CN215980680U - Lead screw protection device and tire dynamic and modal test equipment - Google Patents
Lead screw protection device and tire dynamic and modal test equipment Download PDFInfo
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- CN215980680U CN215980680U CN202121812109.7U CN202121812109U CN215980680U CN 215980680 U CN215980680 U CN 215980680U CN 202121812109 U CN202121812109 U CN 202121812109U CN 215980680 U CN215980680 U CN 215980680U
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Abstract
The utility model discloses a screw rod protection device and tire dynamic and modal testing equipment. The screw rod feeding device comprises a screw rod, a screw rod nut and a sliding table, and the screw rod protection device comprises a guide shaft, a sliding sleeve and a hoop device; the guide shaft is fixed on one side of the screw rod in parallel; the sliding sleeve is sleeved on the guide shaft and is fixedly connected with the sliding table; along the direction of feed of slip table, the staple bolt ware cover is established on the guiding axle and is located the rear side of sliding sleeve, and the staple bolt ware follows the sliding sleeve walking, and the staple bolt ware has the staple bolt structure that can tighten/loosen the guiding axle manually or automatically. The guide shaft parallel to the screw rod is arranged, the sliding sleeve sliding along the sliding table is arranged on the guide shaft, and the hoop device following the sliding sleeve is arranged on the guide shaft.
Description
Technical Field
The utility model relates to the field of screw rod feeding devices, in particular to a screw rod protection device and a tire dynamic and modal test device.
Background
The screw feeding device is one of the common feeding devices, and is widely applied to various mechanical equipment. It includes lead screw, screw-nut, slip table and slip table, and the slip table makes the slip table can slide along the direction of feed, and screw-nut connects soon in order to drive the slip table on the lead screw, so, realize the rotary motion of lead screw promptly and convert into the linear motion of slip table.
However, the axial bearing force of the screw rod feeding device is extremely poor, so that the screw rod feeding device cannot be applied to the feeding device with heavy axial load, and certain limitation is caused to the application scene of the screw rod feeding device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a screw rod protection device capable of protecting a screw rod feeding device to bear axial heavy load.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a lead screw protection device is applied to a lead screw feeding device, the lead screw feeding device comprises a lead screw, a lead screw nut and a sliding table, and the lead screw protection device comprises a guide shaft, a sliding sleeve and a hoop device; the guide shaft is fixed on one side of the screw rod in parallel; the sliding sleeve is sleeved on the guide shaft and is fixedly connected with the sliding table; along the direction of feed of slip table, tight cover that rises is established just be located on the guiding axle the rear side of sliding sleeve, tight cover that rises follows the sliding sleeve slides together, tight cover that rises has can be manual or automatic cramp/loosen the staple bolt structure of guiding axle.
Preferably, the hoop device is a hydraulic tensioning sleeve.
Preferably, a double screw nut is further included, replacing the screw nut.
Preferably, the lifting device also comprises a wedge-shaped lantern ring, a wedge-shaped lifting block and a lifting bracket; the section of the wedge-shaped lantern ring is in a wedge shape with a wide upper part and a flat lower part, the wedge-shaped lifting block is an inverted U-shaped block, the section of the wedge-shaped lifting block is in an inverted wedge shape corresponding to the wedge-shaped lantern ring, and the wedge-shaped lifting block is matched with the wedge-shaped lantern ring and then sleeved on the screw rod and located between the double screw rod nuts; the upper end face of the wedge-shaped lifting block is provided with a threaded hole, the lifting support is positioned above the wedge-shaped lifting block, and a lifting bolt penetrates through the lifting support and is screwed into the threaded hole.
Preferably, still include lead screw protective sheath and a pair of stroke sensor, lead screw protective sheath is established the lead screw, a pair of stroke sensor follows the direction of feed of slip table sets up the front side and the rear side of slip table.
The utility model also discloses a test device for the tire dynamics and modes, which comprises at least one vibration excitation seat, wherein the vibration excitation seat is driven by the screw rod feeding device, and the screw rod feeding device is matched with the screw rod protection device.
After adopting the technical scheme, compared with the background technology, the utility model has the following advantages:
1. the guide shaft parallel to the screw rod is arranged, the sliding sleeve sliding along the sliding table and the hoop device following the sliding sleeve are arranged on the guide shaft, the guide shaft can be hooped by the hoop device when the sliding table of the screw rod feeding device is fed to a specified position, and the guide shaft bears heavy axial force to avoid the damage of the screw rod feeding device.
2. The utility model adopts the hydraulic tensioning sleeve, which can realize the automatic high-load hoop;
3. the common screw rod nut in the screw rod feeding device is replaced by the double screw rod nut, so that the contact area between the screw rod and the nut of the screw rod is increased, and the screw rod can bear higher axial and radial loads;
4. the double-screw nut automatic gap eliminating device is provided with a wedge-shaped lantern ring, a wedge-shaped lifting block and a lifting support, the wedge-shaped lifting block is lifted by the lifting support and matched with the wedge-shaped lantern ring, so that the automatic gap elimination of the double-screw nut is completed, and the further damage of a screw rod caused by the gap generated between the double-screw nut and the screw rod due to loss is avoided;
5. the utility model is provided with a screw rod protective sleeve and a stroke sensor, wherein the screw rod protective sleeve protects the screw rod and prevents the screw rod from being stained; the stroke sensor protects the screw rod protective sleeve, so that the screw rod protective sleeve is prevented from being damaged during overtravel;
6. the utility model applies the screw rod protection device to the tire dynamic and modal test equipment, and solves the problem of axial heavy load faced by the vibration excitation seat feeding device.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a disassembled schematic view of the present invention;
FIG. 3 is a schematic view of a lead screw feeding apparatus according to the present invention;
FIG. 4 is a cross-sectional view of the lead screw feeding apparatus of the present invention;
fig. 5 is a schematic view of a tire dynamic and modal testing apparatus employing a lead screw protection device.
Description of reference numerals:
the screw rod feeding device 100, the screw rod 110, the screw rod nut 120, the sliding table 130 and the sliding table 140;
the screw rod protection device 200, the guide shaft 210, the sliding sleeve 220 and the hoop device 230; the wedge-shaped sleeve ring 240, the wedge-shaped lifting block 250, a threaded hole 251, a lifting bolt 252, a lifting bracket 260, a screw rod protective sleeve 270 and a stroke sensor 280;
a vibration seat 300.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Example 1
The utility model discloses a screw rod protection device, which is applied to a screw rod feeding device, in particular to a screw rod feeding device bearing axial heavy load.
Referring to fig. 1 and 2, the screw feeding device 100 includes a screw 110, a screw nut 120, a sliding table 130, and a sliding table 140. The slide table 130 carries the slide table 140. The feed screw nut 120 is connected to the slide table 140, and drives the slide table 140 to feed by the drive of the feed screw 110.
Referring to fig. 1 and 2, the lead screw protection device 200 includes a guide shaft 210, a sliding sleeve 220 and a hoop 230. The guide shaft 210 is fixed in parallel to one side of the screw rod 110. The sliding sleeve 220 is sleeved on the guide shaft 210 and rigidly connected with the sliding table 140 to move along with the sliding table 140. Along the feeding direction of the sliding table 140, the hoop device 230 is sleeved on the guide shaft 210 and located at the rear side of the sliding sleeve 220, the hoop device 230 slides along with the sliding sleeve 220 through an L-shaped shifting piece, and the hoop device 230 has a hoop structure capable of manually or automatically tightening/loosening the guide shaft 210.
In this way, when the screw feeding device 100 is fed to a specific position, the hoop device 230 hoops the guide shaft 210, so that the axial force received by the screw 110 is transmitted to the guide shaft 210 and received by the guide shaft 210.
When applied to a fully automatic control scenario, the hoop 230 may be a hydraulic tensioning sleeve. The working principle of the hoop device is as follows: after a certain amount of hydraulic medium is injected into a closed double-layer shaft sleeve, when the hydraulic medium in the shaft sleeve is subjected to pressure from a screw or an external working pump, the oil pressure in the cavity is increased, and the thin wall of the cavity of the shaft sleeve is uniformly expanded inwards and outwards after being subjected to the pressure, so that a fit clearance is eliminated, and therefore uniform surface pressure is generated on the shaft and the hub which are in contact with the thin wall of the cavity of the shaft sleeve, and the clasping connection is realized.
Meanwhile, in the utility model, the double lead screw nuts replace the traditional lead screw nuts, namely the lead screw nuts 120 are arranged in pairs, so that the bearing capacity of the lead screw 110 is improved. Referring to fig. 3 and 4, the two lead screw nuts 120 are oppositely disposed and screwed on the lead screw 110. The section of the wedge-shaped sleeve ring 240 is in a wedge shape with a wide upper part and a flat lower part, and one end of the wedge-shaped sleeve ring is provided with a round sleeve to be sleeved with the end part of a screw nut and is fastened through a fastening bolt. The wedge-shaped lifting block 250 is an inverted U-shaped block (the bottom is not sealed, so that the wedge-shaped lifting block is convenient to lift upwards), the section of the wedge-shaped lifting block 250 is inverted wedge-shaped corresponding to the wedge-shaped lantern ring 240, the wedge-shaped lifting block 250 is matched with the wedge-shaped lantern ring 240 and then sleeved on the lead screw 110 of the horizontal lead screw sliding table 130, and the wedge-shaped lifting block is located between the double lead screw nuts. The upper end face of the wedge-shaped pulling block 250 is provided with a threaded hole 251, the pulling support 260 is positioned above the wedge-shaped pulling block 250, a pulling bolt penetrates through the pulling support 260 and is screwed into the threaded hole, and the pre-tightening of the double-lead screw nut and the clearance elimination can be completed through the pulling of the pulling bolt. In this embodiment, the lifting bracket 260 serves as an intermediate connector between the dual lead screw nut and the sliding table 140.
In order to protect the lead screw 110 from dust, the lead screw protection device 200 further includes a lead screw protection sleeve 270 and a pair of stroke sensors 280, the lead screw protection sleeve 270 is sleeved on the lead screw 110, and the pair of stroke sensors 280 are disposed on the front side and the rear side of the sliding table 140 along the feeding direction of the sliding table 140, so as to prevent the sliding table 140 from excessively extruding the lead screw protection sleeve 270.
Example 2
The utility model also discloses a test device for the dynamic and modal states of the tire, which comprises at least one vibration excitation seat 300, wherein the vibration excitation seat 300 is driven by the screw rod feeding device 100, and the screw rod feeding device 100 is matched with the screw rod protection device 200 as described in embodiment 1.
In this embodiment, the hoop device 230 is a hydraulic expansion sleeve to realize an automatic hoop guide shaft.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a lead screw protection device, the complete set uses in lead screw feeding device, lead screw feeding device includes lead screw, screw-nut and slip table, its characterized in that: comprises a guide shaft, a sliding sleeve and a hoop device; the guide shaft is fixed on one side of the screw rod in parallel; the sliding sleeve is sleeved on the guide shaft and is fixedly connected with the sliding table; follow the direction of feed of slip table, the staple bolt ware is established on the guiding axle and be located the rear side of sliding sleeve, the staple bolt ware follows the sliding sleeve slides together, the staple bolt ware has can be manual or automatic cramp/loosen the staple bolt structure of guiding axle.
2. The screw guard of claim 1, wherein: the hoop device is a hydraulic tensioning sleeve.
3. The screw guard of claim 1, wherein: the double-screw nut is used for replacing the screw nut.
4. A screw guard as claimed in claim 3, wherein: the lifting device also comprises a wedge-shaped lantern ring, a wedge-shaped lifting block and a lifting bracket; the section of the wedge-shaped lantern ring is in a wedge shape with a wide upper part and a flat lower part, the wedge-shaped lifting block is an inverted U-shaped block, the section of the wedge-shaped lifting block is in an inverted wedge shape corresponding to the wedge-shaped lantern ring, and the wedge-shaped lifting block is matched with the wedge-shaped lantern ring and then sleeved on the screw rod and located between the double screw rod nuts; the upper end face of the wedge-shaped lifting block is provided with a threaded hole, the lifting support is positioned above the wedge-shaped lifting block, and a lifting bolt penetrates through the lifting support and is screwed into the threaded hole.
5. The screw guard of claim 1, wherein: still include lead screw protective sheath and a pair of stroke sensor, lead screw protective sheath cover is established the lead screw, a pair of stroke sensor is followed the direction of feed of slip table sets up the front side and the rear side of slip table.
6. Tire developments and modal test equipment includes at least one excitation seat, its characterized in that: the excitation seat is driven by a screw rod feeding device, and the screw rod feeding device is matched with a screw rod protection device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121812109.7U CN215980680U (en) | 2021-08-04 | 2021-08-04 | Lead screw protection device and tire dynamic and modal test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121812109.7U CN215980680U (en) | 2021-08-04 | 2021-08-04 | Lead screw protection device and tire dynamic and modal test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215980680U true CN215980680U (en) | 2022-03-08 |
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ID=80513891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121812109.7U Active CN215980680U (en) | 2021-08-04 | 2021-08-04 | Lead screw protection device and tire dynamic and modal test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215980680U (en) |
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2021
- 2021-08-04 CN CN202121812109.7U patent/CN215980680U/en active Active
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