Chain tensioning mechanism, chain mechanism and conveying device

Abstract

The utility model discloses a chain tensioning mechanism, a chain mechanism and a conveying device. The chain tensioning mechanism comprises a box body. The tensioning block is arranged on the box body; the first chain wheel is connected with the second chain wheel through a chain; the elastic piece is connected between the tensioning block and the first chain wheel, when the first chain wheel moves in the direction close to or away from the second chain wheel, the elastic piece can be elastically deformed, and the elastic piece is used for driving the first chain wheel through elastic force to tension the chain; the adjusting structure is connected with the tensioning block and is configured to drive the tensioning block to move relative to the box body so as to adjust the elastic force of the elastic part, it can be guaranteed that the chain can be tensioned by adjusting the position of the tensioning block in cooperation with the adjusting structure, and meanwhile the tensioning precision of the chain is improved; according to the mode that the chain is automatically tensioned by adjusting the distance between the first chain wheel and the second chain wheel, adjustment is convenient, the chain tensioning device can be suitable for a two-way transfer chain conveying line, and the universality of equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of conveying devices, and in particular to a chain tensioning mechanism, a chain mechanism and a conveying device. Background Art

[0002] Chain conveyors generally manually adjust the distance between the drive sprocket and the first sprocket to achieve chain tension. This method is not easy to control the tension adjustment, and it cannot eliminate the periodic chain tension changes caused by the polygon effect during operation. There are also some automatic tensioning mechanisms on the market, but the usual automatic tensioning mechanism is located on the side of the drive unit, and automatically tensions the loose side of the chain. When the drive motor reverses, the loose side and the tight side are interchanged, the tensioning mechanism will be pulled out, the chain will become longer and be rolled into the drive sprocket, causing tension failure, resulting in the automatic tensioning mechanism being only applicable to unidirectional conveyor lines, with many restrictions. Utility Model Content

[0003] In order to solve the above problems, the present application provides a chain tensioning mechanism, a chain mechanism and a conveying device.

[0004] According to one aspect of an embodiment of the present application, a chain tensioning mechanism is disclosed, which includes a box body; a tensioning block arranged on the box body; a first sprocket used to be connected to a second sprocket through a chain; an elastic member connected between the tensioning block and the first sprocket, and when the first sprocket moves in a direction close to or away from the second sprocket, the elastic member can be elastically deformed, and the elastic member is used to drive the first sprocket to tension the chain through elastic force; an adjustment structure is connected to the tensioning block and is configured to drive the tensioning block to move relative to the box body to adjust the elastic force of the elastic member.

[0005] In an exemplary embodiment, the adjustment structure is configured to drive the tension block to reciprocate relative to the box body along a first preset direction to adjust the distance between the tension block and the first sprocket; the elastic member includes a linear spring, one end of the linear spring is connected to the tension block, and the other end is connected to the first sprocket, and the elastic force of the linear spring changes in response to the distance.

[0006] In an exemplary embodiment, the direction in which the first sprocket approaches to or moves away from the second sprocket is parallel to the first preset direction.

[0007] In an exemplary embodiment, a first guide groove is provided on the tensioning block, and a portion of the first sprocket extends into the first guide groove to serve as a guide portion. When the first sprocket moves in a direction approaching or away from the second sprocket, or when the tensioning block moves under the drive of the adjustment structure, the guide portion slides relatively along the first guide groove.

[0008] In an exemplary embodiment, two opposite side surfaces of the guide portion extending along the first guide groove are both in contact with the inner wall of the first guide groove.

[0009] In an exemplary embodiment, the guide portion is a cubic structure.

[0010] In an exemplary embodiment, a position mark is provided on the end face of the guide portion, and at least three indicator marks are provided on the end face of the tensioning block facing away from the first sprocket. The three indicator marks are arranged in sequence on the side positions of the first guide groove, and the position mark can point to any one of the indicator marks.

[0011] In an exemplary embodiment, the indicator mark is a color block.

[0012] In an exemplary embodiment, the tensioning block, the elastic member and the adjustment structure are symmetrically arranged in two groups with the first sprocket as the center, and the guide parts are formed at both ends of the first sprocket, and the two guide parts extend into the first guide grooves of the two tensioning blocks one by one.

[0013] In an exemplary embodiment, the adjustment structure includes a bolt, a limiting block is provided at one end of the bolt, a through hole is provided on the box body, the bolt is passed through the through hole, the limiting block is located at one axial end of the through hole and is used to abut against a portion around the through hole, the tensioning block is located at the other axial end of the through hole and is threadedly connected to the bolt, and the bolt is rotated to make the tensioning block move axially along the bolt.

[0014] In an exemplary embodiment, the first sprocket includes a wheel body and a core shaft, the wheel body is connected to the core shaft and can rotate around the core shaft, one end of the core shaft is provided with a radially penetrating through hole, the bolt is passed through the through hole, the elastic member is nested on the outside of the bolt, one end of the elastic member abuts against the tensioning block, and the other end abuts against the core shaft.

[0015] In an exemplary embodiment, a second guide groove is provided on the box body, and the tensioning block can slide relatively along the second guide groove under the drive of the adjustment structure.

[0016] According to one aspect of an embodiment of the present application, a chain mechanism is disclosed, which includes the above-mentioned chain tensioning mechanism, a second sprocket and a chain, wherein the second sprocket is arranged on a box body, and the chain is engaged with the first sprocket and the second sprocket.

[0017] According to one aspect of an embodiment of the present application, a conveying device is disclosed, which includes the above-mentioned chain mechanism and a driving member, wherein the driving member is connected to the first sprocket or the second sprocket and can be used to drive the first sprocket or the second sprocket connected thereto to rotate.

[0018] The technical solution provided by the embodiments of the present application includes at least the following beneficial effects:

[0019] The first sprocket and the second sprocket are connected by a chain, and the first sprocket is subjected to the tension of the chain toward the second sprocket during operation. The elastic member is connected between the tensioning block and the first sprocket. The relative spacing adjustment between the first sprocket and the second sprocket can cause elastic deformation of the elastic member, so that the reset force of the elastic member changed by the expansion and contraction can counteract the floating tension of the chain, maintain the balance of the first sprocket, and thus realize automatic tensioning of the chain by the first sprocket. At the same time, the tensioning block is driven to move relative to the box body according to the adjustment structure to adjust the position of the tensioning block, and then the elastic force of the elastic member can be adjusted so that the first sprocket can smoothly and reasonably tension the chain. The present application cooperates with the adjustment structure to adjust the position of the tensioning block to ensure that the chain is tensioned and the tensioning accuracy of the chain is improved. Moreover, the method of realizing automatic tensioning of the chain by adjusting the spacing between the first sprocket and the second sprocket is convenient for adjustment, can be applied to chain conveyor lines with bidirectional transfer, and improves the versatility of equipment.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the description, are used to explain the principles of the present application.

[0022] Figure 1 A structural diagram of a chain mechanism provided in one embodiment of the present application;

[0023] Figure 2 A front view of a chain mechanism provided by an embodiment of the present application, wherein the first sprocket is in a pre-adjustment position;

[0024] Figure 3 for Figure 2 The cross-sectional view along the AA direction;

[0025] Figure 4 A front view of a chain mechanism provided by an embodiment of the present application, wherein the first sprocket is in an adjusted position;

[0026] Figure 5 for Figure 4 A partial enlarged view of area B in the middle;

[0027] Figure 6 A structural diagram of a chain mechanism provided in an embodiment of the present application, wherein a first sprocket is engaged with a chain;

[0028] Figure 7 A structural diagram of a conveying device provided in one embodiment of the present application includes a driving member.

[0029] The following are the descriptions of the reference numerals:

[0030] 100-box body, 110-tensioning block, 120-first sprocket, 130-elastic member, 140-adjusting structure, 210-first guide groove, 220-second guide groove, 230-guide part, 240-bolt, 241-limiting block, 310-through hole, 320-wheel body, 330-core shaft, 340-linear spring, 510-position mark, 520-indicator mark, 610-chain, 710-second sprocket, 720-driving member. DETAILED DESCRIPTION

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that the description of this application will be more comprehensive and complete, and the concept of the example embodiments will be fully conveyed to those skilled in the art.

[0032] In the description of the utility model, all the connection relationships mentioned do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the utility model can be combined interchangeably without conflicting with each other.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0035] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number, and "above", "below", "within" etc. are understood to include the number.

[0036] Reference Figure 1 , Figure 6 and Figure 7 The chain 610 tensioning mechanism disclosed in the present application includes a box body 100, a tensioning block 110, a first sprocket 120, an elastic member 130 and an adjusting structure 140, wherein the tensioning block 110 is arranged on the box body 100; the first sprocket 120 is used to be connected to the second sprocket 710 through the chain 610; the elastic member 130 is connected between the tensioning block 110 and the first sprocket 120, and when the first sprocket 120 moves in a direction close to or away from the second sprocket 710, the elastic member 130 can be elastically deformed, and the elastic member 130 is used to drive the first sprocket 120 through elastic force to tension the chain 610; the adjusting structure 140 is connected to the tensioning block 110, and is configured to drive the tensioning block 110 to move relative to the box body 100 to adjust the elastic force of the elastic member 130.

[0037] Specifically, the first sprocket 120 is connected to the second sprocket 710 by the chain 610. When working, under the polygonal effect of the chain 610, the chain 610 forms a floating tension on the first sprocket 120 toward the second sprocket 710, and the elastic member 130 is connected between the tensioning block 110 and the first sprocket 120. Under the floating tension effect, the relative distance between the first sprocket 120 and the second sprocket 710 is adjusted, thereby causing elastic deformation of the elastic member 130, so that the reset force of the elastic member 130 changed by the expansion and contraction can counteract the floating tension of the chain 610, maintain the balance of the first sprocket 120, and then realize the automatic tensioning of the chain 610 by the first sprocket 120. At the same time, the staff The tensioning block 110 can be driven to move relative to the box body 100 according to the adjustment structure 140 to adjust the position of the tensioning block 110 and position the tensioning block 110 relative to the box body 100, and then the elastic force of the elastic member 130 can be adjusted so that the first sprocket 120 can smoothly and reasonably tension the chain 610. The present application cooperates with the adjustment structure 140 to adjust the position of the tensioning block 110 to ensure that the chain 610 is tensioned, while improving the tensioning accuracy of the chain 610. Moreover, the automatic tensioning of the chain 610 is achieved by adjusting the distance between the first sprocket 120 and the second sprocket 710, which is convenient for adjustment and can be applied to the chain 610 conveyor line with bidirectional transfer, thereby improving the applicability of the equipment.

[0038] Furthermore, the adjustment structure 140 is configured to drive the tensioning block 110 to reciprocate relative to the box body 100 along a first preset direction to adjust the distance between the tensioning block 110 and the first sprocket 120; the elastic member 130 includes a linear spring 340, one end of the linear spring 340 is connected to the tensioning block 110, and the other end is connected to the first sprocket 120, and the elastic force of the linear spring 340 changes in response to the distance.

[0039] Specifically, the adjustment structure 140 can drive the tensioning block 110 to move along a first preset direction to adjust the distance between the tensioning block 110 and the first sprocket 120, and then adjust the elastic force of the elastic member 130. The two ends of the linear spring 340 are respectively connected to the tensioning block 110 and the first sprocket 120. When the distance between the tensioning block 110 and the first sprocket 120 changes, the linear spring 340 will expand and contract accordingly and its own elastic force will change in response to the distance between the tensioning block 110 and the first sprocket 120, thereby improving the automatic tensioning accuracy of the chain 610 and facilitating adjustment.

[0040] In fact, when the linear spring 340 is a compression spring, the linear spring 340 and the tension block 110 are located on the side of the first sprocket 120 that is surrounded by the chain 610, so that the tension block 110 and the linear spring 340 can provide the first sprocket 120 with a force away from the second sprocket 710 to resist the tension of the chain 610. When the linear spring 340 is a tension spring, the tension block 110 is located outside the side surrounded by the first sprocket 120, and the linear spring 340 connects the tension block 110 and the first sprocket 120 to pull the first sprocket 120 away from the second sprocket 710 to resist the tension of the chain 610. In addition, the elastic member 130 can also be a material with a resilient property, or a nonlinear spring 340, as long as the elastic member 130 can respond to the displacement of the tension block 110 and drive the first sprocket 120 to move relative to the second sprocket 710 after the adjustment structure 140 adjusts the position of the tension block 110 by a certain distance.

[0041] Furthermore, the direction in which the first sprocket 120 approaches or moves away from the second sprocket 710 is parallel to the first preset direction.

[0042] In this embodiment, the first preset direction in which the tension block 110 is adjusted along with the adjustment structure 140 is parallel to the direction in which the first sprocket 120 approaches or moves away from the second sprocket 710, so that the elastic member 130 responds more promptly, which facilitates the control of the position of the first sprocket 120 relative to the second sprocket 710, improves the adjustment accuracy, and reduces the space occupied. In other embodiments, the direction in which the first sprocket 120 approaches or moves away from the second sprocket 710 can be staggered with the first preset direction, as long as the adjustment structure 140 can adjust the length of the linear spring 340 when driving the tension block 110 to move along the first preset direction.

[0043] Reference Figure 2 In this embodiment, a first guide groove 210 is provided on the tensioning block 110, and a portion of the first sprocket 120 extends into the first guide groove 210 to serve as a guide portion 230. When the first sprocket 120 moves in a direction approaching or away from the second sprocket 710, or when the tensioning block 110 moves under the drive of the adjustment structure 140, the guide portion 230 slides relatively along the first guide groove 210.

[0044] Specifically, when the first sprocket 120 is subjected to the floating tension of the chain 610, if the floating tension is greater than the restoring force provided by the elastic member 130, the guide portion 230 of the first sprocket 120 slides along the first guide groove 210 toward the second sprocket 710, so that the distance between the first sprocket 120 and the second sprocket 710 is reduced; if the floating tension is less than the restoring force provided by the elastic member 130, the guide portion 230 of the first sprocket 120 slides along the first guide groove 210 toward the direction away from the second sprocket 710, so that the distance between the first sprocket 120 and the second sprocket 710 is reduced. The spacing between the second sprockets 710 is increased to achieve automatic tensioning of the chain 610. The first guide groove 210 extends toward the second sprocket 710, so that the guide portion 230 of the first sprocket 120 can approach or move away from the second sprocket 710 when sliding along the first guide groove 210. The first guide groove 210 provides a guiding support for the movement of the first sprocket 120 relative to the box body 100, thereby improving the movement stability of the first sprocket 120. In addition, the two ends of the first guide groove 210 can also limit the excessive movement of the first sprocket 120, thereby improving safety.

[0045] Furthermore, the two opposite side surfaces of the guide portion 230 extending along the first guide groove 210 are both in contact with the inner wall of the first guide groove 210. Specifically, when the first sprocket 120 approaches or moves away from the second sprocket 710, the guide portion 230 always contacts the first guide groove 210, thereby reducing the vibration of the first sprocket 120 during the rotation and displacement processes, further improving the installation stability and movement stability of the first sprocket 120, reducing the vibration of the elastic member 130, and improving the accuracy of the automatic tensioning of the chain 610.

[0046] In this embodiment, the guide part 230 is a cubic structure. Specifically, the first sprocket 120 includes a wheel body 320 and a core shaft 330. The wheel body 320 is meshed with the chain 610 and can rotate relative to the core shaft 330. The guide part 230 is arranged on the core shaft 330. The two opposite side walls of the cubic guide part 230 can fit the side walls of the first guide groove 210, ensuring that the guide part 230 slides without being dragged by the rotation of the wheel body 320. It is easy to form and reduces the gap with the first guide groove 210. In fact, the guide part 230 can also be a semi-cylindrical structure, a trapezoidal column, etc. In addition, the guide part 230 can also be slidably connected to the first guide groove 210 through a matching structure such as a card slot and a card block. In some other embodiments, the guide part 230 can also be columnar, rotate with the rotation of the first sprocket 120, or have a relative rotation speed with the wheel body 320 of the first sprocket 120.

[0047] Reference Figure 3 In the present embodiment, the tensioning block 110, the elastic member 130 and the adjustment structure 140 are symmetrically provided in two groups with the first sprocket 120 as the center. The guide portions 230 are formed at both ends of the first sprocket 120, and the two guide portions 230 extend into the first guide grooves 210 of the two tensioning blocks 110 one by one.

[0048] Specifically, the guide parts 230 at both ends of the first sprocket 120 can be slidably connected to the first guide groove 210 of a tension block 110 in a one-to-one manner, and the guide parts 230 at both ends of the first sprocket 120 can be simultaneously subjected to the restoring force of the elastic member 130, thereby improving the force balance and movement stability of the first sprocket 120 and reducing the deviation of the first sprocket 120. In fact, the tension block 110, the elastic member 130 and the adjustment structure 140 can also be provided in only one set.

[0049] Further, combined with Figure 3 The adjustment structure 140 includes a bolt 240, a limiting block 241 is provided at one end of the bolt 240, a through hole 310 is provided on the box body 100, the bolt 240 is passed through the through hole 310, the limiting block 241 is located at one axial end of the through hole 310 and is used to abut against the part around the through hole 310, the tensioning block 110 is located at the other axial end of the through hole 310 and is threadedly connected to the bolt 240, and the bolt 240 is rotated to make the tensioning block 110 move axially along the bolt 240.

[0050] Specifically, the bolt 240 can move in the through hole 310, the limit block 241 on the bolt 240 and the tension block 110 are respectively arranged on both axial sides of the through hole 310, the tension block 110 is threadedly connected to the bolt 240, and the tension block 110 has a tendency to move away from the through hole 310 under the reaction force of the reset force of the elastic member 130, so that the limit block 241 on the bolt 240 can always be against the part around the through hole 310, and the position of the bolt 240 and the box body 100 remains unchanged. The staff changes the engagement depth of the tension block 110 on the bolt 240 by rotating the bolt 240, so that the tension block 110 moves axially along the bolt 240, thereby adjusting the elastic force of the elastic member 130 and improving the adjustment accuracy of the position of the tension block 110. In addition, the adjustment structure 140 can also be a driving component 720 such as a motor screw or a cylinder, as long as the position of the driving component 720 and the box body 100 remains unchanged and the driving end is connected to the tensioning block 110.

[0051] Furthermore, the first sprocket 120 includes a wheel body 320 and a core shaft 330, the wheel body 320 is connected to the core shaft 330 and can rotate around the core shaft 330, one end of the core shaft 330 is provided with a radially penetrating through hole, the bolt 240 is penetrated in the through hole, the elastic member 130 is nested on the outside of the bolt 240, one end of the elastic member 130 abuts against the tensioning block 110, and the other end abuts against the core shaft 330.

[0052] In this embodiment, the wheel body 320 and the mandrel 330 have a relative rotation speed, the bolt 240 passes through the channel on the box body 100 and the through hole on the mandrel 330, provides support for the bolt 240, improves the positioning stability of the bolt 240, and the elastic member 130 is nested on the bolt 240, so that the elastic member 130 can achieve elastic deformation in the extension direction of the bolt 240, plays a supporting effect for the elastic member 130, and improves the deformation stability of the elastic member 130. It should be noted that the inner diameter of the through hole 310 on the box body 100 and the through hole on the mandrel 330 are both larger than the outer diameter of the bolt 240, ensuring that the bolt 240 can rotate freely, and a limit ring is provided on the mandrel 330, which can be against the box body 100 or the tension block 110, limit the axial displacement of the first sprocket 120, and prevent the first sprocket 120 from being dislocated and falling off. In addition, one end of the bolt 240 may also be rotatably connected to the box body 100 through a bearing or a rivet screw, so that the positions of the bolt 240 and the box body 100 are relatively fixed.

[0053] In this embodiment, a threaded hole is provided on the tensioning block 110, and the threaded hole is connected to one end of the first guide groove 210. The bolt 240 passes through the through hole 310 and the first guide groove 210 in sequence and is threadedly connected to the threaded hole. The elastic member 130 is arranged in the first guide groove 210 and is sleeved on the outer periphery of the bolt 240. The straight line direction of the first sprocket 120 approaching or moving away from the second sprocket 710 is taken as the first preset direction. The extension directions of the first guide groove 210 and the bolt 240 are parallel to the first preset direction, so as to improve the automatic tensioning stability of the chain 610.

[0054] Combination Figure 2 , Figure 4 and Figure 5 In this embodiment, a position mark 510 is provided on the end face of the guide portion 230, and at least three indicator marks 520 are provided on the end face of the tensioning block 110 facing away from the first sprocket 120. The three indicator marks 520 are arranged in sequence on the side positions of the first guide groove 210, and the position mark 510 can point to any one of the indicator marks 520.

[0055] Specifically, the guide portion 230 can slide relatively along the first guide groove 210, and at least three indicator marks 520 are arranged in sequence along the extension direction of the first guide groove 210. The indicator marks 520 include at least a positive position mark and a misalignment mark located on both sides of the positive position mark. When the position mark 510 points to the positive position mark, the tensioning degree of the chain 610 by the first sprocket 120 is reliable. Otherwise, the chain 610 is in a state of being too tight or too loose. This makes it convenient for the staff to directly judge the tensioning degree of the chain 610 by observing the position of the first sprocket 120, and the operation is convenient.

[0056] In this embodiment, the first sprocket 120 includes a wheel body 320 and a core shaft 330. The wheel body 320 is connected to the core shaft 330 by a bearing. The rotation axis of the wheel body 320 coincides with the center line of the core shaft 330. The two ends of the core shaft 330 form a square guide portion 230, so that the guide portion 230 can slide relative to the first guide groove 210 without rotating, so that the staff can clearly identify the direction of the position mark 510. Figure 2 The first sprocket 120 is in a position before adjustment. At this time, the position mark 510 on the guide part 230 points to the outside of the positive position mark. After the first sprocket 120 is put on the chain 610, the position of the first sprocket 120 along the first guide groove 210 is automatically adjusted under the action of the elastic member 130, so that the first sprocket 120 tensions the chain 610. By observing whether the position mark 510 of the guide part 230 points to the positive position mark, if not, the tensioning block 110 is driven to move relative to the box body 100 along the first preset direction through the adjustment structure 140. In this embodiment, the position of the tensioning block 110 is adjusted by twisting the bolt 240 so that the position mark 510 points to the positive position mark. Figure 4In addition, in some other embodiments, the guide portion 230 may also be a structure that rotates synchronously with the first sprocket 120, and the corresponding position mark 510 may be a position mark that is realized by the marker floating or sinking in the liquid.

[0057] Reference Figure 5 In this embodiment, the indicator mark 520 is a color block. The area formed by multiple color blocks is convenient for the staff to directly distinguish different indicator marks 520 and confirm the position of the first sprocket 120.

[0058] In this embodiment, the indicator mark 520 includes a green positive position mark and a red first misalignment mark located on both sides of the positive position mark. The positive position mark is transitioned between the end of the positive position mark close to the wrapping position of the first sprocket 120 and the misalignment mark through a yellow second misalignment mark. When the position mark 510 of the guide portion 230 of the core shaft 330 points to the green area, it indicates that the chain 610 is in a state of appropriate tension. When the position mark 510 of the guide portion 230 of the core shaft 330 points to the yellow area, the staff is required to adjust the position of the tensioning block 110 through the bolt 240. When the position mark 510 of the guide portion 230 of the core shaft 330 points to the red area, the staff is required to stop the line and adjust the position of the tensioning block 110. If the position mark 510 of the guide portion 230 of the core shaft 330 cannot be adjusted to the green area, it can be clearly seen that the chain 610 is deformed and is not suitable for this equipment, and the staff is required to replace the chain 610. Through the setting of the indicator mark 520, it can be clearly observed whether the chain 610 needs to be further tightened, loosened or replaced. In addition, the first guide groove 210 forms a visible opening on the end surface of the tensioning block 110 facing away from the first sprocket 120, the guide portion 230 is located in the visible opening, and the indicator mark 520 is set along the edge of the visible opening to facilitate observation by the staff.

[0059] Furthermore, a second guide groove 220 is provided on the box body 100 , and the tension block 110 can slide relatively along the second guide groove 220 under the drive of the adjustment structure 140 .

[0060] Specifically, the second guide groove 220 provides a guide for the movement of the tension block 110, so that the tension block 110 can move relative to the box body 100 along the second guide groove 220 under the action of the adjustment structure 140, thereby adjusting the distance between the tension block 110 and the first sprocket 120, and improving the activity stability of the tension block 110. In this embodiment, the extension direction of the second guide groove 220, the extension direction of the first guide groove 210, and the first preset direction are parallel to each other, thereby improving the response accuracy of the linear spring 340 and optimizing the spatial layout.

[0061] Reference Figure 6 and Figure 7The present application also provides a chain 610 mechanism, which includes the above-mentioned chain 610 tensioning mechanism, a second sprocket 710 and a chain 610, wherein the second sprocket 710 is disposed on the box 100, and the chain 610 is engaged with the first sprocket 120 and the second sprocket 710. Specifically, the chain 610 mechanism adjusts the spacing between the first sprocket 120 and the second sprocket 710 to achieve automatic tensioning of the chain 610, which is convenient for adjustment and can be applied to a chain 610 conveyor line for bidirectional transport, thereby improving the versatility of the equipment. Moreover, the present application takes the straight line direction of the first sprocket 120 approaching or away from the second sprocket 710 as the first preset direction, and the extension directions of the first guide groove 210, the bolt 240, and the second guide groove 220 are all parallel to the first preset direction, thereby improving the stability of the automatic tensioning of the chain 610.

[0062] The present application also provides a conveying device, which includes the above-mentioned chain 610 mechanism and a driving member 720, wherein the driving member 720 is connected to the first sprocket 120 or the second sprocket 710, and can be used to drive the first sprocket 120 or the second sprocket 710 connected thereto to rotate. In fact, the conveying device is convenient for adjustment by adjusting the spacing between the first sprocket 120 and the second sprocket 710 to achieve automatic tensioning of the chain 610, and can be applied to the chain 610 conveying line of bidirectional transport, thereby improving the versatility of the equipment. In this embodiment, the driving member 720 can drive the second sprocket 710 to rotate, and the first sprocket 120 is used as a driven wheel to achieve automatic tensioning of the chain 610, which is convenient for structural realization.

[0063] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the appended claims.

Claims

1. A chain tensioning mechanism, characterized in that: include: Box; A tensioning block is arranged on the box body; A first sprocket, used to be connected to the second sprocket via a chain; an elastic member connected between the tensioning block and the first sprocket, and when the first sprocket moves in a direction close to or away from the second sprocket, the elastic member can be elastically deformed, and the elastic member is used to drive the first sprocket through elastic force to tension the chain; The adjusting structure is connected to the tensioning block and is configured to drive the tensioning block to move relative to the box body so as to adjust the elastic force of the elastic member.

2. The chain tensioning mechanism according to claim 1, characterized in that: The adjustment structure is configured to drive the tension block to reciprocate relative to the box body along a first preset direction to adjust the distance between the tension block and the first sprocket; The elastic member comprises a linear spring, one end of the linear spring is connected to the tension block, and the other end of the linear spring is connected to the first sprocket, and the elastic force of the linear spring changes in response to the distance.

3. The chain tensioning mechanism according to claim 2, characterized in that: The direction in which the first sprocket approaches or moves away from the second sprocket is parallel to the first preset direction.

4. The chain tensioning mechanism according to claim 1 or 2, characterized in that: A first guide groove is provided on the tensioning block, and a portion of the first sprocket extends into the first guide groove to serve as a guide portion. When the first sprocket moves in a direction approaching or away from the second sprocket, or when the tensioning block moves under the drive of the adjustment structure, the guide portion slides relatively along the first guide groove.

5. The chain tensioning mechanism according to claim 4, characterized in that: Two opposite side surfaces of the guide portion extending along the first guide groove are both in contact with the inner wall of the first guide groove.

6. The chain tensioning mechanism according to claim 5, characterized in that: The guide portion is in a cubic structure.

7. The chain tensioning mechanism according to claim 4, characterized in that: A position mark is provided on the end face of the guide portion, and at least three indicator marks are provided on the end face of the tensioning block facing away from the first sprocket. The three indicator marks are arranged in sequence on the side positions of the first guide groove, and the position mark can point to any one of the indicator marks.

8. The chain tensioning mechanism according to claim 7, characterized in that: The indicator mark is a color block.

9. The chain tensioning mechanism according to claim 4, characterized in that: The tensioning block, the elastic member and the adjusting structure are symmetrically provided in two groups with the first sprocket as the center. The first sprocket is provided with guide parts at both ends. The two guide parts extend into the first guide grooves of the two tensioning blocks one by one.

10. The chain tensioning mechanism according to claim 1, characterized in that: The adjustment structure includes a bolt, a limiting block is provided at one end of the bolt, a through hole is provided on the box body, the bolt is passed through the through hole, the limiting block is located at one axial end of the through hole and is used to abut against the part around the through hole, the tensioning block is located at the other axial end of the through hole and is threadedly connected to the bolt, and the bolt is rotated to make the tensioning block move axially along the bolt.

11. The chain tensioning mechanism according to claim 10, characterized in that: The first sprocket includes a wheel body and a core shaft, the wheel body is connected to the core shaft and can rotate around the core shaft, one end of the core shaft is provided with a radially penetrating through hole, the bolt is passed through the through hole, the elastic member is nested on the outside of the bolt, one end of the elastic member abuts against the tensioning block, and the other end abuts against the core shaft.

12. The chain tensioning mechanism according to claim 1 or 2, characterized in that: The box body is provided with a second guide groove, and the tensioning block can slide relatively along the second guide groove under the drive of the adjustment structure.

13. A chain mechanism, characterized in that: include: The chain tensioning mechanism according to any one of claims 1 to 12; A second sprocket and a chain, wherein the second sprocket is arranged on the box body, and the chain is engaged with the first sprocket and the second sprocket.

14. A conveying device, characterized in that: include: The chain mechanism according to claim 13; The driving member is connected to the first sprocket or the second sprocket, and can be used to drive the first sprocket or the second sprocket connected thereto to rotate.

Images