Ice-snow preparation vehicle, assembly equipment and water injection amount calculation method to target position

Abstract

The application belongs to the technical field of artificial snow making, and provides an ice-like snow preparation vehicle, a general assembly equipment and a calculation method of water injection amount to a target position; the ice-like snow preparation vehicle comprises a vehicle frame, a snowboard, a water injection assembly, a push-pull mechanism and a pressure sensor; the water injection assembly comprises a water pump, a fixing plate, a water distribution plate and a plurality of water injection pipes assembled to the water distribution plate; the fixing plate is provided with limiting holes, and the water distribution plate is formed with a water passing channel; the push-pull mechanism can drive the water distribution plate to reciprocate linearly along the height direction of the vehicle frame; the pressure sensor is used to obtain the pressure value of a target snow layer; the control module of the application calculates the required water supplement amount of the corresponding snow layer according to the pressure value of the different target snow layers obtained by the pressure sensor; when the water distribution plate is driven by the push-pull mechanism to drive the plurality of water injection pipes to move downward synchronously, the ends of the plurality of water injection pipes extend into the corresponding snow layer of the ice-like snow accumulation block to be manufactured after passing through the corresponding limiting holes, and a certain amount of water is supplemented into the corresponding snow layer of the ice-like snow accumulation block to be manufactured.

Description

Technical Field

[0001] This invention belongs to the field of artificial snowmaking, and more specifically, relates to an ice-like snow preparation vehicle, its assembly, and a method for calculating the amount of water injected into a target location. Background Technology

[0002] Ice-like snow refers to snow with a density of 0.60 g / cm³. 3 ~0.68g / cm 3 The snow is characterized by its hard texture, large snow particles, and low porosity. It is mainly used in alpine skiing competitions such as ski jumping and downhill skiing, based on considerations of fairness, comparability of results, and spectator appeal.

[0003] Because alpine skiing involves high speeds, significant impacts on the track, and substantial snow surface disturbance, loose snow would cause disturbances to runners behind, making the race more difficult. Therefore, alpine skiing requires hard, impact-resistant icy snow tracks to ensure that the track's smoothness, density, and coefficient of friction remain constant throughout the race. In other words, these physical properties of the icy snow track are identical for every athlete during the competition, maintaining fairness.

[0004] There is no corresponding automated mechanical equipment for the preparation of ice-like snow tracks, which is usually achieved by manual preparation. The steps for manually preparing ice-like snow tracks are as follows: (1) The snow produced by the snowmaking machine or crushed ice is processed and compacted by a snow groomer to form a normal track with a thickness of not less than 70cm. Then, the density spatial distribution of the track is evaluated by a snow density or hardness meter; (2) For racing tracks, the normal track needs to be turned over and broken by a snow groomer. The required amount of water is calculated based on the density of the normal track evaluated in the previous step. Water is injected in several times and the track is repeatedly turned over and compacted to make the snow in the track evenly distributed. Then, it is quickly flattened and left to stand for a period of time to make the ice-like snow track uniformly frozen; (3) After the ice-like snow track is prepared, the loose snow on the ice-like snow track needs to be removed manually by skiing sideways to make the surface of the repaired ice-like snow track smooth as a mirror. Obviously, the above-mentioned method of manually preparing ice-like snow tracks has disadvantages such as being labor-intensive and resource-intensive, inefficient, and unable to guarantee the compliance of the artificially made ice-like snow tracks.

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

[0006] The technical problem to be solved by this invention is how to achieve automated preparation of ice-like snow. To address the above problem, this invention provides an ice-like snow preparation vehicle, an assembly process, and a method for calculating the amount of water injected into the target location.

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

[0008] The frame, including the skis;

[0009] The water injection assembly includes a water pump, a fixing plate mounted on the ski, 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 several limiting holes that penetrate the fixing plate along the thickness direction and are adapted to the number of water injection pipes. Along the thickness direction of the water distribution plate, several water passages connected to the water injection pipes are formed in the water distribution plate.

[0011] The push-pull mechanism can drive the water distribution plate to reciprocate linearly along the height direction of the vehicle frame, and the height of the end of the push-pull mechanism hinged to the periphery of the vehicle frame from the ground is greater than the height of the end of the push-pull mechanism hinged to the top of the water distribution plate from the ground.

[0012] The temperature and pressure sensing unit includes a pressure sensor for acquiring the corresponding snow layer pressure value of the ice-like snow block to be manufactured;

[0013] The control module is used to calculate the required amount of water to be added to the corresponding snow layer based on the pressure value of different target snow layers in the ice-like snow block to be manufactured obtained by the pressure sensor. When the water distribution plate drives several water injection pipes to move downward synchronously under the drive of the push-pull mechanism, the ends of several water injection pipes extend into the corresponding snow layer of the ice-like snow block to be manufactured after passing through the corresponding limiting holes, and at the same time add a certain amount of water to the corresponding snow layer of the ice-like snow block to be manufactured.

[0014] In one embodiment, a portion of the multiple water passages extend in the same direction as the length of the water distribution plate, while another portion extends in the same direction as the width of the water distribution plate.

[0015] Along the length of the water distribution plate, a portion of the multiple water passages are arranged in an array on the water distribution plate; along the width of the water distribution plate, another portion of the water passages are also arranged in an array on the water distribution plate.

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

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

[0018] The temperature and pressure sensor is a temperature and pressure probe; the difference d between the length of the temperature and pressure probe 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 tail end of the pipe body, and the peripheral side of the pipe body near the water injection head is covered with a heat insulation element.

[0020] The surface of the water injection head has a plurality of water injection holes, and the diameter d of the opening of each water injection hole satisfies: 0.2mm≤d≤0.5mm.

[0021] In one embodiment, each of the water injection heads includes a cylindrical portion and a pointed portion engaged at the end of the cylindrical portion, and the diameter of the cylindrical portion is larger than the diameter of the insulation element.

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

[0023] In one embodiment, an ice-like snow preparation assembly is provided, including a snow groomer and an ice-like snow preparation vehicle as described above, the ice-like snow preparation vehicle being able to move to a designated position under the traction of the snow groomer.

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

[0025] The hardness value of the corresponding snow layer for the ice-like snow block to be manufactured is calculated based on the pressure value of the different target snow layers.

[0026] Calculate the density values ​​of the different target snow layers for the ice-like snow blocks to be manufactured, based on the hardness values ​​of the different target snow layers.

[0027] ;

[0028] in, P To determine the hardness of the target snow layer within the ice-like snow block to be manufactured.ρ The density of the target snow layer in the ice-like snow block to be manufactured;

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

[0030] ;

[0031] in, ρ 冰 The desired density of the target snow layer to be produced to resemble ice; ρ 水 The density of water; R The theoretical water replenishment rate of the target snow layer in the ice-like snow block to be manufactured is then calculated; the theoretical amount of water to be added to the target snow layer in the ice-like snow block to be manufactured is then calculated.

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

[0033] ;

[0034] in, R i ’ The actual water replenishment rate of the target snow layer (i-th layer) R i For the first i Theoretical water replenishment rate of the target snow layer. T w The water injection temperature, T i For the first i Target snow layer temperature, a This is an empirical coefficient.

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

[0036] The beneficial effects of this invention are as follows: by controlling the water pump to calculate the required amount of water replenishment for the corresponding snow layer based on the pressure value of the target snow layer in the ice-like snow block to be manufactured obtained from the pressure sensor, when the water distribution plate drives several water injection pipes to move downward synchronously under the drive of the push-pull mechanism, the ends of several water injection pipes extend into the corresponding snow layer of the ice-like snow block to be manufactured after passing through the corresponding limiting holes, and at the same time replenish a certain amount of water into the corresponding snow layer of the ice-like snow block to be manufactured. Attached Figure Description

[0037] Figure 1This is a schematic diagram of the structure of the ice-like snow preparation assembly according to one embodiment of the present invention;

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

[0039] Figure 3 This is a schematic diagram of another state of the ice-like snow preparation vehicle according to one embodiment of the present invention;

[0040] Figure 4 This is a schematic diagram of the vehicle frame structure according to one embodiment of the present invention;

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

[0042] Figure 6 This is a schematic diagram of the structure of the water distribution plate in one embodiment of the present invention;

[0043] Figure 7 This is the present invention. Figure 6 Cross-sectional view of AA in the middle;

[0044] Figure 8 This is the present invention. Figure 6 Cross-sectional view of BB in the middle;

[0045] Figure 9 This is a schematic diagram of the water injection pipe in one embodiment of the present invention;

[0046] Figure 10 This is a summary table of existing hardness testing equipment (from the literature: Ren Zaichao. Technical improvement and experimental research of snow penetration tester. 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; 1000. Guide groove; 101. Support; 102. Column; 103. Pulley structure; 104. High limit switch; 105. Low limit switch;

[0049] 11. Water injection assembly; 110. Water pump; 111. Fixing plate; 1110. Limiting 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 pipe; 18. Traction arm; 2. Snow groomer; 3. Snow blocks to be manufactured. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0052] refer to Figure 1 and Figure 2 The present invention provides an ice-like snow preparation vehicle 1, including a frame 10, a water injection assembly 11 mounted on the frame 10, a push-pull mechanism 12 for pushing and pulling the water distribution plate 112 in the water injection assembly 11, and a pressure sensor and control module 140. The predetermined water injection pressure for injecting water into the water distribution plate 112 is calculated based on the pressure value of the ice-like snow block 3 to be manufactured obtained by the pressure sensor, and a certain amount of water is added to the ice-like snow block 3 to be manufactured through the water distribution plate 112 under the drive of the push-pull mechanism 12.

[0053] like Figure 3 and Figure 4 As shown, the frame 10 includes a ski 100, wherein the bottom of the ski 100 is curved from the middle to both ends, and the opening direction of the ski 100 is opposite to the ground direction, in order to reduce the resistance of the ice-like snow preparation vehicle 1 during movement. Specifically, the bottom of the ski 100 may have a plurality of guide grooves 1000, and the length direction of the guide grooves 1000 is parallel to the length direction of the ski 100, so as to assist the ice-like snow preparation vehicle 1 in gliding on the surface of the snow block to be produced, and at the same time ensure the stability of the ice-like snow preparation vehicle 1 in its movement. More specifically, the width d and depth h of the guide grooves 1000 can satisfy: 2cm ≥ d ≥ 1cm, 2cm ≥ h ≥ 1cm.

[0054] The water injection assembly 11 includes a water pump 110, a fixing plate 11 mounted on the ski 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-like snow preparation vehicle 1 may also include a bracket 101 mounted on the ski 100 for supporting the water pump compartment 15 and the control compartment 14, with the water pump 110 and the control module 140 housed within the water pump compartment 15 and the control compartment 14. The fixing plate 11 has a plurality of limiting holes 1110 extending along its thickness direction, corresponding to the number of water injection pipes 113. Along the thickness direction of the water distribution plate 112, a plurality of water passages 1120 connected to the water injection pipes 113 are formed within the water distribution plate 112. Clearly, each water injection pipe 113 extends downward through a corresponding limiting hole 1110. Preferably, in order to reduce the resistance of the water injection pipe 113 being inserted into the ice-like snow block 3 to be manufactured, each water injection pipe 113 can be cylindrical in shape, and correspondingly, each limiting hole 1110 can be a circular through hole.

[0055] It should be noted that when the ice-like 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 housed in the corresponding limiting hole 1110, and in order to prevent the water in the water injection head 1131 from freezing during this process, each positioning hole is provided with an electric heating wire that has been insulated and protected.

[0056] In one specific embodiment, a plurality of square through holes are arrayed on the fixing plate 11 along its thickness direction, and limiting holes 1110 are respectively machined at the intersection areas of the plurality of crisscrossing ribs. The side length d of the through holes can satisfy: 20 cm ≥ d ≥ 15 cm. Of course, in other specific embodiments, the limiting holes 1110 can also have other shapes and / or sizes. The diameter d of the limiting holes 1110 can satisfy: 2 cm ≥ d ≥ 4 cm.

[0057] The push-pull mechanism 12 can control and drive the water distribution plate 112 to reciprocate linearly along the height direction of the frame 10. The height 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 of the end of the push-pull mechanism 12 hinged to the top of the water distribution plate from the ground, so as to adjust the depth of the several water injection pipes 113 on the water distribution plate 112 into the snow blocks to be produced. For example, the push-pull mechanism 12 can be a hydraulic push rod, a cylinder push rod, an electric push rod, or a lead screw push rod, etc.

[0058] The temperature and pressure sensing unit 13 includes a pressure sensor for acquiring the pressure value of the corresponding snow layer (multi-layered, see below for details) in the ice-like snow block 3 to be manufactured. It should be noted that during the ice-like snow manufacturing process of the ice-like snow preparation vehicle 1, the thickness of each target snow layer needs to be calculated based on the lifting speed of the water distribution plate 112 and the sampling frequency of the control module 140. Several water injection pipes 113 inject water into the target snow layer sequentially from the uppermost target snow layer in the ice-like snow block 3 to the lower target snow layer, until the end of the water injection pipe 113 reaches the target position of the lowermost or bottommost snow layer in the ice-like snow block 3. Clearly, the water injection pipe 113 injects water into the entire target snow layer at the target position (or the water injection position, which is at the bottom of the target snow layer).

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

[0060] The control module 140 calculates the required water replenishment amount for the target snow layer based on the pressure value of the target snow layer in the ice-like snow block 3 obtained by the pressure sensor. Simultaneously, it controls the water pump 110 to inject water into the water distribution plate 112 at a predetermined water pump 110 injection pressure (the calculation method is detailed below). The water injected into the water distribution plate 112 then flows through the water injection pipe 113 into the target snow layer. This indirectly controls the amount of water injected into the water distribution plate 112 by the water pump 110 (which is the required water replenishment amount for the target snow layer). Simultaneously, the control module 140 controls the push-pull mechanism 12 to drive the water distribution plate 112 downwards. As the water distribution plate 112 moves downwards, the injection heads 1131 of the several water injection pipes 113 all extend into the target snow layer of the ice-like snow block after passing through the corresponding limiting holes 1110, simultaneously replenishing the target snow layer with a fixed amount of water.

[0061] It should be noted that, as mentioned above, this refers to the process by which several water injection pipes 113 inject a fixed amount of water into the corresponding snow layer as the uppermost target snow layer of the ice-like snow block 3 moves sequentially to the lower target snow layer. In other words, the water injection pipes 113 inject the amount of water required to replenish the target snow layer into the target snow layer. Therefore, the amount of water injected or the amount of water required to replenish different target snow layers is usually different.

[0062] Optionally, the frame 10 is assembled from multiple columns 102, each column 102 being equipped with a pulley structure 103 for driving the water distribution plate 112 to move up and down. A high-position limit switch 104 and a low-position limit switch 105 are installed on each column 102. The water distribution plate 112 is positioned between the high-position limit switches 104 and 105, allowing the position of the water distribution plate 112 to be adjusted via the high-position limit switches 104 and 105, thereby positioning the water injection pipe 113 at the target position under the action of the water distribution plate 112. It is understood that the distance between the high-position limit switches 104 and 105 and the surface of the snow block 3 to be manufactured can be adjusted to achieve the purpose of injecting water into snow blocks 3 of different thicknesses. Of course, in other specific embodiments, the up and down movement of the water distribution plate 112 can also be achieved through other methods.

[0063] Optionally, the ice-like snow preparation vehicle 1 may also include a water tank 16 and a water inlet pipe 17, which 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 inlet pipe 17 is connected to the water outlet of the water tank 16, and the other end is connected to the water inlet of the water pump 110. Specifically, heating equipment and temperature sensors may also be installed in the water tank 16 to keep the water temperature between 10℃ and 15℃, so as to prevent water with too low a temperature from freezing during transportation or injection, which would cause the ice-like snow preparation vehicle 1 to malfunction or cause uneven water volume injected into different target snow layers of the ice-like snow blocks 3 to be manufactured; water with too high a temperature is prone to forming voids and discontinuous ice bodies after being injected into the ice-like snow blocks to be manufactured (which will also lead to the aforementioned uneven water volume phenomenon). Preferably, in order to prevent the water in the water tank 16 and the water pipe 17 from freezing, the water tank 16 and the water pipe 17 are covered with an insulation layer.

[0064] In one specific implementation, reference is made to Figure 6 , Figure 7 and Figure 8 In this embodiment, a portion of the water-passing channels 1120 extend in the same direction as the length of the water-dividing plate 112, while another portion extends in the same direction as the width of the water-dividing plate 112. In this specific embodiment, the water-dividing plate 112 can be rectangular; that is, the number of water-passing channels 1120 extending in the same direction as the length of the water-dividing plate 112 is greater than the number of water-passing channels extending in the same direction as the width of the water-dividing plate 112.

[0065] Along the length of the water distribution plate 112, a portion of the multiple water passages 1120 are arranged in an array on the water distribution plate 112; along the width of the water distribution plate 112, another portion of the water passages 1120 are also arranged in an array on the water distribution plate 112, forming several intersecting areas. The bottom surface of the water distribution 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 is connected to the corresponding limiting hole 1110 (when the fixing plate 11 supports the water distribution plate 112), and the other end is connected to the corresponding intersecting area formed by the multiple water passages 1120 in the width direction and the multiple water passages 1120 in the length direction of the water distribution plate 112, so that the water in the water tank 16 can be transported to each water injection pipe 113 through the water passages 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 by means of a threaded connection.

[0066] In one specific embodiment, the cross region at the middle of the water distribution plate 112 has a second mounting hole 1122, and the tip of the pressure sensor is mounted into the second mounting hole 1122. Furthermore, in this specific embodiment, as... Figure 5 As shown, in order to insert the temperature and pressure sensing unit 13 into the corresponding snow layer of the ice-like snow block 3 before the water injection pipe 113, so as to obtain the target snow layer hardness and temperature value, the difference d between the length of the temperature and pressure sensing unit 13 and the length 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 probe.

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

[0068] In one specific implementation, such as Figure 9 As shown, each water injection pipe 113 includes a pipe body 1130 and a water injection head 1131 fixed to the tail end of the pipe body 1130. In order to prevent the water in the water injection pipe 113 from freezing, the peripheral part of the pipe body 1130 near the water injection head 1131 is covered with a heat insulation element. In this specific embodiment, the heat insulation element can be a heat insulation pipe.

[0069] The surface of the water injection head 1131 has several water injection holes 1131a. In order to prevent the water injection holes 1131a from becoming blocked, and to avoid the water injection holes 1131a being too large and damaging the target snow layer in the ice-like snow to be produced or causing water waste, the diameter d of the opening of each water injection hole 1131a can satisfy: 0.2mm≤R≤0.5mm.

[0070] In one 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 joined 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 one specific embodiment, the head of the temperature and pressure sensing unit 13 is conical in shape, and as shown... Figure 10 As shown, to facilitate the conversion between the pressure and hardness of the target snow layer, the values ​​of the cone angle and the cone base diameter need to be selected from the existing hardness measurement equipment. In this specific embodiment, the cone angle of the temperature and pressure sensing unit 13 is 60°, and the range of the cone base diameter d is: 40 mm ≥ d ≥ 25 mm.

[0072] In one specific embodiment, an ice-like snow preparation assembly is provided, including a snow groomer 2 and an ice-like snow preparation vehicle 1 as described above, the ice-like snow preparation vehicle 1 being able to move to a designated position under the traction of the snow groomer 2. Optionally, the ice-like snow preparation vehicle 1 may further include a towing arm 18 for easy connection to the snow groomer 2.

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

[0074] ;

[0075] in, F The pressure of the target snow layer in the snow block 3 to be produced into ice-like snow accumulation. r Let be the radius of the cone base of the pressure sensor. Then, using the formula below, calculate the density value of the corresponding snow layer in the target snow layer of the ice-like snow block to be manufactured.

[0076] ;

[0077] This formula is derived from a linear fit of a large amount of experimental data, where R0 2 R represents the goodness of fit of the samples; 2 =1 indicates that the fully correlated scatter plot presents a standard straight line; R 2 =0 indicates that there is no linear relationship between the two; using P Value calculated ρ actual value ， R 2 The closer the value is to 1, the better the fit; that is, using... P Value calculated ρ The closer the value is to the actual value; P To determine the hardness of the target snow layer in the ice-like snow block 3 to be manufactured. ρ The density of the target snow layer in the snow block to be manufactured is given; the theoretical water replenishment rate is calculated using the density value of the target snow layer in the snow block to be manufactured and the formula.

[0078] ;

[0079] in, ρ 冰 The desired density of the target snow layer in the target ice-like snow block 3 to be manufactured; ρ 水 The density of water; R The theoretical water replenishment rate of the target snow layer in the ice-like snow block 3 to be manufactured is then calculated; the theoretical amount of water to be added to the corresponding snow layer in the ice-like snow block 3 to be manufactured is then calculated.

[0080] In one specific embodiment, since the temperature of the target snow layer affects the vertical infiltration distance and horizontal diffusion distance of the water during the process of injecting water into the target snow layer of the ice-like snow block 3, in order to more accurately calculate the amount of water replenished to the corresponding snow layer in the ice-like snow block 3, 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 block 3 (obtained by the temperature sensor in the temperature and pressure sensing element, the temperature sensor diagram is not shown).

[0081] ;

[0082] in, R i ’ The actual water replenishment rate of the target snow layer (i-th layer) R i For the first i Theoretical water replenishment rate of the target snow layer. T w The water injection temperature, T i For the first i Target snow layer temperature, a This is an empirical coefficient.

[0083] In one specific embodiment, the amount of water to be added to the corresponding snow layer in the target ice-like snow block 3 is calculated by multiplying the actual water replenishment rate of the target snow layer in the target ice-like snow block 3 by the volume of the corresponding snow layer in the target ice-like snow block 3. Referring to the foregoing, the thickness of each target snow layer needs to be calculated based on the lifting speed of the water distribution plate 112 and the sampling frequency of the control module 140. For example, if the movement speed of the water injection component 11 is 6cm / s (the distance moved per second is 6cm), and the sampling frequency of the control module 140 is 5Hz (there are 5 sampling points per second), then the thickness of each target snow layer in the target ice-like snow block 3 is 6cm / s / 5Hz, which equals 1.2cm. The following example illustrates how to calculate the volume of the corresponding snow layer in the ice-like snow block 3 to be manufactured. First, assuming that the horizontal and vertical distance between two adjacent water injection pipes 113 is 20cm, then the volume of the target snow layer covered by the water delivered by each water injection pipe 113 is 20cm × 20cm × 1.2cm = 480 cm³. 3, If the ice-like snow preparation vehicle 1 is equipped with a total of 238 water injection pipes 113, then the volume of each target snow layer in the ice-like snow block 3 to be manufactured is 238 × 480 cm. 3 =114240cm 3 .

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

[0085] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A vehicle for preparing ice-like snow, characterized in that, include: The frame, including the skis; The water injection assembly includes a fixed plate mounted on the ski, a water distribution plate supported on the fixed plate, and a plurality of water injection pipes assembled to the water distribution plate; The fixing plate has several limiting holes that penetrate the fixing plate along the thickness direction and are adapted to the number of water injection pipes. Along the thickness direction of the water distribution plate, several water passages connected to the water injection pipes are formed in the water distribution plate. The push-pull mechanism can drive the water distribution plate to reciprocate linearly along the height direction of the vehicle frame, and the height of the end of the push-pull mechanism hinged to the periphery of the vehicle frame from the ground is greater than the height of the end of the push-pull mechanism hinged to the top of the water distribution plate from the ground. The temperature and pressure sensing unit includes a pressure sensor for acquiring the corresponding snow layer pressure value of the ice-like snow block to be manufactured; The control module is used to calculate the required amount of water to be added to the corresponding snow layer based on the pressure value of different target snow layers in the ice-like snow block to be manufactured obtained by the pressure sensor. When the water distribution plate drives several water injection pipes to move downward synchronously under the drive of the push-pull mechanism, the ends of several water injection pipes extend into the corresponding snow layer of the ice-like snow block to be manufactured after passing through the corresponding limiting holes, and at the same time add a certain amount of water to the corresponding snow layer of the ice-like snow block to be manufactured.

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

3. The ice-like snow preparation vehicle according to claim 2, characterized in that, The cross area in the middle of the water distribution plate has a second mounting hole, and the first end of the temperature and pressure sensing unit is installed into the second mounting hole; The temperature and pressure sensing unit is a temperature and pressure probe; the difference d between the length of the temperature and pressure probe and the length of the water injection pipe satisfies: 10cm≤d≤20cm.

4. The ice-like snow preparation vehicle according to claim 1, characterized in that, Each of the water injection pipes includes a pipe body and a water injection head fixed to the tail end of the pipe body, and the peripheral side of the pipe body near the water injection head is covered with a heat insulation element. The surface of the water injection head has 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-like snow preparation vehicle according to claim 4, characterized in that, Each of the water injection heads includes a cylindrical portion and a pointed portion engaged at the end of the cylindrical portion, wherein the diameter of the cylindrical portion is larger than the diameter of the insulation element.

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

7. An assembly device for preparing ice-like snow, characterized in that, Includes a snow groomer and an ice-like snow preparation vehicle as described in any one of claims 1-6, wherein the ice-like snow preparation vehicle is capable of moving to a designated position under the traction of the snow groomer.

8. A method for calculating the amount of water injected into a target location by an ice-like snow preparation vehicle, characterized in that, Applied to the ice-like snow preparation vehicle as described in any one of claims 1-6; The hardness value of the corresponding snow layer for the ice-like snow block to be manufactured is calculated based on the pressure value of the different target snow layers. Calculate the density values ​​of the different target snow layers for the ice-like snow blocks to be manufactured, based on the hardness values ​​of the different target snow layers. ； in, P To determine the hardness of the target snow layer within the ice-like snow block to be manufactured. ρ 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 using the density values ​​of different target snow layers in the snow block to be manufactured into ice-like snow. The formula is as follows: ； in, ρ 冰 The desired density of the target snow layer to be produced to resemble ice; ρ 水 The density of water; R The theoretical water replenishment rate of the target snow layer in the ice-like snow block to be manufactured is then calculated; the theoretical amount of water to be added to the target snow layer in the ice-like snow block to be manufactured is then calculated.

9. The method for calculating the amount of water injected into a target location by the ice-snow preparation vehicle according to claim 8, characterized in that, The actual water replenishment rate is calculated based on the temperature of the target snow layer in the ice-like snow block to be manufactured, obtained by the temperature and pressure sensing unit. ； in, R i ’ The actual water replenishment rate of the target snow layer (i-th layer) R i For the first i Theoretical water replenishment rate of the target snow layer. T w The water injection temperature, T i For the first i Target snow layer temperature, a This is an empirical coefficient.

10. The method for calculating the amount of water injected into a target location by the 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 is calculated by multiplying the actual water replenishment rate of the target snow layer in the target ice-like snow block by the volume of the target snow layer in the target ice-like snow block.

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