Rain test device for excavator cab

Abstract

The utility model discloses a rain test device for an excavator cab. The rain test device comprises a vibration runway, a rain device and a filtering and recycling device, the vibration runway is used for bearing the excavator, and the excavator can generate vibration in the walking process of the excavator. The raining device is used for simulating raining and carrying out a raining test on the excavator; the filtering and recycling device is used for filtering and recycling sewage generated in the excavator raining test, and the sewage is used as a water source for the raining device to simulate raining. The excavator walks on the vibration runway to simulate the severe working condition of the excavator, and the sealing performance of the excavator cab under the most unfavorable condition can be ensured by carrying out the rain test in the state. According to the rain test device, movable shielding is carried out through the two filter screens, adjustment of light rain, moderate rain, heavy rain and the like is achieved, a simple water shielding disc is used, expensive equipment such as a booster pump, a spray head and a control system is omitted, and meanwhile the water resource recycling function is achieved.

Description

Technical Field

[0001] The utility model relates to a rain shower test device for an excavator cab, belonging to the technical field of excavator testing. Background Art

[0002] After the assembly of the excavator is completed, it is necessary to check the sealing performance of the cab in a simulated rainy environment to find out whether there is any water leakage.

[0003] At present, domestic excavator manufacturers build rain shower test fields, lay rain shower test pipelines, install equipment such as booster pumps, nozzles, and control systems, which costs a lot. And the rain shower test of the excavator cab is generally carried out by spraying the cab when the excavator is in a stopped state, which cannot truly simulate the harsh working conditions of the excavator, resulting in water leakage in cabs with qualified sealing performance still occurring in the market. Summary of the Invention

[0004] The utility model provides a rain shower test device for an excavator cab, which simulates the harsh working conditions of the excavator by the excavator walking on a vibration runway. Conducting a rain shower test in this state can ensure the sealing performance of the excavator cab under the most adverse conditions. The rain shower test device realizes the adjustment of light rain, moderate rain, and heavy rain by moving and blocking with two filters. The use of a simple water shielding tray eliminates expensive equipment such as booster pumps, nozzles, and control systems, and at the same time is equipped with a function of recycling and reusing water resources.

[0005] The utility model is realized according to the following technical solutions:

[0006] A rain shower test device for an excavator cab includes:

[0007] A vibration runway for carrying the excavator and capable of generating vibration during the walking process of the excavator;

[0008] A rain shower device for simulating rain and conducting a rain shower test on the excavator;

[0009] A filtering and recycling device for filtering and recycling the sewage generated during the rain shower test of the excavator and using it as the water source for the rain shower device to simulate rain.

[0010] In some embodiments, the vibration runway includes:

[0011] A plurality of support columns;

[0012] A support plate fixed on the plurality of support columns and serving as the walking plane of the excavator;

[0013] A plurality of obstacle piers arranged on the support plate to cause the excavator to generate vibration during the walking process.

[0014] In some embodiments, the support plate is of a reinforced concrete structure and is covered with a protective steel plate thereon.

[0015] In some embodiments, the rain shower device includes:

[0016] A water shielding tray, arranged above the excavator, which is mainly composed of two flowing water filter meshes, and realizes the adjustment of the water output by moving and shielding through the two flowing water filter meshes;

[0017] A plurality of liftable blowers, installed on the vibration runway and around the excavator, are used to simulate the magnitude of the air volume, thereby changing the falling angle of the rain;

[0018] A water pumping device, including a plurality of pipelines and a plurality of water pumps, with a water pump connected in series in one pipeline, the inlet of each pipeline is connected to the water source in the filtering and recycling device, and the outlets of the plurality of pipelines converge and are connected to the water shielding tray.

[0019] In some embodiments, the water shielding tray is connected to a connecting plate located at the pipeline outlet through an adjustable connecting member; the adjustable connecting member includes a plurality of adjustable support rods, the adjustable support rods are hinged between the connecting plate and the water shielding tray, and the height of the water shielding tray is adjusted by adjusting the lengths of all the adjustable support rods; the installation angle of the water shielding tray is adjusted by adjusting the lengths of several adjustable support rods, so as to adjust the vertically downward projection area of the water shielding tray for covering the cab roofs of different types of excavators.

[0020] In some embodiments, the filtering and recycling device includes:

[0021] A gravel protection device, arranged on the support plate of the vibration runway, for coarsely filtering the gravel washed off the excavator;

[0022] A sewage and quicksand filtering device, arranged below the gravel protection device, for finely filtering and recycling the sewage flowing down from the gravel protection device to be used as the water source for the rain shower device.

[0023] In some embodiments, the gravel protection device is composed of a gravel filtering container detachably installed on the support plate and a honeycomb filter mesh located on the gravel filtering container.

[0024] In some embodiments, the sewage and quicksand filtering device includes:

[0025] A flowing sedimentation table, arranged directly below the gravel protection device, and the flowing sedimentation table has a structure that is high in the middle and low at both ends;

[0026] Fine filtering components, arranged on both sides of the flowing sedimentation table respectively, for finely filtering the sewage flowing down from the flowing sedimentation table;

[0027] A sedimentation tank is arranged at the fine filtration assembly. The water after fine filtration flows into the sedimentation tank for sedimentation, and the clarified water after sedimentation is used as the water source for the rain shower device.

[0028] In some embodiments, an automatic water replenishment calculation device is further included. When the water source in the filtration and recycling device is insufficient, the automatic water replenishment calculation device can calculate the amount of water to be replenished for the rain shower device.

[0029] In some embodiments, the automatic water replenishment calculation system includes:

[0030] A rain shower test time calculation module, which is used to calculate the time from when the excavator cab enters the area where it has never undergone a rain shower test until it is completely inside.

[0031] A rain shower test water volume calculation module, which is used to calculate the amount of water required for the excavator to conduct a rain shower test.

[0032] A tap water replenishment volume calculation module, which is used to calculate the tap water replenishment volume.

[0033] Advantages of the present utility model:

[0034] The present utility model provides a rain shower test device for an excavator cab. By simulating the harsh operating conditions of the excavator by driving on a vibration runway, conducting a rain shower test in this state can ensure the sealing performance of the excavator cab under the most adverse conditions. The rain shower test device realizes the adjustment of light rain, moderate rain, heavy rain, etc. by moving the two filters for shielding, and the use of a simple water shielding tray eliminates expensive equipment such as a booster pump, nozzles, and a control system. At the same time, it is equipped with a function of recycling and reusing water resources. Description of the Drawings

[0035] The drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0036] Figure 1 is the front view of the rain shower test device for the excavator cab of the present utility model;

[0037] Figure 2 is the top view of the rain shower test device for the excavator cab of the present utility model;

[0038] Figure 3 is the schematic diagram of the water shielding tray of the present utility model (a is the front view, b is the top view, c is the bottom view, d is the rain volume adjustment schematic diagram);

[0039] Figure 4 This is the flow chart of the rain shower test for the excavator cab of the present utility model.

[0040] Reference signs in the drawings: 1 is a sedimentation tank, 2 is a fine sand filtering container, 3 is a fine sand filter screen, 4 is a flowing sedimentation table, 5 is a support column, 6 is a honeycomb filter screen, 7 is a gravel filtering container, 8 is an obstacle pier, 9 is the excavator walking plane, 10 is a water pump, 11 is an adjustable support rod, 12 is a water shielding plate, 13 is a liftable fan, 14 is a pipeline, 110 is a connecting plate, 111 is an extendable support rod.

[0041] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific embodiments

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] The present utility model mainly solves the problem that the rain shower test of the excavator cab is generally carried out by spraying the cab in the stopped state of the excavator, which cannot truly simulate the harsh working conditions of the excavator, resulting in water leakage in the cab with qualified sealing performance still occurring in the market. In addition, most of the rain shower test sites proposed by various excavator manufacturers use expensive equipment such as booster pumps, nozzles and control systems, and less consideration is given to the recycling of water resources.

[0046] Based on this, the utility model proposes a rain test device for the cab of an excavator. The excavator is driven on a vibrating runway to simulate the adverse working conditions of the excavator. The rain test in this state can ensure the sealing performance of the cab of the excavator under the most unfavorable conditions. The rain test device uses two filter screens for mobile shielding to achieve light rain, moderate rain and heavy rain. The use of a simple water shielding plate eliminates expensive equipment such as a booster pump, a nozzle and a control system, and is also equipped with a water resource recycling function.

[0047] To achieve the above purpose, Figure 1 , Figure 2 , Figure 4 As shown, the excavator cab rain test device includes a vibration runway, a rain device and a filtering and recovery device; the vibration runway is used to carry the excavator, and the excavator can generate vibration during its walking process; the rain device is used to simulate rain and conduct a rain test on the excavator; the filtering and recovery device is used to filter and recover the sewage generated in the excavator rain test, and is used as a water source for the rain device to simulate rain.

[0048] The above-mentioned vibration runway is further described below.

[0049] The vibration runway includes an excavator walking plane 9, a protective steel plate, a support column 5 and an obstacle pier 8. The excavator walking plane 9 is a reinforced concrete structure, which is covered by a protective steel plate to prevent the crawler from crushing the plane. The vibration runway is supported by the support column 5 and is symmetrically distributed on the left and right.

[0050] Obstacle piers 8 of a certain height and number are arranged on the runway to make the excavator vibrate significantly during its travel, thus stimulating the excavator cab to vibrate strongly, so as to detect the sealing performance of various parts of the cab during the rain test, thereby evaluating the reliability of the cab.

[0051] The above-mentioned shower device is further described below.

[0052] like Figure 1 As shown, the shower device includes a water shielding plate 12, a liftable fan 13, a pipeline 14 and a water pump 10; the left and right water pumps 10 pump the clean water in the filtering and recovery device into the pipeline 14 respectively for use in the shower device. When the clean water recovery is insufficient, tap water is used to supplement it.

[0053] like Figure 3 As shown, the water shielding plate 12 is arranged above the excavator, which is mainly composed of two water flow filters. The two water flow filters are used for movable shielding to achieve adjustment of light rain, moderate rain and heavy rain. The use of a simple water shielding plate avoids the use of expensive equipment such as booster pumps, nozzles and control systems, saving the cost of rain test.

[0054] like Figure 1As shown, the liftable fans 13 on the left and right sides can be lifted according to the height of the cab, and the size of the simulated air volume can be adjusted according to the test requirements, so as to change the falling angle of the rainwater.

[0055] In a further solution, the water shielding tray 12 is connected to the connecting plate 110 located at the outlet of the pipeline 14 through an adjustable connecting member; the adjustable connecting member includes a plurality of adjustable support rods 111, and the adjustable support rods 111 are hinged between the connecting plate 110 and the water shielding tray 12. The height of the water shielding tray 12 is adjusted by adjusting the lengths of all the adjustable support rods 111; the installation angle of the water shielding tray 12 is adjusted by adjusting the lengths of several adjustable support rods 111, so as to adjust the vertically downward projection area of the water shielding tray 12 for covering the cab roofs of different types of excavators.

[0056] It should be noted that the adjustable support rod 111 can be an electric rod or a manual rod.

[0057] The above-mentioned filtering and recycling device is further described below.

[0058] The filtering and recycling device includes a gravel protection device and a sewage and quicksand filtering device; the gravel protection device is arranged on the walking plane 9 of the excavator to conduct a rough filtration on the gravel washed off the excavator; the sewage and quicksand filtering device is arranged below the gravel protection device to conduct a fine filtration and recycling on the sewage flowing down from the gravel protection device to be used as the water source for the rain shower device.

[0059] In a further solution, the gravel protection device is composed of a gravel filtering container 7 detachably installed on the walking plane 9 of the excavator and a honeycomb filter screen 6 located on the gravel filtering container 7. The honeycomb filter screen 6 prevents huge gravel and stones attached to the surfaces such as the crawler and chassis of the excavator from falling into the gravel filtering container 7, thereby damaging the filtering device. The gravel filtering container 7 can filter larger particle sand and stones and can be detachably dumped for easy daily cleaning and maintenance.

[0060] In a further solution, the sewage and quicksand filtering device includes a flowing sedimentation table 4, a fine sand filter screen 3, a fine sand filtering container 2 and a sedimentation tank 1; the flowing sedimentation table 4 is arranged directly below the gravel protection device, and the flowing sedimentation table 4 has a structure that is high in the middle and low at both ends; the fine sand filter screen 3 and the fine sand filtering container 2 are respectively arranged on both sides of the flowing sedimentation table 4 to conduct a fine filtration on the sewage flowing down from the flowing sedimentation table 4; the sedimentation tank 1 is arranged at the fine sand filtering container 2, and the water after fine filtration flows into the sedimentation tank 1 for sedimentation, and the clear water after sedimentation is used as the water source for the rain shower device.

[0061] After the sewage passes through the flowing sand settling platform 4 and then through the fine sand filter screen 3, the fine sand basically remains in the fine sand filtering container 2; the fine sand filtering container 2 is detachable, which is convenient for daily cleaning and maintenance; the sewage is filtered again and then enters the sedimentation tank 1. After sedimentation, the upper layer basically does not contain sediment and can be used as clean water.

[0062] A further solution also includes an automatic water replenishment calculation device. When the water source in the filtering and recycling device is insufficient, the automatic water replenishment calculation device can calculate the amount of water to be replenished for the rain shower device.

[0063] The above automatic water replenishment calculation device is further described below.

[0064] The automatic water replenishment calculation system includes a rain shower test time calculation module, a rain shower test water volume calculation module, and a tap water replenishment volume calculation module.

[0065] Since the cab areas of different excavator models are different, the required rain shower test time and rain shower test water volume are also different. The rain shower test time and rain shower test water volume can be determined with reference to the excavator vibration track speed, the length of the excavator cab roof, and the simulated rainfall amount.

[0066] In the rain shower test time calculation module, the rain shower test time is the time from when the excavator cab enters the area that has not undergone the rain shower test until it is completely within it. Let the excavator vibration track speed be v1 and the length of the excavator cab roof be l. Then the rain shower test time t is as shown in Equation 1.

[0067]

[0068] In the formula: t is the rain shower test time; l is the length of the excavator cab roof; v1 is the excavator vibration track speed.

[0069] In the rain shower test water volume calculation module, the rain shower test water volume V is the product of the rain shower test time t and the water flow rate Q.

[0070] The water flow rate Q is the product of the unobstructed area S of the water shielding plate and the water flow velocity v2.

[0071] Since no power equipment is used, the water velocity is in free fall motion.

[0072] The rain shower test water volume V is as shown in Equation 2.

[0073]

[0074] In the formula: V is the rain shower test water volume; Q is the water flow rate; v2 is the water flow velocity; S is the unobstructed area of the water shielding plate; g is the acceleration due to free fall; h is the distance from the rain shower device to the excavator cab roof.

[0075] In the tap water replenishment volume calculation module, the tap water replenishment volume is as shown in Equation 3.

[0076] m Tap = ρV - m pst (3)

[0077] Where: m Tap is the make-up water volume of tap water; m pst is the clear water volume of the sedimentation tank; ρ is the density of water.

[0078] In summary, the present utility model uses a excavator to get rained on when walking on a vibrating runway, which can simulate the rain test of the excavator under harsh operating conditions to ensure the sealing performance of the excavator cab under the most unfavorable conditions. This rain test device realizes the adjustment of light rain, moderate rain, heavy rain, etc. through the mobile shielding of two filters. The use of a simple water shielding tray eliminates expensive equipment such as booster pumps, nozzles, and control systems. At the same time, it is equipped with a function of recycling water resources. The terrain where the rain test device for the excavator cab is located is relatively low, and the waste water can be reused during the rain test, and the rainwater can also be filtered and recycled on rainy days, which has high environmental protection performance.

[0079] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0080] In addition, those skilled in the art can understand that although some of the embodiments described herein include certain features contained in other embodiments rather than other features, the combination of the features of different embodiments also means being within the protection scope of the present utility model and forms different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0081] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present utility model, can make some changes or modifications using the technical content prompted above into equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present utility model still fall within the scope of the present utility model.

Claims

1. An excavator cab rain test device, characterized in that: include: A vibrating runway, used to carry an excavator, and the excavator can generate vibrations during its movement; Rain shower device, used to simulate rain and conduct rain shower test on the excavator; The filtering and recycling device is used to filter and recycle the sewage generated in the rain test of the excavator, and is used as the water source for the rain device to simulate rain.

2. The excavator cab rain test device according to claim 1, characterized in that: The vibration runway comprises: Multiple support columns; A support plate, fixed to the plurality of support columns, serving as a walking surface for the excavator; A plurality of obstacle piers are arranged on the support plate to make the excavator vibrate during the moving process.

3. The excavator cab rain test device according to claim 2, characterized in that: The support plate is a reinforced concrete structure covered by a protective steel plate.

4. The excavator cab rain test device according to claim 1, characterized in that: The shower device comprises: The water shielding plate is arranged above the excavator. It is mainly composed of two water flow filters. The two water flow filters are used to move and shield to adjust the water output. A plurality of liftable fans are installed on the vibration runway and are located around the excavator to simulate the wind volume, thereby changing the falling angle of rainwater; The pumping device includes multiple pipes and multiple pumps. A pump is connected in series in one pipe. The inlet of each pipe is connected to the water source in the filtering and recovery device. The outlets of multiple pipes are connected to the water shielding plate after converging.

5. The excavator cab rain test device according to claim 4, characterized in that: The water shielding plate is connected to a connecting plate located on the pipe outlet via an adjustable connecting piece; The adjustable connecting member includes a plurality of adjustable support rods, which are hinged between the connecting plate and the water shielding tray. The height of the water shielding tray can be adjusted by adjusting the length of all the adjustable support rods. The installation angle of the water shielding tray can be adjusted by adjusting the length of several adjustable support rods, thereby adjusting the vertical downward projection area of ​​the water shielding tray to cover the roof area of ​​different types of excavator cabs.

6. The excavator cab rain test device according to claim 1, characterized in that: The filtering and recovery device comprises: A gravel protection device is arranged on the support plate of the vibration runway to roughly filter the gravel washed off by water on the excavator; The sewage flowing sand filtering device is arranged below the gravel protection device, and finely filters and recycles the sewage flowing down from the gravel protection device to serve as a water source for the shower device.

7. The excavator cab rain test device according to claim 6, characterized in that: The gravel protection device consists of a gravel filter container detachably mounted on the support plate and a honeycomb filter net located on the gravel filter container.

8. The excavator cab rain test device according to claim 6, characterized in that: The sewage quicksand filtering device comprises: A mobile sand settling platform is arranged directly below the sand and gravel protection device, and the mobile sand settling platform has a structure that is high in the middle and low at both ends; Fine filtering components are respectively arranged on both sides of the mobile sand settling table to finely filter the sewage flowing down from the mobile sand settling table; The sedimentation tank is arranged at the fine filtering component. The water after fine filtration flows into the sedimentation tank for sedimentation, and the clean water after sedimentation is used as the water source for the shower device.

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