Automatically adjustable tie rod device and stacker-reclaimer

Abstract

This invention discloses an automatically adjustable length tie rod device and a stacker-reclaimer. The automatically adjustable length tie rod device includes tie rod assemblies, a detection element, and a control element. There are at least two tie rod assemblies arranged in parallel. Each tie rod assembly includes a first connecting rod and a second connecting rod, which are movably connected. The detection element is connected to each tie rod assembly to obtain the force value of each tie rod assembly. The control element is connected to both the detection element and each tie rod assembly to adjust the movement distance of the first connecting rod relative to the second connecting rod based on the detection information from the detection element. The automatically adjustable length tie rod device of this invention ensures that each tie rod assembly connecting the stacker-reclaimer's forearm maintains a consistent length and uniform force during operation, thereby improving the stability of the stacker-reclaimer's forearm installation and preventing accidents during operation.

Description

Technical Field

[0001] This invention relates to the field of stacker-reclaimer technology, specifically to a tie rod device with automatically adjustable length and a stacker-reclaimer. Background Technology

[0002] In bulk material transportation operations, stacker-reclaimers are highly efficient loading and unloading machines that can both stack and reclaim materials. They are typically installed in storage sites such as ports, docks, steel plants, and coal storage yards.

[0003] In a stacker-reclaimer, wheels are installed at the front end of the boom. The rotation of the wheels digs materials onto the conveyor belt on the boom. The rear end of the boom is hinged to the column. Due to its large length, the boom also needs to be pulled diagonally by tie rods to be stably connected to the column.

[0004] In related technologies, tie rods are usually installed on both sides of the boom using threaded connections. During long-term use, it is difficult for the stress on the tie rods on both sides of the boom to be consistent, which may cause stress failure of one tie rod, resulting in the boom falling off and affecting the safe use of the stacker-reclaimer. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an automatically adjustable length tie rod device in view of the defects and deficiencies of the prior art. The automatically adjustable length tie rod device can ensure that each tie rod component connected to the stacker-reclaimer forearm maintains the same length and the same force during operation, thereby improving the stability of the stacker-reclaimer forearm installation and avoiding accidents during the operation of the stacker-reclaimer.

[0006] The present invention also proposes a stacker-reclaimer.

[0007] The automatically adjustable length pull rod device according to an embodiment of the present invention includes: a pull rod assembly, wherein there are at least two pull rod assemblies arranged in parallel, each pull rod assembly including a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being movably connected; a detection element connected to each pull rod assembly to obtain the force value of each pull rod assembly; and a control element connected to the detection element and to each pull rod assembly to adjust the moving distance of the first connecting rod relative to the second connecting rod according to the detection information of the detection element.

[0008] According to an embodiment of the present invention, an automatically adjustable length tie rod device comprises at least two tie rod assemblies arranged in parallel. Each tie rod assembly includes a first connecting rod and a second connecting rod. The first connecting rod is hinged to the column of the stacker-reclaimer, and the second connecting rod is hinged to the forearm of the stacker-reclaimer. The first and second connecting rods are movably connected. A detection element is connected to each tie rod assembly to obtain the force value of each tie rod assembly. A control element is connected to the detection element and to each tie rod assembly to adjust the moving distance of the first connecting rod relative to the second connecting rod, i.e., the length of the tie rod assembly, according to the detection information of the detection element. Thus, during operation, each tie rod assembly connecting the forearm of the stacker-reclaimer can maintain a consistent length and the same force, improving the stability of the installation of the forearm of the stacker-reclaimer and preventing accidents from occurring during operation.

[0009] In some embodiments, the first connecting rod and the second connecting rod are connected by a connector, the connector including a fixed plate and a movable plate. The fixed plate is connected to the end of the first connecting rod facing the second connecting rod, and the movable plate is connected to the end of the second connecting rod facing the first connecting rod. The fixed plate has an elongated hole extending along the length direction of the first connecting rod, and the movable plate has a circular hole, the width of which is the same as the diameter of which is the circular hole. The fixed plate and the movable plate are connected by a first pin that passes through the elongated hole and the circular hole in sequence, and the movement of the first pin within the elongated hole can drive the movable plate to move.

[0010] In some embodiments, the control component includes a drive motor, which is fixed to the fixed plate. A clamping plate is provided at the front end of the output shaft of the drive motor, and the clamping plate is connected to the first pin.

[0011] In some embodiments, the clamping plate has an arc-shaped groove on the side facing the first pin, and the inner wall of the arc-shaped groove is in contact with the outer wall of the first pin.

[0012] In some embodiments, there are two fixed plates, which are symmetrically arranged on both sides of the first connecting rod. There are also two movable plates, which are symmetrically arranged on both sides of the second connecting rod, and the two movable plates are respectively located outside the two fixed plates. The first pin passes through the two fixed plates and the two movable plates.

[0013] In some embodiments, the first pin is provided with stop plates at both ends, and the stop plates are in contact with the outer side of the movable plate.

[0014] In some embodiments, a second pin is provided at one end of the two fixed plates away from the movable plate. The second pin has a first insertion hole that extends through the length of the first connecting rod, and the first connecting rod is fitted into the first insertion hole. A third pin is provided at one end of the two movable plates away from the fixed plate. The third pin has a second insertion hole that extends through the length of the first connecting rod, and the second connecting rod is fitted into the second insertion hole.

[0015] In some embodiments, the detection element is a tension sensor, which is disposed on the first connecting rod and / or the second connecting rod.

[0016] The stacker-reclaimer of this invention includes: a chassis and a frame mounted on the chassis, wherein the uprights and forearms of the frame are connected to each other by an automatically adjustable length tie rod device as described in the above embodiments.

[0017] According to the embodiments of the present invention, the stacker-reclaimer connects the uprights and forearm of the stacker-reclaimer frame by using the automatically adjustable tie rod device described in the above embodiments. The forearm of the stacker-reclaimer has good installation stability and the stacker-reclaimer has high operational safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an automatically adjustable length pull rod device according to an embodiment of the present invention.

[0019] Figure 2 This is a side view of an automatically adjustable length pull rod device according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the fixed plate and movable plate of the automatically adjustable length tie rod device according to an embodiment of the present invention.

[0021] Figure label:

[0022] 1. Tie rod assembly; 11. First connecting rod; 12. Second connecting rod;

[0023] 2. Inspection items;

[0024] 3. Control components; 31. Drive motor; 32. Clamping plate;

[0025] 4. Connecting parts; 41. Fixing plate; 411. Oblong hole; 42. Movable plate; 412. Round hole; 43. First pin; 44. Stop plate; 45. Second pin; 46. First insertion hole; 47. Third pin; 48. Second insertion hole. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] like Figure 1-3 As shown, the automatically adjustable length pull rod device of this embodiment includes a pull rod assembly 1, a detection component 2, and a control component 3.

[0028] Specifically, there are at least two pull rod assemblies 1, arranged in parallel. Each pull rod assembly 1 includes a first connecting rod 11 and a second connecting rod 12, which are movably connected. A detection element 2 is connected to each pull rod assembly 1 to obtain the force value of each pull rod assembly 1. A control element 3 is connected to the detection element 2 and to each pull rod assembly 1 to adjust the moving distance of the first connecting rod 11 relative to the second connecting rod 12 according to the detection information of the detection element 2.

[0029] It should be noted that in a stacker-reclaimer, the length of the tie rod is related to the stress on it. When the stress on the tie rods on both sides of the stacker-reclaimer's forearm is inconsistent, it indicates a difference in the length of the tie rods on both sides. In this case, since the tie rod length cannot be adjusted arbitrarily in traditional technology, the tie rod on one side of the stacker-reclaimer's forearm may suffer stress failure due to excessive stress. However, in the automatically adjustable tie rod device of this application, multiple tie rod assemblies 1 can be symmetrically installed on both sides of the forearm. Among them, the first connecting rod 11 is hinged to the column of the stacker-reclaimer, and the second connecting rod 12... Hinged with the forearm of the stacker-reclaimer, the detection element 2 can be installed on the second connecting rod 12 to detect the force on the second connecting rod 12 during the transportation operation and transmit it to the control element 3. The control element 3 can then compare and analyze the force on different second connecting rods 12, and adjust the moving distance of the first connecting rod 11 relative to the second connecting rod 12 accordingly, that is, the length of the tie rod assembly 1. This ensures that each tie rod assembly 1 maintains a consistent length and the same force during operation, improving the stability of the stacker-reclaimer forearm installation and preventing accidents during the operation of the stacker-reclaimer.

[0030] Understandably, adjusting multiple tie rod assemblies 1 simultaneously can reduce the magnitude of length variation of each tie rod assembly 1 while ensuring that the length of each tie rod assembly 1 is consistent. For example, when two tie rod assemblies 1 need to be adjusted in length, the tie rod assembly 1 that is too long can be gradually shortened, and the tie rod assembly 1 that is too short can be gradually lengthened, until the lengths of the two tie rod assemblies 1 are consistent. This avoids excessive length variation of the tie rod assembly 1 during the adjustment process, which could affect the safety of the stacker-reclaimer's transportation operation.

[0031] According to an embodiment of the present invention, an automatically adjustable length tie rod device comprises at least two tie rod assemblies arranged in parallel. Each tie rod assembly includes a first connecting rod and a second connecting rod. The first connecting rod is hinged to the column of the stacker-reclaimer, and the second connecting rod is hinged to the forearm of the stacker-reclaimer. The first and second connecting rods are movably connected. A detection element is connected to each tie rod assembly to obtain the force value of each tie rod assembly. A control element is connected to the detection element and to each tie rod assembly to adjust the moving distance of the first connecting rod relative to the second connecting rod, i.e., the length of the tie rod assembly, according to the detection information of the detection element. Thus, during operation, each tie rod assembly connecting the forearm of the stacker-reclaimer can maintain a consistent length and the same force, improving the stability of the installation of the forearm of the stacker-reclaimer and preventing accidents from occurring during operation.

[0032] Furthermore, such as Figure 1-3 As shown, the first connecting rod 11 and the second connecting rod 12 are connected by a connector 4. The connector 4 includes a fixed plate 41 and a movable plate 42. The fixed plate 41 is connected to the end of the first connecting rod 11 facing the second connecting rod 12, and the movable plate 42 is connected to the end of the second connecting rod 12 facing the first connecting rod 11. The fixed plate 41 has an elongated hole 411 extending along the length direction of the first connecting rod 11, and the movable plate 42 has a circular hole 421. The width of the elongated hole 411 is the same as the diameter of the circular hole 421. The fixed plate 41 and the movable plate 42 are connected by a first pin 43 that passes through the elongated hole 411 and the circular hole 421 in sequence. The movement of the first pin 43 within the elongated hole 411 can drive the movable plate 42 to move.

[0033] In other words, the right end of the first connecting rod 11 is provided with a fixing plate 41 (e.g., Figure 1 (As shown in the left and right directions), the left end of the second connecting rod 12 is provided with a movable plate 42. The movable plate 42 is connected to the fixed plate 41 through the first pin 43. Pushing and pulling the first pin 43 can drive the movable plate 42 to move relative to the fixed plate 41, thereby realizing the movable connection between the first connecting rod 11 and the second connecting rod 12.

[0034] It is understandable that the length of the elongated hole 411 is the range of movement of the first pin 43. In some embodiments, the length of the elongated hole 411 is 5%-10% of the length of the first connecting rod 11 to avoid the range being too large and affecting the structural strength of the fixing plate 41.

[0035] It is understood that the width of the elongated hole 411 on the fixed plate 41 and the diameter of the round hole 421 on the movable plate 42 should be consistent with the outer diameter of the first pin 43, thereby preventing the first pin 43 from shaking during movement and affecting the stability of the pull rod assembly 1. In some embodiments, the movable plate 42 is not limited to having a round hole 421, and the fixed plate 41 is not limited to having an elongated hole 411. For example, the movable plate 42 can be provided with a square hole, and the fixed plate 41 can be provided with a long strip hole. The width of the long strip hole is consistent with that of the square hole. In this case, the first pin 43 can be a square post that fits in the square hole. Pushing and pulling the square post can drive the movable plate 42 to move relative to the fixed plate 41.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, the control component 3 includes a drive motor 31, which is fixed on a fixed plate 41. A clamping plate 32 is provided at the front end of the output shaft of the drive motor 31, and the clamping plate 32 is connected to the first pin 43.

[0037] It is understandable that the drive motor 31 drives the output shaft to rotate forward, which can drive the clamping plate 32 to push the first pin 43. Conversely, the drive motor 31 drives the output shaft to rotate in reverse, which can drive the clamping plate 32 to pull the first pin 43, thereby realizing the movement of the first pin 43 within the elongated hole 411.

[0038] It should be noted that the power of the drive motor 31 should be selected according to the gravity of the stacker-reclaimer forearm to avoid the drive motor 31 being too weak and affecting the moving efficiency of the first pin shaft 43. In some embodiments, the power of the drive motor 31 is between 20KW and 50KW.

[0039] Furthermore, the clamping plate 32 has an arc-shaped groove on the side facing the first pin 43, and the inner wall of the arc-shaped groove fits against the outer wall of the first pin 43.

[0040] Understandably, the arc groove improves the tightness of the connection between the clamping plate 32 and the first pin 43. In some embodiments, the clamping plate 32 is an annular sleeve with the same outer diameter as the first pin 43. The annular sleeve is fitted onto the outer wall of the first pin 43 to achieve the connection with the first pin 43.

[0041] Preferably, such as Figure 1 As shown, there are two fixed plates 41, which are symmetrically arranged on both sides of the first connecting rod 11. There are two movable plates 42, which are symmetrically arranged on both sides of the second connecting rod 12. The two movable plates 42 are respectively arranged on the outside of the two fixed plates 41. The first pin 43 passes through the two fixed plates 41 and the two movable plates 42.

[0042] In other words, the left end of the first connecting rod 11 has two symmetrically arranged fixed plates 41, and the right end of the second connecting rod 12 has two symmetrically arranged movable plates 42. The first pin 43 passes through both the two fixed plates 41 and the two movable plates 42 to connect the first connecting rod 11 and the second connecting rod 12. Thus, the symmetrically arranged fixed plates 41 and movable plates 42 enhance the balance of the connection between the first connecting rod 11 and the second connecting rod 12.

[0043] Furthermore, such as Figure 1 As shown, the first pin 43 has stop plates 44 at both ends, and the stop plates 44 are in contact with the outer side of the movable plate 42.

[0044] Understandably, the stop plate 44 can prevent the first pin 43 from falling off during movement and improve the stability of the first pin 43 installation. In some embodiments, the stop plate 44 is connected to the first pin 43 by bolts, which facilitates disassembly and maintenance.

[0045] Furthermore, such as Figure 1 and Figure 2 As shown, a second pin 45 is provided at one end of the two fixed plates 41 away from the movable plate 42. The second pin 45 has a first insertion hole 46 that extends through the first connecting rod 11 along its length direction. The first connecting rod 11 fits into the first insertion hole 46. A third pin 47 is provided at one end of the two movable plates 42 away from the fixed plate 41. The third pin 47 has a second insertion hole 48 that extends through the first connecting rod 11 along its length direction. The second connecting rod 12 fits into the second insertion hole 48.

[0046] In other words, the first insertion hole 46 on the second pin 45 improves the tightness of the connection between the first connecting rod 11 and the fixed plate 41, and the second insertion hole 48 on the third pin 47 improves the tightness of the connection between the second connecting rod 12 and the movable plate 42. In some embodiments, elastic clips are provided in the first insertion hole 46 and the second insertion hole 48, thereby increasing the friction between the first connecting rod 11 and the second connecting rod 12 in the first insertion hole 46 and the second insertion hole 48.

[0047] Furthermore, such as Figure 2 As shown, the detection component 2 is a tension sensor, which is located on the first connecting rod 11 and / or the second connecting rod 12.

[0048] It is understandable that the forearm of the stacker-reclaimer will generate a pulling force on the tie rod assembly 1 when lifting heavy objects. The tension sensor installed on the first connecting rod 11 or the second connecting rod 12 can quickly detect the magnitude of the tension on the tie rod assembly 1 and transmit it to the control unit 3. In some embodiments, the operator's room of the stacker-reclaimer is equipped with an instrument that can display the value of the tension sensor, so that the staff can understand the operating status of the tie rod assembly 1 in a timely manner.

[0049] Preferably, the tension sensor is either a strain gauge tension sensor or a piezoresistive tension sensor, thereby improving the detection efficiency and accuracy of the tension sensor.

[0050] The stacker-reclaimer of this invention includes: a chassis and a frame mounted on the chassis, wherein the uprights and forearm of the frame are connected to each other by an automatically adjustable length tie rod device as described in the above embodiment.

[0051] According to the embodiments of the present invention, the stacker-reclaimer connects the uprights and forearm of the stacker-reclaimer frame by using the automatically adjustable tie rod device described in the above embodiments. The forearm of the stacker-reclaimer has good installation stability and the stacker-reclaimer has high operational safety.

[0052] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pull rod device with automatically adjustable length, characterized in that, include: A pull rod assembly, wherein there are at least two pull rod assemblies arranged in parallel, and each pull rod assembly includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being movably connected; A detection element is connected to each of the tie rod assemblies to obtain the force value of each tie rod assembly; A control element is connected to the detection element and to each of the tie rod assemblies to adjust the moving distance of the first connecting rod relative to the second connecting rod according to the detection information of the detection element. The first connecting rod and the second connecting rod are connected by a connector, which includes a fixed plate and a movable plate. The fixed plate is connected to the end of the first connecting rod facing the second connecting rod, and the movable plate is connected to the end of the second connecting rod facing the first connecting rod. The fixed plate has an elongated hole extending along the length of the first connecting rod, and the movable plate has a circular hole, the width of which is the same as the diameter of which is the circular hole. The fixed plate and the movable plate are connected by a first pin that passes through the elongated hole and the circular hole in sequence, and the movement of the first pin within the elongated hole can drive the movable plate to move. The fixed plate has two parts, which are symmetrically arranged on both sides of the first connecting rod. The movable plate has two parts, which are symmetrically arranged on both sides of the second connecting rod, and the two movable plates are respectively arranged on the outside of the two fixed plates. The first pin passes through the two fixed plates and the two movable plates. A second pin is provided at one end of each of the two fixed plates away from the movable plate. The second pin has a first insertion hole that extends through the length of the first connecting rod, and the first connecting rod is fitted into the first insertion hole. A third pin is provided at one end of each of the two movable plates away from the fixed plate. The third pin has a second insertion hole that extends through the length of the first connecting rod, and the second connecting rod is fitted into the second insertion hole.

2. The automatically adjustable length pull rod device according to claim 1, characterized in that, The control component includes a drive motor, which is fixed on the fixed plate. A clamping plate is provided at the front end of the output shaft of the drive motor, and the clamping plate is connected to the first pin.

3. The automatically adjustable length pull rod device according to claim 2, characterized in that, The clamping plate has an arc-shaped groove on the side facing the first pin, and the inner wall of the arc-shaped groove fits against the outer wall of the first pin.

4. The automatically adjustable length pull rod device according to claim 1, characterized in that, The first pin has stop plates at both ends, and the stop plates are in contact with the outer side of the movable plate.

5. The automatically adjustable length pull rod device according to claim 1, characterized in that, The detection component is a tension sensor, which is mounted on the first connecting rod and / or the second connecting rod.

6. A stacker-reclaimer, characterized in that, include: The chassis and the frame mounted on the chassis, wherein the uprights and forearms of the frame are connected to each other by an automatically adjustable length tie rod device according to any one of claims 1-5.

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