CN215766963U - Axial compression column displacement measuring device based on spring support - Google Patents
Axial compression column displacement measuring device based on spring support Download PDFInfo
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- CN215766963U CN215766963U CN202121962600.8U CN202121962600U CN215766963U CN 215766963 U CN215766963 U CN 215766963U CN 202121962600 U CN202121962600 U CN 202121962600U CN 215766963 U CN215766963 U CN 215766963U
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Abstract
The utility model discloses a device for measuring displacement of a shaft compression column based on a spring support, which comprises an upper cross beam assembly body, a lower cross beam assembly body, a vertical fixing column and a spring baffle. All components of the system are processed in factories, so that the precision and the quality are easier to control, and the field experiment installation is quick and convenient. The utility model solves the problem that the frame type displacement frame is fixed on the periphery of the column to generate large restraint force on the column. The principle is as follows: through the short screw rod card on the post, when post pressurized volume expansion, the spring is transfered to the power that the short screw rod will receive, makes the short screw rod outwards remove along with the inflation of post through compression spring to guarantee not to give a great reverse constraining force of post, improved experimental precision and accuracy. In addition, the utility model can also measure the horizontal displacement of the column by installing the displacement meter in the horizontal direction to support against the test piece.
Description
Technical Field
The utility model relates to a displacement frame for mounting a displacement meter, in particular to a displacement frame for a column, which solves the problem that the displacement frame has restraining force.
Background
In the experiments such as tension and compression of the column, the vertical strain of the column is an important data in the experiments. The strain measurement is carried out by two common methods, namely an adhesive strain gauge and an external displacement meter. Compared with a strain gauge, the vertical displacement of the displacement measuring column has a larger measuring range and higher accuracy than the strain gauge. Therefore, measuring the displacement also becomes an irreplaceable method. However, in the conventional method for measuring the additional displacement meter, the bracket of the displacement meter is deformed due to the axial expansion of the test piece in the actual measurement process, so that the measurement result has larger error. There has been no good way to measure vertical displacement of the column.
Some scholars load the plate displacement as the displacement of the entire column by measuring the tester, but this does not measure the displacement of a specific area required. The vertical displacement of the column is measured by fixing the displacement meter by the frame around the column, but the frame can provide a large reverse constraint force for the column, so that the accuracy of the experiment is influenced.
The utility model well solves the problem of measuring the vertical displacement of the column by using the displacement meter, counteracts the force of the column on the displacement frame by the spring baffle, and can adjust the designated area of the measuring column by adjusting the length of the vertical fixed column in the displacement frame.
In addition, the utility model also measures the horizontal displacement of the column by installing the horizontal displacement meter on the displacement frame, and the measurement is carried out without installing the displacement meter on an additional long-rod type displacement frame.
SUMMERY OF THE UTILITY MODEL
For tests such as tension and compression of a column, in order to solve the problems that a traditional device for mounting a displacement meter is easy to generate reverse constraint force when measuring the vertical displacement of the column and an additional displacement frame is needed to mount the displacement meter, the utility model provides a displacement frame device which can eliminate the reverse constraint force and can mount a horizontal displacement meter.
The technical scheme of the utility model is as follows:
a device for measuring the displacement of an axial compression column based on a spring support comprises an upper cross beam assembly body 1, a lower cross beam assembly body 2 and four vertical fixing columns 3; upper crossbeam assembly body 1 inlays in the upper end recess 31 of vertical fixed column 3, and lower crossbeam assembly body 2 inlays in vertical fixed column 3 lower extreme recess 32. The upper beam assembly body comprises an upper beam frame 11, a spring baffle 4 and an L-shaped screw 12; the spring baffle 4 is connected in the middle of each side of the upper transverse beam frame 11, and the L-shaped screw 12 is connected with a second nut 114 on the vertical frame 13 through a first nut 113 at the right end of each side of the upper transverse beam frame 11; the lower cross beam assembly comprises a lower cross beam frame 21, a spring baffle 4 and a supporting plate 23; the spring baffle 4 is connected in the middle of each side of the lower cross beam frame 21, and the supporting plate 23 is fixed on the right side of each end of the lower cross beam frame and is aligned with the first nut 113 at the right end of each side of the upper cross beam frame 11;
the spring baffle 4 comprises two short screws 41, a long screw 42, a fixing plate 43, two positioning plates 44, a spring 45 and a nut A46; a bolt hole A431 is reserved on the fixing plate 43, two short screws 41 are flush and symmetrically welded on two sides of the bolt hole A431, the long screw 42 penetrates through the bolt hole A431, and the first positioning plate 44, the spring 45, the second positioning plate 44 and the nut A46 are sequentially sleeved on the long screw 42.
The left end of each side of the upper beam frame 11 is provided with a first bolt hole 111 connected with the vertical fixing column 3, the middle of each side is provided with three holes A112 connected with the spring baffle 4, the right end of each side is provided with a fixed nut 113 connected with the L-shaped screw 12, and the vertical frame 13 is provided with a fixed second nut 114 connected with the L-shaped screw 12. The size of the L-shaped screw 12 is matched with the size of the first nut 113 and the second nut 114.
The left end of each side of the lower cross beam frame 21 is provided with a second bolt hole 211 connected with the vertical fixing column 3, the middle of the lower cross beam frame is provided with three holes B212 connected with the spring baffle 4, and the right side of the lower cross beam frame is provided with a fixed supporting plate 23 used for supporting a pointer of a displacement meter.
The size of the long screw rod 42 in the spring baffle plate 4 is equal to the size of the middle bolt hole A1123 of the upper beam frame 11 and the middle bolt hole B2123 of the lower beam frame 21. The short screw rod 41 has the same size as the middle smooth round hole A1121, the smooth round hole B1122 of the upper cross beam frame 11, the middle smooth round hole C2121 and the smooth round hole D2122 of the lower cross beam frame 21. The size of the bolt hole A431 is one size larger than that of the long screw rod 42. The size of the positioning plate 44, the size of the spring 45 and the size of the nut A46 are equal to the size of the long screw rod 42.
The upper end and the lower end of the vertical fixing column 3 are provided with a first groove 31, a second groove 32, a first bolt hole A311 and a second bolt hole B321, the height of the first groove 31 and the second groove 32 is equal to the vertical height from the cross beam frame 11 to the cross beam frame 21, the depth of the first groove 31 and the second groove 32 is equal to the thickness of the cross beam frame 11 and the cross beam frame 21, and the first bolt hole A311 and the second bolt hole B321 of the first groove 31 and the second groove 32 are equal to the first bolt hole 111 and the second bolt hole 211 at the left end of the cross beam frame.
The installation method of the device comprises the following steps:
s1, firstly, assembling a displacement frame, namely, firstly, installing the L-shaped screw 12 into the upper beam frame 11 by screwing the first nut 113, and then installing the L-shaped screw 12 into the upper beam frame 11 by screwing the nut 114;
s2, fixing one end of the long screw rod 42 on the upper beam frame 11 through the bolt hole A1123, and enabling the direction to be outward;
s3, the fixing plate 43 is sleeved into the long screw rod 42 through the bolt hole 431, and the two short screw rods 41 penetrate through the smooth round hole A1121 and the smooth round hole B1122 and are mounted on the upper beam frame 11;
s4, a first positioning plate 44, a spring 45, a second positioning plate 44 and a nut A46 are sequentially arranged on the long screw 42;
s5 is repeated the steps 2, 3 and 4 to assemble the lower cross beam assembly 2 in the same manner, and the vertical fixing posts 3 are assembled and fixed by aligning the first bolt holes a311 with the first bolt holes 111 and aligning the second bolt holes B321 with the second bolt holes B211 to form a displacement frame.
S6, placing the column on a testing machine, sleeving the displacement frame from the upper end of the column, positioning the displacement frame, propping the short screw rod 41 against the side face of the column through an adjusting nut A46, then installing a vertical displacement meter on the vertical L-shaped screw rod 12, and propping the supporting plate 23 by the pointer of the vertical displacement meter; and a horizontal displacement meter is arranged on the horizontal L-shaped screw 12, a pointer of the horizontal displacement meter props against the test piece, and then the vertical fixing column 3 is detached. Finally, the test was started.
The vertical area of the column to be measured is changed by adjusting the distance h between the first groove 31 and the second groove 32 of the vertical fixing column 3.
The utility model has the advantages that:
1 measuring device can fix on the post through short screw rod, and when the post pressurized volume inflation, the spring is transfered to the power that short screw rod will receive, makes short screw rod outwards remove along with the inflation of post through compression spring to guarantee not to give a great reverse constraining force of post, improved the precision and the accuracy of experiment.
2 because the L-shaped screw rod of installation displacement meter accessible nut is adjusted the vertical distance, also can install the use to the displacement meter that size, range are inequality.
3) The displacement area of the required measuring column can be changed by changing the distance between the two grooves of the vertical fixing column.
4, the displacement meter can be directly installed on the displacement frame to measure the horizontal displacement without using another displacement frame to install the displacement meter to measure the horizontal displacement.
Drawings
FIG. 1 is a schematic representation of an example of the use of the present invention.
Fig. 2 is an assembly view of a displacement frame according to an embodiment of the present invention.
Fig. 3 is a schematic view of the assembly of an upper header assembly according to an embodiment of the present invention.
Fig. 4 is a schematic view of an upper cross frame according to an embodiment of the present invention.
Fig. 5 is an assembly schematic of a lower beam assembly of an embodiment of the present invention.
Fig. 6 is a schematic view of a lower cross frame of an example of the present invention.
Fig. 7 is a schematic view of a vertical fixation column of an example of the present invention.
FIG. 8 is an assembly schematic of a spring retainer according to an embodiment of the present invention.
Fig. 9 is an assembly view of a fixing plate according to an embodiment of the present invention.
In the figure: 1. an upper beam assembly; 11. an upper beam frame; 12. an L-shaped screw; 13. a vertical frame; 111-first bolt hole (upper cross beam left end bolt hole); 112. hole a (upper beam frame middle hole); 113. a first nut (a nut is fixed at the right end of the upper beam frame); 114. a second nut (vertical frame fixing nut); 1121. a smooth round hole A (a smooth hole on the left side of the middle hole of the upper beam frame); 1122. a smooth round hole B (a smooth hole on the right side of the middle hole of the upper beam frame); 1123. a middle bolt hole A (middle bolt hole of the upper beam frame); 2. a lower beam assembly; 21. a lower cross beam frame; 23. a support plate; 211. a second bolt hole (a lower cross beam frame left end bolt hole); 212. hole B (lower beam frame middle hole); 2121. a smooth round hole C (a smooth hole on the left side of the middle hole of the lower crossbeam frame); 2122. a smooth round hole D (a smooth hole on the right of the middle hole of the lower crossbeam frame); 2123. a middle bolt hole of a middle hole of the upper beam frame; 3. a vertical fixing column; 31. a first groove (upper end of the vertical fixing column); 32. a second groove (lower end of the vertical fixing column); 311. a first bolt hole A (a bolt hole of a groove at the upper end of the vertical fixing column); 321. a second bolt hole B (a bolt hole of a groove at the upper end of the vertical fixing column); 4. a spring baffle; 41. a short screw; 42. a long screw; 43. a fixing plate; 44. positioning a plate; 45. a spring; 46. a nut A; 431. bolt hole a (fixed plate middle bolt hole); h. the distance of the grooves at the two ends of the vertical fixing column.
Detailed Description
Embodiments of the present patent are described in detail below with reference to the accompanying drawings.
Firstly, assembling a displacement frame, namely, firstly, installing an L-shaped screw rod into an upper cross beam frame by a method of screwing a nut, and fixing one end of a long screw rod on the upper cross beam frame through a bolt hole in an outward direction. And sleeving the fixing plate into the long screw through the bolt hole, and installing the two short screws on the upper beam frame through the smooth holes of the middle hole. And then a positioning plate, a spring, a positioning plate and a nut are sequentially arranged on the long screw rod in the following sequence.
And assembling the lower cross beam assembly body in the same way, and aligning and assembling the upper and lower bolt holes of the vertical fixing column with the upper cross beam frame left end bolt hole and the lower cross beam frame left end bolt hole respectively to fix the upper and lower cross beam assembly bodies to form a displacement frame.
Put the post on the testing machine, advance the displacement frame from the upper end cover of post, withstand the post with short screw rod through adjusting nut after deciding the position of displacement frame, then install the displacement meter on L type screw rod, vertical displacement meter pointer withstands the layer board, and horizontal displacement meter pointer withstands the test piece, demolishs vertical fixed column.
4 finally the test is started.
Claims (4)
1. The utility model provides a shaft compression post displacement measuring device based on spring bracket which characterized in that: the device comprises an upper cross beam assembly body (1), a lower cross beam assembly body (2) and four vertical fixing columns (3); the upper crossbeam assembly body (1) is embedded in a first groove (31) at the upper end of the vertical fixing column (3), and the lower crossbeam assembly body (2) is embedded in a second groove (32) at the lower end of the vertical fixing column (3); the upper beam assembly body comprises an upper beam frame (11), a spring baffle plate (4) and an L-shaped screw rod (12); the spring baffle (4) is connected to the middle of each side of the upper transverse beam frame (11), and the L-shaped screw (12) is connected with a second nut (114) on the vertical frame (13) through a first nut (113) at the right end of each side of the upper transverse beam frame (11); the lower cross beam assembly body comprises a lower cross beam frame (21), a spring baffle (4) and a supporting plate (23); the spring baffle (4) is connected in the middle of each side of the lower cross beam frame (21), and the supporting plate (23) is fixed on the right side of each end of the lower cross beam frame and is aligned with the first nut (113) at the right end of each side of the upper cross beam frame (11);
the spring baffle (4) comprises two short screw rods (41), a long screw rod (42), a fixing plate (43), two positioning plates (44), a spring (45) and a nut A (46); a bolt hole A (431) is reserved on the fixing plate (43), two short screws (41) are welded on two sides of the bolt hole A (431) in a flush and symmetrical mode, a long screw (42) penetrates through the bolt hole A (431), and a first positioning plate (44), a spring (45), a second positioning plate (44) and a nut A (46) are sequentially sleeved on the long screw (42);
a first bolt hole (111) is reserved at the left end of each side of the upper beam frame (11) and connected with the vertical fixing column (3), three holes A (112) are reserved in the middle and connected with the spring baffle (4), a fixed nut (113) is arranged at the right end and connected with the L-shaped screw rod (12), and a fixed second nut (114) is arranged on the vertical frame (13) and connected with the L-shaped screw rod (12); the size of the L-shaped screw (12) is matched with the size of the first nut (113) and the second nut (114).
2. The device for measuring the displacement of the compression shaft based on the spring bracket as claimed in claim 1, wherein: a second bolt hole (211) is reserved at the left end of each side of the lower cross beam frame (21) and connected with the vertical fixing column (3), three holes B (212) are reserved in the middle and connected with the spring baffle (4), and a fixed supporting plate (23) is arranged on the right side and used for supporting a pointer of the displacement meter.
3. The device for measuring the displacement of the compression shaft based on the spring bracket as claimed in claim 1, wherein: the size of a long screw rod (42) in the spring baffle plate (4) is equal to the size of a middle bolt hole A (1123) of the upper beam frame (11) and the size of a middle bolt hole B (2123) of the lower beam frame (21); the size of the short screw rod (41) is equal to that of a middle smooth round hole A (1121) and a smooth round hole B (1122) of the upper cross beam frame (11), a middle smooth round hole C (2121) and a middle smooth round hole D (2122) of the lower cross beam frame (21); the size of the bolt hole A (431) is larger than that of the long screw rod (42) by one; the size of the positioning plate (44), the size of the spring (45) and the size of the nut A (46) are equal to the size of the long screw rod (42).
4. The device for measuring the displacement of the compression shaft based on the spring bracket as claimed in claim 1, wherein: the vertical fixing column (3) is provided with a first groove (31) at the upper end and the lower end, a second groove (32) and a first bolt hole A (311) and a second bolt hole B (321), the height of the first groove (31) and the second groove (32) is equal to the vertical height from an upper cross beam frame (11) to a lower cross beam frame (21), the depth of the first groove (31) and the second groove (32) is equal to the thickness of the upper cross beam frame (11) and the lower cross beam frame (21), the first groove (31), the first bolt hole A (311) and the second bolt hole B (321) of the second groove (32) are equal to the first bolt hole (111) and the second bolt hole B (211) at the left end of the cross beam frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121962600.8U CN215766963U (en) | 2021-08-20 | 2021-08-20 | Axial compression column displacement measuring device based on spring support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121962600.8U CN215766963U (en) | 2021-08-20 | 2021-08-20 | Axial compression column displacement measuring device based on spring support |
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| Publication Number | Publication Date |
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| CN215766963U true CN215766963U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121962600.8U Active CN215766963U (en) | 2021-08-20 | 2021-08-20 | Axial compression column displacement measuring device based on spring support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819867A (en) * | 2021-08-20 | 2021-12-21 | 北京工业大学 | Axial compression column displacement measuring device and method based on spring support |
| CN116623730A (en) * | 2023-07-21 | 2023-08-22 | 山西工程技术学院 | Foundation pit deformation monitoring equipment and application method thereof |
-
2021
- 2021-08-20 CN CN202121962600.8U patent/CN215766963U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819867A (en) * | 2021-08-20 | 2021-12-21 | 北京工业大学 | Axial compression column displacement measuring device and method based on spring support |
| CN113819867B (en) * | 2021-08-20 | 2024-04-05 | 北京工业大学 | Device and method for measuring displacement of axial compression column based on spring support |
| CN116623730A (en) * | 2023-07-21 | 2023-08-22 | 山西工程技术学院 | Foundation pit deformation monitoring equipment and application method thereof |
| CN116623730B (en) * | 2023-07-21 | 2023-10-13 | 山西工程技术学院 | Foundation pit deformation monitoring equipment and application method thereof |
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