydraulic elevator and a safe working method thereof. Background Art

[0002] Hydraulic elevators are one of the lifting equipment of oil drilling rigs. In drilling projects, hydraulic elevators are mainly used to lift drilling tools such as drill pipes, tubings and casings. They are suspended on the lifting system to pull out or lower drilling tools, tubings, casings, etc. into the wellbore. They can effectively reduce the labor intensity of large-tonnage elevators during operation, reduce the time of opening and closing the elevators, and lay a structural foundation for the full realization of automated operation of top drive drilling rigs.

[0003] Most of the time, the hydraulic elevator is at high altitude when working, and its working status is not easy to observe. The hydraulic elevator is located in the lifting system of the drilling rig, hanging the drilling tools and bearing the weight of the drilling tools. The reliability of its work is crucial to the safety of drilling operations. Therefore, the optimization of the hydraulic elevator, how to make it easy to observe its working status and reliable safety is the research direction of technicians in this field. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic elevator and a safe working method thereof in view of the above-mentioned problems, which can provide real-time feedback on the working status of the hydraulic elevator and effectively avoid accidental door opening operation when carrying drilling tools, thereby ensuring the working safety of the hydraulic elevator.

[0005] The technical solution adopted by the present invention is as follows: a hydraulic elevator, comprising a main body, on which a door opening and closing mechanism, a load-protected door opening prevention mechanism, a door opening and closing detection device and a control system are provided; wherein:

[0006] The door opening and closing mechanism comprises a door opening and closing driving mechanism, a second door body hinged to one side of the main body, and a first door body hinged to the other side of the main body; the door opening and closing driving mechanism can drive the second door body and the first door body to move closer to each other to close the door, or / and drive the second door body and the first door body to move away from each other to open the door;

[0007] The load-proof door opening prevention mechanism is linked with the door opening and closing mechanism to lock the door opening and closing mechanism in the closed state when the hydraulic elevator is under load;

[0008] The door opening and closing detection device is used to detect the door opening and closing status of the hydraulic elevator and feed back the door opening and closing status to the control system.

[0009] Furthermore, the door opening and closing mechanism also includes a bolt body, one end of which is hinged on the second door body, and the other end of the bolt body can contact the first door body to achieve the bolt body spanning the second door body and the first door body; the load-bearing anti-door opening mechanism locks the bolt body spanning the second door body and the first door body to achieve the closed state of the locked door opening and closing mechanism.

[0010] Furthermore, the load-carrying anti-door-opening mechanism is arranged on the first door body, and comprises a first door body bushing for bearing the drilling tool, a locking pin for locking the door latch body, and a load-carrying linkage mechanism; the first door body bushing is slidably connected to the first door body in the vertical direction, and the load-carrying linkage mechanism is arranged between the first door body bushing and the locking pin, and when the first door body bushing carries the drilling tool and moves downward, the locking pin locks the door latch body through the load-carrying linkage mechanism.

[0011] Furthermore, the load-bearing linkage mechanism includes a lever, which is rotatably connected to the first door body, a pressure pin is arranged between one end of the lever and the first door body core, and both ends of the pressure pin are respectively abutted against the first door body core and the lever; the other end of the lever abuts against the bottom of a locking pin, and the locking pin passes through the first door body and is slidably connected to the first door body, and a first elastic member is arranged between the locking pin and the first door body, and when the locking pin passes through the first door body to lock the door latch body, the first elastic member is in a state of having elastic potential energy.

[0012] Further, the door opening and closing detection device includes a door closing detection mechanism provided on the first door body;

[0013] The door closing detection mechanism includes a door closing detection linkage mechanism and a door closing detection machine-controlled valve that can generate a signal after being pressurized. The door closing detection machine-controlled valve is used to connect with the control system, and the door latch body can act on the door closing detection machine-controlled valve through the door closing detection linkage mechanism.

[0014] Further, the door closing detection linkage mechanism includes an eccentric block, one end of which is hinged to the first door body, and when the latch body is in a position state restricting the second door body and the first door body, the other end of the eccentric block abuts against the latch body, and the latch body supports the other end of the eccentric block;

[0015] The middle part of the eccentric block is provided with a protrusion, and the protrusion acts on the door closing detection machine control valve when the door latch body and the eccentric block abut against each other.

[0016] Furthermore, the door opening and closing detection device further comprises a door opening detection mechanism arranged on the main body;

[0017] The door opening detection mechanism includes a door opening detection rod and a door opening detection machine-controlled valve. The door opening detection rod passes through the wall of the main body and is slidably connected to the main body. After the door opening detection rod passes through the wall of the main body, one end of the door opening detection rod is located at the hinged position between the second door body and the main body, so that the second door body will move closer to the door opening detection rod during the opening process, and will move away from the door opening detection rod during the closing process; the other end of the door opening detection rod acts on the door opening detection machine-controlled valve through the door opening detection linkage mechanism. The door opening detection machine-controlled valve is installed on the main body and connected to the control system.

[0018] Furthermore, the door opening detection linkage mechanism is a wedge-shaped surface arranged on the door opening detection rod. When the door opening detection rod is pushed by the second door body, the wedge-shaped surface will enter the spatial position where the door opening detection machine-controlled valve is located to act on the door opening detection machine-controlled valve.

[0019] Furthermore, the door opening detection mechanism also includes a sleeve and a mounting plate, the sleeve is sleeved on the door opening detection rod and fixedly connected to the door opening detection rod, the sleeve passes through the mounting plate and is slidably connected to the mounting plate, and the door opening detection machine control valve is installed on the main body through the mounting plate; a reset spring is arranged between the end of the sleeve and the mounting plate; the wedge surface is arranged on the sleeve, and the sleeve is threadedly connected to the door opening detection rod, and an adjusting nut is fixed to the end of the sleeve.

[0020] Furthermore, the hydraulic elevator also has a load detection mechanism arranged on the main body;

[0021] The load detection mechanism comprises a first bushing for carrying the drilling tool and a load detection machine-controlled valve. The first bushing is slidably connected to the inner wall of the main body in the vertical direction. The load detection machine-controlled valve is assembled on the main body. A load detection linkage mechanism is arranged between the first bushing and the load detection machine-controlled valve. The load detection linkage mechanism transmits the downward movement of the first bushing when carrying the drilling tool to the load detection machine-controlled valve. The load detection machine-controlled valve is connected to the control system, and the control system is connected to the switch door driving mechanism.

[0022] Furthermore, the load detection linkage mechanism includes a pressure cover, the top of which directly or indirectly abuts against the first bushing to follow the movement of the first bushing; the pressure cover is sleeved on the load detection machine-controlled valve and is relatively slidably connected to the load detection machine-controlled valve; a pressure plate is arranged inside the pressure cover, and a second elastic member is arranged between the pressure plate and the pressure cover, and the pressure plate squeezes the load detection machine-controlled valve under the action of the second elastic member.

[0023] Furthermore, the load detection linkage mechanism also includes a pressure rod, the pressure cover is fixedly connected to one end of the pressure rod, a guide countersunk hole is provided at the top of the right side of the main body, and a third elastic member is fixedly provided between the other end of the pressure rod and the bottom of the guide countersunk hole; the pressure rod abuts against the first bushing to follow the movement of the first bushing.

[0024] Furthermore, the hydraulic elevator also has a door closing trigger mechanism arranged on the main body;

[0025] The door closing trigger mechanism includes a trigger pin and a trigger machine-controlled valve. The trigger machine-controlled valve is fixedly mounted on the outer wall of the main body. The trigger pin passes through the wall of the main body and is slidably connected to the main body so that one end of the trigger pin can extend into the space inside the main body and retract into the wall of the main body; the other end of the trigger pin can directly or indirectly act on the trigger machine-controlled valve; the trigger machine-controlled valve is connected to the control system, and the control system is connected to the door opening and closing drive mechanism.

[0026] Further, the trigger pin acts on the trigger-controlled valve through the trigger linkage mechanism, and when the trigger pin is retracted into the wall of the main body, the trigger linkage mechanism locks the position of the trigger pin.

[0027] Furthermore, the trigger linkage mechanism includes a trigger cylinder and a push rod connected to the control system, the trigger cylinder has a movable rod, the movable rod has an movable plug that divides the trigger cylinder into a first cylinder body and a second cylinder body, and the moving direction of the movable rod is controlled by the oil inlet state in the first cylinder body or the second cylinder body; one end of the push rod passes through the movable rod to act on the trigger machine control valve, and the other end of the push rod is connected to the trigger pin, and the sliding directions of the push rod, the piston rod and the trigger pin are the same; a fourth elastic member is fixed between the movable rod and the push rod.

[0028] A method for safe operation of a hydraulic elevator, using the hydraulic elevator, the hydraulic elevator having a main body, the main body having a door opening and closing mechanism, a load-protected door opening prevention mechanism, a door closing detection mechanism, a door opening detection mechanism, a load detection mechanism, a door closing trigger mechanism and a control system; comprising the following steps:

[0029] S1: Before the drilling tool enters the main body, the second door body and the first door body of the door opening and closing mechanism perform a door opening action, and the door opening detection mechanism obtains the door opening action and door opening state signal in the door opening and closing mechanism;

[0030] S2: The door opening detection mechanism transmits the door opening action and door opening state signals to the control system, and the control system determines whether the door opening and closing mechanism is in the door opening state; if it is determined that the door opening and closing mechanism is in the door opening state, the subsequent steps are performed; otherwise, the subsequent steps are not performed;

[0031] S3: The drilling tool enters the interior of the main body, and the door closing trigger mechanism is triggered during the entry process. The door closing trigger mechanism obtains the triggered signal and transmits the triggered signal to the control system. The control system controls the second door body and the first door body of the door opening and closing mechanism to perform the door closing action;

[0032] S4: After the door opening and closing mechanism performs the door closing action, the door closing detection mechanism detects and obtains the door closing state signal of the door opening and closing mechanism, and transmits the signal to the control system, and the control system determines whether the door opening and closing mechanism is in a normal door closing state; if it is determined that the door opening and closing mechanism is in a normal door closing state, the subsequent steps are performed; otherwise, the subsequent steps are not performed;

[0033] S5: lifting the drilling tool. During the lifting process, the load detection mechanism and the load-protected door opening prevention mechanism work;

[0034] S6: The load detection mechanism is acted upon by the drilling tool, obtains a drilling tool carrying signal, and transmits the drilling tool carrying signal to the control system, which determines whether the drilling tool is carried normally; if the drilling tool is carried normally, the door opening power of the door opening and closing mechanism is cut off and the drilling tool is lifted normally; otherwise, the drilling tool lifting action is stopped;

[0035] S7: The loaded door-opening prevention mechanism is acted upon by the drilling tool, locking the door-opening mechanism in the closed state.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0037] 1. The present invention can structurally prevent the hydraulic elevator from opening the door when loaded through the load-bearing anti-opening mechanism, thereby ensuring the safety of the hydraulic elevator;

[0038] 2. The present invention can effectively judge whether the hydraulic elevator is closed normally through the door closing detection mechanism. In particular, when the hydraulic elevator is located at a high place and is not convenient for observation, the door closing detection mechanism can timely and accurately feedback the door closing state of the hydraulic elevator, so that the control system can obtain the door closing state of the hydraulic elevator in time and take the next action in time, avoiding manual confirmation of the door closing state, facilitating automation integration and improving operation efficiency;

[0039] 3. The present invention can feed back the real-time working status of the hydraulic elevator to the control system through the load detection mechanism, so that the operator can make timely judgment and carry out the next step of work. At the same time, the door opening power of the door opening mechanism is cut off from the power source of the door opening (the door opening and closing driving mechanism in the door opening and closing mechanism), thereby reducing the possibility of the hydraulic elevator opening the door by mistake and significantly improving the working safety of the hydraulic elevator;

[0040] 4. The present invention can make it unnecessary to manually judge whether the drill pipe has entered the hydraulic elevator during operation through the door closing trigger mechanism, thereby improving the convenience and success rate of the hydraulic elevator operation;

[0041] 5. The present invention can feed back the door opening state of the hydraulic elevator to the control system through the door opening detection mechanism, so that the control system can obtain the door opening state of the hydraulic elevator in time and take the next step in time, thus avoiding manual confirmation of the door opening state, facilitating automation integration and improving operation efficiency;

[0042] 6. The present invention integrates the loaded door opening prevention mechanism, the door closing detection mechanism, the load detection mechanism, the door closing trigger mechanism and the door opening detection mechanism on the main body of the same hydraulic elevator, and they work together to effectively ensure the safety performance of the hydraulic elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0044] Figure 1 It is a front view of the hydraulic elevator of the present invention and a three-dimensional schematic diagram of the door opening and closing mechanism in a door closing state;

[0045] Figure 2 It is a rear view of the hydraulic elevator of the present invention;

[0046] Figure 3 A three-dimensional schematic diagram of the door opening and closing mechanism disclosed in the present invention in an open door state;

[0047] Figure 4 A top cross-sectional view of the door opening and closing mechanism disclosed in the present invention in a door closing state;

[0048] Figure 5 A top cross-sectional view of the door opening and closing mechanism disclosed in the present invention in an open door state;

[0049] Figure 6 It is a structural schematic diagram of an unlatched door latch of the loaded door-opening prevention mechanism disclosed in the present invention;

[0050] Figure 7 It is a structural schematic diagram of a locking door latch of a loaded door-opening prevention mechanism disclosed in the present invention;

[0051] Figure 8 It is a schematic diagram of the structure and assembly of the door closing detection mechanism disclosed in the present invention;

[0052] Fig. 9 for Figure 8 The enlarged schematic diagram of point A in the middle;

[0053] Fig.10 It is a schematic diagram of the structure and assembly of the load detection mechanism disclosed in the present invention;

[0054] Fig.11 for Fig.10 The enlarged schematic diagram of point B in the middle;

[0055] Fig.12 It is a schematic diagram of the structure and assembly of the door closing trigger mechanism disclosed in the present invention;

[0056] Fig.13 It is a schematic diagram of the structure and assembly of the door opening detection mechanism disclosed in the present invention;

[0057] Fig.14 It is a structural schematic diagram of the door opening detection mechanism disclosed in the present invention;

[0058] Fig.15 for Fig.14 The enlarged schematic diagram of the center C;

[0059] Markings in the figure: 1-main body; 11-first bushing; 111-second inclined surface; 112-second hanging part; 12-middle bushing; 13-second bushing; 14-second door body bushing; 2-door opening and closing mechanism; 21-first door body; 22-second door body; 23-door latch body; 231-guide surface; 24-door latch oil cylinder; 25-first oil cylinder; 26-second oil cylinder; 27-latch groove; 3-loaded anti-opening mechanism; 31-lock pin; 32-first elastic member; 33-pull rod; 34-pressing pin; 4-door closing detection mechanism; 41-door closing detection machine control valve; 42-eccentric block; 421-protrusion; 422-roller; 5-first door body bushing; 5 1-first inclined plane; 52-first hanging part; 6-door opening detection mechanism; 61-door opening detection machine control valve; 62-door opening detection rod; 63-wedge surface; 64-sleeve; 65-mounting plate; 66-reset spring; 7-door closing trigger mechanism; 71-trigger pin; 72-fourth elastic member; 73-top rod; 74-movable rod; 741-movable plug; 75-trigger cylinder; 751-first cylinder body; 752-second cylinder body; 76-trigger machine control valve; 8-load detection mechanism; 81-pressure rod; 82-second elastic member; 83-pressure cover; 84-pressure plate; 85-load detection machine control valve; 86-third elastic member; 87-guide countersunk hole. DETAILED DESCRIPTION

[0060] In the description of this specification, it should be noted that if the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used. It is only for the convenience of describing this specification and simplifying the description, and does 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 a limitation on this specification.

[0061] In the description of this specification, it should be noted that the terms "first", "second" and the like are only used to distinguish different components and therefore should not be understood as limiting this specification.

[0062] In addition, if the terms "horizontal" or "vertical" appear in the description of this specification, it does 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.

[0063] In the description of this specification, it should also be noted that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, the connection 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 an indirect connection through an intermediate medium, and it can be a connection between the internal parts of two elements.

[0064] In the description of this specification, the "set threshold value" can be obtained through a limited number of experiments. The specific number is determined according to actual conditions and will not be explained in this specification.

[0065] In the description of this specification, the components with "mechanically controlled valve" in the component names are all mechanically controlled valves known in the art, which will generate signals when acted upon, and the specific structure will not be described in detail.

[0066] Example 1

[0067] like Figure 1-Figure 15 As shown, a hydraulic elevator comprises a main body 1, the overall shape of the main body 1 is similar to a hoop structure, the drilling tool can be hung on the main body 1 after entering the main body 1, and the main body 1 holds the drilling tool tightly; the main body 1 is provided with a door opening and closing mechanism 2, a load-proof door opening prevention mechanism 3, a door opening and closing detection device and a control system; wherein:

[0068] The door opening and closing mechanism 2 comprises a second door body 22 and a first door body 21 which are respectively hinged to the left and right sides of the main body 1, and a door opening and closing driving mechanism; the second door body 22 and the first door body 21 can rotate around the corresponding hinged positions, and the direction of rotation is perpendicular to the axis of the main body 1; the door opening and closing driving mechanism is connected to the control system, and the control system controls the door opening and closing driving mechanism to drive the second door body 22 and the first door body 21 to move closer to each other and close, so as to control the door opening and closing mechanism 2 to close the door; the control system controls the door opening and closing driving mechanism to drive the second door body 22 and the first door body 21 to move away from each other and open, so as to control the door opening and closing mechanism 2 to open the door; after the door opening and closing mechanism 2 completes the door opening action, the main body 1 (equivalent to the door opening and closing mechanism 2) is in the door opening state, and the drilling tool can enter the main body 1 from the side of the main body 1; after the door opening and closing mechanism 2 completes the door closing action, the main body 1 (equivalent to the door opening and closing mechanism 2) is in the door closing state, and the drilling tool in the main body 1 is clamped, and the drilling tool can be lifted after being clamped.

[0069] In this embodiment, the loaded anti-door-opening mechanism 3 is linked with the door-opening mechanism 2, that is, when the main body 1 clamps the drilling tool and lifts the drilling tool, the loaded anti-door-opening mechanism 3 can structurally lock the closed state of the door-opening mechanism 2 to prevent the hydraulic elevator from opening the door when it is loaded, thereby ensuring the safety of the hydraulic elevator.

[0070] In this embodiment, the door opening and closing detection device is used to detect the door opening and closing state of the door opening and closing mechanism 2 in the hydraulic elevator, and feed back the door opening and closing state to the control system; the door opening and closing detection device can effectively judge whether the hydraulic elevator is closed normally, especially when the hydraulic elevator is located at a high place and it is not convenient to observe, the door opening and closing detection device can timely and accurately feed back the door closing state and door opening state of the hydraulic elevator, so that the control system can obtain the door closing state and door opening state of the hydraulic elevator in time, and take the next step in time, avoiding manual confirmation of the door closing and door opening states, which is conducive to automation integration and improves operation efficiency.

[0071] It should be noted that the control system is an electrical system, which can adjust the hydraulic oil in the oil circuit when the hydraulic elevator is working according to the obtained signal, and realize the operation of the control actuator through hydraulic oil or electricity; the components of the control system are known to those skilled in the art and will not be described in detail in this specification.

[0072] Example 2

[0073] like Figure 1-Figure 15 As shown, based on Example 1, a feasible specific implementation method is further proposed.

[0074] In this embodiment, the main body 1 is further provided with a load detection mechanism 8 and a door closing trigger mechanism 7, and the door opening and closing detection device includes a door opening detection mechanism and / or a door closing detection mechanism; wherein:

[0075] In the present embodiment, the door closing detection mechanism 4 is linked with the door opening and closing mechanism 2, that is, when the door opening and closing mechanism 2 performs the door closing action, the door closing detection mechanism 4 obtains the door closing action signal from the door opening and closing mechanism 2, and transmits the obtained signal to the control system, so as to detect whether the door opening and closing mechanism 2 is in the door closing state and feed back the state signal to the control system; the door closing detection mechanism 4 can effectively judge whether the door closing of the hydraulic elevator is normal, especially when the hydraulic elevator is located at a high place and it is not convenient to observe, the door closing detection mechanism can timely and accurately feed back the door closing state of the hydraulic elevator, so that the control system can obtain the door closing state of the hydraulic elevator in time, and take the next step in time, avoiding manual confirmation of the door closing state, facilitating automation integration, and improving operation efficiency.

[0076] In this embodiment, the load detection mechanism 8 is connected to the control system to detect and provide feedback on whether the hydraulic elevator carries drilling tools; the real-time working status of the hydraulic elevator can be fed back to the control system through the load detection mechanism 8, which is convenient for the operator to make timely judgments and carry out the next step of work. At the same time, the door opening power of the door opening mechanism 2 is cut off from the power source of the door opening (the door opening and closing drive mechanism in the door opening and closing mechanism 2), thereby reducing the possibility of the hydraulic elevator opening the door by mistake and significantly improving the working safety of the hydraulic elevator.

[0077] In this embodiment, the door closing trigger mechanism 7 is linked with the door opening and closing mechanism 2. When the drill tool enters the main body 1, the door closing trigger mechanism 7 will be triggered. The door closing trigger mechanism 7 is connected to the control system, and the triggered signal is transmitted to the control system. The control system controls the door opening and closing mechanism 2 to perform the door closing action. The door closing trigger mechanism 7 can make the hydraulic elevator do not need to manually judge whether the drill rod has entered the elevator during operation, thereby improving the convenience of the hydraulic elevator operation and the success rate of the operation.

[0078] In this embodiment, the door opening detection mechanism 6 is linked with the door opening and closing mechanism 2, and a door opening action signal is obtained from the door opening and closing mechanism 2. The door opening detection mechanism 6 is connected to the control system to transmit the door opening action signal to the control system, so as to detect whether the door opening and closing mechanism 2 is in an open state and feed back the state signal to the control system. The door opening state of the hydraulic elevator can be fed back to the control system through the door opening detection mechanism 6. The control system can obtain the door opening state of the hydraulic elevator in time and take the next action in time, thus avoiding manual confirmation of the door opening state, facilitating automation integration, and improving operation efficiency.

[0079] In this embodiment, the loaded door opening prevention mechanism 3, the door closing detection mechanism 4, the load detection mechanism 8, the door closing trigger mechanism 7 and the door opening detection mechanism 6 are integrated on the main body 1 of the same hydraulic elevator, and work together to provide real-time feedback on the working status of the hydraulic elevator, and effectively avoid accidental door opening operation when carrying drilling tools, thereby ensuring the working safety of the hydraulic elevator.

[0080] Example 3

[0081] On the basis of Example 2, a specific implementation method of the "door opening and closing mechanism 2" is further proposed.

[0082] A feasible implementation manner, the door opening and closing mechanism 2 is arranged on the front side of the main body 1, and includes a second door body 22, a first door body 21 and a door opening and closing drive mechanism; the door opening and closing drive mechanism includes a second oil cylinder 26 and a first oil cylinder 25; the two ends of the second oil cylinder 26 are respectively hinged to the second door body 22 and the main body 1, and the hinge avoids interference between the rotation of the second door body 22 and the length change of the second oil cylinder 26; the rotation axis of the hinge between the second oil cylinder 26 and the second door body 22 is not colinear with the rotation axis of the hinge between the second door body 22 and the main body 1, so that the distance between the force application position of the second oil cylinder 26 on the second door body 22 and the hinge position of the second door body 22 and the main body 1 serves as the force arm for the rotation of the second door body 22, The second oil cylinder 26 effectively enables the second door body 22 to rotate around the position where it is hinged with the main body 1; the two ends of the first oil cylinder 25 are respectively hinged to the first door body 21 and the main body 1, and the hinge avoids interference between the rotation of the first door body 21 and the length change of the first oil cylinder 25; the rotation axis of the hinge between the first oil cylinder 25 and the first door body 21 is not colinear with the rotation axis of the hinge between the first door body 21 and the main body 1, so that the distance between the force application position of the first oil cylinder 25 on the first door body 21 and the hinge position of the first door body 21 and the main body 1 serves as the force arm for the rotation of the second door body 22, effectively enabling the first oil cylinder 25 to drive the first door body 21 to rotate around the position where it is hinged with the main body 1.

[0083] A feasible implementation method is that the second cylinder 26 and the first cylinder 25 are both connected to the control system to realize that the actions of the second cylinder 26 and the first cylinder 25 are controlled by the control system, thereby realizing that the control system controls the rotation direction of the second door body 22 and the first door body 21, and further realizes the control of the door opening and closing mechanism 2 to perform door opening and closing actions.

[0084] Example 4

[0085] On the basis of any one of the implementations in Examples 1-3, a specific implementation of the "door opening and closing mechanism 2" is further proposed.

[0086] A feasible implementation manner, the door opening and closing mechanism 2 also includes a latch body 23, one end of the latch body 23 is hinged on the outer side of the second door body 22, and the other end of the latch body 23 can contact the outer surface of the first door body 21 to achieve that the latch body 23 spans the second door body 22 and the first door body 21; or one end of the latch body 23 is hinged on the outer side of the first door body 21, and the other end of the latch body 23 can contact the outer surface of the second door body 22 to achieve that the latch body 23 spans the second door body 22 and the first door body 21; the latch body 23 connects the second door body 22 and the first door body 21 into a whole when they are in the closed state, on the one hand, restricts the rotation of the second door body 22 and the first door body 21 away from each other, and on the other hand, the latch body 23 serves as a reinforcement spanning the second door body 22 and the first door body 21, effectively improving the strength of the second door body 22 and the first door body 21 when they are in the closed state.

[0087] In this embodiment, the latch body 23 is assembled in a hinged manner so that the latch body 23 can be transformed between opening and closing in a rotating manner; when the latch body 23 is closed, the latch body 23 spans the second door body 22 and the first door body 21.

[0088] A feasible implementation manner is that a latch cylinder 24 is hinged between the latch body 23 and the door on which the latch body 23 is installed, and the latch cylinder 24 provides power for the rotation of the latch body 23, that is, the latch cylinder 24 drives the latch body 23 to open or close; the rotation axis of the hinged connection between the latch cylinder 24 and the latch body 23 is not colinear with the rotation axis of the hinged connection between the latch body 23 and the door on which the latch body 23 is installed, so that the distance between the force application position of the latch cylinder 24 on the latch body 23 and the hinged position of the latch body 23 and the second door body 22 or the first door body 21 serves as the lever arm for the rotation of the latch body 23, effectively enabling the latch cylinder 24 to drive the latch body 23 to rotate.

[0089] A feasible implementation method is that a latch groove 27 matching the latch body 23 is opened on the outer side of the other door, and the latch is "L"-shaped, with a long side and a short side that are at a certain angle to each other; wherein the long side (one end of the latch body 23) is hinged to the second door body 22 or the first door body 21, and the short side (the other end of the latch body 23) can enter the latch groove 27; the latch groove 27 further limits the latch body 23 to only rotational freedom, effectively improving the stability of the latch connecting the second door body 22 and the first door body 21 into a whole.

[0090] In a feasible implementation manner, the latch cylinder 24 is connected to a control system so that the movement of the latch cylinder 24 is controlled by the control system, thereby enabling the control system to control the opening and closing of the latch body 23 .

[0091] Example 5

[0092] On the basis of Example 4, a specific implementation method of the "loaded anti-door opening mechanism 3" is further proposed.

[0093] In a feasible implementation manner, the load-carrying anti-door-opening mechanism 3 is arranged on the first door body 21, including a first door body bushing 5 for carrying the drilling tool and a lock pin 31 for locking the door latch body 23, so that the door latch body 23 maintains a state of limiting the rotation of the second door body 22 and the first door body 21 away from each other; the first door body bushing 5 is slidably connected to the first door body 21 in the vertical direction, and a load-carrying linkage mechanism is provided between the first door body bushing 5 and the lock pin 31; when the first door body bushing 5 carries the drilling tool and moves downward, the lock pin 31 locks the door latch body 23 through the load-carrying linkage mechanism; specifically, the first door body bushing 5 is located at The inner side of the first door body 21 is slidably connected to the first door body 21. When the drilling tool enters the interior of the main body 1 and the main body 1 lifts the drilling tool, the drilling tool is hung on the top of the first door body bushing 5. The gravity of the drilling tool itself will act on the top of the first door body bushing 5. The first door body bushing 5 supports the drilling tool and slides downward a short distance along the first door body 21 in the vertical direction. The sliding distance is transmitted to the locking pin 31 through the load-bearing linkage mechanism. The locking pin 31 extends out and abuts against the outer side of the door latch body 23, restricting the rotation of the door latch body 23, thereby achieving the purpose of locking the door latch body 23, and further locking the door switch mechanism 2 to keep the door closed.

[0094] A feasible implementation manner, the load-carrying linkage mechanism includes a lever 33, the middle part of the lever 33 is rotatably connected to the first door body 21, one end of the lever 33 is close to the inner wall of the first door body 21, and the other end of the lever 33 is close to the outside of the first door body 21, that is, the rotation direction of the lever 33 is perpendicular to the first door body 21 and parallel to the vertical direction; a pressing pin 34 is provided between one end of the lever 33 and the first door body bushing 5, and the pressing pin 34 is also slidably connected to the first door body 21 in the vertical direction, such as a hole for installing the pressing pin 34 is provided on the first door body 21, the pressing pin 34 is installed in the hole, and the two ends of the pressing pin 34 extend out of the hole, respectively abutting against one end of the lever 33 and the first door body bushing 5; the other end of the lever 33 abuts against the bottom of the locking pin 31, the locking pin 31 passes through the first door body 21 and is slidably connected to the first door body 21, and a first elastic member 3 is provided between the locking pin 31 and the first door body 21 When the locking pin 31 is pushed out of the first door body 21 and abuts against the outer side of the latch body 23, the locking pin 31 is prevented from rotating.

[0095] It should be noted that the abutment is the contact between the two parts, and they are not fixed to each other, that is, when the lever 33 rotates, there is slippage between the contact position of the lever 33 and the pressing pin 34 and the locking pin 31, which effectively avoids motion interference.

[0096] A feasible implementation manner is that the first inclined surface 51 facing the inside of the main body 1 is provided at the position where the first door body bushing 5 and the first door body 21 are slidably connected. The first inclined surface 51 is provided on both the first door body bushing 5 and the first door body 21, and the two cooperate with each other, that is, the first door body bushing 5 is displaced toward the inside of the main body 1 during the process of moving downward in the vertical direction, so that the first door body bushing 5 can be further pressed against the side of the drilling tool when the main body 1 lifts the drilling tool, thereby increasing the friction between the drilling tool and the main body 1 and further limiting the swing of the drilling tool during the lifting process, effectively improving the stability of the connection between the drilling tool and the main body 1, and further improving the safety of the main body 1 lifting the drilling tool.

[0097] A feasible implementation manner is that the top of the first door body core 5 has a first hanging portion 52, and the first hanging portion 52 is hung on the top of the first door body 21 to enable the first door body 21 to limit the first door body core 5, thereby preventing the first door body core 5 from sliding downward in the vertical direction and causing the first door body core 5 to separate from the first door body 21. The first door body 21 supports the first hanging portion 52 to support the first door body 21, thereby improving the stability of the hoisting drilling tool.

[0098] Example 6

[0099] On the basis of any one of the implementations in Examples 2-4, a specific implementation of the "door closing detection mechanism 4" is further proposed.

[0100] A feasible implementation manner, the door closing detection mechanism 4 is arranged on the first door body 21, including a door closing detection machine-controlled valve 41 that can generate a signal after being pressurized, the door closing detection machine-controlled valve 41 is fixed on the second door body 22 and the door closing detection machine-controlled valve 41 is connected to the control system, and there is a door closing detection linkage mechanism between the door closing detection machine-controlled valve 41 and the door latch body 23; specifically, when the door latch body 23 is in the closed position, it will squeeze the door closing detection machine-controlled valve 41 through the door closing detection linkage mechanism, and the door closing detection machine-controlled valve 41 will generate a signal after being squeezed, and transmit the signal to the control system, the control system obtains the signal, and if the signal value exceeds the set threshold, it determines that the door latch body 23 is in the closed position, that is, the door latch body 23 has been closed, thereby determining that the door opening and closing mechanism 2 is in the closed state; conversely, if the control system does not receive a signal from the door closing detection machine-controlled valve 41 or the signal value is lower than the set threshold, this indicates that the door latch body 23 is not in the closed position.

[0101] A feasible implementation manner, the door closing detection linkage mechanism includes an eccentric block 42, one end of the eccentric block 42 is hinged to the first door body 21, when the door latch body 23 is in a position state restricting the second door body 22 and the first door body 21, the other end of the eccentric block 42 can abut against the door latch body 23, and the door latch body 23 supports the other end of the eccentric block 42; the middle part of the eccentric block 42 has a protrusion 421, and the protrusion 421 acts on the door closing detection machine control valve 41 when the door latch body 23 abuts against the eccentric block 42; specifically, the door latch body 23 is provided with an inclined guide surface on one side close to the latch groove 27 231, the normal vector of the guide surface 231 is upward and toward the latch groove 27. During the closing process, the latch body 23 will contact one end of the eccentric block 42. As the latch body 23 moves to the door closing position, the other end of the eccentric block 42 will move upward along the guide surface 231, so that the latch body 23 supports the other end of the eccentric block 42, thereby allowing the eccentric block 42 to rotate around the position hinged with the first door body 21. The rotation of the eccentric block 42 moves the protrusion 421 upward, so that the protrusion 421 squeezes the door closing detection machine control valve 41 (the protrusion 421 is located at the upper side of the eccentric block 42).

[0102] In a feasible implementation manner, a roller 422 is provided at the position of the eccentric block 42 abutting against the latch body 23, so as to convert the sliding contact between the eccentric block 42 and the guide surface 231 on the latch body 23 into rolling contact, thereby effectively reducing the damage caused by friction.

[0103] Example 7

[0104] In any one of the implementations described in Examples 1-6, a specific implementation of the "load detection mechanism 8" is further proposed.

[0105] In a feasible implementation manner, the load detection mechanism 8 is arranged in the main body 1 and is located on the right side of the main body 1, and includes a first bushing 11 for carrying a drilling tool and a load detection mechanical control valve 85, the first bushing 11 is slidably connected to the inner wall of the main body 1 in the vertical direction; the load detection mechanical control valve 85 is assembled on the outer wall of the main body 1, and a load detection linkage mechanism is arranged between the first bushing 11 and the load detection mechanical control valve 85, and the load detection linkage mechanism transmits the downward movement of the first bushing 11 when carrying the drilling tool to the load detection mechanical control valve 85; the load detection mechanical control valve 85 is connected to the control system; specifically, the first bushing 11 is located on the inner side of the right side of the main body 1, and is slidably connected to the right side wall of the main body 1, and when the drilling tool is inside the main body 1 and the main body 1 lifts the drilling tool, the drilling tool is hung on the first bushing 11 The weight of the drilling tool itself will act on the top of the first bushing 11. While supporting the drilling tool, the first bushing 11 will slide down a short distance along the first door body 21 in the vertical direction. The sliding distance is transmitted to the load detection machine control valve 85 through the load detection linkage mechanism. The load detection machine control valve 85 is squeezed to generate a signal, and the signal is transmitted to the control system. The control system determines whether the main body 1 carries the drilling tool (i.e., carries the drilling tool when lifting the drilling tool) according to the obtained signal value; if the control system obtains the signal and the signal value exceeds the set threshold, it is determined that the main body 1 carries the drilling tool; otherwise, if the control system does not obtain the signal or the signal value does not exceed the set threshold, it is determined that the main body 1 does not carry the drilling tool.

[0106] It should be noted that the control system is connected to the door opening and closing drive mechanism, that is, when the control system determines that the drilling tool is loaded, the power source of the door opening and closing drive mechanism is cut off, that is, the hydraulic oil supply of the second cylinder 26 and the first cylinder 25 is cut off, so that the second cylinder 26 and the first cylinder 25 maintain pressure, effectively preventing the erroneous door opening command from being transmitted to the second cylinder 26 and the first cylinder 25, and further preventing the occurrence of load-bearing door opening.

[0107] In a feasible implementation manner, the load detection linkage mechanism includes a gland 83, the top of which directly or indirectly abuts against the first bushing 11 to follow the movement of the first bushing 11; the gland 83 is sleeved on the load detection machine-controlled valve 85 and is relatively slidably connected with the load detection machine-controlled valve 85; a pressing plate 84 is arranged inside the gland 83, and a second elastic member 82 is arranged between the pressing plate 84 and the gland 83, and the pressing plate 84 squeezes the load detection machine-controlled valve 85 under the action of the second elastic member 82; specifically, when the first bushing 11 slides downward under the action of the gravity of the drilling tool, the gland 83 will be pushed to move downward, and the pressure on the gland 83 is transmitted to the gland 84 through the second elastic member 82. At this time, the second elastic member 82 has elastic potential energy, that is, the second elastic member 82 is preferably a compression spring, which has elastic potential energy when compressed, and the elastic potential energy will act on the gland 84, and the gland 84 squeezes the load detection machine-controlled valve 85, and the load detection machine-controlled valve 85 is squeezed to generate a signal, and the signal is transmitted to the control system.

[0108] In a feasible implementation manner, the load detection linkage mechanism further comprises a pressure rod 81, the pressure cover 83 is fixedly connected to one end of the pressure rod 81, a guide countersunk hole 87 is provided at the top of the right side of the main body 1, and a third elastic member 86 is fixedly provided between the other end of the pressure rod 81 and the bottom of the guide countersunk hole 87; the pressure rod 81 abuts against the first bushing 11 to move with the first bushing 11; specifically, the third elastic member 86 is guided by the guide countersunk hole 87 and supports the pressure rod 81 together with the second elastic member 82, that is, when the pressure rod 8 When pushed by the first bushing 11, the third elastic member 86 has elastic potential energy, that is, the second elastic member 82 is preferably a compression spring, which has elastic potential energy when compressed. The elastic potential energy of the third elastic member 86 and the elastic potential energy of the second elastic member 82 jointly support the compression rod 81, so that the third elastic member 86 shares the gravity of the drilling tool with the second elastic member 82, effectively preventing the gravity of the drilling tool from being fully transmitted to the load detection machine control valve 85, thereby preventing the load detection machine control valve 85 from being damaged, and ensuring the normal use and service life of the load detection machine control valve 85.

[0109] A feasible implementation manner is that the second inclined surface 111 facing inwards of the main body 1 is provided at the position of the sliding connection between the first bushing 11 and the right side of the main body 1. The second inclined surface 111 is provided on both the first bushing 11 and the main body 1, and the two cooperate with each other. The principle and function of this feature are the same as the principle and function of the cooperation feature between the first door body bushing 5 and the first door body 21, and no further explanation will be given here.

[0110] A feasible implementation manner is that the top of the first core plug 11 has a second hanging portion 112, and the second hanging portion 112 is hung on the top of the right side of the main body 1 to enable the main body 1 to limit the first core plug 11. The principle and function of this feature are the same as the principle and function of the matching feature between the first door body core plug 5 and the first door body 21, and no further explanation will be given here.

[0111] Example 8

[0112] In any one of the implementations described in Examples 1-7, a specific implementation of the "door closing trigger mechanism 7" is further proposed.

[0113] In a feasible implementation manner, the door closing trigger mechanism 7 is arranged at the rear side of the main body 1, and includes a trigger pin 71 and a trigger machine-controlled valve 76. The trigger machine-controlled valve 76 is fixedly assembled on the outer wall of the main body 1, and the trigger pin 71 passes through the wall of the main body 1 and is slidably connected to the main body 1, so that one end of the trigger pin 71 can extend into the space inside the main body 1 and retract into the wall of the main body 1; the other end of the trigger pin 71 can directly or indirectly act on the trigger machine-controlled valve 76; the trigger machine-controlled valve 76 is connected to the control system, and the control system is connected to the door opening and closing drive mechanism; specifically, when the drilling tool does not enter the main body 1, the trigger pin 71 extends into the space inside the main body 1; when the drilling tool enters the main body 1, the drilling tool hits the trigger pin 71 pushes the trigger pin 71 to retract into the wall of the main body 1. During the retraction process of the trigger pin 71, the other end of the trigger pin 71 gradually squeezes the trigger machine-controlled valve 76, so that the trigger machine-controlled valve 76 is pressurized to generate a signal, and the signal is transmitted to the control system. The control system obtains the signal. If it is determined that the drilling tool has entered the main body 1, the control system controls the door opening and closing drive mechanism to operate, and the door opening and closing mechanism 2 performs the door closing action; more specifically, if the control system obtains the signal and the signal value of the signal exceeds the set threshold value, it is determined that the drilling tool has entered the main body 1; if the control system does not obtain the signal or the obtained signal value does not exceed the set threshold value, it is determined that the drilling tool has not entered the main body 1 or the drilling tool is not in place.

[0114] In a feasible implementation manner, the trigger pin 71 acts on the trigger machine-controlled valve 76 through a trigger linkage mechanism, and when the trigger pin 71 is retracted into the wall of the main body 1, the trigger linkage mechanism locks the position of the trigger pin 71; the trigger linkage mechanism locks the trigger pin 71 in the wall of the main body 1, effectively avoiding friction between the trigger pin 71 and the drilling tool, thereby avoiding wear between the two.

[0115] In a feasible implementation manner, the trigger linkage mechanism includes a trigger cylinder 75 and a push rod 73 connected to a control system. The trigger cylinder 75 has a movable rod 74. The movable rod 74 has an movable plug 741 that divides the trigger cylinder 75 into a first cylinder body 751 and a second cylinder body 752. The moving direction of the movable rod 74 is controlled by the oil inlet state in the first cylinder body 751 or the second cylinder body 752. That is, when the first cylinder body 751 is filled with oil and the second cylinder body 752 is discharged from the oil, the piston rod moves toward the compression of the second cylinder body 752; when the first cylinder body 751 is discharged from the oil and the second cylinder body 752 is filled with oil, the piston rod moves toward the compression of the first cylinder body 751. 751 movement; one end of the push rod 73 passes through the movable rod 74 to act on the trigger machine-controlled valve 76, and the other end of the push rod 73 is connected to the trigger pin 71. The sliding directions of the push rod 73, the piston rod and the trigger pin 71 are the same, that is, when the trigger pin 71 is retracted into the wall of the main body 1, it will act on the trigger machine-controlled valve 76 through the push rod 73; when the trigger pin 71 extends into the space inside the main body 1, it is pushed out by the push rod 73; a fourth elastic member 72 is fixed between the movable rod 74 and the push rod 73, and the fourth elastic member 72 is preferably a compression spring, which is compressed to have elastic potential energy; specifically, the whole process of the door closing trigger mechanism 7 is as follows.

[0116] The second cylinder 752 is closer to the inside of the main body 1 than the first cylinder 751 as an example for explanation; the control system controls the first cylinder 751 to flow oil, the second cylinder 752 to discharge oil, the movable plug 741 moves in the direction of compressing the second cylinder 752, thereby carrying the movable rod 74 to move in the direction close to the space inside the main body 1, the movable rod 74 pushes the fourth elastic member 72, the fourth elastic member 72 pushes the trigger pin 71 to extend into the space inside the main body 1, at this time, the fourth elastic member 72 does not have elastic potential energy, the trigger pin 71 waits for the drill to enter the main body 1 to be triggered, and the push rod 73 moves with the trigger pin 71; when the drill enters the main body 1, the drill hits the trigger pin 71 and pushes the trigger pin 71 into the wall of the main body 1, the trigger pin 71 pushes the push rod 73, and the push rod 73 and the movable rod 74 push the fourth elastic member 72 to push the trigger pin 71 into the space inside the main body 1. The rod 74 slides relatively, that is, the push rod 73 moves in the direction of the position of the trigger machine-controlled valve 76, and the push rod 73 acts on the trigger machine-controlled valve 76. The control system determines that the drilling tool enters the main body 1 and controls the door opening and closing mechanism 2 to close the door. At this time, the movable rod 74 will not move due to the limitation of the hydraulic oil, and the fourth elastic member 72 is compressed and has elastic potential energy; then, the control system controls the first cylinder body 751 to discharge oil and the second cylinder body 752 to fill oil, and the movable plug 741 moves in the direction of compressing the first cylinder body 751, and the deformation of the fourth elastic member 72 gradually recovers, the elastic potential energy is released, and the trigger pin 71 is pulled to enter the wall of the main body 1 again or / and the trigger pin 71 is pulled so that the trigger pin 71 remains in the wall of the main body 1, that is, the trigger linkage mechanism is triggered to lock the trigger pin 71 in the wall of the main body 1.

[0117] It should be noted that the main body 1 may further include a middle bushing 12, which is assembled on the inner side of the rear side of the main body 1 to fill the gap between the main body 1 and the drilling tool; in fact, the wall of the main body 1 described in this embodiment includes the middle bushing 12, that is, the trigger pin 71 is located in the wall of the middle bushing 12, and can extend from the middle bushing 12 into the space inside the main body 1, and retract into the wall of the middle bushing 12.

[0118] In a feasible implementation manner, correspondingly, a second bushing 13 is mounted on the inner wall of the left side of the main body 1, and a second door body bushing 14 is also mounted on the inner side of the second door body 22, so as to achieve the function of filling the gap between the main body 1 and the drilling tool.

[0119] Example 9

[0120] On the basis of any one of the implementations in Examples 1-8, an implementation of the “door opening detection mechanism 6” is further proposed.

[0121] In a feasible implementation manner, the door opening detection mechanism 6 is arranged on the left side of the main body 1, including a door opening detection rod 62 and a door opening detection machine-controlled valve 61. The door opening detection rod 62 passes through the wall of the main body 1 and is slidably connected to the main body 1, and after the door opening detection rod 62 passes through the wall of the main body 1, one end of the door opening detection rod 62 is located at the hinged position between the second door body 22 and the main body 1, so that the second door body 22 will move closer to the door opening detection rod 62 during the opening process, and will move away from the door opening detection rod 62 during the closing process; the other end of the door opening detection rod 62 acts on the door opening detection machine-controlled valve 61 through the door opening detection linkage mechanism, and the door opening detection machine-controlled valve 61 is installed on the main body 1 and is connected to the control system; specifically, when the second door body 22 of the door opening and closing mechanism 2 performs the door opening action, the second door body 22 will push one end of the door opening detection rod 62, and the door opening detection rod 62 moves, so that the other end of the door opening detection rod 62 acts on the door opening detection machine-controlled valve 61 through the door opening detection linkage mechanism. The door opening detection machine-controlled valve 61 is pressurized to generate a signal, and transmits the signal to the control system. The control system obtains the signal and determines whether the door opening and closing mechanism 2 is in the door opening state according to the signal; more specifically, if the control system obtains a signal from the door opening detection machine-controlled valve 61 and the signal value of the signal exceeds the set threshold value, the control system determines that the door opening and closing mechanism 2 is already in the door opening state; if the control system does not obtain a signal from the door opening detection machine-controlled valve 61 or the signal value of the signal does not exceed the set threshold value, the control system determines that the door opening and closing mechanism 2 is not in a fully open state.

[0122] A feasible implementation manner is that the door opening detection linkage mechanism is a wedge-shaped surface 63 set on the door opening detection rod 62. When the door opening detection rod 62 is pushed by the second door body 22, the wedge-shaped surface 63 will enter the spatial position of the door opening detection machine-controlled valve 61 to act on the door opening detection machine-controlled valve 61; the second door body 22 opens the door and pushes the door opening detection rod 62. During the movement of the door opening detection rod 62, the wedge-shaped surface 63 will be moved with it. The wedge-shaped surface 63 gradually squeezes the door opening detection machine-controlled valve 61, so that the door opening detection machine-controlled valve generates a signal.

[0123] In a feasible implementation manner, the door opening detection mechanism 6 also includes a sleeve 64 and a mounting plate 65. The sleeve 64 is sleeved on the door opening detection rod 62 and is fixedly connected to the door opening detection rod 62. The sleeve 64 passes through the mounting plate 65 and is slidably connected to the mounting plate 65. The door opening detection machine control valve 61 is installed on the main body 1 through the mounting plate 65; a return spring 66 is arranged between the end of the sleeve 64 and the mounting plate 65. When the door opening detection rod 62 is pushed and moved by the second door body 22, the door opening detection rod 62 will move with the sleeve 64, and the mounting plate 65 is in a fixed position. state, that is, there is a relative movement between the sleeve 64 and the mounting plate 65, so that the reset spring 66 between the sleeve 64 and the mounting plate 65 is deformed and has elastic potential energy, providing energy reserve for resetting the door opening detection rod 62; preferably, the reset spring 66 is a compression spring, which is compressed and has elastic potential energy; when the door opening detection rod 62 is not affected by the second door body 22, that is, the second door body 22 makes a door closing action, the elastic potential energy in the reset spring 66 is released, pushing the sleeve 64, and the sleeve 64 resets the door opening detection rod 62, thereby preparing for the next door opening detection.

[0124] A feasible implementation method, as described above, is that the movement of the sleeve 64 is synchronized with the movement of the door opening detection rod 62, so the wedge surface 63 can be set on the sleeve 64, and the sleeve 64 is threadedly connected to the door opening detection rod 62; this feature can adjust the position of the threaded connection between the sleeve 64 and the door opening detection rod 62, thereby adjusting the position of the wedge surface 63, and further adjusting the strength of the wedge surface 63 acting on the door opening detection machine-controlled valve 61, that is, adjusting the signal strength that the door opening detection machine-controlled valve 61 can generate to match the actual application situation.

[0125] In a feasible implementation manner, an adjusting nut is fixed to the end of the sleeve 64 to facilitate the adjustment of the threaded connection position between the sleeve 64 and the door opening detection rod 62 .

[0126] Example 10

[0127] A method for safely operating a hydraulic elevator, using the hydraulic elevator described in any one of the embodiments 1-9, comprises the following steps:

[0128] S1: Before the main body 1 lifts the drilling tool, the second door body 22 and the first door body 21 of the door opening and closing mechanism 2 perform a door opening action, and the door opening detection mechanism 6 obtains the door opening action and door opening state signal in the door opening and closing mechanism 2;

[0129] S2: The door opening detection mechanism 6 transmits the door opening action and door opening state signals to the control system, and the control system determines whether the door opening and closing mechanism 2 is in the door opening state; if it is determined that the door opening and closing mechanism 2 is in the door opening state, the subsequent steps are performed; otherwise, the subsequent steps are not performed;

[0130] S3: The drilling tool enters the interior of the main body 1, and the door closing trigger mechanism 7 is triggered during the entry process. The door closing trigger mechanism 7 obtains the triggered signal and transmits the triggered signal to the control system, and the control system controls the second door body 22 and the first door body 21 of the door opening and closing mechanism 2 to close the door;

[0131] S4: After the door opening and closing mechanism 2 performs the door closing action, the door closing detection mechanism 4 detects and obtains the door closing state signal of the door opening and closing mechanism 2, and transmits the signal to the control system, and the control system determines whether the door opening and closing mechanism 2 is in a normal door closing state; if it is determined that the door opening and closing mechanism 2 is in a normal door closing state, the subsequent steps are performed; otherwise, the subsequent steps are not performed;

[0132] S5: lifting the drilling tool, during which the load detection mechanism 8 and the load-carrying door-opening prevention mechanism 3 work;

[0133] S6: The load detection mechanism 8 is acted upon by the drilling tool, obtains a drilling tool carrying signal, and transmits the drilling tool carrying signal to the control system, which determines whether the drilling tool is carried normally; if the drilling tool is carried normally, the door opening power of the door opening and closing mechanism 2 is cut off and the drilling tool is lifted normally; otherwise, the drilling tool lifting action is stopped;

[0134] S7: The loaded door-opening prevention mechanism 3 is acted upon by the drilling tool, and the door-opening and closing mechanism 2 is locked in the closed state.

[0135] In a feasible implementation manner, the door opening action of the door opening and closing mechanism 2 includes the following steps:

[0136] A1: The control system controls the latch oil cylinder 24 to move, and the latch oil cylinder 24 pulls the latch body 23 to rotate, and one end of the latch body 23 is separated from the latch groove 27 to realize the opening of the latch body 23;

[0137] A2: The control system controls the second oil cylinder 26 and the first oil cylinder 25 to operate separately. The second oil cylinder 26 pulls the second door body 22 to rotate, and the first oil cylinder 25 pulls the first door body 21 to rotate, and the second door body 22 and the first door body 21 move away from each other until the second door body 22 and the first door body 21 rotate to the extreme position, completing the door opening action of the door opening and closing mechanism 2.

[0138] In a feasible implementation manner, the door closing action of the door opening and closing mechanism 2 includes the following steps:

[0139] B1: The control system controls the second oil cylinder 26 and the first oil cylinder 25 to act respectively, the second oil cylinder 26 pulls the second door body 22 to rotate, the first oil cylinder 25 pulls the first door body 21 to rotate, and the second door body 22 and the first door body 21 approach each other until the second door body 22 and the first door body 21 rotate to the limit position;

[0140] B2: The control system controls the latch oil cylinder 24 to move, and the latch oil cylinder 24 pulls the latch body 23 to rotate. One end of the latch body 23 enters the latch groove 27 to close the latch body 23, completing the closing action of the door opening and closing mechanism 2.

[0141] In a feasible implementation manner, when the door opening and closing mechanism 2 is in the door closing state, the door opening prevention action of the loaded door opening prevention mechanism 3 includes the following steps:

[0142] C1: The first door body bushing 5 slides downward under the action of the drilling tool, and the pressing pin 34 slides downward to act on one end of the lever 33, and the lever 33 rotates to make the other end of the lever 33 move upward;

[0143] C2: The other end of the lever 33 lifts the lock pin 31, and the lock pin 31 extends to limit the rotation of the door latch body 23, so that the lock pin 31 locks the door latch body 23, and the door opening and closing mechanism 2 is locked in the closed state.

[0144] A feasible implementation method is that the elastic potential energy of the first elastic body is overcome during the process of the locking pin 31 being lifted up, so that the first elastic body has elastic potential energy; after the drilling tool is removed, the elastic potential energy of the first elastic body is released, the locking pin 31 is reset, the latch body 23 is unlocked, and the closed state of the door opening and closing mechanism 2 is unlocked.

[0145] In a feasible implementation manner, the door closing detection mechanism 4 detects whether the door closing state of the door opening and closing mechanism 2 is normal, including the following steps:

[0146] D1: During the closing process of the latch body 23, the latch body 23 pushes the roller 422, and the roller 422 rotates with the eccentric block 42;

[0147] D2: The eccentric block 42 rotates so that the protrusion 421 acts on the door closing detection machine control valve 41, and the door closing detection machine control valve 41 is pressurized to generate a pressure signal, and the pressure signal is transmitted to the control system;

[0148] D3: When the control system obtains a signal and the signal value exceeds the set threshold, it is determined that the door closing state of the door opening and closing mechanism 2 is normal;

[0149] D4: Contrary to steps D1-D3, if the control system does not obtain a signal or the signal value does not exceed the set threshold, it is determined that the door closing state of the door opening and closing mechanism 2 is abnormal.

[0150] In a feasible implementation manner, the load detection mechanism 8 detects whether the main body 1 carries a drilling tool, including the following steps:

[0151] E1: The first bushing 11 slides downward under the action of the drilling tool, and moves the pressure rod 81 downward. The pressure rod 81 moves the pressure cover 83 downward. The pressure cover 83 moves downward to overcome the elastic potential energy of the second elastic member 82 between the pressure cover 83 and the pressure plate 84. The pressure cover 83 and the pressure plate 84 are both subjected to the elastic force of the second elastic member 82.

[0152] E2: The pressure plate 84 transmits the elastic force of the second elastic member 82 to the load detection mechanical control valve 85. The load detection mechanical control valve 85 is pressurized to generate a signal and transmit the signal to the control system;

[0153] E3: When the control system obtains a signal and the signal value exceeds a set threshold, it is determined that the main body 1 carries a drilling tool, and the door opening and closing power of the door opening and closing mechanism 2 is cut off;

[0154] E4: Contrary to steps E1-E3, if the control system does not obtain a signal or the signal value does not exceed a set threshold, it is determined that the main body 1 does not carry a drilling tool.

[0155] In a feasible implementation manner, the door closing trigger mechanism 7 triggers the door opening and closing mechanism 2 to perform the door closing action, including the following steps:

[0156] F1: The drilling tool enters the body 1 and hits the trigger pin 71, so that one end of the trigger pin 71 is retracted into the wall of the body 1, and the other end of the trigger pin 71 acts on the trigger machine control valve 76, which receives a signal and transmits it to the control system;

[0157] F2: The control system obtains the signal to control the door opening and closing mechanism 2 to close the door.

[0158] In a feasible implementation, before step F1, the following steps need to be performed:

[0159] F0: Hydraulic oil is supplied to the first cylinder body 751 of the trigger cylinder 75, and the movable rod 74 moves toward the direction close to the interior of the main body 1. At the same time, the fourth elastic member 72 pushes the push rod 73 toward the direction close to the interior of the main body 1; the push rod 73 pushes the trigger pin 71 toward the direction close to the interior of the main body 1; one end of the trigger pin 71 extends out of the wall of the main body 1 and enters the interior of the main body 1, preparing for the drilling tool to enter the main body 1 and hit the trigger pin 71.

[0160] A feasible implementation manner, in step F1, further includes steps F11-F12;

[0161] F11: The trigger pin 71 is retracted into the wall of the main body 1, pushing the push rod 73 to move in the direction of acting on the trigger machine control valve 76, while overcoming the elastic potential energy of the fourth elastic member 72, which has elastic potential energy;

[0162] F12: Hydraulic oil is supplied to the second cylinder body 752 of the trigger cylinder 75, and the hydraulic oil in the first cylinder body 751 is released. The movable rod 74 moves away from the interior of the main body 1 or moves in the direction acting on the trigger machine control valve 76. The fourth elastic member 72 restores its deformation to release elastic potential energy, and the trigger pin 71 is kept in the wall of the main body 1 by pulling the push rod 73.

[0163] In a feasible implementation manner, the door opening detection mechanism 6 detects whether the door opening and closing mechanism 2 is in the door opening state, including the following steps:

[0164] G1: The second door body 22 makes a door opening action, and the second door body 22 pushes the door opening detection rod 62 to move in the direction of acting on the door opening detection control valve. The wedge surface 63 on the door opening detection rod 62 gradually acts on the door opening detection control valve. The door opening detection control valve is pressurized to generate a signal, and the signal is transmitted to the control system;

[0165] G2: The control system obtains a signal and the signal value exceeds the set threshold value to determine that the door opening and closing mechanism 2 is in the open state;

[0166] G3: Contrary to steps G1-G2, if the control system does not obtain a signal or the signal value does not exceed the set threshold, it is determined that the door opening and closing mechanism 2 is in a non-opening state.

[0167] In a feasible implementation manner, in step G1, the following steps G11-G are also included;

[0168] G11: The door opening detection rod 62 moves with the sleeve 64 and overcomes the elastic potential energy of the return spring 66. At the same time, the wedge surface 63 on the sleeve 64 gradually acts on the door opening detection control valve, and the door opening detection control valve is pressurized to generate a signal;

[0169] G12: If the second door body 22 is closed, the elastic potential energy of the reset spring 66 is gradually released, driving the door opening detection rod 62 to reset, preparing for the next door opening state detection of the second door body 22.

[0170] A feasible implementation method is to adjust the connection position between the sleeve 64 and the door opening detection rod 62 to adjust the pressure applied to the door opening detection control valve and adjust the signal strength generated by the door opening detection control valve.

[0171] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A hydraulic elevator, characterized in that: The invention comprises a main body (1), on which a door opening and closing mechanism (2), a loaded door opening prevention mechanism (3), a door opening and closing detection device and a control system are arranged; wherein: The door opening and closing mechanism (2) comprises a door opening and closing driving mechanism, a second door body (22) hinged to one side of the main body (1), and a first door body (21) hinged to the other side of the main body (1); the door opening and closing driving mechanism can drive the second door body (22) and the first door body (21) to move closer to each other to achieve door closing, or / and the second door body (22) and the first door body (21) to move away from each other to achieve door opening; The loaded anti-door-opening mechanism (3) is linked with the door-opening mechanism (2) and is used to lock the door-opening mechanism (2) in a closed state when the hydraulic elevator is under load; The door opening and closing detection device is used to detect the door opening and closing status of the hydraulic elevator and feed back the door opening and closing status to the control system.

2. The hydraulic elevator according to claim 1, characterized in that: The door opening and closing mechanism (2) further comprises a bolt body (23), one end of the bolt body (23) being hinged on the second door body (22), and the other end of the bolt body (23) being capable of contacting the first door body (21) so that the bolt body (23) spans the second door body (22) and the first door body (21); The load-carrying anti-door-opening mechanism (3) is arranged on the first door body (21), and comprises a first door body bushing (5) for bearing the drilling tool, a lock pin (31) for locking the door latch body (23), and a load-carrying linkage mechanism; the first door body bushing (5) is slidably connected to the first door body (21) in the vertical direction, and the load-carrying linkage mechanism is arranged between the first door body bushing (5) and the lock pin (31); when the first door body bushing (5) carries the drilling tool and moves downward, the lock pin (31) locks the door latch body (23) through the load-carrying linkage mechanism.

3. The hydraulic elevator according to claim 2, characterized in that: The load-carrying linkage mechanism comprises a lever (33), the lever (33) is rotatably connected to the first door body (21), a pressing pin (34) is arranged between one end of the lever (33) and the first door body bushing (5), and two ends of the pressing pin (34) respectively abut against the first door body bushing (5) and the lever (33); the other end of the lever (33) abuts against the bottom of the locking pin (31), the locking pin (31) passes through the first door body (21) and is slidably connected to the first door body (21), a first elastic member (32) is arranged between the locking pin (31) and the first door body (21), and when the locking pin (31) passes through the first door body (21) to lock the door latch body (23), the first elastic member (32) is in a state of having elastic potential energy.

4. The hydraulic elevator according to claim 2, characterized in that: The door opening and closing detection device comprises a door closing detection mechanism (4) arranged on a first door body (21); The door closing detection mechanism (4) comprises a door closing detection linkage mechanism and a door closing detection machine-controlled valve (41) capable of generating a signal after being pressurized. The door closing detection machine-controlled valve (41) is used to be connected to a control system, and the door latch body can act on the door closing detection machine-controlled valve (41) through the door closing detection linkage mechanism.

5. The hydraulic elevator according to claim 4, characterized in that: The door closing detection linkage mechanism comprises an eccentric block (42), one end of the eccentric block (42) is hinged to the first door body (21), and when the door latch body (23) is in a position state restricting the second door body (22) and the first door body (21), the other end of the eccentric block (42) abuts against the door latch body (23), and the door latch body (23) supports the other end of the eccentric block (42); The middle part of the eccentric block (42) is provided with a protrusion (421), and when the door latch body (23) and the eccentric block (42) are in contact with each other, the protrusion (421) acts on the door closing detection machine control valve (41).

6. The hydraulic elevator according to any one of claims 1 to 5, characterized in that: The door opening and closing detection device further comprises a door opening detection mechanism (6) arranged on the main body (1); The door opening detection mechanism (6) comprises a door opening detection rod (62) and a door opening detection machine-controlled valve (61); the door opening detection rod (62) passes through the wall of the main body (1) and is slidably connected to the main body (1); and after the door opening detection rod (62) passes through the wall of the main body (1), one end of the door opening detection rod (62) is located at a hinged position between the second door body (22) and the main body (1), so that the second door body (22) will move closer to the door opening detection rod (62) during the opening process, and will move away from the door opening detection rod (62) during the closing process; the other end of the door opening detection rod (62) acts on the door opening detection machine-controlled valve (61) through the door opening detection linkage mechanism; the door opening detection machine-controlled valve (61) is installed on the main body (1) and is connected to the control system.

7. The hydraulic elevator according to claim 6, characterized in that: The door opening detection linkage mechanism is a wedge-shaped surface (63) arranged on the door opening detection rod (62). When the door opening detection rod (62) is pushed by the second door body (22), the wedge-shaped surface (63) enters the space where the door opening detection machine control valve (61) is located to act on the door opening detection machine control valve (61).

8. The hydraulic elevator according to claim 7, characterized in that: The door opening detection mechanism (6) further comprises a sleeve (64) and a mounting plate (65); the sleeve (64) is sleeved on the door opening detection rod (62) and fixedly connected to the door opening detection rod (62); the sleeve (64) passes through the mounting plate (65) and is slidably connected to the mounting plate (65); the door opening detection machine control valve (61) is mounted on the main body (1) through the mounting plate (65); a return spring (66) is arranged between the end of the sleeve (64) and the mounting plate (65); the wedge surface (63) is arranged on the sleeve (64), and the sleeve (64) is threadedly connected to the door opening detection rod (62); an adjusting nut is fixed to the end of the sleeve (64).

9. The hydraulic elevator according to any one of claims 1 to 5, characterized in that: The hydraulic elevator also has a load detection mechanism (8) arranged on the main body (1); The load detection mechanism (8) comprises a first bushing (11) for carrying a drilling tool and a load detection machine-controlled valve (85), wherein the first bushing (11) is slidably connected to the inner wall of the main body (1) in the vertical direction; the load detection machine-controlled valve (85) is assembled on the main body (1), and a load detection linkage mechanism is provided between the first bushing (11) and the load detection machine-controlled valve (85), wherein the load detection linkage mechanism transmits the downward movement of the first bushing (11) when carrying the drilling tool to the load detection machine-controlled valve (85); the load detection machine-controlled valve (85) is connected to a control system, and the control system is connected to a switch door driving mechanism.

10. The hydraulic elevator according to claim 9, characterized in that: The load detection linkage mechanism comprises a pressure cover (83), the top of which directly or indirectly abuts against the first bushing (11) to follow the movement of the first bushing (11); the pressure cover (83) is sleeved on the load detection machine-controlled valve (85) and is slidably connected to the load detection machine-controlled valve (85); a pressure plate (84) is arranged inside the pressure cover (83), a second elastic member (82) is arranged between the pressure plate (84) and the pressure cover (83), and the pressure plate (84) presses the load detection machine-controlled valve (85) under the action of the second elastic member (82).

11. The hydraulic elevator according to claim 10, characterized in that: The load detection linkage mechanism also includes a pressure rod (81), the pressure cover (83) is fixedly connected to one end of the pressure rod (81), a guide countersunk hole (87) is provided at the top of the right side of the main body (1), and a third elastic member (86) is fixedly provided between the other end of the pressure rod (81) and the bottom of the guide countersunk hole (87); the pressure rod (81) abuts against the first bushing (11) to follow the movement of the first bushing (11).

12. The hydraulic elevator according to any one of claims 1 to 5, characterized in that: The hydraulic elevator also has a door closing trigger mechanism (7) arranged on the main body; The door closing trigger mechanism (7) comprises a trigger pin (71) and a trigger machine-controlled valve (76); the trigger machine-controlled valve (76) is fixedly mounted on the outer wall of the main body (1); the trigger pin (71) passes through the wall of the main body (1) and is slidably connected to the main body (1), so that one end of the trigger pin (71) can extend into the space inside the main body (1) and retract into the wall of the main body (1); the other end of the trigger pin (71) can directly or indirectly act on the trigger machine-controlled valve (76); the trigger machine-controlled valve (76) is connected to a control system, and the control system is connected to the door opening and closing drive mechanism.

13. The hydraulic elevator according to claim 12, characterized in that: The trigger pin (71) acts on the trigger machine-controlled valve (76) through a trigger linkage mechanism, and when the trigger pin (71) is retracted into the wall of the main body (1), the trigger linkage mechanism locks the position of the trigger pin (71).

14. The hydraulic elevator according to claim 13, characterized in that: The trigger linkage mechanism comprises a trigger oil cylinder (75) and a push rod (73) connected to a control system. The trigger oil cylinder (75) has a movable rod (74). The movable rod (74) has a movable plug (741) for dividing the trigger oil cylinder (75) into a first cylinder body (751) and a second cylinder body (752). The moving direction of the movable rod (74) is controlled by the oil inlet state in the first cylinder body (751) or the second cylinder body (752). One end of the push rod (73) passes through the movable rod (74) to act on the trigger machine control valve (76). The other end of the push rod (73) is connected to the trigger pin (71). The push rod (73), the piston rod and the trigger pin (71) have the same sliding direction. A fourth elastic member (72) is fixed between the movable rod (74) and the push rod (73).

15. A method for safe operation of a hydraulic elevator, characterized in that: The hydraulic elevator according to any one of claims 1 to 14 comprises a main body (1), the main body (1) comprises a door opening and closing mechanism (2), a loaded door opening prevention mechanism (3), a door closing detection mechanism (4), a door opening detection mechanism (6), a load detection mechanism (8), a door closing trigger mechanism (7) and a control system; and comprises the following steps: S1: before the drilling tool enters the main body (1), the second door body (22) and the first door body (21) of the door opening and closing mechanism (2) perform a door opening action, and the door opening detection mechanism (6) obtains the door opening action and door opening state signal in the door opening and closing mechanism (2); S2: The door opening detection mechanism (6) transmits the door opening action and door opening state signals to the control system, and the control system determines whether the door opening and closing mechanism (2) is in the door opening state; if it is determined that the door opening and closing mechanism (2) is in the door opening state, the subsequent steps are performed; otherwise, the subsequent steps are not performed; S3: the drilling tool enters the interior of the main body (1), and triggers the door closing trigger mechanism (7) during the entry process. The door closing trigger mechanism (7) obtains a triggered signal and transmits the triggered signal to the control system, and the control system controls the second door body (22) and the first door body (21) of the door opening and closing mechanism (2) to perform a door closing action; S4: After the door opening and closing mechanism (2) performs the door closing action, the door closing detection mechanism (4) detects and obtains the door closing state signal of the door opening and closing mechanism (2), and transmits the signal to the control system, and the control system determines whether the door opening and closing mechanism (2) is in a normal door closing state; if it is determined that the door opening and closing mechanism (2) is in a normal door closing state, the subsequent steps are performed; otherwise, the subsequent steps are not performed; S5: lifting the drilling tool, during which the load detection mechanism (8) and the load-carrying door-opening prevention mechanism (3) work; S6: The load detection mechanism (8) is acted upon by the drilling tool, obtains a drilling tool carrying signal, and transmits the drilling tool carrying signal to the control system, which determines whether the drilling tool is carried normally; if the drilling tool is carried normally, the door opening power of the door opening and closing mechanism (2) is cut off and the drilling tool is lifted normally; otherwise, the drilling tool lifting action is stopped; S7: The loaded door-opening prevention mechanism (3) is acted upon by the drilling tool, locking the door-opening and closing mechanism (2) in the closed state.

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