Chain tensioning and synchronizing device for a coring machine

Abstract

This invention discloses a chain tension synchronization adjustment device for a sampler, relating to the technical field of chain tension synchronization adjustment devices. It includes a main structure comprising a bearing base and a support rod mounted on the upper surface of the bearing base. The invention utilizes a fourth spring. In the initial stage, the fourth spring adjusts the position of the synchronization gear, and the insertion plate cooperates with a rectangular slot on one side of the fixed frame to limit the synchronization gear. This, to a certain extent, prevents the chain tension from decreasing when the synchronization gear moves during operation. After prolonged operation, if the chain tension is insufficient, the slack side will continue to droop, moving the chain away from the pressing plate. Then, through the elastic potential energy of the third and second springs, the second lever returns to its original position. The telescopic rod adapts in real-time to the moving distance of the moving plate, thereby improving the synchronization tension effect of the equipment to a certain extent.

Description

Technical Field

[0001] This invention relates to the technical field of chain tension synchronization adjustment devices, and more particularly to a chain tension synchronization adjustment device for a sampler. Background Technology

[0002] Chains are generally metal links or rings, mostly used for mechanical transmission and traction. Most chains are composed of chain plates, chain pins, bushings, and other components. They are chain-shaped objects used for mechanical transmission. Chains are classified into four types according to different uses and functions: transmission chains, conveyor chains, traction chains, and special-purpose chains. The tension of the chain should be appropriate. If it is too tight, it will increase power consumption and cause the bearings to wear easily; if it is too loose, the chain will jump and derail.

[0003] Regarding chain tension adjustment, the sampling machine needs to be started and stopped frequently, rotated forward and backward, and run under different loads during operation. After a period of use, the chain will undergo plastic elongation and wear, causing the loose side of the chain to sag. When the chain is too loose, it is easy to skip teeth, break off the chain, or experience vibration during operation, which will affect the positioning accuracy of the sampling rod and even cause the sampling position to shift, resulting in a decrease in the representativeness of the sample. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current chain tension synchronization adjustment device for a sampler, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a chain tension synchronization adjustment device for a sampler, which is suitable for solving the problem that after a period of use, the chain will undergo plastic elongation and wear, resulting in the slack side of the chain sagging. When the chain is too loose, it is easy to cause tooth skipping, chain slippage, or running vibration.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a chain tension synchronization adjustment device for a sample sieving machine, the chain tension synchronization adjustment device comprising: The main structure includes a bearing base and a support rod installed on the upper surface of the bearing base. A movable rail is installed on the upper surface of the support rod, and a protective frame is slidably connected to the upper surface of the movable rail. A drive wheel is rotatably connected inside the protective frame. The support rod auxiliary structure includes a support frame fixedly connected to one side of the drive wheel and a reinforcing plate fixedly connected to one side of the support frame. An extension arm is fixedly connected to the side of the reinforcing plate away from the support frame, and an auxiliary wheel is rotatably connected to the other side of the extension arm. The tensioning synchronization structure includes a fixed frame fixedly connected to the inner surface of the support frame and a sliding groove opened on one side of the fixed frame. An insertion plate and an auxiliary sliding plate are slidably connected in the sliding groove. A movable plate is fixedly connected to one side of the auxiliary sliding plate, and the outer surface of the movable plate is slidably connected in the fixed frame.

[0008] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, an electric push rod is rotatably connected inside the protective frame, and the end of the electric push rod away from the protective frame is rotatably connected to the support frame through a load-bearing shaft.

[0009] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, the auxiliary wheel is provided with a first gear, the extension arm is fixedly connected with a connecting shaft, the outer surface of the connecting shaft is rotatably connected with an inclined support plate, the outer surface of the first gear is meshed with a chain body, and the extension arm is fixedly connected with a chain protection frame.

[0010] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, wherein: a first spring is fixedly connected inside the chain protection frame, an I-shaped block is fixedly connected to the upper surface of the first spring, a connecting block is fixedly connected to the lower surface of the I-shaped block, a first lever is rotatably connected to one side of the connecting block, a first shaft is fixedly connected inside the extension arm, the outer surface of the first shaft is rotatably connected to the first lever, and a push plate is fixedly connected to the side of the first lever away from the connecting block.

[0011] As a preferred embodiment of the chain tension synchronization adjustment device for a sampling machine described in this invention, the upper surface of the push plate is in contact with a lifting rod, the upper surface of the lifting rod is rotatably connected to one side of the inclined support plate, one side of the extension arm is fixedly connected to a mounting block, and a collection tube is provided inside the mounting block, one side of the auxiliary wheel is provided with a shaving rod, a storage frame is fixedly connected inside the extension arm, the outer surface of the lifting rod is slidably connected to the inner surface of the storage frame, and the top of the lifting rod is rotatably connected to one end of the inclined support plate through a connecting rod.

[0012] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, the drive wheel is provided with a second gear, the chain body is meshed with the outer surface of the second gear, a connecting shaft is rotatably connected to the moving plate, a synchronization gear is fixedly connected to the outer surface of the connecting shaft, inclined grooves are provided on both sides of the support frame, a protective ring is slidably connected in the inclined groove, and one end of the connecting shaft is rotatably connected in the protective ring.

[0013] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, a fourth spring is fixedly connected inside the fixed frame, one end of the fourth spring is fixedly connected to one side of the moving plate, a limit rod is fixedly connected to one end of the chain body, and both ends of the limit rod are fixedly connected to both ends of the chain body, and a sliding block is fixedly connected to one side of the moving plate.

[0014] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, wherein: an L-shaped frame is fixedly connected to the lower surface of the sliding block, an insertion plate is slidably connected inside the L-shaped frame, a second spring is fixedly connected to the upper surface of the insertion plate, one end of the second spring is fixedly connected to the lower surface of the sliding block, a rectangular slot is provided on one side of the fixed frame, the lower surface of the insertion plate is adapted to the size of the rectangular slot, a pull rod is fixedly connected to the upper surface of the insertion plate, a first cooperating rod is rotatably connected to one side of the pull rod, and a telescopic rod is rotatably connected to one end of the first cooperating rod.

[0015] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, wherein: a second lever is fixedly connected to one end of the telescopic rod, a fixed shaft is fixedly connected to the inner surface of the support frame, the inner surface of the second lever is rotatably connected to the outer surface of the fixed shaft, and an upper protective rod and a lower protective rod are fixedly connected to the upper surface of the chain protection frame respectively.

[0016] As a preferred embodiment of the chain tension synchronization adjustment device for a sampler described in this invention, the inner surface of the chain protection frame is fixedly connected with a rubber pad, and a lifting groove is formed in one of the rubber pads. A third spring is fixedly connected in the lifting groove. A pressing plate is fixedly connected to the upper surface of the third spring. A pressing rod is fixedly connected to the lower surface of the pressing plate. A second coordinating rod is rotatably connected to the pressing rod. One end of the second coordinating rod is rotatably connected to a linkage shaft. One end of the second lever is rotatably connected to the outer surface of the linkage shaft.

[0017] The beneficial effects of this invention are: 1. Using a load-bearing base, support rod, moving rail, protective frame, electric push rod, drive wheel and load-bearing shaft, the moving rail guides the movement direction of the protective frame, so that the equipment can move along the moving rail during operation. Furthermore, the drive wheel is used to rotate the second gear inside, which in turn rotates the chain body during the rotation process. 2. Using a reinforcing plate, extension arm, collection pipe, auxiliary wheel, and skewer, the reinforcing plate supports the extension arm. Furthermore, an electric push rod is used to adjust the rotation angle of the reinforcing plate, which facilitates the insertion of the skewer into the product to a certain extent. This allows the chain body to adjust the auxiliary wheel during movement, enabling the skewer to rotate synchronously. 3. Utilizing an I-shaped block, connecting block, first lever, first shaft, push plate, storage frame, inclined support plate, connecting shaft, connecting rod, first gear, first spring, lifting rod, chain protection frame, and support frame, in the initial stage, when the lifting rod is not raised or lowered, the inclined support plate supports the chain body and simultaneously supports one end of the chain body upward, thereby increasing the tension of the chain body to a certain extent. When the chain body loosens after prolonged movement, the loose side of the chain body falls and squeezes the I-shaped block for raising and lowering, thereby causing the first lever to rotate around the first shaft, which in turn drives the push plate upward at the other end of the first lever, which in turn pushes the lifting rod, causing the inclined support plate to rotate around the connecting shaft, which in turn raises one end of the inclined support plate, thereby driving the chain body upward for tensioning to a certain extent; 4. Utilizing a fourth spring, fixed frame, connecting shaft, sliding groove, telescopic rod, fixed shaft, second lever, third spring, pressing plate, linkage shaft, auxiliary slide plate, moving plate, pulling rod, first coordinating rod, insertion plate, rectangular slot, L-shaped frame, second spring, sliding block, and second coordinating rod, in the initial stage, the fourth spring adjusts the position of the synchronous gear, and the insertion plate cooperates with the rectangular slot on one side of the fixed frame to limit the synchronous gear. This, to a certain extent, prevents the tension of the chain body from decreasing when the synchronous gear moves during operation. After prolonged operation, insufficient chain tension will cause the slack side to continuously sag. When the slack side sags to a certain extent... The chain body begins to contact the pressing plate, which then moves downwards. This movement, via the linkage shaft, drives the second lever to rotate around the fixed shaft, which in turn pulls the pulling rod via the first coordinating rod. This simultaneously moves the insertion plate away from the rectangular slot, causing the fourth spring to push the moving plate. As the moving plate slides, the synchronous gear simultaneously drives the chain body upwards. Once the tension reaches a certain level, the slack side of the chain body begins to move upwards, moving away from the pressing plate. The elastic potential energy of the third and second springs then causes the second lever to return to its original position. The telescopic rod adapts to the moving distance of the moving plate in real time, thereby improving the synchronous tensioning effect of the equipment to a certain extent. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the overall structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 2 This is a schematic diagram of the overall structure of the extension arm of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 3 This is a schematic cross-sectional view of the extension arm of a chain tension synchronization adjustment device for a sampler proposed in this invention. Figure 4 This is a schematic diagram of the inclined groove distribution structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 5 This is a schematic cross-sectional view of the overall tension synchronization structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 6This is a schematic diagram of the tension synchronization structure distribution of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 7 This is a schematic diagram of the fixed frame distribution structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 8 This is a schematic diagram of the second lever and a partially enlarged structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 9 This is a schematic diagram of the moving plate and a partially enlarged structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 10 This is a schematic cross-sectional view of the support rod auxiliary structure of a chain tension synchronization adjustment device for a sampler proposed in this invention. Figure 11 This is a schematic diagram of the storage frame distribution structure of a chain tension synchronization adjustment device for a sampler proposed in this invention; Figure 12 This is a schematic diagram of the inclined support plate distribution structure of a chain tension synchronization adjustment device for a sampler proposed in this invention.

[0019] Figure Descriptions: 100. Main structure; 101. Bearing base; 102. Support rod; 103. Moving rail; 104. Protective frame; 105. Electric push rod; 106. Drive wheel; 107. Load-bearing shaft; 200. Support rod auxiliary structure; 201. Reinforcing plate; 202. Extension arm; 203. Collection pipe; 204. Auxiliary wheel; 205. Pole; 206. I-shaped block; 207. Connecting block; 208. First lever; 209. First shaft; 210. Push plate; 211. Storage frame; 212. Inclined support plate; 213. Connecting shaft; 214. Connecting rod; 215. First gear; 216. First spring; 217. Lifting rod; 218. Chain protection frame; 219. Support frame; 300. Tensioning synchronization structure; 301. Inclined... 302. Inclined groove; 303. Protective ring; 304. Fourth spring; 305. Chain body; 306. Upper protective rod; 307. Second gear; 308. Synchronous gear; 309. Fixed frame; 300. Connecting shaft; 310. Limiting rod; 311. Sliding groove; 312. Lifting groove; 313. Lower protective rod; 314. Rubber pad; 315. Lower pressure rod; 316. Telescopic rod; 317. Fixed shaft; 318. Second lever; 319. Third spring; 320. Extrusion plate; 321. Linkage shaft; 322. Auxiliary slide plate; 323. Moving plate; 324. Pulling rod; 325. First coordinating rod; 326. Insertion plate; 327. Rectangular slot; 328. L-shaped frame; 329. Second spring; 330. Sliding block; 331. Second coordinating rod. Detailed Implementation

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0022] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0024] Example 1:

[0025] Reference Figure 1 - Figure 12 According to one embodiment of the present invention, a chain tension synchronization adjustment device for a sampler is provided, including a main structure 100, a support rod auxiliary structure 200 and a tension synchronization structure 300.

[0026] The main structure 100 includes a bearing base 101 and a support rod 102 installed on the upper surface of the bearing base 101. A movable rail 103 is installed on the upper surface of the support rod 102. A protective frame 104 is slidably connected to the upper surface of the movable rail 103. A drive wheel 106 is rotatably connected inside the protective frame 104. Among them, the support rod auxiliary structure 200 includes a support frame 219 fixedly connected to one side of the drive wheel 106 and a reinforcing plate 201 fixedly connected to one side of the support frame 219. An extension arm 202 is fixedly connected to the side of the reinforcing plate 201 away from the support frame 219, and an auxiliary wheel 204 is rotatably connected to the other side of the extension arm 202. Finally, the tensioning synchronization structure 300 includes a fixed frame 308 fixedly connected to the inner surface of the support frame 219 and a sliding groove 311 opened on one side of the fixed frame 308. An insertion plate 326 and an auxiliary slide plate 322 are slidably connected in the sliding groove 311. A movable plate 323 is fixedly connected to one side of the auxiliary slide plate 322. The outer surface of the movable plate 323 is slidably connected in the fixed frame 308.

[0027] Furthermore, an electric push rod 105 is rotatably connected inside the protective frame 104. The end of the electric push rod 105 away from the protective frame 104 is rotatably connected to the support frame 219 via a load-bearing shaft 107. The two ends of the electric push rod 105 are respectively hinged to the protective frame 104 and the support frame 219. Its extension and retraction can drive the support frame 219 and the entire support rod auxiliary structure 200 to rotate around the axis of the drive wheel 106, thereby adjusting the pitch angle of the extension arm 202 so that the skewer 205 can be accurately inserted into the grain pile or car body at different heights and positions. The load-bearing shaft 107, as a rotating connector, allows the electric push rod 105 to adapt to angle changes during extension and retraction, avoiding additional bending moment and ensuring smooth transmission of driving force.

[0028] Furthermore, a first gear 215 is provided inside the auxiliary wheel 204, a connecting shaft 213 is fixedly connected inside the extension arm 202, an inclined support plate 212 is rotatably connected to the outer surface of the connecting shaft 213, the chain body 304 is meshed with the outer surface of the first gear 215, and a chain protection frame 218 is fixedly connected inside the extension arm 202. The first gear 215 inside the auxiliary wheel 204 meshes with the chain body 304, causing the auxiliary wheel 204 to rotate with the chain, providing support and guidance for the chain. The connecting shaft 213 is fixed inside the extension arm 202, and the inclined support plate 212 can rotate around the connecting shaft 213. Its plate surface abuts against the lower side of the slack side of the chain body 304, lifting the chain upward in the initial state and providing basic tension. The chain protection frame 218 surrounds the running area of ​​the chain body 304, preventing external debris from entering the meshing part, and at the same time providing installation space for the internal tension adjustment components.

[0029] Furthermore, a first spring 216 is fixedly connected inside the chain protection frame 218. An I-shaped block 206 is fixedly connected to the upper surface of the first spring 216, and a connecting block 207 is fixedly connected to the lower surface of the I-shaped block 206. A first lever 208 is rotatably connected to one side of the connecting block 207. A first shaft 209 is fixedly connected inside the extension arm 202. The outer surface of the first shaft 209 is rotatably connected to the first lever 208. A push plate 210 is fixedly connected to the side of the first lever 208 away from the connecting block 207. The first spring 216 supports the I-shaped block 206 to keep its upper end protected. The chain slack side of the chain body 304 is in contact with the lower edge of the slack side. When the chain slackens and droops due to wear or plastic elongation, the slack side of the chain applies downward pressure to the I-shaped block 206, causing the I-shaped block 206 to move downward against the elastic force of the first spring 216. The connecting block 207 moves downward with the I-shaped block 206, causing the first lever 208 to rotate around the first shaft 209. The other end of the first lever 208, namely the push plate 210, swings upward. The slack of the chain is converted into the upward displacement of the push plate 210, providing driving force for the subsequent lifting of the inclined support plate 212, thus realizing the automatic sensing of chain slack.

[0030] Furthermore, a lifting rod 217 is in contact with the upper surface of the push plate 210. The upper surface of the lifting rod 217 is rotatably connected to one side of the inclined support plate 212. A mounting block is fixedly connected to one side of the extension arm 202, and a collection tube 203 is provided inside the mounting block. A spur rod 205 is provided on one side of the auxiliary wheel 204. A storage frame 211 is fixedly connected inside the extension arm 202. The outer surface of the lifting rod 217 is slidably connected to the inner surface of the storage frame 211. The top of the lifting rod 217 is rotatably connected to one end of the inclined support plate 212 through a connecting rod 214. The lower end of the lifting rod 217 contacts the upper surface of the push plate 210. When the push plate 210 swings upward, it pushes the lifting rod 217. The lifting rod 217 slides upward along the storage frame 211; the upper end of the lifting rod 217 is rotatably connected to one end of the inclined support plate 212 via the connecting rod 214, and its top is also directly rotatably connected to one side of the inclined support plate 212, forming a double-point linkage; when the lifting rod 217 rises, it pushes the inclined support plate 212 to rotate upward around the connecting shaft 213, and the supporting surface of the inclined support plate 212 lifts the slack side of the chain body 304 upward, thereby increasing the wrap angle of the chain and reducing the slack side sag, realizing automatic compensation of chain tension; the collection tube 203 is used to collect the grain sample obtained by the sampling rod 205; the angle of the sampling rod 205 changes with the rotation of the auxiliary wheel 204 so as to insert into the material layer at different depths.

[0031] Working principle: The support base 101, support rod 102, moving rail 103, protective frame 104, electric push rod 105, drive wheel 106 and load-bearing shaft 107 are used to guide the movement direction of the protective frame 104 by the moving rail 103, so that the equipment can move along the moving rail 103 during operation. Furthermore, the drive wheel 106 is used to rotate the second gear 306 inside, which in turn causes the chain body 304 to rotate during the rotation of the second gear 306. The reinforcing plate 201, extension arm 202, collection pipe 203, auxiliary wheel 204, and skewer 205 are used to support the extension arm 202. Furthermore, the rotation angle of the reinforcing plate 201 is adjusted by the electric push rod 105, which makes it easier to insert the skewer into the product. This allows the chain body 304 to adjust the auxiliary wheel 204 during movement, so that the skewer can rotate synchronously. Utilizing I-shaped block 206, connecting block 207, first lever 208, first shaft 209, push plate 210, storage frame 211, inclined support plate 212, connecting shaft 213, connecting rod 214, first gear 215, first spring 216, lifting rod 217, chain protection frame 218, and support frame 219, in the initial stage, when the lifting rod 217 is not raised or lowered, the inclined support plate 212 supports the chain body 304 and simultaneously supports one end of the chain body 304 upwards, thereby improving the chain body 304 to a certain extent. The tension is adjusted so that when the chain body 304 loosens after prolonged movement, the loose side of the chain body 304 falls and presses against the I-shaped block 206 for lifting and lowering. This causes the first lever 208 to rotate around the first shaft 209, thereby driving the push plate 210 upward at the other end of the first lever 208. This causes the push plate 210 to push the lifting rod 217, which in turn causes the inclined support plate 212 to rotate around the connecting shaft 213. This causes one end of the inclined support plate 212 to rise, thereby lifting the chain body 304 to a certain extent for tensioning. Utilizing a fourth spring 303, a fixed frame 308, a connecting shaft 309, a sliding groove 311, a telescopic rod 316, a fixed shaft 317, a second lever 318, a third spring 319, a pressing plate 320, a linkage shaft 321, an auxiliary sliding plate 322, a moving plate 323, a pulling rod 324, a first coordinating rod 325, an insertion plate 326, a rectangular slot 327, an L-shaped frame 328, a second spring 329, a sliding block 330, and a second coordinating rod 331, in the initial stage, the fourth spring 303 adjusts the position of the synchronous gear 307. The insertion plate 326, in conjunction with the rectangular slot 327 on one side of the fixed frame 308, limits the movement of the synchronous gear 307, thus preventing a decrease in the tension of the chain body 304 during operation. This prevents the chain body 304 from becoming too loose after prolonged operation, causing the slack side to continue sagging. When the slack side drops to a certain extent, the chain body 304 begins to contact the pressing plate 320, and the pressing plate 320 begins to move downward. Then, the linkage shaft 321 pushes the second lever 318 to rotate around the fixed shaft 317, and then pulls the pulling rod 324 through the first coordinating rod 325. This simultaneously drives the insertion plate 326 away from the rectangular slot 327, so that the fourth spring 303 begins to push the moving plate 323. Then, when the moving plate 323 slides, the synchronous gear 307 drives the chain body 304 to rise. When the tension reaches a certain level, the slack side of the chain body 304 begins to move upward. The chain body 304 moves away from the pressing plate 320. Then, through the elastic potential energy of the third spring 319 and the second spring 329, the second lever 318 returns to its original position. The telescopic rod 316 adapts to the moving distance of the moving plate 323 in real time, thereby improving the synchronous tensioning effect of the equipment to a certain extent.

[0032] Example 2:

[0033] Reference Figure 4 - Figure 9The difference from Embodiment 1 is that: a second gear 306 is provided inside the drive wheel 106, the chain body 304 is meshed with the outer surface of the second gear 306, a connecting shaft 309 is rotatably connected inside the moving plate 323, a synchronous gear 307 is fixedly connected to the outer surface of the connecting shaft 309, inclined grooves 301 are provided on both sides of the support frame 219, a protective ring 302 is slidably connected inside the inclined groove 301, and one end of the connecting shaft 309 is rotatably connected inside the protective ring 302. Power is transmitted to the entire transmission structure through the meshing of the second gear 306 inside the drive wheel 106 with the chain body 304; the connecting shaft 309 inside the moving plate 323 drives the synchronous gear 307. When gear 307 rotates, synchronous gear 307 meshes with the other side of chain body 304, forming a driving and driven wheel together with second gear 306. Inclined grooves 301 are formed on both sides of support frame 219. Protective ring 302 slides in inclined groove 301. At the same time, protective ring 302 is sleeved on the end of connecting shaft 309, so that the overall position of connecting shaft 309 and synchronous gear 307 can move along the direction of inclined groove 301, thereby changing the slack span of chain body 304 and realizing the adjustment of tension. Protective ring 302 provides radial support to connecting shaft 309 to prevent it from deviating during sliding and ensure the meshing accuracy of synchronous gear 307 and chain body 304.

[0034] Furthermore, a fourth spring 303 is fixedly connected inside the fixed frame 308. One end of the fourth spring 303 is fixedly connected to one side of the moving plate 323. One end of the chain body 304 is fixedly connected to a limit rod 310, and both ends of the limit rod 310 are fixedly connected to both ends of the chain body 304. A sliding block 330 is fixedly connected to one side of the moving plate 323. The fourth spring 303 provides a continuous elastic thrust to the moving plate 323. When the moving plate 323 is not locked, the fourth spring 303 pushes the moving plate 323 and the synchronous gear 307 to move in the direction of tensioning the chain. The limit rod 310 connects the two ends of the chain body 304, so that the chain forms a closed loop and limits the maximum rotation distance of the chain to prevent damage to the auxiliary wheel 204. The sliding block 330 is fixed to one side of the moving plate 323 and moves synchronously with the moving plate 323, providing a linkage basis for the subsequent insertion plate 326 and locking mechanism.

[0035] Furthermore, an L-shaped frame 328 is fixedly connected to the lower surface of the sliding block 330, and an insertion plate 326 is slidably connected inside the L-shaped frame 328. A second spring 329 is fixedly connected to the upper surface of the insertion plate 326, with one end of the second spring 329 fixedly connected to the lower surface of the sliding block 330. A rectangular slot 327 is provided on one side of the fixed frame 308, and the lower surface of the insertion plate 326 is adapted to the size of the rectangular slot 327. A pull rod 324 is fixedly connected to the upper surface of the insertion plate 326, and a first coordinating rod 325 is rotatably connected to one side of the pull rod 324. A telescopic rod 316 is rotatably connected to one end of the first coordinating rod 325. Thus, as the L-shaped frame 328 moves with the sliding block 330, the insertion plate 326 inside can slide in the vertical direction; the second spring 329 presses the insertion plate 326 downward. The lower surface of the insertion plate 326 is kept in contact with the rectangular slot 327 on the fixed frame 308. When the insertion plate 326 is inserted into the rectangular slot 327, the sliding block 330 and the moving plate 323 are locked in their current positions, the thrust of the fourth spring 303 is balanced, and the position of the synchronous gear 307 is fixed. When the chain is slack and needs to be tensioned, the pull rod 324 is pulled upward by the first cooperating rod 325, overcoming the elastic force of the second spring 329 to disengage the insertion plate 326 from the rectangular slot 327, releasing the lock, and the moving plate 323 can then move under the push of the fourth spring 303. The first cooperating rod 325 is rotatably connected to the telescopic rod 316, converting the swing of the second lever 318 into the lifting and lowering motion of the pull rod 324. The telescopic rod 316 can adapt to changes in length to ensure the continuity of transmission.

[0036] Furthermore, a second lever 318 is fixedly connected to one end of the telescopic rod 316, and a fixed shaft 317 is fixedly connected to the inner surface of the support frame 219. The inner surface of the second lever 318 is rotatably connected to the outer surface of the fixed shaft 317. An upper protective rod 305 and a lower protective rod 313 are fixedly connected to the upper surface of the chain protection frame 218, respectively. The second lever 318 rotates around the fixed shaft 317, with one end connected to the first cooperating rod 325 via the telescopic rod 316, and the other end connected to the lower pressure rod 313 via the linkage shaft 321. The 15 connection forms a swing transmission mechanism; when the chain slackens and droops, the lower pressure rod 315 is squeezed down, driving the second lever 318 to rotate around the fixed shaft 317, causing the other end to lift up, and then pulling the insertion plate 326 to unlock through the telescopic rod 316; the upper protective rod 305 and the lower protective rod 313 are respectively fixed to the upper surface of the chain protection frame 218, forming protection on the top and sides of the chain body 304 to prevent foreign objects from entering the transmission area, and at the same time serving as a limit guide for the chain during operation, reducing chain vibration.

[0037] Furthermore, a rubber pad 314 is fixedly connected to the inner surface of the chain protection frame 218, and a lifting groove 312 is opened in one of the rubber pads 314. A third spring 319 is fixedly connected in the lifting groove 312. A pressing plate 320 is fixedly connected to the upper surface of the third spring 319. A pressing rod 315 is fixedly connected to the lower surface of the pressing plate 320. A second coordinating rod 331 is rotatably connected to the pressing rod 315. A linkage shaft 321 is rotatably connected to one end of the second coordinating rod 331. A second lever 318 is rotatably connected to the outer surface of the linkage shaft 321. Rubber pad 314 is fixed to the inner surface of chain protection frame 218 to buffer vibration during chain operation; lifting groove 312 provides vertical guidance for pressing plate 320, and third spring 319 supports pressing plate 320 so that its upper surface is in contact with the lower edge of the slack side of the chain; when the chain sags due to wear and elongation, the slack side of the chain applies downward pressure to pressing plate 320, causing pressing plate 320 to overcome the elastic force of third spring 319 and move down along lifting groove 312; pressing rod 315 moves down synchronously with pressing plate 320, pushing linkage shaft 3 through second cooperating rod 331. 21 moves downward; the linkage shaft 321 drives one end of the second lever 318 to descend, causing the second lever 318 to swing around the fixed shaft 317, while the other end rises; this upward movement pulls the pulling rod 324 through the telescopic rod 316 and the first cooperating rod 325, causing the insertion plate 326 to disengage from the rectangular slot 327 and unlock the moving plate 323; subsequently, the fourth spring 303 pushes the moving plate 323 and the synchronous gear 307 to move, tensioning the chain; when the chain is tensioned, the slack side of the chain moves upward, reducing the pressure on the pressing plate 320, and the third spring 319 pushes the pressing plate 320... 20. Reset, the second lever 318 swings in the opposite direction, and the insertion plate 326, under the action of the second spring 329, re-engages into the rectangular slot 327, locking the new tension position.

[0038] Working principle: First, the main structure 100 of the device serves as the basic carrier of the sampling machine. The bearing base 101 supports the moving rail 103 through the support rod 102. The protective frame 104 slides on the upper surface of the moving rail 103, realizing the horizontal movement of the sampling rod. The drive wheel 106 rotatably connected inside the protective frame 104 is equipped with a second gear 306. The second gear 306 meshes with the chain body 304, transmitting power to the entire structure. The support rod auxiliary structure 200 is fixedly connected to one side of the drive wheel 106 through the support frame 219. The reinforcing plate... 201 The extension arm 202 is securely installed on the support frame 219. The auxiliary wheel 204 is rotatably connected to the end of the extension arm 202. One end of the electric push rod 105 is rotatably connected to the protective frame 104, and the other end is rotatably connected to the support frame 219 through the load-bearing shaft 107. The extension and retraction of the electric push rod 105 can drive the support frame 219 and the entire support rod auxiliary structure 200 to rotate around the axis of the drive wheel 106, thereby adjusting the pitch angle of the extension arm 202 so that the skewer 205 can be accurately inserted into the grain pile or car body at different heights and positions. Secondly, during the initial operation of the device, the chain body 304 is in a normal tensioned state. The inclined support plate 212 rotates around the connecting shaft 213, and its surface abuts against the lower side of the slack side of the chain body 304, lifting the chain upward and providing basic tension. At the same time, the upper end of the I-shaped block 206, supported by the first spring 216, remains in contact with the lower edge of the slack side of the chain. However, at this time, the pressure of the chain on the I-shaped block 206 is less than the elastic force of the first spring 216, and the I-shaped block 206 is in a high position. The first lever 208 is in a balanced state of inclined support. As the sampler operates frequently for a long time, including starting and stopping, reversing, and changing loads, the chain body 304 undergoes plastic elongation and chain link wear. The slack side of the chain gradually droops, and the pressure of the drooping slack side on the upper end of the I-shaped block 206 increases. When this pressure exceeds the preload of the first spring 216, the I-shaped block 206 overcomes the elastic force of the first spring 216 and moves downward. As the I-shaped block 206 moves, the connecting block 207 fixed on the lower surface of the I-shaped block 206 moves downward, causing the first lever 208 to rotate around the first shaft 209. The other end of the first lever 208, namely the push plate 210, swings upward, pushing the lifting rod 217, which is in contact with its upper surface, to slide upward along the storage frame 211. The upper end of the lifting rod 217 is rotatably connected to one end of the inclined support plate 212 through the connecting rod 214. At the same time, its top is also directly rotatably connected to one side of the inclined support plate 212, forming a two-point linkage. When the lifting rod 217 rises, it pushes the inclined support plate 212 to rotate upward around the connecting shaft 213. The support surface of the inclined support plate 212 further lifts the slack side of the chain body 304 upward, thereby increasing the wrap angle between the chain and the auxiliary wheel 204, reducing the slack side sag, and realizing the first-level automatic compensation of chain tension. This compensation amount corresponds to the initial elongation stage of the chain and is suitable for real-time adjustment of slight slack. Secondly, when the chain elongates significantly due to long-term wear, and the inclined support plate 212 of the primary tensioning mechanism, even when rotated to its limit position, is insufficient to restore normal chain tension, the slack side of the chain will continue to droop, triggering the secondary tensioning mechanism of the tensioning synchronization structure 300. In the initial state, the fourth spring 303 applies a continuous elastic thrust to the moving plate 323, but the moving plate 323 is fixed in the initial position by the locking mechanism. The locking mechanism consists of an insertion plate 326 and a rectangular slot 327: the insertion plate 326 is pressed downward under the elastic force of the second spring 329, and its lower surface is embedded in the rectangular slot 327 on one side of the fixed frame 308, preventing the sliding block 330 and the moving plate 323 from moving, and keeping the position of the synchronization gear 307 fixed, ensuring the meshing accuracy of the chain during normal operation. As the slack increases further, the slack edge continues to fall and begins to contact the upper surface of the extrusion plate 320, applying downward pressure. The extrusion plate 320 overcomes the elastic force of the third spring 319 and moves downward along the lifting groove 312. The pressing rod 315 moves downward synchronously with the extrusion plate 320. The pressing rod 315 pushes the linkage shaft 321 downward through the second cooperating rod 331. The linkage shaft 321 drives the second lever 318 to rotate around the fixed shaft 317. The other end of the second lever 318, which is connected to the telescopic rod 316, swings upward. Through the telescopic rod 316 and the first cooperating rod 325, the pulling rod 324 moves upward. The pulling rod 324 is lifted to overcome the elastic force of the second spring 329, pulling the insertion plate 326 out of the rectangular slot 327 and releasing the lock on the sliding block 330 and the moving plate 323. At this moment, the elastic force of the fourth spring 303 immediately pushes the moving plate 323 to slide along the sliding groove 311 in the fixed frame 308 in the tensioning direction. The moving plate 323 drives the synchronous gear 307 to move together through the auxiliary slide plate 322 and the connecting shaft 309. The synchronous gear 307 meshes with the chain body 304, lifting the slack side of the chain upward during the movement, achieving a large range of tension compensation. As the moving plate 323 moves, the insertion plate 326 moves synchronously under the drive of the L-shaped frame 328. When the chain tension reaches the predetermined value, the chain... As the slack side moves upward, the pressure on the extrusion plate 320 decreases. The third spring 319 pushes the extrusion plate 320 and the lower pressure rod 315 back to their original positions. Under the combined action of the third spring 319 and the second spring 329, the second lever 318 swings in the opposite direction. Under the elastic force of the second spring 329, the insertion plate 326 re-embeds downward into the nearest rectangular slot 327, locking the moving plate 323 in a new position. The telescopic rod 316 automatically adjusts its length during transmission to adapt to the positional changes between the swing of the second lever 318 and the movement of the moving plate 323. Then, the second gear 306 and the synchronous gear 307 in the drive wheel 106 mesh with the two ends of the chain body 304 respectively, forming a driving and driven gear system. When the moving plate 323 drives the synchronous gear 307 to move, the tension on both sides of the chain changes synchronously, avoiding chain wear or running jamming caused by unilateral tension. The protective ring 302 slides in the inclined groove 301 to provide radial support for the connecting shaft 309, ensuring the meshing accuracy of the synchronous gear 307 during movement. The upper protective rod 305 and the lower protective rod 313 form protection on the top and sides of the chain body 304 to prevent foreign objects from entering the transmission area. At the same time, they serve as limit guides for the chain during operation, reducing chain vibration. The rubber pad 314 buffers the vibration of the chain during operation and reduces noise. Finally, when the sampling machine is working normally, the drive wheel 106 drives the chain body 304 to run, and the sampling rod 205 changes its angle and inserts into the grain pile to take samples under the drive of the electric push rod 105. The samples are collected through the collection tube 203. When the chain becomes loose during long-term operation, the I-shaped block 206, the first lever 208, the lifting rod 217 and the inclined support plate 212 respond first to provide small-range real-time compensation. If the looseness exceeds the first-level compensation capacity, the squeezing plate 320, the third spring 319, the second lever 318, the insertion plate 326, the fourth spring 303, the moving plate 323 and the synchronous gear 307 automatically unlock and step-by-step adjust to restore the chain to the normal tension state. The two-stage tensioning mechanism works together to achieve automatic compensation from slight looseness to large elongation throughout the entire process without the need for manual stopping and adjustment, effectively ensuring the positioning accuracy of the sampling rod and the representativeness of the samples.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A chain tension synchronization adjustment device for a sampler, characterized in that, include: The main structure (100) includes a bearing base (101) and a support rod (102) mounted on the upper surface of the bearing base (101). A movable rail (103) is mounted on the upper surface of the support rod (102). A protective frame (104) is slidably connected to the upper surface of the movable rail (103). A drive wheel (106) is rotatably connected inside the protective frame (104). The support rod auxiliary structure (200) includes a support frame (219) fixedly connected to one side of the drive wheel (106) and a reinforcing plate (201) fixedly connected to one side of the support frame (219). An extension arm (202) is fixedly connected to the side of the reinforcing plate (201) away from the support frame (219), and an auxiliary wheel (204) is rotatably connected to the other side of the extension arm (202). The tensioning synchronization structure (300) includes a fixed frame (308) fixedly connected to the inner surface of the support frame (219) and a sliding groove (311) opened on one side of the fixed frame (308). An insertion plate (326) and an auxiliary sliding plate (322) are slidably connected in the sliding groove (311). A movable plate (323) is fixedly connected to one side of the auxiliary sliding plate (322), and the outer surface of the movable plate (323) is slidably connected in the fixed frame (308).

2. The chain tension synchronization adjustment device for a sampler according to claim 1, characterized in that: An electric push rod (105) is rotatably connected inside the protective frame (104). The end of the electric push rod (105) away from the protective frame (104) is rotatably connected to the support frame (219) through the load-bearing shaft (107).

3. The chain tension synchronization adjustment device for a sampler according to claim 1, characterized in that: The auxiliary wheel (204) is provided with a first gear (215), the extension arm (202) is fixedly connected with a connecting shaft (213), the outer surface of the connecting shaft (213) is rotatably connected with an inclined support plate (212), the outer surface of the first gear (215) is meshed with a chain body (304), and the extension arm (202) is fixedly connected with a chain protection frame (218).

4. A chain tension synchronization adjustment device for a sampler according to claim 3, characterized in that: A first spring (216) is fixedly connected inside the chain protection frame (218). An I-shaped block (206) is fixedly connected to the upper surface of the first spring (216). A connecting block (207) is fixedly connected to the lower surface of the I-shaped block (206). A first lever (208) is rotatably connected to one side of the connecting block (207). A first shaft (209) is fixedly connected inside the extension arm (202). The outer surface of the first shaft (209) is rotatably connected inside the first lever (208). A push plate (210) is fixedly connected to the side of the first lever (208) away from the connecting block (207).

5. A chain tension synchronization adjustment device for a sampler according to claim 4, characterized in that: The upper surface of the push plate (210) is in contact with a lifting rod (217). The upper surface of the lifting rod (217) is rotatably connected to one side of the inclined support plate (212). An installation block is fixedly connected to one side of the extension arm (202), and a collection tube (203) is provided inside the installation block. A spur rod (205) is provided on one side of the auxiliary wheel (204). A storage frame (211) is fixedly connected inside the extension arm (202). The outer surface of the lifting rod (217) is slidably connected to the inner surface of the storage frame (211). The top of the lifting rod (217) is rotatably connected to one end of the inclined support plate (212) through a connecting rod (214).

6. A chain tension synchronization adjustment device for a sampler according to claim 5, characterized in that: The drive wheel (106) is provided with a second gear (306), the chain body (304) is meshed with the outer surface of the second gear (306), the moving plate (323) is rotatably connected with a connecting shaft (309), the outer surface of the connecting shaft (309) is fixedly connected with a synchronous gear (307), the support frame (219) is provided with inclined grooves (301) on both sides, a protective ring (302) is slidably connected in the inclined groove (301), and one end of the connecting shaft (309) is rotatably connected in the protective ring (302).

7. A chain tension synchronization adjustment device for a sampler according to claim 6, characterized in that: A fourth spring (303) is fixedly connected inside the fixed frame (308). One end of the fourth spring (303) is fixedly connected to one side of the moving plate (323). One end of the chain body (304) is fixedly connected to a limit rod (310), and both ends of the limit rod (310) are fixedly connected to both ends of the chain body (304). A sliding block (330) is fixedly connected to one side of the moving plate (323).

8. A chain tension synchronization adjustment device for a sampler according to claim 7, characterized in that: An L-shaped frame (328) is fixedly connected to the lower surface of the sliding block (330). An insertion plate (326) is slidably connected inside the L-shaped frame (328). A second spring (329) is fixedly connected to the upper surface of the insertion plate (326). One end of the second spring (329) is fixedly connected to the lower surface of the sliding block (330). A rectangular slot (327) is provided on one side of the fixed frame (308). The lower surface of the insertion plate (326) is adapted to the size of the rectangular slot (327). A pull rod (324) is fixedly connected to the upper surface of the insertion plate (326). A first cooperating rod (325) is rotatably connected to one side of the pull rod (324). A telescopic rod (316) is rotatably connected to one end of the first cooperating rod (325).

9. A chain tension synchronization adjustment device for a sampler according to claim 8, characterized in that: One end of the telescopic rod (316) is fixedly connected to a second lever (318), the inner surface of the support frame (219) is fixedly connected to a fixed shaft (317), the inner surface of the second lever (318) is rotatably connected to the outer surface of the fixed shaft (317), and the upper protective rod (305) and the lower protective rod (313) are fixedly connected to the upper surface of the chain protection frame (218).

10. A chain tension synchronization adjustment device for a sampler according to claim 9, characterized in that: A rubber pad (314) is fixedly connected to the inner surface of the chain protection frame (218), and a lifting groove (312) is opened in one of the rubber pads (314). A third spring (319) is fixedly connected in the lifting groove (312). A pressing plate (320) is fixedly connected to the upper surface of the third spring (319). A pressing rod (315) is fixedly connected to the lower surface of the pressing plate (320). A second coordinating rod (331) is rotatably connected to the pressing rod (315). A linkage shaft (321) is rotatably connected to one end of the second coordinating rod (331). A second lever (318) is rotatably connected to the outer surface of the linkage shaft (321).

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