A towing bar with a swivelling tow ring

Abstract

The present application relates to a kind of tow ring rotatable tow bar, including tow bar main body, tow ring, the tow bar further include connecting plate, transmission block, one end of the connecting plate is fixedly connected with one end of the tow bar main body, the other end of the connecting plate is rotatably connected with the transmission block by pivot;The tow ring includes rod body, ring body, one end of the rod body is connected with the ring body, the other end of the rod body is rotatably connected on the transmission block about its own axis, and the axis of the pivot is perpendicular to the axis of the rod body.The tow ring of the present application can be rotated in two directions relative to the tow bar main body, greatly reducing the lateral force and shear force that tow bar main body, tow ring is subjected to in uphill, bumpy road section and other working conditions, reduce the risk of damage of tow bar in uphill, bumpy road section and other working conditions, increase the reliability of the work of tow bar in various working conditions, improve the traction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering vehicles, in particular to a towing ring rotatable towing bar. BACKGROUND

[0002] With the gradual coverage of large-scale infrastructure construction and heavy equipment manufacturing in hilly basins and other places, the carrying of the traction type engineering vehicle needs to meet different working conditions such as uphill and downhill, bumpy road sections, and therefore the reliability of the towing bar is the most important for meeting the working conditions such as uphill and downhill, bumpy road sections.

[0003] For the working conditions such as uphill and downhill, bumpy road sections, the lateral force and shear force borne by the towing ring of the towing bar are greatly increased, and the existing towing ring of the towing bar is often fixedly connected by welding, which is not sufficient to bear the greatly increased lateral force and shear force, and damage and fracture often occur, which has safety hazards, and once it fails, it will cause the towed engineering vehicle to lose control and cause major safety accidents, and increasing the strength of the towing ring will greatly increase the cost of the towing bar. SUMMARY

[0004] The purpose of the present application is to provide a towing ring rotatable towing bar.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is:

[0006] A towing ring rotatable towing bar, comprising a towing bar body and a towing ring, the towing bar further comprising a connecting plate and a transmission block, one end of the connecting plate is fixedly connected with one end of the towing bar body, and the other end of the connecting plate is rotatably connected with the transmission block through a rotating shaft; the towing ring comprises a rod body and a ring body, one end of the rod body is connected with the ring body, and the other end of the rod body is rotatably connected on the transmission block about its own axis, and the axis of the rotating shaft is perpendicular to the axis of the rod body.

[0007] The above technical scheme is preferably that one end of the towing bar body is provided with a through hole, one end of the connecting plate is provided with a first hole, and a pin shaft passes through the through hole and the first hole at the same time, and the pin shaft can effectively increase the shear resistance of the towing bar by being arranged.

[0008] Further preferably, one end of the connecting plate is fixedly connected with one end of the towing bar body through a first fastening assembly, the first fastening assembly comprises a baffle and a first bolt, at least one first bolt is connected to the end of the pin shaft through the baffle, and at least one first bolt is connected to the connecting plate through the baffle.

[0009] Preferably, one end of the connecting plate is fixedly connected to one end of the drawbar body through a first fastening assembly, and the first fastening assembly comprises a second bolt, and at least one second bolt is connected to one end of the drawbar body through the connecting plate.

[0010] Preferably, the connecting plate has a boss on the plate surface on the side facing the drawbar body, and the side surface of the boss abuts against the end surface of one end of the drawbar body, thereby improving the shear resistance and lateral force resistance of the drawbar.

[0011] Preferably, the rotating shaft is connected to the transmission block, and the other end of the connecting plate is provided with a second hole, and the rotating shaft is arranged in the second hole.

[0012] Preferably, the connecting plates are symmetrically connected to the opposite sides of one end of the drawbar body, and the connecting plates on both sides clamp one end of the drawbar body and the transmission block therebetween.

[0013] Preferably, the transmission block is provided with a through hole, and the rod body is arranged in the through hole.

[0014] Further preferably, the transmission block and the rod body are rotatably connected through a second fastening assembly, the second fastening assembly comprises a nut, a check ring and a third bolt, the other end of the rod body is arranged outside the through hole, the check ring is arranged at the end of the rod body, the third bolt is connected to the rod body through the check ring, and the nut is sleeved on the part of the rod body arranged outside the through hole and limits the rod body from being pulled out of the through hole, thereby effectively improving the locking force between the drag ring and the transmission block and making the structure more reliable.

[0015] Preferably, the rotating shaft is provided with a lubricating channel, one end of the lubricating channel is arranged on the end surface of the rotating shaft, and the other end of the lubricating channel is arranged on the circumferential surface of the rotating shaft, and the lubricating channel is connected with an oil cup at one end, thereby supplying oil between the rotating shaft and the connecting plate through the oil cup and improving the rotation ability between the connecting plate and the rotating shaft.

[0016] Thanks to the above technical scheme, the present application has the following advantages compared with the prior art:

[0017] The drag ring of this invention can rotate relative to the main body of the drawbar in two directions, which greatly reduces the lateral and shear forces on the main body of the drawbar and the drag ring in working conditions such as uphill and downhill slopes and bumpy road sections. This reduces the risk of damage to the drawbar in working conditions such as uphill and downhill slopes and bumpy road sections, increases the reliability of the drawbar in various working conditions, and improves the traction efficiency. Attached Figure Description

[0018] Appendix Figure 1 This is a three-dimensional disassembled schematic diagram of the traction rod in this embodiment.

[0019] Appendix Figure 2 This is a cross-sectional view of the traction rod in this embodiment.

[0020] In the attached diagrams above:

[0021] 1. Traction rod body; 10. Connecting end; 100. Through hole; 2. Drag ring; 20. Rod body; 21. Ring body; 3. Connecting plate; 30. First hole; 31. Boss; 32. Second hole; 4. Transmission block; 40. Rotating shaft; 400. Lubrication channel; 41. Through hole; 50. Baffle; 51. First bolt; 52. Second bolt; 60. Nut; 61. Retaining ring; 62. Third bolt; 63. Washer; 7. Oil cup; 8. Pin. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] like Figure 1 , 2 The illustrated rotatable tow bar includes a tow bar body 1, a tow ring 2, a connecting plate 3, a transmission block 4, a first fastening assembly, and an oil cup 7. Specifically:

[0025] The traction rod body 1 extends in length direction, one end of which forms a connecting end 10 for connecting with the towing ring 2, and the other end of which is used for connecting with the vehicle body.

[0026] The towing ring 2 comprises a rod body 20 and a ring body 21, one end of the rod body 20 is connected with the ring body 21, and the other end of the rod body 20 is rotatably connected with the transmission block 4.

[0027] One end of the connecting plate 3 is fixedly connected with the connecting end 10 of the traction rod body 1, and the other end of the connecting plate 3 is rotatably connected with the transmission block 4 through the rotating shaft 40. In the embodiment, a pair of the connecting plates 3 are provided, and the pair of the connecting plates 3 are symmetrically connected on the opposite sides of the connecting end 10 of the traction rod body 1, and the pair of the connecting plates 3 clamp the connecting end 10 of the traction rod body 1 and the transmission block 4 therebetween.

[0028] The connecting end 10 of the traction rod body 1 is provided with a through hole 100, and one end of the connecting plate 3 is provided with a first hole 30, and a pin shaft 8 penetrates through the through hole 100 and the first hole 30, and the pin shaft 8 can effectively increase the shear resistance of the traction rod.

[0029] One end of the connecting plate 3 is fixedly connected with the connecting end 10 of the traction rod body 1 through a first fastening assembly, and the first fastening assembly comprises a baffle 50, a first bolt 51 and a second bolt 52, wherein the first bolt 51 is a hexagonal head bolt, the second bolt 52 is a hexagonal flange bolt, one first bolt 51 is connected with the end of the pin shaft 8 through the baffle 50, the other first bolt 51 is connected with the connecting plate 3 through the baffle 50, and a plurality of second bolts 51 are connected with the connecting end 10 of the traction rod body 1 through the connecting plate 3, and the second bolt 51 shown in the figure is four.

[0030] The plate surface of the connecting plate 3 towards the connecting end 10 of the traction rod body 1 is provided with a boss 31, and the side surface of the boss 31 abuts against the end surface of the connecting end 10 of the traction rod body 1, so as to improve the shear resistance and lateral force resistance of the traction rod.

[0031] The axis of the rotating shaft 40 extends along the width direction of the traction rod body 1, and the rotating shaft 40 is connected with the transmission block 4 or integrally provided with the transmission block 4, and since the transmission block 4 is provided with the connecting plate 3 on both sides, the transmission block 4 is respectively connected with the rotating shaft 40 on both sides. The other end of the connecting plate 3 is provided with a second hole 32, and the rotating shaft 40 is arranged in the second hole 32. One end of the pair of the connecting plates 3 is fixed with the connecting end 10 of the traction rod body 1, the relative distance between the other end of the pair of the connecting plates 3 remains unchanged, and the rotating shaft 40 only needs to be arranged in the second hole 32 without any other connection relationship. In this way, the towing ring 2 can be rotated relative to the traction rod body 1 through the rotating shaft 40 of the transmission block 4.

[0032] In order to improve the rotation ability between the connecting plate 3 and the rotating shaft 40, the lubricating channel 400 is arranged on the rotating shaft 40, one end of the lubricating channel 400 is arranged on the end surface of the rotating shaft 40, the other end is arranged on the circumferential surface of the rotating shaft 40, one end of the lubricating channel 400 is connected with the oil cup 7, the lubricating oil is injected into the lubricating channel 400 through the oil cup 7, the oil is led to the rotating shaft 40 and the second hole 32 of the connecting plate 3 through the lubricating channel 400, and the rotation ability between the two is improved.

[0033] The through hole 41 is arranged on the transmission block 4, the rod body 20 is arranged in the through hole 41, and the transmission block 4 and the rod body 20 are rotatably connected through the second fastening assembly. The second fastening assembly includes a nut 60, a check ring 61, a third bolt 62 and a washer 63, wherein the third bolt 62 is a hexagonal head bolt. The other end of the rod body 20 passes out of the through hole 41, the check ring 51 is arranged on the end of the rod body 20, the third bolt 62 is connected to the rod body 20 through the check ring 63, the nut 60 is sleeved on the part of the rod body 20 passing out of the through hole 41 to limit the rod body 20 from being pulled out of the through hole 41, and the washer 63 is also sleeved on the rod body 20 and located between the transmission block 4 and the nut 60, so as to effectively improve the locking force between the towing ring 2 and the transmission block 4 and make the structure more reliable. In this way, rotating the towing ring 2 can rotate the transmission block 4 around the axis of the rod body 20, and the axis of the rod body 20 extends along the length direction of the towing rod body 1.

[0034] The towing ring 2 of the embodiment can rotate relative to the towing rod body 1 in two directions, greatly reduces the lateral force and shear force suffered by the towing rod in the working conditions such as uphill, downhill and bumpy road sections, reduces the risk of damage of the towing rod in the working conditions such as uphill, downhill and bumpy road sections, increases the working reliability of the towing rod in various working conditions, and improves the towing efficiency.

[0035] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable the person skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A towable towbar comprising a towbar body, a tow ring, characterised in that: The traction rod further comprises a connecting plate and a transmission block, one end of the connecting plate is fixedly connected with one end of the traction rod body, the other end of the connecting plate is rotatably connected with the transmission block through a rotating shaft, one end of the traction rod body is provided with a through hole, one end of the connecting plate is provided with a first hole, a pin shaft passes through the through hole and the first hole at the same time, one end of the connecting plate is fixedly connected with one end of the traction rod body through a first fastening assembly, the first fastening assembly comprises a baffle, first bolts and second bolts, at least one first bolt is connected with the end of the pin shaft through the baffle, at least one first bolt is connected with the connecting plate through the baffle, at least one second bolt is connected with one end of the traction rod body through the connecting plate, the connecting plate is provided with a boss on the plate surface of the side facing the traction rod body, the side surface of the boss is in abutment with the end surface of one end of the traction rod body; the towing ring comprises a rod body and a ring body, one end of the rod body is connected with the ring body, the other end of the rod body is rotatably connected with the transmission block around its own axis, and the axis of the rotating shaft is perpendicular to the axis of the rod body.

2. The swivelable towbar according to claim 1, characterized in that The rotating shaft is connected with the transmission block; the other end of the connecting plate is provided with a second hole, and the rotating shaft passes through the second hole.

3. The swivelable towbar according to any one of claims 1 to 2, characterized in that: The connecting plates are symmetrically connected with one end of the traction rod body on opposite sides, and the connecting plates on both sides clamp one end of the traction rod body and the transmission block therebetween.

4. The swivelable tow bar of claim 1, wherein: The transmission block is provided with a through hole, and the rod body passes through the through hole.

5. The swivelable towbar according to claim 4, characterized in that: The transmission block and the rod body are rotatably connected through a second fastening assembly, the second fastening assembly comprises a nut, a check ring and a third bolt, the other end of the rod body passes out of the through hole, the check ring is arranged on the end of the rod body, the third bolt is connected with the rod body through the check ring, and the nut is sleeved on the part of the rod body passing out of the through hole and limits the rod body from being taken out of the through hole.

6. The swivelable tow bar of claim 1, wherein: The rotating shaft is provided with a lubricating channel, one end of the lubricating channel is arranged on the end surface of the rotating shaft, and the other end of the lubricating channel is arranged on the peripheral surface of the rotating shaft, and one end of the lubricating channel is connected with an oil cup.

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