CN210571363U - Fatigue testing mechanism for vertical shifting block of pre-selection valve - Google Patents
Fatigue testing mechanism for vertical shifting block of pre-selection valve Download PDFInfo
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- CN210571363U CN210571363U CN201921410670.5U CN201921410670U CN210571363U CN 210571363 U CN210571363 U CN 210571363U CN 201921410670 U CN201921410670 U CN 201921410670U CN 210571363 U CN210571363 U CN 210571363U
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Abstract
The utility model provides a vertical shifting block fatigue test mechanism of preliminary election valve has solved current preliminary election valve when carrying out shifting block fatigue test, and its shifting block is by the problem of actuating mechanism damage. The fatigue testing mechanism comprises a testing platform and at least one group of fatigue testing devices; each group of fatigue testing devices comprises a testing mounting frame, a guide driving assembly and two column-shaped rolling shafts; the test bench comprises a vertical mounting panel, and the vertical mounting panel is used for mounting a guide driving assembly and a test mounting rack; the test mounting rack is vertically arranged on the vertical mounting panel and used for vertically fixing the preselection valve to be tested; the two cylindrical rollers are horizontally arranged on the guide driving assembly side by side from top to bottom, and a sufficient gap is reserved between the two cylindrical rollers; the shifting block of the preselection valve to be tested extends into the gap, and the two column-shaped rolling shafts shift the shifting block up and down along the vertical direction under the driving guide of the guide driving assembly to change the direction.
Description
Technical Field
The utility model belongs to preliminary election valve test field, concretely relates to vertical shifting block fatigue test mechanism of preliminary election valve.
Background
The preselection valve is the important device of gas circuit control system and motorbus shift system, mainly exerts the effect that makes things convenient for the driver to put into gear and connect the gear level, arranges the driver in the driver's cabin, and vertical installation for the high, the low gear conversion of control car. The performance of the preselection valve directly determines the shifting performance of the vehicle, and the function of the preselection valve is very important. Therefore, fatigue testing is required for the service life of the shifting block on which the reversing is frequently performed.
At present, when a vertical shifting block of a preselection valve is subjected to fatigue test, an air cylinder is usually used as a driving mechanism, so that a push rod of the air cylinder is utilized to frequently reverse the shifting block; however, because the contact surface between the cylinder ejector rod and the shifting block is small, the cylinder is in the pushing process, the moving process of the cylinder rod is not guided and limited (the cylinder rod can rotate or axially shift due to unbalance loading in the moving process), the ejector rod can be dislocated due to the force application size and the moving track of the cylinder rod, the pre-selection valve shifting block is unevenly stressed, and the shifting block is damaged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve current preliminary election valve when carrying out shifting block fatigue test, the easy problem of damaging of actuating mechanism of its shifting block, and provide a vertical shifting block fatigue test mechanism of preliminary election valve.
In order to achieve the above object, the present invention provides a technical solution:
a fatigue testing mechanism for a vertical shifting block of a pre-selection valve is characterized by comprising a test board and at least one group of fatigue testing devices; each group of fatigue testing devices comprises a testing mounting frame, a guide driving assembly and two column-shaped rolling shafts; the test bench comprises a vertical mounting panel, and the vertical mounting panel is used for mounting a guide driving assembly and a test mounting rack; the test mounting rack is vertically arranged on the vertical mounting panel and used for vertically fixing the preselection valve to be tested; the two cylindrical rollers are horizontally arranged on the guide driving assembly side by side from top to bottom, and a sufficient gap is reserved between the two cylindrical rollers; the shifting block of the preselection valve to be tested extends into the gap, and the two column-shaped rolling shafts shift the shifting block up and down along the vertical direction under the driving guide of the guide driving assembly to change the direction.
Further, in order to improve the guiding precision, the guiding driving assembly adopts a driving sliding table, and the driving sliding table comprises a driving table and a sliding table; the driving platform is installed on the vertical installation panel through a fastener; the sliding table is connected with the driving table through a guide rod and driven by the driving table to reciprocate along the vertical direction. Of course, other steering drive assemblies may be used for driving and steering.
Furthermore, a limiting buffer device is arranged between the sliding table and the driving table and used for adjusting the stroke of the sliding table so as to adapt to pre-selection valves to be tested with different models; and, this spacing buffer can avoid direct collision between slide table and the drive table when the guide bar contracts, influences accredited testing organization's life.
Further, the two columnar rollers are both installed on the side surface of the sliding table through roller installation frames; the pre-selection valves are various in types, and in order to improve the adaptability of the fatigue testing mechanism, the positions of the roller mounting frames on the side surface of the sliding table can be adjusted up and down; the positions of the two columnar rollers on the roller mounting rack can be adjusted back and forth; can be coordinated with the driving table to achieve the optimal testing position.
Furthermore, in order to make the buffering acting force uniform, the buffering device is a plurality of limiting columns vertically arranged around the circumferential direction of the guide rod; each limiting column is installed on the sliding table through a locking nut, and a cushion pad is arranged at the upper end of each limiting column; the locking position of each limiting column is adjustable up and down and is used for adjusting the stroke of the sliding table.
Furthermore, the test mounting frame comprises a vertical plate and a transverse plate, the vertical plate is mounted on the vertical mounting panel through a fastener, and the transverse plate is provided with a mounting hole for fixing the preselection valve to be tested and arc-shaped holes matched with all sockets at the bottom of the preselection valve to be tested; the top of mounting hole is provided with the seat circle, makes the trachea socket of the preliminary election valve that awaits measuring unsettled, when carrying out gas circuit connection to the preliminary election valve, the tester can plug the trachea at any time, improves work efficiency.
Furthermore, the sliding table is L-shaped, the side plate of the sliding table is positioned on the side of the driving table, and the bottom plate of the sliding table is positioned below the driving table; the guide rod and the limiting columns are installed on the bottom plate.
Further, in order to improve the adaptability of the fatigue testing mechanism, the positions of the driving platform and the testing installation frame on the vertical installation panel are both adjustable up and down, and the height of the driving platform and the testing installation frame can be adjusted according to different types of preselected valves until the optimal testing position is reached.
Furthermore, the preselection valve to be tested is fixed on the mounting hole through a threaded rod, and different types of preselection valves can be fixed by selecting the threaded rods matched with the preselection valves.
The utility model has the advantages that:
1. the utility model discloses when reversing to the preliminary election valve shifting block, adopt direction drive assembly and two post type roller bearings matched with mode, wherein, direction drive assembly has better guidance quality than the cylinder, avoids the application of force to appear the deviation; the two cylindrical rollers are horizontally arranged on the guide driving component from top to bottom side by side, and a gap is reserved; the pre-selection valve shifting block to be tested just extends into the gap, and the two cylindrical rolling shafts are respectively matched with the upper end surface and the lower end surface of the shifting block; the column-shaped roller is used for increasing the stress surface of the end face of the shifting block and reducing the resistance, and the column-shaped roller can change the stress point constantly in the shifting block moving process, so that the shifting block is stressed more uniformly and stably, and the shifting block of the pre-selection valve to be tested is not easy to damage.
2. The utility model discloses a drive slip table drives the direction, and the application of force is steady for the shifting block switching-over is steady not had and is rocked, is favorable to protecting the shifting block not receive the damage.
3. The utility model discloses be provided with spacing buffer between the sliding stand of drive slip table and the drive platform, avoid hard collision between sliding stand and the drive platform when adjustable sliding stand stroke, influence accredited testing organization's life.
4. The utility model discloses well drive table, roller bearing mounting bracket, columnar roller bearing and test mounting bracket's position all can be adjusted, can ensure that this fatigue test mechanism is applicable to each type's preliminary election valve, and adaptability is stronger.
Drawings
FIG. 1 is a front view of the fatigue testing mechanism of the present invention;
FIG. 2 is a top view of the fatigue testing mechanism of the present invention;
FIG. 3 is a side view of the fatigue testing mechanism of the present invention;
FIG. 4 is a side view of the fatigue testing mechanism of the present invention in a use state;
FIG. 5 is a front view of the fatigue testing mechanism of the present invention in a working state;
the reference numbers are as follows:
1-a test bench; 11-vertical mounting panel; 12-a horizontal floor; 2-a fatigue testing device; 3-testing the mounting rack; 31-a riser; 32-a transverse plate; 33-a seat ring; 34-an arc-shaped hole; 4-driving the sliding table; 41-a drive stage; 42-a slide table; 43-a guide bar; 5-limiting buffer device; 51-a limiting column; 52-a cushion pad; 6-column type roller; 7-a roller mounting frame; 8-a preselection valve to be tested; 81-shifting block.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
for convenience only, in the following description, specific directional terms are used, reference is made to the corresponding drawings, and no limitation of the present invention is intended, and when changes are made in the direction defined in the drawings, the direction in which the words are used should be construed as corresponding different directions.
As shown in fig. 1-5, a preselection valve vertical shifting block fatigue test mechanism comprises a test bench 1 and three groups of fatigue test devices 2 (the number of the fatigue test devices 2 can be adjusted according to the test condition). Each set of fatigue testing devices 2 comprises a test mounting frame 3 and two cylindrical rollers 6.
The test bench 1 comprises a vertical mounting panel 11 and a horizontal base plate 12 perpendicular to each other, wherein the vertical mounting panel 11 is used for mounting the guiding drive assembly and the test mounting frame 3.
The guide drive assembly employs a drive slide 4, and the drive slide 4 includes a drive table 41 and a slide table 42. The driving table 41 is a cuboid and is mounted on the vertical mounting panel 11 through a fastener; the slide table 42 is L-shaped, and has side plates located on the sides of the drive table 41 and a bottom plate located below the drive table 41. The slide table 42 is connected to the drive table 41 through a guide rod 43; and reciprocates in the vertical direction by the driving of the driving table 41. And a limiting buffer device 5 is further arranged between the sliding table 42 and the driving table 41 and used for adjusting the stroke of the sliding table 42 so as to adapt to preselection valves to be tested of different models, and when the guide rod 43 contracts, the direct hard collision between the sliding table 42 and the driving table 41 can be avoided, so that the service life of the testing mechanism is influenced. In order to make the buffering acting force uniform, the limiting and buffering device 5 is a plurality of limiting columns 51 vertically arranged around the circumferential direction of the guide rod 43; each limiting column 51 is fixed on the bottom plate of the sliding table 42 through a locking nut, and the upper end of the limiting column is provided with a polyurethane cushion 52; during testing, the position of the locking nut on the limiting rod can be adjusted according to actual requirements, and the limiting rod is fixed on a required stroke, so that the stroke of the whole sliding table 42 can be adjusted. Because the force of the shifting head 81 is smaller, the air pressure for driving the sliding table 4 can be adjusted to be as low as possible when in use, and the shifting head 81 is prevented from being damaged due to overlarge air pressure.
The two cylindrical rollers 6 are horizontally arranged on the side surface of the sliding table 42 from top to bottom side by side through the roller mounting rack 7, and a sufficient gap is left between the two cylindrical rollers 6. The shifting head 81 of the preselection valve 8 to be tested extends into the gap, and the two column-shaped rolling shafts 6 shift the shifting head 81 of the preselection valve 8 to be tested up and down along the vertical direction under the driving guide of the driving sliding table 4 to be reversed.
Because the types and models of the preselection valves are various, in order to improve the adaptability of the fatigue testing mechanism, the position of a driving platform 41 in the fatigue testing mechanism can be adjusted up and down, the position of a roller mounting rack 7 on the side surface of a sliding platform 42 can be adjusted up and down, the positions of two column-shaped rollers 6 on the roller mounting rack 7 can be adjusted back and forth, and the position of a testing mounting rack 3 can be adjusted up and down, wherein the adjustment mode can be a mode that a fastener is matched with a long hole or other existing modes; through the cooperation of the above components, the preselection valve 8 to be tested can be adjusted to an optimal test position.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a vertical shifting block fatigue test mechanism of preliminary election valve which characterized in that: comprises a test bench (1) and at least one group of fatigue test devices (2);
each group of fatigue testing devices (2) comprises a testing mounting frame (3), a guide driving assembly and two column-shaped rolling shafts (6);
the test bench (1) comprises a vertical mounting panel (11), and the vertical mounting panel (11) is used for mounting a guide driving assembly and a test mounting rack (3);
the test mounting rack (3) is vertically arranged on the vertical mounting panel (11) and is used for vertically fixing the preselection valve (8) to be tested;
the two cylindrical rollers (6) are horizontally arranged on the guide driving component from top to bottom side by side, and a gap is reserved between the two cylindrical rollers (6);
and a shifting head (81) of the preselection valve (8) to be tested extends into the gap, and the two column-shaped rolling shafts (6) shift the shifting head (81) up and down along the vertical direction under the driving guide of the guide driving component to change the direction.
2. The preselected valve vertical pick fatigue testing mechanism of claim 1, wherein:
the guide driving assembly adopts a driving sliding table (4), and the driving sliding table (4) comprises a driving table (41) and a sliding table (42);
the driving table (41) is mounted on the vertical mounting panel (11) through a fastener;
the sliding table (42) is connected with the driving table (41) through a guide rod (43) and driven by the driving table (41) to reciprocate along the vertical direction.
3. The preselected valve vertical pick fatigue testing mechanism of claim 2, wherein: and a limiting buffer device (5) is also arranged between the sliding table (42) and the driving table (41) and is used for adjusting the stroke of the sliding table (42).
4. The preselected valve vertical pick fatigue testing mechanism of claim 3, wherein:
the two column-shaped rollers (6) are both installed on the side surface of the sliding table (42) through roller installation frames (7);
the position of the roller mounting rack (7) on the side surface of the sliding table (42) is adjustable up and down;
the positions of the two column-shaped rolling shafts (6) on the rolling shaft mounting rack (7) can be adjusted back and forth.
5. The preselected valve vertical pick fatigue testing mechanism of claim 4, wherein:
the limiting buffer device (5) is a plurality of limiting columns (51) vertically arranged around the circumferential direction of the guide rod (43); each limiting column (51) is arranged on the sliding table (42) through a locking nut, and the upper end of each limiting column is provided with a cushion pad (52); the locking position of each limiting column (51) can be adjusted up and down, and the locking position is used for adjusting the stroke of the sliding table (42).
6. The preselected valve vertical pick fatigue testing mechanism of claim 5, wherein: the test mounting frame (3) comprises a vertical plate (31) and a transverse plate (32), the vertical plate (31) is mounted on the vertical mounting panel (11) through a fastener, and the transverse plate (32) is provided with a mounting hole for fixing the preselection valve (8) to be tested and arc-shaped holes (34) matched with all sockets at the bottom of the preselection valve (8) to be tested; a seat ring (33) is arranged above the mounting hole.
7. The preselected valve vertical pick fatigue testing mechanism of claim 6, wherein:
the sliding table (42) is L-shaped, the side plate of the sliding table is positioned on the side of the driving table (41), and the bottom plate of the sliding table is positioned below the driving table (41); the guide rod (43) and the limiting columns (51) are arranged on the bottom plate.
8. The preselected valve vertical pick fatigue testing mechanism of claim 7, wherein: the positions of the driving table (41) and the test mounting frame (3) on the vertical mounting panel (11) are both adjustable up and down.
9. The preselected valve vertical pick fatigue testing mechanism of claim 8, wherein: and the pre-selection valve (8) to be tested is fixed on the mounting hole through a threaded rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410670.5U CN210571363U (en) | 2019-08-28 | 2019-08-28 | Fatigue testing mechanism for vertical shifting block of pre-selection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410670.5U CN210571363U (en) | 2019-08-28 | 2019-08-28 | Fatigue testing mechanism for vertical shifting block of pre-selection valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210571363U true CN210571363U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921410670.5U Active CN210571363U (en) | 2019-08-28 | 2019-08-28 | Fatigue testing mechanism for vertical shifting block of pre-selection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210571363U (en) |
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2019
- 2019-08-28 CN CN201921410670.5U patent/CN210571363U/en active Active
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