Chain tensioning mechanism and tensioning method

Abstract

The present invention belongs to the technical field of chain tensioning equipment and discloses a chain tensioning mechanism and tensioning method. The mechanism is provided with a fixed frame; the fixed frame is located outside the entire tensioning mechanism and is used to fix the entire tensioning mechanism on the conveying system; the floating frame is located inside the fixed frame and can move back and forth; the slewing wheel is installed inside the floating frame to make the accumulation chain turn along the slewing wheel; the cylinder is located on one side of the fixed frame, and the cylinder piston rod on the cylinder is connected to the floating frame; the telescopic rails are located on both sides of the floating frame. When the accumulation chain is deformed and elongated, the tension provided by the cylinder causes the floating frame to continue to move forward, driving the telescopic rails on both sides to extend synchronously, so that the travel distance of the accumulation chain is increased, achieving the effect of continuous tension.

Description

Technical Field

[0001] The present invention belongs to the technical field of chain tensioning equipment, and in particular relates to a chain tensioning mechanism and a tensioning method. Background Art

[0002] During operation, conveyor chain chains deform, stretching and causing accumulation. A device is needed to keep the chain taut at all times. In existing conveyor line equipment, the chain runs within a closed loop, with a fixed path and length. When the chain length increases due to deformation, accumulation occurs, making it impossible to maintain tension.

[0003] Through the above analysis, the problems and defects of the existing technology are as follows: in the existing technology, the chain cannot maintain a tensioned state after being stretched, which affects the normal operation of the equipment. Summary of the Invention

[0004] In order to overcome the problems existing in the related art, the disclosed embodiment of the present invention provides a chain tensioning mechanism, which is mainly used in a power-and-free conveyor line.

[0005] The technical solution is as follows: A chain tensioning mechanism is provided with:

[0006] A fixing frame is located outside the entire tensioning mechanism and is used to fix the entire tensioning mechanism on the conveying system;

[0007] The floating frame is located inside the fixed frame and is used for forward and backward movement;

[0008] The slewing wheel is installed inside the floating frame, so that the accumulation chain can turn along the slewing wheel;

[0009] The cylinder is located on one side of the fixed frame, and the cylinder piston rod on the cylinder is connected to the floating frame;

[0010] Telescopic rails are located on both sides of the floating frame.

[0011] Furthermore, guide wheels are installed on both sides of the floating frame, and the guide wheels are located on the fixed frame, so that the floating frame can move back and forth in the fixed frame.

[0012] Furthermore, the telescopic track is composed of two opposite single-sided tracks, one of which is connected to the floating frame and the other is connected to the fixed frame, and is extended or shortened as the floating frame moves.

[0013] Another object of the present invention is to provide a tensioning method for a chain tensioning mechanism, the method being applied to the chain tensioning mechanism, the method comprising:

[0014] When the accumulation chain does not deform and stretch, the cylinder provides a pulling force to the floating frame, causing the floating frame to move forward, driving the rotary wheel fixed to the floating frame to move, so that the accumulation chain passing around the rotary wheel is tightened;

[0015] When the accumulation chain is deformed and elongated, the tension provided by the cylinder causes the floating frame to continue to move forward, driving the telescopic rails on both sides to extend synchronously, increasing the travel distance of the accumulation chain and achieving continuous tension.

[0016] Furthermore, when the accumulation chain does not deform and stretch, the accumulation chain enters the tensioning mechanism through the telescopic track on one side, turns along the rotary wheel, and exits the tensioning mechanism through the telescopic track on the other side.

[0017] Furthermore, the floating frame is equipped with a tension sensor for detecting the current tensioning reaction force of the accumulation chain passing around the rotary wheel, and feeding back the current tensioning reaction force to the control end mounted on the equipment of the external conveyor line. The control end compares the tension of the built-in cylinder with the current tensioning reaction force. When the current tensioning reaction force is less than the tension of the cylinder, the control end continues to control the floating frame to move forward, driving the telescopic rails on both sides to extend synchronously.

[0018] When the control end compares and finds that the current tension reaction force is equal to the tension of the cylinder, the instruction for the floating frame to continue moving forward stops;

[0019] When the floating frame's travel limit distance is detected by the electrical switches set at the front and rear ends of the floating frame's moving direction, the control end receives this signal, issues a floating frame travel limit distance alarm, and notifies the operator to perform timely maintenance.

[0020] Furthermore, the control end compares the tension of the built-in cylinder with the current tension reaction force, including:

[0021] Step 1: Given the irregular distribution point set of the tension plane of the cylinder , numbered in reading order , determine the maximum rectangular area of ​​the irregularly distributed point set ; The divide-and-conquer method is used to convert the irregularly distributed point set of the cylinder tension plane into an unstructured rectangular network;

[0022] Step 2: Number all rectangles in order , record the 4 vertex numbers corresponding to each rectangle and the numbers of the four adjacent rectangles; calculate and save the nonlinear interpolation weight coefficients of all rectangles at once; set The grid spacing in the direction is used to obtain the gridded current tension reaction force node to be inserted;

[0023] Step 3: Select a current tension reaction force grid node to be inserted, and use a rectangle in the rectangular network as the main judgment rectangle. Use the vector product of the current tension reaction force grid node to be inserted and the two vertices of the main judgment rectangle to determine the relative position relationship between the current tension reaction force grid node to be inserted and the rectangular edge; if the current tension reaction force grid node to be inserted is on the left side of the rectangular edge, replace the two vertices of the rectangle in counterclockwise order; if the current tension reaction force grid node to be inserted is on the right side of the rectangular edge, select the rectangle adjacent to the right side of the rectangle as the new main judgment rectangle; when interpolating for the first time, select the rectangle numbered 1 as the initial main judgment rectangle; if the rectangle where the current interpolation node is located is inside the rectangular network, use the rectangle as the main judgment rectangle for the next current tension reaction force node to be inserted; when searching to the boundary of the rectangular network and finding that the current tension reaction force node to be inserted is outside the rectangular network, use the boundary rectangle as the main judgment rectangle for the next current tension reaction force node to be inserted;

[0024] Step 4: repeatedly determine the relationship between the current tension reaction force grid node to be inserted and the rectangular edge, quickly approximate and locate the rectangle where the current tension reaction force grid node to be inserted is located; if the rectangle where the current tension reaction force grid node to be inserted is located can be found in the rectangular grid, the current tension reaction force grid node is interpolated using the nonlinear interpolation weight coefficient of the rectangle; if not found, it means that the current tension reaction force grid node to be inserted is not inside the rectangular grid, and no interpolation is performed;

[0025] Step 5: until the interpolation of all current tensioning reaction force grid nodes is completed and the interpolation of the current tensioning reaction force grid nodes is equal to the tension of the cylinder, the interpolation ends; if the interpolation of the current tensioning reaction force grid nodes is less than the tension of the cylinder, repeat steps 3 to 5 until the interpolation of the current tensioning reaction force grid nodes is equal to the tension of the cylinder, and the control end stops the instruction to control the floating frame to continue moving forward; and output the gridding result to a file in *.grd format.

[0026] In step 2, all rectangles are numbered in sequence. ,include:

[0027] The coordinate numbers of the irregularly distributed point set on the tension plane of the cylinder are used as the vertex numbers of the rectangles in the rectangular mesh. For the numbers of the rectangles adjacent to the four sides of any rectangle, the sequence numbers of the rectangles in the rectangular mesh are used as the numbers. If the rectangle is located at the edge of the rectangular mesh and there are no adjacent rectangles on some sides, the number is set to -1. The positive or negative sign of the number indicates whether the current tension reaction force grid node to be inserted is located inside or outside the rectangular mesh.

[0028] The recording of the four vertex numbers corresponding to each rectangle and the numbers of the four adjacent rectangles includes: if the rectangle is located inside the rectangular net, there are four adjacent rectangles; if the rectangle is located at the edge of the rectangular net, there are 1 or 2 adjacent rectangles.

[0029] Furthermore, the nonlinear interpolation weight coefficients of all rectangles are calculated and saved at once, including:

[0030] Calculate and save the interpolation weights of all rectangles at once ;

[0031] like , then:

[0032] ;

[0033] like , then:

[0034] ;

[0035] Where, Represents the coordinates of the four vertices of the rectangle.

[0036] Furthermore, the rectangle where the current tension reaction force node is to be inserted is quickly approached and located, including:

[0037] (1) Given the current tension reaction force node to be inserted And the main judgment rectangle, where the four vertices are recorded as: ;

[0038] (2) Take the vertex and the current tension reaction force node to be inserted Composition vector and , when the vector product When judging Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; if the vector product If not, proceed to step (3);

[0039] (3) When the vector product When the vertices P2 and P3 are taken together with the current tension reaction force node P to be inserted, a vector is formed. and , when the vector product When judging Is the number of the adjacent rectangle -1? If it is -1, return to step (1); if not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (4);

[0040] (4) When the vector product When , take the vertex and Form a vector with the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5);

[0041] When the vector product When , take the vertex and Form a vector with the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5);

[0042] (5) When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition Get simultaneous satisfaction, at this time The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle where the point is located;

[0043] When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition , and get simultaneous satisfaction, then The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle that the point lies within.

[0044] Combining all the above technical solutions, the beneficial effects of the present invention are as follows: the present invention allows the accumulation chain to enter the tensioning mechanism through the telescopic track on one side, turn along the rotary wheel, and then exit the tensioning mechanism through the telescopic track on the other side. At this time, the cylinder provides a pulling force to the floating frame, causing the floating frame to move forward, driving the rotary wheel fixed on the floating frame to move, so that the accumulation chain bypassing the rotary wheel is tightened to achieve the tensioning effect.

[0045] When the accumulation chain is deformed and elongated, the tension provided by the cylinder causes the floating frame to continue to move forward, driving the telescopic rails on both sides to extend synchronously, increasing the travel distance of the accumulation chain and achieving a continuous tensioning effect.

[0046] The present invention solves the problem of chain deformation within a certain length range and reduces the frequency of inspection and maintenance of the conveyor line chain.

[0047] The present invention can be used in the fields of accumulation and release conveyor lines, rotating parts of motor vehicles, and lifting parts of stereo garages. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure;

[0049] Figure 1 is a schematic diagram of a chain tensioning mechanism provided by an embodiment of the present invention;

[0050] Figure 2 This is a schematic diagram of the telescopic track connection provided by an embodiment of the present invention;

[0051] Figure 3 This is a schematic diagram of the guide wheel connection provided by an embodiment of the present invention;

[0052] Figure 4 This is a schematic diagram of the control terminal signal connection provided by an embodiment of the present invention;

[0053] In the figure: 1. Fixed frame; 2. Floating frame; 3. Rotating wheel; 4. Cylinder; 5. Telescopic track; 6. Guide wheel; 7. Tension sensor; 8. Control terminal; 9. Electrical switch. DETAILED DESCRIPTION

[0054] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0055] The innovation of the chain tensioning mechanism provided by the embodiment of the present invention is that the chain tensioning mechanism is powered by a cylinder, which effectively addresses the problem of chain deformation and elongation, keeps the chain in a tensioned state at all times, and reduces the frequency of inspection and maintenance at the production site.

[0056] Example 1, as Figure 1-Figure 3 As shown, the chain tensioning mechanism provided by the embodiment of the present invention includes: a fixed frame 1, a floating frame 2, a rotary wheel 3, a cylinder 4, a telescopic rail 5, and a guide wheel 6;

[0057] The fixed frame 1 is located on the outside of the entire tensioning mechanism and is responsible for fixing the entire tensioning mechanism in the appropriate position of the conveying system; the floating frame 2 is located on the inside of the fixed frame 1 and can move back and forth; the slewing wheel 3 is installed inside the floating frame 2, so that the accumulation chain can be turned along the slewing wheel 3; the cylinder 4 is located on one side of the fixed frame 1, and the cylinder piston rod on the cylinder 4 is connected to the floating frame 2; the telescopic rail 5 is located on both sides of the floating frame 2.

[0058] Guide wheels 6 are installed on both sides of the floating frame 2, and the guide wheels 6 are located on the fixed frame 1, so that the floating frame 2 can move back and forth in the fixed frame 1; the telescopic track 5 consists of two opposite single-sided tracks, one connected to the floating frame 2 and the other connected to the fixed frame 1, and can be extended or shortened as the floating frame 2 moves.

[0059] As can be seen from the above embodiment, the tension applied by the cylinder to the floating frame is constant, equal in magnitude to the chain's own tension, but in the opposite direction. As the chain's deformation length increases, the floating frame, under the action of the cylinder's tension, moves in the opposite direction of the chain, driving the telescopic rails on either side to extend. This increases the total length of the chain's closed loop, thus tightening the chain. Furthermore, electrical switches can be installed at the front and rear ends of the floating frame. When the floating frame approaches its travel limit, they provide an electrical signal to the monitoring system, notifying the operator to perform prompt maintenance.

[0060] In embodiment 2, the present invention provides a tensioning method for a chain tensioning mechanism, comprising:

[0061] The accumulation chain enters the tensioning mechanism through the telescopic track 5 on one side, turns along the slewing wheel 3, and then exits the tensioning mechanism through the telescopic track 5 on the other side. At this time, the cylinder 4 provides a pulling force to the floating frame 2, so that the floating frame 2 moves forward, driving the slewing wheel 3 fixed on the floating frame 2 to move, so that the accumulation chain bypassing the slewing wheel 3 is tightened, achieving the tensioning effect.

[0062] When the accumulation chain is deformed and elongated, the tension provided by the cylinder 4 causes the floating frame 2 to continue to move forward, driving the telescopic rails 5 on both sides to extend synchronously, thereby increasing the travel distance of the accumulation chain and achieving a continuous tensioning effect.

[0063] In an exemplary embodiment, the tension provided by the cylinder may be pre-set, constant, opposite in direction to the tensioning force of the chain itself, and of the same magnitude.

[0064] Example 3, as a preferred embodiment of the present invention, Figure 4 As shown, the floating frame 2 is equipped with a tension sensor 7 for detecting the current tensioning reaction force of the accumulation chain passing around the rotary wheel 3, and feeding back the current tensioning reaction force to the control terminal 8 mounted on the equipment of the external conveyor line. The control terminal 8 compares the tension of the built-in cylinder 4 with the current tensioning reaction force. When the current tensioning reaction force is less than the tension of the cylinder 4, the control terminal 8 continues to control the floating frame 2 to continue moving forward, driving the telescopic rails 5 on both sides to extend synchronously.

[0065] When the control terminal 8 compares and finds that the current tension reaction force is equal to the tension of the cylinder 4, the instruction for the floating frame 2 to continue moving forward stops;

[0066] When the limit distance of the floating frame 2 is detected by the electrical switches 9 set at the front and rear ends of the floating frame 2 in the moving direction, the control end 8 receives this signal, issues an alarm prompt for the limit distance of the floating frame 2, and notifies the operator to carry out timely maintenance.

[0067] Preferably, the method of comparing the tension of the built-in cylinder 4 by the control end 8 with the current tension reaction force includes:

[0068] Step 1: Given the irregular distribution point set of the tension plane of the cylinder , numbered in reading order , and determine the maximum rectangular area of ​​the irregularly distributed point set: ; The divide-and-conquer method is used to convert the irregularly distributed point set of the cylinder tension plane into an unstructured rectangular network;

[0069] Step 2: Number all rectangles in sequence , and record the 4 vertex numbers corresponding to each rectangle and the numbers of the rectangles adjacent to its four sides; calculate and save the nonlinear interpolation weight coefficients of all rectangles at once; set The grid spacing in the direction is used to obtain the gridded current tension reaction force node to be inserted;

[0070] Step 3: Select a current tension reaction force grid node to be inserted, and use a rectangle in the rectangular network as a main judgment rectangle. Use the vector product of the current tension reaction force grid node to be inserted and the two vertices of the main judgment rectangle to determine the relative position relationship between the current tension reaction force grid node to be inserted and the rectangle edge.

[0071] Step 4: repeatedly determine the relationship between the current tension reaction force grid node to be inserted and the rectangular edge, quickly approximate and locate the rectangle where the current tension reaction force grid node to be inserted is located; if the rectangle where the current tension reaction force grid node to be inserted is located can be found in the rectangular mesh, the current tension reaction force grid node is interpolated using the nonlinear interpolation weight coefficient of the rectangle; if not found, it means that the current tension reaction force grid node to be inserted is not inside the rectangular mesh, and no interpolation is performed;

[0072] Step 5, repeat step 4 until the interpolation of all current tensioning reaction force grid nodes is completed. If the interpolation of the current tensioning reaction force grid node is equal to the tension of cylinder 4, the interpolation ends. If the interpolation of the current tensioning reaction force grid node is less than the tension of cylinder 4, repeat steps 3 to 5 until the interpolation of the current tensioning reaction force grid node is equal to the tension of cylinder 4, indicating that the instruction of the control terminal 8 to control the floating frame 2 to continue moving forward has stopped; and output the gridding result to the file in *.grd format.

[0073] In step 2, all rectangles are numbered in sequence. , and record the 4 vertex numbers corresponding to each rectangle and the numbers of the rectangles adjacent to its four sides, including:

[0074] The coordinate numbers of the irregularly distributed point set on the tension plane of the cylinder are used as the vertex numbers of the rectangles in the rectangular mesh. For the numbers of the rectangles adjacent to the four sides of any rectangle, the sequence numbers of the rectangles in the rectangular mesh are used as the numbers. If the rectangle is located at the edge of the rectangular mesh and there are no adjacent rectangles on some sides, the number is set to -1. The positive or negative sign of the number indicates whether the current tension reaction force grid node to be inserted is located inside or outside the rectangular mesh.

[0075] In step 2, the recording of the four vertex numbers corresponding to each rectangle and the numbers of the rectangles adjacent to its four sides includes:

[0076] If the rectangle is inside the rectangular net, there are 4 adjacent rectangles; if the rectangle is on the edge of the rectangular net, there are 1 or 2 adjacent rectangles.

[0077] In step 2, the calculation and saving of nonlinear interpolation weight coefficients of all rectangles at once includes:

[0078] Calculate and save the interpolation weights of all rectangles at once ;

[0079] like , then:

[0080] ;

[0081] like , then:

[0082] ;

[0083] Where, Represents the coordinates of the four vertices of the rectangle.

[0084] The method of using a certain rectangle in the rectangular network as a main judgment rectangle includes:

[0085] When interpolating for the first time, the rectangle numbered 1 is selected as the initial main judgment rectangle;

[0086] If the rectangle where the current interpolation node is located is inside the rectangular network, the rectangle is used as the main judgment rectangle for the next node to be interpolated for the current tension reaction force;

[0087] When searching the rectangular network boundary and finding that the current tension reaction force node to be inserted is located outside the rectangular network, the boundary rectangle is used as the main judgment rectangle for the next current tension reaction force node to be inserted.

[0088] In step 3, the step of using the vector product of the current tension reaction force grid node to be inserted and two vertices of the main judgment rectangle to determine the relative position relationship between the current tension reaction force grid node to be inserted and the edge of the rectangle includes:

[0089] If the current tension reaction force grid node to be inserted is on the left side of the rectangle, the two vertices of the rectangle are replaced in a counterclockwise order; if the current tension reaction force grid node to be inserted is on the right side of the rectangle, the rectangle adjacent to the right side of the rectangle is selected as the new main judgment rectangle;

[0090] In step 4, the process of rapidly approaching and locating the rectangle where the current tension reaction force node is to be inserted includes:

[0091] (1) Given the current tension reaction force node to be inserted And the main judgment rectangle, where the four vertices are recorded as: ;

[0092] (2) Take the vertex and the current tension reaction force node to be inserted Composition vector and , when the vector product When judging Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; if the vector product If not, proceed to step (3);

[0093] (3) When the vector product When the vertices P2 and P3 are taken together with the current tension reaction force node P to be inserted, a vector is formed. and , when the vector product When judging Is the number of the adjacent rectangle -1? If it is -1, return to step (1); if not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (4);

[0094] (4) When the vector product When , take the vertex and Form a vector with the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5);

[0095] When the vector product When , take the vertex and Form a vector with the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5);

[0096] (5) When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition Get simultaneous satisfaction, at this time The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle where the point is located;

[0097] When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition , and get simultaneous satisfaction, then The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle that the point lies within.

[0098] The above embodiment demonstrates that the control terminal 8 of the present invention compares the tension of the built-in cylinder 4 with the current tensioning reaction force. When the current tensioning reaction force is less than the tension of the cylinder 4, the control terminal 8 continues to control the forward movement of the floating frame 2, driving the telescopic rails 5 on both sides to extend synchronously. If, after comparison, the control terminal 8 determines that the current tensioning reaction force equals the tension of the cylinder 4, the instruction for the floating frame 2 to continue moving forward ceases. When the electrical switches 9 provided at the front and rear ends of the floating frame 2 detect the limit of its travel, the control terminal 8 receives this signal and issues an alarm prompting the operator to promptly perform maintenance. This enables intelligent chain control, saves labor costs, and improves production efficiency.

[0099] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0100] The above description is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with this technical field within the technical scope disclosed by the present invention and within the spirit and principles of the present invention should be covered by the scope of protection of the present invention.

Claims

1. A tensioning method for a chain tensioning mechanism, characterized in that: The mechanism is provided with: a fixed frame (1), located outside the entire tensioning mechanism, used to fix the entire tensioning mechanism on the conveying system; a floating frame (2), located inside the fixed frame (1), used to move forward and backward; a rotary wheel (3), installed inside the floating frame (2), so that the accumulation chain is turned along the rotary wheel (3); a cylinder (4), located on one side of the fixed frame (1), and the cylinder piston rod on the cylinder (4) is connected to the floating frame (2); and a telescopic rail (5), located on both sides of the floating frame (2); When the accumulation chain does not deform and stretch, a pulling force is provided to the floating frame (2) through the cylinder (4), so that the floating frame (2) moves forward, driving the rotary wheel (3) fixed on the floating frame (2) to move, so that the accumulation chain passing around the rotary wheel (3) is tightened; When the accumulation chain is deformed and stretched, the tension provided by the cylinder (4) causes the floating frame (2) to continue to move forward, driving the telescopic rails (5) on both sides to extend synchronously, thereby increasing the travel distance of the accumulation chain and achieving continuous tension; The floating frame (2) is equipped with a tension sensor (7) for detecting the current tension reaction force of the accumulation chain bypassing the rotary wheel (3), and feeds back the current tension reaction force to the control end (8) mounted on the equipment of the external conveyor line. The control end (8) compares the tension of the built-in cylinder (4) with the current tension reaction force. When the current tension reaction force is less than the tension of the cylinder (4), the control end (8) continues to regulate the floating frame (2) to continue moving forward, driving the telescopic rails (5) on both sides to extend synchronously. When the control end (8) compares and finds that the current tensioning reaction force is equal to the tension of the cylinder (4), the instruction for the floating frame (2) to continue moving forward stops; When the floating frame (2) reaches its travel limit distance through the electrical switches (9) provided at the front and rear ends of the floating frame (2) in its moving direction, the control end (8) receives the signal and issues an alarm prompting the floating frame (2) to notify the operator to promptly perform maintenance. The control end (8) compares the tension of the built-in cylinder (4) with the current tension reaction force, including: Step 1: Given the irregular distribution point set of the tension plane of the cylinder , numbered in reading order , determine the maximum rectangular area of ​​the irregularly distributed point set ; The divide-and-conquer method is used to convert the irregularly distributed point set of the cylinder tension plane into an unstructured rectangular network; Step 2: Number all rectangles in order , record the 4 vertex numbers corresponding to each rectangle and the numbers of the four adjacent rectangles; calculate and save the nonlinear interpolation weight coefficients of all rectangles at once; set The grid spacing in the direction is used to obtain the gridded current tension reaction force node to be inserted; Step 3: Select a current tension reaction force grid node to be inserted, and use a rectangle in the rectangular network as the main judgment rectangle. Use the vector product of the current tension reaction force grid node to be inserted and the two vertices of the main judgment rectangle to determine the relative position relationship between the current tension reaction force grid node to be inserted and the rectangular edge; if the current tension reaction force grid node to be inserted is on the left side of the rectangular edge, replace the two vertices of the rectangle in counterclockwise order; if the current tension reaction force grid node to be inserted is on the right side of the rectangular edge, select the rectangle adjacent to the right side of the rectangle as the new main judgment rectangle; when interpolating for the first time, select the rectangle numbered 1 as the initial main judgment rectangle; if the rectangle where the current interpolation node is located is inside the rectangular network, use the rectangle as the main judgment rectangle for the next current tension reaction force node to be inserted; when searching to the boundary of the rectangular network and finding that the current tension reaction force node to be inserted is outside the rectangular network, use the boundary rectangle as the main judgment rectangle for the next current tension reaction force node to be inserted; Step 4: repeatedly determine the relationship between the current tension reaction force grid node to be inserted and the rectangular edge, quickly approximate and locate the rectangle where the current tension reaction force grid node to be inserted is located; if the rectangle where the current tension reaction force grid node to be inserted is located can be found in the rectangular grid, the current tension reaction force grid node is interpolated using the nonlinear interpolation weight coefficient of the rectangle; if not found, it means that the current tension reaction force grid node to be inserted is not inside the rectangular grid, and no interpolation is performed; Step 5: until the interpolation of all current tensioning reaction force grid nodes is completed, and the interpolation of the current tensioning reaction force grid nodes is equal to the tension of the cylinder (4), the interpolation ends; if the interpolation of the current tensioning reaction force grid nodes is less than the tension of the cylinder (4), steps 3 to 5 are repeated until the interpolation of the current tensioning reaction force grid nodes is equal to the tension of the cylinder (4), and the control end (8) stops the instruction to control the floating frame (2) to continue moving forward; and the gridding result is output to a file in *.grd format.

2. The tensioning method of the chain tensioning mechanism according to claim 1, characterized in that: When the accumulation chain does not deform and stretch, the accumulation chain enters the tensioning mechanism through the telescopic track (5) on one side, turns along the rotary wheel (3), and exits the tensioning mechanism through the telescopic track (5) on the other side.

3. The tensioning method of the chain tensioning mechanism according to claim 2, characterized in that: In step 2, all rectangles are numbered in sequence. ,include: The coordinate numbers of the irregularly distributed point set on the tension plane of the cylinder are used as the vertex numbers of the rectangles in the rectangular mesh. For the numbers of the rectangles adjacent to the four sides of any rectangle, the sequence numbers of the rectangles in the rectangular mesh are used as the numbers. If the rectangle is located at the edge of the rectangular mesh and there are no adjacent rectangles on some sides, the number is set to -1. The positive or negative sign of the number indicates whether the current tension reaction force grid node to be inserted is located inside or outside the rectangular mesh. The recording of the four vertex numbers corresponding to each rectangle and the numbers of the four adjacent rectangles includes: if the rectangle is located inside the rectangular net, there are four adjacent rectangles; if the rectangle is located at the edge of the rectangular net, there are 1 or 2 adjacent rectangles.

4. The tensioning method of the chain tensioning mechanism according to claim 3, characterized in that: In step 2, the nonlinear interpolation weight coefficients of all rectangles are calculated and saved at once, including: Calculate and save the interpolation weights of all rectangles at once ; like Then we have: ； like , then: ； Where, Represents the coordinates of the four vertices of the rectangle.

5. The tensioning method of the chain tensioning mechanism according to claim 4, characterized in that: In step 3, quickly approach and locate the rectangle where the current tension reaction force node is to be inserted, including: (1) Given the current tension reaction force node to be inserted And the main judgment rectangle, where the four vertices are recorded as: ; (2) Take the vertex and the current tension reaction force node to be inserted Composition vector and , when the vector product When, judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; if the vector product If not, proceed to step (3); (3) When the vector product When the vertices P2 and P3 are taken together with the current tension reaction force node P to be inserted, a vector is formed. and , when the vector product When, judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1); if not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (4); (4) When the vector product When , take the vertex and The vector of the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5); When the vector product , then take the vertex and Form a vector with the current tension reaction force node P to be inserted and , when the vector product ,judge Is the number of the adjacent rectangle -1? If it is -1, return to step (1). If not, The rectangle with adjacent sides is used as the new main judgment rectangle, and step (2) is repeated; vector product If not, proceed to step (5); (5) When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition Get simultaneous satisfaction, at this time The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle where the point is located; When the vector product When the main judgment rectangle and the vector determined by the current tension reaction force node P to be inserted , the vector product condition , and get simultaneous satisfaction, then The point is inside or on one of the four sides of the main judgment rectangle. The main judgment rectangle is The rectangle that the point lies within.

6. The tensioning method of the chain tensioning mechanism according to claim 5, characterized in that: Guide wheels (6) are installed on both sides of the floating frame (2), and the guide wheels (6) are located on the fixed frame (1), so that the floating frame (2) can move forward and backward in the fixed frame (1).

7. The tensioning method of the chain tensioning mechanism according to claim 6, characterized in that: The telescopic track (5) consists of two opposite single-sided tracks, one of which is connected to the floating frame (2) and the other is connected to the fixed frame (1), and is extended or shortened as the floating frame (2) moves.

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