Traction device

Abstract

The utility model relates to the technical field of cable traction, in particular to a traction device. The traction device comprises a first circular shaft, a second circular shaft and a third circular shaft which are sequentially arranged in parallel, the first circular shaft is connected with a first traction roller assembly in a rotating mode, and the second circular shaft is connected with a second traction roller assembly in a rotating mode. The first circular shaft and the second circular shaft are rotationally connected through the first connecting rod, the second circular shaft and the third circular shaft are rotationally connected through the second connecting rod, the telescopic assembly is arranged between the first circular shaft and the third circular shaft, and then the first connecting rod, the second connecting rod and the telescopic assembly form a triangular structure. And the distance between the first circular shaft and the third circular shaft is adjusted through stretching and retracting of the telescopic assembly, so that the relative positions and the formed angles of the first traction roller assembly, the second traction roller assembly and the third traction roller assembly can be adjusted according to actual needs, and the practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of cable traction technology, and specifically to a traction device. Background Technology

[0002] After the cable tray is installed, during the cable threading process, it is difficult to eliminate the friction when the cable enters the tray from the ground. Therefore, it is often necessary to use a traction device to pull the cable.

[0003] Currently, the traction device includes a mounting frame, multiple round shafts, and multiple traction rollers. The multiple round shafts are fixed to the mounting frame, and each round shaft is rotatably connected to a traction roller. Each traction roller has a fixed plate installed at both ends, and the cable is located between two fixed plates and moves on the traction roller.

[0004] However, the relative positions and angles between the multiple traction rollers in this traction device cannot be changed, and cannot be adjusted according to the on-site construction scenario, resulting in low practicality. Utility Model Content

[0005] (I) The problem to be solved by this utility model is: how to adjust the relative position and angle between multiple traction rollers according to the on-site construction scenario to improve practicality.

[0006] (II) Technical Solution

[0007] The present invention provides a traction device comprising a first circular shaft, a second circular shaft, and a third circular shaft arranged in parallel in sequence;

[0008] A first traction roller assembly is rotatably connected to the first circular shaft, a second traction roller assembly is rotatably connected to the second circular shaft, and a third traction roller assembly is rotatably connected to the third circular shaft.

[0009] The second circular shaft is rotatably connected to the first circular shaft via the first connecting rod;

[0010] The second circular shaft is rotatably connected to the adjacent third circular shaft via a second connecting rod;

[0011] A telescopic component is provided between the first circular shaft and the third circular shaft for adjusting the distance between the first circular shaft and the third circular shaft.

[0012] According to one embodiment of the present invention, multiple third traction roller assemblies and multiple third circular shafts are provided, and the third traction roller assemblies and the third circular shafts correspond one-to-one;

[0013] Each pair of adjacent third circular shafts is movably connected by a third connecting rod.

[0014] Each of the third circular shafts is connected to the first circular shaft via one of the telescopic components.

[0015] According to one embodiment of the present invention, the first traction roller assembly includes a first roller body and two first fixed discs;

[0016] The first roller body is rotatably connected to the first circular shaft, and the axis of the first roller body coincides with the axis of the first circular shaft;

[0017] The two first fixed disks are respectively disposed at both ends of the first roller body, and both first fixed disks are rotatably connected to the first circular shaft;

[0018] The second traction roller assembly includes a second roller body and two second fixed discs;

[0019] The second roller body is rotatably connected to the second circular shaft, and the axis of the second roller body coincides with the axis of the second circular shaft;

[0020] The two second fixed discs are respectively disposed at both ends of the second roller body.

[0021] According to one embodiment of the present invention, each of the two first fixing discs is provided with a first nut on the side away from each other. The first nut is screwed to the first round shaft, and the two first nuts cooperate to restrict the first connecting rod from disengaging from the first round shaft.

[0022] According to one embodiment of the present invention, the telescopic assembly includes a first rod, a second rod, a connecting block, and fastening bolts;

[0023] The first rod body has a strip-shaped groove, and the second rod body is slidably connected within the strip-shaped groove;

[0024] The length direction of the strip groove is the same as the length direction of the first rod;

[0025] Along the length of the first rod, the first rod and the second rod are respectively provided with a plurality of first through holes and a plurality of second through holes at intervals;

[0026] The fastening bolt passes through one of the first through holes and is screwed into one of the second through holes;

[0027] The first rod is rotatably connected to the first circular shaft, and the second rod is rotatably connected to the third circular shaft through the connecting block.

[0028] According to one embodiment of the present invention, a second nut is provided on the side of the first rod away from the first roller body. The second nut and the first nut cooperate to restrict the movement of the first rod body along the axis of the first circular shaft.

[0029] According to one embodiment of the present invention, a relief groove is provided on the first rod body, the relief groove being used to accommodate the head of the fastening bolt.

[0030] According to one embodiment of the present invention, the third traction roller assembly includes a third roller body and two third fixed discs;

[0031] The third roller is rotatably connected to the third circular shaft, and the axis of the third roller coincides with the axis of the third circular shaft;

[0032] The two third fixed disks are disposed at both ends of the third roller body.

[0033] According to one embodiment of the present invention, the traction device further includes a mounting bracket, wherein the first fixing plate and the third fixing plate are both fixedly connected to the mounting bracket by a plurality of first bolts.

[0034] According to one embodiment of the present invention, the diameter of the first fixed disk is larger than the diameter of the first roller body.

[0035] The beneficial effects of this utility model are:

[0036] The first and second circular shafts are rotatably connected by a first connecting rod, and the second and third circular shafts are rotatably connected by a second connecting rod. A telescopic component is set between the first and third circular shafts, and the first connecting rod, the second connecting rod, and the telescopic component form a triangular structure. By extending and retracting the telescopic component, the distance between the first and third circular shafts can be adjusted, thereby changing the angle of the triangular structure. This allows the relative positions and angles between the first, second, and third traction roller assemblies to be adjusted according to the on-site construction scenario, making it highly practical. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 A perspective view of the traction device provided in Embodiment 1 of this utility model;

[0039] Figure 2 A perspective view of the telescopic component provided in Embodiment 1 of this utility model;

[0040] Figure 3 This is a perspective view of the traction device provided in Embodiment 2 of this utility model.

[0041] Icons: 1. First round shaft; 2. Second round shaft; 3. Third round shaft; 4. First connecting rod; 5. Telescopic assembly; 501. First rod body; 502. Second rod body; 503. First through hole; 504. Second through hole; 505. Fastening bolt; 506. Connecting block; 507. Relief groove; 6. First traction roller assembly; 601. First roller body; 602. First fixing plate; 7. Second traction roller assembly; 8. Third traction roller assembly; 9. Second connecting rod; 10. First nut; 11. Second nut; 12. Mounting bracket; 13. Third connecting rod. Detailed Implementation

[0042] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] Example 1 (with a third traction roller assembly 8):

[0044] like Figures 1-2 As shown, one embodiment of the present invention provides a traction device, including a first circular shaft 1, a second circular shaft 2, and a third circular shaft 3 arranged in parallel in sequence;

[0045] A first traction roller assembly 6 is rotatably connected to a first circular shaft 1, a second traction roller assembly 7 is rotatably connected to a second circular shaft 2, and a third traction roller assembly 8 is rotatably connected to a third circular shaft 3.

[0046] The second circular shaft 2 is rotatably connected to the first circular shaft 1 via the first connecting rod 4;

[0047] The second circular shaft 2 is rotatably connected to the second connecting rod 9 and the adjacent third circular shaft 3;

[0048] A telescopic component 5 is provided between the first circular shaft 1 and the third circular shaft 3 for adjusting the distance between the first circular shaft 1 and the third circular shaft 3.

[0049] The first connecting rod 4 rotatably connects the first circular shaft 1 and the second circular shaft 2, and the second connecting rod 9 rotatably connects the second circular shaft 2 and the third circular shaft 3. A telescopic component 5 is set between the first circular shaft 1 and the third circular shaft 3. Thus, the first connecting rod 4, the second connecting rod 9 and the telescopic component 5 form a triangular structure. By extending and retracting the telescopic component 5, the distance between the first circular shaft 1 and the third circular shaft 3 can be adjusted, thereby changing the angle of the triangular structure. This allows the relative positions and angles between the first traction roller assembly 6, the second traction roller assembly 7 and the third traction roller assembly 8 to be adjusted according to actual needs, making it highly practical.

[0050] Preferably, one end of the first connecting rod 4 is rotatably connected to the first round shaft 1, and the other end is rotatably connected to the second round shaft 2; one end of the second connecting rod 9 is rotatably connected to the second round shaft 2, and the other end is rotatably connected to the third round shaft 3.

[0051] According to one embodiment of the present invention, the first traction roller assembly 6 includes a first roller body 601 and two first fixing discs 602;

[0052] The first roller body 601 is rotatably connected to the first round shaft 1, and the axis of the first roller body 601 coincides with the axis of the first round shaft 1;

[0053] Two first fixed disks 602 are respectively disposed at both ends of the first roller body 601, and both first fixed disks 602 are rotatably connected to the first round shaft 1;

[0054] The second traction roller assembly 7 includes a second roller body and two second fixed discs;

[0055] The second roller body is rotatably connected to the second circular shaft 2, and the axis of the second roller body coincides with the axis of the second circular shaft 2;

[0056] Two second fixed discs are respectively located at both ends of the second roller body.

[0057] According to one embodiment of the present invention, the diameter of the first fixed disk 602 is larger than the diameter of the first roller body 601.

[0058] Preferably, the first roller body 601 is rotatably connected to the first round shaft 1 via a first bearing, and the use of the first bearing can reduce friction.

[0059] To reduce the friction between the first roller 601 and the first fixed disk 602, the first fixed disk 602 includes a first disk body and a second disk body. The first disk body has a hemispherical groove, and the second disk body has an arc-shaped hole. The first disk body and the second disk body are fixedly connected. A rolling ball is installed between the hemispherical groove and the arc-shaped hole. The surface of the rolling ball protrudes from the arc-shaped hole and contacts the first roller 601. When the first roller 601 rotates around the axis of the first circular shaft 1, the rolling ball moves in the hemispherical groove, reducing the friction between the first roller 601 and the first fixed disk 602.

[0060] Of course, a second bearing can also be installed between the second fixed plate and the first roller body 601, which can also reduce friction.

[0061] Of course, in this embodiment, the first fixed disk 602 and the first roller 601 can also be fixedly connected.

[0062] According to one embodiment of the present invention, each of the two first fixing discs 602 is provided with a first nut 10 on the side away from each other. The first nut 10 is screwed to the first round shaft 1. The two first nuts 10 cooperate to restrict the first connecting rod 4 from disengaging from the first round shaft 1.

[0063] like Figure 1 As shown, a first ring is provided between the first connecting rod 4 and the first fixed plate 602. The first ring is sleeved on the first round shaft 1. The two opposite sides of the first ring are respectively in contact with the first fixed plate 602 and the first connecting rod 4 to fill the gap between the first fixed plate 602 and the first connecting rod 4. At this time, the two first nuts 10 can cooperate to simultaneously restrict the movement of the first traction roller assembly 6 and the first connecting rod 4 along the axis of the first round shaft 1 (that is, the first traction roller assembly 6 and the first connecting rod 4 cannot move along the axis of the first round shaft 1).

[0064] According to one embodiment of the present invention, the telescopic component 5 includes a first rod 501, a second rod 502, a connecting block 506, and a fastening bolt 505;

[0065] The first rod 501 has a strip groove, and the second rod 502 is slidably connected in the strip groove;

[0066] The length direction of the strip groove is the same as the length direction of the first rod 501;

[0067] Along the length of the first rod 501, a plurality of first through holes 503 and a plurality of second through holes 504 are respectively spaced apart on the first rod 501 and the second rod 502;

[0068] The fastening bolt 505 passes through one of the first through holes 503 and is screwed into one of the second through holes 504;

[0069] The first rod 501 is rotatably connected to the first circular shaft 1, and the second rod 502 is rotatably connected to the third circular shaft 3 through the connecting block 506.

[0070] According to one embodiment of the present invention, a relief groove 507 is provided on the first rod body 501, which is used to accommodate the head of the fastening bolt 505.

[0071] Depending on the on-site construction scenario, the second rod 502 is pulled out or inserted into the strip groove and adjusted to a suitable position. The fastening bolt 505 is then passed through one of the first through holes 503 and screwed into one of the second through holes 504. The bolt is then tightened until the head of the fastening bolt 505 is fully inserted into the relief groove 507, which indicates that it is tightened in place.

[0072] Of course, in this embodiment, the telescopic component 5 can also take other forms. For example, the telescopic component 5 includes a first mounting block, a second mounting block, and a cylinder. The first mounting block is rotatably connected to the first circular shaft 1, and the second mounting block is rotatably connected to the third circular shaft 3. The fixed end of the cylinder is connected to the first mounting block, and the pushing end of the cylinder is connected to the second mounting block. The distance between the first circular shaft 1 and the third circular shaft 3 is adjusted by controlling the extension and retraction of the cylinder. Its purpose does not depart from the design concept of this utility model; therefore, it should fall within the protection scope of this utility model.

[0073] According to one embodiment of the present invention, a second nut 11 is provided on the side of the first rod 501 away from the first roller 601. The second nut 11 and the first nut 10 cooperate to restrict the movement of the first rod 501 along the axis of the first circular shaft 1.

[0074] The second nut 11 prevents the first rod 501 from detaching from the first round shaft 1.

[0075] Preferably, the first round shaft 1, the second round shaft 2, and the third round shaft 3 are all threaded rods. Optionally, both ends of the first round shaft 1, both ends of the second round shaft 2, and both ends of the third round shaft 3 are provided with an external thread. This allows the first nut 10 and the second nut 11 to be screwed onto the first round shaft 1, and their positions on the first round shaft 1 can be adjusted according to actual conditions.

[0076] According to one embodiment of the present invention, the third traction roller assembly 8 includes a third roller body and two third fixed discs;

[0077] The third roller body is rotatably connected to the third circular shaft 3, and the axis of the third roller body coincides with the axis of the third circular shaft 3;

[0078] Two third fixed discs are set at both ends of the third roller body.

[0079] It should be noted that the first roller 601, the second roller, and the third roller have the same structure. The first roller 601 has a shaft hole, and the first round shaft 1 is rotatably connected in the shaft hole. The length of the first round shaft 1 is greater than the length of the first roller 601. The side of the first roller 601 is curved, and its diameter is larger closer to the two ends of the first roller 601. Therefore, when the cable moves on the first roller 601, the second roller, and the third roller, it is not easy to deviate along the axial direction of the first round shaft 1.

[0080] According to one embodiment of the present invention, the traction device further includes a mounting bracket 12, and the first fixing plate 602 and the third fixing plate are both fixedly connected to the mounting bracket 12 by a plurality of first bolts.

[0081] Specifically, step one: first, install the first roller body 601 onto the first round shaft 1, and install the two first fixing disks 602 onto the first round shaft 1, located at both ends of the first roller body 601. Assemble the second traction roller assembly 7 and the third traction roller assembly 8 in the same way.

[0082] Step 2: Taking the same side of the first traction roller assembly 6, the second traction roller assembly 7 and the third traction roller assembly 8 as an example, insert the second connecting rod 9 into the second round shaft 2 and the third round shaft 3 respectively, put the first ring on one side of the first fixed plate 602, insert the first connecting rod 4 into the first round shaft 1 and the second round shaft 2 respectively, and screw the first nut 10 onto the first round shaft 1.

[0083] While the first rod 501 is sleeved on the first round shaft 1, the connecting block 506 is sleeved on the third round shaft 3, and then the second nut 11 is screwed onto the first round shaft 1 for fixation.

[0084] Step 3: Install the other side of the first traction roller assembly 6, the second traction roller assembly 7, and the third traction roller assembly 8 in the same manner as in Step 2 above, so that the first traction roller assembly 6, the second traction roller assembly 7, and the third traction roller assembly 8 cannot move along the axial direction of the first round shaft 1.

[0085] Step 4: Adjust the length of the second rod 502 extending into the slot to a suitable position, and then secure it with the fastening bolt 505.

[0086] After the traction device is assembled, the first fixed plate 602 is rotatably connected to the first round shaft 1, the second fixed plate is rotatably connected to the second round shaft 2, and the third fixed plate is rotatably connected to the third round shaft 3.

[0087] Step 5: Then, fix the first fixing plate 602 and the third fixing plate to the mounting bracket 12 with multiple first bolts, and finally install the mounting bracket 12 into the corresponding position.

[0088] Example 2 (when multiple third traction roller assemblies 8 are provided):

[0089] According to one embodiment of the present invention, such as Figure 3 As shown, multiple third traction roller assemblies 8 and third circular shafts 3 are provided, and the third traction roller assemblies 8 and third circular shafts 3 correspond one-to-one.

[0090] Each pair of adjacent third circular shafts 3 are movably connected by a third connecting rod 13;

[0091] Each third circular shaft 3 is connected to the first circular shaft 1 via a telescopic component 5.

[0092] Thanks to the telescopic component 5 and the third connecting rod 13, the third traction roller component 8 can be added or removed according to the actual situation, making it more practical.

[0093] Preferably, when multiple third traction roller assemblies 8 are provided, the first rod 501 in each telescopic assembly 5 is arranged sequentially along the axial direction of the first round shaft 1, and the multiple first rods 501 are all located between the first nut 10 and the second nut 11.

[0094] It should be noted that two first nuts 10 are screwed onto the second round shaft 2. The sides of the two first nuts 10 that are close to each other are respectively in contact with the first connecting rod 4, which further prevents the second traction roller assembly 7 from moving in the axial direction of the second round shaft 2 and improves stability.

[0095] like Figure 3 As shown, since the third connecting rods 13 are alternately arranged, when there is a gap between the third connecting rod 13 and the third fixed plate, the second ring is used to fill the gap between the third connecting rod 13 and the third fixed plate, so that the two first nuts 10 located on the third circular shaft 3 can simultaneously restrict the movement of the third traction roller assembly 8 and the third connecting rod 13 along the axial direction of the third circular shaft 3.

[0096] Since the third traction roller assembly 8 on each third circular shaft 3 is prevented from moving along the axial direction of the third circular shaft 3 by two first nuts 10 and a second ring added as needed, when it is necessary to reduce the number of third traction roller assemblies 8, the first nuts 10 and the telescopic assembly 5 are removed, the third circular shaft 3 is pulled out, and the corresponding third traction roller assembly 8 is disassembled, which makes it more practical.

[0097] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., 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 utility model and simplifying the description, and do not 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 utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0098] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0099] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A traction device, characterized in that, It includes a first circular shaft (1), a second circular shaft (2), and a third circular shaft (3) arranged in parallel in sequence; A first traction roller assembly (6) is rotatably connected to the first round shaft (1), a second traction roller assembly (7) is rotatably connected to the second round shaft (2), and a third traction roller assembly (8) is rotatably connected to the third round shaft (3). The second circular shaft (2) is rotatably connected to the first circular shaft (1) via the first connecting rod (4); The second circular shaft (2) is rotatably connected to the third circular shaft (3) adjacent to it via the second connecting rod (9); A telescopic component (5) for adjusting the distance between the first round shaft (1) and the third round shaft (3) is provided between the first round shaft (1) and the third round shaft (3).

2. The traction device according to claim 1, characterized in that, Multiple third traction roller assemblies (8) and third circular shafts (3) are provided, and the third traction roller assemblies (8) and third circular shafts (3) correspond one-to-one; Each pair of adjacent third circular shafts (3) is movably connected by a third connecting rod (13); Each of the third circular shafts (3) is connected to the first circular shaft (1) via a telescopic assembly (5).

3. A traction device according to claim 1, characterized in that, The first traction roller assembly (6) includes a first roller body (601) and two first fixed discs (602); The first roller body (601) is rotatably connected to the first round shaft (1), and the axis of the first roller body (601) coincides with the axis of the first round shaft (1); Two first fixed disks (602) are respectively disposed at both ends of the first roller body (601), and both first fixed disks (602) are rotatably connected to the first round shaft (1); The second traction roller assembly (7) includes a second roller body and two second fixed discs; The second roller body is rotatably connected to the second round shaft (2), and the axis of the second roller body coincides with the axis of the second round shaft (2); The two second fixed discs are respectively disposed at both ends of the second roller body.

4. A traction device according to claim 3, characterized in that, Each of the two first fixing discs (602) is provided with a first nut (10) on the side away from each other. The first nut (10) is screwed to the first round shaft (1). The two first nuts (10) cooperate to restrict the first connecting rod (4) from disengaging from the first round shaft (1).

5. A traction device according to claim 4, characterized in that, The telescopic assembly (5) includes a first rod (501), a second rod (502), a connecting block (506), and a fastening bolt (505); The first rod (501) has a strip groove, and the second rod (502) is slidably connected in the strip groove; The length direction of the strip groove is the same as the length direction of the first rod (501); Along the length direction of the first rod (501), a plurality of first through holes (503) and a plurality of second through holes (504) are respectively spaced apart on the first rod (501) and the second rod (502); The fastening bolt (505) passes through one of the first through holes (503) and is screwed into one of the second through holes (504); The first rod (501) is rotatably connected to the first round shaft (1), and the second rod (502) is rotatably connected to the third round shaft (3) through the connecting block (506).

6. A traction device according to claim 5, characterized in that, A second nut (11) is provided on the side of the first rod (501) away from the first roller (601). The second nut (11) and the first nut (10) cooperate to restrict the first rod (501) from moving along the axis of the first round shaft (1).

7. A traction device according to claim 5, characterized in that, The first rod (501) has a relief groove (507) for accommodating the head of the fastening bolt (505).

8. A traction device according to claim 3, characterized in that, The third traction roller assembly (8) includes a third roller body and two third fixed discs; The third roller body is rotatably connected to the third circular shaft (3), and the axis of the third roller body coincides with the axis of the third circular shaft (3); The two third fixed disks are disposed at both ends of the third roller body.

9. A traction device according to claim 8, characterized in that, The traction device also includes a mounting bracket (12), and the first fixing plate (602) and the third fixing plate are both fixedly connected to the mounting bracket (12) by a plurality of first bolts.

10. A traction device according to claim 3, characterized in that, The diameter of the first fixed disk (602) is larger than the diameter of the first roller (601).

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