Adjustable plant spacing precision seed metering device for broad beans

Abstract

This utility model relates to the field of agricultural planting technology, specifically an adjustable plant spacing precision seed metering device for broad beans. It includes a frame, which comprises a pair of movable frames, a fixed frame, and a pair of side seats. Several seed metering mechanisms are fixed within the fixed frame. Each seed metering mechanism includes a storage hopper and a rotating column. A plant spacing adjustment mechanism is connected to the bottom of each seed metering mechanism. The plant spacing adjustment mechanism includes a rotating sleeve, an inner sleeve, an outer sleeve, a bottom tube, and a base. This adjustable plant spacing precision seed metering device for broad beans, through its plant spacing adjustment mechanism, allows the base of the plant spacing adjustment mechanism to move axially along a square rod, and the outer sleeve to move axially along the inner sleeve. By adjusting the position of the base on the square rod and the relative position of the outer sleeve and the inner sleeve, the spacing between the seed metering mechanisms corresponding to the sowing positions can be changed, achieving flexible adjustment of the sowing row spacing to adapt to the planting needs of different broad bean varieties.

Description

Technical Field

[0001] This utility model relates to the field of agricultural planting technology, specifically to a precision seed metering device for broad beans with adjustable plant spacing. Background Technology

[0002] Broad beans are an important food and cash crop, and the seed metering process significantly impacts yield. Precision seed metering avoids seed waste, while proper plant spacing promotes plant growth and improves light and nutrient utilization. With the modernization of agriculture, the requirements for the precision and adaptability of broad bean seed metering equipment are gradually increasing. Precision seed metering technology with adjustable plant spacing has become an important direction for optimizing planting methods and promoting efficient agricultural production.

[0003] Utility model patent CN222148207U discloses a broad bean planter, which includes a frame, a hole-opening mechanism, a furrow-opening mechanism, and a seed metering device. The hole-opening mechanism, furrow-opening mechanism, and seed metering device are mounted on the frame. The hole-opening mechanism includes a mounting plate, a hole-opening hammer, a connecting rod, a sliding rod, a turntable, a drive motor I, and a lifting mechanism. The two ends of the mounting plate are slidably mounted in the sliding grooves I opened on the inner wall of the frame. The middle part of the turntable is mounted on the mounting plate through a bearing and is connected to the drive motor I mounted on the mounting plate. One end of the connecting rod is hinged to the edge of the turntable, and the other end is hinged to the upper end of the sliding rod. The sliding rod is slidably mounted in a sliding sleeve set on the mounting plate, and the hole-opening hammer is mounted on the lower end of the sliding rod. The hole-opening mechanism and the furrow-opening mechanism of this broad bean planter can perform both hole-opening and row-opening of broad bean seeds. The switching between the hole-opening mechanism and the furrow-opening mechanism is convenient and the operation is simple, thus realizing two uses in one machine, increasing the application range of the planter, and improving the practicality of sowing.

[0004] The installation positions of the hole-opening mechanism, furrow-opening mechanism, and seed metering device of this broad bean planter are relatively fixed, making it impossible to flexibly adjust the distance between adjacent planting positions according to planting needs. This makes it difficult to adapt to the diverse row spacing requirements of different broad bean varieties. In view of this, we propose a precision seed metering device for broad beans with adjustable plant spacing. Utility Model Content

[0005] The purpose of this invention is to provide a precision seed metering device for broad beans with adjustable plant spacing, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable plant spacing precision seed metering device for broad beans includes a frame. The frame comprises a pair of symmetrically arranged movable frames, a fixed frame fixed above the position between the two movable frames, and a pair of side plates fixed on the left and right sides between the two movable frames. Several seed metering mechanisms are fixed within the fixed frame. Each seed metering mechanism includes a storage hopper fixedly connected to the fixed frame and a rotating column rotatably connected inside the storage hopper. A square-section discharge pipe is fixed to the bottom end of the storage hopper, and a cylindrical sleeve is fixed to the bottom end of the discharge pipe. The rotating column is laterally rotatably connected inside the discharge pipe, and several grooves are formed on the outer circumferential surface of the rotating column. The sleeve... The bottom of the device is rotatably connected to a plant spacing adjustment mechanism. The plant spacing adjustment mechanism includes a rotating sleeve sleeved inside the sleeve and rotatably connected to the sleeve, an inner sleeve hinged to the bottom end of the rotating sleeve, an outer sleeve sleeved outside the inner sleeve and movable along the axial direction of the inner sleeve, a bottom tube hinged to the end of the outer sleeve, and a sleeve seat rotatably connected to the bottom tube. A rotating shaft is rotatably connected between the rear ends of the two side seat plates. The rotating shaft passes through the rotating column and is coaxially fixedly connected to the rotating column. A rotating motor is coaxially connected to the end of the rotating shaft. A square rod is fixed between the front ends of the two side seat plates. The sleeve seat is sleeved on the square rod and can move along the axial direction of the square rod.

[0008] Preferably, rollers are installed at both ends of the mobile frame, a pair of frame rods are fixed on the mobile frame, the ends of the frame rods are fixedly connected to the fixed frame, and a traction rod is fixed on the mobile frame at the rear end, the traction rod is used to pull the frame to move;

[0009] In this setup, the rollers facilitate the movement of the mobile frame and the entire device, the support rods enhance the stability of the connection between the mobile frame and the fixed frame, and the traction rods provide traction points for the movement of the device.

[0010] Preferably, a vertical rod is fixed between the top ends of the two side seats, and a horizontal rod is fixed to the end of the vertical rod. The horizontal rod located on the rear side is fixedly connected to the fixed frame, and the horizontal rod located on the front side is fixedly connected to the movable frame located on the front side.

[0011] In this configuration, the vertical and horizontal bars work together to further reinforce the connection between the side seat plate and the fixed frame and the movable frame, thereby improving the overall structural stability.

[0012] Preferably, two convex shafts are fixed symmetrically around the rotating sleeve on the outer peripheral surface of the sleeve, and a pair of movable grooves are symmetrically formed around the sleeve on the outer peripheral surface of the sleeve, with the two convex shafts extending into the two movable grooves respectively.

[0013] In this configuration, the convex shaft engages with the movable groove to limit the rotation range of the rotating sleeve relative to the sleeve, while ensuring a stable connection between the two.

[0014] Preferably, the inner sleeve has a pair of end plates at its first end, and the bottom end of the rotating sleeve is connected to a convex tube. The bottom end of the convex tube extends between the two end plates, and a pair of hinge shafts are fixed on the outer circumferential surface of the bottom end of the convex tube. The two hinge shafts pass through the two end plates laterally and are rotatably connected to the end plates.

[0015] In this configuration, the end plate, the convex tube, and the hinge shaft work together to achieve the hinge connection between the rotating sleeve and the inner sleeve, ensuring that the two can rotate relative to each other and that the connection is stable.

[0016] Preferably, the bottom tube has a vertical tubular structure, a pair of protruding plates are fixed at the top of the bottom tube, the end of the outer tube extends between the two protruding plates, and a pair of fixed shafts are fixed on the outer end face of the end of the outer tube. The two fixed shafts pass through the two protruding plates laterally and are rotatably connected to the protruding plates.

[0017] In this configuration, the convex plate and fixed shaft work together to achieve a hinged connection between the outer tube and the bottom tube, allowing them to rotate relative to each other. The vertical bottom tube facilitates the vertical discharge of seeds.

[0018] Preferably, the sleeve has a cavity, and the sleeve is fitted onto the outside of the square rod through the cavity. A protruding post is fixed at the bottom end of the sleeve, and an end seat is fixed on the outer surface of the top of the bottom tube. The protruding post vertically penetrates the end seat and is rotatably connected to the end seat. An anti-detachment block is fixed at the bottom end of the protruding post.

[0019] In this configuration, the sleeve cavity allows the sleeve to move along the square rod, the protrusion and the end seat cooperate to achieve a rotatable connection between the sleeve and the bottom tube, and the anti-detachment block prevents the protrusion from falling off.

[0020] Preferably, the top end of the sleeve is threaded with a shank bolt, the bottom end of the shank bolt is a threaded rod, and the top end of the shank bolt is a handle. When the shank bolt is tightened, the bottom end of the threaded rod of the shank bolt abuts against the top surface of the square rod.

[0021] In this configuration, the bolt with a handle is used to secure the sleeve by abutting against the square rod, and the handle is easy to operate, preventing the sleeve from moving on its own during operation.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This adjustable plant spacing precision seed metering device for broad beans features a plant spacing adjustment mechanism. The sleeve of the plant spacing adjustment mechanism can move along the axial direction of the square rod, and the outer sleeve can move along the axial direction of the inner sleeve. By adjusting the position of the sleeve on the square rod and the relative position of the outer sleeve and the inner sleeve, the spacing of the seed metering mechanism corresponding to the sowing position can be changed, thus achieving flexible adjustment of the sowing row spacing to meet the planting needs of different broad bean varieties. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the frame structure in this utility model;

[0026] Figure 3 This is a schematic diagram of the seeding mechanism in this utility model;

[0027] Figure 4 This is an enlarged schematic diagram of point A in this utility model;

[0028] Figure 5 This is an exploded view of the plant spacing adjustment mechanism in this utility model;

[0029] Figure 6 This is a schematic diagram of the rotating sleeve in this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 100. Frame; 110. Moving frame; 111. Traction rod; 120. Fixed frame; 130. Side seat plate; 131. Rotating motor; 132. Rotating shaft; 133. Square rod;

[0032] 200. Seed dispensing mechanism; 210. Storage hopper; 211. Dispensing pipe; 212. Sleeve; 213. Movable trough; 220. Rotating column; 221. Groove;

[0033] 300. Plant spacing adjustment mechanism; 310. Rotating sleeve; 311. Convex tube; 312. Convex shaft; 313. Hinge shaft; 320. Inner sleeve; 330. Outer sleeve; 340. Bottom tube; 341. End seat; 350. Sleeve seat; 351. Convex column; 352. Bolt with handle. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Example 1

[0036] Please see Figures 1-4An adjustable plant spacing broad bean precision seed metering device includes a frame 100. The frame 100 includes a pair of symmetrically distributed movable frames 110, a fixed frame 120 fixed above the position between the two movable frames 110, and a pair of side seats 130 fixed on the left and right sides between the two movable frames 110. The movable frames 110 provide a supporting foundation for the overall structure. The rollers installed at both ends of the movable frames 110 can reduce the frictional resistance when the device moves, facilitating the overall movement. The frame rods can stably connect the movable frames 110 and the fixed frame 120, enhancing the structural stability. A pair of frame rods are fixed on the movable frames 110, and the ends of the frame rods are fixedly connected to the fixed frame 120. A traction rod 111 is fixed on the movable frame 110 at the rear end. The traction rod 111 can be connected to an external traction device to provide a traction point for the device to move, realizing the position transfer of the device. The traction rod 111 is used to pull the frame 100 to move. The two side seats 130 can support and position the rotating shaft 132 and the square rod 133. A vertical rod is fixed between the top ends of the two side seats 130. The vertical rod and the horizontal rod cooperate to further connect the side seats 130, the fixed frame 120 and the movable frame 110, thereby improving the stability of the overall structure. A horizontal rod is fixed to the end of the vertical rod. The horizontal rod located on the rear side is fixedly connected to the fixed frame 120, and the horizontal rod located on the front side is fixedly connected to the movable frame 110 located on the front side.

[0037] like Figure 1 and Figure 3 As shown, in this utility model, a plurality of seed dispensing mechanisms 200 are fixed in the fixed frame 120. The fixed frame 120 provides an installation carrier for the seed dispensing mechanisms 200, ensuring the stable installation of the seed dispensing mechanisms 200. The seed dispensing mechanism 200 includes a storage hopper 210 fixedly connected to the fixed frame 120 and a rotating column 220 rotatably connected inside the storage hopper 210. The storage hopper 210 can be used to store broad bean seeds to be sown, providing a seed source for seed dispensing. The rotating column 220 can achieve quantitative seed dispensing by rotating.

[0038] like Figure 3 and Figure 4As shown, specifically, a square-shaped discharge pipe 211 is fixed to the bottom end of the storage hopper 210. The discharge pipe 211 guides the seeds in the storage hopper 210 downwards, providing a channel for seed discharge. The square cross-section can cooperate with the rotating column 220 to reduce seed leakage. A cylindrical sleeve 212 is fixed to the bottom end of the discharge pipe 211. The sleeve 212 can connect the discharge pipe 211 to the subsequent plant spacing adjustment mechanism 300, providing a transition channel for seed discharge. The rotating column 220 is laterally rotatably connected inside the discharge pipe 211. Several recesses are formed on the outer circumferential surface of the rotating column 220. The groove 221 can hold broad bean seeds. As the rotating column 220 rotates, it can carry the seeds out of the discharge pipe 211 and discharge them, realizing precise seed metering. A rotating shaft 132 is rotatably connected between the rear ends of the two side seats 130. The rotating shaft 132 can transmit power and drive the rotating column 220 to rotate synchronously. The rotating shaft 132 passes through the rotating column 220 and is fixedly connected to the rotating column 220 coaxially. A rotating motor 131 is coaxially connected to the end of the rotating shaft 132. The rotating motor 131 provides power for the rotation of the rotating shaft 132, ensuring the stable rotation of the rotating column 220.

[0039] In this embodiment, the adjustable plant spacing precision seed metering device for broad beans is used as follows: First, broad bean seeds are placed in the storage hopper 210, and the seeds will move downwards into the discharge pipe 211 due to gravity. Then, the rotating motor 131 is started, which drives the rotating shaft 132 to rotate, and the rotating shaft 132 in turn drives the rotating column 220 to rotate in the discharge pipe 211. Next, the grooves 221 on the rotating column 220 will sequentially collect the seeds in the discharge pipe 211. As the rotating column 220 continues to rotate, the seeds in the grooves 221 will be carried to the bottom of the discharge pipe 211 and discharged. Finally, the device is moved by the traction rod 111 to achieve continuous seed metering operation.

[0040] Example 2

[0041] In order to adjust the row spacing of broad beans discharged from the seed dispensing mechanism at position 200, such as Figure 1 , Figure 2 and Figures 4-6As shown, a plant spacing adjustment mechanism 300 is rotatably connected to the bottom of the sleeve 212. The plant spacing adjustment mechanism 300 can change the seed discharge position by adjusting its own structure, thereby realizing the adjustment of the row spacing. The plant spacing adjustment mechanism 300 includes a rotating sleeve 310 sleeved inside the sleeve 212 and rotatably connected to the sleeve 212. The rotating sleeve 310 can rotate relative to the sleeve 212, providing a basis for the angle adjustment of the subsequent mechanism. An inner sleeve 320 is hinged to the bottom end of the rotating sleeve 310. The inner sleeve 320 is hinged to the rotating sleeve 310, which can realize the angle rotation and at the same time provide a basis for the expansion and contraction of the outer sleeve 330. A sleeve is sleeved outside the inner sleeve 320 and can move along the inner sleeve 310. The outer sleeve 330, which moves along the axial direction, and the inner sleeve 320 form a telescopic tube structure. The overall length can be changed by moving along the axial direction of the inner sleeve 320 so that after the position of the sleeve 350 is adjusted, the falling seeds can always be discharged from the seed metering mechanism 200 into the bottom tube 340 and sown. The bottom tube 340, which is hinged to the end of the outer sleeve 330, can be adjusted in angle and guide the seeds to be discharged to the designated position. The sleeve 350, which is rotatably connected to the bottom tube 340, can move along the square rod 133, thereby changing the position of the entire plant spacing adjustment mechanism 300. It is a key component for row spacing adjustment.

[0042] like Figures 4-6 As shown, in this embodiment, two convex shafts 312 are fixed symmetrically around the center of the rotating sleeve 310 on the outer peripheral surface of the rotating sleeve 310. A pair of movable grooves 213 are symmetrically opened around the center of the sleeve 212 on the outer peripheral surface of the sleeve 212. The two convex shafts 312 extend into the two movable grooves 213 respectively. The convex shafts 312 move within the movable grooves 213, which can limit the rotation range of the rotating sleeve 310 and at the same time ensure the connection stability between the rotating sleeve 310 and the sleeve 212.

[0043] like Figure 5 As shown, specifically, the inner sleeve 320 has a pair of end plates at its first end, and the bottom end of the rotating sleeve 310 is connected to a protruding tube 311. The bottom end of the protruding tube 311 extends between the two end plates, and a pair of hinge shafts 313 are fixed on the outer circumferential surface of the bottom end of the protruding tube 311. The two hinge shafts 313 pass through the two end plates laterally and are rotatably connected to the end plates. The hinge shafts 313 cooperate with the end plates to realize the hinge connection between the protruding tube 311 and the inner sleeve 320, ensuring that the two can rotate relative to each other and that the connection is stable. The bottom tube 340 has a vertical tubular structure, which ensures that the seeds fall vertically and improves the accuracy of seeding. A pair of convex plates are fixed at the top of the bottom tube 340, and the end of the outer tube 330 extends between the two convex plates. A pair of fixed shafts are fixed on the outer end face of the end of the outer tube 330. The two fixed shafts pass through the two convex plates laterally and are rotatably connected to the convex plates. The fixed shafts cooperate with the convex plates to realize the hinge between the outer tube 330 and the bottom tube 340, so that the two can rotate relative to each other and adapt to position adjustment.

[0044] like Figure 1 , Figure 2 and Figure 5 As shown, specifically, a square rod 133 is fixed between the front ends of the two side seat plates 130. The square rod 133 provides a moving track for the sleeve 350, ensuring that the sleeve 350 moves in a straight line. The sleeve 350 is sleeved on the square rod 133 and can move axially along the square rod 133. A cavity is opened inside the sleeve 350, through which the sleeve 350 is sleeved on the outside of the square rod 133. A protruding post 351 is fixed at the bottom end of the sleeve 350, and the protruding post 351 connects to the sleeve. 350 and end seat 341 are rotatably connected; end seat 341 is fixed on the outer surface of the top of the bottom tube 340, and end seat 341 provides an installation position for protrusion 351 to ensure the connection between the bottom tube 340 and the sleeve 350; protrusion 351 vertically penetrates end seat 341 and is rotatably connected to end seat 341, and anti-detachment block is fixed at the bottom end of protrusion 351 to prevent protrusion 351 from coming out of end seat 341 and ensure connection stability.

[0045] like Figure 5 As shown, further, the top of the sleeve 350 is threadedly connected to a shank bolt 352. The bottom end of the shank bolt 352 is a threaded rod, and the top end of the shank bolt 352 is a handle. When the shank bolt 352 is tightened, the bottom end of the threaded rod of the shank bolt 352 abuts against the top surface of the square rod 133. The shank bolt 352 can fix the position of the sleeve 350 by abutting against the square rod 133, preventing the sleeve 350 from moving on its own during operation and ensuring the stability after the row spacing is adjusted.

[0046] It is worth noting that the rotary motor 131 involved in this utility model is existing conventional technology, and will not be described in detail here.

[0047] In this embodiment, the adjustable plant spacing precision seed metering device for broad beans is used as follows: First, loosen the bolt with handle 352 to allow the sleeve 350 to move axially along the square rod 133. Adjust the position of the sleeve 350 on the square rod 133 according to the required row spacing. Then, the movement of the sleeve 350 will cause the bottom tube 340, outer sleeve 330, and inner sleeve 320 to move accordingly. The outer sleeve 330 will extend and retract axially along the inner sleeve 320 to adapt to position changes. Rotating the sleeve 310 will cause it to rotate relative to the sleeve 212, and the convex shaft 312 will move within the movable groove 213, with each hinge rotating accordingly. Next, after adjustment, tighten the bolt with handle 352 to fix the sleeve 350 on the square rod 133, ensuring that the falling seeds can always be metered from the seed metering mechanism 200 into the bottom tube 340. Finally, start the rotating motor 131 to drive the seed metering mechanism 200 to meter the seeds. The traction device is moved by the traction rod 111 to achieve continuous sowing operations with the required row spacing.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable row spacing chickpea precision seed metering device comprising a frame (100), characterized in that: The frame (100) includes a pair of movable frames (110) symmetrically distributed front and back, a fixed frame (120) fixed above the position between the two movable frames (110), and a pair of side seats (130) fixed on the left and right sides between the two movable frames (110). Several seed dispensing mechanisms (200) are fixed in the fixed frame (120). Each seed dispensing mechanism (200) includes a storage hopper (210) fixedly connected to the fixed frame (120) and a rotating link. A rotating column (220) is connected inside the storage hopper (210). A square-section discharge pipe (211) is fixed to the bottom end of the storage hopper (210). A cylindrical sleeve (212) is fixed to the bottom end of the discharge pipe (211). The rotating column (220) is laterally rotatably connected inside the discharge pipe (211). Several grooves (221) are formed on the outer circumferential surface of the rotating column (220). A plant spacing adjustment mechanism (300) is rotatably connected to the bottom of the sleeve (212). The plant spacing adjustment mechanism (300) includes a rotating sleeve (310) sleeved inside the sleeve (212) and rotatably connected to the sleeve (212), an inner sleeve (320) hinged to the bottom end of the rotating sleeve (310), an outer sleeve (330) sleeved outside the inner sleeve (320) and movable along the axial direction of the inner sleeve (320), a bottom tube (340) hinged to the end of the outer sleeve (330), and a sleeve seat (350) rotatably connected to the bottom tube (340). A rotating shaft (132) is rotatably connected between the rear ends of the two side seat plates (130). The rotating shaft (132) passes through the rotating column (220) and is coaxially fixedly connected to the rotating column (220). A rotating motor (131) is coaxially connected to the end of the rotating shaft (132). A square rod (133) is fixed between the front ends of the two side seat plates (130). The sleeve (350) is sleeved on the square rod (133) and can move axially along the square rod (133).

2. The adjustable spacing precision bean seed meter of claim 1, wherein: Rollers are installed at both ends of the mobile frame (110). A pair of frame rods are fixed on the mobile frame (110), and the ends of the frame rods are fixedly connected to the fixed frame (120). A traction rod (111) is fixed on the mobile frame (110) at the rear end. The traction rod (111) is used to pull the frame (100) to move.

3. The adjustable spacing precision bean seed meter of claim 1, wherein: A vertical rod is fixed between the top ends of the two side seats (130), and a horizontal rod is fixed at the end of the vertical rod. The horizontal rod located on the rear side is fixedly connected to the fixed frame (120), and the horizontal rod located on the front side is fixedly connected to the movable frame (110) located on the front side.

4. The adjustable spacing precision chickpea seed meter of claim 1, wherein: Two convex shafts (312) are fixed symmetrically around the rotating sleeve (310) on the outer peripheral surface of the sleeve (212). A pair of movable grooves (213) are opened symmetrically around the sleeve (212) on the outer peripheral surface of the sleeve (212). The two convex shafts (312) extend into the two movable grooves (213) respectively.

5. The adjustable spacing precision chickpea seed meter of claim 1, wherein: The inner sleeve (320) has a pair of end plates at its head end. The bottom end of the rotating sleeve (310) is connected to a convex tube (311). The bottom end of the convex tube (311) extends between the two end plates. A pair of hinge shafts (313) are fixed on the outer circumferential surface of the bottom end of the convex tube (311). The two hinge shafts (313) pass through the two end plates laterally and are rotatably connected to the end plates.

6. The adjustable spacing precision chickpea seed meter of claim 1, wherein: The bottom tube (340) has a vertical tubular structure. A pair of protruding plates are fixed at the top of the bottom tube (340). The end of the outer tube (330) extends between the two protruding plates. A pair of fixed shafts are fixed on the outer end face of the end of the outer tube (330). The two fixed shafts pass through the two protruding plates laterally and are rotatably connected to the protruding plates.

7. The adjustable spacing precision chickpea seed meter of claim 1, wherein: The sleeve (350) has a cavity inside, and the sleeve (350) is sleeved on the outside of the square rod (133) through the cavity. A protruding post (351) is fixed at the bottom end of the sleeve (350), and an end seat (341) is fixed on the outer surface of the top of the bottom tube (340). The protruding post (351) vertically penetrates the end seat (341) and is rotatably connected to the end seat (341). An anti-detachment block is fixed at the bottom end of the protruding post (351).

8. The adjustable spacing precision chickpea seed meter of claim 1, wherein: The top of the sleeve (350) is threaded with a shank bolt (352). The bottom end of the shank bolt (352) is a threaded rod, and the top end of the shank bolt (352) is a handle. When the shank bolt (352) is tightened, the bottom end of the threaded rod of the shank bolt (352) abuts against the top surface of the square rod (133).

Images