Automatic water adding device for rockfill material for dam face construction

Abstract

The invention relates to the technical field of rockfill material water adding devices, in particular to an automatic rockfill material water adding device for dam face construction, which comprises a plurality of vertical columns, butt joint rods, connecting rods, a water adding mechanism, a transmission mechanism and a limit adjusting mechanism, the plurality of vertical columns are vertically fixed, and the butt joint rods are fixed between the front and back adjacent vertical columns; the butt joint rods and the stand columns are combined to form a set of supporting structures, the two sets of supporting structures are symmetrically arranged, connecting rods are fixed between the stand columns on the front sides and the rear sides of the two sets of supporting structures and used for conducting water adding operation on rockfill materials, the whole water adding mechanism is located at the tops of the stand columns, and the transmission mechanism is arranged on one side of the base. According to the water adding device for the rockfill materials in the boxcar, the linkage seat can drive the water adding spray head to slide on the base through the arrangement of the transmission mechanism while water is added, and uniform water adding operation is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of rockfill water adding devices, and in particular to an automatic rockfill water adding device for dam surface construction. Background Art

[0002] In the current dam construction process, adding water to the rockfill is an important process that directly affects the construction quality and project progress. The traditional water adding method mostly relies on manual operation, which is not only inefficient, but also easily causes uneven water volume, which in turn affects the construction quality. In recent years, with the development of automation technology, some automated water adding equipment has begun to be introduced to the construction site, which has improved construction efficiency and accuracy, but there are still many shortcomings.

[0003] Currently, there are two main types of watering equipment commonly used for rockfill materials: one is a watering device based on a vehicle-mounted spraying system, which uses a water pump to transport water from the water tank to the nozzle, and then the nozzle sprays it onto the surface of the rockfill. The advantages of this equipment are simple structure and easy maintenance, but the spraying range is limited, and it is difficult to ensure uniform watering; the other is a watering device based on pipeline water supply, which brings water to the construction site by laying pipelines and then sprays it evenly through multiple nozzles. Although this equipment has a wide spraying range, it is complex to install and has high maintenance costs. In addition, neither of these two devices has an integrated weighing function, and the water addition volume cannot be monitored in real time, resulting in inaccurate water addition.

[0004] In summary, existing rockfill watering equipment generally has problems such as uneven watering, low efficiency, and high maintenance cost. Especially in dam construction, the amount of water added to the rockfill needs to be precisely controlled, otherwise it will affect the construction quality and engineering safety. Therefore, it is particularly important to develop an automatic watering device for rockfill materials for dam surface construction. Summary of the Invention

[0005] In order to solve the problems commonly encountered in existing rockfill water adding equipment, such as uneven water addition, low efficiency, high maintenance cost, and inability to accurately control the amount of water added, the present application provides an automatic rockfill water adding device for dam surface construction.

[0006] The present application provides an automatic water-adding device for rockfill materials used in dam surface construction, which adopts the following technical solution: An automatic water-adding device for rockfill materials used in dam surface construction, comprising: A plurality of upright posts are fixed vertically, and a docking rod is fixed between two adjacent upright posts in front and behind. The docking rod and the upright posts form a set of supporting structures, and two sets are symmetrically arranged, and a connecting rod is fixed between the upright posts on the front and rear sides of the two sets of supporting structures; Water adding mechanism, which is used for carrying out water adding operation on the rockfill materials, and the whole water adding mechanism is located at the top of the column. The water adding mechanism includes a base, a screw rod, a linkage seat, a water adding nozzle and a water adding pipe. The base is fixed between two adjacent connecting rods. The screw rod is slidably and rotatably connected to the base. The linkage seat is slidably connected to the base, and a threaded hole is provided through the linkage seat, and the screw rod is in threaded fit with the threaded hole of the linkage seat. The water adding nozzle is connected to one end of the linkage seat. One end of the water adding pipe is connected to the water adding nozzle, and the other end is connected to an external diversion device; Transmission mechanism, which is used for driving the screw rod, and the transmission mechanism is arranged on one side of the base; Limit adjusting mechanism, which is used for limiting the screw rod and is arranged on the other side of the base.

[0007] By adopting the above technical solution, with the setting of the water adding mechanism and through the diversion of the diversion pipe, and then the water flow is ejected through the water adding nozzle, so as to realize the water adding operation on the rockfill materials in the freight car compartment. And during the water adding process, with the setting of the transmission mechanism, the servo motor drives the driving bevel gear to rotate, and then the driving bevel gear drives the driven bevel gear to engage and link, and through the linkage rod and the passive rod to engage, and then drives the passive rod and the screw rod to rotate, so that the linkage seat is in threaded linkage on the screw rod, and then the linkage seat can drive the water adding nozzle to slide on the base, realizing uniform water adding operation; With the setting of the limit adjusting mechanism, when the linkage seat slides to both ends of the base, it can synchronously drive the whole screw rod to slide under the drive of the reverse acting force, and then the passive rod can engage with the linkage rod at another position, and then the screw rod can rotate in the reverse direction, so that the linkage seat can slide in the reverse direction on the base, and so on, realizing the automation of the rockfill material water adding, ensuring uniform water adding and improving the work efficiency.

[0008] Optionally, the transmission mechanism includes a fixed seat, a driven bevel gear, a linkage rod and a passive rod. The fixed seat is fixed on one side of the base and has a U-shaped structure. The driven bevel gear is rotatably connected to the inner wall of the fixed seat. The screw rod passes through the fixed seat and the axis of the driven bevel gear, and is slidably and rotatably connected to the fixed seat and the driven bevel gear. The linkage rod is coaxially fixed on the driven bevel gear, and the passive rod is coaxially fixed on the screw rod.

[0009] By adopting the above technical solution, the passive rod rotates synchronously with the linkage rod, and then the screw rod can rotate synchronously with the driven bevel gear.

[0010] Optionally, the driven bevel gear and the linkage rod are symmetrically arranged in two groups in the fixed seat, the passive rod is located between two adjacent linkage rods, and tooth groove structures are provided at both ends of the passive rod and at one end of the linkage rod close to the passive rod.

[0011] By adopting the above technical solution, the tooth-groove structures are engaged with each other, so that the passive rod can rotate synchronously with the linkage rod.

[0012] Optionally, the transmission mechanism also includes a servo motor and a driving bevel gear, the servo motor is fixed on the side wall of the fixed seat and is connected to an external electronic control device through a wire, the driving bevel gear is coaxially fixed on the output shaft of the servo motor, and the driving bevel gear is meshed with the driven bevel gear.

[0013] By adopting the above technical solution, the servo motor is used to drive the driving bevel gear to rotate, and then the driving bevel gear drives the driven bevel gear to engage and link.

[0014] Optionally, the limit adjustment mechanism includes a limit seat, a limit rod, a limit groove, an installation groove and an abutment rod. The limit seat is fixed on the base, and a notch is provided on the limit seat. The limit rod is coaxially fixed to one end of the screw rod, and the limit rod slides and rotates to be engaged in the notch of the limit seat. The limit groove is provided on the outer wall of the limit rod, and the installation groove is provided at the top of the limit seat. The abutment rod slides and is engaged in the installation groove, and one end of the abutment rod slides and abuts against the limit groove.

[0015] By adopting the above technical solution, the abutment rod is connected to the limiting groove, thereby realizing the limiting effect on the limiting rod, and then synchronously limiting the position of the screw rod.

[0016] Optionally, the limit adjustment mechanism also includes a chuck and a pressure spring, the chuck is coaxially fixed on the abutment rod, the pressure spring is sleeved on the abutment rod, and one end of the pressure spring abuts against the chuck, and the other end abuts against the inner wall of the mounting groove.

[0017] By adopting the above technical solution, the elastic force of the pressure spring is utilized to enable one end of the abutting rod to firmly abut against the limiting groove.

[0018] Optionally, two limiting grooves are arranged in parallel on the limiting rod, and an abutment bead is rotatably connected to one end of the abutment rod close to the limiting rod.

[0019] By adopting the above technical solution, the wear between the abutment rod and the limiting rod is reduced by utilizing the rotation of the abutment bead.

[0020] Optionally, a guide tube is fixed on the linkage seat, and a thread is provided on the outer wall of the guide tube. The water adding nozzle and the water adding tube are both provided with screw holes, and are screwed and connected to the guide tube through the screw holes.

[0021] By adopting the above technical solution, the water adding nozzle and the water adding pipe can be quickly disassembled and assembled by utilizing the guide pipe.

[0022] Optionally, the bottom of the linkage seat is embedded and rotatably connected with a ball, and a plurality of the balls are arranged in an array and are in rolling contact with the base.

[0023] By adopting the above technical solution, the friction resistance between the linkage seat and the base is reduced by using the balls.

[0024] Optionally, a guide rod is fixed on the base, the guide rod is located on one side of the screw rod, and one end of the linkage seat is slidingly connected to the guide rod, and buffer springs are symmetrically arranged at both ends of the guide rod, and a weighing platform is provided at the bottom of the rectangular frame composed of the column, the docking rod and the connecting rod, and the weighing platform is connected to an external electronic control device.

[0025] By adopting the above technical solution, the guide rod is used to limit and guide the linkage seat, and the buffer spring is used to ensure that the linkage seat can be buffered to a certain extent when moving to the two ends of the guide rod. The weighing platform is used to weigh the rock pile, thereby achieving accurate addition of water.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By utilizing the water adding mechanism and guiding the water through the guide pipe, the water is sprayed out through the water adding nozzle to achieve the water adding operation for the rock pile in the truck compartment. At the same time, the transmission mechanism is configured to enable the servo motor to drive the driving bevel gear to rotate, which in turn drives the driven bevel gear to engage and link. The linkage rod engages with the passive rod, thereby driving the passive rod and the screw rod to rotate, causing the linkage seat to be threaded on the screw rod, and then the linkage seat can drive the water adding nozzle to slide on the base, achieving uniform water adding operation. 2. By using the limit adjustment mechanism, when the linkage seat slides to both ends of the base, it can synchronously drive the screw rod to slide as a whole under the drive of the reverse force, thereby enabling the passive rod to engage with the linkage rod at another position, thereby enabling the screw rod to rotate in the opposite direction, allowing the linkage seat to slide in the opposite direction on the base. This reciprocating process realizes the automation of watering the rockfill, ensures uniform watering, and improves work efficiency. 3. Use the weighing platform to weigh the rockfill materials, thereby achieving accurate addition of water. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the external structure of an automatic water-adding device for rockfill materials used in dam surface construction in this embodiment.

[0028] Figure 2 Schematic diagram of the water adding mechanism in this embodiment.

[0029] Figure 3 Schematic diagram of the transmission mechanism structure in this embodiment.

[0030] Figure 4 Schematic diagram of the limit adjustment mechanism structure in this embodiment.

[0031] Figure 5 Schematic diagram of the passive rod connection structure in this embodiment.

[0032] Figure 6 Schematic diagram of the linkage seat and its overall connection structure in this embodiment.

[0033] Figure 7 Schematic diagram of the connection structure of the abutment rod in this embodiment.

[0034] Description of reference numerals: 1. Column; 2. Docking rod; 3. Connecting rod; 4. Water adding mechanism; 41. Base; 42. Screw; 43. Linkage seat; 44. Water adding nozzle; 45. Water adding pipe; 5. Transmission mechanism; 51. Fixed seat; 52. Driven bevel gear; 53. Linkage rod; 54. Passive rod; 55. Servo motor; 56. Driving bevel gear; 6. Limit adjustment mechanism; 61. Limit seat; 62. Limit rod; 63. Limit groove; 64. Mounting groove; 65. Abutment rod; 66. Chuck; 67. Pressure spring; 68. Abutment bead; 7. Guide tube; 8. Ball; 9. Guide rod; 10. Buffer spring; 11. Weighing platform. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The embodiment of the present application discloses an automatic water adding device for rockfill materials used in dam surface construction.

[0037] It should be noted that, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Reference Figure 1 and Figure 2 An automatic water-adding device for rockfill materials used in dam surface construction includes a column 1, a docking rod 2, a connecting rod 3, a water-adding mechanism 4, a transmission mechanism 5, and a limit adjustment mechanism 6. Several columns 1 are vertically fixed, and a docking rod 2 is fixed between two adjacent columns 1 in front and behind. The docking rod 2 and the column 1 form a set of supporting structures, and two groups are symmetrically arranged. Connecting rods 3 are fixed between the columns 1 on the front and rear sides of the two groups of supporting structures, which are used to add water to the rockfill materials. The water-adding mechanism 4 is located as a whole at the top of the column 1, the transmission mechanism 5 is arranged on one side of the base 41, and the limit adjustment mechanism 6 for limiting the position of the screw rod 42 is arranged on the other side of the base 41.

[0039] Regarding the water adding mechanism 4 in the embodiment of the present application, the water adding mechanism 4 includes a base 41, a screw 42, a linkage seat 43, a water adding nozzle 44 and a water adding pipe 45. The setting of the water adding mechanism 4 is utilized, and the water is diverted through the guide pipe 7, and then the water flow is sprayed out through the water adding nozzle 44 to realize the water adding operation for the piled rock materials in the truck compartment. At the same time of adding water, the setting of the transmission mechanism 5 is utilized to make the servo motor 55 drive the active bevel gear 56 to rotate, and then drive the driven bevel gear 52 to engage and link through the active bevel gear 56, and engage with the passive rod 54 through the linkage rod 53, and then drive the passive rod 54 and the screw 42 to rotate, so that the linkage seat 43 is threadedly linked on the screw 42, and then the linkage seat 43 can drive the water adding nozzle 44 to slide on the base 41, thereby realizing uniform water adding operation.

[0040] Specifically, the base 41 is fixed between two adjacent connecting rods 3, the screw rod 42 is slidably and rotatably connected to the base 41, the linkage seat 43 is slidably connected to the base 41, and a screw hole is provided through the linkage seat 43, and the screw rod 42 is threadedly engaged in the screw hole of the linkage seat 43, the water adding nozzle 44 is connected to one end of the linkage seat 43, one end of the water adding pipe 45 is connected to the water adding nozzle 44, and the other end is connected to the external diversion equipment.

[0041] Reference Figure 3 Specifically, in the embodiment of the present application, regarding the transmission mechanism 5, the transmission mechanism 5 includes a fixed seat 51, a driven bevel gear 52, a linkage rod 53, a passive rod 54, a servo motor 55 and a driving bevel gear 56. The setting of the transmission mechanism 5 enables the driving bevel gear 56 to drive the two driven bevel gears 52 to rotate synchronously in the opposite direction, and at the same time, it is connected with the linkage rod 53 at different positions through the passive rod 54, so that the screw rod 42 can rotate in the forward and reverse directions, thereby driving the linkage seat 43 to slide back and forth on the base 41.

[0042] In the embodiment of the present application, the fixed seat 51 is fixed on one side of the base 41 and has a U-shaped structure. The driven bevel gear 52 is rotatably connected to the inner wall of the fixed seat 51. The screw rod 42 passes through the axles of the fixed seat 51 and the driven bevel gear 52, and is slidably and rotatably connected to the fixed seat 51 and the driven bevel gear 52. The linkage rod 53 is coaxially fixed on the driven bevel gear 52, and the passive rod 54 is coaxially fixed on the screw rod 42. There are two groups of the driven bevel gear 52 and the linkage rod 53 symmetrically arranged in the fixed seat 51. The passive rod 54 is located between two adjacent linkage rods 53, and tooth groove structures are provided at both ends of the passive rod 54 and at one end of the linkage rod 53 close to the passive rod 54. The servo motor 55 is fixed on the side wall of the fixed seat 51 and is connected to an external electronic control device through a wire. The driving bevel gear 56 is coaxially fixed on the output shaft of the servo motor 55, and the driving bevel gear 56 meshes with the driven bevel gear 52.

[0043] Referring to Figure 4 , specifically, in the embodiment of the present application, regarding the limit adjustment mechanism 6, the limit adjustment mechanism 6 includes a limit seat 61, a limit rod 62, a limit groove 63, a mounting groove 64 and an abutting rod 65. By using the setting of the limit adjustment mechanism 6, when the linkage seat 43 slides to both ends of the base 41, it can synchronously drive the entire screw rod 42 to slide under the drive of the reverse force, so that the passive rod 54 can mesh with the linkage rod 53 at another position, and then the screw rod 42 can rotate in the reverse direction, enabling the linkage seat 43 to slide reversely on the base 41. Repeating this process realizes the automation of adding water to the rockfill, ensures uniform water addition, and improves work efficiency.

[0044] The limit seat 61 is fixed on the base 41, and a notch is provided on the limit seat 61. The limit rod 62 is coaxially fixed at one end of the screw rod 42, and the limit rod 62 is slidably and rotationally clamped in the notch of the limit seat 61. The limit groove 63 is provided on the outer wall of the limit rod 62, the mounting groove 64 is provided on the top of the limit seat 61, and the abutting rod 65 is slidably clamped in the mounting groove 64, and one end of the abutting rod 65 slidably abuts in the limit groove 63.

[0045] Referring to Figure 5 and Figure 6 , in the embodiment of the present application, a diversion pipe 7 is fixed on the linkage seat 43, and threads are provided on the outer wall of the diversion pipe 7. Threaded holes are provided on both the water adding nozzle 44 and the water adding pipe 45, and they are screwed and connected to the diversion pipe 7 through the threaded holes. The diversion pipe 7 enables the water adding nozzle 44 and the water adding pipe 45 to be quickly disassembled and assembled.

[0046] Referring to Figure 7Specifically, regarding the limit adjustment mechanism 6, the limit adjustment mechanism 6 also includes a chuck 66, a pressure spring 67 and an abutment bead 68. The elastic force of the pressure spring 67 is used to enable one end of the abutment rod 65 to firmly abut in the limit groove 63, and the rotation of the abutment bead 68 is used to reduce the wear between the abutment rod 65 and the limit rod 62.

[0047] The chuck 66 is coaxially fixed on the abutment rod 65, and the pressure spring 67 is sleeved on the abutment rod 65, and one end of the pressure spring 67 abuts against the chuck 66, and the other end abuts against the inner wall of the mounting groove 64. There are two limiting grooves 63 arranged in parallel on the limiting rod 62, and an abutment bead 68 is rotatably connected to the end of the abutment rod 65 close to the limiting rod 62.

[0048] A guide rod 9 is fixed on the base 41, and the guide rod 9 is located on one side of the screw rod 42. One end of the linkage seat 43 is slidingly connected to the guide rod 9, and buffer springs 10 are symmetrically arranged at both ends of the guide rod 9. The bottom of the linkage seat 43 is embedded and rotatably connected with balls 8. Several balls 8 are arranged in an array and roll against the base 41. The guide rod 9 is used to limit and guide the linkage seat 43, and the buffer springs 10 enable the linkage seat 43 to be buffered to a certain extent when it moves to the two ends of the guide rod 9, and the balls 8 are used to reduce the friction resistance between the linkage seat 43 and the base 41.

[0049] A weighing platform 11 is provided at the bottom of the rectangular frame composed of the columns 1, the docking rods 2 and the connecting rods 3. The weighing platform 11 is connected to an external electronic control device. The weighing platform 11 is used to weigh the rockfill materials, thereby achieving accurate addition of water.

[0050] The implementation principle of the automatic water-adding device for rock-fill materials used in dam surface construction according to the embodiment of the present application is as follows: first, a truck loaded with rock-fill materials is moved onto the weighing platform 11, and then water is diverted through the diversion pipe 7, and then water is sprayed out through the water-adding nozzle 44 to add water. When adding water, the servo motor 55 drives the active bevel gear 56 to rotate, and then drives the driven bevel gear 52 to engage and link through the active bevel gear 56, and engages with the passive rod 54 through the linkage rod 53, thereby driving the passive rod 54 and the screw rod 42 to rotate, so that the linkage seat 43 is threaded on the screw rod 42, thereby causing the linkage to rotate. The movable seat 43 can drive the water adding nozzle 44 to slide on the base 41. When the linkage seat 43 slides to both ends of the base 41, it is driven by the reverse force to synchronously drive the screw rod 42 to slide as a whole, so that the passive rod 54 can engage with the linkage rod 53 at another position, thereby causing the screw rod 42 to rotate in the opposite direction, causing the linkage seat 43 to slide in the opposite direction on the base 41. This reciprocating process realizes the automation of watering the rockfill material, ensures uniform watering, improves work efficiency, and utilizes the weighing platform 11 to weigh the rockfill material, thereby achieving accurate water addition.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An automatic water adding device for rockfill materials used in dam surface construction, characterized in that: Including: Vertical columns (1), several of which are vertically fixed, and a docking rod (2) is fixed between two adjacent front and rear vertical columns (1). The docking rod (2) and the vertical column (1) form a set of support structures, and two sets are symmetrically arranged. Connecting rods (3) are fixed between the vertical columns (1) on the front and rear sides of the two sets of support structures; A water adding mechanism (4) for performing a water adding operation on the rockfill material. The water adding mechanism (4) is entirely located at the top of the vertical column (1). The water adding mechanism (4) includes a base (41), a lead screw (42), a linkage seat (43), a water adding nozzle (44), and a water adding pipe (45). The base (41) is fixed between two adjacent connecting rods (3). The lead screw (42) is slidably and rotatably connected to the base (41). The linkage seat (43) is slidably connected to the base (41), and a threaded hole is provided through the linkage seat (43). The lead screw (42) is threadedly engaged with the threaded hole of the linkage seat (43). The water adding nozzle (44) is connected to one end of the linkage seat (43). One end of the water adding pipe (45) is connected to the water adding nozzle (44), and the other end is connected to an external diversion device; A transmission mechanism (5) for driving the lead screw (42), and the transmission mechanism (5) is arranged on one side of the base (41); A limit adjustment mechanism (6) for limiting the lead screw (42), and the limit adjustment mechanism (6) is arranged on the other side of the base (41).

2. The automatic water adding device for rockfill materials used in dam surface construction according to claim 1, characterized in that: The transmission mechanism (5) includes a fixed seat (51), a driven bevel gear (52), a linkage rod (53), and a passive rod (54). The fixed seat (51) is fixed on one side of the base (41) and has a U-shaped structure. The driven bevel gear (52) is rotatably connected to the inner wall of the fixed seat (51). The lead screw (42) passes through the fixed seat (51) and the axis of the driven bevel gear (52), and is slidably and rotatably connected to the fixed seat (51) and the driven bevel gear (52). The linkage rod (53) is coaxially fixed to the driven bevel gear (52), and the passive rod (54) is coaxially fixed to the lead screw (42).

3. The automatic water adding device for rockfill materials used in dam surface construction according to claim 2, characterized in that: The driven bevel gear (52) and the linkage rod (53) are symmetrically arranged in two sets in the fixed seat (51). The passive rod (54) is located between two adjacent linkage rods (53), and tooth groove structures are provided at both ends of the passive rod (54) and at one end of the linkage rod (53) close to the passive rod (54).

4. The automatic water adding device for rockfill materials used in dam surface construction according to claim 2, characterized in that: The transmission mechanism (5) further includes a servo motor (55) and a driving bevel gear (56). The servo motor (55) is fixed on the side wall of the fixed seat (51) and is connected to an external electronic control device through a wire. The driving bevel gear (56) is coaxially fixed to the output shaft of the servo motor (55), and the driving bevel gear (56) is engaged with the driven bevel gear (52).

5. The automatic water adding device for rockfill materials used in dam surface construction according to claim 1, characterized in that: The limit adjustment mechanism (6) comprises a limit seat (61), a limit rod (62), a limit groove (63), a mounting groove (64) and an abutment rod (65); the limit seat (61) is fixed on the base (41), and a notch is provided on the limit seat (61); the limit rod (62) is coaxially fixed to one end of the screw rod (42), and the limit rod (62) is slidably and rotatably engaged in the notch of the limit seat (61); the limit groove (63) is provided on the outer wall of the limit rod (62), and the mounting groove (64) is provided at the top of the limit seat (61); the abutment rod (65) is slidably engaged in the mounting groove (64), and one end of the abutment rod (65) is slidably engaged in the limit groove (63).

6. The automatic water adding device for rockfill materials used in dam surface construction according to claim 5, characterized in that: The limit adjustment mechanism (6) further comprises a chuck (66) and a pressure spring (67), wherein the chuck (66) is coaxially fixed on the abutment rod (65), and the pressure spring (67) is sleeved on the abutment rod (65), and one end of the pressure spring (67) abuts against the chuck (66), and the other end abuts against the inner wall of the mounting groove (64).

7. The automatic water adding device for rockfill materials used in dam surface construction according to claim 5, characterized in that: Two limiting grooves (63) are arranged in parallel on the limiting rod (62), and an abutment bead (68) is rotatably connected to one end of the abutment rod (65) close to the limiting rod (62).

8. The automatic water adding device for rockfill materials used in dam surface construction according to claim 1, characterized in that: A flow guide tube (7) is fixed on the linkage seat (43), and a thread is provided on the outer wall of the flow guide tube (7). The water adding nozzle (44) and the water adding tube (45) are both provided with screw holes, and are both screwed and connected to the flow guide tube (7) through the screw holes.

9. The automatic water adding device for rockfill materials used in dam surface construction according to claim 1, characterized in that: The bottom of the linkage seat (43) is embedded and rotatably connected with a ball (8), and a plurality of the ball (8) are arranged in an array and are in rolling contact with the base (41).

10. The automatic water adding device for rockfill materials used in dam surface construction according to claim 1, characterized in that: A guide rod (9) is fixed on the base (41), the guide rod (9) is located on one side of the screw rod (42), one end of the linkage seat (43) is slidably connected to the guide rod (9), and buffer springs (10) are symmetrically arranged at both ends of the guide rod (9). A weighing platform (11) is arranged at the bottom of a rectangular frame composed of the column (1), the docking rod (2) and the connecting rod (3), and the weighing platform (11) is connected to an external electric control device.

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