CN215931798U - Test fixture for gas monitoring device - Google Patents
Test fixture for gas monitoring device Download PDFInfo
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- CN215931798U CN215931798U CN202121983339.XU CN202121983339U CN215931798U CN 215931798 U CN215931798 U CN 215931798U CN 202121983339 U CN202121983339 U CN 202121983339U CN 215931798 U CN215931798 U CN 215931798U
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- monitoring device
- test fixture
- assembly
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Abstract
The utility model discloses a test fixture for a gas monitoring device in the technical field of fixtures, which comprises: a push rod; the buffer mechanism is fixedly connected with the push rod; the upper plate assembly is arranged on the buffer mechanism; the bottom plate assembly is fixed on the base, and the push rod pushes the upper plate assembly to clamp the test workpiece between the upper plate assembly and the bottom plate assembly through the buffer mechanism. The test fixture for the gas monitoring device can quickly clamp a test workpiece, protect the workpiece from being damaged, ensure good air tightness, and has the advantages of simple and convenient operation and strong applicability.
Description
Technical Field
The utility model belongs to the technical field of clamps, and particularly relates to a test clamp for a gas monitoring device.
Background
In industrial production, the gas monitoring devices of the same series and different models have different shapes and sizes, but the gas circuit connection modes are similar and are provided with gas inlet and exhaust interfaces. When testing a product, the testing tool needs to be installed on the product through screws. In the test process of each product, the tool needs to be installed and disassembled, the operation is complex, and the working efficiency is low. When the mounting screw is not screwed down, the test result is influenced; if the tension is too high, the product may be damaged.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a test fixture for a gas monitoring device, which can quickly clamp a test workpiece, protect the workpiece from being damaged and ensure good gas tightness.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: a test fixture for a gas monitoring device, comprising: a push rod; the buffer mechanism is fixedly connected with the push rod; the upper plate assembly is arranged on the buffer mechanism; the bottom plate assembly is fixed on the base, and the push rod pushes the upper plate assembly to clamp the test workpiece between the upper plate assembly and the bottom plate assembly through the buffer mechanism.
Further, the buffer mechanism comprises a top plate, a driving shaft, a spring and a buffer plate, wherein the top plate is fixedly connected with the push rod and is in sliding connection with the driving shaft; the driving shaft is fixedly connected with the buffer plate, and the spring is installed between the top plate and the buffer plate.
Furthermore, the buffer mechanism is connected with the guide rail assembly in a sliding manner, the guide rail assembly comprises a guide rail support, a slide rail and a shaft sleeve, the guide rail support is installed on a side plate, and the side plate is installed on the base; the slide rail is arranged on the guide rail support, and the shaft sleeve is connected with the slide rail in a sliding manner; the shaft sleeves are respectively arranged on the top plate and the buffer plate; the axis of the sliding rail is parallel to the axis of the push rod.
Furthermore, the number of the side plates is two, a baffle plate is arranged between the two side plates, and the side plates and the baffle plate enclose a set space for accommodating the push rod, the buffer mechanism and the upper plate assembly.
Furthermore, the upper plate assembly comprises an upper plate, a plurality of pressing rods and rubber pads, the upper plate is fixedly connected with the buffer plate, the pressing rods are fixedly connected with the upper plate respectively, and one rubber pad is mounted at the free end of each pressing rod.
Furthermore, the bottom plate assembly comprises a bottom plate, a plurality of vent holes penetrating through the bottom plate are formed in the bottom plate, and a first O-shaped groove is formed in the periphery of each vent hole on the first surface of the bottom plate; and an air path positioning ring is arranged around each vent hole on the second surface of the bottom plate.
Furthermore, on the first surface and the second surface corresponding to the same vent hole, the axes of the first O-shaped groove, the vent hole and the air path positioning ring are overlapped.
Furthermore, a limiting groove is formed in the first surface of the bottom plate.
The switching air path assembly comprises an air nozzle which is arranged on a switching air path, and the switching air path is arranged on the air path positioning ring; a second O-shaped groove is formed in one side, facing the bottom plate, of the switching air path; and a gasket is arranged on the other side of the switching air circuit.
Further, the clamping force F experienced by the test workpiece between the upper plate assembly and the base plate assembly is:
F=2·k·△X
where k represents the stiffness coefficient of the spring and Δ X represents the amount of deformation of the spring after compression.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the utility model, the push rod pushes the upper plate component through the buffer mechanism to clamp the test workpiece between the upper plate component and the bottom plate component, so that the test workpiece can be quickly clamped, the workpiece is protected from being damaged, and good air tightness can be ensured;
(2) according to the utility model, the installation and the disassembly of the tool in the traditional process are omitted, the sample piece is fixed on the test fixture by applying a certain pressure, the tightness of the gas circuit is ensured, the sample piece can be directly tested, the time for installing and disassembling the tool on each sample piece is saved, the working efficiency is improved, and the working strength of a tester is reduced;
(3) test workpieces with different sizes can be clamped by replacing the bottom plate, the upper plate and the pressing rod;
(4) the positions of the vent holes, the air path positioning rings and the switching air path assembly of the bottom plate can be adjusted to adapt to different test workpieces of the air inlet and the air outlet.
Drawings
FIG. 1 is a schematic plan view of a test fixture for a gas monitoring apparatus according to an embodiment of the present invention in an uncompressed state;
FIG. 2 is a schematic plan view of a test fixture for a gas monitoring apparatus according to an embodiment of the present invention in a compressed state;
FIG. 3 is a rear view of FIG. 1;
FIG. 4 is a right side view of FIG. 1;
fig. 5 is a schematic perspective view of the upper plate assembly in fig. 1:
FIG. 6 is a second perspective view of the upper plate assembly of FIG. 1;
FIG. 7 is a perspective view of the base plate assembly of FIG. 1;
FIG. 8 is a schematic plan view of the structure of FIG. 7;
FIG. 9 is a top view of FIG. 8;
FIG. 10 is a perspective view of the air passage assembly of FIG. 1;
fig. 11 is a schematic plan view of the structure of fig. 10.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 11, a test fixture for a gas monitoring apparatus includes: a push rod 29; the buffer mechanism is fixedly connected with the push rod 29; the upper plate assembly is arranged on the buffer mechanism; and the bottom plate assembly is fixed on the base, and the push rod 29 pushes the upper plate assembly through the buffer mechanism to clamp the test workpiece 14 between the upper plate assembly and the bottom plate assembly.
As shown in fig. 1 and 2, in the present embodiment, a controller 1 is used to control an electric actuator 2; the electric actuator 2 is used for driving the push rod 29 to move up and down along the axial direction of the push rod 29. In this embodiment, the electric actuator 2 may be replaced by a hydraulic drive mechanism or a pneumatic drive mechanism as needed.
The buffer mechanism comprises a top plate 6, a driving shaft 9, a spring 8 and a buffer plate 10, wherein the top plate 6 is connected with a push rod 29 of the electric actuator 2 through a bolt and is in sliding connection with the driving shaft 9; the driving shaft 9 is fixedly connected with a buffer plate 10, and the spring 9 is arranged between the top plate 6 and the buffer plate 10. In this embodiment, the spring 8 is sleeved on the driving shaft 9, and the initial distance between the top plate 6 and the buffer plate 10 in the uncompressed state is adjusted through the limiting nut 7, so that the spring 8 is at the minimum working load.
The buffer mechanism is connected with the guide rail assembly in a sliding manner, the guide rail assembly comprises a guide rail support 3, a slide rail 4 and a shaft sleeve 5, the guide rail support 3 is installed on a side plate 21, the side plate 21 is located on two sides of the test fixture, and the side plate 21 is installed on the base 20; the slide rail 4 is arranged on the guide rail support 3, the shaft sleeve 5 is connected with the slide rail 4 in a sliding way, and the shaft sleeve 5 can freely move up and down along the slide rail 4; a plurality of shaft sleeves 5 are respectively arranged on the top plate 6 and the buffer plate 10; the axis of the slide rail 4 is parallel to the axis of the push rod 29.
The shaft sleeves 5 are fixed at both ends of the top plate 6 and the buffer plate 10 by bolts, respectively, so that the top plate 6 and the buffer plate 10 can only move in the longitudinal direction along the slide rail 4.
As shown in fig. 3, in the present embodiment, there are two side plates 21, a baffle plate 23 is installed between the two side plates 21, and the side plates 21 and the baffle plate 23 enclose a set space for accommodating a push rod 29, a buffer mechanism and an upper plate assembly. Baffle 23 passes through the bolt fastening around the test fixture to reach the incident such as the clamp injury that prevents that the manual maloperation from leading to, power source 22 installs on baffle 23, for electric actuator 2 and controller 1 power supply. The height of the baffle 23 can be adjusted according to actual needs, and working states such as a totally-enclosed space and a semi-enclosed space can be realized, in the embodiment, the baffle 23 blocks the upper half part of the controller 1, the electric actuator 2, the push rod 29, the buffer mechanism and the upper plate assembly, so that the semi-enclosed space is realized, and the dustproof and anti-pinch effects are achieved.
As shown in fig. 5 and 6, the upper plate assembly includes an upper plate 11, pressing rods 12 and rubber pads 13, the upper plate 11 is fixedly connected with the buffer plate 10, the pressing rods 12 are respectively fixedly connected with the upper plate 11, one rubber pad 13 is installed at the free end of each pressing rod 12, and the rubber pads 13 are in direct contact with the test workpiece 14, so that the workpiece can be prevented from being damaged; the upper plate 11 is fixed at the bottom of the buffer plate 10 by the positioning pin 30 through the upper plate 11, and the press rod 12 is fixed on the upper plate 11 by a bolt.
As shown in fig. 7, 8 and 9, the base plate assembly is fixed to the base 20 by bolts. The bottom plate assembly comprises a bottom plate 15, a plurality of vent holes 24 penetrating through the bottom plate 15 are formed in the bottom plate 15, a first O-shaped groove 25 is formed in the periphery of each vent hole 24 on a first surface (upper surface) 151 of the bottom plate 15, and a first O-shaped ring 32 is placed in each first O-shaped groove 25; an air passage positioning ring 16 is mounted around each vent hole 24 on the second (lower) surface 152 of the bottom plate 15. On the first surface 151 and the second surface 152 corresponding to the same vent hole 24, the axes of the first O-shaped groove 25, the vent hole 24 and the air passage positioning ring 16 are coincident.
The first surface 151 of the bottom plate 15 is provided with a limiting groove 31, which is convenient for positioning and fixing the test workpiece 14, and simultaneously, the air inlet and the air outlet of the test workpiece are aligned with the vent holes 24 on the bottom plate 15.
As shown in fig. 10 and 11, the switching air path assembly includes an air nozzle 17, the air nozzle 17 is mounted on a switching air path 18, and the switching air path 18 is mounted on the air path positioning ring 16; a second O-ring 26 is disposed on a side of the adapting air passage 18 facing the bottom plate 15, and a second O-ring 27 is disposed in the second O-ring 26. The switching air passage 18 is fixed in position through the air passage positioning ring 16, so that the switching air passage vent hole 28 is aligned with the bottom plate vent hole 24, the upper surface of the switching air passage 18 is provided with a second O-shaped groove 26, a matched second O-shaped ring 27 is placed, the air nozzle 17 is communicated with the switching air passage vent hole 28, the air nozzle 17 is directly inserted into a test air pipe during testing, and the gasket 19 is installed at the bottom of the switching air passage to buffer and compensate machining errors.
As shown in fig. 2, the push rod 29 of the electric actuator 2 moves downward to drive the top plate 6 and the buffer plate 10 to move downward, when the rubber pad 13 on the press rod 12 contacts with the upper surface of the test workpiece 14, the electric actuator 2 continues to drive the top plate 6 to move downward by a distance Δ X, the spring 8 is pressed and deformed by the top plate 6 and the buffer plate 10 to generate pressure F, so as to drive the upper plate assembly to apply certain pressure F to the test workpiece 14, and further to enable certain pressure F to be provided between the test workpiece 14 and the bottom plate 15, and the first O-ring 32 between the test workpiece 14 and the bottom plate 15 is compressed and deformed in the first O-ring groove 25 by the pressure F, so that the sealing performance between the air passage of the test workpiece and the vent hole 24 on the bottom plate 15 is ensured; the clamping force F of the test workpiece between the upper plate assembly and the bottom plate assembly is:
F=2·k·△X
where k represents the stiffness coefficient of the spring and Δ X represents the amount of deformation of the spring after compression.
By replacing the press bar, the upper plate assembly (upper plate 11 and press bar 12) and the base plate 15, it is possible to achieve a gas monitoring device suitable for different models.
The position of the air passage positioning ring 16 on the bearing tool bottom plate 15 can be adjusted to ensure that the switching air passage 18 is always aligned with the bottom plate vent hole 24.
In the embodiment, the push rod pushes the upper plate assembly to clamp the test workpiece between the upper plate assembly and the bottom plate assembly through the buffer mechanism, so that the test workpiece can be quickly clamped, the workpiece is protected from being damaged, and good air tightness can be ensured; the gas tightness testing device has the advantages that the complex steps of mounting and dismounting of the tool in the traditional process are omitted, the electric actuator can be used for rapidly opening and closing according to required pressure, the gas tightness between the test sample piece and the tool is ensured, and the gas tightness testing device can be suitable for gas monitoring devices of different models by rapidly replacing the upper tool and the lower tool; the test device can directly test the sample pieces, saves the time for mounting and dismounting the tool of each sample piece, improves the working efficiency and reduces the working strength of testers.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A test fixture for a gas monitoring device, comprising:
a push rod;
the buffer mechanism is fixedly connected with the push rod;
the upper plate assembly is arranged on the buffer mechanism;
the bottom plate assembly is fixed on the base, and the push rod pushes the upper plate assembly to clamp the test workpiece between the upper plate assembly and the bottom plate assembly through the buffer mechanism.
2. The test fixture for a gas monitoring device of claim 1, wherein the buffer mechanism comprises a top plate, a drive shaft, a spring and a buffer plate, the top plate being fixedly connected to the push rod and slidably connected to the drive shaft; the driving shaft is fixedly connected with the buffer plate, and the spring is installed between the top plate and the buffer plate.
3. The test fixture for a gas monitoring device of claim 2, wherein the buffer mechanism is slidably connected to a rail assembly, the rail assembly comprises a rail support, a slide rail and a bushing, the rail support is mounted on a side plate, and the side plate is mounted on the base; the slide rail is arranged on the guide rail support, and the shaft sleeve is connected with the slide rail in a sliding manner; the shaft sleeves are respectively arranged on the top plate and the buffer plate; the axis of the sliding rail is parallel to the axis of the push rod.
4. The test fixture for a gas monitoring device of claim 3, wherein there are two side plates, a baffle plate is installed between the two side plates, and the side plates and the baffle plate enclose a set space for accommodating the push rod, the buffer mechanism and the upper plate assembly.
5. The test fixture for a gas monitoring device of claim 2, wherein the upper plate assembly comprises an upper plate, a plurality of pressure bars and a rubber pad, the upper plate is fixedly connected with the buffer plate, the plurality of pressure bars are respectively fixedly connected with the upper plate, and one rubber pad is mounted at a free end of each pressure bar.
6. The test fixture for a gas monitoring device of claim 1, wherein the base plate assembly includes a base plate having a plurality of vent holes extending through the base plate, a first O-ring groove being disposed around each of the vent holes on a first surface of the base plate; and an air path positioning ring is arranged around each vent hole on the second surface of the bottom plate.
7. The test fixture for a gas monitoring device of claim 6, wherein the axes of the first O-ring, the vent hole and the gas path locating ring coincide on the first surface and the second surface corresponding to the same vent hole.
8. The test fixture for a gas monitoring device of claim 6, wherein the first surface of the base plate is provided with a retaining groove.
9. The test fixture for a gas monitoring device of claim 6, further comprising an adapter gas path assembly, said adapter gas path assembly comprising a gas nipple, said gas nipple being mounted on an adapter gas path, said adapter gas path being mounted on said gas path positioning ring; a second O-shaped groove is formed in one side, facing the bottom plate, of the switching air path; and a gasket is arranged at the bottom of the switching air passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121983339.XU CN215931798U (en) | 2021-08-23 | 2021-08-23 | Test fixture for gas monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121983339.XU CN215931798U (en) | 2021-08-23 | 2021-08-23 | Test fixture for gas monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215931798U true CN215931798U (en) | 2022-03-01 |
Family
ID=80420084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121983339.XU Active CN215931798U (en) | 2021-08-23 | 2021-08-23 | Test fixture for gas monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215931798U (en) |
-
2021
- 2021-08-23 CN CN202121983339.XU patent/CN215931798U/en active Active
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