A constant temperature control device for relative gravimeter

Abstract

The present invention provides a constant temperature control device for a relative gravimeter, which relates to the technical field of relative gravimeters and includes a gravimeter housing, a U-shaped positioning frame welded to the outer periphery of the rotating ring, a bevel gear rotatably mounted in the middle portion of the U-shaped positioning frame, a threaded positioning shaft threadedly mounted on the bevel gear, the tail end portion of the threaded positioning shaft passes through the peripheral wall of the rotating ring and is in contact with the track ring; a U-shaped limiting frame is welded to the head end of the threaded positioning shaft, and the two long side rods of the U-shaped limiting frame are slidably engaged with the long side rods of the U-shaped positioning frame. Through the meshing transmission of the bevel rack and the bevel gear and in conjunction with the spring pushing effect on the arc-shaped sliding shaft, the tightening operation of the rotating ring on the four steel wire ropes and the positioning operation of the rotating ring by the threaded positioning shaft can be driven and executed at one time by the simple operation of sliding the L-shaped driving rod, which helps to improve the tightening and positioning efficiency of the circulation fan.

Description

Technical Field

[0001] The present invention relates to the technical field of relative gravimeters, in particular to a constant temperature control device for a relative gravimeter. Background Art

[0002] Relative gravimeters are primarily used in oil exploration, mineral prospecting, geodesy, gravity mapping, geophysical research, defense, and military applications. In real-world applications, these instruments can face extremely complex and variable ambient temperatures. This poses a significant challenge to the performance stability of the instrument's precision components, necessitating the design of a constant temperature control device for these instruments to address this challenge.

[0003] In order to prevent the operating vibration of the circulating flow fan from being transmitted to the gravimeter, the existing constant temperature control device often adopts a flexible component that can absorb and isolate the vibration when relaxed and is connected to the gravimeter base for installation and positioning (such as a soft steel wire rope, etc.). The flexible component is tightened and straightened by a tightening drive mechanism to pull and position the circulating flow fan, and the tightening drive mechanism needs to operate the positioning component configured thereon to position it after tightening and straightening the flexible component to keep the flexible component in the tightened and straightened positioning state. However, in the existing constant temperature control device, the above operations of tightening and straightening the flexible component by operating the tightening drive mechanism and positioning the tightening drive mechanism by operating the positioning component need to be performed step by step, which is troublesome and inconvenient to operate, and is not conducive to improving the operational efficiency of pulling and positioning of the circulating flow fan. Summary of the Invention

[0004] In view of this, the present invention provides a constant temperature control device relative to the gravimeter to solve the problem that the operations of operating the tightening drive mechanism to tighten and straighten the flexible component and operating the positioning component to position the tightening drive mechanism need to be performed step by step, which is cumbersome and inconvenient to operate.

[0005] The technical solution proposed by the present invention is: a constant temperature control device for a relative gravimeter, specifically comprising a gravimeter housing, wherein four vertical support shafts are symmetrically welded to the outer edge of the bottom side of the bottom plate of the gravimeter housing;

[0006] An arc-shaped sliding shaft is slidably installed on the two adjacent vertical support shafts, and a track ring is welded on the four vertical support shafts. A swivel is rotatably installed on the track ring, and an L-shaped sliding rod is welded on the bottom of the swivel. The arc-shaped sliding shaft slides through and fits in the vertical rod section of the L-shaped sliding rod in the form of a spring push; an L-shaped driving rod is fixedly connected to the arc-shaped sliding shaft, and a bevel gear rack with an arc structure is welded on the top side of the tail end of the L-shaped driving rod; an arc guide shaft is welded between the bottom ends of the two vertical support shafts that are far away from each other, and the L-shaped The horizontal rod section of the slide rod is slidably matched with the arc guide shaft in the form of being pushed by a spring; a C-shaped positioning frame is welded to the outer periphery of the rotating ring, and a bevel gear is rotatably installed on the middle part of the C-shaped positioning frame, and a threaded positioning shaft is installed through the bevel gear in the form of a threaded screw, and the tail end part of the threaded positioning shaft passes through the peripheral wall of the rotating ring and is pressed against the track ring; a C-shaped limit frame is welded to the head end of the threaded positioning shaft, and the two long side rods of the C-shaped limit frame are slidably matched with the long side rods of the C-shaped positioning frame.

[0007] Furthermore, the elastic force of the spring that pushes the arc-shaped sliding shaft is greater than the elastic force of the spring that pushes the L-shaped sliding rod.

[0008] Furthermore, when the L-shaped driving rod slides clockwise, the bevel rack engages with the bevel gear, and the long rod section of the L-shaped driving rod is an arc-shaped structure, and the centers of the long rod section and the arc-shaped sliding shaft are collinear with the center of the rotating ring.

[0009] Furthermore, a baffle is welded to the tail end of the arc-shaped sliding shaft, and a spring for pushing the arc-shaped sliding shaft is sleeved on the arc-shaped sliding shaft and is compressed and clamped between the baffle and the upright portion of the L-shaped sliding rod;

[0010] A retaining ring is welded on the arc guide shaft, a spring for pushing the L-shaped slide rod is mounted on the arc guide shaft, and a compression clamp is placed between the horizontal rod section and the vertical support shaft of the L-shaped slide rod, and the horizontal rod section of the L-shaped slide rod rests on the retaining ring.

[0011] Furthermore, the bottom ends of the four vertical support shafts are welded with an annular base, the top ends of the annular bases are welded with a force axis, and the head ends of the L-shaped driving rods are welded with a finger-shift shaft. The finger-shift shaft and the force axis are vertically supported and spaced apart from each other.

[0012] Furthermore, a circulation fan is provided under the gravimeter housing, and two corrugated hoses are connected between the bottom plate of the gravimeter housing and the air inlet and air outlet of the circulation fan. The circulation fan is connected to the internal space of the gravimeter housing through the two corrugated hoses, and an annular base is fixed to the bottom of the circular housing of the circulation fan.

[0013] Furthermore, the parts of the four vertical support shafts located above the rotating ring are penetrated with rope holes, and four steel wire ropes are connected between the rotating ring and the circulating fan, and the four steel wire ropes are respectively guided through the four rope holes.

[0014] Furthermore, two rows of semiconductor cooling fins are symmetrically fixed to the inner periphery of the gravimeter housing, and the semiconductor cooling fins penetrate the peripheral wall of the gravimeter housing;

[0015] Four electric heating tubes are symmetrically fixed on the inner periphery of the gravimeter housing at positions on both sides of the two rows of semiconductor refrigeration plates. A mounting tube is fixedly installed inside the gravimeter housing. A mechanism and electrical components for detecting gravity are arranged inside the mounting tube. A temperature sensor is fixedly installed on the top cover of the mounting tube.

[0016] An electrical control box is fixedly installed on the top side of the top cover plate of the gravimeter housing. A temperature controller and a control electrical appliance for starting and stopping the electric heating tube and the semiconductor refrigeration plate are arranged inside the electrical control box. The temperature sensor is communicatively connected to the temperature controller, and the temperature controller is electrically connected to the control electrical appliance.

[0017] The present invention provides a constant temperature control device for a relative gravimeter, which has the following beneficial effects:

[0018] 1. An annular circulation channel with a roughly rectangular cross-section is formed between the mounting tube and the inner periphery of the gravimeter housing, the top cover plate and the bottom plate. The circulation fan is connected to the annular circulation channel through two corrugated hoses. The suction and conveying effect of the circulation fan can promote the formation of a circulating airflow in the annular circulation channel. The airflow can accelerate the circulation of heat and cold inside the gravimeter housing, promote the uniform distribution of heat and cold inside the gravimeter housing, help improve the heating and cooling efficiency inside the gravimeter housing, and indirectly improve the regulation rate of the constant temperature control device on the working temperature of the gravimeter.

[0019] Second, the two corrugated hoses are soft and can undergo a certain degree of expansion and contraction. Through their softness and expansion and contraction, they can absorb and isolate the vibrations generated by the circulation fan during operation, thus preventing the vibrations of the circulation fan from being transmitted to the gravimeter housing and the mounting tube, causing vibration interference to the gravimeter's detection operation, and helping to ensure the gravimeter's detection accuracy.

[0020] 3. After the circulating fan is tightened and positioned, its movement can be restricted. This can prevent it from shaking and shifting in the up and down or horizontal directions when following the idle gravimeter, causing falling and pulling damage and shaking wear to the two corrugated hoses, which helps to extend the service life of the two corrugated hoses.

[0021] Fourth, through the meshing transmission of the bevel rack and the bevel gear and the use of the spring pushing effect on the arc-shaped sliding shaft, the tightening operation of the swivel on the four wire ropes and the positioning operation of the swivel on the threaded positioning shaft can be performed at one time by sliding the L-shaped driving rod. This can save the trouble of performing the above two operations step by step. It is easy to operate and help improve the tightening and positioning efficiency of the circulation fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0023] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0024] In the attached figure:

[0025] Figure 1 Shows a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 A schematic diagram showing the bottom side view of the present invention as a whole is shown;

[0027] Figure 3 A schematic diagram of the inner structure of a half-section of a gravimeter housing in the present invention is shown;

[0028] Figure 4 Shows a schematic diagram of the installation position of the circulation fan in the present invention;

[0029] Figure 5 The figure shows the relative position relationship between the steel wire rope, the circulating fan and the rotating ring in the present invention;

[0030] Figure 6 A schematic diagram showing the installation position of the arc-shaped guide shaft in the present invention is shown;

[0031] Figure 7 A schematic diagram showing the installation position of the arc-shaped sliding shaft in the present invention is shown;

[0032] Figure 8 A schematic diagram showing the disassembled state of the swivel ring in the present invention is shown;

[0033] Figure 9 It shows a schematic cross-sectional structure diagram of the rotating ring and the track ring of the present invention;

[0034] Figure 10 The present invention shows Figure 9 A schematic diagram of the enlarged structure of part A;

[0035] Figure 11 The electrical control flow chart of the present invention is shown.

[0036] List of reference numerals:

[0037] 1. Gravimeter housing; 101. Vertical support shaft; 1011. Mounting block; 1012. Rope threading hole; 102. Short pipe;

[0038] 2. Steel wire rope;

[0039] 3. Rotating ring; 301. L-shaped slide bar; 302. U-shaped positioning frame; 303. Bevel gear; 304. Threaded positioning shaft; 305. U-shaped limit frame;

[0040] 4. Circulating fan; 401. Wind hood; 402. Corrugated hose; 403. Ring base; 404. Mounting ring; 4041. Mounting ear plate;

[0041] 5. Arc-shaped sliding shaft; 501. Horizontal support rod; 502. Baffle;

[0042] 6. L-shaped driving rod; 601. finger shift shaft; 602. tapered rack;

[0043] 7. Temperature sensor;

[0044] 8. Install the cylinder;

[0045] 9. Threaded fixing shaft; 901. Locking nut;

[0046] 10. Ring base; 1001. Focus axis;

[0047] 11. Arc guide shaft; 1101. Retaining ring;

[0048] 12. Semiconductor refrigeration chip;

[0049] 13. Electric heating tube;

[0050] 14. Orbital ring;

[0051] 15. Electric control box. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] The following is an embodiment of the present invention, please refer to Figures 1 to 11 :

[0054] This embodiment provides a constant temperature control device for a relative gravimeter, comprising a gravimeter housing 1, wherein four vertical support shafts 101 are symmetrically welded to the outer edge of the bottom side of the bottom plate of the gravimeter housing 1;

[0055] The arc-shaped sliding shaft 5 is slidably mounted on two adjacent vertical support shafts 101, and the track ring 14 (such as Figure 8 As shown in FIG, a swivel 3 is rotatably mounted on the track ring 14, an L-shaped slide rod 301 is welded to the bottom of the swivel 3, and an arc-shaped slide shaft 5 is slidably fitted with the vertical rod section of the L-shaped slide rod 301 in the form of a spring push; an L-shaped drive rod 6 is fixedly connected to the arc-shaped slide shaft 5, and an arc-shaped bevel gear rack 602 is welded to the top side of the tail end of the L-shaped drive rod 6; an arc-shaped guide shaft 11 is welded between the bottom ends of the two vertical support shafts 101 that are far away from each other, and the horizontal portion of the L-shaped slide rod 301 is welded to the horizontal portion of the L-shaped slide rod 301. The rod segment is slidably matched with the arc guide shaft 11 in the form of a spring push; a C-shaped positioning frame 302 is welded to the outer periphery of the swivel 3, and a bevel gear 303 is rotatably installed in the middle part of the C-shaped positioning frame 302, and a threaded positioning shaft 304 is installed through the bevel gear 303 in the form of a threaded screw; a C-shaped limit frame 305 is welded to the head end of the threaded positioning shaft 304, and the two long side rods of the C-shaped limit frame 305 are slidably matched with the long side rods of the C-shaped positioning frame 302.

[0056] Preferably, the elastic force of the spring that pushes the arc-shaped sliding shaft 5 is greater than the elastic force of the spring that pushes the L-shaped sliding rod 301 .

[0057] Preferably, the long rod section of the L-shaped driving rod 6 is an arc-shaped structure, and the centers of the long rod section and the arc-shaped sliding shaft 5 are collinear with the center of the rotating ring 3 .

[0058] Preferably, a baffle 502 is welded to the tail end of the arc sliding shaft 5, and a spring for pushing the arc sliding shaft 5 is sleeved on the arc sliding shaft 5 and is compressed and clamped between the baffle 502 and the vertical part of the L-shaped sliding rod 301; mounting blocks 1011 are welded on the lower halves of the two adjacent vertical support shafts 101, and the arc sliding shaft 5 and the two mounting blocks 1011 are slidably fitted through them, and two horizontal support rods 501 are welded on the arc sliding shaft 5 at intervals, and the head ends of the two horizontal support rods 501 are welded and fixed to the long rod section of the L-shaped driving rod 6; a baffle ring 1101 is welded and sleeved on the arc guide shaft 11, and a spring for pushing the L-shaped sliding rod 301 is sleeved on the arc guide shaft 11, and the compression clamp is placed between the horizontal rod section of the L-shaped sliding rod 301 and the vertical support shaft 101, and the horizontal rod section of the L-shaped sliding rod 301 rests on the baffle ring 1101.

[0059] Preferably, the bottom ends of the four vertical support shafts 101 are welded with an annular base 10, the top ends of the annular base 10 are welded with a force axis 1001, and the head end of the L-shaped driving rod 6 is welded with a finger-shift shaft 601. The finger-shift shaft 601 and the force axis 1001 are vertically supported and spaced apart from each other.

[0060] Preferably, a circulating fan 4 is provided below the gravimeter housing 1. Two corrugated hoses 402 are connected between the bottom plate of the gravimeter housing 1 and the air inlet and air outlet of the circulating fan 4. The circulating fan 4 is communicated with the internal space of the gravimeter housing 1 through the two corrugated hoses 402. The bottom of the circumferential housing of the circulating fan 4 is fixedly connected with an annular base 403. The circulating fan 4 is an axial flow fan, and two mounting rings 404 (such as Figure 10 As shown in the figure, two conical wind collecting covers 401 are symmetrically fixedly connected to the two mounting rings 404, and two short pipes 102 are symmetrically welded to the bottom side of the bottom plate of the gravimeter housing 1. The head ends of the two corrugated hoses 402 are respectively connected to the two short pipes 102, and the tail ends are respectively connected to the air outlets on the opposite sides of the two wind collecting covers 401.

[0061] Preferably, the parts of the four vertical support shafts 101 located above the swivel 3 are penetrated by rope holes 1012, and four steel wire ropes 2 are connected between the swivel 3 and the circulation fan 4, and the four steel wire ropes 2 are respectively passed through the four rope holes 1012; two mounting ear plates 4041 are symmetrically welded on the outer periphery of the two mounting rings 404, and four threaded fixing shafts 9 are symmetrically welded on the four mounting ear plates 4041, and four threaded fixing shafts 9 are symmetrically welded on the top of the swivel 3, and locking nuts 901 are installed on the threaded fixing shafts 9 in the form of threaded screws, and the head ends of the four steel wire ropes 2 are respectively wound around the four threaded fixing shafts 9 of the circulation fan 4, and the tail ends are respectively wound around the four threaded fixing shafts 9 of the swivel 3, and the head and tail ends of the steel wire rope 2 are squeezed and fixed by the locking nuts 901.

[0062] Preferably, the cross section of the track ring 14 is a T-shaped structure, and an annular track groove with a T-shaped cross section is provided inside the rotating ring 3 , and the annular track groove rotates in conjunction with the track ring 14 .

[0063] Preferably, two rows of semiconductor cooling sheets 12 (such as Figure 3As shown), the semiconductor refrigeration plate 12 passes through the peripheral wall of the gravimeter housing 1; four electric heating tubes 13 are symmetrically fixed on the inner periphery of the gravimeter housing 1 at positions on both sides of the two rows of semiconductor refrigeration plates 12, and a mounting cylinder 8 is fixedly installed inside the gravimeter housing 1. The mounting cylinder 8 is provided with a mechanism and electrical components for detecting gravity, and a temperature sensor 7 is fixedly installed on the top cover plate of the mounting cylinder 8; an electric control box 15 is fixedly installed on the top side of the top cover plate of the gravimeter housing 1, and a temperature controller and a control electrical appliance for starting and stopping the electric heating tubes 13 and the semiconductor refrigeration plate 12 are provided inside the electric control box 15. The temperature sensor 7 is communicatively connected to the temperature controller, and the temperature controller is electrically connected to the control electrical appliance.

[0064] It is worth noting that the selection, model specifications, connection and wiring methods between the control electrical appliances, temperature controllers and temperature sensors 7, as well as the control principles, are prior art for technicians in this field engaged in equipment automation design, modification, maintenance and testing, so they will not be described in detail again.

[0065] The following is a detailed explanation of the specific details, implementation steps, functions and interrelationships of the above features, as well as their role in implementing this technical solution:

[0066] An annular circulation channel with a roughly rectangular cross-section is formed between the mounting tube 8 and the inner periphery, the top cover plate and the bottom plate of the gravimeter housing 1. The circulation fan 4 is connected to the annular circulation channel through two corrugated hoses 402. The suction and conveying effect of the circulation fan 4 can promote the formation of a circulating airflow in the annular circulation channel. The airflow can accelerate the circulation of heat and cold inside the gravimeter housing 1, promote the uniform diffusion of heat and cold inside the gravimeter housing 1, help to improve the heating and cooling efficiency inside the gravimeter housing 1, and indirectly improve the control rate of the constant temperature control device on the working temperature of the gravimeter; the semiconductor refrigeration plate 12 cools after being powered on, providing cold capacity for the control and cooling of the gravimeter, and the electric heating tube 13 heats after being powered on, providing heat for the control and cooling of the gravimeter.

[0067] The two corrugated hoses 402 are soft and can undergo a certain degree of expansion and contraction deformation. Through their softness and expansion and contraction deformation, they can absorb and isolate the vibrations generated during the operation of the circulating fan 4, thereby preventing the operating vibrations of the circulating fan 4 from being transmitted to the gravimeter housing 1 and the mounting tube 8 through the corrugated hoses 4, causing vibration interference to the detection operation of the gravimeter, and helping to ensure the detection accuracy of the gravimeter.

[0068] When transferring the idle gravimeter, the circulation fan 4 needs to be tightened and positioned by the four steel wire ropes 2; when the four steel wire ropes 2 are loose, the parts between the vertical support shaft 101 and the circulation fan 4 are in a bent redundant state; rotating the swivel 3 clockwise can tighten and straighten the bent redundant parts of the four steel wire ropes 2. After the parts are tightened and straightened, the circulation fan 4 can slide upward and tighten and position by utilizing the pulling force acting on the parts. After the circulation fan 4 is tightened and positioned, the annular base 403 is separated from the ground at the gravity detection position, and the circulation fan 4 is positioned and maintained at the center position of the space between the four vertical support shafts 101; after the circulation fan 4 is tightened and positioned, it can be restricted from moving, which can prevent it from shaking and shifting in the up and down or horizontal directions when following the idle gravimeter to be transferred, causing falling damage and shaking wear to the two corrugated hoses 402, which helps to extend the service life of the two corrugated hoses 402.

[0069] Rotating the swivel 3 counterclockwise can release the pulling force acting on the four steel wire ropes 2, so that the four steel wire ropes 2 are relaxed. When the four steel wire ropes 2 are in a relaxed state, the tensioning holding force acting on the circulation fan 4 can be released. At this time, the circulation fan 4 can slide down by its gravity and land on the ground at the gravity detection position; when in use, the gravimeter is transferred to the gravity detection position as a whole, and supported on the ground at this position by the annular base 10, and the four steel wire ropes 2 are relaxed to make the circulation fan 4 and the annular base 403 slide down, and the annular base 403 is controlled to fall and support on the ground at the gravity detection position.

[0070] When the bevel gear 303 rotates forward and backward, it can push and drive the threaded positioning shaft 304 to slide radially inward and outward along the swivel 3. When the threaded positioning shaft 304 slides inward, its head end penetrates the peripheral wall of the swivel 3 and presses against the track ring 14. At this time, the threaded positioning shaft 304 can be tightly fixed on the track ring 14, and the swivel 3 is positioned in the use state after clockwise rotation. When the swivel 3 is positioned in this state, the four steel wire ropes 2 can be kept in a tightened state, and the circulating fan 4 can be kept in a tightened and positioned state. When the threaded positioning shaft 304 slides outward and separates from the track ring 14, the swivel 3 can be loosened.

[0071] The L-shaped driving rod 6 can drive the arc sliding shaft 5 to slide in a clockwise or counterclockwise direction; through the power transmission of the spring on the arc sliding shaft 5, the L-shaped driving rod 6 can push the L-shaped sliding rod 301 and the rotating ring 3 to slide in the same direction when driving the arc sliding shaft 5 to slide in a clockwise direction, thereby tightening and positioning the circulation fan 4. In this process, when the circulation fan 4 is tightened and positioned and the steel wire ropes 2 at all four sides are tightened, the rotating ring 3 is pulled in the reverse direction by the steel wire ropes 2 stretched at all four sides to limit the position and stop rotating. After the rotating ring 3 and the L-shaped sliding rod 301 stop rotating, the L-shaped driving rod 6 and the arc sliding shaft 5 continue to slide in a clockwise direction. At this time, due to the stopping blocking effect of the L-shaped sliding rod 301, the arc The sliding shaft 5 begins to compress the spring thereon, and then as the L-shaped driving rod 6 continues to slide, the bevel rack 602 contacts and meshes with the bevel gear 303 and drives the bevel gear 303 to rotate forward. When the bevel gear 303 rotates forward, it pushes and drives the threaded positioning shaft 304 to slide inward for positioning. In this way, through the meshing transmission of the bevel rack 602 and the bevel gear 303 and the spring pushing effect on the arc-shaped sliding shaft 5, the tightening operation of the four-way wire rope 2 by the swivel 3 and the positioning operation of the swivel 3 by the threaded positioning shaft 304 can be driven and executed at one time by the simple operation of sliding the L-shaped driving rod 6, which can save the trouble of performing the above two operations step by step. , easy to operate and use, which helps to improve the tensioning and positioning efficiency of the circulating fan 4; since the elastic force of the spring on the arc sliding shaft 5 is greater than the elastic force of the spring on the arc guide shaft 11, when the arc sliding shaft 5 is driven to slide clockwise, the top thrust of the spring on it can be applied to the L-shaped sliding rod 301, driving the L-shaped sliding rod 301 to slide and compress the spring on the arc guide shaft 11, so as to ensure that the L-shaped sliding rod 301 and the rotating ring 3 can overcome the reverse thrust of the spring on the arc guide shaft 11 and slide normally in the clockwise direction; when the L-shaped driving rod 6 drives the arc sliding shaft 5 to slide counterclockwise, the bevel rack 602 engages to drive the bevel gear 303 to reverse, and the bevel gear 303 During reversal, the threaded positioning shaft 304 is pushed forward to slide outward, loosening the swivel 3. After the swivel 3 is loosened, the bevel rack 602 slides and separates from the bevel gear 303. At this time, the L-shaped slide bar 301 and the swivel 3 can automatically slide back and reset in the counterclockwise direction under the reverse push effect of the spring compressed on the arc guide shaft 11, and at the same time, the arc slide shaft 5 and the L-shaped drive rod 6 can also automatically slide back and reset in the counterclockwise direction under the reverse push of the spring compressed on the arc slide shaft 5, preparing for tightening and positioning the circulating fan 4 again; when the swivel 3 slides and resets in the counterclockwise direction, the four wire ropes 2 return to a relaxed state and release their tightening and positioning effect on the circulating fan 4.

[0072] The L-shaped drive rod 6 can be driven to slide in a clockwise or counterclockwise direction through the finger-shift shaft 601. When the L-shaped drive rod 6 is slidingly driven, one hand is required to hold the finger-shift shaft 601 and the other hand is required to hold the force shaft 1001. The gravimeter can be positioned as a whole by holding the force shaft 1001 by the hand, thereby preventing the gravimeter from lacking positioning and being driven to shift and overturn by the pulling force applied to the finger-shift shaft 601 by the hand when the L-shaped drive rod 6 is slidingly driven, causing the sliding drive operation of the L-shaped drive rod 6 to fail to be implemented normally.

[0073] Working principle: The temperature controller is preset with a constant temperature control temperature range. When in use, when the temperature sensor 7 detects that the working temperature inside the gravimeter housing 1 is greater than the highest value of the temperature range, the temperature controller triggers the cooling mechanism of the temperature controller. At this time, the temperature controller connects the power supply of the semiconductor refrigeration chip 12 through the control electrical appliance of the semiconductor refrigeration chip 12, controls the semiconductor refrigeration chip 12 to start refrigeration and cool down the working temperature. When the working temperature is reduced to the middle value of the temperature range, the cooling mechanism of the temperature controller is released. At this time, the temperature controller cuts off the power supply of the semiconductor refrigeration chip 12 and turns off the semiconductor refrigeration chip 12. When the temperature sensor 7 detects that the working temperature inside the gravimeter housing 1 is lower than the lowest value of the temperature range, the temperature controller triggers the heating mechanism of the temperature controller. At this time, the temperature controller connects the power supply of the electric heating tube 13 through the control electrical appliance of the electric heating tube 13, controls the electric heating tube 13 to start heating and heat the working temperature. When the working temperature is raised to the middle value of the temperature range, the heating mechanism of the temperature controller is released. At this time, the temperature controller cuts off the power supply of the electric heating tube 13, turns off the electric heating tube 13, and stops the heating and heating operation. This reciprocating process can achieve constant control of the working temperature of the gravimeter.

[0074] In this article, there are several points to note:

[0075] 1. The drawings of the embodiments of the present invention only relate to the structures related to the embodiments of the present invention. Other structures may refer to conventional designs.

[0076] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to form new embodiments.

[0077] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A constant temperature control device for a relative gravimeter, comprising a gravimeter housing (1), and four vertical support shafts (101) are symmetrically welded to the outer eaves of the bottom side of the bottom plate of the gravimeter housing (1); It is characterized in that An arc-shaped sliding shaft (5) is slidably mounted on two adjacent vertical support shafts (101). A track ring (14) is welded and sleeved on the four vertical support shafts (101). A rotating ring (3) is rotatably mounted on the track ring (14). An L-shaped sliding rod (301) is welded to the bottom of the rotating ring (3). The arc-shaped sliding shaft (5) is in through-sliding fit with the vertical rod section of the L-shaped sliding rod (301) in a form of being pushed by a spring. An L-shaped driving rod (6) is fixedly connected to the arc-shaped sliding shaft (5). An arc-shaped bevel gear rack (602) is welded to the top side of the tail end portion of the L-shaped driving rod (6). An arc-shaped guide shaft (11) is welded between the bottom end portions of the two mutually separated vertical support shafts (101). The horizontal rod section of the L-shaped sliding rod (301) is in sliding fit with the arc-shaped guide shaft (11) in a form of being pushed by a spring. A U-shaped positioning frame (302) is welded to the outer circumference of the rotating ring (3). A bevel gear (303) is rotatably mounted in the middle portion of the U-shaped positioning frame (302). A threaded positioning shaft (304) is installed through the bevel gear (303) in a form of being screwed. The tail end portion of the threaded positioning shaft (304) penetrates through the circumferential wall of the rotating ring (3) and is in pressing contact with the track ring (14). A U-shaped limiting frame (305) is welded to the head end of the threaded positioning shaft (304). The two long side rods of the U-shaped limiting frame (305) are in through-sliding fit with the long side rods of the U-shaped positioning frame (302); Through holes (1012) are formed through the portions of the four vertical support shafts (101) above the rotating ring (3). Four steel wire ropes (2) are connected between the rotating ring (3) and a circulation fan (4). The four steel wire ropes (2) respectively pass through the four through holes (1012).

2. A constant temperature control device for a relative gravimeter according to claim 1, characterized in that: The elastic force of the spring that pushes the arc-shaped sliding shaft (5) is greater than the elastic force of the spring that pushes the L-shaped sliding rod (301).

3. The constant temperature control device of a relative gravimeter according to claim 1, characterized in that: When the L-shaped driving rod (6) slides in the clockwise direction, the bevel gear rack (602) contacts and meshes with the bevel gear (303). The long rod section of the L-shaped driving rod (the long rod section is of an arc-shaped structure) and the center of the arc-shaped sliding shaft (5) are collinear with the center of the rotating ring (3).

4. The constant temperature control device for a relative gravimeter according to claim 1, characterized in that: A retaining disc (502) is welded to the tail end of the arc-shaped sliding shaft (5). The spring that pushes the arc-shaped sliding shaft (5) is sleeved on the arc-shaped sliding shaft (5) and is compressed and clamped between the retaining disc (502) and the vertical portion of the L-shaped sliding rod (301); A retaining ring (1101) is welded and sleeved on the arc-shaped guide shaft (11). The spring that pushes the L-shaped sliding rod (301) is sleeved on the arc-shaped guide shaft (11) and is compressed and clamped between the horizontal rod section of the L-shaped sliding rod (301) and the vertical support shaft (101). The horizontal rod section of the L-shaped sliding rod (301) abuts against the retaining ring (1101).

5. The constant temperature control device for a relative gravimeter according to claim 1, characterized in that: The bottom ends of the four vertical support shafts (101) are welded with an annular base (10), the top ends of the annular base (10) are welded with a force shaft (1001), the head end of the L-shaped driving rod (6) is welded with a finger-shifting shaft (601), and the finger-shifting shaft (601) and the force shaft (1001) are vertically supported and spaced apart from each other.

6. The constant temperature control device for a relative gravimeter according to claim 1, characterized in that: A circulating fan (4) is provided below the gravimeter housing (1); two corrugated hoses (402) are connected between the bottom plate of the gravimeter housing (1) and the air inlet and air outlet of the circulating fan (4); the circulating fan (4) is connected to the internal space of the gravimeter housing (1) via the two corrugated hoses (402); and an annular base (403) is fixedly connected to the bottom of the circumferential housing of the circulating fan (4).

7. A constant temperature control device for a relative gravimeter according to claim 6, characterized in that: Two rows of semiconductor cooling fins (12) are symmetrically fixed to the inner periphery of the gravimeter housing (1), and the semiconductor cooling fins (12) penetrate the peripheral wall of the gravimeter housing (1); Four electric heating tubes (13) are symmetrically fixed to the inner periphery of the gravimeter housing (1) at positions on both sides of the two rows of semiconductor cooling sheets (12); a mounting tube (8) is fixedly installed inside the gravimeter housing (1); a mechanism and electrical components for detecting gravity are arranged inside the mounting tube (8); and a temperature sensor (7) is fixedly installed on the top cover plate of the mounting tube (8); An electric control box (15) is fixedly mounted on the top side of the top cover of the gravimeter housing (1). A temperature controller and a control electrical appliance for switching the electric heating tube (13) and the semiconductor refrigeration plate (12) on and off are arranged inside the electric control box (15). The temperature sensor (7) is communicatively connected to the temperature controller, and the temperature controller is electrically connected to the control electrical appliance.

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