Testing device for smoke exhaust spring hose of range hood

Abstract

The utility model discloses a device for testing a smoke exhaust spring hose of a range hood, which comprises a test board, and a pulling mechanism for pulling the spring hose is mounted at the top of the test board; the pulling mechanism pulls and tests from the two ends of the spring hose; the rolling and sliding mechanism is used for supporting the rolling and sliding spring hose; the rolling and sliding mechanism comprises a plurality of bottom supporting rollers supported at the bottom of the spring hose and further comprises a plurality of supporting roller structures supported on the side edge and the top of the spring hose, each supporting roller structure comprises a support, and a plurality of supporting rollers supported on the side edge and the top of the spring hose respectively are installed on the supports. During testing, the winding motor drives the rope winding wheel to wind the pulling rope, and the spring hose is stretched to a specified length; the winding motor drives the rope winding wheel to unwind the pulling rope, and the pulling rope automatically shrinks under the elastic restoring force of the spring hose. The above steps are repeated, so that the telescoping stability of the spring hose is maintained in the process of testing the smoke exhaust spring hose of the range hood, and the testing accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the oil fume exhaust spring hose testing technical field, especially relate to a kind of oil fume exhaust spring hose testing device. BACKGROUND

[0002] The oil fume exhaust spring hose is installed on the air outlet of the oil fume extractor, and the spring exhaust hose is designed to facilitate the connection of the oil fume extractor to the chimney pipe during installation.

[0003] The spring exhaust hose is a flexible pipe, and its structural strength is much lower than that of a steel pipe. Therefore, performance testing of the spring exhaust hose is often required during actual production, mainly to test whether it can be elastically reset after frequent stretching and contraction, and whether tearing occurs (tearing can cause oil fume leakage due to poor sealing during subsequent smoke exhaust).

[0004] The current testing method is as follows: the operator installs the two ends of the spring hose on the pulling device, and uses the cylinder to pull the spring hose. During testing, the spring is easily deviated in the pulling direction due to its light weight, which is caused by the light weight of the suspended spring hose. The spring hose bends downward, and the stability of the spring hose posture is not high. This leads to poor testing accuracy due to the up-and-down movement and left-and-right swinging of the spring hose during testing.

[0005] Moreover, the linear pulling of the cylinder causes the spring hose to be easily deviated once it is deviated, and the pulling device is easily deviated (deviated from the axis of the spring hose), which further causes the spring structure on the hose to be easily damaged or even torn apart. Therefore, it is difficult to accurately test the tensile strength of the spring hose (linear stretching).

[0006] Therefore, it is important to design a testing device with high pulling stability and preventing the spring hose from moving up and down and swinging left and right during pulling testing to ensure its linear stretching, which is crucial for improving the accuracy of testing. INVENTION CONTENTS

[0007] Based on the above background, the utility model aims to provide an oil fume exhaust spring hose testing device.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions:

[0009] An oil fume exhaust spring hose testing device includes a testing table, and a pulling mechanism for pulling the spring hose is installed on the top of the testing table. The pulling mechanism pulls the spring hose from both ends for testing.

[0010] The rolling and sliding mechanism also supports the rolling and sliding spring hose;

[0011] The rolling and sliding mechanism comprises a plurality of bottom supporting rollers supported at the bottom position of the spring hose, and a supporting roller structure supported at the side and top positions of the spring hose, wherein the supporting roller structure comprises a bracket, and a plurality of supporting rollers are mounted on the bracket and supported at the side and top positions of the spring hose.

[0012] Preferably, flange rings are fixedly connected to the two ends of the spring hose.

[0013] The flange rings are provided with pulling brackets, and the pulling brackets are pulled on the pulling mechanism.

[0014] Preferably, the pulling bracket comprises a pulling flange ring detachably mounted on the flange ring.

[0015] A pair of pulling rods are symmetrically arranged on the inner side wall of the pulling flange ring.

[0016] A pin shaft is fixedly connected to the free end of the pulling rod, and a pulling rod is detachably mounted on the pin shaft.

[0017] A pull ring is fixedly connected to the free end of the pulling rod.

[0018] Preferably, the pulling mechanism comprises a winding motor arranged on both sides, and an output shaft of the winding motor is fixedly provided with a rope winding wheel, a pulling rope is wound on the rope winding wheel, and the pulling rope is fixedly connected to the pull ring.

[0019] Preferably, the free end of the pulling rod is fixedly connected with an ear seat, and the pin shaft is fixedly connected between the ear seats.

[0020] Preferably, the pulling rod is in an L shape, a pin hole is formed in the ear seat, the pin shaft penetrates through the pin hole, the upper end of the pin shaft is blocked at the top of the ear seat, and a anti-loosening nut is threadedly connected to the lower end of the pin shaft.

[0021] Preferably, a motor bracket is fixedly connected to the bottom of the winding motor, and the motor bracket is fixedly connected to the top of the test table.

[0022] Preferably, the bracket is in a U shape.

[0023] An ear seat is fixedly connected to the bottom of the bracket, and the ear seat is fixedly connected to the side of the spring hose.

[0024] Preferably, a supporting installation rod is fixedly connected to the two sides of the bracket, and the supporting installation rod is fixedly connected to the top of the test table.

[0025] The utility model has the following beneficial effects:

[0026] 1. During the test, when the winding motor drives the winding wheel to wind up the rope, the spring hose is stretched. After being stretched to a specified length, the winding motor drives the winding wheel to unwind the rope, at which point it automatically contracts under the elastic restoring force of the spring hose. This cycle is repeated to achieve repeated pulling tests.

[0027] 2. Before testing, the flexible spring hose is supported on the base roller. During the test, the frequently expanding and contracting flexible spring hose, supported by the base roller, is prevented from bending downwards. This maintains the linear motion stability of the flexible spring hose during the test. The flexible spring hose continuously rubs against the base roller, causing the roller to roll, reducing friction interference with the experiment.

[0028] 3. A support roller structure consisting of several support rollers positioned on the sides and top of the spring hose. The support roller structure includes a bracket on which several support rollers are mounted, each supporting the sides and top of the spring hose.

[0029] The support roller structure provides support from the top and left and right sides of the spring hose during the test, further preventing the spring hose from undulating or swaying. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the pull bracket in the embodiment of this utility model;

[0033] Figure 3 This is an embodiment of the present utility model. Figure 1 A structural diagram from another perspective;

[0034] Figure 4 This is an embodiment of the present utility model. Figure 1 The top view in the image.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0038] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0039] Example 1

[0040] like Figures 1-4 As shown, a testing device for a range hood exhaust spring hose includes a test platform 1. A pulling mechanism for the spring hose 4 is mounted on the top of the test platform 1. Specifically, the pulling mechanism includes a winding motor 21 arranged on both the front and rear sides (to maintain the horizontal alignment between the winding motor 21 and the tested spring hose 4, a motor bracket 23 is fixedly installed at the bottom of the winding motor 21, and the motor bracket 23 is fixedly installed at the top of the test platform 1). A winding wheel 22 is fixedly installed on the output shaft of the winding motor 21. A pulling rope 24 is wound around the winding wheel 22 and is secured to a pull ring. During the test, when the winding motor 21 drives the winding wheel 22 to wind the pulling rope 24, the spring hose 4 is stretched. After being stretched to a specified length, the winding motor 21 drives the winding wheel 22 to unwind the pulling rope 24, at which point it automatically retracts under the elastic restoring force of the spring hose 4.

[0041] This process is repeated repeatedly to perform repeated drag-and-drop tests.

[0042] The winding motor 21 is a servo motor commonly used in the existing spring hose 4 test process. According to the test requirements, the winding motor 21 drives the winding wheel to rotate a certain number of turns and then rotates in the opposite direction during the test process. Those skilled in the art can know the specific working principle and control process of the winding motor 21 disclosed in the utility model by referring to technical manuals and dictionaries.

[0043] During actual testing, the existing comparison test method is used, such as comparing the sampled spring hose 4 products with qualified products for testing, that is, two or more sets of range hood exhaust spring hose test devices are used for synchronous comparison testing.

[0044] Embodiment 2

[0045] As shown in Figures 1-4 In order to avoid the spring hose 4 from rising and falling and swinging left and right during the test process, the above-mentioned range hood exhaust spring hose 4 test device further includes a rolling and sliding mechanism for supporting the rolling and sliding spring hose 4.

[0046] Specifically, the rolling and sliding mechanism includes a plurality of bottom support rollers 6 supported at the bottom position of the spring hose 4, and the bottom support roller 6 includes a roller support and a roller rotatably connected to the roller support. The rolling direction of the roller is matched with the linear extension direction of the spring hose 4.

[0047] Before testing, the spring hose 4 is supported on the bottom support roller 6. During the test process, the spring hose 4 that frequently extends and contracts is supported on the bottom support roller 6, so that the spring hose 4 is prevented from bending downward. The linear motion stability of the spring hose 4 during testing is maintained. The spring hose 4 is continuously rubbed on the bottom support roller 6, and the bottom support roller 6 rolls to reduce the interference of friction on the experiment (in actual testing, a guide cylinder is tried to be used, the spring hose 4 is rubbed seriously, and even the mouth of the guide cylinder is easily stuck in the spring structure groove of the spring hose 4, which causes low testing accuracy and tearing of the spring hose 4 to interfere with the test).

[0048] At the same time, in order to further increase the testing accuracy of the spring hose 4, the above-mentioned range hood exhaust spring hose 4 test device further includes a plurality of support roller structures supported at the side edges and top position of the spring hose 4, and the support roller structure includes a support 5, and a plurality of support rollers 51 supported at the side edge position and top position of the spring hose 4 are installed on the support 5.

[0049] The support roller 51 structure is used to support the spring hose 4 from the top and left and right sides during the test process, further avoiding the spring hose 4 from rising and falling and swinging left and right.

[0050] Specifically, the bracket 5 is U-shaped; a support roller 51 is fixedly installed on each side of the lower end of the bracket 5, supporting the side of the spring hose 4. A support roller 51 is installed on the top of the bracket 5, supporting the top of the spring hose 4.

[0051] Therefore, the spring in the total cylindrical structure is restricted in its rolling motion at the top, bottom, and both sides. The cooperation of multiple limiting structures ensures the stability of the linear extension and contraction of the spring hose 4 during the test.

[0052] The support mounting rods for the support bracket 5 are fixedly installed on both sides of the bracket 5, and the support mounting rods are fixedly installed on the top of the test bench 1.

[0053] Example 3

[0054] like Figures 1-4 As shown, in this embodiment, based on the structure of embodiment 2, flange rings 41 are fixedly connected to both ends of the spring hose 4 (in the prior art, the two ends of the spring hose 4 on the range hood are integrally formed flange rings, which are convenient to install on the exhaust port of the range hood and the air inlet of the chimney duct).

[0055] For ease of testing, the flange ring 41 is equipped with a pull bracket, which is pulled onto the pull mechanism.

[0056] Specifically, the pull bracket 5 includes a pull flange ring 31 with a detachable flange ring; similar to the existing flange installation method, the pull flange ring 31 and the flange ring 41 are connected by several bolts.

[0057] Meanwhile, a pair of symmetrically arranged pull rods 32 are fixedly installed on the inner wall of the pull flange ring 31. The pull rods 32 are L-shaped and extend out of the pull flange ring 31.

[0058] Meanwhile, a pin 322 is fixedly attached to the free end of the pull rod 32. Specifically, the free end of the pull rod 32 is fixedly connected to a lug 321, and the pin 322 is fixed between the lugs. The pull rod 32 is L-shaped, and a pin hole is provided on the lug 321. The pin 322 passes through the pin hole, and its upper end is positioned against the top of the lug 321; the lower end is threaded with an anti-loosening nut.

[0059] Meanwhile, a pull rod 323 is detachably mounted on the pin 322 (the detachable method is that the pull rod 323 is threadedly connected to a threaded hole opened in the center of the pin 322). A pull ring 324 is fixedly connected to the free end of the pull rod 323.

[0060] The aforementioned pull rope 24 is fixed to the pull ring 324, and the test is repeated by pulling in the manner described in the above embodiment.

[0061] The flange ring connection, the pulling rod 32, the ear seat and the pin shaft rod 322 are fixed to realize the convenience of pulling the spring hose 4 in the test process.

[0062] Of course, the above description is not a limitation of the utility model, and the utility model is not limited to the above examples. Changes, modifications, additions or replacements made by the skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. A range hood exhaust spring hose testing device, characterized by, Including test platform, the top of test platform is installed with pulling mechanism of pulling spring hose, pulling mechanism pulls test from both ends of spring hose; Also including rolling mechanism of supporting rolling spring hose; The rolling mechanism includes several bottom support rollers supported at the bottom position of spring hose, and several support roller structures supported at the side and top positions of spring hose, the support roller structure includes a support, and a plurality of support rollers supported at the side and top positions of spring hose are installed on the support.

2. The range hood exhaust spring hose testing device of claim 1, wherein, Both ends of the spring hose are fixedly connected with flange rings; The flange ring is installed with a pulling bracket, and the pulling bracket is pulled on the pulling mechanism.

3. The range hood exhaust spring hose testing device of claim 2, wherein, The pulling bracket includes a pulling flange ring which can be detachably installed on the flange ring. A pair of pulling rods symmetrically arranged above and below are fixedly installed on the inner side wall of the pulling flange ring. The free end of the pulling rod is pinned with a pin shaft, and a pull rod is detachably installed on the pin shaft. The free end of the pull rod is fixedly connected with a pull ring.

4. The range hood exhaust spring hose testing device of claim 3, wherein, The pulling mechanism includes winding motors arranged on both sides, the output shaft of the winding motor is fixedly installed with a rope winding wheel, the rope winding wheel is wound with a pulling rope, and the pulling rope is fixedly installed on the pull ring.

5. The range hood exhaust spring hose testing device of claim 3, wherein, The free end of the pulling rod is fixedly connected with an ear seat, and the pin shaft is pinned between the ear seats.

6. The range hood exhaust spring hose testing device of claim 5, wherein, The shape of the pulling rod is L-shaped, the ear seat is provided with a pin hole, the pin shaft penetrates through the pin hole, and the upper end of the pin shaft is blocked at the top of the ear seat; the lower end is threadedly connected with a anti-loose nut.

7. The range hood exhaust spring hose testing device of claim 4, wherein, The bottom of the winding motor is fixedly installed with a motor bracket, and the motor bracket is fixedly installed at the top position of the test platform.

8. The range hood exhaust spring hose testing device of claim 1, wherein, The shape of the support is U-shaped; The lower end of the support is fixedly installed with a support roller supported at the side position of the spring hose.

9. The range hood exhaust spring hose testing device of claim 8, wherein, The both sides of the support are fixedly installed with support installation rods supporting the support, and the support installation rods are fixedly installed on the top of the test platform.

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