Telescopic arm forklift and adjustable pipeline tensioning device thereof

Abstract

The utility model discloses an adjustable pipeline tensioning device which comprises a telescopic arm frame and further comprises a mounting seat connected with the tail end of the telescopic arm frame, a driving mechanism arranged on the mounting seat, a tensioning mechanism in power connection with the output end of the driving mechanism and a pipeline wound on the tensioning mechanism. The driving mechanism is used for driving the tensioning mechanism to linearly move in the preset direction so as to tension the pipeline. Thus, when the tensioning force of the pipeline needs to be adjusted, the linear motion distance of the tensioning mechanism can be controlled only by controlling the driving mechanism, and then the tensioning force of the pipeline is accurately controlled; the driving mechanism is arranged on the mounting seat, and the mounting seat is connected to the tail end of the telescopic boom and is exposed out of the telescopic boom, so that the driving mechanism can be conveniently controlled and operated, and the problems of inconvenience in later adjustment, limited operation space and the like due to the fact that the roller is mounted in the telescopic boom are solved. The utility model further discloses the telescopic arm forklift which has the advantages as mentioned above.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an adjustable pipeline tensioning device.

[0002] The utility model also relates to a telescopic arm forklift. Background Art

[0003] A telescopic forklift is a multi-purpose forklift with a telescopic arm on the frame. The front end of the telescopic arm can be equipped with a variety of attachments to achieve a variety of operations.

[0004] There are many kinds of pipelines installed inside the telescopic boom, such as cables, signal cables, liquid hoses, gas hoses, etc. During the operation of the telescopic boom forklift, the telescopic boom will frequently perform telescopic movements, and the pipelines connected to the telescopic boom will also perform synchronous telescopic movements. Since the pipelines are usually designed to be relatively long, if the pipelines are in a loose state during the synchronous telescopic movement of the telescopic boom, they are very likely to get tangled or even damaged during the movement and pressurization process.

[0005] At present, the common practice in the prior art is to segment the pipeline to minimize the length of the moving part of the pipeline, and at the same time, the pipeline is wound with the help of rollers installed in the telescopic boom, and the specific installation position of the rollers is adjusted during the assembly process of the telescopic boom to ensure that the pipeline can maintain a certain tension after assembly. However, there are the following problems in the prior art: on the one hand, during the assembly process, it is difficult to judge and detect whether the specific installation position of the roller is appropriate, and it completely depends on the experience of the assembly workers and the manufacturing accuracy of the pipeline, resulting in a large deviation in the specific installation position of the roller, and the tension generated on the pipeline is easy to be too small or too large; on the other hand, due to the limitation of the narrow space inside the telescopic boom, after the telescopic boom is fully assembled, if it is found that the tension of the pipeline is too small or too large later, it is difficult to adjust the installation position of the roller, and it is usually necessary to disassemble a series of components such as the telescopic boom, which is troublesome to operate and the operating space is limited.

[0006] Therefore, how to conveniently and accurately adjust the tension of the pipeline on the basis of achieving the tensioning of the pipeline is a technical problem faced by those skilled in the art. Utility Model Content

[0007] The purpose of the utility model is to provide an adjustable pipeline tensioning device, which can conveniently and accurately adjust the tension of the pipeline on the basis of achieving the tensioning of the pipeline. Another purpose of the utility model is to provide a telescopic arm forklift.

[0008] In order to solve the above technical problems, the utility model provides an adjustable pipeline tensioning device, comprising a telescopic boom, a mounting seat connected to the tail end of the telescopic boom, a driving mechanism arranged on the mounting seat, a tensioning mechanism connected to the output end of the driving mechanism, and a pipeline wound on the tensioning mechanism;

[0009] The driving mechanism is used to drive the tensioning mechanism to perform linear motion along a preset direction to tension the pipeline.

[0010] In some specific embodiments, the tensioning mechanism includes a support frame and a tensioning wheel;

[0011] The support frame is dynamically connected to the output end of the driving mechanism;

[0012] The tension wheel is arranged on the support frame, the pipeline is wound on the tension wheel, and the tension wheel has or does not have a rotational freedom.

[0013] In some specific embodiments, the support frame includes two clamping plates and an extended connecting plate that are arranged opposite to each other;

[0014] The tension wheel is clamped and fixed between the two clamping plates, and the axial ends of the rotating shaft of the tension wheel are respectively inserted into the corresponding clamping plates;

[0015] One end of the extended connecting plate is connected to the clamping plate, and the other end of the extended connecting plate is dynamically connected to the output end of the driving mechanism.

[0016] In some specific embodiments, the support frame also includes a plurality of extension mounting plates connected to the clamping plate and distributed circumferentially, and a baffle rod connected to each of the extension mounting plates, the radial dimension of each of the extension mounting plates is larger than the outer diameter of the tensioning wheel, and the baffle rod is used to clamp the pipeline.

[0017] In some specific embodiments, the driving mechanism includes an adjusting nut and an adjusting bolt;

[0018] The adjusting nut is rotatably arranged on the rear end surface of the mounting seat;

[0019] The adjusting bolt is slidably inserted into the mounting seat, and one end of the adjusting bolt is threadedly connected to the adjusting nut;

[0020] The other end of the adjusting bolt is connected to the supporting frame.

[0021] In some specific embodiments, a slide groove is provided on the mounting seat;

[0022] The driving mechanism further comprises a sliding seat connected to the other end of the adjusting bolt, and the sliding seat is slidably disposed in the sliding groove;

[0023] The sliding seat is connected to the supporting frame.

[0024] In some specific embodiments, a sliding block is disposed at the bottom of the sliding seat, and the sliding block is slidably embedded in the sliding groove.

[0025] In some specific embodiments, a locking mechanism is further included on the mounting seat, and the locking mechanism is used to lock the sliding seat in the sliding groove.

[0026] In some specific embodiments, a wedge-shaped groove is provided on the rear end surface of the mounting seat;

[0027] The locking mechanism comprises a locking block and a locking bolt;

[0028] The locking block is threadedly connected to the mounting seat through the locking bolt, and a wedge-shaped surface for abutting against the wedge-shaped groove is provided on one side of the locking block facing the rear end face of the mounting seat, and the bottom surface of the locking block is kept in abutment with the support frame.

[0029] The utility model also provides a telescopic arm forklift, comprising a vehicle body and a pipeline tensioning device arranged on the vehicle body, wherein the pipeline tensioning device is specifically the adjustable pipeline tensioning device described in any one of the above items.

[0030] The adjustable pipeline tensioning device provided by the utility model mainly includes a telescopic arm, a mounting seat, a driving mechanism, a tensioning mechanism and a pipeline. Among them, the telescopic arm is the main component, which is generally arranged on the body of the telescopic arm forklift and can perform telescopic movement. The mounting seat is connected to the telescopic arm, specifically connected to the tail end of the telescopic arm. The front end of the telescopic arm is the thin end on which the attachment is installed, and the tail end of the telescopic arm is the thick end opposite to the front end. The driving mechanism is arranged on the mounting seat, and the output end of the driving mechanism forms a power connection with the tensioning mechanism, which is mainly used to drive the tensioning mechanism as a whole to perform linear motion along a preset direction. The tensioning mechanism is connected to the driving mechanism, which is mainly used for winding the pipeline. At the same time, under the drive of the driving mechanism, the installation position is adjusted by linear motion along a preset direction to pull the pipeline and tension the pipeline. In this way, the specific installation position of the tensioning mechanism can be adjusted through the linear movement of the tensioning mechanism along the preset direction, so that the pipeline can be pulled to tension the pipeline; when the tensioning force of the pipeline needs to be adjusted, on the one hand, the linear movement distance of the tensioning mechanism along the preset direction can be controlled by controlling the driving state of the driving mechanism, thereby accurately controlling the tensioning force of the pipeline; on the other hand, since the driving mechanism is arranged on the mounting seat, and the mounting seat is connected to the tail end of the telescopic arm and exposed outside the telescopic arm, the driving mechanism can be conveniently controlled and operated, overcoming the problems of inconvenience in later adjustment and limited operating space caused by the roller being installed inside the telescopic arm in the prior art.

[0031] In summary, the adjustable pipeline tensioning device provided by the utility model can conveniently and accurately adjust the tensioning force of the pipeline on the basis of achieving the tensioning of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0033] Figure 1 The present invention is a schematic diagram of the overall structure of a specific implementation method provided by the present invention.

[0034] Figure 2 for Figure 1 Right view of .

[0035] Figure 3 for Figure 1 Schematic diagram of the installation structure of the structure shown on the telescopic arm.

[0036] Figure 4 for Figure 3 Left view of .

[0037] in, Figure 1 — Figure 4 middle:

[0038] Telescopic arm frame—1, mounting base—2, driving mechanism—3, tensioning mechanism—4, pipeline—5, locking mechanism—6;

[0039] The first boom section—11, the second boom section—12, the third boom section—13, and the partition plate—14;

[0040] Slide groove—21, wedge groove—22;

[0041] Adjusting nut—31, adjusting bolt—32, sliding seat—33, sliding block—34;

[0042] Support frame—41, tension wheel—42;

[0043] Locking block—61, locking bolt—62;

[0044] Wedge surface—61a, bottom surface—61b;

[0045] Clamping plate—411, extended connecting plate—412, extended mounting plate—413, stop rod—414;

[0046] Shaft—421. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0048] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 1 This is a schematic diagram of the overall structure of a specific implementation method provided by the utility model. Figure 2 for Figure 1 Right view of Figure 3 for Figure 1 The schematic diagram of the installation structure of the structure shown on the telescopic arm, Figure 4 for Figure 3 Left view of .

[0049] In a specific implementation manner provided by the present utility model, the adjustable pipeline 5 tensioning device mainly includes a telescopic arm 1, a mounting seat 2, a driving mechanism 3, a tensioning mechanism 4 and a pipeline 5.

[0050] The telescopic boom 1 is a main component, which is generally arranged on the body of the telescopic forklift and can perform telescopic movement. Generally, the telescopic boom 1 is a split structure, mainly including a first boom 11, a second boom 12 and a third boom 13 which are nested inside and outside.

[0051] The mounting base 2 is connected to the telescopic boom 1, specifically connected to the tail end of the telescopic boom 1. The front end of the telescopic boom 1 is the thin end where the attachment is installed, and the tail end of the telescopic boom 1 is the thick end opposite to the front end. Generally, the mounting base 2 can be specifically connected to the tail end of the second boom 12 or the tail end of the first boom 11.

[0052] The driving mechanism 3 is arranged on the mounting seat 2, and the output end of the driving mechanism 3 forms a power connection with the tensioning mechanism 4, which is mainly used to drive the tensioning mechanism 4 as a whole to perform linear motion along a preset direction.

[0053] The tensioning mechanism 4 is connected to the driving mechanism 3, and is mainly used for winding the pipeline 5. At the same time, under the drive of the driving mechanism 3, the installation position is adjusted by linear motion along a preset direction to pull the pipeline 5 and tension the pipeline 5. Generally, the pipeline 5 can be divided into at least two parts, and the two parts of the pipeline 5 are separated and connected from each other by a partition plate 14 arranged in the telescopic arm 1.

[0054] In this way, the specific installation position of the tensioning mechanism 4 can be adjusted by the linear movement of the tensioning mechanism 4 along the preset direction, so that the pipeline 5 is pulled to tension the pipeline 5; when the tensioning force of the pipeline 5 needs to be adjusted, on the one hand, the linear movement distance of the tensioning mechanism 4 along the preset direction can be controlled by controlling the driving state of the driving mechanism 3, thereby accurately controlling the tensioning force of the pipeline 5; on the other hand, since the driving mechanism 3 is arranged on the mounting seat 2, and the mounting seat 2 is connected to the tail end position of the telescopic arm 1 and exposed outside the telescopic arm 1, the driving mechanism 3 can be conveniently controlled and operated, thereby overcoming the problems of inconvenience in later adjustment and limited operating space caused by the roller being installed inside the telescopic arm 1 in the prior art.

[0055] In summary, the adjustable pipeline 5 tensioning device provided in this embodiment can conveniently and accurately adjust the tensioning force of the pipeline 5 on the basis of achieving tensioning of the pipeline 5 .

[0056] In a specific embodiment of the tensioning mechanism 4, the tensioning mechanism 4 can move linearly along the length direction (or telescopic direction) of the telescopic boom 1 under the power drive of the driving mechanism 3. For example, when the tensioning mechanism 4 moves linearly along the length direction of the telescopic boom 1 toward its tail end, the tensioning force of the pipeline 5 wound on the tensioning mechanism 4 will gradually increase; conversely, when the tensioning mechanism 4 moves linearly along the length direction of the telescopic boom 1 toward its front end, the tensioning force of the pipeline 5 wound on the tensioning mechanism 4 will gradually decrease. Of course, the linear movement direction of the tensioning mechanism 4 is not limited to the length direction of the telescopic boom 1. For example, a direction with a certain inclination angle (such as 5 to 30 degrees) to the length direction of the telescopic boom 1 is also feasible.

[0057] Specifically, the tensioning mechanism 4 mainly includes a support frame 41 and a tensioning wheel 42. The support frame 41 is the main component of the tensioning mechanism 4, and is poweredly connected to the output end of the driving mechanism 3, and can perform linear motion under the power drive of the driving mechanism 3. The tensioning wheel 42 is arranged on the support frame 41, and can perform synchronous linear motion with the support frame 41. At the same time, the pipeline 5 is specifically wound on the tensioning wheel 42, and the pipeline 5 is tensioned by the tensioning wheel 42 following the linear motion of the support frame 41.

[0058] In a specific embodiment of the tensioning wheel 42, considering that when the tensioning wheel 42 tensions the pipeline 5, the pipeline 5 will form friction and relative movement with the outer circle of the tensioning wheel 42, in order to reduce the wear on the contact surface of the two, in this embodiment, the tensioning wheel 42 maintains the freedom of rotation on the support frame 41 and can perform rotation. Specifically, a rotating shaft 421 is inserted at the central axis position of the tensioning wheel 42, so as to be connected to the support frame 41 through the rotating shaft 421 and form a rotation connection. In this way, when the support frame 41 moves linearly along a preset direction and increases the tensioning force of the pipeline 5, the tensioning wheel 42 will rotate synchronously with the tensioning movement of the pipeline 5, thereby forming rolling friction between the two, reducing friction and surface wear. Of course, the tensioning wheel 42 can also be fixed on the support frame 41, that is, it does not have the freedom of rotation. At this time, the outer circle surface of the tensioning wheel 42 will form sliding friction with the pipeline 5.

[0059] In a specific embodiment of the support frame 41, the support frame 41 mainly includes a clamping plate 411 and an extended connecting plate 412. Among them, two clamping plates 411 are provided and are arranged opposite to each other. The clamping plate 411 is generally in the shape of a circular plate or a thin plate of other shapes. The tensioning wheel 42 is arranged between the two clamping plates 411, and the axial end faces of the tensioning wheel 42 are clamped and fixed between the two clamping plates 411. At the same time, the axial ends of the rotating shaft 421 of the tensioning wheel 42 are respectively inserted into the corresponding clamping plates 411. One end of the extended connecting plate 412 is connected to the clamping plate 411, specifically connected to the outer edge of the clamping plate 411 and other positions, and can be extended in a preset direction along the radial, tangential and other directions of the clamping plate 411; the other end of the extended connecting plate 412 extends to the area of ​​the mounting seat 2, and forms a power connection with the output end of the driving mechanism 3 provided on the mounting seat 2. With such arrangement, when the driving mechanism 3 outputs power, the power is transmitted to the other end of the extended connecting plate 412 , and then transmitted to the tensioning wheel 42 , and finally drives the tensioning wheel 42 to perform linear motion.

[0060] Generally, in addition to two clamping plates 411, two corresponding extended connecting plates 412 can also be provided, which are respectively connected to the clamping plates 411 located at the axial ends of the tensioning wheel 42; at the same time, two mounting seats 2 and driving mechanisms 3 can also be provided at the same time, so that the output ends of the two driving mechanisms 3 are respectively connected to the two extended connecting plates 412, thereby improving the driving synchronization of the axial ends of the tensioning wheel 42, and then improving the linear motion stability of the tensioning wheel 42.

[0061] Furthermore, considering that the pipeline 5 is wound on the tensioning wheel 42, in order to improve the winding stability of the pipeline 5 on the tensioning wheel 42 and prevent the pipeline 5 from being loosely wound or loosely wound when the tensioning force is small, an extension mounting plate 413 and a blocking rod 414 are additionally provided in this embodiment. Among them, there are multiple extension mounting plates 413, and each extension mounting plate 413 is connected to the clamping plate 411, generally connected to the outer edge of the clamping plate 411, and extends along the radial direction of the tensioning wheel 42. At the same time, each extension mounting plate 413 is generally distributed along the circumferential direction of the tensioning wheel 42. In addition, the radial size of each extension mounting plate 413 is larger than the outer diameter of the tensioning wheel 42, that is, the extension end of each extension mounting plate 413 extends out of the outer edge of the tensioning wheel 42. The blocking rod 414 is connected to each extension mounting plate 413, for example, connected to the end position of each extension mounting plate 413, and the extension mounting plate 413 can also be simultaneously connected to the clamping plates 411 located at the axial ends of the tension wheel 42, so that the axial ends of the blocking rod 414 are respectively connected to the two extension mounting plates 413 facing each other. The blocking rod 414 is mainly used to press the pipeline 5 above the outer circumferential surface of the tension wheel 42, so as to press the pipeline 5 on the outer circumferential surface of the tension wheel 42 to prevent the pipeline 5 from being loosened. Generally, the axial direction of the blocking rod 414 is kept parallel to the axial direction of the tension wheel 42.

[0062] In a specific embodiment of the driving mechanism 3, the driving mechanism 3 mainly includes an adjusting nut 31 and an adjusting bolt 32. The adjusting nut 31 is arranged on the tail end face of the mounting seat 2 and forms a rotational connection with the mounting seat 2, and has the freedom of rotational movement. At the same time, because it is closely attached to the tail end face of the mounting seat 2, it can only perform rotational movement and cannot perform axial linear movement. The adjusting bolt 32 is inserted into the mounting seat 2 and forms a sliding connection with the mounting seat 2, and one end of the adjusting bolt 32 extends out of the tail end face of the mounting seat 2 and forms a threaded connection with the adjusting nut 31. At the same time, the other end of the adjusting bolt 32 is connected to the support frame 41 of the tensioning mechanism 4, such as connected to the extended connecting plate 412 on the support frame 41. In this way, when the adjusting nut 31 is driven to rotate, a threaded connection is formed between the adjusting nut 31 and the adjusting bolt 32. By utilizing the characteristics of threaded transmission (or screw transmission), the rotational motion of the adjusting nut 31 is converted into axial linear motion of the adjusting bolt 32, so that the adjusting bolt 32 moves linearly relative to the mounting seat 2, and then the supporting frame 41 is driven to move linearly through the adjusting bolt 32, and finally the tensioning wheel 42 is driven to move linearly.

[0063] Generally, the axial direction of the adjusting bolt 32 is kept parallel to the length direction of the telescopic boom 1 .

[0064] Furthermore, in order to facilitate the sliding connection of the adjusting bolt 32 on the mounting seat 2, a slide groove 21 and a sliding seat 33 are additionally provided in this embodiment. The slide groove 21 is provided on the mounting seat 2, and the sliding seat 33 is arranged in the slide groove 21 and forms a sliding connection with the slide groove 21, so that the sliding seat 33 can slide linearly in the slide groove 21. At the same time, the sliding seat 33 is connected to the other end of the adjusting bolt 32, and the side wall of the sliding seat 33 is connected to the support frame 41 of the tensioning mechanism 4. With such a configuration, when the adjusting nut 31 is screwed, the adjusting bolt 32 performs axial linear motion, thereby driving the sliding seat 33 to slide along the slide groove 21, and then driving the support frame 41 to perform synchronous linear motion.

[0065] In addition, in this embodiment, a slider 34 is further provided at the bottom of the sliding seat 33, so that the slider 34 is embedded in the slide groove 21, so that the bottom surface 61b of the slider 34 forms sliding friction with the bottom surface 61b of the slide groove 21, and the cooperation between the slider 34 and the slide groove 21 forms a guiding effect on the movement of the slider 34, thereby realizing the movement guidance of the sliding seat 33, ensuring that the sliding seat 33 moves linearly along the axial direction of the adjusting bolt 32.

[0066] In addition, considering that after the tension of the pipeline 5 is adjusted, the position of the tension wheel 42 needs to be fixed at the latest adjustment position, in view of this, a locking mechanism 6 is added in this embodiment. The locking mechanism 6 is arranged on the mounting seat 2, and is mainly used to lock the sliding seat 33 in the slide groove 21. In this way, after the tension of the pipeline 5 is adjusted, the sliding seat 33 is locked in the slide groove 21 by the locking mechanism 6, so that the adjusting bolt 32 cannot perform axial linear movement, and the support frame 41 and the tension wheel 42 cannot perform linear movement, and finally the installation position of the tension wheel 42 is fixed, ensuring that the pipeline 5 can maintain tension for a long time.

[0067] In a specific embodiment of the locking mechanism 6, the locking mechanism 6 mainly includes a locking block 61 and a locking bolt 62. Accordingly, in this embodiment, a wedge-shaped groove 22 is also provided on the tail end face of the mounting seat 2. Specifically, the locking block is connected to the mounting seat 2 through the locking bolt 62, and is specifically threadedly connected to the tail end face of the mounting seat 2 through the locking bolt 62. At the same time, a wedge-shaped surface 61a is provided on one side of the locking block 61 facing the tail end face of the mounting seat 2, and the wedge-shaped surface 61a is used to abut against the groove wall of the wedge-shaped groove 22 on the mounting seat 2, so as to utilize the abutment between the two to convert the pressure part along the tail end face perpendicular to the mounting seat 2 into downward pressure. In addition, the bottom surface 61b of the locking block 61 is in abutment with the support frame 41, for example, it is in abutment with the top end face of the extended connecting plate 412 on the support frame 41. In this way, when the locking bolt is tightened, the locking block 61 moves toward the rear end face of the mounting seat 2, and the distance between the two is continuously reduced until the front end of the locking block 61 is inserted into the wedge-shaped groove 22 of the mounting seat 2, so that the wedge-shaped surface 61a of the locking block 61 abuts against the groove wall of the wedge-shaped groove 22. Then, as the locking bolt is tightened, the locking block 61 moves forward toward the mounting seat 2 and also moves downward through the abutment between the wedge-shaped surface 61a and the wedge-shaped groove 22, so that the locking block 61 The bottom surface 61b gradually increases the clamping force on the support frame 41, thereby clamping the support frame 41, and then presses the bottom surface 61b of the slider 34 against the bottom surface 61b of the slide groove 21 through the support frame 41 and the sliding seat 33, thereby achieving a locking effect; conversely, when the locking bolt is loosened, the bottom surface 61b of the locking block 61 gradually reduces the clamping force on the support frame 41, thereby loosening the slider 34 and ensuring that there is sufficient sliding clearance between the bottom surface 61b of the slider 34 and the bottom surface 61b of the slide groove 21.

[0068] Of course, the locking mechanism 6 is not limited to the above-mentioned locking block 61 and locking bolt 62. Other methods, such as directly pressing the sliding seat 33 on the top surface of the mounting seat 2 through the locking bolt 62, and then pressing the bottom surface 61b of the slider 34 against the bottom surface 61b of the slide groove 21, can also achieve locking of the tensioning wheel 42.

[0069] The present embodiment further provides a telescopic arm forklift, which mainly includes a vehicle body and a pipeline 5 tensioning device arranged on the vehicle body. Since the pipeline 5 tensioning device adopts all the technical solutions of the above-mentioned embodiment of the adjustable pipeline 5 tensioning device, the telescopic arm forklift provided by the present embodiment also has all the technical effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0070] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An adjustable pipeline tensioning device, comprising a telescopic arm (1), characterized in that: It also comprises a mounting seat (2) connected to the rear end of the telescopic arm (1), a driving mechanism (3) arranged on the mounting seat (2), a tensioning mechanism (4) dynamically connected to the output end of the driving mechanism (3), and a pipeline (5) wound on the tensioning mechanism (4); The driving mechanism (3) is used to drive the tensioning mechanism (4) to perform linear motion along a preset direction so as to tension the pipeline (5).

2. The adjustable pipeline tensioning device according to claim 1, characterized in that: The tensioning mechanism (4) comprises a support frame (41) and a tensioning wheel (42); The support frame (41) is dynamically connected to the output end of the driving mechanism (3); The tension wheel (42) is arranged on the support frame (41), the pipeline (5) is wound on the tension wheel (42), and the tension wheel (42) has or does not have a rotational freedom.

3. The adjustable pipeline tensioning device according to claim 2, characterized in that: The support frame (41) comprises two clamping plates (411) and an extended connecting plate (412) that are arranged opposite to each other. The tension wheel (42) is clamped and fixed between the two clamping plates (411), and the axial ends of the rotating shaft (421) of the tension wheel (42) are respectively inserted into the corresponding clamping plates (411); One end of the extended connection plate (412) is connected to the clamping plate (411), and the other end of the extended connection plate (412) is dynamically connected to the output end of the driving mechanism (3).

4. The adjustable pipeline tensioning device according to claim 3, characterized in that: The support frame (41) further comprises a plurality of extension mounting plates (413) connected to the clamping plate (411) and distributed in the circumferential direction, and a blocking rod (414) connected to each of the extension mounting plates (413), wherein the radial dimension of each of the extension mounting plates (413) is greater than the outer diameter of the tensioning wheel (42), and the blocking rod (414) is used to clamp the pipeline (5).

5. The adjustable pipeline tensioning device according to any one of claims 2 to 4, characterized in that: The driving mechanism (3) comprises an adjusting nut (31) and an adjusting bolt (32); The adjusting nut (31) is rotatably arranged on the rear end surface of the mounting seat (2); The adjusting bolt (32) is slidably inserted into the mounting seat (2), and one end of the adjusting bolt (32) is threadedly connected to the adjusting nut (31); The other end of the adjusting bolt (32) is connected to the supporting frame (41).

6. The adjustable pipeline tensioning device according to claim 5, characterized in that: The mounting seat (2) is provided with a slide groove (21); The driving mechanism (3) further comprises a sliding seat (33) connected to the other end of the adjusting bolt (32), and the sliding seat (33) is slidably disposed in the sliding groove (21); The sliding seat (33) is connected to the supporting frame (41).

7. The adjustable pipeline tensioning device according to claim 6, characterized in that: A sliding block (34) is provided at the bottom of the sliding seat (33), and the sliding block (34) is slidably embedded in the sliding groove (21).

8. The adjustable pipeline tensioning device according to claim 6, characterized in that: It also includes a locking mechanism (6) arranged on the mounting seat (2), and the locking mechanism (6) is used to lock the sliding seat (33) in the sliding groove (21).

9. The adjustable pipeline tensioning device according to claim 8, characterized in that: A wedge-shaped groove (22) is provided on the rear end surface of the mounting seat (2); The locking mechanism (6) comprises a locking block (61) and a locking bolt (62); The locking block (61) is threadedly connected to the mounting seat (2) via the locking bolt (62), and a wedge-shaped surface (61a) for abutting against the wedge-shaped groove (22) is provided on one side of the rear end surface of the locking block (61) facing the mounting seat (2), and the bottom surface (61b) of the locking block (61) is kept in abutment with the support frame (41).

10. A telescopic forklift, comprising a vehicle body and a pipeline tensioning device arranged on the vehicle body, characterized in that: The pipeline tensioning device is specifically the adjustable pipeline tensioning device according to any one of claims 1-9.

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