A refrigerant charging device and a charging method

Abstract

The application discloses a refrigerant charging device and a charging method, and belongs to the technical field of refrigerant charging devices. The refrigerant charging device comprises a moving mechanism and a charging assembly. A support is arranged on the top of the moving mechanism. A rotating plate is embedded in the support. A support rod is in plug-in cooperation with the rotating plate. A fixed frame is arranged on the periphery of the support rod. A clamping assembly for positioning and fixing the charging assembly is arranged in the fixed frame. A sliding groove is arranged on one side of the bottom of the support rod. An extension plate is slidably arranged in the sliding groove. A cooperation assembly is arranged between the extension plate and the clamping assembly. When the charging assembly is placed on the extension plate, the extension plate moves downward and drives the clamping assembly to move relatively through the cooperation assembly to complete the clamping and positioning of the charging assembly. Through the cooperation of the clamping assembly, the cooperation assembly and the extension plate, the clamping mechanism is driven to move by the self-weight of the charging assembly, so that the quick, automatic centering and stable clamping of different size tank bodies are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerant charging device, and particularly relates to a refrigerant charging device and a charging method. BACKGROUND

[0002] In the field of manufacturing and maintenance of air conditioners and refrigeration equipment, the charging of refrigerant is a key operation, and the accuracy of the charging directly affects the operation efficiency, service life and safety of the equipment.

[0003] In the prior art, when the charging device tank is protected, the damper cooperates with the clamping ring to realize the protection of the charging device tank in the transportation process. However, since the clamping ring is usually designed in a fixed size, when it faces a smaller tank, the clamping ring cannot provide sufficient constraint, so that the tank may still shake or displace in the transportation process, affecting the stability. On the contrary, when the tank size is larger, the clamping ring can only contact the tank locally through the two side edges, and the actual effective contact area is significantly reduced. This local contact not only limits the utilization of the structure of the clamping ring, but also may cause stress concentration when a larger external force is applied, thereby increasing the risk of damage to the surface of the tank or structural deformation.

[0004] Therefore, it is necessary to provide a refrigerant charging device and a charging method to solve the above technical problems. SUMMARY

[0005] The present application aims to provide a refrigerant charging device and a charging method to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a mobile mechanism and a charging assembly are included, a support is arranged on the top of the mobile mechanism; a rotating plate is embedded in the support, a support rod is inserted and cooperatively arranged on the rotating plate, a fixed frame is arranged on the periphery of the support rod, a clamping assembly for positioning and fixing the charging assembly is arranged in the fixed frame, a sliding groove is arranged on one side of the bottom of the support rod, an extension plate is slidably arranged in the sliding groove, and a cooperation assembly is arranged between the extension plate and the clamping assembly. When the charging assembly is placed on the extension plate, the extension plate moves downward, and the clamping assembly is driven to move relatively by the cooperation assembly, so as to complete the clamping and positioning of the charging assembly.

[0007] As a further scheme of the present application: the clamping assembly includes a first clamping plate and a second clamping plate, the two ends of the first clamping plate and the second clamping plate are respectively slidably connected with the fixed frame, a first pull rope is connected between the side wall of one end of the second clamping plate and the center side wall of the first clamping plate, a second pull rope is connected with the side wall of one end of the first clamping plate, and the end of the second pull rope away from the first clamping plate is fixed with the cooperation assembly.

[0008] As a further scheme of the present application, the matching assembly comprises a base slidingly arranged in the sliding groove, and the end of the second pull rope is fixedly connected to the top of the base.

[0009] As a further scheme of the present application, the base is elastically provided with inserting rods, and the two groups of inserting rods are provided with trigger blocks between them.

[0010] As a further scheme of the present application, the first clamping plate and the second clamping plate are both rotationally arranged with rotating rollers on one side of the filling assembly.

[0011] As a further scheme of the present application, the two sides of the rotating plate are rotationally connected to the support through rotating shafts, the top of the rotating plate away from the support rod is provided with an electronic scale, the bottom of the rotating plate is fixedly provided with a gravity block, one side of the gravity block is fixedly provided with a positioning rod, the positioning rod is provided with a limiting mechanism, the bottom of the support is fixedly provided with a clamping piece corresponding to the limiting mechanism, and the bottom end of the connecting position of the support rod and the rotating plate is provided with a driving mechanism.

[0012] As a further scheme of the present application, the limiting mechanism comprises a lock rod and a limiting block, the positioning rod is internally provided with an air cavity, the limiting block is slidingly embedded at the end of the air cavity, the lock rod is rotationally connected to the end of the air cavity close to the gravity block, the air cavity is further slidingly provided with a piston, and the piston is clamped and matched with the lock rod; the clamping piece comprises a semicircular block and a semicircular ring, and the opposite sides of the semicircular block and the semicircular ring are provided with arc-shaped grooves corresponding to the limiting block.

[0013] As a further scheme of the present application, the driving mechanism comprises a pushing block and a pushing rod; the pushing block is slidingly embedded in one end of the connecting position of the support rod and the rotating plate, the top of the pushing block is fixedly connected with a pull rod, and the top of the pushing block is fixedly connected with a pull rod.

[0014] As a further scheme of the present application, the end of the connecting position of the support rod and the rotating plate is slidingly embedded with a limiting column on the two side walls, and the connecting position of the rotating plate and the support rod is provided with a transmission mechanism; the transmission mechanism comprises a transmission wheel and a winding roller, the transmission wheel is rotationally connected to the connecting position of the rotating plate and the support rod, the transmission wheel is transmissionally connected with the winding roller, the winding roller is provided with a traction rope wound thereon, the transmission wheel is rollingly and frictionally matched with the side wall of the support rod, and the end of the traction rope away from the winding roller is fixedly connected to the piston.

[0015] As a further scheme of the present application: a refrigerant charging method of the refrigerant charging device according to any one of the preceding schemes, comprising the following steps:

[0016] S1, moving the whole device to the vicinity of the device to be charged by the moving mechanism;

[0017] S2, starting the vacuum pump to complete the vacuumizing operation on the device to be charged;

[0018] S3, removing the support rod from the rotating plate, and the rotating plate will automatically rotate to the horizontal state by the gravity of the gravity block, so that the electronic scale is in the horizontal working position;

[0019] S4, vertically inserting the support rod into the rotating plate, triggering the limiting mechanism in the positioning rod through the driving mechanism at the bottom of the support rod, so that it is locked with the clamping piece at the bottom of the support, thereby fixing the rotating plate in the horizontal state, and ensuring the stability of the charging process;

[0020] S5, placing the tank of the charging assembly into the fixed frame, so that the bottom thereof is pressed on the extension plate;

[0021] S6, connecting the valve of the charging assembly with the device to be charged through the connecting pipe, opening the valve for charging, and the electronic scale monitors the weight reduction of the tank in real time during the charging process, and when the weight reduction reaches the preset charging amount, the valve is closed, and the charging is completed.

[0022] Compared with the prior art, the present application has the beneficial effects that: through the cooperation of the clamping assembly, the cooperation assembly and the extension plate, the movement of the clamping mechanism driven by the self-weight of the charging assembly is realized, the quick and automatic centering and stable clamping of the tank body of different sizes are realized, the limiting of the first clamping plate and the second clamping plate is realized through the cooperation of the trigger block, the magnet, the insertion rod and the positioning hole, and the problem that the existing clamping ring surface is small in contact area and causes stress concentration when clamping the tank body of large size, and the tank body may be damaged is avoided; then, through the cooperation of the gravity block and the rotating plate, the self-adaptive horizontal adjustment of the electronic scale is realized, the weighing error caused by uneven ground is avoided, and the measurement accuracy of the refrigerant charging amount is improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front three-dimensional structure schematic diagram of the present application.

[0024] Figure 2 It is a structure schematic diagram of the charging assembly in the present application.

[0025] Figure 3 It is a structure schematic diagram of the middle part of the bracket in the present application.

[0026] Figure 4 It is a structure schematic diagram of the fixed frame in the present application.

[0027] Figure 5 Structure diagram of the base and the trigger block in the present application Figure 4 Structure diagram of the base and the trigger block in the present application

[0028] Figure 6 Structure diagram of the base and the trigger block in the present application

[0029] Figure 7 Structure diagram of the base and the trigger block in the present application Figure 3 Structure diagram of the base and the trigger block in the present application

[0030] Figure 8 Structure diagram of the base and the trigger block in the present application

[0031] Figure 9 Structure diagram of the base and the trigger block in the present application

[0032] Figure 10 Structure diagram of the base and the trigger block in the present application Figure 9 Structure diagram of the base and the trigger block in the present application

[0033] Figure 11 Structure diagram of the base and the trigger block in the present application

[0034] Figure 12 Structure diagram of the base and the trigger block in the present application

[0035] Figure 13 Structure diagram of the base and the trigger block in the present application

[0036] Figure: 1, moving mechanism; 100, support; 2, rotating plate; 3, fixed frame; 4, support rod; 5, filling assembly; 6, first clamping plate; 7, second clamping plate; 8, gravity block; 9, extension plate; 901, sliding groove; 10, positioning rod; 101, locking rod; 102, piston; 103, limiting block; 11, semicircular block; 111, semicircular ring; 12, pull rod; 13, push block; 131, limiting column; 14, push rod; 15, transmission wheel; 16, winding roller; 161, traction rope; 17, rotating roller; 18, first pull rope; 19, second pull rope; 20, magnet; 21, base; 22, trigger block; 23, positioning hole; 24, insertion rod; 25, electronic scale. DETAILED DESCRIPTION

[0037] Please refer to Figures 1-13In this embodiment of the invention, a refrigerant charging device includes a moving mechanism 1 and a charging component 5. A bracket 100 is provided on the top of the moving mechanism 1, and the charging component 5 is disposed on the bracket 100. A rotating plate 2 is embedded in the bracket 100, and a support rod 4 is inserted and fitted on the rotating plate 2. The support rod 4 is located at the center of one end of the rotating plate 2. A fixing frame 3 is provided around the support rod 4, and a clamping component for positioning and fixing the charging component 5 is provided inside the fixing frame 3. A sliding groove 901 is provided on one side of the bottom of the support rod 4, and an extension plate 9 is slidably disposed in the sliding groove 901. A mating component is provided between the extension plate 9 and the clamping component. When the charging component 5 is placed on the extension plate 9, the extension plate 9 moves downward, and the clamping component is driven to move relative to it through the mating component, so as to complete the clamping and positioning of the charging component 5.

[0038] It should be noted that: the bottom of the moving mechanism 1 is equipped with casters, and the moving mechanism 1 is a common device in the prior art for loading and transporting the charging component 5. The detailed structure and working principle will not be described in detail here. A vacuum pump is also provided on the top side of the moving mechanism 1 away from the support 100. The vacuum pump is used to evacuate the device to be charged before charging the refrigerant, thereby facilitating the charging operation of the charging component 5. The charging component 5 includes a tank and a valve. The valve is installed on the top of the tank. The tank is used to hold the refrigerant for charging, and the valve controls the discharge of the refrigerant in the tank. A connection port is also provided at one end of the valve for connecting with an external device to be charged with refrigerant. Both the charging component 5 and the moving mechanism 1 are prior art, and their detailed structure and working principle will not be described in detail here.

[0039] The end of the extension plate 9 away from the support rod 4 is circular, and both the upper and lower surfaces are equipped with buffer rubber rings. These buffer rubber rings provide cushioning when the filling assembly 5 is placed, and absorb the impact force generated by bumps during transportation, thereby protecting the filling assembly 5 from damage.

[0040] Please see Figures 1-6 The clamping assembly includes a first clamping plate 6 and a second clamping plate 7. The first clamping plate 6 is positioned above the second clamping plate 7. The two ends of the first clamping plate 6 and the second clamping plate 7 are slidably connected to the fixed frame 3, and the first clamping plate 6 and the second clamping plate 7 are symmetrically arranged along the center of the fixed frame 3, that is, the first clamping plate 6 and the second clamping plate 7 cooperate to form a "well" shape. A first pull rope 18 is provided between one end side wall of the second clamping plate 7 and the center side wall of the first clamping plate 6. A second pull rope 19 is provided on one end side wall of the first clamping plate 6. The end of the second pull rope 19 away from the first clamping plate 6 is fixed to the cooperating assembly.

[0041] Preferably, the fixed frame 3 is centrally provided with a square recess structure, the first pull rope 18 is slidably connected to the center of the side wall of the fixed frame 3 and the side of the first clamping plate 6 away from the filling assembly 5, in addition, the first clamping plate 6 and the second clamping plate 7 are both elastically connected to the inner wall of the fixed frame 3 by springs, so that in the initial state, the first clamping plate 6 and the second clamping plate 7 are respectively located close to the side wall of the fixed frame 3 under the corresponding elastic action, thereby facilitating the placement operation of the filling assembly 5 from the inside of the fixed frame 3.

[0042] Further, the matching assembly includes a base 21; the base 21 is slidably arranged in the sliding groove 901, one end of the second pull rope 19 away from the first clamping plate 6 is fixedly connected to the top of the base 21, the top of the extension plate 9 is fixedly provided with a magnet 20 which is adsorbed and matched with the base 21, the base 21 is arranged above the extension plate 9, and the top of one end of the extension plate 9 close to the sliding groove 901 is fixedly provided with an elastic column, the elastic column is arranged in the sliding groove 901 and the top end of the elastic column is fixedly arranged in the side wall of the supporting rod 4.

[0043] Preferably, the base 21 is provided in a structure suitable for sliding in the sliding groove 901, and the base 21 can only move vertically in the sliding groove 901, when the base 21 moves downward, the first clamping plate 6 is brought close to each other by the second pull rope 19, the first clamping plate 6 moves to bring the second clamping plate 7 close to each other by the first pull rope 18, and the first clamping plate 6 and the second clamping plate 7 move synchronously by the cooperation of the first pull rope 18 and the second pull rope 19, thereby facilitating the clamping and fixing of the filling assembly 5, in addition, the base 21 is made of a material that can be adsorbed by the magnet 20, and the adsorption matching force between the two satisfies the effect of moving the first clamping plate 6 and the second clamping plate 7 by the base 21, and when the first clamping plate 6 and the second clamping plate 7 are both in contact with the filling assembly 5 and cannot move, at this time if the extension plate 9 continues to move downward, the magnet 20 will be separated from the base 21.

[0044] Further, preferably, the base 21 is centrally and elastically provided with a plug rod 24 close to one end of the elastic column, two groups of plug rods 24 are arranged between the base 21 and the elastic column, and the base 21 is slidably connected to the trigger block 22, and the sliding groove 901 is arranged with a plurality of positioning holes 23 which are slidably matched with the plug rods 24.

[0045] Preferably, the trigger block 22 is provided with inclined surfaces which are slidably matched with the ends of the plug rods 24, the positioning holes 23 are arranged in multiple groups in a vertical direction, the bottom of the trigger block 22 is adsorbed and matched with the magnet 20, and in use, after the first clamping plate 6 and the second clamping plate 7 complete the clamping and positioning of the filling assembly 5, the trigger block 22 moves downward under the attraction of the magnet 20 to drive the plug rods 24 to be inserted into the positioning holes 23, thereby limiting the first clamping plate 6 and the second clamping plate 7, and thereby realizing the stability of the filling assembly 5 during the filling operation.

[0046] The first clamping plate 6 and the second clamping plate 7 are rotationally arranged with a rotating roller 17 at the center of one side of the filling assembly 5, and the rotating roller 17 protrudes from one side of the first clamping plate 6 and the second clamping plate 7 to the side wall of the filling assembly 5. In this way, after the first clamping plate 6 and the second clamping plate 7 are attached to the filling assembly 5 and cannot be moved, the filling assembly 5 can still be vertically downwardly slid until it is in contact with the rotating plate 2, thereby avoiding the situation that the first clamping plate 6 and the second clamping plate 7 cannot be moved after they complete clamping and positioning of the filling assembly 5, which leads to suspension and affects the filling operation.

[0047] In actual use, in the initial state where the filling assembly 5 is not placed on the support 100, the first clamping plate 6 and the second clamping plate 7 are closest to the side wall of the fixed frame 3 under the corresponding elastic action, and the extension plate 9 is closest to the fixed frame 3 under the action of the elastic column. At this time, the base 21 is adsorbed and matched with the magnet 20 on the extension plate 9, the top of the trigger block 22 protrudes from the top of the base 21, and the insertion rod 24 is retracted in the side wall of the base 21. When it is necessary to place the filling assembly 5, the bottom of the filling assembly 5 is placed corresponding to the center of the fixed frame 3, and then the bottom of the filling assembly 5 is attached to the extension plate 9 and presses the extension plate 9 downward, so that the extension plate 9 moves downward under the limitation of the sliding groove 901, and then the second pull rope 19 is moved through the cooperation of the magnet 20 and the base 21, and the first clamping plate 6 and the second clamping plate 7 are synchronously moved to the filling assembly 5 through the first pull rope 18. When the first clamping plate 6 and the second clamping plate 7 are attached to the filling assembly 5 and cannot be moved, the filling assembly 5 continues to press the extension plate 9 downward by relying on its own gravity and rolling through the rotating roller 17, and then the base 21 is separated from the magnet 20, and then the trigger block 22 moves downward with the magnet 20 because there is still a downward movement condition, and then the insertion rod 24 moves to the two sides of the base 21 and extends into the corresponding positioning hole 23, so as to limit the first clamping plate 6 and the second clamping plate 7, thereby avoiding the problem that the existing clamping ring face causes stress concentration due to a small contact area when it is used to clamp a large-sized tank body, which may cause damage to the tank body. Then, when the filling assembly 5 is stable, the filling operation can be performed, and different sizes of tank bodies in the filling assembly 5 are positioned and clamped through the cooperation of the first clamping plate 6 and the second clamping plate 7, thereby improving the applicability.

[0048] In the prior art, when the refrigerant is filled, the filling amount is generally determined by manual experience, and of course a standard weighing device, such as an electronic scale 25, is also used to achieve accurate filling by monitoring the change of the weight of the refrigerant tank body. However, the electronic scale 25 must be in a horizontal state during use to effectively measure the weight, and in actual use, the ground at the site is often uneven, which causes the device loaded with the electronic scale 25 to be inclined, so that the electronic scale 25 cannot be kept horizontal, thereby introducing a weighing error and affecting the filling accuracy. Figures 1-3 、 Figures 7-13As shown, preferably, the two sides of the rotating plate 2 are rotatably connected to the support 100 through rotating shafts, the top side of the rotating plate 2 away from the support rod 4 is provided with an electronic scale 25, the electronic scale 25 is arranged below the extension plate 9, one side of the bottom of the support 100 is fixedly provided with a clamping piece, the bottom of the rotating plate 2 is fixedly provided with a gravity block 8, one side of the gravity block 8 is fixedly provided with a positioning rod 10, the positioning rod 10 is provided with a limiting mechanism corresponding to the clamping piece, the bottom end of the connection between the support rod 4 and the rotating plate 2 is provided with a driving mechanism, when the support rod 4 and the rotating plate 2 are matched, the driving mechanism drives the limiting mechanism to cooperate with the clamping piece to limit the position of the rotating plate 2 through the positioning rod 10 and the gravity block 8.

[0049] It should be noted that: the material of the gravity block 8 can be a lead block, and the gravity block 8 is arranged at the bottom of the rotating plate 2, and the center and the gravity center of the gravity block 8 are on the same horizontal line as the center line of the rotating plate 2, the center and the gravity center of the electronic scale 25 and the extension plate 9 are also on the same horizontal line as the center of the rotating plate 2, so under the action of gravity, the gravity block 8 will be vertically downward, thereby driving the rotating plate 2 to rotate to a horizontal state, the end of the positioning rod 10 close to the semicircular block 11 is a cylindrical structure, which makes it better cooperate with the clamping piece, there is a gap between the support 100 and the rotating plate 2 and meets the condition that the rotating plate 2 rotates on the support 100, when the support rod 4 and the rotating plate 2 are not matched and installed, the limiting mechanism is separated from the clamping piece.

[0050] In specific use, when performing refrigerant charging operation, the support 100 is moved to the position to be charged by the moving mechanism 1, if the charging assembly 5 has been placed in the fixed frame 3, at this time, it needs to be taken off from the rotating plate 2 with the support rod 4, then the rotating plate 2 will be in a horizontal position under the action of the gravity block 8, because the gravity block 8 is arranged at the bottom of the rotating plate 2, and the center and the gravity center of the gravity block 8 are on the same horizontal line as the center line of the rotating plate 2, so under the action of gravity, the gravity block 8 will be vertically downward, thereby driving the rotating plate 2 and the electronic scale 25 to rotate to a horizontal state, at this time, the support rod 4 is inserted into the rotating plate 2, and the position of the support rod 4 inserted into the rotating plate 2 is on the center line of the rotating plate 2, the rotating plate 2 will not rotate when the support rod 4 is vertically inserted, when the support rod 4 and the rotating plate 2 are matched, the driving mechanism drives the limiting mechanism to limit the cooperation with the clamping piece, the position of the rotating plate 2 is limited through the positioning rod 10 and the gravity block 8, so that the rotating plate 2 will not rotate during the refrigerant charging operation, after adjusting the level, the charging assembly 5 is placed in the clamping assembly, and the charging operation can be performed, the center of the charging assembly 5 and the center of the electronic scale 25 are corresponded through the clamping assembly, and the charging amount of the charging assembly 5 is accurately measured under the action of the rotating roller 17, so as to ensure that the refrigerant charging amount reaches the standard value.

[0051] Further, as shown in Figures 7-13 The limiting mechanism includes a locking rod 101 and a limiting block 103. The positioning rod 10 is provided with an air cavity. The limiting block 103 is slidingly embedded at the end of the air cavity away from the gravity block 8. The locking rod 101 is rotationally connected at the end of the air cavity close to the gravity block 8. A tension spring is arranged between the end of the air cavity close to the gravity block 8 and the locking rod 101. When the driving mechanism pushes the locking rod 101 downward, the tension spring will be deformed. When the driving mechanism is away from the locking rod 101, the locking rod 101 can be reset to the horizontal state under the action of the tension spring. The end of the air cavity away from the locking rod 101 is elastically connected with a piston 102 through a spring. The piston 102 is clamped and matched at the end opposite to the locking rod 101. The piston 102 is sized to fit the air cavity and can slide in the air cavity. The driving mechanism drives the locking rod 101 to rotate downward and separate from the piston 102. When the piston 102 slides toward the limiting block 103, the piston 102 will compress the air in the air cavity to push the limiting block 103 to the sides, thereby cooperating with the clamping piece to limit the position. The side wall of the positioning rod 10 is open at the position where the locking rod 101 cooperates with the limiting block 103, which facilitates the cooperation between the driving mechanism and the locking rod 101.

[0052] It should be noted that the distance between the semicircular block 11 and the semicircular ring 111 is adapted to the diameter of the end of the positioning rod 10, and the radius is adapted to the rotating radius of the positioning rod 10. The semicircular block 11 and the semicircular ring 111 are concentrically arranged. The end of the positioning rod 10 away from the gravity block 8 is located between the semicircular block 11 and the semicircular ring 111.

[0053] Further preferably, the driving mechanism comprises a pushing block 13 and a pushing rod 14; the pushing block 13 is slidingly embedded in one end of the connecting part of the support rod 4 and the rotating plate 2, the top end of the pushing rod 14 is fixedly connected to the bottom of the pushing block 13, the top of the pushing block 13 is fixedly connected with a pulling rod 12, a spring is arranged between the pushing block 13 and the end of the support rod 4, the pulling rod 12 slidingly penetrates through the top of the support rod 4, and the top end of the pulling rod 12 is provided with a pull ring for convenience, the pull ring is clamped on the top end of the support rod 4 when not in use, the end of the pushing rod 14 away from the pushing block 13 slidingly penetrates through the side wall of the support rod 4 and cooperates with the limiting mechanism, the end of the support rod 4 and the rotating plate 2 are slidingly embedded with a limiting column 131 on both sides of the side wall, when the pushing block 13 moves away from the rotating plate 2, the limiting column 131 is driven to move towards the rotating plate 2 and extends into the side wall of the rotating plate 2 to limit the relative position of the support rod 4 and the rotating plate 2, a spring is arranged between the end of the limiting column 131 close to the pushing block 13 and the support rod 4, a transmission mechanism for cooperating with the piston 102 is arranged in the side wall of the connecting part of the rotating plate 2 and the support rod 4; the transmission mechanism comprises a transmission wheel 15 and a winding roller 16; the transmission wheel 15 is rotationally connected in the inner side wall of the connecting part of the rotating plate 2 and the support rod 4, the transmission wheel 15 is transmissionally connected with the winding roller 16, two fixed plates are fixedly connected to the bottom of the rotating plate 2 close to the support rod 4, the winding roller 16 is rotationally connected between the two fixed plates, and the two fixed plates are symmetrically arranged along the center line of the rotating plate 2, a traction rope 161 is wound on the winding roller 16, the transmission wheel 15 is rollingly and frictionally matched with the side wall of the support rod 4, and one end of the traction rope 161 away from the winding roller 16 is fixedly connected to the piston 102.

[0054] It should be noted that the pushing block 13 is of rectangular structure, and the four corners are chamfered, when the side edge thereof is in contact with the end of the limiting column 131 and slidingly matched, because the side edge of the pushing block 13 in contact with the end of the limiting column 131 is beveled, the limiting column 131 is driven to move towards the rotating plate 2 and into the rotating plate 2, thereby limiting the relative position of the support rod 4 and the rotating plate 2, and the transmission wheel 15 and the winding roller 16 are transmissionally connected through a transmission belt.

[0055] In particular, when the support rod 4 is not inserted into the rotating plate 2, the push block 13 is at the bottom of the inner wall of the support rod 4, the limiting column 131 is retracted in the support rod 4 under the action of the corresponding spring, the limiting block 103 is retracted in the positioning rod 10, the lock rod 101 and the piston 102 are matched together, the corresponding spring of the piston 102 is stretched, and the traction rope 161 is tightened on the winding roller 16; when in use, first move the support 100 to the position to be filled through the moving mechanism 1, then the rotating plate 2 is in a horizontal position under the action of the gravity block 8, because the gravity block 8 is arranged at the bottom of the rotating plate 2 and the center of the gravity block 8 and the center of gravity are on the same horizontal line as the center line of the rotating plate 2, so under the action of gravity, the gravity block 8 will vertically downward, drive the rotating plate 2 to rotate to a horizontal state, and the gravity block 8 will also drive the positioning rod 10 to rotate, at this time, the support rod 4 is inserted into the rotating plate 2, and the position of the support rod 4 inserted into the rotating plate 2 is on the center line of the rotating plate 2, the rotating plate 2 will not rotate when the support rod 4 is vertically inserted, in the process of inserting the support rod 4, the push rod 14 will push the lock rod 101 downward through the circular hole, so that the lock rod 101 rotates downward and separates from the piston 102, so that the corresponding spring of the piston 102 resets and pulls the piston 102 to move in the air cavity to the direction of the limiting block 103, the movement of the piston 102 compresses the gas between the piston 102 and the limiting block 103, so that the limiting block 103 is pushed by the gas to move to the semicircular block 11 and the semicircular ring 111 respectively, because the arc-shaped grooves on the semicircular block 11 and the semicircular ring 111 correspond to and match the limiting block 103, the limiting block 103 will cooperate with the arc-shaped grooves to limit the positioning rod 10, so that the relative position of the rotating plate 2 and the support 100 is limited by the gravity block 8, thereby avoiding the rotating plate 2 from rotating during the filling operation, thereby affecting the measurement of the corresponding filling amount by the electronic scale 25, in addition, when the push rod 14 pushes the lock rod 101 to the air cavity side wall and cannot be pushed, as the support rod 4 continues to be inserted, the push rod 14 moves upward relative to the support rod 4, so that the push block 13 moves upward, so that the limiting column 131 is squeezed to move to both sides, the corresponding spring of the limiting column 131 is compressed, and the limiting column 131 moves to the side wall of the rotating plate 2, so that the relative position of the support rod 4 and the rotating plate 2 is limited, thereby avoiding the support rod 4 from falling off during use, facilitating the use of personnel, and when the end of the support rod 4 is inserted into the rotating plate 2, it will also roll and frictionally cooperate with the transmission wheel 15 to drive the transmission wheel 15 to rotate, the transmission wheel 15 rotates to drive the winding roller 16 to rotate through the transmission belt, and the winding roller 16 rotates to spread the traction rope 161, and the length of the spread traction rope 161 is equal to the distance that the piston 102 is pulled by the corresponding spring.When the next filling operation is carried out, the pull rod 12 is pulled by the pull ring, the push block 13 is moved upward under the action of the pull rod 12, and the corresponding spring of the push block 13 is forced to contract. The limiting column 131 is in contact with the push block 13 and slides away from the rotating plate 2 under the action of the corresponding spring reset push force, and the push rod 14 is separated from the lock rod 101 under the action of the push block 13. The lock rod 101 is reset to the horizontal state under the action of the tension spring. At this time, the limiting of the rotating plate 2 and the supporting rod 4 is released, the supporting rod 4 is pulled out together with the filling assembly 5, the supporting rod 4 is separated from the rotating plate 2, the transmission wheel 15 is reversed, the transmission wheel 15 is rotated through the transmission belt to make the winding roller 16 reverse, the winding roller 16 is reversed to tighten the traction rope 161, the traction rope 161 is tightened to drive the piston 102 to move in the direction of the lock rod 101. Since the contact sliding point of the lock rod 101 and the piston 102 is relatively inclined, under the action of the traction rope 161, the lock rod 101 and the piston 102 will be in the initial state of engagement, and the corresponding spring of the piston 102 will be stretched. Since the piston 102 moves in the direction of the lock rod 101, a negative pressure is generated in the air cavity to make the limiting block 103 separate from the arc-shaped groove and shrink in the positioning rod 10. The relative limiting of the rotating plate 2 and the bracket 100 is released, and then when the rotating plate 2 is rotated to the horizontal state and is stable, the supporting rod 4 together with the filling assembly 5 can be inserted into the rotating plate 2 to perform the filling operation.

Claims

1. A refrigerant charging device, comprising a moving mechanism and a charging assembly, wherein a support is provided on the top of the moving mechanism; characterized in that: The bracket is embedded with a rotating plate, and a support rod is inserted and fitted on the rotating plate. A fixing frame is provided around the support rod, and a clamping component for positioning and fixing the filling component is provided inside the fixing frame. A sliding groove is provided on one side of the bottom of the support rod, and an extension plate is slidably arranged in the sliding groove. A mating component is provided between the extension plate and the clamping component. When the filling component is placed on the extension plate, the extension plate moves downward and drives the clamping component to move relative to it through the mating component, so as to complete the clamping and positioning of the filling component. The clamping assembly includes a first clamping plate and a second clamping plate. The two ends of the first clamping plate and the second clamping plate are slidably connected to the fixed frame. A first pull rope is connected between one end side wall of the second clamping plate and the center side wall of the first clamping plate. A second pull rope is connected to one end side wall of the first clamping plate. The end of the second pull rope away from the first clamping plate is fixed to the mating assembly. The mating assembly includes a base slidably disposed in a groove, an end of the second pull rope being fixedly connected to the top of the base, and a magnet being fixedly disposed on the top of the extension plate to attract and engage with the base. Both the first clamping plate and the second clamping plate are rotatably equipped with rollers on one side relative to the filling assembly.

2. The refrigerant charging device according to claim 1, characterized in that, The base is elastically provided with a plug rod, and a trigger block is provided between two sets of plug rods. Positioning holes that are adapted to slide the plug rod are arranged in an array on both sides of the sliding groove.

3. The refrigerant charging device according to claim 1, characterized in that, The rotating plate is rotatably connected to the support on both sides via a rotating shaft. An electronic scale is installed on the top of the rotating plate away from the support rod. A gravity block is fixedly installed at the bottom of the rotating plate, and a positioning rod is fixedly installed on one side of the gravity block. A limiting mechanism is provided inside the positioning rod. A corresponding and compatible locking piece is fixedly installed at the bottom of the support. A driving mechanism is provided at the bottom end of the connection between the support rod and the rotating plate. When the support rod and the rotating plate are fitted and inserted, the driving mechanism drives the limiting mechanism to cooperate with the locking piece, so as to lock the horizontal position of the rotating plate through the positioning rod and the gravity block.

4. A refrigerant charging device according to claim 3, characterized in that, The limiting mechanism includes a locking rod and a limiting block. The positioning rod has an air cavity inside. The limiting block is slidably embedded in the end of the air cavity. The locking rod is rotatably connected to the end of the air cavity near the gravity block. A piston is also slidably arranged in the air cavity. The piston is engaged with the locking rod. The locking component includes a semicircular block and a semicircular ring. The semicircular block and the semicircular ring have arc-shaped grooves on their opposite sidewalls that are adapted to the limiting block.

5. A refrigerant charging device according to claim 4, characterized in that, The driving mechanism includes a push block and a push rod; the push block is slidably embedded in one end of the connection between the support rod and the rotating plate, the top end of the push rod is fixedly connected to the bottom of the push block, the top of the push block is fixedly connected to a pull rod, and the end of the push rod away from the push block slides through the side wall of the support rod and cooperates with the limiting mechanism.

6. A refrigerant charging device according to claim 5, characterized in that, Limiting posts are slidably embedded on both sides of the end of the connection between the support rod and the rotating plate. A transmission mechanism is provided at the connection between the rotating plate and the support rod. The transmission mechanism includes a transmission wheel and a winding roller. The transmission wheel is rotatably connected at the connection between the rotating plate and the support rod. The transmission wheel is connected to the winding roller. A traction rope is wound on the winding roller. The transmission wheel and the side wall of the support rod are in rolling friction engagement. The end of the traction rope away from the winding roller is fixedly connected to the piston.

7. A charging method for a refrigerant charging device as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Move the entire device to the vicinity of the filling device using the moving mechanism; S2. Start the vacuum pump to complete the vacuuming operation of the device to be filled; S3. Remove the support rod from the rotating plate. Under the gravity of the weight block, the rotating plate will automatically rotate to a horizontal position, thus placing the electronic scale in a horizontal working position. S4. Insert the support rod vertically into the rotating plate. The driving mechanism at the bottom of the support rod triggers the limiting mechanism inside the positioning rod, locking it with the clip at the bottom of the bracket, thereby fixing the rotating plate in a horizontal state and ensuring the stability of the filling process. S5. Place the filling assembly's tank into the fixing frame, so that its bottom presses against the extension plate; S6. Connect the valve of the filling component to the equipment to be filled through the connecting pipe, open the valve to start filling. During the filling process, the electronic scale monitors the decrease in the weight of the tank in real time. When the weight reduction reaches the preset filling amount, close the valve to complete the filling.

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