Fixing mechanism of drill rod lifting frame

Abstract

The utility model discloses a fixing mechanism of a drill rod lifting frame, and relates to the field of drill rod lifting frames, the fixing mechanism comprises a lifting frame body, a lifting module is arranged in the middle of the lifting frame body, stepping motors are fixed to the lower portions of the middles of the two sides of the lifting frame body, and a first worm and a second worm are fixed to the two power output ends of each stepping motor respectively. According to the device, a switch for controlling a stepping motor is started to drive two first supporting rods and two second supporting rods to rotate at the same time, so that after the stepping motor is started, the bottom ends of the first supporting rods and the bottom ends of the second supporting rods can touch the ground at the same time, and the stepping motor has a self-locking function during power failure; and the first worm and the second worm can be kept not to rotate continuously, the function of limiting the first supporting rod and the second supporting rod is achieved through cooperation of the worm gear and the worm, and therefore the effect that supporting is stably conducted without being affected by vibration is achieved.

Description

Technical Field

[0001] This application relates to the field of drill pipe lifting frames, and more particularly to a fixing mechanism for a drill pipe lifting frame. Background Technology

[0002] A drilling rig is a piece of equipment specifically used for geological exploration. It drives its built-in drill bit to drill underground and obtain physical geological data. The drill bit consists of a drill bit and a drill rod. When the drill bit reaches a certain depth, the drill rod needs to be lifted to the surface, and then a core sample (rock, soil, concrete, etc.) is extracted from the drill rod. The drilling process is then repeated. The entire process involves continuously repeating the drilling, rod lifting, core sampling, and drilling sequence. The drill rod is lifted using steel wire ropes, and the top lifting device is usually fixed to a lifting frame.

[0003] The lifting frame is usually quite tall and needs to be supported on both sides of its bottom. The existing support method is usually to use steel rods on site, with one end fixed to the lifting frame and the other end fixed to the ground. They are usually bolted to the lifting frame. However, the lifting frame will vibrate during operation, which can easily cause the lifting frame to separate from the steel rod, requiring frequent tightening of the bolts. Utility Model Content

[0004] To address the problem that vibrations during operation can easily cause the lifting frame to separate from the steel rod, this application provides a fixing mechanism for the drill pipe lifting frame.

[0005] The fixing mechanism of the drill pipe lifting frame provided in this application adopts the following technical solution: it includes a lifting frame body, a lifting module is provided in the middle of the lifting frame body, stepper motors are fixed at the lower middle of both sides of the lifting frame body, a first worm and a second worm are fixed at the two power output ends of the stepper motors respectively, a first support rod and a second support rod are rotatably connected to both sides of the lifting frame body, a first worm wheel is fixed at the bottom end of one side of the first support rod, a second worm wheel is fixed at the bottom end of one side of the second support rod, a support block is movably installed at the top of both the first support rod and the second support rod, the second worm wheel meshes with the first worm, the first worm wheel meshes with the second worm, and a through hole is opened in the middle of the bottom of the lifting frame body.

[0006] By adopting the above technical solution and using a stepper motor for driving, the stepper motor has a self-locking function when the power is off, which can prevent the first worm and the second worm from continuing to rotate. The first support rod and the second support rod are limited by the cooperation of the worm wheel and the worm.

[0007] Preferably, the two stepper motors are electrically connected and controlled by the same switch, and the two stepper motors are of the same model.

[0008] By adopting the above technical solution, two stepper motors are controlled simultaneously, so that the two stepper motors rotate at the same speed and maintain the same speed, so that the speeds of the two first worm gears and the second worm gears on both sides are the same.

[0009] Preferably, there are two sets of the first support rod and the second support rod, with two sets of each set of the first support rod and two sets of the second support rod, respectively located on both sides of the lifting frame.

[0010] By adopting the above technical solution, the four first support rods and four second support rods on both sides of the lifting frame can rotate simultaneously until they are in contact with the ground, thus providing stable support for the lifting frame.

[0011] Preferably, the two first support rods in the same group are arranged symmetrically about the second worm gear at the lower center of one side of the lifting frame, and the two second support rods in the same group are arranged symmetrically about the first worm gear at the center of one side of the lifting frame.

[0012] By adopting the above technical solution, the rotation of the first worm gear and the second worm gear can drive the two first support rods and the two second support rods to rotate simultaneously, and the two first support rods and the two second support rods move in a mirror image.

[0013] Preferably, the ratio of the distance between the first worm gear and the bottom of the lifting frame to the distance between the second worm gear and the bottom of the lifting frame is equal to the ratio of the lengths of the first support rod and the second support rod.

[0014] By adopting the above technical solution, after the stepper motor has started, the bottom ends of the first support rod and the second support rod can touch the ground simultaneously, ensuring that both the first support rod and the second support rod can provide effective support.

[0015] Preferably, the top ends of the first support rod and the second support rod are rotatably connected to a connecting shaft, and a connecting block is fixed to the outer wall of the connecting shaft, and the connecting block is fixed to the support block.

[0016] By adopting the above technical solution, the support block is connected to the first support rod and the second support rod using a connecting shaft, thereby increasing the contact area between the bottom ends of the first support rod and the second support rod and the ground.

[0017] Preferably, the support block has a groove on the side away from the second support rod, and there are multiple grooves arranged vertically at equal intervals.

[0018] By adopting the above technical solution, the grooves increase the contact area between the support block and the ground, improving the support structure. The ground surface is usually soil and gravel, and the uneven support block can provide more stable support.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] 1. This application controls the stepper motor by starting the switch, which drives the two first support rods and the two second support rods to rotate simultaneously. After the stepper motor starts, the bottom ends of the first support rods and the second support rods can touch the ground at the same time. When the power is off, the stepper motor has a self-locking function, which can prevent the first and second worm gears from continuing to rotate. The worm wheel and worm gear work together to limit the first and second support rods, thereby achieving stable support without being affected by vibration.

[0021] 2. This application achieves the effect of easy assembly and disassembly by moving the lifting frame to the position where drilling is required, and then turning on the switch to control the stepper motor. The first support rod and the second support rod can be controlled to provide support. When the lifting frame is not needed, the stepper motor can be controlled to rotate in reverse. Attached Figure Description

[0022] Figure 1 This is a side view of the overall structure of a fixing mechanism for a drill pipe lifting frame according to an embodiment of this application;

[0023] Figure 2 Examples of this application Figure 1 An enlarged schematic diagram of the A-section structure;

[0024] Figure 3 This is a front view of the overall structure of an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the structure at the second support rod in an embodiment of this application;

[0026] Reference numerals in the attached drawings: 1. Lifting frame; 2. Lifting module; 3. Stepper motor; 4. First worm gear; 5. Second worm gear; 6. First worm wheel; 7. First support rod; 8. Second worm wheel; 9. Second support rod; 10. Connecting block; 12. Connecting shaft; 13. Support block; 14. Groove; 15. Through hole. Detailed Implementation

[0027] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0028] This application discloses a fixing mechanism for a drill pipe lifting frame, including a lifting frame body 1. A lifting module 2 is provided in the middle of the lifting frame body 1. Stepper motors 3 are fixed at the lower middle of both sides of the lifting frame body 1. A first worm gear 4 and a second worm gear 5 are fixed to the two power output ends of the stepper motors 3, respectively. A first support rod 7 and a second support rod 9 are rotatably connected to both sides of the lifting frame body 1. A first worm wheel 6 is fixed to the bottom end of one side of the first support rod 7, and a second worm wheel 8 is fixed to the bottom end of one side of the second support rod 9. Support blocks 13 are movably installed on the top of both the first support rod 7 and the second support rod 9. The second worm wheel 8 meshes with the first worm gear 4, and the first worm wheel 6 meshes with the second worm gear 5. A through hole 15 is provided in the middle of the bottom of the lifting frame body 1. The stepper motors 3 are used for driving. When the power is off, the stepper motors 3 have a self-locking function, which can prevent the first worm gear 4 and the second worm gear 5 from continuing to rotate. The first support rod 7 and the second support rod 9 are limited by the cooperation of the worm wheel and the worm gear.

[0029] Two stepper motors 3 are electrically connected and controlled by the same switch. The two stepper motors 3 are of the same model. By controlling the two stepper motors 3 simultaneously, the two stepper motors 3 rotate at the same speed and maintain the same speed, so that the speeds of the two first worm gears 6 and the second worm gears 8 on both sides are the same.

[0030] The first support rod 7 and the second support rod 9 are each provided in two sets. Each set of the first support rod 7 and each set of the second support rod 9 has two rods. The two sets of the first support rod 7 and the two sets of the second support rod 9 are located on both sides of the lifting frame 1, so that the four first support rods 7 and the four second support rods 9 on both sides of the lifting frame 1 rotate simultaneously until they are in contact with the ground, thus stably supporting the lifting frame 1.

[0031] Among them, the two first support rods 7 in the same group are located at the lower middle part of one side of the lifting frame 1 and are symmetrically arranged about the second worm gear 5. The two second support rods 9 in the same group are located at the middle part of one side of the lifting frame 1 and are symmetrically arranged about the first worm gear 4. By rotating the first worm wheel 6 and the second worm wheel 5, the two first support rods 7 and the two second support rods 9 can be driven to rotate simultaneously, and the two first support rods 7 and the two second support rods 9 can move in a mirror image.

[0032] The ratio of the distance between the first worm gear 6 and the bottom of the lifting frame 1 to the distance between the second worm gear 8 and the bottom of the lifting frame 1 is equal to the ratio of the lengths of the first support rod 7 and the second support rod 9. This ensures that after the stepper motor 3 is started, the bottom ends of the first support rod 7 and the second support rod 9 can simultaneously touch the ground, maintaining effective support for both the first support rod 7 and the second support rod 9.

[0033] The top ends of the first support rod 7 and the second support rod 9 are rotatably connected to a connecting shaft 12. A connecting block 10 is fixed to the outer wall of the connecting shaft 12. The connecting block 10 is fixed to the support block 13. By using the connecting shaft 12, the support block 13 is connected to the first support rod 7 and the second support rod 9, thereby increasing the contact area between the bottom ends of the first support rod 7 and the second support rod 9 and the ground.

[0034] Among them, the support block 13 has a groove 14 on the side away from the second support rod 9. There are multiple grooves 14, which are arranged vertically and equally. The grooves 14 increase the contact area between the support block 13 and the ground. The ground in the construction environment of the lifting frame 1 is usually soil and gravel. The uneven support block 13 can provide more stable support.

[0035] The implementation principle of the fixing mechanism of the drill pipe lifting frame in this embodiment is as follows: First, the lifting frame 1 is moved to the position where drilling is required. Then, the switch controlling the stepper motor 3 is turned on. The two stepper motors 3 are controlled simultaneously, so that the two stepper motors 3 rotate at the same speed, making the speeds of the two first worm gears 4 and the second worm gears 5 on both sides the same. This makes the speeds of the two first worm wheels 6 and the second worm wheels 8 on both sides the same, driving the two first support rods 7 and the two second support rods 9 to rotate simultaneously. The two first support rods 7 and the two second support rods 9 move in a mirror image. The ratio of the distance between the first worm wheel 6 and the bottom of the lifting frame 1 to the distance between the second worm wheel 8 and the bottom of the lifting frame 1 is equal to the ratio of the distance between the first support rod 7 and the second support rod 9. The ratio of the lengths of the first support rod 7 and the second support rod 9 is such that after the stepper motor 3 is started, the bottom ends of the first support rod 7 and the second support rod 9 can simultaneously touch the ground, ensuring that both the first support rod 7 and the second support rod 9 can provide effective support. This allows the four first support rods 7 and the four second support rods 9 on both sides of the lifting frame 1 to rotate simultaneously until they are in contact with the ground, providing stable support for the lifting frame 1. The contact between the support block 13 and the ground increases the contact area between the bottom ends of the first support rod 7 and the second support rod 9 and the ground. The ground surface in the construction environment of the lifting frame 1 is usually soil and gravel, and the uneven support block 13 can provide more stable support. When the lifting frame 1 is not needed, the stepper motor 1 can be controlled to rotate in the reverse direction.

[0036] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixing mechanism for a drill pipe lifting frame, comprising a lifting frame body (1), wherein a lifting module (2) is provided in the middle of the lifting frame body (1), characterized in that: Stepper motors (3) are fixed at the lower middle of both sides of the lifting frame (1). The two power output ends of the stepper motors (3) are respectively fixed with a first worm (4) and a second worm (5). A first support rod (7) and a second support rod (9) are rotatably connected to both sides of the lifting frame (1). A first worm wheel (6) is fixed at the bottom of one side of the first support rod (7), and a second worm wheel (8) is fixed at the bottom of one side of the second support rod (9). Support blocks (13) are movably installed on the top of the first support rod (7) and the second support rod (9). The second worm wheel (8) meshes with the first worm (4), and the first worm wheel (6) meshes with the second worm (5). A through hole (15) is opened through the middle of the bottom of the lifting frame (1).

2. The fixing mechanism for a drill pipe lifting frame according to claim 1, characterized in that: The two stepper motors (3) are electrically connected and controlled by the same switch, and the two stepper motors (3) are of the same model.

3. The fixing mechanism for a drill pipe lifting frame according to claim 1, characterized in that: The first support rod (7) and the second support rod (9) are each provided in two sets. Each set of the first support rod (7) and each set of the second support rod (9) are provided in two sets. The two sets of the first support rod (7) and the two sets of the second support rod (9) are located on both sides of the lifting frame (1).

4. The fixing mechanism for a drill pipe lifting frame according to claim 3, characterized in that: The two first support rods (7) in the same group are located below the middle of one side of the lifting frame (1) and are arranged symmetrically with respect to the second worm (5). The two second support rods (9) in the same group are located in the middle of one side of the lifting frame (1) and are arranged symmetrically with respect to the first worm (4).

5. The fixing mechanism for a drill pipe lifting frame according to claim 1, characterized in that: The ratio of the distance between the bottom of the first worm gear (6) and the bottom of the lifting frame (1) to the distance between the bottom of the second worm gear (8) and the bottom of the lifting frame (1) is equal to the ratio of the length of the first support rod (7) and the second support rod (9).

6. The fixing mechanism for a drill pipe lifting frame according to claim 5, characterized in that: The top ends of the first support rod (7) and the second support rod (9) are both rotatably connected to a connecting shaft (12). A connecting block (10) is fixed to the outer wall of the connecting shaft (12), and the connecting block (10) is fixed to the support block (13).

7. The fixing mechanism for a drill pipe lifting frame according to claim 6, characterized in that: The support block (13) has a groove (14) on the side away from the second support rod (9). There are multiple grooves (14), and the multiple grooves (14) are arranged vertically at equal intervals.

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