Device for testing performance of filter

Abstract

The utility model discloses a device for testing the performance of a filter, which comprises a bottom plate, the four corners of the top of the bottom plate are fixedly connected with guide supporting rods, the top ends of the four guide supporting rods are fixedly connected with the same top plate, and the four guide supporting rods are sleeved with the same movable plate located below the top plate in a sliding mode. Through the arrangement of a series of structures, multi-channel testing can be automatically completed during testing, personnel do not need to conduct testing operation one by one, the testing efficiency is improved, in the testing process, the loosening risk in the testing process can be effectively reduced through the mode that the bottom is positioned and the upper portion is inserted, pressed and fixed, the testing stability and accuracy are improved, and the testing efficiency is improved. In addition, the arrangement of the guide supporting rod enables the upper end interface and the lower end interface of the filter to be high in matching degree in the insertion process, thereby effectively reducing the loss caused by unsmooth insertion, and reducing the use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of filter performance testing equipment, and particularly relates to a device for testing the performance of a filter. Background Art

[0002] Metal cavity filters (hereinafter referred to as "filters") are widely used in base station communication systems. In the manufacturing process of filters, performance testing is a key process, which directly affects the performance and production cost of filters. The existing method for testing the performance of filters is as follows: First, manually align the lower end interface of the filter with the lower port connector and place it on the bottom plate, then buckle the flip cover on the filter and fasten the buckle. Then, select one channel of the filter and insert the upper port connector and the lower port connector. The network analyzer is connected to the connector through a cable to test whether the performance of the filter in this channel meets the standard. Generally, a filter has multiple channels, and the connector is inserted into the next channel in sequence to complete the test. The existing filter performance testing device in the prior art is as Figure 4 shown;

[0003] The existing filter performance testing device has the following deficiencies during testing: 1. During testing, it is necessary to manually test each channel one by one, and the testing efficiency is relatively low; 2. When buckling the flip cover, it is not easy to align with the upper end interface of the filter, resulting in poor insertion of the upper port connector, shortened service life, and increased testing cost; 3. The upper port connector and the lower port connector are prone to loosening during the testing process, thus separating from the filter, resulting in inaccurate test results and low stability. Considering the above situation, we have proposed a device for testing the performance of a filter. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a device for testing the performance of a filter is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A device for testing the performance of a filter includes a bottom plate. Four corners of the top of the bottom plate are fixedly connected with guiding support rods. The tops of the four guiding support rods are fixedly connected with the same top plate. A moving plate located below the top plate is slidably sleeved on the four guiding support rods. The four guiding support rods play a role of vertically guiding the moving plate. The right side of the top of the top plate is fixedly connected with a manual air valve. The top of the top plate is fixedly connected with a cylinder support mechanism. The left side of the cylinder support mechanism is fixedly connected with a downward pressing cylinder. The bottom of the downward pressing cylinder extends below the top plate. The bottom end of the output shaft of the downward pressing cylinder is fixedly connected with the top of the moving plate. A trachea is fixedly connected and communicated between the downward pressing cylinder and the manual air valve. The downward pressing cylinder and the manual air valve cooperate to drive the moving plate to move vertically;

[0007] A plurality of positioning pin holes and a plurality of relief grooves are formed in the top of the bottom plate. A plurality of lower port connectors are embedded and fixed at the bottom of the bottom plate. The top end of the lower port connector is flush with the top of the bottom plate, and the lower port connector is matched with the lower end interface of the filter;

[0008] A plurality of upper port connectors are embedded and fixed at the bottom of the moving plate. A plurality of spring plungers are embedded in the top of the moving plate. The bottom of the spring plunger extends below the moving plate, and the spring plunger is used to press and fix the top of the filter.

[0009] Preferably, linear bearings are embedded and fixed at the four corners of the top of the moving plate, and the linear bearings are slidably sleeved on the corresponding guiding support rods.

[0010] Preferably, a through hole is formed in the top of the top plate, and the downward pressing air cylinder is located in the corresponding through hole and is in movable contact with the inner wall of the through hole.

[0011] Preferably, positioning pins are arranged in a matching manner with the positioning pin holes. The positioning pins and the positioning pin holes cooperate to position the filter.

[0012] Preferably, the bottom plate, the moving plate and the top plate are all milled from aluminum alloy plates.

[0013] Preferably, the upper port connector and the lower port connector are provided with the same matrix switch in a matching manner. A channel test sequence program is built into the matrix switch, and an external network analyzer is arranged in a matching manner with the matrix switch.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. By arranging a plurality of lower end interface heads and a plurality of upper end interface heads in cooperation with the matrix switch, multi-channel testing can be automatically completed, and it is not necessary for personnel to perform testing operations one by one, thereby improving the testing efficiency;

[0016] 2. Through the cooperation of the positioning pin holes, the positioning pins, the guiding support rods and the spring plungers, the cooperation degree between the upper end interface and the lower end interface of the filter is relatively high during the insertion process, so that the situation of loss caused by unsmooth insertion can be effectively reduced, and the use cost can be reduced. By means of the method of positioning at the bottom and pressing and fixing at the upper part during insertion, the risk of loosening during the testing process can be effectively reduced, and the testing stability and accuracy can be improved;

[0017] Through a series of structural settings, the utility model can automatically complete multi-channel testing during testing, eliminating the need for personnel to perform testing operations one by one, improving testing efficiency. Moreover, during testing, by positioning at the bottom and inserting and pressing firmly at the top, the risk of loosening during the testing process can be effectively reduced, improving testing stability and accuracy. Additionally, with the setting of the guiding support rods, the upper and lower interfaces of the filter have a high degree of fit during the insertion process, thereby effectively reducing the loss caused by unsmooth insertion and lowering the usage cost. Description of the Drawings

[0018] Figure 1 FIG. is a three-dimensional structural schematic diagram of a device for testing the performance of a filter proposed by the utility model;

[0019] Figure 2 is Figure 1 front view structural schematic diagram of;

[0020] Figure 3 is Figure 1 left view structural schematic diagram of;

[0021] Figure 4 is a structural schematic diagram of a device for testing the performance of a filter in the prior art.

[0022] In the figure: 1, bottom plate; 101, positioning pin holes; 102, avoidance grooves; 103, lower port connectors; 2, guiding support rods; 3, moving plate; 301, linear bearings; 302, spring plungers; 303, upper port connectors; 4, top plate; 5, lower pressing cylinder; 6, cylinder support mechanism; 7, hand-operated air valve. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Referring to Figures 1-3 , a device for testing the performance of a filter includes a bottom plate 1. Four corners of the top of the bottom plate 1 are fixedly connected with guiding support rods 2. The tops of the four guiding support rods 2 are fixedly connected with the same top plate 4. A moving plate 3 located below the top plate 4 is slidably sleeved on the four guiding support rods 2. Among them, linear bearings 301 are embedded and fixed at the four corners of the top of the moving plate 3. The linear bearings 301 are slidably sleeved on the corresponding guiding support rods 2. The four guiding support rods 2 and the four linear bearings 301 cooperate to vertically guide the moving plate 3. Among them, the bottom plate 1, the moving plate 3, and the top plate 4 are all milled from aluminum alloy plates;

[0025] A manual air valve 7 is fixedly connected to the upper right side of the top plate 4. A cylinder support mechanism 6 is fixedly connected to the top of the top plate 4. A downward pressing cylinder 5 is fixedly connected to the left side of the cylinder support mechanism 6. The cylinder support mechanism 6 is used to support the downward pressing cylinder 5. The bottom of the downward pressing cylinder 5 extends below the top plate 4. A through hole is provided in the top of the top plate 4. The downward pressing cylinder 5 is located in the corresponding through hole and is in movable contact with the inner wall of the through hole. The through hole is used for the downward pressing cylinder 5 to pass through. The bottom end of the output shaft of the downward pressing cylinder 5 is fixedly connected to the top of the moving plate 3. A trachea is fixedly connected and communicated between the downward pressing cylinder 5 and the manual air valve 7. The downward pressing cylinder 5 and the manual air valve 7 cooperate to drive the moving plate 3 to move vertically.

[0026] A plurality of positioning pin holes 101 and a plurality of avoidance grooves 102 are provided in the top of the bottom plate 1. A positioning pin is arranged in a matching manner with the positioning pin hole 101. The positioning pin and the positioning pin hole 101 cooperate to position the filter. A plurality of lower port connectors 103 are fixedly embedded at the bottom of the bottom plate 1. The top end of the lower port connector 103 is flush with the top of the bottom plate 1. The lower port connector 103 cooperates with the lower end interface of the filter.

[0027] A plurality of upper port connectors 303 are fixedly embedded at the bottom of the moving plate 3. The upper port connector 303 and the lower port connector 103 are arranged to be matched with the same matrix switch. A channel test sequence program is built in the matrix switch. The matrix switch is arranged to be matched with an external network analyzer. A plurality of spring plungers 302 are embedded on the top of the moving plate 3. The bottom of the spring plunger 302 extends below the moving plate 3. The spring plunger 302 is used to press and fix the top of the filter, and can provide a downward elastic force to the filter when the moving plate 3 moves upward, so as to prevent the filter from being carried upward. Through the setting of a series of structures of the utility model, multi-channel tests can be automatically completed during the test, without the need for personnel to perform test operations one by one, improving the test efficiency. And during the test, by positioning the bottom and inserting and pressing the upper part, the risk of loosening during the test can be effectively reduced, improving the test stability and accuracy. In addition, with the setting of the guiding support rod 2, the cooperation degree of the upper end interface and the lower end interface of the filter during the insertion process is relatively high, so that the situation of loss caused by unsmooth insertion can be effectively reduced, reducing the use cost.

[0028] Working principle: Manually place the filter to be tested on the bottom plate 1, and cooperate with the positioning pin holes 101 on the bottom plate 1 and the matching positioning pins to position the filter, ensuring that the lower end interface of the filter is inserted into the lower port connector 103. Immediately afterwards, turn the manual air valve 7 to switch the air circuit, so that the downward pressing cylinder 5 performs a downward pressing action. The downward pressing cylinder 5 drives the moving plate 3 to move downward. The moving plate 3 drives the four linear bearings 301 to slide downward on the corresponding guiding support rods 2 respectively. While the moving plate 3 moves downward, it drives a plurality of spring plungers 302 to move downward. First, the spring plungers 302 come into active contact with the top of the filter. The moving plate 3 continues to move and compresses the spring plungers 302. During the process of the moving plate 3 moving downward, it also drives a plurality of upper port connectors 303 to move downward and insert into the upper end interface of the filter. Immediately afterwards, retrieve the channel test sequence program of the corresponding filter built in the matrix switch, start the channel test sequence program of the matrix switch, automatically complete the test of several channels of the filter, display the test results, and cooperate with the network analyzer to monitor the performance of the filter. By automatically completing the multi-channel test, it is not necessary for personnel to perform test operations one by one, improving the test efficiency. Moreover, the entire test process is relatively simple, facilitating personnel operation. And the filter is fixed in position by the bottom plate 1 and cooperates with the guiding and positioning method, so that the upper and lower end interfaces of the filter have a high degree of fit during the insertion process, thereby effectively reducing the situation of loss caused by unsmooth insertion and reducing the use cost. In addition, the method of positioning and cooperating with the upper insertion and pressing during the test process can effectively reduce the risk of loosening during the test, improving the test stability and accuracy;

[0029] After the test is completed, turn the manual air valve 7 back to its original position, so that the downward pressing cylinder 5 performs an upward lifting action. The output shaft of the downward pressing cylinder 5 drives the moving plate 3 to move upward. The moving plate 3 releases the compression force on the plurality of spring plungers 302. The spring plungers 302 will apply a downward elastic force to the filter, and the elastic force is greater than the resistance of the joint interface until the upper end interface of the filter disengages from the upper port connector 303. The moving plate 3 drives the plurality of upper port connectors 303 to be pulled out from the upper end interface of the filter. The moving plate 3 moves upward smoothly, preventing the situation of lifting the filter during the upward movement of the moving plate 3 and improving the stability. Immediately afterwards, the operator can take out the filter on the bottom plate 1 and perform subsequent processing according to the test results.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A device for testing filter performance, comprising a base plate (1), characterized in that: The top four corners of the bottom plate (1) are fixedly connected to guide support rods (2), the top ends of the four guide support rods (2) are fixedly connected to the same top plate (4), the four guide support rods (2) are slidably sleeved with the same movable plate (3) located below the top plate (4), the top right side of the top plate (4) is fixedly connected to a hand-operated air valve (7), the top of the top plate (4) is fixedly connected to a cylinder support mechanism (6), the left side of the cylinder support mechanism (6) is fixedly connected to a downward-pressing cylinder (5), the bottom of the downward-pressing cylinder (5) extends to the bottom of the top plate (4), the bottom end of the output shaft of the downward-pressing cylinder (5) is fixedly connected to the top of the movable plate (3), and an air pipe is fixedly connected between the downward-pressing cylinder (5) and the hand-operated air valve (7); The top of the bottom plate (1) is provided with a plurality of positioning pin holes (101) and a plurality of avoidance grooves (102); a plurality of lower port joints (103) are embedded and fixed at the bottom of the bottom plate (1); the top ends of the lower port joints (103) are flush with the top end of the bottom plate (1); A plurality of upper port joints (303) are embedded and fixed at the bottom of the movable plate (3), a plurality of spring plungers (302) are embedded at the top of the movable plate (3), and the bottoms of the spring plungers (302) extend to the bottom of the movable plate (3).

2. A device for filter performance testing according to claim 1, characterized in that: Linear bearings (301) are embedded and fixed at the four corners of the top of the movable plate (3), and the linear bearings (301) are slidably sleeved on the corresponding guide support rods (2).

3. The device for filter performance testing according to claim 1, characterized in that: A through hole is provided on the top of the top plate (4), and the downward pressure cylinder (5) is located in the corresponding through hole and is in active contact with the inner wall of the through hole.

4. The device for filter performance testing according to claim 1, characterized in that: The positioning pin hole (101) is matched with a positioning pin.

5. The device for testing filter performance according to claim 1, characterized in that: The bottom plate (1), the movable plate (3) and the top plate (4) are all milled from aluminum alloy plates.

6. The device for testing filter performance according to claim 1, characterized in that: The upper port connector (303) and the lower port connector (103) are matched with the same matrix switch, a channel test sequence program is built in the matrix switch, and the matrix switch is matched with an external network analyzer.

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