Ice snow preparation vehicle, assembly and calculation method for water injection amount of ice snow preparation vehicle to target position

Abstract

The invention belongs to the technical field of artificial snow making, and provides an ice-like snow preparation vehicle, a final assembly and a method for calculating the amount of water injected to a target position by the ice-like snow preparation vehicle. The ice-like snow preparation vehicle includes a vehicle frame including a snowboard; the water injection assembly comprises a water pump, a fixing plate, a water distribution plate and a plurality of water injection pipes assembled on the water distribution plate; the fixing plate is provided with a limiting hole, and a water passing channel is formed in the water diversion plate. The push-pull mechanism can drive the water diversion plate to do reciprocating rectilinear motion in the height direction of the frame; the pressure sensor is used for acquiring the pressure value of the target snow layer; the control module calculates the water supplementing amount needed by the corresponding snow layers according to the pressure values, obtained by the pressure sensor, of the different target snow layers, and the water distribution plate is driven by the push-pull mechanism to drive the multiple water injection pipes to synchronously move downwards; the tail ends of the plurality of water injection pipes pass through the corresponding limiting holes and then extend into corresponding snow layers of the snow accumulation blocks to be made of the ice-like snow, and quantitative water is supplemented into the corresponding snow layers of the snow accumulation blocks to be made of the ice-like snow at the same time.

Description

Technical Field

[0001] The present invention belongs to the field of artificial snowmaking, and more specifically, relates to an ice snow preparation vehicle, an assembly thereof, and a method for calculating the water injection amount into a target position. Background Art

[0002] Ice snow refers to snow with a density of 0.60 g / cm 3 ~0.68 g / cm 3 , which has the characteristics of hard texture, large snow grains, and small porosity, and is mainly applied to competition events such as ski jumping and alpine downhill in alpine ski venues (considering factors such as competition fairness, result comparability, and event viewing).

[0003] Due to the characteristics of high - speed, large impact force on the track, and large snow surface disturbance in alpine skiing events, if the snow surface is loose, the disturbance generated by the front athlete on the track will interfere with the competition of the rear athlete. Therefore, alpine skiing events require an ice snow track with a hard texture and high impact resistance to ensure that physical quantities such as the flatness, density, and friction coefficient of the track remain unchanged during the competition. That is to say, the aforementioned physical quantities of the ice snow track are the same for each athlete during the competition to maintain the fairness of the competition.

[0004] For the preparation of an ice snow track, there is no corresponding automated mechanical equipment, and it is usually achieved by manual preparation. The steps for manually preparing an ice snow track are as follows: (1) The snow made by a snowmaking machine or ice crusher is processed and compacted by a snow grooming machine to first form a normal track with a thickness of not less than 70 cm, and then a snow density or hardness meter is used to evaluate the density spatial distribution of the track; (2) For a racing track, the snow grooming machine is also required to turn over and crush the normal track, and the required water injection amount is calculated based on the density of the normal track evaluated in the previous step. After injecting water in batches and repeatedly turning over and pressing, the snow in the track is evenly distributed, and then it is quickly flattened and left standing to make the ice snow track in a uniformly frozen state; (3) After the ice snow track is prepared, it is also necessary for workers to use skis to shovel the floating snow on the ice snow track in a side - sliding manner to make the trimmed ice snow track achieve a smooth surface like a mirror. Obviously, the aforementioned method of manually preparing an ice snow track has the disadvantages of consuming a lot of manpower and material resources, low efficiency, and inability to ensure the compliance of the ice snow track made manually.

[0005] Based on this, the present invention provides an ice snow preparation vehicle, an assembly thereof, and a method for calculating the water injection amount into a target position to solve the aforementioned technical problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is how to prepare ice snow in an automated manner. In view of the above problems, an ice snow preparation vehicle, an assembly thereof, and a calculation method for injecting water volume into a target position are provided.

[0007] The technical solution of the present invention to solve the above technical problems is to provide an ice snow preparation vehicle, including:

[0008] A vehicle frame, including ski boards;

[0009] A water injection assembly, including a water pump, a fixing plate installed on the ski board, a water distribution plate supported on the fixing plate, and a plurality of water injection pipes assembled to the water distribution plate;

[0010] The fixing plate has a plurality of limiting holes that penetrate the fixing plate in the thickness direction and are adapted to the number of the water injection pipes. Along the thickness direction of the water distribution plate, several water passing channels connected to the water injection pipes are formed in the water distribution plate;

[0011] A pushing and pulling mechanism that can drive the water distribution plate to perform a reciprocating linear motion along the height direction of the vehicle frame, and the height value of the end of the pushing and pulling mechanism hinged to the end of the peripheral part of the vehicle frame from the ground is greater than the height value of the end of the pushing and pulling mechanism hinged to the top of the water distribution plate from the ground;

[0012] A temperature and pressure sensing unit, including a pressure sensor for obtaining the pressure value of the corresponding snow layer of the snow accumulation block of the ice snow to be manufactured;

[0013] A control module for calculating the required water replenishment volume of the corresponding snow layer according to the pressure values of different target snow layers in the snow accumulation block of the ice snow to be manufactured. When the water distribution plate drives a plurality of the water injection pipes to move downward synchronously under the drive of the pushing and pulling mechanism, the ends of the plurality of water injection pipes all pass through the corresponding limiting holes and extend into the corresponding snow layer of the snow accumulation block of the ice snow to be manufactured, and at the same time, a fixed amount of water is replenished into the corresponding snow layer of the snow accumulation block of the ice snow to be manufactured.

[0014] In one embodiment, the extending directions of a part of the plurality of water passing channels are the same as the length direction of the water distribution plate, and the extending directions of the other part of the water passing channels are the same as the width direction of the water distribution plate;

[0015] Along the length direction of the water distribution plate, a part of the plurality of water passing channels are arranged on the water distribution plate in an array; along the width direction of the water distribution plate, the other part of the water passing channels are also arranged on the water distribution plate in an array;

[0016] The bottom surface of the water diversion plate also has a plurality of first mounting holes for connecting the corresponding water injection pipes, and one end of each of the first mounting holes is connected to the corresponding limiting hole, and the other end is connected to the corresponding intersection area formed by the multiple water passages in the width direction of the water diversion plate and the multiple water passages in the length direction.

[0017] In one embodiment, a second mounting hole is provided in the cross region in the middle of the water dividing plate, and the head end of the temperature and pressure sensing unit is installed in the second mounting hole;

[0018] The temperature and pressure sensor is a temperature and pressure detection rod; the difference d between the length of the temperature and pressure detection rod and the length of the water injection pipe satisfies: 10cm≦d≦20cm.

[0019] In one embodiment, each of the water injection pipes includes a pipe body and a water injection head fixed to the rear end of the pipe body, and the peripheral side portion of the pipe body close to the water injection head is covered with a heat preservation element;

[0020] The surface of the water injection head is provided with a plurality of water injection holes, and the diameter d of the opening of each of the water injection holes satisfies: 0.2 mm≦d≦0.5 mm.

[0021] In one embodiment, each of the water injection heads includes a cylindrical portion and a tip portion connected to the end of the cylindrical portion, and a diameter of the cylindrical portion is greater than a diameter of the heat preservation element.

[0022] In one embodiment, the head of the temperature and pressure sensing unit is conical.

[0023] In one embodiment, an icy snow preparation assembly is provided, comprising a snow grooming vehicle and an icy snow preparation vehicle as described above, wherein the icy snow preparation vehicle can be moved to a specified position under the traction of the snow grooming vehicle.

[0024] In one embodiment, a method for calculating the water injection amount of an ice-like snow preparation vehicle is provided, which is applied to the ice-like snow preparation vehicle as described above;

[0025] Calculating the hardness value of the corresponding snow layer of the ice-like snow block to be manufactured according to the pressure values ​​of different target snow layers of the ice-like snow block to be manufactured;

[0026] According to the hardness values ​​of different target snow layers to be produced, the density values ​​of different target snow layers corresponding to the ice-like snow blocks to be produced are calculated.

[0027] ρ=(P+685.16) / 2.5058×10 3 ;

[0028] Among them, P is the hardness of the target snow layer in the ice-like snow accumulation block to be manufactured, and ρ is the density of the target snow layer in the ice-like snow accumulation block to be manufactured;

[0029] The theoretical water replenishment rate of the corresponding snow layer is calculated through the density values of different target snow layers in the ice-like snow accumulation block to be manufactured. The formula is as follows:

[0030]

[0031] Among them, ρ 冰 is the expected density of the target snow layer of the target ice-like snow to be manufactured; ρ 水 is the density of water; R is the theoretical water replenishment rate of the target snow layer in the ice-like snow accumulation block to be manufactured. Then, the theoretically required amount of water to be replenished in the target snow layer of the ice-like snow accumulation block to be manufactured is calculated.

[0032] In one embodiment, the actual water replenishment rate is calculated according to the temperature of the target snow layer in the ice-like snow accumulation block to be manufactured obtained by the temperature and pressure sensing unit.

[0033]

[0034] Among them, R i ’ is the actual water replenishment rate of the i-th layer of the target snow layer, R i is the theoretical water replenishment rate of the i-th layer of the target snow layer, T w is the water injection temperature, T i is the temperature of the i-th layer of the target snow layer, and ɑ is an empirical coefficient.

[0035] In one embodiment, the amount of water to be replenished in the corresponding snow layer of the target ice-like snow accumulation block is calculated according to the product of the actual water replenishment rate of the target snow layer in the target ice-like snow accumulation block and the volume of the target snow layer in the target ice-like snow accumulation block.

[0036] The beneficial effect of the present invention is that: by controlling the water pump, the amount of water to be replenished for the corresponding snow layer is calculated according to the pressure value of the target snow layer in the ice-like snow accumulation block obtained by the pressure sensor. When the water distribution plate drives a plurality of water injection pipes to move downward synchronously under the drive of the pushing and pulling mechanism, the ends of the plurality of water injection pipes all pass through the corresponding limiting holes and extend into the corresponding snow layer of the ice-like snow accumulation block to be manufactured, and at the same time, a fixed amount of water is replenished into the corresponding snow layer of the ice-like snow accumulation block to be manufactured. Description of the Drawings

[0037] Figure 1 is a schematic structural diagram of the overall assembly for ice-like snow preparation in one embodiment of the present invention;

[0038] Figure 2 is a schematic structural diagram of the ice-like snow preparation vehicle in one state in one embodiment of the present invention;

[0039] Figure 3 It is a schematic structural diagram of another state of the ice-like snow preparation vehicle in an embodiment of the present invention;

[0040] Figure 4 It is a schematic structural diagram of the vehicle frame in an embodiment of the present invention;

[0041] Figure 5 It is a schematic structural diagram of the water distribution plate, the water injection pipe and the temperature and pressure sensing element in an embodiment of the present invention;

[0042] Figure 6 It is a schematic structural diagram of the water distribution plate in an embodiment of the present invention;

[0043] Figure 7 It is the present invention Figure 6 The sectional view taken along A-A in;

[0044] Figure 8 It is the present invention Figure 6 The sectional view taken along B-B in;

[0045] Figure 9 It is a schematic structural diagram of the water injection pipe in an embodiment of the present invention;

[0046] Figure 10 It is a summary table of existing hardness testing equipment (source: Ren Zaichao. Technical improvement and experimental research of snow penetration instrument. Dalian University of Technology, 2021.);

[0047] Figure 11 It is the target snow layer pressure - water injection pressure sequence curve.

[0048] Reference numerals: 1, ice-like snow preparation vehicle; 10, vehicle frame; 100, ski board; 1000, guide groove; 101, bracket; 102, column; 103, pulley structure; 104, high position limit switch; 105, low position limit switch;

[0049] 11, water injection assembly; 110, water pump; 111, fixing plate; 1110, limit hole; 112, water distribution plate; 1120, water passage; 1121, first mounting hole; 1122, second mounting hole; 113, water injection pipe; 1130, pipe body; 1131, water injection head; 1131a, water injection hole; 1131b, cylindrical part; 1131c, tip part;

[0050] 12, push-pull mechanism; 13, temperature and pressure sensing unit; 14, control cabin; 140, control module; 15, water pump cabin; 16, water tank; 17, water diversion pipeline; 18, towing arm; 2, snow compactor; 3, snow block for ice-like snow to be manufactured. Detailed implementation manners

[0051] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0052] Referring to Figure 1 and Figure 2 , the present invention provides an ice snow preparation vehicle 1, which includes a vehicle frame 10, a water injection assembly 11 assembled on the vehicle frame 10, a pushing and pulling mechanism 12 for pushing and pulling a water distribution plate 112 in the water injection assembly 11, and a pressure sensor and a control module 140. The pressure value of the ice snow accumulation block 3 to be manufactured is obtained by the pressure sensor to calculate the predetermined water injection pressure for injecting water into the water distribution plate 112, and a fixed amount of water is replenished into the ice snow accumulation block 3 to be manufactured through the water distribution plate 112 under the drive of the pushing and pulling mechanism 12.

[0053] As Figure 3 and Figure 4 shown, the vehicle frame 10 includes ski boards 100. Among them, the bottom of the ski board 100 is curved from the middle to both ends, and the opening direction of the ski board 100 is away from the ground direction, so as to reduce the resistance of the ice snow preparation vehicle 1 during movement. Specifically, a plurality of guiding grooves 1000 may be provided at the bottom of the ski board 100, and the length direction of the guiding grooves 1000 is parallel to the length direction of the ski board 100, so as to assist the ice snow preparation vehicle 1 to slide on the surface of the ice snow accumulation block to be manufactured, and at the same time ensure the stability of the movement of the ice snow preparation vehicle 1. More specifically, the width value d and the depth value h of the guiding groove 1000 may satisfy: 2 cm ≥ d ≥ 1 cm, 2 cm ≥ h ≥ 1 cm.

[0054] The water injection assembly 11 includes a water pump 110, a fixing plate 11 installed on the ski board 100, a water distribution plate 112 supported on the fixing plate 11, and a plurality of water injection pipes 113 assembled on the water distribution plate 112. Optionally, the ice snow preparation vehicle 1 may further include a bracket 101 installed on the ski board 100 and used to support the water pump cabin 15 and the control cabin 14, and the water pump 110 and the control module 140 are placed in the water pump cabin 15 and the control cabin 14. Among them, the fixing plate 11 has a plurality of limiting holes 1110 that penetrate the fixing plate 11 along the thickness direction and are adapted to the number of the water injection pipes 113, and along the thickness direction of the water distribution plate 112, several water passing channels 1120 communicating with the water injection pipes 113 are formed in the water distribution plate 112. Obviously, each water injection pipe 113 extends downward through the corresponding limiting hole 1110. Preferably, in order to reduce the resistance of the water injection pipe 113 inserted into the ice snow accumulation block 3 to be manufactured, the shape of each water injection pipe 113 may be cylindrical, and correspondingly, each limiting hole 1110 may be a circular through hole.

[0055] It should be noted that when the ice snow preparation vehicle 1 is in a non-working state, the water injection head 1131 of each water injection pipe 113 (see below for details) is received in the corresponding limiting hole 1110, and in order to prevent the water in the water injection head 1131 from freezing during this process, an electric heating wire with insulation protection treatment is arranged in each positioning hole.

[0056] In a specific embodiment, along the thickness direction of the fixing plate 11, a plurality of square through holes are provided in an array on the fixing plate 11, and the limiting holes 1110 are respectively processed in the intersection areas of the plurality of crisscross ribs. And the side length dimension d of the through hole can satisfy: 20cm≥d≥15cm. Of course, in other specific embodiments, the limiting hole 1110 can also be of other shapes and / or sizes. And the diameter d of the limiting hole 1110 can satisfy: 2cm≥d≥4cm.

[0057] The push-pull mechanism 12 can control and drive the water diversion plate 112 to perform reciprocating linear motion along the height direction of the frame 10. The height value of the end of the push-pull mechanism 12 hinged to the side of the frame 10 from the ground is greater than the height value of the end of the push-pull mechanism 12 hinged to the top of the diversion plate from the ground, so as to adjust the depth of the several water injection pipes 113 on the water diversion plate 112 extending into the ice-like snow blocks to be manufactured. Exemplarily, the push-pull mechanism 12 can be a hydraulic push rod, a cylinder push rod, an electric push rod, or a screw push rod, etc.

[0058] The temperature and pressure sensing unit 13 includes a pressure sensor for obtaining the pressure value of the corresponding snow layer (multiple layers, refer to the following for details) in the ice-like snow block 3 to be manufactured. Here, it should be noted that in the process of manufacturing ice-like snow by the ice-like snow preparation vehicle 1, the thickness of each target snow layer needs to be calculated according to the speed of the water distribution plate 112 rising and falling and the sampling frequency of the control module 140, and a plurality of water injection pipes 113 start from the uppermost target snow layer in the ice-like snow block 3 to be manufactured and move to the lower target snow layer in sequence to inject water into the target snow layer until the end of the water injection pipe 113 reaches the target position of the lowermost layer or the target position of the bottom snow layer in the ice-like snow block 3 to be manufactured. Obviously, the water injection pipe 113 injects water into the entire target snow layer at the target position (or water injection position, which is at the bottom of the target snow layer).

[0059] It should also be explained that the aforementioned snow layer is a hypothetical feature for the convenience of describing that during the downward movement of the water injection component 11 (see below for details), the water injection pipe 113 sequentially injects water into a plurality of small snow blocks of medium volume in the ice-like snow block to be manufactured (a plurality of small snow blocks are stacked layer by layer along the thickness direction to form the ice-like snow block 3 to be manufactured), wherein the plurality of small snow blocks correspond to different target snow layers.

[0060] The control module 140 is used to calculate the water replenishment amount required for the corresponding snow layer based on the pressure value of the target snow layer in the ice-like snow accumulation block 3 to be manufactured obtained by the pressure sensor. At the same time, the control module 140 controls the water pump 110 to inject water into the water distribution plate 112 at a predetermined water injection pressure of the water pump 110 (the calculation method is detailed in the following). The water injected into the water distribution plate 112 is replenished into the target snow layer after passing through the water injection pipe 113, so as to indirectly control the water injection amount of the water pump 110 into the water distribution plate 112 (which is the water replenishment amount required for the target snow layer). Synchronously, the control module 140 controls the push-pull mechanism 12 to drive the water distribution plate 112 to move downward. During the process that the water distribution plate 112 drives a plurality of water injection pipes 113 to move downward, the water injection heads 1131 of the plurality of water injection pipes 113 all extend into the target snow layer of the ice-like snow accumulation block to be manufactured after passing through the corresponding limit holes 1110, and at the same time, a fixed amount of water is replenished into the target snow layer.

[0061] It should be noted that, as described above, here it refers to the process that a plurality of water injection pipes 113 inject a fixed amount of water into the corresponding snow layer in sequence from the uppermost target snow layer in the ice-like snow accumulation block 3 to be manufactured to the lower target snow layer. That is to say, the water injection pipe 113 injects the water replenishment amount required for the target snow layer into the target snow layer. Therefore, the water injection amounts or the required water replenishment amounts of different target snow layers are usually different.

[0062] Optionally, the vehicle frame 10 is assembled by a plurality of columns 102, and a pulley structure 103 for driving the water distribution plate 112 to move up and down is installed on each column 102. A high-position limit switch 104 and a low-position limit switch 105 are installed on one column 102. The water distribution plate 112 is placed between the high-position limit switch 104 and the low-position limit switch 105 to adjust the position of the water distribution plate 112 through the high-position limit switch 104 and the low-position limit switch 105, so that the water injection pipe 113 is in the target position under the drive of the water distribution plate 112. It can be understood that the distances between both the high-position limit switch 104 and the low-position limit switch 105 and the surface of the ice-like snow accumulation block 3 to be manufactured can be adjusted to achieve the purpose of injecting water into the ice-like snow accumulation blocks 3 with different thicknesses. Of course, in other specific embodiments, the up and down movement of the water distribution plate 112 can also be realized by other means.

[0063] Optionally, the ice-like snow preparation vehicle 1 may further include a water tank 16 and a water diversion pipeline 17, which can not only supply water to the water pump 110, but also provide sufficient counterweight for the ice-like snow preparation vehicle 1 to ensure the stability of the ice-like snow preparation vehicle 1 during movement. Obviously, one end of the water diversion pipeline 17 communicates with the water outlet interface of the water tank 16, and the other end communicates with the water inlet interface of the water pump 110. Specifically, a heating device and a temperature sensor may also be installed in the water tank 16 to keep the temperature of the water body always at 10°C - 15°C, so as to prevent the water with too low temperature from freezing during transportation or injection, which may cause the ice-like snow preparation vehicle 1 to malfunction or the water injection volume into different target snow layers of the ice-like snow accumulation block 3 to be uneven; the water with too high temperature is likely to form cavities and discontinuous ice bodies after being injected into the ice-like snow accumulation block to be manufactured (which will also cause the aforementioned uneven water injection volume phenomenon). Preferably, in order to prevent the water in the water tank 16 and the water diversion pipeline 17 from freezing, the water tank 16 and the water diversion pipeline 17 are covered with a heat-insulating layer.

[0064] In a specific embodiment, referring to Figure 6 , Figure 7 and Figure 8 , for a part of the water passing channels 1120 among the multiple water passing channels 1120, the extending direction is the same as the length direction of the water diversion plate 112, and for another part of the water passing channels 1120, the extending direction is the same as the width direction of the water diversion plate 112. In this specific embodiment, the shape of the water diversion plate 112 may be rectangular, that is to say, the number of water passing channels 1120 with the extending direction the same as the length direction of the water diversion plate 112 is greater than the number of water passing plates with the extending direction the same as the width direction of the water diversion plate 112.

[0065] Along the length direction of the water diversion plate 112, a part of the water passing channels 1120 among the multiple water passing channels 1120 are arranged on the water diversion plate 112 in an array; along the width direction of the water diversion plate 112, another part of the water passing channels 1120 are also arranged on the water diversion plate 112 in an array and form several cross regions. The bottom surface of the water diversion plate 112 also has several first mounting holes 1121 for connecting the corresponding water injection pipes 113, and one end of each first mounting hole 1121 communicates with the corresponding limiting hole 1110 (when the fixing plate 11 supports the water diversion plate 112), and the other end communicates with the corresponding cross region formed by the multiple water passing channels 1120 in the width direction and the multiple water passing channels 1120 in the length direction of the water diversion plate 112, so as to facilitate the water in the water tank 16 to be transported into each water injection pipe 113 through the water passing channels 1120 under the drive of the water pump 110. In this specific embodiment, each water injection pipe 113 is connected to the corresponding first mounting hole 1121 in a threaded connection manner.

[0066] In one specific embodiment, the cross region of the upper middle portion of the water divider plate 112 has a second mounting hole 1122, and the head end of the pressure sensor is mounted in the second mounting hole 1122. Figure 5 As shown, in order to insert the temperature and pressure sensing unit 13 into the corresponding snow layer in the ice-like snow block 3 to be manufactured before the water injection pipe 113, so as to obtain the target snow layer hardness value and temperature value in the corresponding snow layer, the difference d between the length value of the temperature and pressure sensing unit 13 and the length value of the water injection pipe 113 can satisfy: 10cm≦d≦20cm. Obviously, the temperature and pressure sensing unit 13 can be a temperature and pressure detection rod.

[0067] In a specific embodiment, the temperature and pressure sensing unit 13 also includes a temperature sensor for obtaining the temperature value of the snow layer corresponding to the ice-like snow block 3 to be manufactured (see below for details).

[0068] In a specific embodiment, Figure 9 As shown, each water injection pipe 113 includes a pipe body 1130 and a water injection head 1131 fixed to the rear end of the pipe body 1130, and in order to prevent the water in the water injection pipe 113 from freezing, the peripheral side portion of the pipe body 1130 close to the water injection head 1131 is coated with a thermal insulation element; in this specific embodiment, the thermal insulation element can be an thermal insulation pipe.

[0069] The surface of the water injection head 1131 is provided with a plurality of water injection holes 1131a, and in order to prevent the water injection holes 1131a from being blocked, and at the same time to avoid the water injection holes 1131a being too large in size to damage the target snow layer in the ice-like snow to be produced or cause waste of water, the diameter d of the opening of each water injection hole 1131a can meet the following requirements: 0.2mm≦R≦0.5mm.

[0070] In a specific embodiment, in order to reduce the resistance when the water injection pipe 113 is inserted into the ice-like snow block 3 to be manufactured, each water injection head 1131 includes a cylindrical portion 1131b and a tip portion 1131c connected to the end of the cylindrical portion 1131b, and the diameter of the cylindrical portion 1131b is larger than the diameter of the insulation element.

[0071] In a specific embodiment, the head of the temperature and pressure sensing unit 13 is conical, and Figure 10 As shown, in order to facilitate the conversion between the pressure of the target snow layer and the hardness of the target snow layer, it is necessary to select the value of the cone angle and the cone bottom diameter in the summary of the existing hardness measurement equipment. In this specific embodiment, the cone angle of the temperature and pressure sensing unit 13 is 60°, and the value range of the cone bottom diameter d is: 40mm≥d≥25mm.

[0072] In a specific embodiment, a total assembly for preparing ice snow is provided, including a snow grooming vehicle 2 and the ice snow preparation vehicle 1 as described above. The ice snow preparation vehicle 1 can be moved to a designated position under the traction of the snow grooming vehicle 2. Optionally, the ice snow preparation vehicle 1 may further include a towing arm 18 that facilitates connection to the snow grooming vehicle 2.

[0073] In a specific embodiment, a calculation method for the water injection amount of different target snow layers in the ice snow accumulation block to be manufactured is provided, which is applied to the ice snow preparation vehicle 1 as described above. First, the hardness value of the corresponding snow layer in the ice snow to be manufactured is calculated according to the formula and the pressure value of the target snow layer in the ice snow accumulation block 3 to be manufactured. The formula is as follows:

[0074]

[0075] where F is the pressure of the target snow layer in the ice snow accumulation block 3 to be manufactured, and r is the cone bottom radius of the pressure sensor. Then, according to the following formula, the density value of the corresponding snow layer in the ice snow accumulation block to be manufactured is calculated through the hardness value of the target snow layer in the ice snow accumulation block 3 to be manufactured.

[0076] ρ = (P + 685.16) / 2.5058×10 3 R 2 = 0.987;

[0077] This formula is obtained by linear fitting of a large amount of test data. Among them, R 2 represents the goodness of fit of the sample; R 2 = 1 indicates a perfect correlation and the scatter plot presents a standard straight line; R 2 = 0 indicates that there is no linear relationship between the two; the actual value of ρ is calculated using the P value. The closer the R 2 value is to 1, the better the fitting effect, that is, the closer the ρ value calculated using the P value is to the actual value; P is the hardness of the target snow layer in the ice snow accumulation block 3 to be manufactured, and ρ is the density of the target snow layer in the ice snow accumulation block to be manufactured; the theoretical water replenishment rate is calculated through the density value of the target snow layer in the ice snow accumulation block to be manufactured and the formula.

[0078]

[0079] where ρ 冰 is the expected density of the target snow layer in the target ice snow accumulation block 3 to be manufactured; ρ 水 is the density of water; R is the theoretical water replenishment rate of the target snow layer in the ice snow accumulation block 3 to be manufactured; then the theoretical water amount to be replenished in the corresponding snow layer of the ice snow accumulation block 3 to be manufactured is calculated.

[0080] In a specific embodiment, during the process of injecting water into the target snow layer of the ice-like snow accumulation block 3 to be manufactured, the temperature of the target snow layer will affect the vertical infiltration distance and horizontal diffusion distance of the water body. To more accurately calculate the water replenishment amount for the corresponding snow layer in the ice-like snow accumulation block 3 to be manufactured, it is also necessary to calculate the actual water replenishment rate according to the formula and the temperature of the target snow layer in the ice-like snow accumulation block 3 to be manufactured (obtained by the temperature sensor in the temperature and pressure sensing element, and the figure of the temperature sensor is not shown).

[0081]

[0082] Among them, R i ’ is the actual water replenishment rate of the i-th layer target snow layer, and R i is the theoretical water replenishment rate of the i-th layer target snow layer, T w is the water injection temperature, T i is the temperature of the i-th layer target snow layer, and ɑ is an empirical coefficient.

[0083] In a specific embodiment, the water volume to be replenished in the corresponding snow layer of the ice-like snow accumulation block 3 to be manufactured is calculated by multiplying the actual water replenishment rate of the target snow layer in the ice-like snow accumulation block 3 to be manufactured by the volume of the corresponding snow layer in the ice-like snow accumulation block 3 to be manufactured. Referring to the foregoing, it is necessary to calculate the thickness of each target snow layer according to the lifting speed of the water distribution plate 112 and the sampling frequency of the control module 140. Now, an example is given. If the moving speed of the water injection assembly 11 is 6 cm / s (the moving distance per second is 6 cm) and the sampling frequency of the control module 140 is 5 Hz (there are 5 sampling points per second), then the thickness of each target snow layer in the ice-like snow accumulation block 3 to be manufactured is 6 cm / s / 5 Hz = 1.2 cm. The following example shows how to calculate the volume of the corresponding snow layer in the ice-like snow accumulation block 3 to be manufactured. First, assume that the horizontal and vertical spacings between adjacent water injection pipes 113 are both 20 cm. Then, the volume of the target snow layer covered by the water transported by each water injection pipe 113 is 20 cm × 20 cm × 1.2 cm = 480 cm 3 ,, if the ice-like snow preparation vehicle 1 is equipped with 238 water injection pipes 113 in total, then the volume of each target snow layer in the ice-like snow accumulation block 3 to be manufactured is 238 × 480 cm 3 = 114240 cm 3 .

[0084] Based on this, the control module 140 can calculate the water injection amount of the target snow layer in the ice-like snow accumulation block to be manufactured, and then calculate the water pump injection pressure of the target snow layer according to the flow-pressure relationship of the water pump 110 (each type of water pump has a specific flow-pressure relationship), and generate a sequence curve of the water pump injection pressure of the target snow layer, such as Figure 11As shown. After the water injection pipe 113 moves to the target snow layer, water can be injected into the target snow layer by the water pump water injection pressure determined by the water injection pressure sequence, so as to create a uniform ice-like target snow layer in the thickness direction of the ice-like snow accumulation block to be manufactured.

[0085] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An ice snow preparation vehicle, characterized in that: include: Frame, including skis; The water injection assembly comprises a fixing plate mounted on the ski board, a water distribution plate supported on the fixing plate, and a plurality of water injection pipes assembled on the water distribution plate; The fixing plate has a plurality of limiting holes penetrating the fixing plate along the thickness direction and matching the number of the water injection pipes, and along the thickness direction of the water distribution plate, a plurality of water passages connected with the water injection pipes are formed in the water distribution plate; The push-pull mechanism can drive the water diversion plate to perform reciprocating linear motion along the height direction of the frame, and the height value of the end of the push-pull mechanism hinged to the peripheral side of the frame from the ground is greater than the height value of the end of the push-pull mechanism hinged to the top of the water diversion plate from the ground; The temperature and pressure sensing unit includes a pressure sensor for obtaining a corresponding snow layer pressure value of the ice-like snow block to be manufactured; The control module is used to calculate the amount of water replenishment required for the corresponding snow layer according to the pressure values ​​of different target snow layers in the ice-like snow block to be manufactured obtained by the pressure sensor, and when the water distribution plate drives the plurality of water injection pipes to move downward synchronously under the drive of the push-pull mechanism, the ends of the plurality of water injection pipes all pass through the corresponding limiting holes and extend into the corresponding snow layer of the ice-like snow block to be manufactured, and at the same time, a certain amount of water is replenished into the corresponding snow layer of the ice-like snow block to be manufactured.

2. The ice snow preparation vehicle according to claim 1, characterized in that: The extending direction of a part of the plurality of water passages is the same as the length direction of the water diversion plate, and the extending direction of another part of the water passages is the same as the width direction of the water diversion plate; Along the length direction of the water divider plate, a part of the plurality of water flow channels are arranged in an array on the water divider plate; along the width direction of the water divider plate, another part of the water flow channels are also arranged in an array on the water divider plate; The bottom surface of the water diversion plate also has a plurality of first mounting holes for connecting the corresponding water injection pipes, and one end of each of the first mounting holes is connected to the corresponding limiting hole, and the other end is connected to the corresponding intersection area formed by the multiple water passages in the width direction of the water diversion plate and the multiple water passages in the length direction.

3. The ice snow preparation vehicle according to claim 2, characterized in that: A second mounting hole is provided in the cross region in the middle of the water dividing plate, and the head end of the temperature and pressure sensing unit is installed in the second mounting hole; The temperature and pressure sensor is a temperature and pressure detection rod; the difference d between the length of the temperature and pressure detection rod and the length of the water injection pipe satisfies: 10cm≦d≦20cm.

4. The ice snow preparation vehicle according to claim 1, characterized in that: Each of the water injection pipes comprises a pipe body and a water injection head fixed to the rear end of the pipe body, and a peripheral side portion of the pipe body close to the water injection head is coated with a heat preservation element; The surface of the water injection head is provided with a plurality of water injection holes, and the diameter d of the opening of each water injection hole satisfies: 0.2mm≦d≦0.5mm.

5. The ice snow preparation vehicle according to claim 4, characterized in that: Each of the water injection heads includes a cylindrical portion and a tip portion connected to the end of the cylindrical portion, and the diameter of the cylindrical portion is greater than the diameter of the heat preservation element.

6. The ice snow preparation vehicle according to claim 1, characterized in that: The head of the temperature and pressure sensing unit is in a cone shape.

7. An icy snow preparation assembly, characterized in that: It comprises a snow grooming vehicle and an icy snow preparation vehicle as described in any one of claims 1 to 6, wherein the icy snow preparation vehicle can be moved to a designated position under the traction of the snow grooming vehicle.

8. A method for calculating the amount of water injected into a target location by an ice snow preparation vehicle, characterized in that: Applicable to an ice snow preparation vehicle as described in any one of claims 1 to 6; Calculating the hardness value of the corresponding snow layer of the ice-like snow block to be manufactured according to the pressure values ​​of different target snow layers of the ice-like snow block to be manufactured; According to the hardness values ​​of different target snow layers to be manufactured, the density values ​​of different target snow layers corresponding to the ice-like snow blocks to be manufactured are calculated. p=(P+685.16) / 2.5058×10 3 ; Wherein, P is the hardness of the target snow layer in the ice-like snow block to be manufactured, and ρ is the density of the target snow layer in the ice-like snow block to be manufactured; The theoretical water replenishment rate of the corresponding snow layer is calculated by the density value of different target snow layers in the ice-like snow block to be manufactured. The formula is as follows: Among them, ρ 冰 is the expected density of the target snow layer to be produced in the form of ice; 水 is the density of water; R is the theoretical water replenishment rate of the target snow layer in the ice-like snow block to be manufactured; and then the theoretical amount of water to be replenished in the target snow layer in the ice-like snow block to be manufactured is calculated.

9. The method for calculating the water injection amount of the ice snow preparation vehicle according to claim 8, characterized in that: The actual water replenishment rate is calculated according to the temperature of the target snow layer in the ice-like snow block to be manufactured obtained by the temperature and pressure sensing unit, Among them, R i ' is the actual water replenishment rate of the target snow layer i, R i is the theoretical water replenishment rate of the target snow layer at layer i, T w is the water injection temperature, T i is the target snow layer temperature of the i-th layer, and ɑ is the empirical coefficient.

10. The method for calculating the water injection amount of an ice snow preparation vehicle according to claim 9, characterized in that: The amount of water to be added to the corresponding snow layer in the target ice-like snow block to be manufactured is calculated based on the product of the actual water replenishment rate of the target snow layer in the target ice-like snow block to be manufactured and the volume of the target snow layer in the target ice-like snow block to be manufactured.

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