A rotating arm device for a coring machine

Abstract

The utility model relates to a kind of rotating arm devices of sample pick-up machine, it includes base, rotating seat is rotatably connected on the base, driving assembly and arm body are provided on the rotating seat;The driving assembly includes first driving assembly and second driving assembly;The first driving assembly rotates the rotating seat by first transmission component drive, the second driving assembly drives sample pick-up trolley to do linear movement along the arm body extension direction by second transmission component;The arm body one end is fixedly connected on the rotating seat, and the other end is fixedly connected on support.The utility model has the effect of transmission precision, structure stable.

Description

Technical Field

[0001] This utility model relates to the field of sampling machine technology, and in particular to a rotating arm device for a sampling machine. Background Technology

[0002] In grain sampling operations, the rotating arm is the core component for achieving multi-directional sampling. It must meet the requirements of precise drive coordination, stable and deformation-resistant structure, reliable transmission, and safety protection to adapt to sampling scenarios involving complex grain piles.

[0003] Existing rotary arm devices have significant drawbacks: poor coordination of the drive system, making it difficult to precisely coordinate the rotation of the rotating seat with the linear motion of the sampling carriage, resulting in sampling position deviation; insufficient rigidity of the arm body, with the long cantilever prone to deformation under load, amplifying sampling errors; and low reliability of the transmission mechanism, with chains prone to slackness and gear transmission having poor precision, affecting motion stability and failing to balance the flexibility, structural stability, and operational reliability of multi-directional sampling. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotating arm device for a sampling machine, which has the effects of precise transmission and stable structure.

[0005] The above-mentioned utility model objective is achieved through the following technical solution:

[0006] A rotating arm device for a sampler includes a base, a rotating seat rotatably connected to the base, and a drive assembly and an arm body disposed on the rotating seat;

[0007] The driving assembly includes a first driving assembly and a second driving assembly; the first driving assembly drives the rotating seat to rotate through a first transmission assembly, and the second driving assembly drives the sampling trolley to move linearly along the extension direction of the arm through a second transmission assembly.

[0008] One end of the arm is fixedly connected to the rotating base, and the other end is fixedly connected to the bracket.

[0009] Through the above technical solution, the rotating seat can rotate relative to the base, and the dual drive components realize the rotation of the rotating seat and the linear movement of the sampling trolley respectively. The two work together to meet the multi-directional sampling requirements; at the same time, the two ends of the arm are fixed to form a rigid frame, which improves the overall stability of the device.

[0010] As a further technical solution of this utility model: the first drive assembly includes a first motor and a reducer, wherein the reducer is fixedly connected to the rotating base;

[0011] The speed reducer is connected to the output end of the first motor, and the second drive assembly includes a second motor.

[0012] Through the above technical solution, the first drive component uses a motor and a reducer to output high torque to ensure stable rotation of the rotating seat; the second motor provides independent power for the movement of the trolley, the drive layout is compact, and the power distribution is adapted to different motion requirements.

[0013] As a further technical solution of this utility model: the first transmission component includes a first cylindrical gear and a second cylindrical gear that mesh with each other; the first cylindrical gear is coaxially fixedly connected to the output end of the reducer; the second cylindrical gear is fixedly connected to the base.

[0014] The above technical solution uses a first cylindrical gear (connected to the output end of the reducer) and a second cylindrical gear (fixed to the base) that mesh with each other to form a first transmission component. This component efficiently, reliably and accurately transmits and converts the rotational power of the first drive component into the rotational motion of the rotating seat relative to the base. The structure is simple and the transmission is stable.

[0015] As a further technical solution of this utility model: the second transmission component includes a driving sprocket, a driven sprocket, and a transmission chain that meshes with both to form a closed loop;

[0016] The drive sprocket is connected to the output end of the second motor.

[0017] The driven sprocket is mounted on the bracket;

[0018] The upper section of the transmission chain is threaded through the sampling trolley, and the lower section of the transmission chain is fixedly connected to the sampling trolley.

[0019] The above technical solution uses an active sprocket (connected to the second motor), a driven sprocket (mounted on the bracket), and a closed transmission chain to form the second transmission component. The upper section of the transmission chain is threaded through the trolley to provide guidance, and the lower section is fixedly connected to the trolley to provide direct traction. This achieves a long-distance, highly reliable linear reciprocating motion of the sampling trolley along the arm, effectively preventing slippage and ensuring direct power transmission.

[0020] As a further technical solution of this utility model: the arm body includes a first arm body and a second arm body arranged in parallel above and below;

[0021] The first arm is composed of two parallel first circular tubes, which are slidably connected to the sampling trolley;

[0022] The second arm consists of two parallel second circular tubes positioned above the first circular tube, used to guide and limit the sampling trolley;

[0023] The rotating base and the bracket are fixedly connected to the two ends of the first and second round tubes, respectively.

[0024] Through the above technical solution, the arm body adopts a first arm body (including the first circular tube) and a second arm body (including the second circular tube) that run parallel to each other, which significantly improves the overall rigidity and bending and torsional resistance of the arm body and ensures the stability of the long arm under load; at the same time, the upper and lower layered design provides the sampling trolley with a precise sliding track and reliable anti-sway and anti-derailment guidance.

[0025] As a further technical solution of this utility model: both the rotating seat and the bracket are provided with limiters.

[0026] By using the above technical solution, limiters are set at key positions of the rotating seat and the support, which effectively limits the rotation angle of the rotating seat and the linear travel of the sampling trolley, preventing the mechanical structure from colliding or being damaged due to overtravel, and improving the safety and reliability of the equipment operation.

[0027] As a further technical solution of this utility model, it also includes a protective cover plate, which is fixedly connected to the rotating seat and disposed above the driving assembly.

[0028] Through the above technical solution, the protective cover plate is fixedly connected to the rotating seat and covers the drive component, which can effectively block external dust, impurities, water droplets and other substances from corroding the drive component, reduce the wear and failure of the drive components, extend the service life of the drive components, and at the same time avoid operators from directly contacting the moving drive components, thus improving the operational safety of the device.

[0029] As a further technical solution of this utility model, it also includes a chain tightening device, the two ends of which are fixedly connected to the rotating seat and the bracket respectively.

[0030] Through the above technical solution, the chain tensioning device is connected to a rotating seat and a bracket at both ends, which can tension the transmission chain of the second transmission component, prevent the chain from becoming loose due to long-term use or stress, prevent problems such as chain skipping and slippage during transmission, and ensure that the chain and sprocket mesh tightly, thereby ensuring the smoothness of the linear movement of the sampling trolley and the reliability of the transmission.

[0031] In summary, this utility model has at least one of the following beneficial technical effects:

[0032] 1. This utility model discloses a rotating arm device for a sampling machine, which achieves multi-directional sampling requirements and overall structural stability of the device by rotating the rotating seat relative to the base, driving the rotating seat to rotate and the sampling trolley to move linearly by dual drive components, and fixing the two ends of the arm body to form a rigid frame.

[0033] 2. This utility model discloses a rotating arm device for a sampler, which achieves precise and efficient transmission of rotation and linear motion through the coordinated design of a first transmission component (gear meshing transmission) and a second transmission component (sprocket and chain closed transmission).

[0034] 3. This utility model discloses a rotating arm device for a sampling machine, which achieves smooth movement of the sampling trolley and long-term reliable operation of the device through an arm body (sliding fit + guide limit) composed of upper and lower parallel circular tubes and auxiliary structures such as chain tightening and protective cover plate. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the rotating arm device (including the sampling trolley) of a sampling machine according to the present invention.

[0036] Figure 2 This is a side view of the rotating arm device (including the sampling trolley) of a sampling machine according to the present invention.

[0037] Figure 3 This is a top view of the rotating arm device (including the sampling trolley) of a sampling machine according to the present invention.

[0038] Reference numerals: 1. Base; 2. Rotary seat; 3. Drive assembly; 31. First drive assembly; 311. First motor; 312. Reducer; 32. First drive assembly; 321. Second motor; 4. Arm body; 41. First arm body; 411. First round tube; 42. Second arm body; 421. Second round tube; 5. First transmission assembly; 51. First cylindrical gear; 52. Second cylindrical gear; 6. Second transmission assembly; 61. Drive sprocket; 62. Driven sprocket; 63. Transmission chain; 7. Bracket; 8. Limiter; 9. Protective cover; 10. Chain tightening device; 11. Sampling trolley; 12. Screw. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] Example 1:

[0043] Reference Figure 1 The present invention discloses a rotating arm device for a sampling machine, comprising a base 1, a rotating seat 2 rotatably connected to the base 1 via a slewing bearing, and a drive assembly 3 and an arm body 4 integrated on the rotating seat 2.

[0044] Reference Figure 3 The drive assembly 3 is covered with a protective cover plate 9, and the edge of the protective cover plate 9 is fixedly connected to the top of the rotating seat 2 by screws.

[0045] Reference Figure 1 The drive assembly 3 includes a first drive assembly 31 and a second drive assembly 32 that are set independently: the first drive assembly 31 drives the rotating seat 2 to rotate around the base 1 through the first transmission assembly 5; the second drive assembly 32 drives the sampling trolley 11 to move linearly along the extension direction of the arm 4 through the second transmission assembly 6.

[0046] Furthermore, the first drive assembly 31 includes a first motor 311 and a reducer 312. The housing of the reducer 312 is welded and fixed to the rotating base 2, and its input end is connected to the output shaft of the first motor 311 through a coupling. The second drive assembly 32 includes a second motor 321, which is used to independently control the movement of the sampling carriage 11.

[0047] Reference Figure 1 and Figure 2The first transmission assembly 5 consists of a first cylindrical gear 51 and a second cylindrical gear 52 that mesh with each other. The second cylindrical gear 52 is fixedly sleeved on the top outer periphery of the base 1 by a locating pin, and the first cylindrical gear 51 is keyed to the output end of the reducer 312. The reducer 312 is fixedly connected to the rotating seat 2. When the first cylindrical gear 51 rotates with the output end of the reducer 312, it meshes with the fixed second cylindrical gear 52 and, constrained by the tooth surface meshing, revolves along the tooth surface of the second cylindrical gear 52, thereby driving the reducer 312 and the rotating seat 2 to rotate synchronously around the central axis of the base 1. The slewing bearing supports the load of the rotating seat 2 and the upper structure, reducing frictional resistance during rotation and ensuring smooth and stable rotation.

[0048] Reference Figure 1 and Figure 2 The second transmission assembly 6 includes a driving sprocket 61, a driven sprocket 62, and a closed-loop transmission chain 63. The driving sprocket 61 is fixed to the output shaft of the second motor 321 via a key connection and rotates synchronously with the motor output shaft. The driven sprocket 62 is mounted on the bracket 7 via a bearing seat, remaining parallel to and height-fitted with the driving sprocket 61. The transmission chain 63 is wound around and meshed between the driving sprocket 61 and the driven sprocket 62, forming a closed transmission circuit. The upper section of the transmission chain 63 passes through the guide groove of the sampling carriage 11, providing longitudinal guidance for the carriage movement through the engagement of the groove and the chain. The lower section of the transmission chain 63 is fixedly connected to the sampling carriage 11 via screws 12. One end of the two screws 12 is fastened to the chain link of the transmission chain 63, and the other end is fixedly connected to the chassis of the sampling carriage 11, forming a rigid force transmission structure. When the second motor 321 starts and drives the drive sprocket 61 to rotate, the transmission chain 63 moves cyclically along a closed-loop trajectory under the meshing constraint of the drive sprocket 61 and the driven sprocket 62. The upper section restricts the lateral displacement of the sampling carriage 11 through the guide groove, while the lower section converts the cyclic motion of the chain into traction force through the screw 12, directly driving the sampling carriage 11 to make a stable linear reciprocating motion along the extension direction of the arm body 4, ensuring efficient transmission and no slippage.

[0049] Reference Figure 1 and Figure 2 The arm body 4 adopts a double-layer design. The lower first arm body 41 is composed of two thicker first circular tubes 411. The first circular tubes 411 pass through the four sleeves of the sampling carriage 11 base and slide in contact with the inner surface of the sleeves, using the structural rigidity of the thick circular tubes to bear the load when the sampling carriage 11 moves. The upper second arm body 42 is composed of two thinner second circular tubes 421, symmetrically arranged above the left and right sides of the sampling carriage 11, forming a small gap fit with the lateral edges of the sampling carriage 11, achieving guidance and limitation by restricting the lateral swing of the sampling carriage 11. The two ends of the first circular tubes 411 and the second circular tubes 421 are respectively bolted to the rotating seat 2 and the bracket 7. In addition, refer to Figure 1 and Figure 3 Mechanical limiters 8 are installed on the edge of the rotating seat 2 and the bracket 7 to limit the rotation angle and the trolley travel.

[0050] The chain tensioning device 10 is a component used to tension the transmission chain 63. Its main body is a high-strength tensioning steel cable, with its two ends hooked to the side walls of the rotating seat 2 and the convex shafts of the support beam 7 via rings. The rings can rotate circumferentially and are arranged parallel to the transmission chain 63, ensuring that the tension force acts along the chain's transmission direction. The steel cable is equipped with multiple sliding and locking flat wire pulleys, whose surfaces are in contact with the outer links of the transmission chain 63, forming multi-point tension. Adjusting the pulley positions allows for the application of a continuous and uniform preload to the transmission chain 63. When the chain slacks, the pulleys compensate for deformation through the rigidity of the steel cable, maintaining tight engagement with the sprockets to prevent chain skipping and slippage, ensuring the sampling carriage 11 moves smoothly along the arm 4.

[0051] The working process of the rotating arm device of the sampling machine of this utility model is as follows:

[0052] When in operation, the first motor 311 is started, and the torque is increased by the reducer 312, which drives the first cylindrical gear 51 to rotate. Since the second cylindrical gear 52 is fixed to the base 1, the gear meshing action drives the rotating seat 2 and the arm 4 to rotate around the base 1 to the target position.

[0053] At the same time, the second motor 321 is started to drive the drive sprocket 61 to rotate, and the transmission chain 63 drives the sampling trolley 11 to slide along the first circular tube 411. When the trolley moves, the second circular tube 421 constrains its lateral displacement, and the upper section of the transmission chain 63 slides in the guide groove to provide auxiliary positioning.

[0054] During rotation and movement, the limiter 8 limits the deflection angle of the rotating seat 2 and the travel of the sampling trolley 11 in real time to avoid overtravel collisions; the protective cover 9 blocks dust and water droplets to protect the drive component 3; the chain tensioning device 10 continuously tensions the transmission chain 63 to ensure tight sprocket engagement and maintain stable transmission.

[0055] The implementation principle of this utility model is as follows: Functions are achieved through multi-system collaboration. The first motor 311 of the first drive assembly 31 drives the first cylindrical gear 51 to rotate via a reducer 312, meshing with the second cylindrical gear 52 fixed to the outer periphery of the base 1, thus rotating the rotating seat 2 around the base 1 and completing the orientation adjustment of the arm 4. The second motor 321 of the second drive assembly 32 is driven by a sprocket and chain. The lower section of the transmission chain 63 is connected to the chassis of the sampling carriage 11 via a screw 12, and the upper section passes through the guide groove of the sampling carriage 11, converting it into linear reciprocating motion of the carriage along the arm 4. The two ends of the arm 4 are fixed into a rigid frame. The lower, thicker diameter first circular tube 411 bears the sliding load, and the upper, thinner diameter second circular tube 421 constrains lateral sway, enhancing structural stability. A chain tightening device 10 compensates for slack, a limiter 8 controls the stroke, and a protective cover 9 prevents impurities, all working together to ensure accurate transmission and equipment durability, achieving efficient multi-directional sampling operation.

[0056] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rotating arm device for a sampling machine, comprising a base (1), characterized in that, A rotating seat (2) is rotatably connected to the base (1), and a drive assembly (3) and an arm (4) are provided on the rotating seat (2); The drive assembly (3) includes a first drive assembly (31) and a second drive assembly (32); the first drive assembly (31) drives the rotating seat (2) to rotate through the first transmission assembly (5), and the second drive assembly (32) drives the sampling trolley (11) to move linearly along the extension direction of the arm body (4) through the second transmission assembly (6); One end of the arm (4) is fixedly connected to the rotating seat (2), and the other end is fixedly connected to the bracket (7).

2. The rotating arm device of a sampler according to claim 1, characterized in that, The first drive assembly (31) includes a first motor (311) and a reducer (312). The reducer (312) is fixedly connected to the rotating base (2) and the reducer (312) is connected to the output end of the first motor (311). The second drive assembly (32) includes a second motor (321).

3. The rotating arm device of a sampler according to claim 2, characterized in that, The first transmission assembly (5) includes a first cylindrical gear (51) and a second cylindrical gear (52) that mesh with each other; the first cylindrical gear (51) is coaxially fixed to the output end of the reducer (312); the second cylindrical gear (52) is fixedly connected to the base (1).

4. The rotating arm device of a sampler according to claim 2, characterized in that, The second transmission assembly (6) includes a drive sprocket (61), a driven sprocket (62), and a transmission chain (63) that meshes with both to form a closed loop; The drive sprocket (61) is connected to the output end of the second motor (321). The driven sprocket (62) is mounted on the bracket (7); The upper section of the transmission chain (63) passes through the sampling trolley (11), and the lower section of the transmission chain (63) is fixedly connected to the sampling trolley (11).

5. The rotating arm device of a sampler according to claim 1, characterized in that, The arm body (4) includes a first arm body (41) and a second arm body (42) arranged in parallel from top to bottom; The first arm (41) is composed of two parallel first circular tubes (411), which are slidably connected to the sampling trolley (11); The second arm (42) is composed of two parallel second round tubes (421) arranged above the first round tube (411), which are used to guide and limit the sampling trolley (11); The first round tube (411) and the second round tube (421) are respectively fixedly connected to the rotating seat (2) and the bracket (7).

6. The rotating arm device of a sampler according to claim 1, characterized in that, Both the rotating seat (2) and the bracket (7) are equipped with limiters (8).

7. The rotating arm device of a sampler according to claim 1, characterized in that, It also includes a protective cover plate (9), which is fixedly connected to the rotating seat (2) and disposed above the drive assembly (3).

8. The rotating arm device of a sampler according to claim 1, characterized in that, It also includes a chain tightening device (10), the two ends of which are fixedly connected to the rotating seat (2) and the bracket (7), respectively.

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