CN213930054U - Lifting device capable of accurately controlling displacement precision - Google Patents
Lifting device capable of accurately controlling displacement precision Download PDFInfo
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- CN213930054U CN213930054U CN202022525042.0U CN202022525042U CN213930054U CN 213930054 U CN213930054 U CN 213930054U CN 202022525042 U CN202022525042 U CN 202022525042U CN 213930054 U CN213930054 U CN 213930054U
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- guide rail
- sliding block
- displacement
- lifting device
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Abstract
The utility model relates to a lifting device for accurately controlling displacement precision, which comprises a base, a guide rail and a power component, wherein the guide rail is arranged on the base, the guide rail is provided with a plurality of guide rails which are arranged in parallel, the guide rail is sequentially sleeved with a first slide block, a second slide block and a displacement adjusting piece from top to bottom, the first slide block and the second slide block can slide along the guide rail, the first slide block is connected with the second slide block through a traction piece, the traction piece comprises a limiting part and a connecting part which are sequentially arranged from top to bottom, the limiting part is positioned above the first slide block, the connecting part passes through a through hole on the first slide block and is fixedly connected with the second slide block, the diameter of the through hole is larger than that of the connecting part, the diameter of the through hole is smaller than that of the limiting part, and the displacement adjusting piece is positioned below the second slide block, the power assembly is sleeved on the guide rail and can slide along the guide rail, and the power assembly is used for driving the first sliding block to slide along the guide rail. The lifting device for accurately controlling the displacement precision has the advantages of low production cost, simple and reliable adjusting mode, high adjusting precision and small use error.
Description
Technical Field
The utility model relates to a lifting support technical field especially relates to a elevating gear of accurate control displacement precision.
Background
Viscometers, rheometers and other instruments that require repeated control of displacement accuracy often require use in conjunction with a lifting frame. In the prior art, the lifting support has two different types of manual lifting and electric lifting, the manufacturing cost of the manual lifting support is low, but the displacement control precision is low, the repeatability is poor, the displacement control precision of the electric lifting support is higher than that of the manual lifting support, but the displacement control precision of the electric lifting support is determined by the motor drive control precision and the screw rod precision, so that the higher the required precision of the displacement control of the electric lifting support is, the higher the manufacturing cost is.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model aims at providing a elevating gear of accurate control displacement precision, it does not rely on motor drive control precision and lead screw precision, can accurate control instrument's displacement, adjusts the precision height, and displacement repeatability is good, simultaneously low in cost, the volume production of being convenient for.
Based on this, the utility model provides a elevating gear of accurate control displacement precision, it includes:
the base is provided with a plurality of mutually parallel guide rails;
the first sliding block is sleeved on the guide rail and can slide along the guide rail, and a through hole penetrating through the first sliding block is formed in the first sliding block;
the second sliding block is sleeved on the guide rail and can slide along the guide rail, and the second sliding block is positioned below the first sliding block;
the traction piece comprises a limiting part and a connecting part which are sequentially arranged from top to bottom, the limiting part is positioned above the first sliding block, the connecting part penetrates through the through hole and is fixedly connected with the second sliding block, the diameter of the through hole is larger than that of the connecting part, and the diameter of the through hole is smaller than that of the limiting part;
the displacement adjusting piece is sleeved on the guide rail and can slide along the guide rail, and the displacement adjusting piece is positioned below the second sliding block;
and the power assembly is used for driving the first sliding block to slide along the guide rail.
In some embodiments of the present application, the power assembly includes a motor and a lead screw connected to an output end of the motor, the motor is disposed on the base, and the first slider is sleeved on the lead screw.
In some embodiments of the present application, a controller is disposed beside the base, and the controller is electrically connected to the motor.
In some embodiments of the present application, a limit switch connected to the first slider is disposed above the traction member, and the limit switch is electrically connected to the controller.
In some embodiments of the present application, the device further comprises a bracket sleeved on the guide rail, wherein the bracket is located below the displacement adjusting member and can slide along the guide rail.
In some embodiments of the present application, the displacement adjuster is threadedly coupled to the guide rail.
In some embodiments of the present application, the connecting portion of the pulling member is threadedly connected to the second slider.
In some embodiments of the present application, the bottom of the base is provided with a plurality of supporting legs with adjustable height and inclination.
In some embodiments of the present application, a first end of each of the rails is coupled to the base and a second end of each of the rails is coupled to the top plate.
The embodiment of the utility model provides a pair of elevating gear of accurate control displacement precision compares with prior art, and its beneficial effect lies in:
when the device is used, a testing host of a viscometer or a rheometer is fixed on the second sliding block, the testing bottom plate is fixed on the base, the measuring rotor is fixed on the second sliding block along with the measuring host, the first sliding block slides upwards along the guide rail under the driving of the power assembly in the ascending process, the first sliding block is contacted with the limiting part of the traction piece along with the sliding of the first sliding block, the first sliding block continues to slide upwards, the traction piece slides upwards under the driving of the first sliding block, and the second sliding block connected with the traction piece also slides upwards along with the first sliding block, so that the upward displacement of the testing host is realized; furthermore, in the descending process, the first sliding block slides downwards along the guide rail under the driving of the power assembly, under the action of gravity, the limiting part of the traction piece is close to the first sliding block, the traction piece and the second sliding block synchronously slide downwards along with the sliding of the first sliding block, based on the arrangement of the displacement adjusting piece, the second sliding block is firstly contacted with the displacement adjusting piece in the downwards sliding process, due to the blocking of the displacement adjusting piece, the second sliding block and the traction piece fixed on the second sliding block stop sliding simultaneously, at the moment, the first sliding block still continues to slide downwards under the driving of the motor, the limiting part of the traction piece is separated from the first sliding block and moves towards the direction far away from the first sliding block, along with the increase of the downwards sliding displacement of the first sliding block, the limiting part of the traction piece is gradually far away from the first sliding block, and finally the limiting part of the traction piece is contacted with the limiting switch above the first sliding block and triggers the limiting switch, after the limit switch is triggered, the motor is controlled to stop running, the first sliding block also stops sliding and falls on the second sliding block, and the second sliding block accurately falls on a preset designated position. Therefore, the accuracy and stability of data measured by the viscometer or the rheometer depend on the gap or pressure value between the measuring rotor and the testing base plate on the measuring host, the setting of the displacement adjusting piece enables an operator to confirm the position of the second slider to be stopped in advance before the second slider slides downwards, the final gap or pressure value between the measuring rotor and the testing base plate can be quickly adjusted by sliding the displacement adjusting piece, the sliding of the second slider at the corresponding position can be stopped when the second slider slides downwards at each time, the measuring principle is simple and easy to understand, the measuring precision is high, and the repeatability is good; in addition, the lifting device for accurately controlling the displacement precision has low structural requirement on the power assembly, and can obviously reduce the production cost.
Drawings
Fig. 1 is a schematic structural view of a lifting device for accurately controlling displacement accuracy according to an embodiment of the present invention;
FIG. 2 is a detail view at A of FIG. 1;
fig. 3 is a schematic view of a base structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a traction member according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a displacement adjusting member according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a viscometer according to an embodiment of the present invention.
In the figure: 1. a base; 11. a guide rail; 12. supporting legs; 13. a top plate; 2. a first slider; 21. a limit switch; 3. a second slider; 4. a traction member; 41. a limiting part; 42. a connecting portion; 5. a displacement adjustment member; 51. a third slider; 52. a limiting fine adjustment nut; 53. locking the threaded hole; 6. a power assembly; 61. a motor; 62. a screw rod; 7. a viscometer; 71. a test host; 72. a measuring rotor; 73. testing the bottom plate; 8. a controller; 9. and (4) a bracket.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
It should be understood that the present invention uses the terms "front", "back", etc. to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "front" information may also be referred to as "back" information, and "back" information may also be referred to as "front" information without departing from the scope of the present invention.
As shown in fig. 1 to 7, the present invention provides a lifting device for precisely controlling displacement accuracy, which comprises a base 1, and a guide rail 11 and a power assembly 6 arranged on the base 1, specifically, a plurality of guide rails 11 parallel to each other are arranged on the base 1, a first slider 2, a second slider 3 and a displacement adjusting member 5 are sequentially sleeved on the guide rail 11 from top to bottom, the first slider 2 and the second slider 3 can slide along the guide rail 11, the first slider 2 is connected with the second slider 3 through a traction member 4, the traction member 4 comprises a limiting portion 41 and a connecting portion 42 sequentially arranged from top to bottom, the limiting portion 41 is arranged above the first slider 2, the connecting portion 42 passes through a through hole on the first slider 2 and is fixedly connected with the second slider 3, the diameter of the through hole is larger than the connecting portion 42, the diameter of the through hole is smaller than the limiting portion 41, the displacement adjusting member 5 is arranged below the second slider 3, the first sliding block 2 is sleeved on the guide rail 11 and can slide along the guide rail 11, and the power assembly 6 is used for driving the first sliding block to slide along the guide rail 11.
Based on the structure, when in use, the test main machine 71 of the viscometer 7 is fixed on the second slide block 3, the test bottom plate 73 is fixed on the base 1, at the moment, the measurement rotor 72 is also fixed on the second slide block 3 along with the measurement main machine 71, in the ascending process, the first slide block 2 slides upwards along the guide rail 11 under the driving of the power assembly 6, the first slide block 2 is contacted with the limiting part 41 of the traction piece 4 along with the sliding of the first slide block 2, the first slide block 2 continues to slide upwards, the traction piece 4 is driven by the first slide block 2 to slide upwards, and the second slide block 3 connected with the traction piece 4 also slides upwards along with the first slide block, so that the upward displacement of the test main machine 71 is realized; further, during the descending process, the first sliding block 2 slides downwards along the guide rail 11 under the driving of the power assembly 6, the traction piece 4 and the second slide block 3 also slide downwards along with the sliding of the first slide block 2 under the action of gravity, and based on the arrangement of the displacement adjusting piece 5, the second slide block 3 is contacted with the displacement adjusting piece 5 in the process of sliding downwards, because the displacement adjusting part 5 stops sliding due to blocking, at the moment, the first sliding block 2 still continues to slide downwards under the driving of the motor, the limiting part 41 of the traction part 4 is separated from the first sliding block 2 and moves towards the reverse direction, the reverse displacement of the limiting part 41 of the traction part 4 is increased along with the increase of the downward sliding of the first sliding block 2, the limiting part 41 of the traction part 4 triggers the limiting switch 21 above the traction part, the power assembly 6 stops running after triggering, the first sliding block 2 also stops sliding, all parts of the whole mechanism stop moving, and therefore the second sliding block 3 falls on a preset designated position. Thus, the accuracy and stability of the data measured by the viscometer 7 or the rheometer depend on the gap or pressure value between the measuring rotor 72 and the testing base plate 73 on the measuring host, and the setting of the displacement adjusting part 5 enables an operator to adjust the position of the second slider 3 to be stopped in advance before the second slider 3 slides downwards, and the final gap between the measuring rotor 72 and the testing base plate 73 can be quickly adjusted by accurately sliding the displacement adjusting part 5, so that the sliding of the second slider 3 can be stopped at the corresponding position every time the second slider slides downwards, the measuring principle is simple and easy to understand, and the measuring repeatability precision is high; in addition, the lifting device for accurately controlling the displacement precision has low requirements on the structure of the power assembly 6, the displacement control precision of the device is free from the requirements of high precision of motor drive and grinding precision of the screw rod, and the production cost can be obviously reduced.
Further, as shown in fig. 4, in the embodiment of the present invention, the power assembly 6 includes a motor 61 and a screw rod 62 connected to an output end of the motor 61, the motor 61 is disposed on the base 1, and the screw rod 62 is sleeved with the first slider 2. Based on this, the utility model provides a lifting device passes through the slip of the first slider 2 of motor 61 and lead screw 62 control, its simple structure, and convenient to use can effective reduction in production cost.
It should be noted that, power component 6 of lifting device in this application can also be other multiple forms, for example pneumatic cylinder or electric putter, on satisfying the gliding basis of drive first slider 2 along guide rail 11, operating personnel can rationally select different power component 6 according to the actual use condition, and it is no longer repeated here.
Optionally, as shown in fig. 1 and fig. 2, a controller 8 is arranged beside the base 1, the controller 8 is electrically connected to the motor 61, the controller 8 controls the motor 61 to operate in a forward and reverse direction and stop the lifting device, the controller 8 may be a PLC integrated machine, a single chip microcomputer or two trigger button switches, specifically, in some embodiments of the present application, a limit switch 21 connected to the first slider 2 is further arranged above the traction member 4, the limit switch 21 is electrically connected to the controller 8, in a descending process of the first slider 2 and the second slider 3, the second slider 3 contacts the displacement adjusting member 5 to stop sliding, the first slider 2 continues to slide downward, the limit portion 41 of the traction member 4 slides along with the first slider 2 upwards touches the limit switch 21, and the limit switch 21 sends a signal to the controller 8 to control the motor 61 to stop operating. So, limit switch 21's setting can in time stop motor 61's operation after second slider 3 reachs the assigned position, stops the gliding of first slider 2, and through logic design like this, the displacement of second slider 3 and displacement repeatability are decided by displacement regulating part 5, and have nothing to do with motor 61 and lead screw 62's precision, and the repeatability does not have the error, promotes elevating gear's displacement precision, greatly reduced cost of manufacture.
Optionally, as shown in fig. 7, in some embodiments of the present application, a bracket 9 is further disposed below the displacement adjusting member 5, and the bracket 9 is sleeved on the guide rail 11 and can slide along the guide rail 11. The length of the measuring rotor 72 of the partial viscometer 7 is limited, and in order to ensure the contact between the measuring rotor 72 and the test base plate 73 during actual testing, the bracket 9 is arranged below the displacement adjusting member 5, the test base plate 73 can be arranged on the bracket 9 during actual use, the distance between the test base plate 73 and the measuring rotor 72 can be changed by sliding the bracket 9 up and down, and the influence on the measurement work due to the insufficient length of the measuring rotor 72 is avoided.
Further, as shown in fig. 2, in some embodiments of the present application, the bottom of the base 1 is provided with a plurality of height-adjustable supporting legs 12, and an operator can adjust the height and the inclination of the whole lifting device by adjusting the height of the supporting legs 12, so as to improve the use experience of the operator, and meanwhile, when encountering an uneven test table, the test base plate 73 can be kept flat by respectively adjusting the height of each supporting leg 12, so as to meet the test requirement.
Further, a first end of each guide rail 11 is connected to the base 1, and a second end of each guide rail 11 is connected to the top plate 13. Another limit switch is arranged below the top plate 13, so that sliding end points are equivalently arranged for the first sliding block 2 and the second sliding block 3, and the influence on subsequent measurement work caused by the fact that the first sliding block 2 and the second sliding block 3 slide out of the screw rod 62 is avoided.
In addition, the connecting part 42 of the traction part 4 is in threaded connection with the second sliding block 3, the distance between the second sliding block 3 and the traction part 4 can be slowly adjusted by rotating the connecting part 42 during use, the connecting mode is simple and reliable, the adjusting precision is high, and the use is very convenient.
In addition, as shown in fig. 6, the displacement adjusting element 5 includes a third slider 51 sleeved on the guide rail 11 and capable of sliding along the guide rail 11, and a position-limiting fine-adjustment nut 52 sleeved on the third slider 51, wherein the position-limiting fine-adjustment nut 52 is in threaded connection with the third slider 51. During actual use, the third sliding block 51 is slid to complete long-distance adjustment, and then fine adjustment is achieved by slowly rotating the limiting fine adjustment nut 52. It should be noted that, the third slider 51 is further provided with a dead-lock threaded hole 53, and when the displacement adjusting member 5 is adjusted to reach a designated position, the third slider 51 is fixed by a dead-lock bolt arranged in the dead-lock threaded hole 53, so that the displacement adjusting member 5 is prevented from sliding in the use process and the adjusting precision is prevented from being affected.
To sum up, the utility model provides a lifting device for accurately controlling displacement precision, which comprises a base, a guide rail and a power component, wherein the guide rail and the power component are arranged on the base, the base is provided with a plurality of guide rails which are parallel to each other, the guide rail is sleeved with a first slide block, a second slide block and a displacement adjusting piece from top to bottom in sequence, the first slide block and the second slide block can slide along the guide rail, the first slide block is connected with the second slide block through a traction piece, the traction piece comprises a limiting part and a connecting part which are arranged from top to bottom in sequence, the limiting part is arranged above the first slide block, the connecting part passes through a through hole on the first slide block and is fixedly connected with the second slide block, the diameter of the through hole is larger than that of the connecting part, the diameter of the through hole is smaller than that of the limiting part, the displacement adjusting piece is arranged below the second slide block, the power assembly is sleeved on the guide rail and can slide along the guide rail, and the power assembly is used for driving the first sliding block to slide along the guide rail. Compared with the prior art, the lifting device for accurately controlling the displacement precision has low requirements on parts of main control precision, such as a driving motor, a screw rod, a position sensor and the like, so that the production cost is low, the adjusting mode is simple and reliable, the adjustment is easy, and the use repeatability error is zero.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a lifting device of accurate control displacement precision which characterized in that includes:
the base is provided with a plurality of mutually parallel guide rails;
the first sliding block is sleeved on the guide rail and can slide along the guide rail, and a through hole penetrating through the first sliding block is formed in the first sliding block;
the second sliding block is sleeved on the guide rail and can slide along the guide rail, and the second sliding block is positioned below the first sliding block;
the traction piece comprises a limiting part and a connecting part which are sequentially arranged from top to bottom, the limiting part is positioned above the first sliding block, the connecting part penetrates through the through hole and is fixedly connected with the second sliding block, the diameter of the through hole is larger than that of the connecting part, and the diameter of the through hole is smaller than that of the limiting part;
the displacement adjusting piece is sleeved on the guide rail and can slide along the guide rail, and the displacement adjusting piece is positioned below the second sliding block;
and the power assembly is used for driving the first sliding block to slide along the guide rail.
2. The lifting device for accurately controlling the displacement precision according to claim 1, wherein the power assembly comprises a motor and a screw rod connected with an output end of the motor, the motor is arranged on the base, and the screw rod is sleeved with the first sliding block.
3. The lifting device for accurately controlling the displacement accuracy according to claim 2, wherein a controller is arranged beside the base, and the controller is electrically connected with the motor.
4. The lifting device for accurately controlling the displacement precision as claimed in claim 3, wherein a limit switch connected with the first sliding block is arranged above the traction member, and the limit switch is electrically connected with the controller.
5. The lifting device for accurately controlling the displacement accuracy according to claim 1, further comprising a bracket sleeved on the guide rail, wherein the bracket is located below the displacement adjusting member and can slide along the guide rail.
6. The lifting device for accurately controlling the displacement precision as claimed in claim 1, wherein the displacement adjusting member comprises a third slider and a limiting fine-tuning nut, the third slider is sleeved on the guide rail and can slide along the guide rail, and the limiting fine-tuning nut is sleeved on the third slider and is in threaded connection with the third slider.
7. The lifting device for accurately controlling the displacement accuracy according to claim 1, wherein the connecting part of the traction piece is in threaded connection with the second slider.
8. The lifting device for accurately controlling the displacement accuracy as claimed in claim 1, wherein the bottom of the base is provided with a plurality of supporting feet with adjustable height and inclination.
9. The lifting device for accurately controlling displacement accuracy as claimed in claim 1, wherein a first end of each of the guide rails is connected to the base, and a second end of each of the guide rails is connected to the top plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022525042.0U CN213930054U (en) | 2020-11-04 | 2020-11-04 | Lifting device capable of accurately controlling displacement precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022525042.0U CN213930054U (en) | 2020-11-04 | 2020-11-04 | Lifting device capable of accurately controlling displacement precision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213930054U true CN213930054U (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022525042.0U Active CN213930054U (en) | 2020-11-04 | 2020-11-04 | Lifting device capable of accurately controlling displacement precision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213930054U (en) |
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2020
- 2020-11-04 CN CN202022525042.0U patent/CN213930054U/en active Active
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