CN113171641A - Electric lifting device - Google Patents
Electric lifting device Download PDFInfo
- Publication number
- CN113171641A CN113171641A CN202110416253.7A CN202110416253A CN113171641A CN 113171641 A CN113171641 A CN 113171641A CN 202110416253 A CN202110416253 A CN 202110416253A CN 113171641 A CN113171641 A CN 113171641A
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- CN
- China
- Prior art keywords
- telescopic
- rod
- lifting device
- electric lifting
- telescopic rod
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
- B01D33/0353—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/801—Driving means, shaft packing systems or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an electric lifting device, and belongs to the technical field of electric lifting equipment. The telescopic rod comprises a motor and a telescopic rod, wherein a screw rod is arranged in the telescopic rod, a guide cylinder is sleeved outside the telescopic rod, and a telescopic nut is connected to the end part of the telescopic rod close to one side of the motor; the telescopic nut is sleeved on a screw rod which is connected with the telescopic nut in a matching way, an axial hole is formed in the screw rod, and an induction rod of a magnetic sensor is inserted into the axial hole; the motor drives the screw rod to do rotary motion, and the telescopic nut is driven by the screw rod to do linear telescopic motion along the inner wall of the guide cylinder; a magnetic block which axially moves relative to the induction rod is arranged in the guide cylinder. The invention realizes the control of any position of the lifting device through the built-in structure of the magnetic sensor, and the sensor is not easy to damage and not corroded by drilling gas, thereby widening the application places of products, having compact structure, safety and reliability.
Description
Technical Field
The invention relates to the technical field of electric lifting equipment, in particular to an electric lifting device capable of adjusting the screening angle of a vibrating screen.
Background
The vibrating screen has the main function of realizing solid-liquid separation or particle size classification, in the process of solid-liquid separation, the treatment capacity is one of the main performances of the vibrating screen, and the performances related to the treatment capacity are adjusted to screen mesh size, screening angle and the like. In order to maximize the throughput or to adjust the drying zone of the vibrating screen in practical use (the drying zone is the size of the end of the solid-liquid separating screen of the vibrating screen, and is too small, too large and easily damages the screen), the adjustment of the screening angle is important.
At present, the elevating gear who is used for adjusting shale shaker screening angle generally mainly has: manual screw lifting, hydraulic cylinder lifting and pneumatic lifting. The manual screw rod is time-consuming and labor-consuming to lift; the hydraulic lifting has two modes of manual type and electric type, the electric type has low reliability, the manual type is labor-consuming, the speed is uncontrollable, and meanwhile, the hydraulic pipeline is easy to break down, oil leakage and the like occur, so the maintenance is troublesome; pneumatic lifting control is troublesome, pneumatic influence in a low-temperature environment is large, air pressure is not well controlled, and maintenance is troublesome. When the lifting device is used, the limitation of the highest position and the lowest position of the lifting device can be realized through the limit sensor, and the control of other specific positions cannot be realized.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an electric lifting device, which realizes the control of any position of the lifting device by inserting an induction rod of a magnetic sensor into a screw rod and arranging a magnetic block which axially moves relative to the induction rod in a guide cylinder, namely, by adopting a built-in structure of the magnetic sensor, the sensor is not easy to damage and is not corroded by drilling gas, the application places of products are widened, and the electric lifting device is compact in structure, safe and reliable.
In order to achieve the purpose, the invention adopts the following technical scheme: an electric lifting device comprises a motor and a telescopic rod, wherein a screw rod is arranged inside the telescopic rod, a guide cylinder is sleeved outside the telescopic rod, and a telescopic nut is connected to the end part of the telescopic rod close to one side of the motor;
the telescopic nut is sleeved on a screw rod which is connected with the telescopic nut in a matching manner, an axial hole is formed in the screw rod, and an induction rod of a magnetic sensor is inserted into the axial hole;
the motor drives the screw rod to do rotary motion, and the telescopic nut is driven by the screw rod to do linear telescopic motion along the inner wall of the guide cylinder;
and a magnetic block which axially moves relative to the induction rod is arranged in the guide cylinder.
As an improvement of the invention, the magnetic block is annular, a magnetic block mounting groove is formed in the end part of the screw rod, which is far away from one side of the motor, and the magnetic block is mounted in the magnetic block mounting groove.
As an improvement of the telescopic rod, the magnetic block is annular, one end of the telescopic nut, which is far away from the telescopic rod, is provided with a magnetic block mounting groove, and the magnetic block is mounted in the magnetic block mounting groove.
As an improvement of the invention, the screw rod and the telescopic nut are made of non-magnetic materials or weak magnetic materials.
As an improvement of the invention, the telescopic rod is provided with a radial wire outlet and a radial positioning hole for fixing the magnetic sensor, and the wire outlet and the positioning hole are both distributed at one end of the telescopic rod far away from the motor.
As an improvement of the invention, one end of the guide cylinder is detachably connected with the connecting seat, and the other end of the guide cylinder is detachably connected with the guide sleeve sleeved on the telescopic rod.
As an improvement of the invention, the guide sleeve is a stepped sleeve, the outer surface of the small-diameter section is provided with an external thread matched with the guide cylinder, and a sealing element is arranged between the inner surface of the large-diameter section and the telescopic rod.
As an improvement of the invention, the connecting seat is provided with a radial wire outlet, and the magnetic sensor is fixedly arranged in the connecting seat.
As an improvement of the invention, an explosion-proof safety barrier is arranged in the telescopic rod between the magnetic sensor and the wire outlet.
As an improvement of the invention, an explosion-proof safety grid is arranged in a connecting seat between the magnetic sensor and the wire outlet.
The invention has the beneficial effects that: the electric lifting device has the advantages that the induction rod of the magnetic sensor is inserted into the screw rod, the magnetic block which axially moves relative to the induction rod is further arranged in the guide cylinder, namely, the control of any position of the lifting device is realized through the built-in structure of the magnetic sensor, the automatic control of the screening angle is further conveniently realized, the sensor is not easy to damage and is not corroded by drilling gas, and the application places of products are widened. The end part of the telescopic rod close to one side of the motor is connected with a telescopic nut, the motor drives the screw rod to do rotary motion, the telescopic nut is driven by the screw rod to do linear telescopic motion along the inner wall of the guide cylinder, and the telescopic nut drives the telescopic rod to do linear motion together.
Furthermore, the screw rod and the telescopic nut are both made of non-magnetic materials or weak-magnetic materials. The screw rod and the telescopic nut are made of non-magnetic materials or weak magnetic materials and are mainly used for overcoming the influence of magnetic force in the lifting process.
Furthermore, one end of the guide cylinder is detachably connected with the connecting seat, and the other end of the guide cylinder is detachably connected with a guide sleeve sleeved on the telescopic rod, so that the disassembly and assembly are convenient.
Furthermore, the guide sleeve is a stepped sleeve, the outer surface of the small-diameter section is provided with an external thread matched with the guide cylinder, and a sealing element is arranged between the inner surface of the large-diameter section and the telescopic rod. Set up the sealing member, can prevent in debris get into the guide cylinder that the phenomenon of avoiding the inside part of guide cylinder to damage takes place, the holistic life of extension fixture, simple structure, easy dismounting.
Furthermore, an explosion-proof safety barrier is arranged between the magnetic sensor and the wire outlet. Explosion proof designs can be used in more demanding environments.
Drawings
Fig. 1 is a schematic structural diagram of a motor lifting device according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a motor lifting device in a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vibrating screen at a screening angle of 0 °;
fig. 4 is a schematic structural diagram of the vibrating screen at a screening angle of X °.
In the figure, 1, a motor; 2. a guide cylinder; 3. a telescopic rod; 4. a screw rod; 5. a magnetic block; 6. positioning holes; 7. a connecting part I; 8. connecting sleeves; 9. an outlet; 10. a seal ring; 11. a guide sleeve; 12. an induction rod; 13. a telescopic nut; 14. a bearing outer retainer ring I; 15. a bearing; 16. a bearing outer retainer ring II; 17. a connecting seat; 18. a connecting part II; 19. an upper ear seat; 20. a lower ear seat; 21. a gantry frame; 22. a base; 23. a sieve box support.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
It should be noted that the terms of orientation such as up, down, outer, inner, left, right, front and rear in the embodiments of the present invention are only relative concepts or reference to the normal use state of the product, and should not be considered as limiting.
The first embodiment is as follows:
as shown in fig. 1, an electric lifting device comprises a motor 1 and a telescopic rod 3, wherein a screw rod 4 is arranged inside the telescopic rod 3, a guide cylinder 2 is sleeved outside the telescopic rod 3, a telescopic nut 13 is connected to the end part of the telescopic rod 3 close to one side of the motor 1, and the side close to the motor 1 is the left side; the inner wall of the left end of the telescopic rod 3 is provided with an internal thread, and the outer surface of the right side of the telescopic nut 13 is provided with an external thread which is different from the internal thread of the telescopic rod 3, namely, the telescopic rod 3 is in threaded connection with the telescopic nut 13; the telescopic nut 13 is sleeved on the screw rod 4 which is connected with the telescopic nut in a matching way, an axial hole is formed in the screw rod 4, and an induction rod 12 of a magnetic sensor is inserted into the axial hole; the right end of the screw rod 4 is provided with a magnetic block mounting groove, the magnetic block is mounted in the mounting groove, preferably, the magnetic block 5 is annular, the annular magnetic block 5 is detachably connected in the magnetic block mounting groove, and if bolt fixing and the like can be adopted, the specific connection mode of the magnetic block 5 is not limited; the right end of the telescopic rod 3 is provided with a radial wire outlet 9 and a radial positioning hole 6 for fixing the magnetic sensor, the magnetic sensor is fixed at the right end of the inner part of the telescopic rod 3 through the radial positioning hole 6 by a screw, and the magnetic sensor is led out through the radial wire outlet 9 in a standard mode. Preferably, the gap between the induction rod 3 and the magnetic block 5 is controlled within 20mm, so that signals can be collected conveniently.
The screw rod 4 and the telescopic nut 13 are made of non-magnetic materials or weak magnetic materials, such as stainless steel, brass, plastics or non-magnetic steel. Preferably, the screw rod 4 is made of 304 stainless steel, and the telescopic nut 13 is made of brass, and the specific material thereof is not limited by the present invention.
The left end of guide cylinder 2 can be dismantled with connecting seat 17 and be connected, and the other end can be dismantled with the uide bushing 11 of cover on telescopic link 3 and be connected. Preferably, the detachable connection is a threaded connection. That is, the inner wall of the right end of the connecting seat 17 is provided with an internal thread, the left end of the guide cylinder 2 is provided with an external thread which is matched and connected with the internal thread of the connecting seat 17, and the inner wall of the right end of the guide cylinder 2 is provided with an internal thread which is matched and connected with the guide sleeve 11; the guide sleeve 11 is a stepped sleeve, an external thread matched with the guide cylinder is arranged on the outer surface of the left small-diameter section, a sealing element 10 is arranged between the inner surface of the right large-diameter section and the telescopic rod 3, and preferably, an annular sealing groove for installing an O-shaped sealing ring is arranged on the inner wall of the guide sleeve. Set up the sealing member, can prevent in debris get into the guide cylinder, avoid the phenomenon of 2 inside parts damages of guide cylinder to take place, the holistic life of extension fixture, simple structure, easy dismounting.
An explosion-proof safety barrier is arranged in the telescopic rod 3 between the magnetic sensor and the wire outlet 9. Because the safety barrier is a safety interface of the intrinsic safety circuit, when the equipment in the safety place is in a normal state, the system operates normally; when equipment breaks down, the safety grid can limit voltage and current led to the site in time, dangerous energy is controlled to enter the intrinsic safety end, explosion of dangerous gas caused by spark energy is avoided, and the safety grid can be used in a harsher environment.
It should be noted that the connecting portion i 7 may also be connected to the telescopic rod 3 by a bolt, for example, bolt connecting holes are formed in the right end surface of the telescopic rod 3 and the blocking plate; the connecting part II 18 can also be connected to the connecting seat 17 through a bolt, for example, bolt connecting holes are formed in the left end face of the connecting seat 17 and the blocking plate; the present embodiment is not limited to the specific connection manner of the connection portion i 7 and the connection portion ii 18.
As shown in fig. 3 and 4, fig. 3 is a schematic view showing a structural state of the vibrating screen to which the present invention is attached and at a screening angle of 0 °, and fig. 4 is a schematic view showing a structural state of the vibrating screen to which the present invention is attached and at a screening angle of X °. The upper part of the vibrating screen frame is hinged to an ear seat arranged on the lower surface of a beam at the top of a dragon door frame 21 through an ear plate on the left side of a connecting part II 18, the bottom of the vibrating screen frame is hinged to an ear seat arranged on the upper surface of a beam at the bottom of the dragon door frame 21 through an ear plate on the right side of a connecting part I7, the beam at the bottom of the dragon door frame 21 is fixedly arranged on a screen box support 23, and the dragon door frame 21 is arranged on a base 22, namely, the beam at the bottom of the dragon door frame 21 can move up and down on the dragon door frame 21 under the action of an electric lifting device, so that the adjustment of the screening angle of the vibrating screen is completed.
It should be noted that the above-mentioned gantry 21 can also adopt the structural form of a sleeve to complete the adjustment of the screening angle, and at the same time, besides adopting the hinging mode of the ear plate and the ear seat through the pin shaft, it can also adopt other connecting modes.
For better realization automated control, pass through the cable with motor and magnetic sensor and be connected with the PLC controller, by PLC control motor, and then control the flexible of telescopic link 3, and adjust the optional position of telescopic link in real time according to the relative displacement data between magnetic sensor's induction bar 12 and the magnetic path 5, and then realize the real time control of shale shaker screening angle, realize accurate control, the performance is safe and reliable, in the lift in-process of this mode, magnetic sensor's induction bar is along with telescopic link 3 linear movement together, and the position of magnetic path 5 does not take place to remove.
In summary, the electric lifting device disclosed by the invention has the advantages that the motor drives the pair of screw nuts, the rotary motion of the motor is changed into linear motion, the lifting action of the telescopic rod 3 is completed by utilizing the forward and reverse rotation of the motor 1, and the screening angle of the vibrating screen can be adjusted randomly; in addition, through the built-in magnetic sensor, compared with the external sensor, the phenomena that the external sensor is easy to collide with and corrode in the use environment of the vibrating screen are avoided, the service life of the sensor is prolonged, the structure is simple, the maintenance is convenient, the magnetic sensor is suitable for severe environment, and the market popularization value is high.
Example two:
as shown in fig. 2, the present embodiment is different from the first embodiment in that: the magnet 5 is mounted on the telescopic nut 13 and moves linearly along with the telescopic nut 13, the magnetic sensor is fixedly mounted in the connecting seat 17, the outlet 9 is arranged on the connecting seat 17, and compared with the first embodiment, the outlet 9 of the first embodiment is of an outlet-up type, namely the outlet is arranged on the connecting seat 17 on the upper portion of the invention, so that the phenomenon that the telescopic rod 3 rotates when not mounted on a dragon door frame and then winds can be avoided. In order to further explain the content of the present embodiment, it is expressed in detail as follows:
the left end face of the telescopic nut 13 is provided with a magnetic block mounting groove, and the magnetic block 5 is mounted in the magnetic block mounting groove; preferably, the magnetic block 5 is annular, the magnetic block 5 is detachably connected in the annular magnetic block mounting groove through bolts and the like, and in order to collect signals, the gap between the induction rod 3 and the magnetic block 5 is controlled within 20 mm. In the lifting process of the mode, the magnetic block 5 moves linearly along with the telescopic nut 13, and the position of the induction rod 12 of the magnetic sensor does not move.
A radial outlet 9 is arranged on the connecting seat 17, and the magnetic sensor is fixedly arranged in the connecting seat 17. An explosion-proof safety barrier is arranged in the connecting seat 17 between the magnetic sensor and the wire outlet 9. Because the safety barrier is a safety interface of the intrinsic safety circuit, when the equipment in the safety place is in a normal state, the system operates normally; when equipment breaks down, the safety grid can limit voltage and current led to the site in time, dangerous energy is controlled to enter the intrinsic safety end, explosion of dangerous gas caused by spark energy is avoided, and the safety grid can be used in a harsher environment.
The above is a detailed description of the electric lifting device provided by the present invention, and a specific example is applied in the present document to explain the structural principle and the implementation of the present invention, and the above example is only used to help understand the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides an electric lifting device, includes motor and telescopic link, its characterized in that: the inner part of the telescopic rod is provided with a screw rod, the outer part of the telescopic rod is sleeved with a guide cylinder, and the end part of the telescopic rod close to one side of the motor is connected with a telescopic nut;
the telescopic nut is sleeved on a screw rod which is connected with the telescopic nut in a matching manner, an axial hole is formed in the screw rod, and an induction rod of a magnetic sensor is inserted into the axial hole;
the motor drives the screw rod to do rotary motion, and the telescopic nut is driven by the screw rod to do linear telescopic motion along the inner wall of the guide cylinder;
and a magnetic block which axially moves relative to the induction rod is arranged in the guide cylinder.
2. An electric lifting device according to claim 1, characterized in that: the magnetic block is annular, a magnetic block mounting groove is formed in the end portion, far away from one side of the motor, of the screw rod, and the magnetic block is mounted in the magnetic block mounting groove.
3. An electric lifting device according to claim 1, characterized in that: the magnetic block is annular, a magnetic block mounting groove is formed in one end, far away from the telescopic nut, of the telescopic rod, and the magnetic block is mounted in the magnetic block mounting groove.
4. An electric lifting device according to claim 1, characterized in that: the lead screw and the telescopic nut are made of non-magnetic materials or weak magnetic materials.
5. An electric lifting device according to claim 2, characterized in that: the telescopic rod is provided with a radial wire outlet and a radial positioning hole for fixing the magnetic sensor, and the wire outlet and the positioning hole are both distributed at one end of the telescopic rod far away from the motor.
6. An electric lifting device according to any one of claims 1 to 5, characterized in that: one end of the guide cylinder is detachably connected with the connecting seat, and the other end of the guide cylinder is detachably connected with a guide sleeve sleeved on the telescopic rod.
7. An electric lifting device according to claim 6, characterized in that: the guide sleeve is a stepped sleeve, external threads matched with the guide cylinder are arranged on the outer surface of the small-diameter section, and a sealing element is arranged between the inner surface of the large-diameter section and the telescopic rod.
8. An electric lifting device according to claim 6, characterized in that: a radial wire outlet is formed in the connecting seat, and the magnetic sensor is fixedly installed in the connecting seat.
9. An electric lifting device according to claim 5, characterized in that: an explosion-proof safety barrier is arranged in the telescopic rod between the magnetic sensor and the wire outlet.
10. An electric lifting device according to claim 8, characterized in that: and an explosion-proof safety barrier is arranged in the connecting seat between the magnetic sensor and the wire outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416253.7A CN113171641A (en) | 2021-04-19 | 2021-04-19 | Electric lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110416253.7A CN113171641A (en) | 2021-04-19 | 2021-04-19 | Electric lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113171641A true CN113171641A (en) | 2021-07-27 |
Family
ID=76923702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110416253.7A Pending CN113171641A (en) | 2021-04-19 | 2021-04-19 | Electric lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113171641A (en) |
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