Oil-free supporting sliding assembly with water cooling function and test bed
By setting cooling channels and introducing cooling water inside the guide shaft, the problem of thermal failure of the horizontal slide table at high temperatures is solved, achieving efficient heat dissipation and ensuring the best working performance and vibration control accuracy of the sliding components.
Patent Information
- Application Number
- CN202520454829.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing horizontal slides suffer from thermal failure under extreme conditions of high frequency, large amplitude, and long-term continuous operation, resulting in large deviations in motion accuracy and distortion of vibration transmission characteristics. Traditional heat dissipation solutions cannot meet the requirements for efficient heat dissipation at high temperatures.
Cooling channels are provided inside the guide shaft, and cooling water is introduced into the cooling channels to cool the guide shaft, bearing housing, and bushing. Thermally conductive materials and materials such as stainless steel or aluminum alloy are used to improve heat dissipation efficiency.
It achieves effective cooling of the guide shaft, bearing housing and bushing at high temperatures, keeps the sliding components at the optimal operating temperature, and ensures the stability of motion accuracy and vibration transmission characteristics.
Smart Images
Figure CN223635145U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of oil-free support sliding assembly with water cooling and test bed. BACKGROUND
[0002] Horizontal sliding table as the core transmission component of vibration test system, is widely used in reliability test in the fields of aerospace, automobile parts, electronic equipment etc..It simulates the horizontal direction vibration load that measured object bears under actual working condition through reciprocating linear motion, and has irreplaceable effect for verifying product anti-vibration performance. However, with the continuous improvement of test precision and load capacity requirement of modern industry, the traditional horizontal sliding table exposes significant thermal failure problem under the extreme working condition of high frequency, large amplitude, long time continuous work.
[0003] Specifically, when the sliding table actuator drives heavy measured object exceeding rated load, the conversion efficiency of mechanical energy to heat energy sharply increases. High temperature environment can trigger multiple chain reactions: first, the pre-tightening force of linear guide will produce abnormal change due to the difference of material thermal expansion coefficient, which causes the motion precision deviation to be larger, and cannot meet the vibration control requirement. Secondly, the continuous thermal stress accumulation can cause the creep deformation of sliding table matrix, and after high temperature work of more than 300 hours, the vibration transmission characteristic is distorted.
[0004] The passive heat dissipation scheme generally used in the industry has significant defects: the thermal resistance of natural convection heat dissipation is as high as 1.5-2.0℃ / W, which is completely invalid in the scene of more than 500W heat power consumption. While the external air cooling device can provide forced convection heat dissipation of about 0.5℃ / W, but it needs to increase the installation space of more than 300mm, which seriously restricts the layout design of compact vibration table.
[0005] Therefore, it is necessary to improve the existing oil-free support sliding assembly to solve the above problems. CONTENT OF THE UTILITY MODEL
[0006] The utility model aims at providing an oil-free support sliding assembly with water cooling to solve the problem of poor working effect of existing sliding table under high temperature.
[0007] To achieve the above purpose, the utility model provides an oil-free support sliding assembly with water cooling, which comprises a support seat, a guide shaft arranged on the support seat, and a bearing seat sleeved on the guide shaft. The bearing seat is slidably arranged along the axial direction of the guide shaft. The guide shaft is provided with a cooling flow channel along the axial direction, and the guide shaft is made of heat-conducting material.
[0008] As a further improvement of the utility model, the cooling flow channel is coaxially arranged with the guide shaft and penetrates the guide shaft along the axial direction.
[0009] As a further improvement of the utility model, the both ends of the guide shaft are provided with joint holes for communicating with the cooling flow channel.
[0010] As a further improvement of the utility model, the support seat has a giving slot with an opening facing upward, and the bearing seat is at least partially accommodated in the giving slot.
[0011] As a further improvement of the utility model, the oil-free support sliding assembly with water cooling further comprises a shaft sleeve arranged radially between the guide shaft and the bearing seat, and the shaft sleeve is fixed with the bearing seat.
[0012] As a further improvement of the utility model, the shaft sleeve is made of engineering plastic or copper alloy material.
[0013] As a further improvement of the utility model, the guide shaft, the bearing seat and the support seat are made of stainless steel or aluminum alloy treated by micro-arc oxidation.
[0014] The utility model further provides a test bench, the test bench includes base, a plurality of oil-free support sliding assemblies with water cooling like above, support mesa, the oil-free support sliding assembly with water cooling is installed on the base, the support mesa is installed above the oil-free support sliding assembly with water cooling, and the bearing seat of the oil-free support sliding assembly with water cooling is fixedly connected with the support mesa.
[0015] As a further improvement of the utility model, the plurality of oil-free support sliding assemblies with water cooling are arranged in a rectangular array.
[0016] As a further improvement of the utility model, the base is provided with a cooling pipeline, and the test bench further comprises a connecting pipe for connecting the cooling pipeline and the cooling flow channel.
[0017] The oil-free support sliding assembly with water cooling and the test bench have the following beneficial effects: the cooling flow channel is arranged in the guide shaft, so that the guide shaft, the bearing seat and the shaft sleeve can be sufficiently cooled, the oil-free support sliding assembly with water cooling can be maintained at the optimal working temperature, and the optimal working performance is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.
[0019] Figure 1 is the three-dimensional structure schematic view of the test bench of the utility model;
[0020] Figure 2 is a structural schematic view of the test bench without a supporting table surface of the utility model;
[0021] Figure 3 is a top view structural schematic view of the test bench of the utility model;
[0022] Figure 4 is Figure 3 is a sectional view structural schematic view in A-A direction;
[0023] Figure 5 is a three-dimensional structural schematic view of the oil-free supporting sliding assembly with water cooling of the utility model;
[0024] Figure 6 is a side surface partial sectional view structural schematic view of the oil-free supporting sliding assembly with water cooling of the utility model. DETAILED DESCRIPTION
[0025] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative efforts belong to the protection scope of the utility model.
[0026] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0028] As Figures 1 to 6As shown, the test bench 100 of the utility model includes base 1, a plurality of oil-free support sliding assembly with water cooling 2, support table 3, connecting pipe 4 and protective box.
[0029] The oil-free support sliding assembly with water cooling 2 is installed on the base 1.
[0030] In this embodiment, the plurality of oil-free support sliding assembly with water cooling 2 is arranged in a rectangular array.
[0031] The support table 3 is installed above the oil-free support sliding assembly with water cooling 2, and the support table 3 is used to install test pieces.
[0032] As shown, Figures 5 to 6 The oil-free support sliding assembly with water cooling 2 includes support seat 21, guide shaft 22 arranged on the support seat 21, bearing seat 23 sleeved on the guide shaft 22, shaft sleeve 24 arranged between the guide shaft 22 and the bearing seat 23 in the radial direction.
[0033] The guide shaft 22, the bearing seat 23 and the support seat 21 are made of stainless steel or aluminum alloy treated by micro-arc oxidation. Such materials make the oil-free support sliding assembly with water cooling 2 resistant to low air pressure, high and low temperature, corrosion environment, etc.
[0034] The bearing seat 23 of the oil-free support sliding assembly with water cooling 2 is fixedly connected with the support table 3.
[0035] The bearing seat 23 is slidably arranged along the axial direction of the guide shaft 22, and the guide shaft 22 is provided with a cooling flow channel 221 in the axial direction.
[0036] The base 1 is provided with a cooling pipeline 11, and the connecting pipe 4 is used to connect the cooling pipeline 11 and the cooling flow channel 221.
[0037] In this embodiment, the cooling pipeline 11 includes a water inlet pipeline 12 and a water outlet pipeline 13. The water inlet pipeline 12 includes a first inlet 121 and a first outlet 122. The first inlet 121 is located at one end of the base 1 in the horizontal direction. The first outlet 122 is connected to the first inlet 121 and is located above the base 1 in the vertical direction. The water outlet pipeline 13 includes a second inlet 131 and a second outlet 132. The second outlet 132 is located at one end of the base 1 in the horizontal direction. The second inlet 131 is connected to the second outlet 132 and is located above the base 1 in the vertical direction. The water inlet pipeline 12 is used to introduce cooling water, and the water outlet pipeline 13 is used to discharge cooling water. In this embodiment, the first inlet 121 and the second outlet 132 are exposed outside the protective box, and the first outlet 122 and the first inlet 121 are located inside the protective box.
[0038] The connecting pipe 4 includes a water inlet connecting pipe 41, a water outlet connecting pipe 42, and a middle connecting pipe 43. The water inlet connecting pipe 41 is used to connect the first outlet 122 of the water inlet pipeline 12 and the cooling flow channel 221 of the oil-free support sliding assembly 2 with water cooling in the same row. The middle connecting pipe 43 is used to connect the cooling flow channels 221 of the oil-free support sliding assemblies 2 in the same column. The water outlet connecting pipe 42 is used to connect the cooling flow channel 221 of the oil-free support sliding assembly 2 and the second inlet 131 of the water outlet pipeline 13.
[0039] The cooling water flows as follows: the cooling water enters the water inlet pipeline 12 from the first inlet 121, enters the first outlet 122, and then connects the cooling flow channels 221 of the oil-free support sliding assemblies 2 in the same row through the water inlet connecting pipe 41. After cooling the oil-free support sliding assemblies 2 through the cooling flow channels 221, the cooling water enters the cooling flow channels 221 in the same column in sequence through the middle connecting pipe 43, and finally enters the second inlet 131 from the water outlet connecting pipe 42 and is discharged from the second outlet 132.
[0040] The cooling flow channel 221 is coaxially arranged with the guide shaft 22 and axially penetrates the guide shaft 22. In this embodiment, the cooling flow channel 221 is arranged in the middle of the guide shaft 22, so that the bearing seat 23, the guide shaft 22, and the shaft sleeve 24 can be sufficiently cooled. The coaxial penetration type flow channel makes the cooling water form a piston type laminar flow, which can improve the heat exchange efficiency and reduce the flow resistance compared with a serpentine flow channel, and ensures stable pressure drop under large flow conditions.
[0041] The guide shaft 22 is provided with a joint hole 222 at both ends for communication with the cooling flow channel 221. The joint hole 222 is used to connect with the connecting pipe 4.
[0042] The support seat 21 has a clearance slot 211 with an opening facing upward, and the bearing seat 23 is at least partially accommodated in the clearance slot 211. In the embodiment, the bearing seat 23 comprises an upper seat body 231 located above the clearance slot 211 and a lower seat body 232 located in the clearance slot 211. In the embodiment, the axial length of the lower seat body 232 is less than the axial length of the upper seat body 231, so that the bearing seat 23 has a longer axial movement range,
[0043] The shaft sleeve 24 is fixed with the bearing seat 23 and in contact with the guide shaft 22. The inner surface of the shaft sleeve 24 is in contact with the outer surface of the guide shaft 22, and the heat is conducted through the guide shaft 22 to achieve indirect cooling. In the embodiment, the number of the shaft sleeve 24 corresponding to each bearing seat 23 is two, and the shaft sleeve 24 is fixed with the lower seat body 232 of the bearing seat 23 in the axial direction. The shaft sleeve 24 is made of engineering plastic or copper alloy material. The cooling water in the cooling flow channel 221 can cool the shaft sleeve 24. The shaft sleeve 24 made of engineering plastic has better working performance, but is easily affected by high temperature. In the embodiment, the cooling flow channel 221 is arranged to sufficiently cool the shaft sleeve 24, so that the shaft sleeve 24 can maintain the best working state, and the requirement for the test environment is reduced.
[0044] The oil-free support sliding assembly 2 with water cooling and the test bench 100 can sufficiently cool the guide shaft 22, the bearing seat 23 and the shaft sleeve 24 by arranging the cooling flow channel 221 in the guide shaft 22, so that the oil-free support sliding assembly 2 with water cooling can maintain the best working temperature, thereby ensuring the best working performance.
[0045] The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.
[0046] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the utility model patent. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. An oil-free supported slide assembly with water cooling, characterized by: The oil-free support sliding assembly with water cooling comprises a support base, a guide shaft arranged on the support base, and a bearing seat sleeved on the guide shaft, wherein the bearing seat is arranged slidably along the axial direction of the guide shaft, the guide shaft is provided with a cooling flow channel along the axial direction, and the guide shaft is made of a heat-conducting material.
2. The oil-free supported slide assembly with water cooling of claim 1, wherein: The cooling flow channel is coaxially arranged with the guide shaft and penetrates the guide shaft along the axial direction.
3. The oil-free supported slide assembly with water cooling of claim 2, wherein: The two ends of the guide shaft are provided with joint holes for communicating with the cooling flow channel.
4. The oil-free supported slide assembly with water cooling of claim 1, wherein: The support base is provided with a clearance slot with an upward opening, and the bearing seat is at least partially accommodated in the clearance slot.
5. The oil-free supported slide assembly with water cooling according to claim 1 or 4, characterized in that: The oil-free support sliding assembly with water cooling further comprises a shaft sleeve arranged radially between the guide shaft and the bearing seat, and the shaft sleeve is fixed with the bearing seat.
6. The oil-free supported slide assembly with water cooling of claim 5, wherein: The shaft sleeve is made of an engineering plastic or a copper alloy material.
7. The oil-free supported slide assembly with water cooling of claim 1, wherein: The guide shaft, the bearing seat and the support base are made of stainless steel or an aluminum alloy subjected to micro-arc oxidation treatment.
8. A test bench, characterized in that: The test bench comprises a base, a plurality of oil-free support sliding assemblies with water cooling, and a support table top, wherein the oil-free support sliding assemblies with water cooling are mounted on the base, the support table top is arranged above the oil-free support sliding assemblies with water cooling, and the bearing seats of the oil-free support sliding assemblies with water cooling are fixedly connected with the support table top.
9. Test bench according to claim 8, characterized in that The plurality of oil-free support sliding assemblies with water cooling are arranged in a rectangular array.
10. The test stand of claim 8, wherein: The base is provided with a cooling pipeline, and the test bench further comprises a connecting pipe for connecting the cooling pipeline and the cooling flow channel.