Sand and dust test equipment and seat belt tensile test mechanism

Abstract

The embodiment of the present invention relates to a testing mechanism, and in particular to a sand and dust test device and a safety belt stretching test mechanism, the sand and dust test device comprises: a box, a plurality of containers, at least one partition detachably arranged in the box along a preset direction, and an air supply device; each partition divides the box into a plurality of test chambers, the number of test chambers is the same as that of containers, and they correspond uniquely, and each container is interconnected with the uniquely corresponding test chamber; after the partition between any two adjacent test chambers is removed, the two adjacent test chambers are interconnected; the air supply device is used to transport gas into each container to stir the sand and dust in each container. Compared with the prior art, it can not only meet the test of the sand and dust performance of the safety belt, but also when the partition between any two adjacent test chambers is removed, the two adjacent test chambers can be connected, and the air curtain and air bag can be placed, which meets the test requirements for the sand and dust performance of the air curtain or air bag.

Description

Technical Field

[0001] The embodiments of the present invention relate to a testing mechanism, and in particular to a sand and dust testing device and a safety belt stretching testing mechanism. Background Art

[0002] Seat belts, airbags and air curtains are the basic protective devices that protect the driver and passengers when the vehicle is in motion and when the vehicle is in collision. They are an important part of the vehicle safety system. Therefore, the reliability test of seat belts, airbags and air curtains is of great significance for testing the safety performance of seat belts, airbags and air curtains. At the same time, when the vehicle is in use or parked, the seat belt motor is very likely to be affected by sand and dust in the environment. Sand and dust can corrode and damage the surface of motor products. It can block the motor channel and filter, and can drill into cracks, gaps, bearings, joints, and seals, causing various harmful effects; it can cause active parts and mating parts to stick and block (such as switch transfer failure, etc.); it can cause contactors and relays to not work, forming a conductive bridge and causing a short circuit, thereby affecting the function and performance of the product.

[0003] Therefore, it becomes particularly important to conveniently test the tensile performance of seat belts, as well as the sand and dust performance of seat belts, airbags and air curtains. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a sand and dust testing device and a seat belt stretching testing mechanism, which can simulate the repeated stretching of the seat belt, and at the same time simulate the operating conditions of the seat belt, airbag and air curtain in a sand and dust environment, so as to facilitate the testing of the tensile performance of the seat belt, as well as the sand and dust performance of the seat belt, airbag and air curtain.

[0005] In order to achieve the above object, the embodiment of the present invention designs a sand and dust test equipment, comprising:

[0006] Box;

[0007] A plurality of containers, each of which is arranged along a preset direction and is respectively disposed at the bottom of the box;

[0008] At least one partition is detachably arranged in the box body along the preset direction, dividing the box body into a plurality of test chambers, the number of the test chambers is the same as the number of the containers and they are uniquely corresponding, and each of the containers is respectively connected to the uniquely corresponding test chamber; after the partition between any two adjacent test chambers is removed, the two adjacent test chambers are connected to each other;

[0009] A plurality of switch doors are arranged on the box along the preset direction, the number of the switch doors is the same as the number of the test chambers and they are uniquely corresponding, and any of the switch doors is used to open or close the uniquely corresponding test chamber;

[0010] A gas supply device, connected to each of the containers, for conveying gas into each of the containers to stir the sand and dust in each of the containers;

[0011] A main control device is communicatively connected with the gas supply device and is used to control the gas supply device to deliver gas to one or more of the containers.

[0012] In addition, an embodiment of the present invention further provides a seat belt stretching test mechanism, which is arranged in any one of the test chambers of the sand and dust test equipment described above, and comprises:

[0013] The test frame comprises: an upper support frame, a lower support frame arranged opposite to the upper support frame, and at least one connecting column connecting the upper support frame and the lower support frame;

[0014] A winding wheel mechanism is arranged on the upper support frame; the winding wheel mechanism comprises: a plurality of winding wheels and a driving device arranged on the upper support frame; the driving device is connected to each of the winding wheels and is used to drive each of the winding wheels to rotate synchronously, and the driving device is also connected to the main control device for communication;

[0015] A guide mechanism is arranged on the lower support frame; the guide mechanism includes: a plurality of guide shafts, the number of the guide shafts is the same as the number of the winding wheels, and they correspond uniquely; each guide shaft and the uniquely corresponding winding wheel are arranged opposite to each other, and the axial direction of each guide shaft is parallel to the axial direction of the uniquely corresponding winding wheel.

[0016] Compared with the prior art, since the box is separated by multiple partitions, multiple test chambers are formed, and each test chamber is interconnected with the unique corresponding containers at the bottom of the box, and each container is connected to the gas supply device, so that the gas supply device can transport gas to one or more containers, thereby stirring the sand and dust in the corresponding container to achieve the dust effect in the corresponding test chamber. In actual application, a safety belt stretching test mechanism can be set in any test chamber, and through the cooperation of each winding wheel of the winding wheel mechanism and each guide shaft of the guide mechanism, and under the driving action of the driving device, each winding wheel can repeatedly reel in multiple safety belts respectively, so that multiple safety belts can be stretched, which can not only meet the test requirements of the tensile performance of multiple safety belts at the same time, but also combine with the dust environment in the test chamber to simulate the use conditions of safety belts and airbags in a sand and dust environment. Moreover, when the partition between any two adjacent test cavities is removed, the two adjacent test cavities can be connected, so that the box can place the air curtain and the airbag, thereby simulating the operating conditions of the air curtain in a sandy and dusty environment. Therefore, the performance of the seat belts, airbags and air curtains in a sandy and dusty environment can be conveniently tested.

[0017] Further, the box body includes: a top plate, and a bottom plate opposite to the top plate;

[0018] Along the preset direction, the top plate is provided with a plurality of top chutes on one side relative to the bottom plate, and the bottom plate is provided with a plurality of bottom chutes on one side relative to the top plate; the number of the top chutes and the bottom chutes is the same as the number of the partition plates, and they are uniquely corresponding;

[0019] Each of the top sliding grooves and the only corresponding bottom sliding groove forms a clamping portion into which the partition plate can slide.

[0020] Furthermore, any side of the box along the preset direction is not closed to form an opening, and the sand and dust testing equipment also includes: a side door movably arranged on the box, and the side door is used to open or close the opening.

[0021] Furthermore, each of the containers is a conical funnel, and the opening of each of the conical funnels faces the only corresponding test cavity.

[0022] Furthermore, the sand and dust testing equipment also includes: a vibration motor respectively arranged on each of the containers.

[0023] Furthermore, each of the switch doors is provided with a transparent window.

[0024] Furthermore, the sand and dust test equipment further comprises: limit switches respectively arranged on each of the switch doors, and each of the limit switches is communicatively connected with the main control device;

[0025] When any of the switch doors opens the uniquely corresponding test cavity, the limit switch on the switch door is triggered and sends an alarm signal to the main control device.

[0026] Furthermore, the air supply equipment includes: a vacuum pumping device, an air inlet pipeline assembly connected to the vacuum pumping device, and a plurality of air outlet pipeline assemblies connected to the air inlet pipeline assembly;

[0027] The number of the air outlet pipeline components is the same as the number of the containers and they are uniquely corresponding, and each of the air outlet pipeline components is connected to the uniquely corresponding container;

[0028] The vacuum pumping device, the air inlet pipeline assembly and each of the air outlet pipeline assemblies are all communicatively connected to the main control device.

[0029] Furthermore, the air intake pipeline assembly includes:

[0030] A main pressure regulating valve connected to the gas outlet of the vacuum pumping device;

[0031] An air intake manifold connected to the air outlet end of the main pressure regulating valve;

[0032] Each of the air outlet pipeline components comprises:

[0033] An air outlet pipe is connected to the air inlet manifold and the only corresponding container respectively;

[0034] A pressure sensor, arranged on the air outlet pipe, for detecting the air intake pressure;

[0035] A pressure regulating valve, arranged on the gas outlet pipeline, for regulating the gas pressure in the gas outlet pipeline;

[0036] A solenoid valve, arranged on the air outlet pipeline, for connecting or cutting off the air outlet pipeline;

[0037] Wherein, the main pressure regulating valve, each of the pressure sensors, each of the pressure regulating valves and each of the solenoid valves are all communicatively connected to the main control device.

[0038] Furthermore, the sand and dust test equipment comprises:

[0039] A plurality of pressure relief pipes are arranged on the box body along the preset direction; the number of the pressure relief pipes is the same as the number of the test chambers and they are uniquely corresponding; each of the pressure relief pipes is respectively connected to the uniquely corresponding test chamber;

[0040] A plurality of filters; the number of the filters is the same as the number of the pressure relief pipes and they are uniquely corresponding; each of the filters is arranged on each of the uniquely corresponding pressure relief pipes.

[0041] The winding wheel and the guide shaft are both provided with three, and the upper support frame comprises: an upper support plate, and three upper frame bodies equidistantly arranged around the axis direction of the upper support plate, and a winding wheel is provided between each two adjacent upper frame bodies;

[0042] The lower support frame comprises: a lower support plate, and three lower frame bodies equidistantly arranged around the axis direction of the lower support plate, wherein the lower frame bodies correspond uniquely to the guide shafts, and each guide shaft is arranged on the uniquely corresponding lower frame body;

[0043] The driving device comprises: three transmission shafts arranged around the axis direction of the upper support plate, each transmission shaft uniquely corresponds to each winding wheel, and each transmission shaft is coaxially connected to the unique corresponding winding wheel, and each adjacent two upper frames are penetrated by the same transmission shaft and are rotatably connected to the transmission shaft; wherein, around the axis direction of the upper support plate, each transmission shaft is meshed and driven in sequence through a gear pair;

[0044] The driving device further comprises: a driving element connected to any one of the transmission shafts, wherein the driving element is used to drive the transmission shaft to rotate.

[0045] Furthermore, the upper support plate and the lower support plate are coaxially arranged.

[0046] Furthermore, each of the upper frames comprises:

[0047] A fixing plate, arranged on a side of the upper supporting plate relative to the lower supporting frame;

[0048] A first connecting plate and a second connecting plate are respectively formed by vertically extending from the fixing plate toward the lower supporting frame;

[0049] Among them, around the axial direction of the upper support plate, the first connecting plate of any upper frame body is arranged opposite to and parallel to the second connecting plate of one of the upper frame bodies adjacent to it, and the first connecting plate and the second connecting plate arranged opposite to and parallel to each other are penetrated by the same transmission shaft and are rotatably connected to the transmission shaft.

[0050] Furthermore, an angle is formed between the first connecting plate and the second connecting plate of each upper frame, and the angle is 120 degrees.

[0051] Furthermore, the three transmission shafts are respectively: a main transmission shaft, a first slave transmission shaft and a second slave transmission shaft, the main transmission shaft is connected to the driving element, and both ends of the first slave transmission shaft are respectively meshed with the main transmission shaft and the second slave transmission shaft through the gear pair for transmission;

[0052] The gear pair comprises: a first bevel gear and a second bevel gear meshing with the first bevel gear;

[0053] In one of the gear pairs, the first bevel gear of the gear pair is coaxially connected to one end of the first slave transmission shaft, and the second bevel gear of the gear pair is coaxially connected to the main transmission shaft;

[0054] In another gear pair, the first bevel gear of the gear pair is coaxially connected to the other end of the first slave transmission shaft, and the second bevel gear of the gear pair is coaxially connected to the second slave transmission shaft.

[0055] Furthermore, each guide shaft is slidable on the unique corresponding lower frame body along an axial direction perpendicular to the lower support plate.

[0056] Further, the winding wheel comprises: a cylinder and a cover plate coaxially connected to the only corresponding transmission shaft;

[0057] The cylinder has a receiving space along the axis direction of the only corresponding transmission shaft, the cover is detachably arranged on the cylinder and coaxially arranged with the cylinder, and the cover is used to open or close the receiving space;

[0058] A clamping groove is also provided on the cylinder wall of the cylinder along the axial direction of the cylinder, and the clamping groove is used for the front end of the safety belt to be clamped into the accommodating space. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a structural schematic diagram of a sand and dust test device according to a first embodiment of the present invention;

[0060] Figure 2 for Figure 1 A side view schematic diagram of

[0061] Figure 3 It is a schematic diagram of the structure of the connection between the gas supply device and each container in the first embodiment of the present invention;

[0062] Figure 4 for Figure 1 A schematic diagram of the main view;

[0063] Figure 5 It is a pipeline module block diagram of the gas supply equipment in the first embodiment of the present invention;

[0064] Figure 6 A circuit module block diagram of a sand and dust test device according to a first embodiment of the present invention;

[0065] Figure 7 It is a structural schematic diagram of a safety belt tension testing mechanism according to a second embodiment of the present invention;

[0066] Figure 8 It is an exploded schematic diagram of a reel in a safety belt tension testing mechanism according to a second embodiment of the present invention;

[0067] Fig. 9 This is a circuit module block diagram of a seat belt tensioning test mechanism in a sand and dust test device according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0069] The first embodiment of the present invention relates to a sand and dust test device, such as Figure 1 and Figure 3 As shown, it includes: a box body 10 and a plurality of containers 20 . Each container 20 is arranged along a preset direction and is respectively disposed at the bottom of the box body 10 .

[0070] Secondly, if Figure 1 and Figure 4 As shown, the sand and dust test equipment of this embodiment further includes: at least one partition 30, each partition 30 is detachably arranged in the box body 10 along a preset direction, and divides the box body 10 into a plurality of test chambers 105. In addition, the number of test chambers 105 is the same as the number of containers 20, and they are uniquely corresponding, and each container 20 is respectively connected to the uniquely corresponding test chamber 105. After the partition 30 between any two adjacent test chambers 105 is removed, the two adjacent test chambers 105 are connected to each other.

[0071] In addition, if Figure 1 As shown, the sand and dust testing equipment of this embodiment also includes: a plurality of switch doors 40, each of which is arranged on the box body 10 along a preset direction, and the number of the switch doors 40 is the same as the number of the test chambers 105, and they correspond uniquely, and any switch door 40 is used to open or close the uniquely corresponding test chamber 105.

[0072] In addition, if Figure 1 As shown, the sand and dust testing equipment of this embodiment further includes: a gas supply device 50 connected to each container 20 , and the gas supply device 50 is used to transport gas into each container 20 to stir the sand and dust in each container 20 .

[0073] Finally, if Figure 2 and Figure 6As shown, the sand and dust testing equipment of this embodiment further includes: a main control device, which is communicatively connected with the gas supply device and is used to control the gas supply device to deliver gas to one or more containers.

[0074] It is not difficult to see from the above content that since the box 10 is separated by multiple partitions 30, multiple test chambers 105 are formed, and each test chamber 105 is interconnected with each container 20 that is uniquely corresponding to the bottom of the box 10, and each container 20 is connected to the gas supply device 50, so that the gas supply device 50 can deliver gas to one or more containers 20, thereby stirring the sand and dust in the corresponding container 20 to achieve the dust effect in the corresponding test chamber 105. In actual application, a single test chamber 105 can simulate the use of a safety belt or an airbag in a sand and dust environment, and when the partition 30 between any two adjacent test chambers 105 is removed, the connection between the two adjacent test chambers 105 can be achieved. Therefore, the staff can appropriately remove one or more partitions 30 according to the length of the air curtain to achieve the placement of the air curtain in the box 10, thereby simulating the use of the air curtain in a sand and dust environment, so that the performance of the safety belt, airbag and air curtain in a sand and dust environment can be conveniently tested.

[0075] Specifically, in this embodiment, if Figure 1 As shown, the box body 10 includes: a top plate 101, a bottom plate 102 opposite to the top plate 101, a first side plate 103 and a second side plate 104 connecting the top plate 101 and the bottom plate 102. In addition, along the preset direction, the top plate 101 is provided with a plurality of top chutes (not shown in the figure) on one side relative to the bottom plate 102, and the bottom plate 102 is provided with a plurality of bottom chutes (not shown in the figure) on one side relative to the top plate 101. The number of the top chutes and the bottom chutes is the same as the number of the partitions 30, and they are uniquely corresponding. And each top chute is respectively provided with a clamping portion (not shown in the figure) into which the partition 30 can slide, between the uniquely corresponding bottom chutes. Then, it should be noted that in actual application, the partition 30 can also be assembled with the top plate 101 and the bottom plate 102 in other ways, and in this embodiment, the assembly method between the partition 30 and the top plate 101 and the bottom plate 102 is not limited.

[0076] In addition, if Figure 1As shown, in this embodiment, each switch door 40 can be rotatably arranged on the box body 10, such as in a hinged manner, so that each switch door 40 can open or close the unique corresponding test chamber 105. In addition, it should be noted that the sand and dust test equipment of this embodiment also includes: limit switches (not shown in the figure) respectively arranged on each switch door 40, and each limit switch (not shown in the figure) is connected to the main control device for communication. When any switch door 40 opens the unique corresponding test chamber 105, the limit switch on the switch door 40 is triggered and sends an alarm signal to the main control device. It is not difficult to see that the staff can judge whether the corresponding test chamber 105 is closed through the alarm signal received by the main control device to prevent the test chamber 105 from leaking.

[0077] Furthermore, it is worth mentioning that Figure 2 As shown, the sand and dust test equipment of this embodiment also includes: a vibration motor 60 arranged on each container 20, and in this embodiment, each vibration motor 60 is connected to the main control device for communication, so that the main control device can control the opening and closing of each vibration motor 60. Therefore, after the corresponding test chamber 105 completes the test of the sand and dust performance of the seat belt, airbag or air curtain, the main control device can open the corresponding vibration motor 60, so that the corresponding container 20 can allow the sand and dust to quickly fall to the bottom of the container 20 under the vibration of the vibration motor 60, so as to realize the collection of sand and dust. In addition, in order to prevent the sand and dust from adhering to the wall of the container 20, as shown in FIG. Figure 1 , Figure 2 and Figure 3 As shown, the container 20 used in the present embodiment is a conical funnel, and the opening of the conical funnel (not shown in the figure) is opposite to the test area 41 of the box body 4, so that the diameter of the opening of the container 20 can remain unchanged. Therefore, when the gas supply equipment 50 transports gas into the conical funnel, it will not affect the dust-raising effect of the container 20. At the same time, after completing the sand and dust test of the seat belt, airbag or air curtain, with the help of the structure of the conical funnel of the container 20 and the vibration effect of the vibration motor 60, the sand and dust in the container 20 can be quickly collected, thereby improving the efficiency of the sand and dust test.

[0078] In addition, as a preferred solution, in this embodiment, Figure 1 As shown, any side of the box body 10 along the preset direction is not closed to form an opening (not shown in the figure), that is, the opening can be opened on the first side plate 103, or can also be opened on the second side plate 104. In this embodiment, the opening is opened on the second side plate 104 as an example for description. Figure 1 and Figure 4As shown, the sand and dust test equipment of this embodiment further includes: a side door 70 movably arranged on the box body 10, and the side door 70 is arranged on the second side plate 104, and can be used to open or close the opening. It is not difficult to see that when testing the sand and dust performance of a long product such as an air curtain, the air curtain can be directly inserted into the box body 10 from the end of the box body 10 by means of the opening, thereby avoiding interference caused by the box body 10 when placing the air curtain, thereby further facilitating the placement of the air curtain in the box body 10.

[0079] In addition, in this embodiment, in order to enable the gas supply device 50 to deliver gas to each container 20, as shown in FIG. Figure 2 , Figure 3 and Figure 5 As shown, the gas supply device 50 includes: a vacuum pumping device (not shown in the figure), an air inlet pipeline assembly 501 connected to the vacuum pumping device, and a plurality of air outlet pipeline assemblies 502 connected to the air inlet pipeline assembly 501. In addition, the number of air outlet pipeline assemblies 502 is the same as the number of containers 20, and they are uniquely corresponding, and each air outlet pipeline assembly 502 is connected to the uniquely corresponding container 20. In addition, in combination with Figure 2 As shown, the vacuum pumping device, the air inlet pipeline assembly 501 and each air outlet pipeline assembly 502 are all connected to the main control device for communication.

[0080] Specifically, in this embodiment, if Figure 2 , Figure 3 and Figure 5 As shown, the vacuum pump is used as the vacuum device, and the air intake pipeline assembly 501 includes: a main pressure regulating valve 5011 connected to the air outlet of the vacuum pump, and an air intake main pipe 5012 connected to the air outlet of the main pressure regulating valve 5011. Figure 2 , Figure 3 and Figure 5 As shown, each outlet pipeline assembly 502 includes: an outlet nozzle 5025 arranged on the container 20, an outlet pipeline 5021 connected to the air intake manifold 5012 and the outlet nozzle 5025 on the only corresponding container 20, a pressure sensor 5022, a pressure regulating valve 5023 and a solenoid valve 5024 arranged on the outlet pipeline 5021. Among them, the pressure sensor 5022 is used to detect the intake pressure, the pressure regulating valve 5023 is used to adjust the air pressure in the outlet pipeline 5021, and the solenoid valve 5024 is used to conduct or cut off the outlet pipeline 5021, and, in combination Figure 6As shown, the main pressure regulating valve 5011, each pressure sensor 5022, each pressure regulating valve 5023 and each solenoid valve 5024 are all connected to the main control device for communication. In actual application, the main control device can pre-set the vacuum pressure, operation time, operation cycle and waiting time between each operation cycle of each outlet pipeline component 502, and during testing, the main control device can obtain the pressure value detected by each pressure sensor 5024, and can directly control the main pressure regulating valve 5011, each pressure regulating valve 5023 and each solenoid valve 5024 according to the above-mentioned set parameters, so as to automatically complete the performance test of the safety belt, airbag and air curtain in the sand and dust environment.

[0081] In addition, in order to further improve the dust removal effect in each test chamber 105, as Figure 2 and Figure 3 As shown, the air outlet nozzle 5025 can be arranged at the bottom of the container 20, so that the air outlet nozzle 5025 can deliver gas from the bottom of the container 20 into the container 20, so as to fully stir the sand and dust in the container 20. At the same time, in order to avoid excessive internal pressure of the test chamber 105 during the test process, the sand and dust test box of this embodiment also includes: pressure relief pipes 80 respectively arranged on the box body 10, and each pressure relief pipe 80 is connected to each test chamber 20 respectively. In addition, the sand and dust test box of this embodiment also includes: filters 90 arranged on each pressure relief pipe 80. Among them, each pressure relief pipe 80 is used to relieve pressure inside each corresponding test chamber 105 to prevent the test chamber 105 from being damaged due to excessive internal pressure, and the filter 90 can prevent sand and dust from escaping from the pressure relief pipe 80 to the outside of the box body 10 and polluting the environment.

[0082] The second embodiment of the present invention relates to a seat belt stretching test mechanism, which is arranged in any test cavity 105 of the sand and dust test equipment described in the first embodiment. In this embodiment, in order to make more effective use of each test cavity 105, the seat belt stretching test mechanism of this embodiment can be arranged in the test cavity 105 adjacent to the first side panel 103. This ensures that subsequent test cavities 105 can be interconnected after the corresponding partitions 30 are removed, so as to achieve simultaneous testing of seat belts, airbags and air curtains, thereby improving test efficiency.

[0083] And, if Figure 7 and Figure 8 As shown, the safety belt tension testing mechanism of this embodiment includes: a testing frame 1, a winding wheel mechanism 2 and a guiding mechanism 3.

[0084] Among them, Figure 3 As shown, the test frame 1 includes: an upper support frame 11 , a lower support frame 12 arranged opposite to the upper support frame 11 , and at least one connecting column 13 connecting the upper support frame 11 and the lower support frame 12 .

[0085] In addition, in this embodiment, if Figure 3 As shown, the winding wheel mechanism 2 is arranged on the upper support frame 11, and the guide mechanism 3 is arranged on the lower support frame 12. The winding wheel mechanism 2 includes: a plurality of winding wheels 21, a driving device 22 arranged on the upper support frame 11, and the driving device 22 is connected to each winding wheel 21, and is used to drive each winding wheel 21 to rotate synchronously. The guide mechanism 3 includes: a plurality of guide shafts 31, and the number of guide shafts 31 is the same as the number of winding wheels 21, and they are uniquely corresponding. Each guide shaft 31 is arranged opposite to the unique corresponding winding wheel 21, and the axial direction of each guide shaft 31 is parallel to the axial direction of the unique corresponding winding wheel 21.

[0086] It is not difficult to see from the above content that in actual application, through the cooperation between the reel wheels 21 of the reel mechanism and the guide shafts 31 of the guide mechanism 3, and under the driving action of the driving device, the reel wheels 21 can repeatedly reel up multiple seat belts respectively, thereby stretching multiple seat belts, which can not only meet the test requirements for the tensile performance of the seat belts, but also improve the test efficiency of the tensile performance of the seat belts because multiple seat belts can be stretched synchronously at the same time.

[0087] In addition, in this embodiment, Fig. 9 As shown, the main control device is also connected to the driving device 22 for communication, and the main control device is used to set the stretching amount and stretching cycle number of the safety belt, and the main control device is also used to control the driving device 22 to drive each winding wheel 21 to rotate forward and reverse according to the set stretching amount and stretching cycle number. Thereby, the main control device realizes automatic control of the stretching test mechanism.

[0088] Specifically, in this embodiment, first, Figure 7 and Figure 8 As shown, there are three winding wheels 21 and three guide shafts 31, and the upper support frame 11 includes: an upper support plate 111, three upper frame bodies 112 equidistantly arranged around the axis direction of the upper support plate 111, and a winding wheel 21 is arranged between each two adjacent upper frame bodies 112. The lower support frame 12 includes: a lower support plate 121, and three lower frame bodies 122 equidistantly arranged around the axis direction of the lower support plate 121, and the lower frame bodies 122 are uniquely corresponding to the guide shafts 31, and each guide shaft 31 is arranged on the unique corresponding lower frame body 122. In addition, the lower support plate 121 is coaxially arranged with the upper support plate 111.

[0089] Secondly, in this embodiment, if Figure 7 and Figure 8As shown, the driving device 22 includes: three transmission shafts 221 arranged around the axis direction of the upper support plate 111, each transmission shaft 221 uniquely corresponds to each winding wheel 21, and each transmission shaft 221 is coaxially connected to the unique corresponding winding wheel 21, and each adjacent two upper frames 112 are penetrated by the same transmission shaft 221 and are rotatably connected to the transmission shaft 221. At the same time, as Figure 1 As shown, around the axis direction of the upper support plate 111, each transmission shaft 221 is meshed and driven in sequence through a gear pair 222. In addition, the driving device 22 also includes: a driving element connected to any transmission shaft 221, and in this embodiment, the driving element is a servo motor (not shown in the figure), which can directly drive the transmission shaft 221 connected thereto to rotate through the servo motor, and the servo motor can also be connected to the main control device for communication, so that the servo motor can synchronously drive each reel 21 to rotate through the meshing transmission of each transmission shaft 221 by each gear pair 222 under the control of the main control device, thereby realizing the tensile test of each reel 21 on each safety belt.

[0090] In addition, it is worth mentioning that in this embodiment, if Figure 7 and Figure 8 As shown, each upper frame 112 includes: a fixing plate 1121 disposed on one side of the upper support plate 111 relative to the lower support frame 12, and a first connecting plate 1122 and a second connecting plate 1123 extending vertically from the fixing plate 1121 toward the lower support frame 12. Figure 7 As shown, around the axis direction of the upper support plate 111, the first connecting plate 1122 of any upper frame body 112 is arranged opposite and parallel to the second connecting plate 1123 of one of the upper frame bodies 112 adjacent thereto, and the first connecting plate 1122 and the second connecting plate 1123 arranged opposite and parallel to each other are penetrated by the same transmission shaft 221 and are rotatably connected to the transmission shaft 221. Specifically, in this embodiment, Figure 8 As shown, there is an angle of 120 degrees between the first connecting plate 1122 and the second connecting plate 1123 of each upper frame body 112. At the same time, since each upper frame body 112 is equidistantly arranged around the axial direction of the upper support plate 11, the first connecting plate 1122 of any upper frame body 112 will inevitably be in parallel with the second connecting plate 1123 of one of the adjacent upper frame bodies 112, so that the transmission shaft 221 can be conveniently passed through the first connecting plate 1122 and the second connecting plate 1123 of two adjacent upper frames 112. At the same time, in order to meet the rotation of the rotating shaft 221, bearings 1124 can be set in the first connecting plate 1122 and the second connecting plate 1123 of each upper frame body 112, and a rotating connection between the rotating shaft 221 and the first connecting plate 1122 and the second connecting plate 1123 can be formed through the bearing 1124.

[0091] In addition, it should be noted that, in this embodiment, Figure 8 As shown, the three transmission shafts 221 are respectively: a main transmission shaft 221A, a first secondary transmission shaft 221B and a second secondary transmission shaft 221C. Figure 1 As shown, the main transmission shaft 221A is connected to the servo motor, and the two ends of the first slave transmission shaft 221B are respectively meshed with the main transmission shaft 221A and the second slave transmission shaft 221C through the gear pair 222 for transmission.

[0092] Specifically, if Figure 7 and Figure 8 As shown, the gear pair 222 specifically includes: a first bevel gear 2221, and a second bevel gear 2222 meshing with the first bevel gear 2221. In one of the gear pairs 222, the first bevel gear 2221 of the gear pair 222 is coaxially connected to one end of the first slave transmission shaft 221B, and the second bevel gear 2222 of the gear pair 222 is coaxially connected to the main transmission shaft 211. Similarly, in another gear pair 222, the first bevel gear 2221 of the gear pair 222 is coaxially connected to the other end of the first slave transmission shaft 221B, and the second bevel gear 2222 of the gear pair 222 is coaxially connected to the second slave transmission shaft 221C. It is not difficult to see that when the servo motor drives the main transmission shaft 221A to rotate, by means of the transmission meshing of the two gear pairs 222, the first slave transmission shaft 221B and the second slave transmission shaft 221C can follow the main transmission shaft 221A to rotate, thereby realizing the synchronous rotation of the three winding wheels 21.

[0093] In addition, as a preferred solution, in this embodiment, Figure 7 and Figure 8 As shown, each guide shaft 31 can slide on the unique corresponding lower frame 122 along the axial direction perpendicular to the lower support plate 121. Specifically, a slide groove 123 can be provided on each lower frame 122 along the axial direction perpendicular to the lower support plate 121, and each guide shaft 31 is partially inserted into the slide groove 123 of the unique corresponding lower frame 122. When the guide shaft 31 slides to a suitable position, the nut 32 can be screwed with the thread of the guide shaft 31 to achieve locking of the guide shaft 31 on the lower frame 122. It can be seen that by sliding the guide shaft 31 on the lower frame 122, the tension of the safety belt on the reel 21 can be adjusted, ensuring that the tensile testing mechanism of this embodiment can meet the tensile testing requirements of the safety belt under different tensions.

[0094] In addition, in order to achieve the winding and stretching of the safety belt when the winding wheel 21 rotates, in this embodiment, Figure 8As shown, the reel 21 includes: a cylinder 211 and a cover plate 212 coaxially connected to a unique corresponding transmission shaft 221. The cylinder 211 has a receiving space 213 along the axial direction of the unique corresponding transmission shaft 211, and the cover plate 212 is detachably arranged on the cylinder 211 and coaxially arranged with the cylinder 211. The cover plate 212 is used to open or close the receiving space 213 of the cylinder 211. In addition, as shown in FIG. Figure 2 As shown, along the axial direction of the cylinder 211, a slot 214 is further provided on the cylinder wall of the cylinder 211, and the slot 214 is used for the front end of the safety belt to be inserted into the accommodating space 213. It is not difficult to find that in the actual application process, the front end of the safety belt can be inserted into the accommodating space 213 of the cylinder 211 through the slot 214 of any winding wheel 21, so as to fix the front end of the safety belt, and at the same time, the rear end of the safety belt is sleeved on the guide shaft 31 corresponding to the winding wheel 21, so that when the winding wheel 21 is rotating, the tensile test of the safety belt can be realized by winding around the safety belt.

[0095] Furthermore, as a preferred solution, in order to prevent the safety belt from falling off due to axial sliding on the cylinder 211 of the reel 21 during the stretching process, as shown in FIG. Figure 7 and Figure 8 As shown, in this embodiment, the outer diameter of the cover plate 212 of each reel 21 should be larger than the outer diameter of the cylinder 211, and at the same time, the side of the cylinder 211 away from the cover plate 212 protrudes outward to form a flange 215. Through the cooperation of the flange 215 and the cover plate 212, the part of the safety belt wound on the cylinder 211 can be limited, so that after the safety belt is wound on the cylinder 211, it will not fall off the cylinder 211 due to axial sliding on the cylinder 211, thereby improving the reliability of the safety belt during the tensile test. And it should be noted that in this embodiment, if Figure 7 and Figure 8 As shown, the cover plate 212 and the cylinder body 211 can be locked and fixed by means of a horn screw 216, for example, Figure 8 As shown, a plurality of threaded holes 218 can be provided on one side of the cylinder 211 relative to the cover plate 212, and a plurality of positioning holes 217 through which the horn screws 216 can pass can be provided on the cover plate 212, and the number of the positioning holes 217 is the same as the number of the threaded holes 218, and they are uniquely corresponding. In the actual assembly process, the positioning holes 217 on the cover plate 212 can be aligned with the threaded holes 218 on the cylinder 211, and then the cover plate 212 and the cylinder 211 can be locked and fixed by means of the horn screws 216 and the threads of the horn screws 216 and the threaded holes 218. The use of the horn screws 216 can avoid the use of tools, and the staff can directly lock it manually, making the assembly of the cylinder 211 and the cover plate 212 more convenient.

[0096] In addition, it is worth mentioning that Fig. 9 As shown, the main control device is also used to monitor the torque of the servo motor in real time when it is working, and when the torque of the servo motor is greater than the preset maximum torque, the main control device can issue an alarm to remind the staff to stop the test immediately, thereby protecting the servo motor and avoiding overload and damage to the servo motor.

[0097] Furthermore, it is not difficult to see from the above contents that since the safety belt tension test mechanism of this embodiment is arranged in any one of the test chambers 105 of the sand and dust test equipment of the first embodiment, Figure 7 and Figure 8 It is not difficult to see that in this embodiment, with the help of the upper through holes 113 distributed on the upper support plate 111 of the upper support frame 11 and the lower through holes 124 distributed on the lower support plate 121 of the lower support frame 12, sand and dust can be effectively prevented from accumulating on the upper support plate 111 and the lower support plate 121.

[0098] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A sand and dust test equipment, characterized in that: include: Box; A plurality of containers, each of which is arranged along a preset direction and is respectively disposed at the bottom of the box; At least one partition is detachably arranged in the box body along the preset direction, dividing the box body into a plurality of test chambers, the number of the test chambers is the same as the number of the containers and they are uniquely corresponding, and each of the containers is respectively connected to the uniquely corresponding test chamber; after the partition between any two adjacent test chambers is removed, the two adjacent test chambers are connected to each other; A plurality of switch doors are arranged on the box along the preset direction, the number of the switch doors is the same as the number of the test chambers and they are uniquely corresponding, and any of the switch doors is used to open or close the uniquely corresponding test chamber; A gas supply device, connected to each of the containers, for conveying gas into each of the containers to stir the sand and dust in each of the containers; A main control device, which is in communication with the gas supply device and is used to control the gas supply device to deliver gas to one or more of the containers; The box body comprises: a top plate and a bottom plate opposite to the top plate; Along the preset direction, the top plate is provided with a plurality of top chutes on one side relative to the bottom plate, and the bottom plate is provided with a plurality of bottom chutes on one side relative to the top plate; the number of the top chutes and the bottom chutes is the same as the number of the partition plates, and they are uniquely corresponding; Each of the top slide grooves and the only corresponding bottom slide groove form a clamping portion into which the partition plate can slide; Any side of the box along the preset direction is not closed to form an opening, and the sand and dust testing equipment also includes: a side door movably arranged on the box, and the side door is used to open or close the opening.

2. The dust test equipment according to claim 1, characterized in that: Each of the containers is a conical funnel, and the opening of each conical funnel faces the unique corresponding test cavity.

3. The dust test equipment according to claim 1, characterized in that: The sand and dust testing equipment also includes: a vibration motor respectively arranged on each of the containers.

4. The dust test equipment according to claim 1, characterized in that: Each of the switch doors is provided with a transparent window.

5. The dust test equipment according to claim 1, characterized in that: The sand and dust test equipment further includes: limit switches respectively arranged on each of the switch doors, and each of the limit switches is communicatively connected with the main control device; When any of the switch doors opens the uniquely corresponding test cavity, the limit switch on the switch door is triggered and sends an alarm signal to the main control device.

6. The dust test equipment according to claim 1, characterized in that: The air supply equipment comprises: a vacuum pumping device, an air inlet pipeline assembly connected to the vacuum pumping device, and a plurality of air outlet pipeline assemblies connected to the air inlet pipeline assembly; The number of the air outlet pipeline components is the same as the number of the containers and they are uniquely corresponding, and each of the air outlet pipeline components is connected to the uniquely corresponding container; The vacuum pumping device, the air inlet pipeline assembly and each of the air outlet pipeline assemblies are all communicatively connected to the main control device.

7. The dust test equipment according to claim 6, characterized in that: The air inlet pipeline assembly comprises: a main pressure regulating valve connected to the air outlet end of the vacuum pumping device; An air intake manifold connected to the air outlet end of the main pressure regulating valve; Each of the air outlet pipeline components comprises: An air outlet pipe is connected to the air inlet manifold and the only corresponding container respectively; A pressure sensor, arranged on the air outlet pipe, for detecting the air intake pressure; A pressure regulating valve, arranged on the gas outlet pipeline, for regulating the gas pressure in the gas outlet pipeline; A solenoid valve, arranged on the air outlet pipeline, for connecting or cutting off the air outlet pipeline; Wherein, the main pressure regulating valve, each of the pressure sensors, each of the pressure regulating valves and each of the solenoid valves are all communicatively connected to the main control device.

8. The dust test equipment according to any one of claims 1 to 7, characterized in that: The sand and dust test equipment comprises: a plurality of pressure relief pipes, which are arranged on the box along the preset direction; the number of the pressure relief pipes is the same as the number of the test chambers, and they are uniquely corresponding; each of the pressure relief pipes is respectively connected to the uniquely corresponding test chamber; A plurality of filters; the number of the filters is the same as the number of the pressure relief pipes and they are uniquely corresponding; each of the filters is arranged on each of the uniquely corresponding pressure relief pipes.

9. A seat belt stretching test mechanism, characterized in that: The seat belt tension test mechanism is arranged in any one of the test chambers of the sand and dust test equipment according to any one of claims 1 to 8, and the seat belt tension test mechanism comprises: a test frame, comprising: an upper support frame, a lower support frame arranged opposite to the upper support frame, and at least one connecting column connecting the upper support frame and the lower support frame; A winding wheel mechanism is arranged on the upper support frame; the winding wheel mechanism comprises: a plurality of winding wheels and a driving device arranged on the upper support frame; the driving device is connected to each of the winding wheels and is used to drive each of the winding wheels to rotate synchronously, and the driving device is also connected to the main control device for communication; A guide mechanism is arranged on the lower support frame; the guide mechanism includes: a plurality of guide shafts, the number of the guide shafts is the same as the number of the winding wheels, and they correspond uniquely; each guide shaft and the uniquely corresponding winding wheel are arranged opposite to each other, and the axial direction of each guide shaft is parallel to the axial direction of the uniquely corresponding winding wheel.

10. The seat belt tension testing mechanism according to claim 9, characterized in that: The winding wheel and the guide shaft are both provided with three, and the upper support frame comprises: an upper support plate, and three upper frame bodies equidistantly arranged around the axis direction of the upper support plate, and a winding wheel is provided between each two adjacent upper frame bodies; The lower support frame comprises: a lower support plate, and three lower frame bodies equidistantly arranged around the axis direction of the lower support plate, wherein the lower frame bodies correspond uniquely to the guide shafts, and each guide shaft is arranged on the uniquely corresponding lower frame body; The driving device comprises: three transmission shafts arranged around the axis direction of the upper support plate, each transmission shaft uniquely corresponds to each winding wheel, and each transmission shaft is coaxially connected to the unique corresponding winding wheel, and each adjacent two upper frames are penetrated by the same transmission shaft and are rotatably connected to the transmission shaft; wherein, around the axis direction of the upper support plate, each transmission shaft is meshed and driven in sequence through a gear pair; The driving device further comprises: a driving element connected to any one of the transmission shafts, wherein the driving element is used to drive the transmission shaft to rotate.

11. The seat belt tension testing mechanism according to claim 10, characterized in that: The upper support plate and the lower support plate are coaxially arranged.

12. The seat belt tension testing mechanism according to claim 10, characterized in that: Each of the upper frame bodies comprises: a fixing plate, arranged on a side of the upper support plate relative to the lower support frame; A first connecting plate and a second connecting plate are respectively formed by vertically extending from the fixing plate toward the lower supporting frame; Among them, around the axial direction of the upper support plate, the first connecting plate of any upper frame body is arranged opposite to and parallel to the second connecting plate of one of the upper frame bodies adjacent to it, and the first connecting plate and the second connecting plate arranged opposite to and parallel to each other are penetrated by the same transmission shaft and are rotatably connected to the transmission shaft.

13. The seat belt tension testing mechanism according to claim 12, characterized in that: An angle is formed between the first connecting plate and the second connecting plate of each upper frame, and the angle is 120 degrees.

14. The seat belt tension testing mechanism according to claim 10, characterized in that: The three transmission shafts are respectively: a main transmission shaft, a first slave transmission shaft and a second slave transmission shaft, the main transmission shaft is connected to the driving element, and two ends of the first slave transmission shaft are respectively meshed with the main transmission shaft and the second slave transmission shaft through the gear pair for transmission; The gear pair comprises: a first bevel gear and a second bevel gear meshing with the first bevel gear; In one of the gear pairs, the first bevel gear of the gear pair is coaxially connected to one end of the first slave transmission shaft, and the second bevel gear of the gear pair is coaxially connected to the main transmission shaft; In another gear pair, the first bevel gear of the gear pair is coaxially connected to the other end of the first slave transmission shaft, and the second bevel gear of the gear pair is coaxially connected to the second slave transmission shaft.

15. The seat belt tension testing mechanism according to claim 10, characterized in that: Each guide shaft is slidable on the unique corresponding lower frame body along an axial direction perpendicular to the lower support plate.

16. The safety belt stretching test mechanism according to any one of claims 10 to 15, characterized in that: The winding wheel comprises: a cylinder and a cover plate coaxially connected to the only corresponding transmission shaft; The cylinder has a receiving space along the axis direction of the only corresponding transmission shaft, the cover is detachably arranged on the cylinder and coaxially arranged with the cylinder, and the cover is used to open or close the receiving space; A clamping groove is also provided on the cylinder wall of the cylinder along the axial direction of the cylinder, and the clamping groove is used for the front end of the safety belt to be clamped into the accommodating space.

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