CN219774684U - Monitoring device - Google Patents

Abstract

The utility model discloses a monitoring device, comprising: monitoring equipment; a cradle head base assembly; the vibration reduction mechanism comprises a vibration reduction shell, a first vibration reduction assembly and a second vibration reduction assembly, wherein the vibration reduction shell is provided with a containing cavity, the first vibration reduction assembly comprises a diaphragm, the diaphragm divides the containing cavity into a first containing cavity and a second containing cavity, the first containing cavity is filled with gas, and the second containing cavity is filled with magnetorheological liquid; the second vibration reduction assembly comprises a movable piece and a piston rod arranged at one end of the movable piece, the movable piece is provided with a diversion opening, the other end of the piston rod is detachably connected with the holder base assembly, and the movable piece can be electrified and is used for adjusting the magnetorheological liquid to enter the diversion opening for damping. The monitoring device can reduce vibration and well adaptively adjust the damping force of vibration reduction.

Description

Monitoring device

Technical Field

The utility model relates to the field of security equipment, in particular to a monitoring device.

Background

The monitoring device needs to operate in a stable environment to ensure the quality of monitoring. The conventional holder monitoring device generally dampens vibration through common damping structures such as rubber pads and springs, but the rubber pads are easy to age, the damping capacity of the rubber pads can be greatly reduced along with the long-term use time, the springs can be tired under long-term high-frequency vibration, failure risks are caused, the reliability is lower, the rubber pads and the springs can only slow down monoaxial vibration, self-adaptive adjustment is impossible, the application occasion is limited, and the damping structure has the technical problem of poor self-adaptive adjustment damping capacity.

Disclosure of Invention

The utility model provides a monitoring device, which aims to solve the technical problem that the monitoring device has poor capability of adaptively adjusting vibration reduction damping force through rubber pads, springs and other structures.

In order to solve the above technical problems, the present utility model provides a monitoring device, including: monitoring equipment; a cradle head base assembly; the vibration reduction mechanism comprises a vibration reduction shell, a first vibration reduction assembly and a second vibration reduction assembly, wherein the vibration reduction shell is provided with a containing cavity, the first vibration reduction assembly comprises a diaphragm, the diaphragm divides the containing cavity into a first containing cavity and a second containing cavity, the first containing cavity is filled with gas, and the second containing cavity is filled with magnetorheological liquid; the second vibration reduction assembly comprises a movable piece and a piston rod arranged at one end of the movable piece, the movable piece is provided with a diversion opening, the other end of the piston rod is detachably connected with the holder base assembly, and the movable piece can be electrified and is used for adjusting the magnetorheological liquid to enter the diversion opening for damping.

The diaphragm comprises a diaphragm body and two bending parts arranged on two sides of the diaphragm body, the bending parts comprise a first bending part and a second bending part, the first bending part is connected to the side wall of the first accommodating cavity, the second bending part is connected to the bottom of the first accommodating cavity, and the diaphragm body, the two bending parts and the vibration reduction shell enclose to form the first accommodating cavity.

Wherein, be provided with first sealing member between the lateral wall of first bending portion and first accommodation chamber.

The vibration damping shell comprises a first vibration damping shell and a second vibration damping shell which is covered on the first vibration damping shell, and a second sealing piece is arranged between the second vibration damping shell and the first vibration damping shell.

The second vibration reduction shell is provided with a bearing and a third sealing piece, and the piston rod penetrates through the second vibration reduction shell, the bearing and the third sealing piece.

Wherein, the movable part includes: the piston shell is provided with an inner cavity, openings are formed in two sides perpendicular to the movement direction of the piston rod, and the piston shell is attached to the inner side wall of the second accommodating cavity; the coil bracket is arranged in the inner cavity; the coil is arranged on one side surface of the coil bracket, which is away from the piston rod, in a surrounding manner; the magnetic induction core body is arranged on one side surface of the coil bracket, facing the piston rod, and is sleeved and detachably connected with the piston rod; the first pressing block is sleeved on the piston rod, is positioned at an opening of the piston shell and can be detached from one end of the piston shell far away from the first vibration reduction assembly; the second pressing block is sleeved on the piston rod, is positioned at the other opening of the piston shell and is detachably arranged at one end of the piston shell, which is close to the first vibration reduction assembly; and a guide port is formed among the piston shell, the inductance core body, the coil bracket and the coil.

The piston rod is detachably connected to the movable piece and forms a seal at the joint, a first through hole is formed in the piston rod in a penetrating mode, and the circuit is electrically connected with the movable piece through the first through hole.

The vibration reduction mechanism comprises a vibration reduction shell and an elastic piece, wherein the vibration reduction shell is provided with a containing cavity, the vibration reduction shell is arranged in the containing cavity, one end of the elastic piece is arranged at one end, far away from the holder base assembly, of the vibration reduction shell, and the other end of the elastic piece is arranged at the bottom of the containing cavity.

The cradle head base assembly comprises a cradle head base lower shell, one of one end, close to the vibration reduction mechanism, of the cradle head base lower shell and one end, facing the cradle head base assembly, of the vibration reduction shell is provided with a protruding portion, the other end, close to one end, of the vibration reduction mechanism, of the cradle head base lower shell and one end, facing the cradle head base assembly, of the vibration reduction shell is provided with a concave groove, the extending direction of the protruding portion is the same as the moving direction of the piston rod, and the protruding portion can be inserted into the concave groove.

The monitoring device further comprises a cradle head movement assembly, one end of the cradle head movement assembly is connected with the monitoring equipment in a gear transmission mode, and the other end of the cradle head movement assembly is connected with the cradle head base assembly in a gear transmission mode.

The beneficial effects of the utility model are as follows: different from the prior art, the utility model provides a monitoring device which comprises monitoring equipment, a holder base assembly and a vibration reduction mechanism. The vibration damping mechanism comprises a vibration damping shell, a first vibration damping assembly and a second vibration damping assembly. The vibration damping shell is formed with a containing cavity. The first vibration reduction assembly includes a diaphragm. The diaphragm divides the accommodation chamber into a first accommodation chamber and a second accommodation chamber. The first accommodating cavity is filled with gas. The second accommodating cavity is filled with magnetorheological liquid. The second vibration reduction assembly comprises a movable piece and a piston rod arranged at one end of the movable piece. The movable piece is provided with a guide opening. The other end of the piston rod is detachably connected with the holder base assembly. The movable piece can be electrified and is used for adjusting the damping of the magnetorheological fluid entering the diversion opening. Through arranging the vibration reduction shell, the first vibration reduction assembly and the second vibration reduction assembly to be matched with each other, and then through enabling the movable piece to adjust the damping of the magnetorheological fluid entering the guide opening, the monitoring device can reduce vibration and well adaptively adjust the damping force of vibration reduction.

Drawings

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is an exploded schematic view of an embodiment of a monitoring device of the present utility model;

FIG. 2 is a first partial cross-sectional schematic view of an embodiment of the monitoring device of the present utility model;

FIG. 3 is a schematic view of three states of a vibration damping mechanism in one embodiment of the monitoring device of the present utility model;

FIG. 4 is a second partial cross-sectional schematic view of an embodiment of the monitoring device of the present utility model;

fig. 5 is a schematic structural view of an embodiment of the monitoring device of the present utility model.

Reference numerals: 10. a monitoring device; 1. monitoring equipment; 2. a cradle head base assembly; 21. a cradle head base lower shell; 3. a vibration damping mechanism; 31. a vibration damping housing; 311. a receiving chamber; 3111. a first accommodation chamber; 3112. a second accommodation chamber; 3113. magnetorheological fluid; 312. a diaphragmatic support; 3121. a third bending part; 3122. a fourth bending part; 313. a first vibration damping housing; 314. a second vibration damping housing; 3141. a bearing; 3142. a third seal; 32. a first vibration damping assembly; 321. a diaphragm; 3211. a diaphragm body; 3212. a bending part; 3212a, a first fold; 3212b, a second fold; 33. a second vibration damping assembly; 331. a movable member; 3311. a diversion port; 3312. a inductance core body; 3313. a coil support; 3314. a coil; 3315. a piston housing; 3315a, lumen; 3315b, openings; 3315c, guide belt; 3316. a first briquette; 3317. a second briquetting; 332. a piston rod; 3321. a first through hole; 34. a fourth seal; 35. a second seal; 36. a vibration damping housing; 361. a receiving chamber; 37. an elastic member; 4. a boss; 5. a concave groove; 6. and the cradle head movement assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The monitoring device provided by the utility model is described in detail below with reference to the embodiments.

Referring to fig. 1 to 3, fig. 1 is an exploded view of an embodiment of a monitoring device according to the present utility model; FIG. 2 is a first partial cross-sectional schematic view of an embodiment of the monitoring device of the present utility model; FIG. 3 is a schematic diagram of three states of a vibration damping mechanism in an embodiment of the monitoring device of the present utility model. The present utility model provides a monitoring device 10. The monitoring device 10 comprises a monitoring device 1, a holder base assembly 2 and a vibration reduction mechanism 3. The vibration damping mechanism 3 includes a vibration damping housing 31, a first vibration damping assembly 32, and a second vibration damping assembly 33. The first damper assembly 32 and the second damper assembly 33 are disposed within the damper housing 31. The damper housing 31 is formed with a receiving cavity 311. The first vibration damping assembly 32 includes a diaphragm 321, and the diaphragm 321 is an elastic material. The diaphragm 321 divides the accommodating chamber 311 into a first accommodating chamber 3111 and a second accommodating chamber 3112. The first receiving chamber 3111 is filled with gas. The second receiving chamber 3112 is filled with a magnetorheological fluid 3113. When the magnetorheological fluid 3113 in the second accommodating chamber 3112 changes, the diaphragm 321 is pressed, and the diaphragm 321 deforms, so that the shape of the first accommodating chamber 311 changes. The second vibration damping assembly 33 includes a movable member 331 and a piston rod 332 disposed at one end of the movable member 331. The movable member 331 is provided with a flow guiding port 3311. The conduction port 3311 is used for passing the magnetorheological fluid 3113 through the movable member 331. The other end of the piston rod 332 is detachably connected with the pan-tilt base assembly 2. The movable member 331 is energizable and is adapted to regulate the damping of the magnetorheological fluid 3113 entering the baffle opening 3311. When the piston rod 332 moves relative to the two sidewalls of the second accommodating cavity 3112, the piston rod 332 is disposed on the movable member 331, and the movable member 331 is driven by the piston rod 332 and moves in the same manner relative to the two sidewalls of the second accommodating cavity 3112.

Magnetorheological fluid 3113 is composed of a base fluid (not shown), magnetic particles (not shown), and a stabilizer (not shown). When the movable member 331 is energized, the movable member 331 generates a magnetic field. When the magnetorheological fluid 3113 is in the magnetic field, the magnetic particles are orderly arranged into a chain structure along the direction of magnetic force lines in the base fluid, and then are converted into a macroscopic columnar structure. The flow of the magnetorheological fluid 3113 is affected by the magnetic particles and is converted into a bingham fluid with increased viscosity and reduced fluidity. When the movable member 331 is not energized, the movable member 331 does not generate a magnetic field. When the magnetorheological fluid 3113 is not in the magnetic field, the magnetic particles are irregularly distributed in the base fluid, and the flow of the magnetorheological fluid 3113 is not affected by the magnetic particles. Magnetorheological fluid 3113 converts to a newtonian fluid with reduced viscosity and increased mobility. The relationship among the magnetorheological fluid 3113, the movable member 331 and the magnetorheological fluid 3113 is a routine choice for a person skilled in the art, and is not described in detail herein.

When the piston rod 332 drives the movable member 331 to move relative to the two sidewalls of the second accommodating chamber 3112, the magnetorheological fluid 3113 is extruded in the second accommodating chamber 3112 and passes through the diversion port 3311. When the magnetorheological fluid 3113 is converted to a bingham fluid, the damping force of the magnetorheological fluid 3113 increases, requiring a higher force to pass through the pilot port 3311. When the magnetorheological fluid 3113 is converted to a newtonian fluid, the damping force of the magnetorheological fluid 3113 is reduced and a lower force is required to pass through the pilot port 3311. When the monitoring device 10 is affected by different external forces, by controlling the currents of different magnitudes of the movable member 331, the magnetorheological fluid 3113 forms different damping forces, and further, the piston rod 332 drives the movable member 331 to move relative to two side walls of the second accommodating cavity 3112, so as to realize self-adaptive adjustment of the vibration damping force by the monitoring device 10.

In addition, as shown in fig. 3 c, when the piston rod 332 drives the movable member 331 to move relative to the two sidewalls of the second accommodating cavity 3112, the diaphragm 321 is elastically deformed by the pressure transmitted by the magnetorheological fluid 3113, so that the volume of the first accommodating cavity 3111 is changed, and the air pressure of the air in the first accommodating cavity 3111 is changed. As shown in fig. 3 b, when the piston rod 332 stops driving the movable member 331, the magnetorheological fluid 3113 receives the restoring force of the diaphragm 321 due to the elastic deformation, and simultaneously, superimposes the air pressure of the air in the first receiving chamber 3111. The movable member 331 is moved by the restoring force transmitted from the magnetorheological fluid 3113, and the movable member 331 is restored to the original state by combining with the action of gravity.

Through setting up damping shell 31, first damping subassembly 32 and second damping subassembly 33 mutually support, when vibration transmission to damping mechanism 3, second damping subassembly 33 produces the motion of relative damping shell 31, produces the magnetic field simultaneously and makes the damping force of magnetorheological fluid 3113 rise, offsets the energy of motion under the damping action of magnetorheological fluid 3113, then is pushed back by first damping subassembly 32 and resumes to initial state, can effective self-adaptation offset vibration impact, and then makes monitoring device 10 keep stable operating state.

The piston rod 332 and the pan/tilt head base assembly 2 may be connected by a snap connection, a screw connection, or the like, which is not limited herein. The gas may be air, nitrogen, or the like, and is not limited herein.

The number of the diversion openings 3311 may be one, two, three, etc., and is not limited herein. The number of the diversion openings is two in the embodiment.

Referring to fig. 4 to 5, fig. 4 is a second schematic partial cross-sectional view of an embodiment of the monitoring device according to the present utility model; fig. 5 is a schematic structural view of an embodiment of the monitoring device of the present utility model. Referring to fig. 2, in an embodiment, the diaphragm 321 includes a diaphragm body 3211 and two bending portions 3212 disposed on two sides of the diaphragm body 3211. The bent portion 3212 includes a first bent portion 3212a and a second bent portion 3212b. The first bending portion 3212a is connected to a side wall of the first receiving chamber 3111. The second bending portion 3212b is connected to a bottom of the first receiving chamber 3111. The diaphragm body 3211, the two bent portions 3212, and the damper housing 31 define a first accommodation chamber 3111. The sealing property of the first receiving cavity 3111 is increased by the first and second bending portions 3212a and 3212b being connected to the side wall and the bottom of the first receiving cavity 3111, respectively.

The diaphragm body 3211 has elasticity. When the volume of the gas in the first receiving chamber 3111 changes, the diaphragm body 3211 deforms, and the shape of the first receiving chamber 3111 changes.

The connection between the first bent portion 3212a and the side wall of the first receiving chamber 3111 may be an adhesive, a snap connection, an abutment connection, or the like, and is not limited herein. The connection between the second bent portion 3212b and the bottom of the first receiving chamber 3111 may be an adhesive, a snap connection, an abutment connection, or the like, and is not limited thereto.

In another embodiment, a diaphragm support 312 is disposed within the first receiving chamber 3111. Diaphragm support 312 includes a third bend 3121 and a fourth bend 3122. The third folded portion 3121 is attached to the first folded portion 3212a. The fourth folded portion 3122 is bonded to the second folded portion 3212b. The distances between the third and fourth bent portions 3121 and 3122 and the vibration reduction housing 31 are each smaller than the thickness of the diaphragm 321. The first bending portion 3212a is disposed between the third bending portion 3121 and a sidewall of the first accommodating cavity 3111 in an interference manner. The second bending portion 3212b is disposed between the fourth bending portion 3122 and the sidewall of the first accommodating cavity 3111 in an interference manner. By providing the diaphragm holder 312, the diaphragm 321 can be fixed and installed in a predetermined mounting shape by simply being inserted between the diaphragm holder 312 and the side wall of the first receiving chamber 3111 at the time of mounting, so that the diaphragm 321 can be mounted and fixed easily.

In one embodiment, a first seal (not shown) is disposed between the first fold portion 3212a and a sidewall of the first receiving chamber 3111. The first seal is fixed between the first fold 3212a and a sidewall of the first receiving chamber 3111. By providing the first sealing member between the first folded portion 3212a and the side wall of the first receiving chamber 3111, the sealing property of the first receiving chamber 3111 is improved. The first seal may be a rubber seal or the like.

In another embodiment, a fourth seal 34 is disposed between the first and third folds 3212a, 3121, and the fourth seal is interference-fixed between the first and third folds 3212a, 3121. By providing the fourth seal between the first folded portion 3212a and the third folded portion 3121, the sealability of the first receiving chamber 3111 is better. The fourth seal 34 may be a rubber seal or the like.

With continued reference to fig. 2, 4 and 5, in one embodiment, the damper housing 31 includes a first damper housing 313 and a second damper housing 314 covering the first damper housing 313. A second seal 35 is provided between second vibration damping housing 314 and first vibration damping housing 313. The second seal 35 is interference-fixed between the second vibration damping housing 314 and the first vibration damping housing 313. By providing the first vibration damping housing 313 and the second vibration damping housing 314, the vibration damping housing 31 can be opened or sealed easily, facilitating the assembly of the vibration damping mechanism 3. Meanwhile, by providing the second seal 35, the sealability of the accommodating chamber 311 is enhanced, so that the magnetorheological fluid 3113 cannot flow out of the accommodating chamber 311. The second seal 35 may be a rubber seal or the like.

In one embodiment, a bearing 3141 and a third seal 3142 are provided in a side of the second vibration damping housing 314 facing the receiving chamber 311. Piston rod 332 sequentially penetrates second vibration damping housing 314, bearing 3141, and third seal 3142. Third seal 3142 is secured within second damping shell 314 by interference for locking bearing 3141, preventing bearing 3141 from backing out, and also providing a seal. The third seal 3142 may be an oil seal or the like. By providing the bearing 3141 and the third seal 3142, the piston rod 332 can be rotated around the axis more smoothly, and the sealing of the second accommodating chamber 3112 is improved.

Under the combined action of the first sealing member or the fourth sealing member 34, the second sealing member 35 and the third sealing member 3142, the magnetorheological fluid 3113 is sealed in the second accommodating cavity 3112, so that the operation reliability of the vibration reduction mechanism 3 is improved, and further, the reliability of the monitoring device 10 in self-adaptive vibration reduction is ensured.

Referring back to fig. 2 and 4, in one embodiment, the movable member 331 includes a piston housing 3315, a coil support 3313, a coil 3314, a magnetically susceptible core 3312, a first press block 3316, and a second press block 3317. The piston housing 3315 is provided with an inner cavity 3315a and is formed with openings 3315b on both sides perpendicular to the direction of movement of the piston rod 332. The piston housing 3315 is attached to the inner side wall of the second receiving chamber 3112. The coil carrier 3313 is disposed within the interior cavity 3315 a. The coil 3314 is disposed around a side of the coil carrier 3313 facing away from the piston rod 332. The coil 3314 may be energized and produce a magnetic effect. The inductance core 3312 is disposed on a side of the coil carrier 3313 facing the piston rod 332. The inductance core 3312 is sleeved and detachably connected to the piston rod 332. The first pressing block 3316 is sleeved on the piston rod 332. The first press block 3316 is located at an opening 3315b of the piston housing 3315 and is removable from an end of the piston housing 3315 remote from the first vibration reduction assembly 32. The second pressing block 3317 is sleeved on the piston rod 332. The second press block is located at the other opening 3315b of the piston housing 3315 and is detachably attached to the end of the piston housing 3315 adjacent to the first vibration damping assembly 32. Wherein, a diversion port 3311 is formed between the piston housing 3315 and the inductance core 3312, the coil carrier 3313 and the coil 3314.

Wherein, when the magnetically susceptible core 3312 is not in the magnetic field, the magnetically susceptible core 3312 does not exhibit magnetism. When the magnetically susceptible core 3312 is in a magnetic field, the magnetically susceptible core 3312 is magnetized to form a magnetic field.

In addition, when the piston housing 3315 is not in a magnetic field, the piston housing 3315 does not exhibit magnetism. When the piston housing 3315 is in a magnetic field, the piston housing 3315 is magnetized to form a magnetic field.

By providing the inductive core body 3312, the coil support 3313 and the coil 3314, the movable member 331 can be energized and form a magnetic field, so that the movable member 331 can adjust the damping of the magnetorheological fluid 3113 entering the diversion port 3311.

By arranging the first pressing block 3316 and the second pressing block 3317, the magnetic induction core 3312, the coil support 3313 and the coil 3314 are tightly pressed together, and then the piston housing 3315 is arranged to wrap the above structure and is attached to the inner side wall of the second accommodating cavity 3112, so that the movable part 331 can keep good axial consistency with the piston rod 332 during movement.

The core 3312 and the piston rod 332 may be connected by a snap-fit connection, a screw connection, or the like, which is not limited thereto. The first pressing block 3316, the second pressing block 3317 and the piston housing 3315 may be connected by a snap-fit connection, a pin connection, or the like, which is not limited thereto.

The second vibration damping assembly 33 changes the damping characteristics of the magnetorheological fluid 3113 by varying the magnetic field strength. When the current in the coil 3314 increases, the magnetic field in the pilot port 3311 increases, and the resistance of the magnetorheological fluid 3113 flowing through the pilot port 3311 increases, so that the damping force output by the second vibration reduction assembly 33 increases. Conversely, when the current in the coil 3314 decreases, the magnetic field in the pilot port 3311 decreases, and the resistance to the magnetorheological fluid 3113 flowing through the pilot port 3311 decreases, thereby decreasing the damping force. Thus, the magnitude of the damping force can be controlled by adjusting the input current to the second damper assembly 33.

In order to reduce the abrasion of the movable member 331 during movement relative to the inner sidewall of the second receiving cavity 3112, a guiding belt 3315c is further disposed around a side of the piston housing 3315 facing the inner sidewall of the second receiving cavity 3112. By providing the guide belt 3315c, the piston housing 3315 is less likely to wear when moving relative to the inner side wall of the second receiving chamber 3112. The guide belt 3315c may be made of a phenolic cloth, etc., and is not limited thereto.

With continued reference to fig. 2 and 4, in one embodiment, the piston rod 332 is removably coupled to the moveable member 331 and forms a seal at the junction. The piston rod 332 is internally provided with a first through hole 3321. The wire is electrically connected to the movable member 331 through the first through hole 3321. By providing the first through hole 3321 and electrically connecting the wire with the movable member 331 through the first through hole 3321, the wire for controlling the energization of the movable member 331 does not have to pass through the second accommodating chamber 3112, enhancing the sealability of the second accommodating chamber 3112.

The sealing manner between the piston rod 332 and the movable member 331 may be a dispensing seal, a setting seal, etc., which is not limited herein. Dispensing seals are used as in this embodiment. By detachably connecting the piston rod 332 with the movable member 331 and forming a seal at the connection, the magnetorheological fluid 3113 cannot flow out of the second accommodating chamber 3112 through the first through hole 3321 while the vibration damping mechanism 3 is easy to assemble, and the tightness of the second accommodating chamber 3112 is increased.

The connection between the piston rod 332 and the movable member 331 may be a threaded connection, a snap connection, or the like, which is not limited herein.

Referring back to fig. 1 and 2, in one embodiment, the vibration damping mechanism 3 includes a vibration damping housing 36 and an elastic member 37. The vibration damping housing 36 is formed with a receiving chamber 361. The damper housing 31 is disposed in the accommodation chamber 361. One end of the elastic member 37 is disposed at one end of the vibration damping housing 31 away from the pan-tilt-head base assembly 2, and the other end is disposed at the bottom of the accommodating cavity 361.

By providing the above-described structure, when external vibration is transmitted to the vibration damping mechanism 3, the elastic member 37 first performs first vibration damping, and then the first vibration damping assembly 32 and the second vibration damping assembly 33 cooperate to perform second vibration damping. The first vibration reduction performed by the elastic member 37 reduces the intensity of vibration, so that the second vibration reduction performed by the first vibration reduction assembly 32 and the second vibration reduction assembly 33 in cooperation is easier to perform self-adaptive adjustment, and the self-adaptive vibration reduction effect of the monitoring device 10 is enhanced. The elastic member 37 may be a spring or the like, and is not limited herein. The elastic member 37 has a larger diameter. In the present embodiment, the diameter of the elastic member 37 is similar to the diameter of the damper housing 31. By setting the elastic member 37 to a larger diameter, the elastic member 37 can be made to move mainly in the direction in which the piston rod 332 moves when the vibration damping effect is exerted, and lateral deflection is not likely to occur, ensuring the vibration damping effect of the vibration damping mechanism 3.

Turning further to fig. 1 and 2, in one embodiment, the pan-tilt-base assembly 2 includes a pan-tilt-base lower shell 21. One of the end of the pan-tilt-base lower shell 21 near the vibration damping mechanism 3 and the end of the vibration damping housing 36 toward the pan-tilt-base assembly 2 is provided with a boss 4. The other of the end of the pan-tilt-base lower case 21 near the vibration damping mechanism 3 and the end of the vibration damping case 36 toward the pan-tilt-base assembly 2 is provided with a concave groove 5. The recessed groove 5 is an annular groove provided circumferentially around the axis. The extension direction of the boss 4 is the same as the movement direction of the piston rod 332. The protruding part 4 can be inserted into the concave groove 5.

By providing the protruding portion 4 and the recess 5, the extending direction of the protruding portion 4 is the same as the moving direction of the piston rod 332, and the protruding portion 4 can be inserted into the recess 5, so that the pan-tilt-base assembly 2 and the vibration-damping housing 36 can maintain good axial alignment along the moving direction of the piston rod 332.

The positions of the protruding portion 4 and the recessed groove 5 may be determined according to the actual situation. As in the present embodiment, the boss 4 is provided at one end of the pan-tilt-bed-base lower case 21 near the vibration damping mechanism 3. The recess 5 is provided at an end of the vibration damping housing 36 facing the pan-tilt-bed base assembly 2. In another embodiment, the boss 4 is disposed at an end of the damper housing 36 facing the pan-tilt-bed base assembly 2. The concave groove 5 is arranged at one end of the pan-tilt-bed base lower shell 21, which is close to the vibration reduction mechanism 3.

The number of the protrusions 4 may be one, two, three, etc., and is not limited herein. The number of the protrusions 4 is four as in the present embodiment.

Referring back to fig. 1 and 2, in an embodiment, the monitoring apparatus 10 further includes a pan-tilt moving assembly 6, one end of the pan-tilt moving assembly 6 is in gear transmission connection with the monitoring device 1, and the other end of the pan-tilt moving assembly 6 is in gear transmission connection with the pan-tilt base assembly 2. By arranging the cradle head movement assembly 6, the monitoring equipment 1 can adjust the angle relative to the cradle head base assembly 2.

In one embodiment, the monitoring device 10 further includes a sensor (not shown) and a controller (not shown). The sensor is electrically connected with the controller. The sensor is used for detecting external vibration and outputting information to the controller. The controller is electrically connected to the coil 3314. The controller may regulate the current output to the coil 3314. When the sensor detects vibration, the controller adjusts the current output to the coil 3314 based on the information transmitted by the sensor. The controller may establish a relational algorithm based on the vibration information and the output current. By providing a sensor and a controller, the monitoring device 10 can detect vibration through the sensor, and correspondingly adjust the input current of the coil 3314 according to an algorithm in the controller, so as to adjust the damping force of the magnetorheological fluid 3113, thereby realizing better self-adaptive adjustment of the vibration reduction damping force.

Compared with the prior art, the monitoring device comprises monitoring equipment, a holder base assembly and a vibration reduction mechanism. The vibration damping mechanism comprises a vibration damping shell, a first vibration damping assembly and a second vibration damping assembly. The vibration damping shell is formed with a containing cavity. The first vibration reduction assembly includes a diaphragm. The diaphragm divides the accommodation chamber into a first accommodation chamber and a second accommodation chamber. The first accommodating cavity is filled with gas. The second accommodating cavity is filled with magnetorheological liquid. The second vibration reduction assembly comprises a movable piece and a piston rod arranged at one end of the movable piece. The movable piece is provided with a guide opening. The other end of the piston rod is detachably connected with the holder base assembly. The movable piece can be electrified and is used for adjusting the damping of the magnetorheological fluid entering the diversion opening. Through arranging the vibration reduction shell, the first vibration reduction assembly and the second vibration reduction assembly to be matched with each other, and then through enabling the movable piece to adjust the damping of the magnetorheological fluid entering the guide opening, the monitoring device can reduce vibration and well adaptively adjust the damping force of vibration reduction.

The terms "first", "second", "third" in the present utility model are used for descriptive purposes only and are not to be construed as indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. A process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A monitoring device, comprising:

monitoring equipment;

a cradle head base assembly;

the vibration reduction mechanism comprises a vibration reduction shell, a first vibration reduction assembly and a second vibration reduction assembly, wherein an accommodating cavity is formed in the vibration reduction shell, the first vibration reduction assembly comprises a diaphragm, the accommodating cavity is divided into a first accommodating cavity and a second accommodating cavity by the diaphragm, gas is filled in the first accommodating cavity, and magnetorheological liquid is filled in the second accommodating cavity;

the second vibration reduction assembly comprises a movable piece and a piston rod arranged at one end of the movable piece, the movable piece is provided with a diversion port, the other end of the piston rod is detachably connected with the holder base assembly, and the movable piece can be electrified and is used for adjusting magnetorheological liquid to enter the diversion port for damping.

2. The monitoring device according to claim 1, wherein the diaphragm comprises a diaphragm body and two bending portions arranged on two sides of the diaphragm body, the bending portions comprise a first bending portion and a second bending portion, the first bending portion is connected to a side wall of the first accommodating cavity, the second bending portion is connected to a bottom of the first accommodating cavity, and the diaphragm body, the two bending portions and the vibration damping shell are enclosed to form the first accommodating cavity.

3. The monitoring device of claim 2, wherein a first seal is disposed between the first bend and a sidewall of the first receiving chamber.

4. The monitoring device of claim 1, wherein the damper housing comprises a first damper housing and a second damper housing covering the first damper housing, a second seal being disposed between the second damper housing and the first damper housing.

5. The monitoring device according to claim 4, wherein a bearing and a third sealing member are provided in a side of the second vibration reduction housing facing the accommodation chamber, and the piston rod penetrates through the second vibration reduction housing, the bearing and the third sealing member in sequence.

6. The monitoring device of claim 1, wherein the moveable member comprises:

the piston shell is provided with an inner cavity, openings are formed in two sides perpendicular to the movement direction of the piston rod, and the piston shell is attached to the inner side wall of the second accommodating cavity;

the coil bracket is arranged in the inner cavity;

the coil is arranged around one side surface of the coil bracket, which is away from the piston rod;

the magnetic induction core body is arranged on one side surface of the coil bracket, which faces the piston rod, and is sleeved and detachably connected with the piston rod;

the first pressing block is sleeved on the piston rod, is positioned at an opening of the piston shell and can be detached from one end of the piston shell, which is far away from the first vibration reduction assembly;

the second pressing block is sleeved on the piston rod, is positioned at the other opening of the piston shell and is detachably arranged at one end, close to the first vibration reduction assembly, of the piston shell;

the piston shell, the inductance core body, the coil support and the coil are connected through the connecting piece, wherein the conduction opening is formed between the piston shell and the inductance core body, between the piston shell and the coil support, and between the piston shell and the inductance core body, the inductance core support and the inductance core are formed with conduction openings.

7. The monitoring device according to claim 1, wherein the piston rod is detachably connected to the movable member and forms a seal at the connection, a first through hole is provided through the piston rod, and a circuit is electrically connected to the movable member through the first through hole.

8. The monitoring device according to claim 1, wherein the vibration damping mechanism comprises a vibration damping housing and an elastic member, the vibration damping housing is formed with a receiving cavity, the vibration damping housing is disposed in the receiving cavity, one end of the elastic member is disposed at one end of the vibration damping housing away from the pan-tilt base assembly, and the other end is disposed at the bottom of the receiving cavity.

9. The monitor device according to claim 8, wherein said pan-tilt-base assembly comprises a pan-tilt-base lower shell, one of an end of said pan-tilt-base lower shell adjacent to said vibration-damping mechanism and an end of said vibration-damping housing facing said pan-tilt-base assembly is provided with a protrusion, the other of an end of said pan-tilt-base lower shell adjacent to said vibration-damping mechanism and an end of said vibration-damping housing facing said pan-tilt-base assembly is provided with a recess, said protrusion extends in the same direction as the movement of said piston rod, and said protrusion is insertable into said recess.

10. The monitoring device of any one of claims 1-9, further comprising a pan-tilt assembly, wherein one end of the pan-tilt assembly is geared to the monitoring apparatus and the other end of the pan-tilt assembly is geared to the pan-tilt base assembly.