CN205280957U - Absolute gravimeter falling body whereabouts control system - Google Patents
Absolute gravimeter falling body whereabouts control system Download PDFInfo
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- CN205280957U CN205280957U CN201521042138.4U CN201521042138U CN205280957U CN 205280957 U CN205280957 U CN 205280957U CN 201521042138 U CN201521042138 U CN 201521042138U CN 205280957 U CN205280957 U CN 205280957U
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Abstract
The utility model provides an absolute gravimeter falling body whereabouts control system, including vacuum system and falling body control mechanism, vacuum system includes vacuum cylinder (1) and maintains vacuum pump (2) of vacuum cylinder (1) internal vacuum, falling body control mechanism includes rack and pinion drive unit (3), bracket (4) and leads spacing unit (5). The advantage does: through the spacing unit of installation falling body direction, can guarantee effectively that the falling body carries out the elevating movement of vertical direction, through adopting AC motor and rack and pinion drive unit, can improve the interference signal quality that signal acquisition system gathered to gravity appearance measurement accuracy is moved extremely in comprehensive improvement, advantage such as have still that drive mechanism is simple, occupation space is little and with low costs.
Description
Technical field
The utility model belongs to absolute gravimeter studying technological domain, is specifically related to a kind of absolute gravimeter falling bodies whereabouts Controlling System.
Background technology
Absolute gravimeter is the instrument measuring absolute gravity field and change thereof, and along with the importance of gravimetry at civilian installation and military aspect promotes gradually, the design and production of absolute gravimeter is also subject to more and more higher attention.
At present, absolute gravimeter more ripe in the world is free fall type absolute gravimeter, mainly comprise laser interference system, vacuum freely falling body Controlling System, signal acquiring system and data handling system, its principle is: signal acquiring system collection comprises falling bodies in the vacuum chamber relative to the interference signal with reference to prism location change information, by being analyzed by interference signal, obtain the falling bodies displacement of free-falling and the time in the vacuum chamber.
For the vacuum freely falling body Controlling System in free fall type absolute gravimeter, traditional scheme is: at vacuum chamber outer setting direct-current machine, direct-current machine is linked for placing the bracket of falling bodies by steel belt driving mechanism and vacuum chamber, when direct-current machine twirl, bracket is moved downward with the speed slightly larger than universal gravity constant, now, falling bodies are separated with bracket, thus realize the free-falling campaign of falling bodies.
The main problem that such scheme exists is: owing to the electric current in direct-current machine coil is generally square wave, so can to power-supply system re P control in operational process, the noise produced can have influence on the signal to noise ratio of the interference signal that signal acquiring system collects, thus reduces dynamic absolutely gravity meter measuring accuracy; In addition, when adopting steel belt driving mechanism, there is transmission rig complexity, the big and high deficiency of cost that takies space, it is unfavorable for moving absolutely promoting the use of of gravity meter.
Practical novel content
For the defect that prior art exists, the utility model provides a kind of absolute gravimeter falling bodies whereabouts Controlling System, can effectively solve the problem.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of absolute gravimeter falling bodies whereabouts Controlling System, comprises vacuum system and falling bodies controlling organization;
Described vacuum system comprises vacuum cylinder (1) and maintains the vacuum pump (2) of described vacuum cylinder (1) inner vacuum degree; Described falling bodies controlling organization comprises rack-and-pinion gear unit (3), bracket (4) and guide and limit unit (5);
Wherein, described rack-and-pinion gear unit (3) comprising: alternating current machine (3.1), the 1st gear (3.2), the 2nd gear (3.3), rotating shaft (3.4), the 3rd gear (3.5) and tooth bar (3.6); Described alternating current machine (3.1) is arranged at the outside of described vacuum cylinder (1), described 1st gear (3.2) of moment output shaft (3.1.1) the sheathed fixed installation of described alternating current machine (3.1); Described rotating shaft (3.4) setting parallel with described moment output shaft (3.1.1), and, described 2nd gear (3.3) that the sheathed fixed installation in one end of described rotating shaft (3.4) is engaged with described 1st gear (3.2), vacuum cylinder (1) described in the other end hermetically passing of described rotating shaft (3.4) and extend into the inside of described vacuum cylinder (1), be positioned at inner described 3rd gear (3.5) of the sheathed fixed installation in one end of described vacuum cylinder (1) in described rotating shaft (3.4); When described alternating current machine (3.1) drives described 1st gear (3.2) to rotate, driving described 2nd gear (3.3) to rotate, described 2nd gear (3.3) drives described 3rd gear (3.5) to rotate by described rotating shaft (3.4);
Described tooth bar (3.6) is vertically arranged, its top is positioned at the outside of described vacuum cylinder (1), its bottom seals, through the barrel of described vacuum cylinder (1), the inside extending into described vacuum cylinder (1), and, described tooth bar (3.6) engages with described 3rd gear (3.5), described bracket (4) is fixedly mounted when described 3rd gear (3.5) rotates in the bottom of described tooth bar (3.6), driving described tooth bar (3.6) to carry out vertical direction up-and-down movement, the described bracket of final driving (4) carries out synchronization lifting motion;
Described guide and limit unit (5) comprises left guide and limit module (5.1), right guide and limit module (5.2) and guiding axle and installs framework (5.3); Described left guide and limit module (5.1) comprises left guiding axle (5.1.1) and left guide pin bushing (5.1.2); Described right guide and limit module (5.2) comprises right guiding axle (5.2.1) and right guide pin bushing (5.2.2); Described guiding axle installs the inside that framework (5.3) is fixed on described vacuum cylinder (1), described left guiding axle (5.1.1) and described right guiding axle (5.2.1) are all vertically installed in described guiding axle and install on framework (5.3), further, described left guiding axle (5.1.1) and described right guiding axle (5.2.1) are symmetricly set in the left and right sides of described bracket (4); Described left guide pin bushing (5.1.2) is sheathed on described left guiding axle (5.1.1), can be free to slide along described left guiding axle (5.1.1), described right guide pin bushing (5.2.2) is sheathed on described right guiding axle (5.2.1), can be free to slide along described right guiding axle (5.2.1); In addition, the left and right sides of described bracket (4) is fixedly connected with described right guide pin bushing (5.2.2) with described left guide pin bushing (5.1.2) respectively, when described bracket (4) is carried out vertical direction up-and-down movement by described tooth bar (3.6) driving, described left guide pin bushing (5.1.2) and described right guide pin bushing (5.2.2) are respectively along described left guiding axle (5.1.1) and described right guiding axle (5.2.1) synchronous slide.
Preferably, described vacuum pump (2) is ionic pump.
Preferably, the gear ratio of described 1st gear (3.2) and described 2nd gear (3.3) is 1:2; The gear ratio of described 3rd gear (3.5) and described 2nd gear (3.3) is 3:8.
Preferably, described 1st gear (3.2) is spurn wheel, and material is steel; Described 2nd gear (3.3) is spurn wheel, and material is rigid plastics; Described 3rd gear (3.5) is twisted spur gear.
Preferably, described tooth bar (3.6) is helical rack.
Preferably, described left guide and limit module (5.1) also comprises left guiding axle upper bracket (5.1.3) and left guiding axle lower bracket (5.1.4); Described left guiding axle upper bracket (5.1.3) and described left guiding axle lower bracket (5.1.4) are separately fixed at top ends and the bottom of described left guiding axle (5.1.1), described left guiding axle upper bracket (5.1.3) is fixed to the top board that described guiding axle installs framework (5.3) again, and described left guiding axle lower bracket (5.1.4) is fixed to the base plate that described guiding axle installs framework (5.3) again;
Described right guide and limit module (5.2) also comprises right guiding axle upper bracket (5.2.3) and right guiding axle lower bracket (5.2.4); Described right guiding axle upper bracket (5.2.3) and described right guiding axle lower bracket (5.2.4) are separately fixed at top ends and the bottom of described right guiding axle (5.2.1), described right guiding axle upper bracket (5.2.3) is fixed to the top board that described guiding axle installs framework (5.3) again, and described right guiding axle lower bracket (5.2.4) is fixed to the base plate that described guiding axle installs framework (5.3) again.
Preferably, described rotating shaft (3.4) is made up of three-stage structure, and what be respectively gear shaft (3.4.1), shaft coupling (3.4.2) and magnetic fluid seal crosses vacuum transmission axle (3.4.3), wherein, the vacuum transmission axle (3.4.3) excessively of described magnetic fluid seal is positioned at the outside of described vacuum cylinder (1), sheathed fixing described 2nd gear (3.3) in its one end, its the other end is connected with the one end of described shaft coupling (3.4.2), the outer cover crossing vacuum transmission axle (3.4.3) of described magnetic fluid seal is provided with magnetic fluid seal (3.9), vacuum cylinder (1) described in the other end hermetically passing of described shaft coupling (3.4.2) and extend into the inside of described vacuum cylinder (1), and, the other end of described shaft coupling (3.4.2) is fixedly connected with described gear shaft (3.4.1), described 3rd gear (3.5) of the outside sheathed fixed installation of described gear shaft (3.4.1).
Preferably, also comprise tooth bar motion and lead seat (3.7) and gear shaft support (3.8); Seat (3.7) is led in the motion of described tooth bar and described gear shaft support (3.8) is all fixedly installed on the top board of described guiding axle installation framework (5.3), and, described tooth bar (3.6) leads seat (3.7) through the motion of described tooth bar, and described 3rd gear (3.5) is fixed on described gear shaft support (3.8).
Preferably, bracing frame (6) is also comprised; Support frame as described above (6) is installed on the lower section of described vacuum cylinder (1), for supporting fixing described vacuum cylinder (1).
The absolute gravimeter falling bodies whereabouts Controlling System that the utility model provides has the following advantages:
The absolute gravimeter falling bodies whereabouts Controlling System that the utility model provides, has the following advantages:
(1) by installing falling bodies guide and limit unit, it is possible to effectively ensure that falling bodies carry out the up-and-down movement of vertical direction;
(2) by adopting alternating current machine and rack-and-pinion gear unit, it is possible to improve the interference signal quality that signal acquiring system collects, thus improve dynamic absolutely gravity meter measuring accuracy comprehensively;
(3) also have that transmission rig is simple, the little and low cost and other advantages that takies space.
Accompanying drawing explanation
The outside structural representation of the absolute gravimeter falling bodies whereabouts Controlling System that Fig. 1 provides for the utility model;
The structural representation of the rack-and-pinion gear unit that Fig. 2 provides for the utility model;
Structural representation under the guide and limit unit that Fig. 3 provides for the utility model and rack-and-pinion assembled state;
The structural representation of the guide and limit unit that Fig. 4 provides for the utility model.
Embodiment
Technical problem, technical scheme and useful effect in order to make the utility model solve clearly are understood, below in conjunction with drawings and Examples, are further elaborated by the utility model. It is to be understood that specific embodiment described herein is only in order to explain the utility model, and it is not used in restriction the utility model.
Composition graphs 1, the utility model provides a kind of absolute gravimeter falling bodies whereabouts Controlling System, and as shown in Figure 1, the outside structural representation of absolute gravimeter falling bodies whereabouts Controlling System, comprises vacuum system and falling bodies controlling organization.
Vacuum system comprises vacuum cylinder 1 and maintains the vacuum pump 2 of vacuum cylinder 1 inner vacuum degree, and in practical application, vacuum pump 2 can adopt ionic pump, and to the requirement of vacuum tightness when realizing falling bodies free-falling by ionic pump, under normal circumstances, vacuum tightness is higher than 4 �� 10-4Pa��
Falling bodies controlling organization comprises rack-and-pinion gear unit 3, bracket 4 and guide and limit unit 5; Wherein, bracket is the device for placing falling bodies, and rack-and-pinion gear unit accelerates decline for driven bracket, thus realizes the driving unit of falling bodies free-falling, and guide and limit unit is used for ensureing that bracket carries out vertical direction whereabouts. Below to rack-and-pinion gear unit and guide and limit unit detail respectively:
(1) rack-and-pinion gear unit
As shown in Figure 2, it is the structural representation of rack-and-pinion gear unit; Rack-and-pinion gear unit 3 comprises: alternating current machine 3.1, the 1st gear 3.2, the 2nd gear 3.3, rotating shaft 3.4, the 3rd gear 3.5 and tooth bar 3.6; Alternating current machine 3.1 is arranged at the outside of vacuum cylinder 1, the moment sheathed fixed installation of output shaft 3.1.1 the 1st gear 3.2 of alternating current machine 3.1; Rotating shaft 3.4 setting parallel with moment output shaft 3.1.1, and, the 2nd gear 3.3 that the sheathed fixed installation in one end of rotating shaft 3.4 is engaged with the 1st gear 3.2, the other end hermetically passing vacuum cylinder 1 of rotating shaft 3.4 and extend into the inside of vacuum cylinder 1, be positioned at the sheathed fixed installation in one end the 3rd gear 3.5 of vacuum cylinder 1 inside in rotating shaft 3.4; When alternating current machine 3.1 drives the 1st gear 3.2 to rotate, driving the 2nd gear 3.3 to rotate, the 2nd gear 3.3 drives the 3rd gear 3.5 to rotate by rotating shaft 3.4;
Tooth bar 3.6 is vertically arranged, its top is positioned at the outside of vacuum cylinder 1, its bottom seals, through the barrel of vacuum cylinder 1, the inside extending into vacuum cylinder 1, and, tooth bar 3.6 engages with the 3rd gear 3.5, fixedly mounts bracket 4 in the bottom of tooth bar 3.6, when the 3rd gear 3.5 rotates, driving tooth bar 3.6 to carry out vertical direction up-and-down movement, final driven bracket 4 carries out synchronization lifting motion.
On above-mentioned basis, also can carry out following improvement:
Improve 1:
In the present invention, by the engagement of the 3rd gear 3.5 and tooth bar 3.6, it is achieved to the control of bracket rising and falling motion, in practical application, the 3rd gear preferably adopts twisted spur gear, and tooth bar adopts helical rack, twisted spur gear and helical rack engagement, can increase the stationarity of overall system cloud gray model.
Improve 2:
Each gear ratio can be: the 1st gear 3.2 and the 2nd gear 3.3 form decelerating through motor system, and its gear ratio is preferably 1:2; The gear ratio of the 3rd gear 3.5 and the 2nd gear 3.3 is 3:8. In addition, the 1st gear 3.2 adopts spurn wheel, and material is steel; 2nd gear 3.3 adopts spurn wheel, and material is rigid plastics, can reduce whole operational noise of system.
Improve 3:
In practical application, rotating shaft 3.4 is made up of three-stage structure, is respectively the vacuum transmission axle 3.4.3 excessively of gear shaft 3.4.1, shaft coupling 3.4.2 and magnetic fluid seal; Wherein, the vacuum transmission axle 3.4.3 excessively of magnetic fluid seal is positioned at the outside of vacuum cylinder 1, its one end is sheathed fixes the 2nd gear 3.3, its the other end is connected with one end of shaft coupling 3.4.2, the outer cover crossing vacuum transmission axle 3.4.3 of magnetic fluid seal is provided with magnetic fluid seal 3.9, the other end hermetically passing vacuum cylinder 1 of shaft coupling 3.4.2 and extend into the inside of vacuum cylinder 1, and, the other end of shaft coupling 3.4.2 is fixedly connected with gear shaft 3.4.1, outside sheathed fixed installation the 3rd gear 3.5 of gear shaft 3.4.1.
By installing magnetic fluid seal, it may be achieved to the sealing of whole vacuum cavity, crossing of magnetic fluid seal is rigidly connected by shaft coupling between vacuum transmission axle and gear shaft, can increase the stability of transmission system.
In addition, it is noted that the vacuum transmission axle excessively of the moment output shaft of motor and magnetic fluid seal, in assembling process, need to meet the precise hard_drawn tuhes of parallelism and distance, just can realize the precise hard_drawn tuhes to falling bodies distance of fall.
Improve 4:
Also comprise tooth bar motion and lead seat 3.7 and gear shaft support 3.8; Seat 3.7 is led in tooth bar motion and gear shaft support 3.8 is all fixedly installed on the top board of guiding axle installation framework 5.3, and, tooth bar 3.6 leads seat 3.7 through tooth bar motion, and the 3rd gear 3.5 is fixed on gear shaft support 3.8.
Leading seat by installing tooth bar motion, tooth bar can be made when carrying out up-and-down movement to be subject to tooth bar motion and lead the restriction of seat, tooth bar only can be in vertical motion along the direction being parallel to guiding axle, the motion in other directions is all controlled.
By installing gear shaft support, can ensureing that the 3rd gear is merely able to carry out circumference rotation, the motion in other directions is all restricted.
During practical set, by the adjustment installing position between seat and gear shaft support is led in tooth bar motion, can ensure that twisted spur gear and helical rack closely engage and free movement, the rising of final control bracket and whereabouts.
(2) guide and limit unit
With reference to figure 3, it it is the structural representation under guide and limit unit and rack-and-pinion assembled state; With reference to figure 4, it it is the structural representation of guide and limit unit.
Guide and limit unit 5 comprises left guide and limit module 5.1, right guide and limit module 5.2 and guiding axle and installs framework 5.3; Left guide and limit module 5.1 comprises left guiding axle 5.1.1 and left guide pin bushing 5.1.2; Right guide and limit module 5.2 comprises right guiding axle 5.2.1 and right guide pin bushing 5.2.2; Guiding axle installs the inside that framework 5.3 is fixed on vacuum cylinder 1, and left guiding axle 5.1.1 and right guiding axle 5.2.1 is all vertically installed in guiding axle and installs on framework 5.3, and, left guiding axle 5.1.1 and right guiding axle 5.2.1 is symmetricly set in the left and right sides of bracket 4; Left guide pin bushing 5.1.2 is sheathed on left guiding axle 5.1.1, can be free to slide along left guiding axle 5.1.1, and right guide pin bushing 5.2.2 is sheathed on right guiding axle 5.2.1, can be free to slide along right guiding axle 5.2.1; In addition, the left and right sides of bracket 4 is fixedly connected with right guide pin bushing 5.2.2 with left guide pin bushing 5.1.2 respectively, when bracket 4 is carried out vertical direction up-and-down movement by tooth bar 3.6 driving, left guide pin bushing 5.1.2 and right guide pin bushing 5.2.2 is respectively along left guiding axle 5.1.1 and right guiding axle 5.2.1 synchronous slide.
By installing left guide and limit module and right guide and limit module, it may be achieved bracket only can be in vertical motion along being parallel to guiding direction of principal axis, and the motion in other directions is all controlled.
In addition, in practical application, left guide and limit module 5.1 also comprises left guiding axle upper bracket 5.1.3 and left guiding axle lower bracket 5.1.4; Left guiding axle upper bracket 5.1.3 and left guiding axle lower bracket 5.1.4 is separately fixed at top ends and the bottom of left guiding axle 5.1.1, left guiding axle upper bracket 5.1.3 is fixed to the top board that guiding axle installs framework 5.3 again, and left guiding axle lower bracket 5.1.4 is fixed to the base plate that guiding axle installs framework 5.3 again;
Right guide and limit module 5.2 also comprises right guiding axle upper bracket 5.2.3 and right guiding axle lower bracket 5.2.4; Right guiding axle upper bracket 5.2.3 and right guiding axle lower bracket 5.2.4 is separately fixed at top ends and the bottom of right guiding axle 5.2.1, right guiding axle upper bracket 5.2.3 is fixed to the top board that guiding axle installs framework 5.3 again, and right guiding axle lower bracket 5.2.4 is fixed to the base plate that guiding axle installs framework 5.3 again.
Also comprise bracing frame 6; Bracing frame 6 is installed on the lower section of vacuum cylinder 1, for supporting fixing vacuum cylinder 1. With reference to figure 1, bracing frame adopts three support legs to support the mechanism of a smooth plate, and every bar supports leg can carry out lift adjustment in the vertical direction, thus ensures the horizontal property of smooth plate, the final perpendicularity requirement ensureing guiding axle.
The absolute gravimeter falling bodies whereabouts Controlling System that the utility model provides, has the following advantages:
(1) by installing falling bodies guide and limit unit, it is possible to effectively ensure that falling bodies carry out the up-and-down movement of vertical direction;
(2) by adopting alternating current machine and rack-and-pinion gear unit, it is possible to improve the interference signal quality that signal acquiring system collects, thus improve dynamic absolutely gravity meter measuring accuracy comprehensively;
(3) also have that transmission rig is simple, the little and low cost and other advantages that takies space.
The above is only preferred implementation of the present utility model; it is noted that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also making some improvements and modifications, these improvements and modifications also should look protection domain of the present utility model.
Claims (9)
1. an absolute gravimeter falling bodies whereabouts Controlling System, it is characterised in that, comprise vacuum system and falling bodies controlling organization;
Described vacuum system comprises vacuum cylinder (1) and maintains the vacuum pump (2) of described vacuum cylinder (1) inner vacuum degree; Described falling bodies controlling organization comprises rack-and-pinion gear unit (3), bracket (4) and guide and limit unit (5);
Wherein, described rack-and-pinion gear unit (3) comprising: alternating current machine (3.1), the 1st gear (3.2), the 2nd gear (3.3), rotating shaft (3.4), the 3rd gear (3.5) and tooth bar (3.6); Described alternating current machine (3.1) is arranged at the outside of described vacuum cylinder (1), described 1st gear (3.2) of moment output shaft (3.1.1) the sheathed fixed installation of described alternating current machine (3.1); Described rotating shaft (3.4) setting parallel with described moment output shaft (3.1.1), and, described 2nd gear (3.3) that the sheathed fixed installation in one end of described rotating shaft (3.4) is engaged with described 1st gear (3.2), vacuum cylinder (1) described in the other end hermetically passing of described rotating shaft (3.4) and extend into the inside of described vacuum cylinder (1), be positioned at inner described 3rd gear (3.5) of the sheathed fixed installation in one end of described vacuum cylinder (1) in described rotating shaft (3.4); When described alternating current machine (3.1) drives described 1st gear (3.2) to rotate, driving described 2nd gear (3.3) to rotate, described 2nd gear (3.3) drives described 3rd gear (3.5) to rotate by described rotating shaft (3.4);
Described tooth bar (3.6) is vertically arranged, its top is positioned at the outside of described vacuum cylinder (1), its bottom seals, through the barrel of described vacuum cylinder (1), the inside extending into described vacuum cylinder (1), and, described tooth bar (3.6) engages with described 3rd gear (3.5), described bracket (4) is fixedly mounted when described 3rd gear (3.5) rotates in the bottom of described tooth bar (3.6), driving described tooth bar (3.6) to carry out vertical direction up-and-down movement, the described bracket of final driving (4) carries out synchronization lifting motion;
Described guide and limit unit (5) comprises left guide and limit module (5.1), right guide and limit module (5.2) and guiding axle and installs framework (5.3); Described left guide and limit module (5.1) comprises left guiding axle (5.1.1) and left guide pin bushing (5.1.2); Described right guide and limit module (5.2) comprises right guiding axle (5.2.1) and right guide pin bushing (5.2.2); Described guiding axle installs the inside that framework (5.3) is fixed on described vacuum cylinder (1), described left guiding axle (5.1.1) and described right guiding axle (5.2.1) are all vertically installed in described guiding axle and install on framework (5.3), further, described left guiding axle (5.1.1) and described right guiding axle (5.2.1) are symmetricly set in the left and right sides of described bracket (4); Described left guide pin bushing (5.1.2) is sheathed on described left guiding axle (5.1.1), can be free to slide along described left guiding axle (5.1.1), described right guide pin bushing (5.2.2) is sheathed on described right guiding axle (5.2.1), can be free to slide along described right guiding axle (5.2.1); In addition, the left and right sides of described bracket (4) is fixedly connected with described right guide pin bushing (5.2.2) with described left guide pin bushing (5.1.2) respectively, when described bracket (4) is carried out vertical direction up-and-down movement by described tooth bar (3.6) driving, described left guide pin bushing (5.1.2) and described right guide pin bushing (5.2.2) are respectively along described left guiding axle (5.1.1) and described right guiding axle (5.2.1) synchronous slide.
2. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterised in that, described vacuum pump (2) is ionic pump.
3. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterised in that, the gear ratio of described 1st gear (3.2) and described 2nd gear (3.3) is 1:2; The gear ratio of described 3rd gear (3.5) and described 2nd gear (3.3) is 3:8.
4. absolute gravimeter falling bodies whereabouts according to claim 3 Controlling System, it is characterised in that, described 1st gear (3.2) is spurn wheel, and material is steel; Described 2nd gear (3.3) is spurn wheel, and material is rigid plastics; Described 3rd gear (3.5) is twisted spur gear.
5. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterised in that, described tooth bar (3.6) is helical rack.
6. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterized in that, described left guide and limit module (5.1) also comprises left guiding axle upper bracket (5.1.3) and left guiding axle lower bracket (5.1.4); Described left guiding axle upper bracket (5.1.3) and described left guiding axle lower bracket (5.1.4) are separately fixed at top ends and the bottom of described left guiding axle (5.1.1), described left guiding axle upper bracket (5.1.3) is fixed to the top board that described guiding axle installs framework (5.3) again, and described left guiding axle lower bracket (5.1.4) is fixed to the base plate that described guiding axle installs framework (5.3) again;
Described right guide and limit module (5.2) also comprises right guiding axle upper bracket (5.2.3) and right guiding axle lower bracket (5.2.4); Described right guiding axle upper bracket (5.2.3) and described right guiding axle lower bracket (5.2.4) are separately fixed at top ends and the bottom of described right guiding axle (5.2.1), described right guiding axle upper bracket (5.2.3) is fixed to the top board that described guiding axle installs framework (5.3) again, and described right guiding axle lower bracket (5.2.4) is fixed to the base plate that described guiding axle installs framework (5.3) again.
7. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterized in that, described rotating shaft (3.4) is made up of three-stage structure, and what be respectively gear shaft (3.4.1), shaft coupling (3.4.2) and magnetic fluid seal crosses vacuum transmission axle (3.4.3), wherein, the vacuum transmission axle (3.4.3) excessively of described magnetic fluid seal is positioned at the outside of described vacuum cylinder (1), sheathed fixing described 2nd gear (3.3) in its one end, its the other end is connected with the one end of described shaft coupling (3.4.2), the outer cover crossing vacuum transmission axle (3.4.3) of described magnetic fluid seal is provided with magnetic fluid seal (3.9), vacuum cylinder (1) described in the other end hermetically passing of described shaft coupling (3.4.2) and extend into the inside of described vacuum cylinder (1), and, the other end of described shaft coupling (3.4.2) is fixedly connected with described gear shaft (3.4.1), described 3rd gear (3.5) of the outside sheathed fixed installation of described gear shaft (3.4.1).
8. absolute gravimeter falling bodies whereabouts according to claim 7 Controlling System, it is characterised in that, also comprise tooth bar motion and lead seat (3.7) and gear shaft support (3.8); Seat (3.7) is led in the motion of described tooth bar and described gear shaft support (3.8) is all fixedly installed on the top board of described guiding axle installation framework (5.3), and, described tooth bar (3.6) leads seat (3.7) through the motion of described tooth bar, and described 3rd gear (3.5) is fixed on described gear shaft support (3.8).
9. absolute gravimeter falling bodies whereabouts according to claim 1 Controlling System, it is characterised in that, also comprise bracing frame (6); Support frame as described above (6) is installed on the lower section of described vacuum cylinder (1), for supporting fixing described vacuum cylinder (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042138.4U CN205280957U (en) | 2015-12-15 | 2015-12-15 | Absolute gravimeter falling body whereabouts control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042138.4U CN205280957U (en) | 2015-12-15 | 2015-12-15 | Absolute gravimeter falling body whereabouts control system |
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| CN205280957U true CN205280957U (en) | 2016-06-01 |
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| CN201521042138.4U Expired - Fee Related CN205280957U (en) | 2015-12-15 | 2015-12-15 | Absolute gravimeter falling body whereabouts control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061758A (en) * | 2018-07-31 | 2018-12-21 | 湖北省地震局 | Steel band offset falling bodies central drive mechanism for absolute gravimeter |
| CN111708096A (en) * | 2020-06-05 | 2020-09-25 | 清华大学 | Balanced falling mechanism and gravimeter |
-
2015
- 2015-12-15 CN CN201521042138.4U patent/CN205280957U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061758A (en) * | 2018-07-31 | 2018-12-21 | 湖北省地震局 | Steel band offset falling bodies central drive mechanism for absolute gravimeter |
| CN109061758B (en) * | 2018-07-31 | 2023-08-18 | 湖北省地震局 | Steel belt offset falling body center driving mechanism for absolute gravimeter |
| CN111708096A (en) * | 2020-06-05 | 2020-09-25 | 清华大学 | Balanced falling mechanism and gravimeter |
| CN111708096B (en) * | 2020-06-05 | 2021-04-02 | 清华大学 | Balanced falling mechanism and gravimeter |
| WO2021244426A1 (en) * | 2020-06-05 | 2021-12-09 | 清华大学 | Balanced falling mechanism and gravimeter |
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