CN115436006B - Anti-bouncing locking sliding support device with heat insulation function - Google Patents
Anti-bouncing locking sliding support device with heat insulation function Download PDFInfo
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- CN115436006B CN115436006B CN202211314455.1A CN202211314455A CN115436006B CN 115436006 B CN115436006 B CN 115436006B CN 202211314455 A CN202211314455 A CN 202211314455A CN 115436006 B CN115436006 B CN 115436006B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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Abstract
The invention belongs to the technical field of wind tunnel test devices, and discloses an anti-bouncing locking sliding support device with a heat insulation function. The anti-bouncing locking sliding support device comprises a welding support, a tensioning screw, a heat insulation block, a sliding sheet, a base, a connecting plate, a connecting pin, a pressing block screw, a pressing block, a positioning screw, a supporting block, an installation block, an anti-bouncing block pressing screw, an anti-bouncing block and an adjusting base plate. The anti-bouncing locking sliding supporting device solves the problems of large-scale low-temperature equipment supporting and shrinkage deformation compensation, and reduces the structural stress level; the heat insulation module is utilized to block the transmission and dissipation of cold energy generated by a steel structure, so that the cold energy loss is reduced, and the test operation cost of large-scale low-temperature equipment is effectively reduced; through the organic combination of the deformation compensation function, the anti-bouncing function and the locking function, the test safety performance of the large-scale low-temperature equipment is improved, and the structure of the large-scale low-temperature equipment is more compact.
Description
Technical Field
The invention belongs to the technical field of wind tunnel test devices, and particularly relates to an anti-bouncing locking sliding support device with a heat insulation function.
Background
The conventional wind tunnel equipment supporting device mainly comprises two modes of fixed support and sliding support:
firstly, the fixed bolster is used for fixed important section or device, in whole wind-tunnel return circuit, some important sections or devices need to be fixed, avoid important section or device to remove and cause the wind-tunnel overall arrangement to change, and simultaneously, the fixed bolster can also prevent important section or device to produce the vibration when the air current flows, avoids the vibration to cause important section or device function unstable, the phenomenon of the destruction of structure and function appears even.
And secondly, the sliding support is adopted, in a typical wind tunnel loop shaped like a Chinese character 'hui', four side paths of a wind tunnel cause thermal expansion and cold contraction deformation of a steel structure tunnel body along four axes due to temperature change, and if the fixed support is adopted, the transition constraint causes great stress to be generated at the fixed connection part of the structure, so that the structure is damaged. Therefore, a one-way sliding support moving along the axial direction of the hole body needs to be arranged to compensate the temperature difference deformation of the hole body in the axial direction; and bidirectional sliding supports are required to be arranged at four corner positions to compensate the temperature difference deformation of the hole body in the two axial directions.
At present, a conventional wind tunnel equipment supporting device is not suitable for supporting requirements of large-scale low-temperature equipment, and an anti-jumping locking sliding supporting device with a heat insulation function is urgently needed to be developed.
Disclosure of Invention
The invention aims to solve the technical problem of providing an anti-bouncing locking sliding supporting device with a heat insulation function.
The invention discloses an anti-bouncing locking sliding supporting device with a heat insulation function, which is characterized by comprising a welding support, a tightening screw, a heat insulation block, a sliding sheet, a base, a connecting plate, a connecting pin, a compression screw, a compression block, a positioning screw, a supporting block, an installation block, an anti-bouncing block compression screw, an anti-bouncing block and an adjusting base plate;
the welding support, the heat insulation block and the sliding block are sequentially connected from top to bottom and are tightened into a combined body through a tightening screw; the base is fixed on the ground through a connecting plate; the sliding sheet is arranged in a groove on the upper surface of the base; the combined body is placed on the sliding sheet; the combined body is provided with a vertical pin hole which penetrates through the welding support and the heat insulation block from top to bottom, the bottom surface of the vertical pin hole is positioned in the sliding block, the connecting pin is inserted into the pin hole from top to bottom, and the middle section of the connecting pin is provided with a horizontal internal threaded hole; the mounting block is welded on the base, a vertical blind hole is formed in the mounting block, and the supporting block is inserted into the blind hole of the mounting block;
the front end of the positioning screw is provided with an external thread matched with the internal thread hole of the connecting pin, and the middle section of the positioning screw is provided with an annular groove; the positioning screw horizontally penetrates through the supporting block and the mounting block, is inserted into the pin hole from the outside of the combined body and is connected with the internal thread hole of the connecting pin; adjusting the axial positioning position of a positioning screw, placing the horizontal section of an L-shaped pressing block on the upper surface of a supporting block, inserting the vertical section of the L-shaped pressing block into a gap between the supporting block and an installation block, inserting a spigot at the lower end of the vertical section of the L-shaped pressing block into an annular groove of the positioning screw, and locking the pressing block through a pressing screw penetrating through the top of the horizontal section of the L-shaped pressing block;
the two sides of the sliding block are provided with L-shaped anti-bouncing blocks, the horizontal section of each L-shaped anti-bouncing block is pressed on the upper surface of the sliding block, the bottom surface of the vertical section of each L-shaped anti-bouncing block corresponds to the connecting surface of the upper surface of the base, and an adjusting base plate is inserted between the bottom surface and the connecting surface; the anti-bouncing block is fixed by an anti-bouncing block compression screw which penetrates through the anti-bouncing block and the adjusting base plate from top to bottom.
Furthermore, the material of the sliding block is metal comprising 304 stainless steel; the sliding sheet is made of a self-lubricating material with a low friction coefficient and containing polytetrafluoroethylene; the smooth finish of the contact surface of the sliding block and the sliding sheet is Ra0.8 or more.
Further, the adjusting shim plate comprises a series of adjusting shim plates with different thicknesses, and the adjusting shim plates are assembled and installed according to requirements.
Furthermore, a gap between the end surface of the horizontal section of the L-shaped anti-bouncing block and the side wall surface of the heat insulation block is used for limiting the sliding of the anti-bouncing locking sliding support device, so that anti-bouncing in the vertical direction is realized; the position of the connecting pin penetrating through the vertical pin holes in the welding support, the heat insulation block and the sliding block is adjusted through the positioning screw rod, a sliding gap is prefabricated, and sliding limiting is achieved.
The anti-bouncing locking sliding supporting device with the heat insulation function solves the problems of large-scale low-temperature equipment supporting and shrinkage deformation compensation, and reduces the structural stress level; the heat insulation module is utilized to block the transmission and dissipation of cold energy generated by a steel structure, so that the cold energy loss is reduced, and the test operation cost of large-scale low-temperature equipment is effectively reduced; through the organic combination of the deformation compensation function, the anti-bouncing function and the locking function, the test safety performance of the large-scale low-temperature equipment is improved, and the structure of the large-scale low-temperature equipment is more compact.
Drawings
FIG. 1 is a schematic structural view (front view) of an anti-jump locking sliding support with thermal insulation function of the present invention;
FIG. 2 isbase:Sub>A schematic view (A-A section) of the anti-jump locking sliding support device with heat insulation function of the present invention;
fig. 3 is a schematic diagram of the application of the anti-jump locking sliding support device with the heat insulation function in large-scale cryogenic equipment.
In the figure, 1, a support is welded; 2. tightening the screw; 3. a heat insulating block; 4. a slider; 5. sliding blades; 6. a base; 7. a connecting plate; 8. a connecting pin; 9. a compression screw; 10. a compression block; 11. positioning a screw rod; 12. a support block; 13. mounting blocks; 14. the anti-jump block compression screw; 15. an anti-jump block; 16. adjusting the base plate; 17. a large cryogenic equipment support; 18. a hole body a;19. a hole body b;20. a fixed flange a;21. and (5) fixing the flange b.
Detailed Description
The present invention is described in detail below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, the anti-bouncing locking sliding support device with the thermal insulation function of the present embodiment includes a welding support 1, a tightening screw 2, a thermal insulation block 3, a slider 4, a sliding piece 5, a base 6, a connecting plate 7, a connecting pin 8, a compression screw 9, a compression block 10, a positioning screw 11, a support block 12, an installation block 13, an anti-bouncing block compression screw 14, an anti-bouncing block 15, and an adjustment shim plate 16.
After the welding support 1, the heat insulation block 3 and the sliding block 4 are combined and positioned, the tensioning screw 2 is tensioned, so that the cold energy of the welding support 1 is effectively isolated from being transferred to other steel structure parts; the sliding sheet 5 is arranged in the base 6 groove; the base 6 is fixed on the ground through a connecting plate 7; the wind tunnel body and the welding support 1 as moving components in the contraction process can transversely move on a sliding surface where the sliding block 4 and the sliding sheet 5 are contacted so as to compensate the contraction deformation of the tunnel body. The connecting pin 8, the compression screw 9, the compression block 10, the positioning screw 11, the supporting block 12 and the mounting block 13 mainly play a role in locking the supporting device, the mounting block 13 is fixed on the base 6 in a welding mode, and other parts are fixed in a connecting mode. In the process of cooling the wind tunnel body, the parts are not assembled in place firstly, and the parts are assembled after the wind tunnel contracts and deforms in place and the size of L in the drawing is not changed any more. Inserting the connecting pin 8 into the pin holes of the welding support 1 and the sliding block 4; the supporting block 12 is inserted into the mounting block 13; positioning screw 11 passes supporting shoe 12 and installation piece 13 through-hole, is connected through front end screw thread and connecting pin 8 upper thread hole, and 11 axial positioning positions of adjustment positioning screw treat that compact heap 10 lower extreme tang can easily insert, and the housing screw 9 at locking compact heap 10 top prevents positioning screw 11 at the vibration in-process roll-off. The sliding direction of the supporting device is locked through the positioning screw rod 11, so that the rigid connection of the tunnel body structure in the wind tunnel test process is ensured, and the occurrence of large vibration is avoided.
The anti-jumping blocks 15 are mounted on two sides of the sliding block 4 to limit the hole structure to jump in the vertical direction, the anti-jumping blocks 15 are mounted on the base 6 through the anti-jumping block compression screws 14, the upper surface of the sliding block 4 is limited to jump in the vertical direction through the seam allowance, the adjusting base plate 16 is arranged between the anti-jumping blocks 15 and the base 6 connecting face, and the jumping amount of the hole structure in the vertical direction is controlled by repairing the thickness of the adjusting base plate 16.
As shown in fig. 3, the anti-jump locking sliding support device with thermal insulation function of the present embodiment is applied to the corner of the large-scale cryogenic equipment cavern. The large-scale low-temperature equipment is introduced with low-temperature nitrogen of-196 degrees as a flowing medium to carry out a blowing test in the test process. The low-temperature nitrogen and the steel structure hole body exchange heat, so that the temperature of the steel structure hole body is gradually reduced to-196 ℃, the temperature reduction simultaneously causes the material shrinkage of the steel structure hole body, the material shrinkage is shown in a hole body loop, namely, the size of the axis (X axis and Y axis) of the hole body is shortened, the X axis and the Y axis respectively shrink and shorten towards a fixed flange b20 and a fixed flange a21, the intersection point O of the X axis and the Y axis moves along the Z direction in the figure, in order to reduce the number of the supporting devices, a group of anti-jump locking sliding supporting devices are arranged at two axis positions, the anti-jump locking sliding supporting devices are installed on a large-scale low-temperature equipment supporting device 17, the anti-jump locking sliding supporting device slides along the Z direction to simultaneously compensate the displacement of the hole body a18 and the hole body b19 in two horizontal directions, and the displacement is measured in the Z direction: 10 mm-15 mm, and the displacement compensation range of the anti-jumping locking sliding support device is 0 mm-30 mm, so that the compensation requirement for the shrinkage of the large-scale low-temperature equipment hole body is met. Meanwhile, through measurement, the temperature of the welding support 1 is-60 degrees to-70 degrees, the temperature of the anti-bouncing locking sliding support device is maintained between 20 degrees and 25 degrees, the cold energy of the large-scale low-temperature equipment hole body is not transmitted to the anti-bouncing locking sliding support device, and the low-temperature energy dissipation is effectively isolated.
Although the embodiments of the present invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, but it can be fully applied to various fields suitable for the present invention. Additional modifications and refinements will readily occur to those skilled in the art without departing from the principles of the present invention, and the present invention is not limited to the specific details and illustrations shown and described herein.
Claims (4)
1. The anti-bouncing locking sliding support device with the heat insulation function is characterized by comprising a welding support (1), a tightening screw (2), a heat insulation block (3), a sliding block (4), a sliding piece (5), a base (6), a connecting plate (7), a connecting pin (8), a compression screw (9), a compression block (10), a positioning screw (11), a supporting block (12), an installation block (13), an anti-bouncing block compression screw (14), an anti-bouncing block (15) and an adjusting base plate (16);
the welding support (1), the heat insulation block (3) and the sliding block (4) are sequentially connected from top to bottom and are tensioned into a combined body through the tensioning screw (2); the base (6) is fixed on the ground through a connecting plate (7); the sliding sheet (5) is arranged in a groove on the upper surface of the base (6); the assembly is placed on the sliding sheet (5); the combined body is provided with a vertical pin hole which penetrates through the welding support (1) and the heat insulation block (3) from top to bottom, the bottom surface of the vertical pin hole is positioned in the sliding block (4), the connecting pin (8) is inserted into the pin hole from top to bottom, and the middle section of the connecting pin (8) is provided with a horizontal internal threaded hole; the mounting block (13) is welded on the base (6), a vertical blind hole is formed in the mounting block (13), and the supporting block (12) is inserted into the blind hole of the mounting block (13);
the front end of the positioning screw rod (11) is provided with an external thread matched with the internal thread hole of the connecting pin (8), and the middle section of the positioning screw rod (11) is provided with an annular groove; the positioning screw rod (11) horizontally penetrates through the supporting block (12) and the mounting block (13), is inserted into the pin hole from the outside of the combined body, and is connected with the internal thread hole of the connecting pin (8); adjusting the axial positioning position of a positioning screw rod (11), placing the horizontal section of an L-shaped pressing block (10) on the upper surface of a supporting block (12), inserting the vertical section of the L-shaped pressing block (10) into a gap between the supporting block (12) and an installation block (13), inserting a spigot at the lower end of the vertical section of the L-shaped pressing block (10) into an annular groove of the positioning screw rod (11), and locking the pressing block (10) through a pressing screw (9) penetrating through the top of the horizontal section of the L-shaped pressing block (10);
l-shaped anti-bouncing blocks (15) are mounted on two sides of the sliding block (4), the horizontal section of each L-shaped anti-bouncing block (15) is pressed on the upper surface of the sliding block (4), the bottom surface of the vertical section of each L-shaped anti-bouncing block (15) corresponds to the connecting surface of the upper surface of the base (6), and an adjusting cushion plate (16) is inserted between the bottom surface and the connecting surface; the anti-jump block (15) is fixed through an anti-jump block compression screw (14) which penetrates through the anti-jump block (15) and the adjusting base plate (16) from top to bottom;
the anti-jumping locking sliding support device is installed on a large-scale low-temperature equipment support device (17), and can slide along the Z direction to simultaneously compensate displacement of a hole body a (18) and a hole body b (19) in two horizontal directions, and the wind tunnel body and the welding support (1) are used as moving components in the contraction process to transversely move on a sliding surface where the sliding block (4) and the sliding piece (5) are in contact, so as to compensate contraction deformation of the wind tunnel body.
2. The anti-jump locking sliding support device with heat insulation function as claimed in claim 1, wherein the slider (4) is made of metal including 304 stainless steel; the sliding sheet (5) is made of a self-lubricating material with a low friction coefficient and containing polytetrafluoroethylene; the smooth finish of the contact surface of the sliding block (4) and the sliding sheet (5) is Ra0.8 or more.
3. The anti-jump locking sliding support with adiabatic function of claim 1, wherein the setting plate (16) comprises a series of setting plates (16) of different thicknesses, which are assembled in combination as necessary.
4. The anti-bouncing locking sliding supporting device with the heat insulation function according to claim 1, wherein the gap between the end surface of the horizontal segment of the L-shaped anti-bouncing block (15) and the side wall surface of the heat insulation block (3) is the sliding limit of the anti-bouncing locking sliding supporting device, so that the anti-bouncing in the horizontal direction is realized; the positions of the connecting pins (8) in vertical pin holes penetrating through the welding support (1), the heat insulation block (3) and the sliding block (4) are adjusted through the positioning screws (11), sliding gaps are prefabricated, and sliding limiting is achieved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211314455.1A CN115436006B (en) | 2022-10-26 | 2022-10-26 | Anti-bouncing locking sliding support device with heat insulation function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211314455.1A CN115436006B (en) | 2022-10-26 | 2022-10-26 | Anti-bouncing locking sliding support device with heat insulation function |
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| CN115436006A CN115436006A (en) | 2022-12-06 |
| CN115436006B true CN115436006B (en) | 2023-02-03 |
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| CN115575078B (en) * | 2022-12-09 | 2023-03-03 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic locking device of large-scale rectangle flange |
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| CN103672401A (en) * | 2013-12-31 | 2014-03-26 | 常州博朗低温设备有限公司 | Supporting structure of low-temperature liquid heat-insulating tank container |
| CN106768805B (en) * | 2016-12-23 | 2019-04-30 | 中国航天空气动力技术研究院 | A kind of impulse wind tunnel flat plate model sliding support |
| CN107826929B (en) * | 2017-11-20 | 2024-01-26 | 恒达富士电梯有限公司 | Pit compensation rope tensioning anti-jump equipment |
| CN107966262B (en) * | 2017-11-20 | 2019-07-12 | 北京航天长征飞行器研究所 | A kind of high-temperature vacuum wind tunnel test cabin and diffuser overall structure and sliding compensation method for thermal with sliding thermal compensation function |
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