Underground detector

Abstract

The utility model relates to the technical field of measurement, in particular to an underground detector, which comprises a detector body and a lifting assembly. The lifting assembly comprises a mounting shell, a traction rope, a plurality of screw rods, a driving mechanism, a plurality of sliding blocks, a plurality of ejector rods and a plurality of arc-shaped blocks; during use, the driving mechanism drives the plurality of screws to rotate, the plurality of screws drive the plurality of sliders to slide, the plurality of sliders drive the plurality of ejector rods, so that the plurality of arc-shaped blocks extend out in four directions, a pulling rope is held by a hand, the detector body is slowly put into a well, and when shaking occurs, the arc-shaped blocks collide with a well wall, so that the detector body is prevented from being damaged by collision. After the detector body descends to a required position, the driving mechanism is started again, so that the plurality of arc-shaped blocks further extend in four directions and abut against the well wall, and the detector body is stably supported in the well; due to the fact that the four arc-shaped blocks are adopted for preventing collision in the front direction, the rear direction, the left direction and the right direction, collision damage can be better avoided in the descending process.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a downhole geophone. Background Art

[0002] In the process of geophysical exploration, downhole geophones are needed, but existing downhole geophones are prone to shaking and colliding with the well wall, causing damage.

[0003] The prior art (CN217506141U) discloses a downhole detector for geophysical prospecting, in which the detector body is installed at the bottom of a protective shell, a traction rope is arranged at the top of the protective shell, the other end of the traction rope is connected to a control end, and two sets of ball screws are arranged inside the protective shell, which are driven by a bevel gear set. Each set of ball screws drives a linkage rod to slide, and the two linkage rods pass through the protective shell. Two top plates are installed. When the detector body shakes, the two top plates first contact the well wall to reduce the collision with the detector body and protect the detector body. When the two top plates are fully extended, the top plates on both sides support the well wall, so that the position of the protective shell is fixed to prevent the protective shell from shaking and affect the detection data.

[0004] However, the above method only provides collision protection in the left and right directions, and the downhole geophone will shake in any direction of front, back, left, and right during the descent process, so the anti-collision protection of the downhole geophone is not perfect. Utility Model Content

[0005] The utility model aims to provide a downhole geophone which can better avoid collision damage during the descent process.

[0006] To achieve the above-mentioned purpose, the utility model provides a downhole geophone, comprising a geophone body and a lifting assembly;

[0007] The lifting assembly includes a mounting shell, a traction rope, a plurality of screw rods, a driving mechanism, a plurality of sliders, a plurality of ejector rods and a plurality of arc blocks;

[0008] The mounting shell is fixedly connected to the detector body and is located at the top of the detector body; the traction rope is fixedly connected to the mounting shell and is located at the top of the mounting shell; the plurality of screw rods are rotatably connected to the mounting shell and are respectively located inside the mounting shell; the driving mechanism is arranged inside the mounting shell; the plurality of sliders are slidably connected to the mounting shell and are respectively threadedly connected to the plurality of screw rods and are respectively penetrated by the plurality of screw rods; the plurality of push rods are respectively slidably connected to the mounting shell and are respectively fixedly connected to the plurality of sliders and respectively pass through the mounting shell; the plurality of arc blocks are respectively fixedly connected to the plurality of push rods and are respectively located on one side of the plurality of push rods.

[0009] Wherein, the lifting assembly further comprises a plurality of buffer pads; the plurality of buffer pads are respectively fixedly connected to the plurality of arc blocks and are respectively located on one side of the plurality of arc blocks.

[0010] Among them, the lifting assembly also includes a bracket, a winding roller and a crank; the bracket is located above the mounting shell; the winding roller is rotatably connected to the bracket, and is fixedly connected to the traction rope, and is located on the inner side of the bracket; the crank is fixedly connected to the winding roller, and is located on one side of the winding roller.

[0011] Wherein, the driving mechanism includes a motor, a driving bevel gear and a plurality of driven bevel gears; the motor is fixedly connected to the mounting shell and is located inside the mounting shell; the driving bevel gear is fixedly connected to the output end of the motor and is located on one side of the motor; the plurality of driven bevel gears are respectively fixedly connected to the plurality of screws and are respectively meshed with the driving bevel gear.

[0012] Wherein, the lifting assembly further includes a guiding mechanism; the guiding mechanism is arranged on the inner side of the bracket.

[0013] Wherein, the guiding mechanism comprises two supporting rods and a guiding ring; the two supporting rods are respectively fixedly connected to the bracket and are respectively located on the inner side of the bracket; the guiding ring is respectively fixedly connected to the two supporting rods and is located between the two supporting rods.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By providing the mounting shell, the plurality of screw rods, the driving mechanism, the plurality of sliders, the plurality of push rods and the plurality of arc blocks, the four arc blocks can be used for collision prevention in the front, back, left and right directions, thereby better avoiding collision damage during the process of lowering the detector body.

[0016] 2. By setting a plurality of the buffer pads, the rigid impact between the arc block and the well wall is converted into a flexible impact, thereby reducing the collision vibration as much as possible.

[0017] 3. By providing the bracket, the winding roller and the crank handle, the traction rope can be conveniently lowered and wound up to facilitate the raising or lowering of the detector body.

[0018] 4. By setting the two support rods and the guide ring, the traction rope is constrained so that the traction rope will not swing left and right due to the interference of the winding roller, but will only be lowered vertically along the guide ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0020] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0021] Figure 2 It is a cross-sectional view of a mounting shell, a plurality of screw rods, a driving mechanism, a plurality of sliders, a plurality of ejector rods, a plurality of arc blocks and a plurality of buffer pads according to a first embodiment of the utility model.

[0022] Figure 3 yes Figure 2 A partial enlargement of detail A.

[0023] Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0024] 101-detector body, 102-lifting assembly, 103-mounting shell, 104-traction rope, 105-screw, 106-driving mechanism, 107-slider, 108-top rod, 109-arc block, 110-buffer pad, 111-bracket, 112-winding roller, 113-crank handle, 114-motor, 115-driving bevel gear, 116-driven bevel gear, 201-guide mechanism, 202-support rod, 203-guide ring. DETAILED DESCRIPTION

[0025] The first embodiment of the present application is:

[0026] See also Figure 1-Figure 3 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is a cross-sectional view of a mounting shell, a plurality of screw rods, a driving mechanism, a plurality of sliders, a plurality of ejector rods, a plurality of arc blocks and a plurality of buffer pads according to a first embodiment of the utility model. Figure 3 yes Figure 2 A partial enlargement of detail A.

[0027] The utility model provides a downhole geophone: comprising a geophone body 101 and a lifting assembly 102; the lifting assembly 102 comprises a mounting shell 103, a traction rope 104, a plurality of screws 105, a driving mechanism 106, a plurality of sliders 107, a plurality of push rods 108, a plurality of arc blocks 109, a plurality of buffer pads 110, a bracket 111, a winding roller 112 and a crank 113; the driving mechanism 106 comprises a motor 114, a driving bevel gear 115 and a plurality of driven bevel gears 116; through the above-mentioned scheme, collision damage can be better avoided during the descent process.

[0028] According to this specific implementation, the detector body 101 is a downhole detector.

[0029] Among them, the mounting shell 103 is fixedly connected to the detector body 101 and is located at the top of the detector body 101; the traction rope 104 is fixedly connected to the mounting shell 103 and is located at the top of the mounting shell 103; the plurality of screw rods 105 are respectively rotatably connected to the mounting shell 103 and are respectively located inside the mounting shell 103; the driving mechanism 106 is arranged inside the mounting shell 103; the plurality of sliders 107 are respectively slidably connected to the mounting shell 103, and are respectively threadedly connected to the plurality of screw rods 105, and are respectively penetrated by the plurality of screw rods 105; the plurality of ejector rods 108 are respectively slidably connected to the mounting shell 103, and are respectively fixedly connected to the plurality of sliders 107, and respectively pass through the mounting shell 103; the plurality of arc blocks 109 are respectively fixedly connected to the plurality of ejector rods 108, and are respectively located on one side of the plurality of ejector rods 108. The detector body 101 is installed at the bottom of the mounting shell 103, and the driving mechanism 106 is used to synchronously drive the four screw rods 105 to rotate. The rotation of the screw rods 105 can drive the slider 107 to slide, and the slider 107 drives the top rod 108 to slide, and the top rod 108 drives the arc block 109 to move; when in use, the driving mechanism 106 drives the multiple screw rods 105 to rotate, and the multiple screw rods 105 drive the multiple sliders 107 to slide, and the multiple sliders 107 drive the multiple top rods 108 to extend a part, so that the multiple arc blocks 109 extend in four directions, and then Then, holding the traction rope 104, the detector body 101 is slowly lowered into the well. During the lowering process, if there is any shaking, the arc block 109 will collide with the well wall to prevent the detector body 101 from being damaged by the collision. After descending to the required position, the driving mechanism 106 is started again to make the multiple arc blocks 109 further extend in four directions and press against the well wall, so as to fix the mounting shell 103 in the well and stably support the detector body 101. Since the four arc blocks 109 are used to prevent collision from the front, back, left and right directions, collision damage can be better avoided during the descent.

[0030] Secondly, the plurality of buffer pads 110 are respectively fixedly connected to the plurality of arc blocks 109 and are respectively located on one side of the plurality of arc blocks 109. The buffer pads 110 are used to convert the rigid impact between the arc blocks 109 and the well wall into a flexible impact, thereby reducing the collision vibration as much as possible.

[0031] Meanwhile, the bracket 111 is located above the mounting shell 103; the winding roller 112 is rotatably connected to the bracket 111, and is fixedly connected to the traction rope 104 and is located inside the bracket 111; the crank 113 is fixedly connected to the winding roller 112 and is located on one side of the winding roller 112. The bracket 111 is used to support on the ground. When not in use, the traction rope 104 is wound on the winding roller 112. When in use, the crank 113 is used to slowly rotate the winding roller 112 to lower the traction rope 104.

[0032] In addition, the motor 114 is fixedly connected to the mounting shell 103 and is located inside the mounting shell 103; the driving bevel gear 115 is fixedly connected to the output end of the motor 114 and is located on one side of the motor 114; the plurality of driven bevel gears 116 are respectively fixedly connected to the plurality of screw rods 105 and are respectively meshed with the driving bevel gear 115. The motor 114 drives the driving bevel gear 115 to rotate, the driving bevel gear 115 drives the plurality of driven bevel gears 116 to rotate, and the plurality of driven bevel gears 116 drive the plurality of screw rods 105 to rotate.

[0033] In the present embodiment, a downhole geophone is described, wherein the geophone body 101 is installed at the bottom of the mounting shell 103, and the driving mechanism 106 is used to synchronously drive the four screw rods 105 to rotate, and the rotation of the screw rods 105 can drive the slider 107 to slide, and the slider 107 drives the push rod 108 to slide, and the push rod 108 drives the arc block 109 to move; when in use, the driving mechanism 106 drives the plurality of screw rods 105 to rotate, and the plurality of screw rods 105 drive the plurality of sliders 107 to slide, and the plurality of sliders 107 drive the plurality of push rods 108 to extend a part, so that the plurality of arc blocks 109 move toward the four The device 101 is extended in four directions, and then the traction rope 104 is held to slowly lower the detector body 101 into the well. During the lowering process, if there is any shaking, the arc block 109 collides with the well wall to prevent the detector body 101 from being damaged by the collision. After descending to the required position, the driving mechanism 106 is started again to make the multiple arc blocks 109 further extend in four directions and press against the well wall, so as to fix the mounting shell 103 in the well and stably support the detector body 101. Since the four arc blocks 109 are used to prevent collision from the front, back, left and right directions, collision damage can be better avoided during the descent.

[0034] The second embodiment of the present application is:

[0035] Based on the first embodiment, please refer to Figure 4 ,in, Figure 4It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0036] The lifting assembly 102 of the downhole geophone provided by the utility model further includes a guide mechanism 201 ; the guide mechanism 201 includes two support rods 202 and a guide ring 203 .

[0037] According to this specific embodiment, the guide mechanism 201 is disposed inside the bracket 111. The guide mechanism 201 is used to guide the traction rope 104 so that the traction rope 104 is always lowered from the center of the wellhead.

[0038] The two support rods 202 are respectively fixedly connected to the bracket 111 and are respectively located inside the bracket 111; the guide ring 203 is respectively fixedly connected to the two support rods 202 and is located between the two support rods 202. The two support rods 202 support the guide ring 203, which is located above the center of the mounting shell 103. The guide ring 203 constrains the traction rope 104, so that the traction rope 104 will not swing left and right due to the interference of the winding roller 112, but will only be vertically lowered along the guide ring 203.

[0039] In the downhole detector described in this embodiment, the two support rods 202 support the guide ring 203, and the guide ring 203 is located above the center of the mounting shell 103. The guide ring 203 constrains the traction rope 104 so that the traction rope 104 will not swing left and right due to the interference of the winding roller 112, but will only be lowered vertically along the guide ring 203.

[0040] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A downhole geophone, comprising a geophone body; characterized in that: Also included is a lifting assembly; The lifting assembly includes a mounting shell, a traction rope, a plurality of screw rods, a driving mechanism, a plurality of sliders, a plurality of ejector rods and a plurality of arc blocks; The mounting shell is fixedly connected to the detector body and is located at the top of the detector body; the traction rope is fixedly connected to the mounting shell and is located at the top of the mounting shell; the plurality of screw rods are rotatably connected to the mounting shell and are respectively located inside the mounting shell; the driving mechanism is arranged inside the mounting shell; the plurality of sliders are respectively slidably connected to the mounting shell and are respectively threadedly connected to the plurality of screw rods and are respectively penetrated by the plurality of screw rods; the plurality of push rods are respectively slidably connected to the mounting shell and are respectively fixedly connected to the plurality of sliders and respectively pass through the mounting shell; The plurality of arc blocks are respectively fixedly connected to the plurality of push rods and are respectively located on one side of the plurality of push rods.

2. A downhole geophone as claimed in claim 1, characterized in that: The lifting assembly further comprises a plurality of buffer pads; the plurality of buffer pads are respectively fixedly connected to the plurality of arc-shaped blocks and are respectively located on one side of the plurality of arc-shaped blocks.

3. A downhole geophone as claimed in claim 2, characterized in that: The lifting assembly also includes a bracket, a winding roller and a crank; the bracket is located above the mounting shell; the winding roller is rotatably connected to the bracket, and is fixedly connected to the traction rope and is located on the inner side of the bracket; the crank is fixedly connected to the winding roller and is located on one side of the winding roller.

4. A downhole geophone as claimed in claim 3, characterized in that: The driving mechanism includes a motor, a driving bevel gear and a plurality of driven bevel gears; the motor is fixedly connected to the mounting shell and is located inside the mounting shell; the driving bevel gear is fixedly connected to the output end of the motor and is located on one side of the motor; the plurality of driven bevel gears are respectively fixedly connected to the plurality of screws and are respectively meshed with the driving bevel gears.

5. A downhole geophone as claimed in claim 4, characterized in that: The lifting assembly further comprises a guide mechanism; the guide mechanism is arranged inside the bracket.

6. A downhole geophone as claimed in claim 5, characterized in that: The guide mechanism comprises two support rods and a guide ring; the two support rods are respectively fixedly connected to the bracket and are respectively located at the inner side of the bracket; the guide ring is respectively fixedly connected to the two support rods and is located between the two support rods.

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