Anti-loosening pull rod and multi-shaft steering engineering vehicle

Abstract

The anti-loosening pull rod comprises a pipe body and a pull rod assembly, the pull rod assembly comprises an end rod, a nut and a ring body, and a connecting hole is formed in the end of the pipe body; one end of the end rod extends into the connecting hole of the pipe body and is in threaded connection; the nut is in threaded connection with one end of the end rod; one end of the end rod is sleeved with the ring body, the nut and the ring body can be relatively fixed, a boss is arranged on one of the end face of the pipe body and the end face of the side, facing the pipe body, of the ring body, a plurality of notch parts are arranged on the other one, and when the boss is inserted into the notch parts, the pipe body and the ring body are relatively fixed. The utility model discloses a multi-shaft steering engineering vehicle. The engineering vehicle comprises an anti-loosening pull rod, the end rod and the pipe body cannot rotate relatively, the rod end of the pull rod can be effectively prevented from loosening, the overall structure is simple, and the adjusting precision is high; according to the multi-shaft steering engineering vehicle, the working reliability of the steering mechanism is guaranteed by loosening the pull rod, sliding movement of tires in the steering process is reduced, and the reliability and safety of the engineering vehicle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering vehicles, in particular to an anti-loosening tie rod and a multi-axle steering engineering vehicle. Background Art

[0002] With the construction of large-scale infrastructure and the manufacturing of heavy equipment, heavy-duty multi-axle steering engineering vehicles are needed for transportation. The steering mechanism of the multi-axle steering engineering vehicle uses a hydraulic cylinder to push the connecting rod mechanism to achieve the steering of the wheels on each axis. The steering mechanism has a great impact on the performance of the multi-axle engineering vehicle. The tie rod is an important transmission device in the connecting rod mechanism, and its reliability is the top priority for the normal operation of the steering mechanism.

[0003] Existing tie rods are often limited by structure and space and are fixed with simple bolts. When subjected to pressure and tension for a long time, the bolts often loosen, causing changes in the length of the tie rod or wear and fall off of the tie rod end, posing a safety hazard. Once failure occurs, the engineering vehicle may lose steering control and even cause a major safety accident.

[0004] Referring to the patent with publication number CN204297067U, an anti-loosening structure of an aircraft tie rod is disclosed. Although the tie rod is prevented from loosening by connecting the first fuse hole of the anti-loosening washer and the second fuse hole of the nut through a fuse, it is difficult for the fuse itself to prevent the anti-loosening washer and the nut from loosening, and it is also impossible to ensure that there is no relative rotation between the anti-loosening washer and the tie rod, so the loosening effect is not good. Summary of the invention

[0005] One purpose of the utility model is to provide an anti-loosening pull rod, in particular a loosening pull rod with multiple loosening structures, so as to improve the reliability and safety of the loosening pull rod.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] An anti-loosening tie rod comprises a tube body and a tie rod assembly, wherein the tie rod assembly comprises an end rod, a nut and a ring body, wherein:

[0008] The end of the tube body is provided with a connection hole, and the inner circumference of the connection hole is provided with an internal thread;

[0009] An external thread is arranged on the outer peripheral surface of one end of the end rod, and one end of the end rod extends into the connecting hole of the pipe body and is connected through the thread;

[0010] The nut is threadedly connected to one end of the end rod;

[0011] The ring body is sleeved on one end of the end rod and is located between the tube body and the nut. The nut and the ring body can be relatively fixed.

[0012] One of the end face of the tube body and the end face of the ring body facing the tube body is provided with a boss, and the other is provided with a plurality of notches. When the boss is inserted into the notch, the tube body and the ring body are relatively fixed.

[0013] Preferably, in the above technical solution, there are four notches evenly distributed along the circumferential direction.

[0014] Preferably, in the above technical solution, two bosses are provided, and the two bosses are arranged opposite to each other.

[0015] Preferably, in the above technical solution, the notch, the tube body and the ring body described in the boss have an axial cross-section that is L-shaped.

[0016] In the above technical solution, preferably, the boss is arranged on the end face of the ring body facing the tube body, and the notch is arranged on the end face of the tube body.

[0017] Preferably, the above technical solution is provided with a groove on the outer peripheral surface of one end of the end rod, the groove extends along the axial direction of the end rod, the inner ring of the ring body is provided with a protrusion, the protrusion protrudes toward the center of the ring body, and when the ring body is sleeved on one end of the end rod, the protrusion is located in the groove to prevent relative rotation between the end rod and the ring body.

[0018] Preferably, in the above technical solution, the nut and the ring body are provided with fastening holes penetrating through the end faces thereof, and fasteners pass through the fastening holes to fix the nut and the ring body to prevent the nut from loosening.

[0019] Preferably, in the above technical solution, a bearing hole for setting a bearing is provided at the other end of the end rod, a lubrication channel connected to the bearing hole is provided on the end rod, and an oil cup is provided in the lubrication channel.

[0020] Preferably, in the above technical solution, the tie rod assembly comprises a first tie rod assembly and a second tie rod assembly, and the first tie rod assembly and the second tie rod assembly are respectively connected to two ends of the tube body.

[0021] Preferably, in the above technical solution, an operating hole for rotating the tube body is provided on the tube body, and a tool is used to act on the operating hole to facilitate the rotation of the tube body and adjust the overall length of the pull rod.

[0022] Another object of the utility model is to provide a multi-axle steering engineering vehicle.

[0023] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0024] A multi-axle steering engineering vehicle comprises a plurality of suspension assemblies located on both sides of the vehicle, the engineering vehicle also comprises an anti-loosening tie rod, the tie rod assembly comprises a first tie rod assembly and a second tie rod assembly, the first tie rod assembly and the second tie rod assembly are respectively connected to the two ends of the tube body, and the other ends of the end rods of the first tie rod assembly and the second tie rod assembly are respectively connected to the two adjacent suspension assemblies in front and behind.

[0025] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0026] The end rod and the tube body of the anti-loosening pull rod of the utility model cannot rotate relative to each other, which can effectively prevent the end of the pull rod from loosening. The overall structure is simple and the adjustment accuracy is high.

[0027] The multi-axle steering engineering vehicle of the utility model ensures the working reliability of the steering mechanism by loosening the pull rod, reduces the sliding movement of the tires during the steering process, and improves the reliability and safety of the engineering vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 This is a schematic diagram of the structure of the anti-loosening pull rod in this embodiment;

[0029] Attached Figure 2 For attachment Figure 1 Enlarged view of part A in the middle;

[0030] Attached Figure 3 It is a cross-sectional schematic diagram of the pull rod assembly and the tube body at one end of the anti-loosening pull rod in this embodiment;

[0031] Attached Figure 4 This is a schematic diagram of the end face of the anti-loosening pull rod tube body in this embodiment;

[0032] Attached Figure 5 Schematic diagram of the connection relationship between the anti-loosening pull rod and the suspension assembly in this embodiment.

[0033] In the above attached figure:

[0034] 1. Tube body; 10. Connection hole; 11. Operation hole; 12. Notch;

[0035] 2a, first tie rod assembly; 2b, second tie rod assembly; 20, end rod; 200, bearing; 201, bearing hole; 202, lubrication channel; 203, oil cup; 204, groove; 21, nut; 210, fastening hole; 22, ring body; 220, convex block; 221, fastening hole; 222, boss; 23, fastener;

[0036] 3. Suspension components. DETAILED DESCRIPTION

[0037] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0038] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0039] Embodiment 1:

[0040] like Figure 1-3 The anti-loosening pull rod shown comprises a tube body 1 and a pull rod assembly.

[0041] The end of the pipe body 1 is provided with a connection hole 10, and the inner circumference of the connection hole 10 is provided with an internal thread. The pipe body 1 has two ends, and each end has a connection hole 10. Of course, the connection holes 10 between the two ends can be connected to form a hollow pipe body 1. The pipe body 1 is provided with an operating hole 11 for rotating it. By using a tool to operate the operating hole 11, the pipe body 1 can be rotated to adjust the overall length of the pull rod. In this embodiment, the pipe body 1 is made of a seamless steel pipe.

[0042] The tie rod assembly includes a first tie rod assembly 2a and a second tie rod assembly 2b, and the first tie rod assembly 2a and the second tie rod assembly 2b are respectively connected to the two ends of the tube body 1. The first tie rod assembly 2a and the second tie rod assembly 2b have the same structure, and both include an end rod 20, a nut 21 and a ring body 22. Specifically:

[0043] An external thread is arranged on the outer circumferential surface of one end of the end rod 20, and a groove 204 is arranged on the outer circumferential surface of one end of the end rod 20. The groove 204 extends along the axial direction of the end rod 20. One end of the end rod 20 extends into the connecting hole 10 of the tube body 1 and is connected by a thread. Rotating the tube body 1 or the end tube 20 can lengthen or shorten the overall length of the pull rod, thereby adjusting the length of the pull rod. A bearing hole 201 for setting a bearing 200 is provided at the other end of the end rod 20. A lubrication channel 202 connected to the bearing hole 201 is also provided on the end rod 20. An oil cup 203 is arranged in the lubrication channel 202. The oil cup 203 lubricates the bearing 200 in the bearing hole 201 through the lubrication channel 202.

[0044] The nut 21 is threadedly connected to the outer peripheral surface with external threads at one end of the end rod 20. In this embodiment, the nut 21 adopts the specification of M48×2.

[0045] The ring body 22 is also sleeved on one end of the end rod 20 and is located between the tube body 1 and the nut 21. The inner ring of the ring body 22 is provided with a protrusion 220, which protrudes toward the center of the ring body 22. When the ring body 22 is sleeved on one end of the end rod 20, the protrusion 220 is located in the groove 204, that is, the ring body 22 can only slide on the end rod 20 through the protrusion 220, and the ring body 22 and the end rod 20 cannot rotate relative to each other.

[0046] A boss 222 is provided on one of the end faces of the tube body 1 and the end face of the ring body 22 facing the tube body 1, and a plurality of notches 12 are provided on the other. When the boss 222 is inserted into the notch 12, the tube body 1 and the ring body 22 are relatively fixed (cannot rotate). In this embodiment: the boss 222 is provided on the end face of the ring body 22 facing the tube body 1, and the notch 12 is provided on the end face of the tube body 1. In the figure: there are four notches 12 evenly distributed along the circumferential direction, such as Figure 4 As shown, there are two bosses 222, which are arranged opposite to each other; and the cross-section of the notch 12 and the boss 222 in the axial direction of the tube body 1 and the ring body 12 is L-shaped. Since the four bosses 222 are distributed at 90° intervals, the boss 222 of the ring body 22 can be inserted and matched with the notch 12 of the tube body 1 for each 1 / 4 turn of the tube body 1. Since the pitch of the M48 thread is 2mm, the minimum adjustment amount of the pull rod length each time is 1mm, and the maximum error with the actual required length is 0.5mm, which meets the steering accuracy required for multi-axis steering engineering vehicles.

[0047] The nut 21 and the ring body 22 can be relatively fixed. In this embodiment, the nut 21 and the ring body 22 are provided with fastening holes 210 and 221 penetrating the end faces thereof. The fastener 23 can be a bolt, wherein the fastening hole 210 of the nut 21 is a through hole, and the fastening hole 221 of the ring body 22 is a threaded hole. In the figure, the fastening holes 210 of the nut 21 are provided with 12 holes, and the fastening holes 221 of the ring body 22 are provided with 6 holes. After the nut 21 locks the ring body 22, the fastening holes 210 and 221 of the nut 21 and the ring body 22 are aligned, and the fastener 23 is passed through the fastening holes 210 and 221 to fix the nut 21 and the ring body 22, so as to ensure that the nut 21 cannot rotate relative to the ring body 22, that is, the nut 21 cannot rotate relative to the end rod 20, so as to achieve that the nut 21 does not loosen, so as to ensure that the pipe body 1 and the end rod 20 cannot rotate relative to each other, and finally achieve that the pull rod does not loosen.

[0048] The working process of this embodiment is described in detail below:

[0049] The nut 21 and the ring body 22 of the pull rod assembly at both ends are inserted into the outer circumferential surface of the external thread at one end of the end rod 21, and the end of the end rod 21 is then screwed into the connecting hole 10 of the pipe body 1, and the pipe body 1 is rotated through the operating hole 11 to adjust the length of the pull rod;

[0050] Rotate the tube body 1 until the boss 222 on the ring body 22 can correspond to the notch 12 on the tube body 1, and rotate the nut 21 to make the boss 222 of the ring body 22 abut and press against the notch 12 on the tube body 1, so that the end rod 21 and the tube body 1 no longer rotate relative to each other, and the pull rod no longer loosens.

[0051] Embodiment 2:

[0052] A multi-axle steering engineering vehicle includes a frame, a suspension assembly 3 connected to the bottom of the frame, and an anti-loosening rod. The suspension assembly 3 is located on both sides of the vehicle, and multiple groups of suspension assemblies 3 on each side are arranged in the front and rear directions. Three groups are taken as an example in the figure. The specific structure of the suspension assembly 3 is not the invention point of the present application and will not be elaborated here.

[0053] The tie rod assembly includes a first tie rod assembly 2a and a second tie rod assembly 2b. The first tie rod assembly 2a and the second tie rod assembly 2b are respectively connected to the two ends of the tube body 1. The other ends of the end rods 20 of the first tie rod assembly 2a and the second tie rod assembly 2b are respectively connected to the two adjacent suspension assemblies 3 in front and behind. Figure 5 As shown: a pull rod assembly is connected between the front suspension assembly 3 and the middle suspension assembly 3, and another pull rod assembly is connected between the middle suspension assembly 3 and the rear suspension assembly 3.

[0054] The structure of the tie rod assembly is the same as that of the first embodiment, and will not be described in detail here. The two ends of the tie rod assembly are respectively connected to the two suspension assemblies 3 of the engineering vehicle, and the anti-loosening tie rod can effectively ensure that the length of the tie rod does not change, thereby ensuring that the relative relationship of the steering angles between the various suspensions remains unchanged, thereby ensuring the reliability of the steering mechanism, reducing the sliding movement of the tires during the steering process, reducing the wear of the tires when the engineering vehicle is steering, and improving reliability and safety.

[0055] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An anti-loosening tie rod, comprising a tube body and a tie rod assembly, wherein the tie rod assembly comprises an end rod, a nut and a ring body, wherein: The end of the tube body is provided with a connection hole, and the inner circumference of the connection hole is provided with an internal thread; An external thread is arranged on the outer peripheral surface of one end of the end rod, and one end of the end rod extends into the connecting hole of the pipe body and is connected through the thread; The nut is threadedly connected to one end of the end rod; The ring body is sleeved on one end of the end rod and is located between the tube body and the nut. The nut and the ring body can be relatively fixed. The invention is characterized in that: a boss is arranged on one of the end face of the tube body and the end face of the ring body facing the tube body, and a plurality of notches are arranged on the other end face; when the boss is inserted into the notch, the tube body and the ring body are relatively fixed.

2. The anti-loosening pull rod according to claim 1, characterized in that: There are four notches evenly distributed along the circumferential direction; and / or, there are two bosses, which are arranged opposite to each other.

3. The anti-loosening pull rod according to claim 1, characterized in that: The notch, the tube body and the ring body of the boss have an axial cross section in an L shape.

4. The anti-loosening pull rod according to claim 1, characterized in that: The boss is arranged on the end surface of the ring body facing the tube body, and the notch is arranged on the end surface of the tube body.

5. The anti-loosening pull rod according to claim 1, characterized in that: A groove is arranged on the outer peripheral surface of one end of the end rod, and the groove extends along the axial direction of the end rod. A protrusion is arranged on the inner ring of the ring body, and the protrusion protrudes toward the center of the ring body. When the ring body is sleeved on one end of the end rod, the protrusion is located in the groove.

6. The anti-loosening pull rod according to claim 1, characterized in that: The nut and the ring body are provided with fastening holes penetrating through the end faces thereof, and the fasteners pass through the fastening holes to fix the nut and the ring body.

7. The anti-loosening pull rod according to claim 1, characterized in that: The other end of the end rod is provided with a bearing hole for arranging a bearing, and the end rod is provided with a lubrication channel connected with the bearing hole, and an oil cup is arranged in the lubrication channel.

8. The anti-loosening pull rod according to claim 1, characterized in that: The tie rod assembly comprises a first tie rod assembly and a second tie rod assembly, and the first tie rod assembly and the second tie rod assembly are respectively connected to two ends of the tube body.

9. The anti-loosening pull rod according to claim 1 or 8, characterized in that: The tube body is provided with an operating hole for rotating the tube body.

10. A multi-axle steering engineering vehicle, comprising a plurality of suspension assemblies located on both sides of the vehicle, characterized in that: The engineering vehicle also includes the anti-loosening pull rod described in any one of claims 1 to 9, and the pull rod assembly includes a first pull rod assembly and a second pull rod assembly, and the first pull rod assembly and the second pull rod assembly are respectively connected to the two ends of the tube body, and the other ends of the end rods of the first pull rod assembly and the second pull rod assembly are respectively connected to the two adjacent front and rear suspension assemblies.

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