Constant temperature control device relative to gravimeter

Abstract

The invention provides a constant temperature control device of a relative gravimeter, and relates to the technical field of relative gravimeters, the constant temperature control device comprises a gravimeter shell, a U-shaped positioning frame is welded on the periphery of a rotating ring, a bevel gear is rotatably mounted in the middle of the U-shaped positioning frame, and a threaded positioning shaft is mounted on the bevel gear in a threaded screwing manner in a penetrating manner; the tail end part of the threaded positioning shaft penetrates through the peripheral wall of the rotating ring and is in abutting contact with the track ring; a U-shaped limiting frame is welded to the head end of the threaded positioning shaft, and two long side rods of the U-shaped limiting frame penetrate through and are in sliding fit with long side rods of the U-shaped positioning frame. Through meshing transmission of a bevel gear rack and a bevel gear and cooperation with the pushing effect of a spring on an arc-shaped sliding shaft, the supporting operation of a rotating ring on four steel wire pull ropes and the positioning operation of a threaded positioning shaft on the rotating ring can be driven and executed at a time through the simple operation that an L-shaped driving rod is driven in a sliding mode. Therefore, the tensioning and positioning efficiency of the circulating fan can be improved.

Description

Technical Field

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

[0002] Relative gravimeters are mainly applied to petroleum exploration, mineral exploration, geodetic surveying, gravity mapping, geophysical research, national defense, and military. In actual operation scenarios, relative gravimeters may face extremely complex and variable external environmental temperatures. This poses a great challenge to the performance stability of the precision components inside the gravimeter. Therefore, it is necessary to design a constant temperature control device for relative gravimeters to address this challenge.

[0003] In order to prevent the running vibration of the circulating flow ventilator from being transmitted to the gravimeter, existing constant temperature control devices mostly use flexible components that can absorb and isolate vibration during relaxation to connect, install, and position with the gravimeter base (such as soft wire ropes, etc.). The flexible components are tightened and straightened by a tensioning drive mechanism to pull and position the circulating flow ventilator. Moreover, after the flexible components are tightened and straightened by the tensioning drive mechanism, it is necessary to operate the positioning components arranged thereon to position it, so as to keep the flexible components in the tightened and straightened positioning state. However, in existing constant temperature control devices, the operations of tightening and straightening the flexible components by the tensioning drive mechanism and positioning the tensioning drive mechanism by the positioning components need to be performed step by step in sequence, which is relatively troublesome and inconvenient to operate and use, and is not conducive to improving the operation efficiency of pulling and positioning the circulating flow ventilator. Summary of the Invention

[0004] In view of this, the present invention provides a constant temperature control device for a relative gravimeter to solve the problem that the operations of tightening and straightening the flexible components by the tensioning drive mechanism and positioning the tensioning drive mechanism by the positioning components need to be performed step by step in sequence, which is relatively troublesome and inconvenient to operate and use.

[0005] The technical solution proposed by the present invention is: A constant temperature control device for a relative gravimeter, specifically including a gravimeter housing, and four vertical support shafts are symmetrically welded to the outer eaves of the bottom side of the bottom plate of the gravimeter housing; Arc-shaped sliding shafts are slidably mounted on two adjacent vertical support shafts. Rail rings are welded and sleeved on the four vertical support shafts. A rotating ring is rotatably mounted on the rail ring. An L-shaped sliding rod is welded to the bottom of the rotating ring. The arc-shaped sliding shaft is in through-sliding fit with the vertical rod section of the L-shaped sliding rod in a form of being pushed by a spring. An L-shaped driving rod is fixedly connected to the arc-shaped sliding shaft. A conical tooth rack with an arc-shaped structure is welded to the top side of the tail end part of the L-shaped driving rod. An arc-shaped guide shaft is welded between the bottom end parts of two mutually distant vertical support shafts. The horizontal rod section of the L-shaped sliding rod is in sliding fit with the arc-shaped guide shaft in a form of being pushed by a spring. A U-shaped positioning frame is welded to the outer periphery of the rotating ring. A bevel gear is rotatably mounted in the middle part of the U-shaped positioning frame. A threaded positioning shaft is installed through the bevel gear in a form of being screwed. The tail end part of the threaded positioning shaft penetrates through the peripheral wall of the rotating ring and is in pressing contact with the rail ring. A U-shaped limiting frame is welded to the head end of the threaded positioning shaft. Both long side rods of the U-shaped limiting frame are in through-sliding fit with the long side rods of the U-shaped positioning frame.

[0006] Further, 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.

[0007] Further, when the L-shaped driving rod slides in the clockwise direction, the conical tooth rack contacts and meshes with the bevel gear. The long rod section of the L-shaped driving rod has an arc-shaped structure, and the centers of this long rod section and the arc-shaped sliding shaft are collinear with the center of the rotating ring.

[0008] Further, a stop disk is welded to the tail end of the arc-shaped sliding shaft. The spring that pushes the arc-shaped sliding shaft is sleeved on the arc-shaped sliding shaft and is compressed and clamped between the stop disk and the vertical part of the L-shaped sliding rod. A retaining ring is welded and sleeved on the arc-shaped guide shaft. The spring that pushes the L-shaped sliding rod is sleeved on the arc-shaped guide shaft and is compressed and clamped between the horizontal rod section of the L-shaped sliding rod and the vertical support shaft. The horizontal rod section of the L-shaped sliding rod abuts against the retaining ring.

[0009] Further, a ring-shaped base is welded to the bottom ends of the four vertical support shafts. A force-applying shaft is welded to the top end of the ring-shaped base. A finger-pulling shaft is welded to the head end of the L-shaped driving rod. The finger-pulling shaft and the force-applying shaft are vertically supported and spaced apart from each other.

[0010] Further, a circulation fan is arranged below the gravity meter housing. Two corrugated hoses are connected between the bottom plate of the gravity meter housing and the air inlet end and the air outlet end of the circulation fan. The circulation fan is communicated with the internal space of the gravity meter housing through the two corrugated hoses. An annular base is fixedly connected to the bottom of the circumferential housing of the circulation fan.

[0011] Further, through rope holes are respectively and penetratingly opened in the parts of the four vertical support shafts above the rotating ring. Four steel wire ropes are connected between the rotating ring and the circulation fan, and the four steel wire ropes respectively pass through the four through rope holes.

[0012] Further, two rows of semiconductor refrigeration chips are symmetrically fixed on the inner circumference of the gravimeter housing, and the semiconductor refrigeration chips penetrate through the peripheral wall of the gravimeter housing; Four electric heating tubes are symmetrically fixed at positions on both sides of the two rows of semiconductor refrigeration chips on the inner circumference of the gravimeter housing. An installation cylinder is fixedly installed inside the gravimeter housing. An institution for detecting gravity and electrical components are arranged inside the installation cylinder. A temperature sensor is fixedly installed on the top cover plate of the installation cylinder; An electric 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 implementing start-stop conversion of the electric heating tubes and the semiconductor refrigeration chips are arranged inside the electric control box. The temperature sensor is communicatively connected to the temperature controller, and the temperature controller is electrically connected to the control electrical appliance.

[0013] A constant temperature control device for a relative gravimeter provided by the present invention has the following beneficial effects: First, an annular circulation channel with a cross-section roughly in a rectangular structure is formed at intervals between the installation cylinder and the inner circumference, the top cover plate and the bottom plate of the gravimeter housing. The circulation fan is communicated with the annular circulation channel through two corrugated hoses. Through the suction and conveying effect of the circulation fan, a circulating airflow can be promoted to form in the annular circulation channel. This airflow can accelerate the circulation of heat and cold inside the gravimeter housing, promote the uniform diffusion of heat and cold inside the gravimeter housing, and help improve the heating and cooling efficiency inside the gravimeter housing, indirectly improving the regulation rate of the working temperature of the gravimeter by the constant temperature control device.

[0014] Second, the two corrugated hoses are soft in texture and can be stretched and deformed to a certain extent. They can absorb and isolate the vibration generated during the operation of the circulation fan through their soft characteristics and stretching deformation, avoiding the operation vibration of the circulation fan being transmitted to the gravimeter housing and the installation cylinder through them, causing vibration interference to the detection operation of the gravimeter, and helping to ensure the detection accuracy of the gravimeter.

[0015] Third, after the circulation fan is tensioned and positioned, its movement can be restricted, which can prevent it from shaking and shifting in the vertical or horizontal direction when following the idle gravimeter to move, causing pendant pulling damage and shaking wear to the two corrugated hoses, and helping to extend the service life of the two corrugated hoses.

[0016] Fourth, through the meshing transmission of the bevel gear rack and the bevel gear and the cooperation with the spring pushing effect on the arc-shaped sliding shaft, the operation of the rotating ring to tighten the four wire ropes and the positioning operation of the threaded positioning shaft on the rotating ring can be driven and executed at one time through a simple operation of sliding and driving the L-shaped driving rod. This can save the trouble of sequentially executing the above two operations step by step, is convenient to operate and use, and helps to improve the tensioning and positioning efficiency of the circulation fan. Description of the Drawings

[0017] 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.

[0018] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture: Figure 1 Shows a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram showing the bottom side view of the present invention as a whole is shown; Figure 3 A schematic diagram of the inner structure of a half-section of a gravimeter housing in the present invention is shown; Figure 4 Shows a schematic diagram of the installation position of the circulation fan in the present invention; 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; Figure 6 A schematic diagram showing the installation position of the arc-shaped guide shaft in the present invention is shown; Figure 7 A schematic diagram showing the installation position of the arc-shaped sliding shaft in the present invention is shown; Figure 8 A schematic diagram showing the disassembled state of the swivel ring in the present invention is shown; Figure 9 It shows a schematic cross-sectional structure diagram of the rotating ring and the track ring of the present invention; Figure 10 The present invention shows Figure 9 A schematic diagram of the enlarged structure of part A; Figure 11 The electrical control flow chart of the present invention is shown.

[0020] List of reference numerals: 1. Gravimeter housing; 101. Vertical support shaft; 1011. Mounting block; 1012. Rope threading hole; 102. Short pipe; 2. Steel wire rope; 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; 4. Circulating fan; 401. Wind collecting hood; 402. Corrugated hose; 403. Ring base; 404. Mounting ring; 4041. Mounting ear plate; 5. Arc-shaped sliding shaft; 501. Horizontal support rod; 502. Baffle; 6. L-shaped driving rod; 601. finger shift shaft; 602. tapered rack; 7. Temperature sensor; 8. Installation cylinder; 9. Threaded fixed shaft; 901. Locking nut; 10. Ring-shaped base; 1001. Force-applying shaft; 11. Arc-shaped guide shaft; 1101. Retaining ring; 12. Semiconductor refrigeration sheet; 13. Electric heating tube; 14. Track ring; 15. Electric control box. Specific implementation manner

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0022] The following is an embodiment provided by the present invention. Please refer to Figures 1 to 11 : This embodiment provides a constant temperature control device for a relative gravimeter, including a gravimeter housing 1. Four vertical support shafts 101 are symmetrically welded to the bottom side outer eaves of the bottom plate of the gravimeter housing 1; An arc-shaped sliding shaft 5 is slidably installed on two adjacent vertical support shafts 101. A track ring 14 is welded and sleeved on the four vertical support shafts 101 (as Figure 8 shown). A rotating ring 3 is rotatably installed 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, and 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 two mutually distant 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 periphery of the rotating ring 3. A bevel gear 303 is rotatably installed 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. A U-shaped limiting frame 305 is welded to the head end of the threaded positioning shaft 304. Both 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.

[0023] 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.

[0024] 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 .

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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 .

[0030] Preferably, two rows of semiconductor cooling sheets 12 (such as Figure 3 As 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.

[0031] 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.

[0032] 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: An annular circulation channel with a substantially rectangular cross-sectional structure is formed at intervals between the inner circumference of the installation cylinder 8, 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. Through the suction and conveying effect of the circulation fan 4, a circulating airflow can be promoted to form in the annular circulation channel. This airflow can accelerate the circulation of heat and cold in the gravimeter housing 1, promote the uniform distribution and diffusion of heat and cold inside the gravimeter housing 1, help improve the heating and cooling efficiency inside the gravimeter housing 1, and indirectly increase the regulation rate of the constant temperature control device for the working temperature of the gravimeter. The semiconductor refrigeration sheet 12 cools after being powered on, providing cold for the regulation and cooling of the gravimeter, and the electric heating tube 13 heats after being powered on, providing heat for the regulation and cooling of the gravimeter.

[0033] The two corrugated hoses 402 are soft in texture and can undergo a certain degree of stretching and deformation. They can absorb and isolate the vibration generated during the operation of the circulation fan 4 through their soft characteristics and stretching deformation, preventing the operation vibration of the circulation fan 4 from being transmitted to the gravimeter housing 1 and the installation cylinder 8 through them, causing vibration interference to the detection operation of the gravimeter, and helping to ensure the detection accuracy of the gravimeter.

[0034] When transferring the idle gravimeter, it is necessary to tighten and position the circulation fan 4 through four steel wire ropes 2. When the four steel wire ropes 2 are loose, the part between the vertical support shaft 101 and the circulation fan 4 is in a bent and redundant state. By rotating the swivel 3 clockwise, the bent and redundant part of the four steel wire ropes 2 can be tightened and straightened. After this part is tightened and straightened, the circulation fan 4 can slide upward and be tightened and positioned by the pulling force acting on this part. 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 of the space between the four vertical support shafts 101. After the circulation fan 4 is tightened and positioned, its movement can be restricted, which can prevent it from shaking and shifting in the vertical or horizontal direction when following the transfer of the idle gravimeter, causing pendant pull damage and shaking wear to the two corrugated hoses 402, and helping to extend the service life of the two corrugated hoses 402.

[0035] Rotating the swivel 3 counterclockwise can release the pulling force it exerts on the four steel wire ropes 2, making the four steel wire ropes 2 loose. When the four steel wire ropes 2 are in a loose state, the tension and holding force acting on the circulation fan 4 can be released. At this time, the circulation fan 4 can slide downward by its own gravity and land on the ground at the gravity detection position. During use, the entire gravimeter is transferred to the gravity detection position, supported on the ground at this position through the annular base 10, and the four steel wire ropes 2 are loosened, causing the circulation fan 4 and the annular base 403 to slide downward, and controlling the annular base 403 to land and support on the ground at the gravity detection position.

[0036] When the bevel gear 303 rotates forward and backward, it can push and drive the threaded positioning shaft 304 to slide radially in and out along the rotating ring 3. When the threaded positioning shaft 304 slides inward, its head penetrates through the peripheral wall of the rotating ring 3 and abuts against the track ring 14. At this time, the threaded positioning shaft 304 can be tightly fixed on the track ring 14, and the rotating ring 3 can be positioned in the use state after clockwise rotation. When the rotating ring 3 is positioned in this state, the four steel wire ropes 2 can be kept in a tightened state, and the circulation 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 rotating ring 3 can be released.

[0037] The L-shaped driving rod 6 can drive the arc-shaped sliding shaft 5 to slide in the clockwise or counterclockwise direction; through the power transmission of the spring on the arc-shaped sliding shaft 5, when the L-shaped driving rod 6 drives the arc-shaped sliding shaft 5 to slide in the clockwise direction, it can push the L-shaped sliding rod 301 and the rotating ring 3 to slide in the same direction, implement tensioning and positioning on the circulating fan 4, and during this process, when the circulating fan 4 is tensioned and positioned and the four steel wire ropes 2 are tightened, the rotating ring 3 is pulled and limited in the reverse direction by the four tightened steel wire ropes 2 and stops rotating. After the rotating ring 3 and the L-shaped sliding rod 301 stop rotating, the L-shaped driving rod 6 and the arc-shaped sliding shaft 5 continue to slide in the clockwise direction. At this time, due to the stopping and blocking effect of the L-shaped sliding rod 301, the arc-shaped sliding shaft 5 begins to compress the spring on it. After that, with the continuous sliding of the L-shaped driving rod 6, the bevel gear 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 the threaded positioning shaft 304 to slide and position inward. In this way, through the meshing transmission of the bevel gear rack 602 and the bevel gear 303 and the combined use of the spring pushing effect on the arc-shaped sliding shaft 5, the tightening operation of the rotating ring 3 on the four steel wire ropes 2 and the positioning operation of the threaded positioning shaft 304 on the rotating ring 3 can be driven and executed at one time by the simple operation of sliding the L-shaped driving rod 6. This can save the trouble of sequentially performing the above two operations step by step, is convenient to operate and use, and helps to improve the tightening and positioning efficiency of the circulating fan 4; because the elastic force of the spring on the arc-shaped sliding shaft 5 is greater than the elastic force of the spring on the arc-shaped guide shaft 11, when the arc-shaped sliding shaft 5 is driven to slide in the clockwise direction, the pushing force applied to the L-shaped sliding rod 301 by the spring on it can drive the L-shaped sliding rod 301 to slide and compress the spring on the arc-shaped 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-shaped guide shaft 11 and slide normally in the clockwise direction; when the L-shaped driving rod 6 drives the arc-shaped sliding shaft 5 to slide in the counterclockwise direction, the bevel gear rack 602 meshes to drive the bevel gear 303 to rotate in reverse. When the bevel gear 303 rotates in reverse, it pushes the threaded positioning shaft 304 to slide outward to release the rotating ring 3. After the rotating ring 3 is released, the bevel gear rack 602 and the bevel gear 303 slide and separate. At this time, the L-shaped sliding rod 301 and the rotating ring 3 can automatically slide and reset in the counterclockwise direction under the reverse pushing effect of the spring compressed on the arc-shaped guide shaft 11, and at the same time, the arc-shaped sliding shaft 5 and the L-shaped driving rod 6 can also automatically slide and reset in the counterclockwise direction under the reverse pushing of the spring compressed on the arc-shaped sliding shaft 5 to prepare for tensioning and positioning the circulating fan 4 again; when the rotating ring 3 slides and resets in the counterclockwise direction, the four steel wire ropes 2 return to the relaxed state and release their tensioning and positioning effect on the circulating fan 4.

[0038] The L-shaped drive rod 6 can be driven to slide in a clockwise or counterclockwise direction by the finger-operated shaft 601. When the L-shaped drive rod 6 is driven to slide, one hand should hold the finger-operated shaft 601, and the other hand should hold the force-applying shaft 1001. By holding the force-applying shaft 1001 with the hand, the overall positioning of the gravimeter can be achieved, avoiding the situation that when the L-shaped drive rod 6 is driven to slide, the gravimeter lacks positioning and is driven to roll over by the pulling force applied to the finger-operated shaft 601 by the hand, resulting in the inability to normally implement the sliding drive operation of the L-shaped drive rod 6.

[0039] Working principle: A temperature range for constant temperature control is preset on the temperature controller. During use, when the temperature sensor 7 detects that the working temperature inside the gravimeter housing 1 is greater than the highest value of this temperature range, the cooling mechanism of the temperature controller is triggered. At this time, the temperature controller connects the power supply of the semiconductor refrigeration sheet 12 through the control electrical appliance of the semiconductor refrigeration sheet 12, controls the semiconductor refrigeration sheet 12 to start refrigerating to reduce the working temperature. When the working temperature is reduced to the intermediate value of this 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 sheet 12, turns off the semiconductor refrigeration sheet 12, and stops the refrigeration and cooling operation; when the temperature sensor 7 detects that the working temperature inside the gravimeter housing 1 is less than the lowest value of this temperature range, the heating mechanism of the temperature controller is triggered. 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 to increase the working temperature. When the working temperature is increased to the intermediate value of this 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 temperature-raising operation. In this way, the constant control of the working temperature of the gravimeter can be realized by repeating the process.

[0040] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0041] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0042] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope 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 part 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 installed 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 installed on the track ring (14), an L-shaped sliding rod (301) is welded to the bottom of the rotating ring (3), and the arc-shaped sliding shaft (5) is slidably penetrated and matched 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), and an arc-shaped bevel gear rack (602) is welded to the top side of the tail end part of the L-shaped driving rod (6); an arc-shaped guide shaft (11) is welded between the bottom end parts of the two mutually separated vertical support shafts (101), and the horizontal rod section of the L-shaped sliding rod (301) is slidably matched 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 installed in the middle part of the U-shaped positioning frame (302), a threaded positioning shaft (304) is penetrated and installed on the bevel gear (303) in a form of being screwed, and the tail end part of the threaded positioning shaft (304) penetrates through the peripheral 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), and the two long side rods of the U-shaped limiting frame (305) are slidably penetrated and matched with the long side rods of the U-shaped positioning frame (302).

2. The 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 for 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 (6) is of 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).

4. The constant temperature control device of a relative gravimeter according to claim 1, characterized in that, A stop 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 stop disc (502) and the vertical part of the L-shaped sliding rod (301); A stop 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), and the horizontal rod section of the L-shaped sliding rod (301) abuts against the stop ring (1101).

5. The constant temperature control device of a relative gravimeter according to claim 1, characterized in that A ring-shaped base (10) is welded to the bottom ends of the four vertical support shafts (101), a force-applying shaft (1001) is welded to the top end of the ring-shaped base (10), a finger-pushing shaft (601) is welded to the head end of the L-shaped driving rod (6), and the finger-pushing shaft (601) and the force-applying shaft (1001) are vertically supported and arranged at intervals.

6. The constant temperature control device of a relative gravimeter according to claim 1, characterized in that, A circulation 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 end and the air outlet end of the circulation fan (4). The circulation fan (4) is communicated with the internal space of the gravimeter housing (1) through the two corrugated hoses (402). An annular base (403) is fixedly connected to the bottom of the circumferential housing of the circulation fan (4).

7. The constant temperature control device of a relative gravimeter according to claim 1, characterized in that, Through holes for ropes (1012) are formed through the parts of the four vertical support shafts (101) above the swivel ring (3). Four steel wire ropes (2) are connected between the swivel ring (3) and the circulation fan (4), and the four steel wire ropes (2) respectively pass through the four through holes for ropes (1012).

8. The constant temperature control device of a relative gravimeter according to claim 6, characterized in that, Two rows of semiconductor refrigeration chips (12) are symmetrically fixed to the inner circumference of the gravimeter housing (1), and the semiconductor refrigeration chips (12) penetrate through the peripheral wall of the gravimeter housing (1). Four electric heating tubes (13) are symmetrically fixed to the positions on both sides of the two rows of semiconductor refrigeration chips (12) on the inner circumference of the gravimeter housing (1). An installation cylinder (8) is fixedly installed inside the gravimeter housing (1). An institution and electrical components for detecting gravity are arranged inside the installation cylinder (8), and a temperature sensor (7) is fixedly installed on the top cover plate of the installation cylinder (8). An electric control box (15) is fixedly installed on the top side of the top cover plate of the gravimeter housing (1). A temperature controller and control electrical appliances for implementing start-stop conversion of the electric heating tubes (13) and the semiconductor refrigeration chips (12) 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 appliances.

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