High-toughness wear-resistant knurled bolt for heavy-duty car

Abstract

The utility model relates to the technical field of knurled bolts, in particular to a high-toughness wear-resistant knurled bolt for a heavy-duty car. The high-toughness wear-resistant knurled bolt for the heavy-duty car comprises a knurled bolt, and a conical anti-skid sleeve is sleeved on the outer ring of a screw rod of the knurled bolt; according to the knurled bolt, due to the good tensile strength and toughness of the alloy steel and the good wear resistance of the hard chromium, the whole knurled bolt can have high toughness and wear resistance, and when the knurled bolt penetrates through the bolt counter bore in the wheel to be in threaded connection with the threaded hole in the vehicle body, the conical anti-skid sleeve can be tightly attached to the bolt counter bore in the wheel, so that the anti-skid effect is good. And the anti-skid knurls at the bottom of the pressing ring can be tightly attached to the bottom of the inner side wall of the bolt counter bore in the wheel, so that the connection stability between the knurled bolt and the wheel can be effectively improved, the stress change range of the knurled bolt under the action of alternating loads can be reduced, the fatigue life is prolonged, and then the effect of reducing abrasion is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of knurled bolt, specifically is heavy -duty car high toughness wear -resisting knurled bolt. BACKGROUND

[0002] The main reason that heavy -duty car uses knurled bolt is to improve the stability and safety of connection. Knurled bolt increases the friction coefficient by forming pattern on the bolt surface, thereby improves the torque transmission efficiency, prevents the slip of bolt in the process of tightening and ensures the close connection of wheel and vehicle body, this design makes bolt can transmit torque more effectively, ensures the close connection of wheel and vehicle body, prevents loosening due to vibration, thereby improves the stability and safety of driving, however, it is difficult to effectively and reliably prevent loosening of bolt by only relying on the knurling of the surface of knurled bolt, and the technical innovation is carried out on the basis of the existing knurled bolt for the above situation. SUMMARY

[0003] The utility model discloses heavy -duty car high toughness wear -resisting knurled bolt to solve the problem in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: heavy -duty car high toughness wear -resisting knurled bolt, including:

[0005] Knurled bolt, the outer ring of the screw rod of knurled bolt is sleeved with the conical antiskid sleeve, the outer ring of the conical antiskid sleeve is integrally formed with the connecting ring, the outer ring of the conical antiskid sleeve is placed with the press ring, the bottom of the press ring is evenly penetrated and is provided with the counterbore, the bottom of the press ring is evenly penetrated and is provided with the through hole, the counterbore is provided with the cross bolt, and the cross bolt is penetrated and is screwed with the threaded hole.

[0006] Preferably, the top of the press ring is evenly provided with the fixed cone, and the fixed cone is embedded into the bottom of the connecting ring.

[0007] Preferably, the top of the connecting ring and the conical antiskid sleeve is attached to the bottom of the screw head of knurled bolt, and the top of the press ring is attached to the bottom of the connecting ring.

[0008] Preferably, the bottom of the cross bolt is flush with the bottom of the press ring, and the bottom of the press ring is provided with the antiskid knurling.

[0009] Preferably, the knurled bolt, the press ring, the cross bolt and the fixed cone are all made of alloy steel material.

[0010] Preferably, the surface of the knurled bolt, the press ring, the cross bolt and the fixed cone is plated with hard chromium.

[0011] Compared with the prior art, the utility model has the advantages as follows:

[0012] The utility model discloses, benefit from the good tensile strength and toughness of alloy steel and the good wear resistance of hard chromium, can make the whole knurled bolt have high toughness and wear resistance, and when the knurled bolt penetrates the bolt counterbore on the wheel and the threaded hole on the vehicle body are screwed, the conical anti -skid cover will be closely attached with the bolt counterbore on the wheel, and the anti -skid knurl of the bottom of the compression ring will be closely attached with the inside wall bottom of the bolt counterbore on the wheel, which can effectively improve the connection stability between the knurled bolt and the wheel, so that it can reduce the stress variation range of knurled bolt under the action of alternating load, thereby prolonging the fatigue life, and further playing the effect of reducing wear.

[0013] When the conical anti -skid cover needs to be replaced due to aging or wear, after the cross bolt is unscrewed, the compression ring and the fixed cone can be moved down and removed, and then the conical anti -skid cover and the connecting ring can be moved down and separated from the knurled bolt for replacement, so as to ensure the convenience of replacing the parts of the whole knurled bolt. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the knurled bolt with high toughness and wear resistance for heavy-duty truck of the utility model;

[0015] Fig. 2 It is a bottom view of the knurled bolt with high toughness and wear resistance for heavy-duty truck of the utility model;

[0016] Fig. 3 It is a front view of the knurled bolt with high toughness and wear resistance for heavy-duty truck of the utility model.

[0017] In the drawing: 1, knurled bolt; 11, connecting ring; 12, compression ring; 13, conical anti -skid cover; 14, cross bolt; 15, fixed cone. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0019] Please refer to Figs. 1-3A high-toughness wear-resistant knurled bolt for heavy-duty vehicles includes a knurled bolt 1. The outer ring of the knurled bolt 1 is fitted with a tapered anti-slip sleeve 13. The outer ring of the tapered anti-slip sleeve 13 is integrally formed with a connecting ring 11. A pressure ring 12 is placed on the outer ring of the tapered anti-slip sleeve 13. The bottom of the pressure ring 12 is uniformly provided with countersunk holes. The bottom of the knurled bolt 1 is uniformly provided with threaded holes. The bottom of the pressure ring 12 is uniformly provided with through holes. A cross bolt 14 is actually installed in the countersunk hole. The cross bolt 14 passes through the through hole and is screwed into the threaded hole. The cross bolt 14 passes through the countersunk hole of the pressure ring 12 and the through hole of the connecting ring 11 and is screwed into the threaded hole of the knurled bolt 1. In this way, the pressure ring 12 presses the connecting ring 11 against the bottom of the screw head of the knurled bolt 1, thereby making the tapered anti-slip sleeve 13 stably fixed on the outer ring of the knurled bolt 1.

[0020] The top of the pressure ring 12 is evenly provided with fixing cones 15, which are embedded in the bottom of the connecting ring 11. When the pressure ring 12 presses the connecting ring 11 tightly, the fixing cones 15 will be embedded in the bottom of the connecting ring 11, thereby preventing the connecting ring 11 and the conical anti-slip sleeve 13 from rotating on the outer ring of the knurled bolt 1, thus improving the stability of the conical anti-slip sleeve 13. The tops of the connecting ring 11 and the conical anti-slip sleeve 13 are in contact with the bottom of the thread head of the knurled bolt 1, and the top of the pressure ring 12 is in contact with the connecting ring. The bottom of 11 fits together, and the bottom of the cross bolt 14 is flush with the bottom of the pressure ring 12. The bottom of the pressure ring 12 is provided with anti-slip knurling. The knurled bolt 1, pressure ring 12, cross bolt 14 and fixing cone 15 are all made of alloy steel. The surfaces of the knurled bolt 1, pressure ring 12, cross bolt 14 and fixing cone 15 are all plated with hard chrome. Benefiting from the good tensile strength and toughness of alloy steel, as well as the good wear resistance of hard chrome, the entire knurled bolt can have high toughness and wear resistance.

[0021] Working principle: use cross bolt 14 through the hole of the compression ring 12 and the through hole of the connecting ring 11 and the threaded hole of the knurled bolt 1, so as to press the connecting ring 11 on the bottom of the screw head of the knurled bolt 1 through the compression ring 12, and then make the conical anti-skid sleeve 13 stable and fixed on the outer circle of the screw rod of the knurled bolt 1, when the compression ring 12 is pressed tightly, the fixed cone 15 will be embedded in the bottom of the connecting ring 11, so as to prevent the connecting ring 11 and the conical anti-skid sleeve 13 from rotating on the outer circle of the screw rod of the knurled bolt 1, so as to improve the stability of the conical anti-skid sleeve 13, when the knurled bolt 1 is screwed through the bolt hole on the wheel and the threaded hole on the car body, with the gradual tightening of the knurled bolt 1, the conical anti-skid sleeve 13 will be gradually screwed into the bolt hole on the wheel, when the knurled bolt 1 is tightened, the conical anti-skid sleeve 13 will be tightly fitted with the bolt hole on the wheel, and the anti-skid knurl at the bottom of the compression ring 12 will be tightly fitted with the inner side wall at the bottom of the bolt hole on the wheel, so as to effectively improve the connection stability between the knurled bolt 1 and the wheel, so as to reduce the stress change range of the knurled bolt 1 under the action of alternating load, thereby prolonging the fatigue life and reducing the wear effect, benefiting from the good tensile strength and toughness of alloy steel and the good wear resistance of hard chromium, so that the whole knurled bolt has high toughness and wear resistance, when the conical anti-skid sleeve 13 needs to be replaced due to aging or wear, after the cross bolt 14 is unscrewed, the compression ring 12 and the fixed cone 15 can be moved downward and removed, then the conical anti-skid sleeve 13 and the connecting ring 11 can be moved downward and separated from the knurled bolt 1 for replacement, so as to ensure the convenience of replacement of the parts of the whole knurled bolt.

Claims

1. Heavy duty high toughness wear resistant knurled bolt characterized in that, Include: Knurled bolt (1), the outer circle of the screw rod of the knurled bolt (1) is sleeved with a tapered anti-skid sleeve (13), the outer circle of the tapered anti-skid sleeve (13) is integrally formed with a connecting ring (11), the outer circle of the tapered anti-skid sleeve (13) is placed with a pressing ring (12), the bottom of the pressing ring (12) is uniformly provided with a counterbore, the bottom of the knurled bolt (1) is uniformly provided with a threaded hole, the bottom of the pressing ring (12) is uniformly provided with a through hole, a cross bolt (14) is arranged in the counterbore, the cross bolt (14) is screwed with the threaded hole through the through hole.

2. The heavy duty truck high tenacity wear resistant knurled bolt of claim 1 wherein: The top of the pressing ring (12) is uniformly provided with a fixed cone (15), and the fixed cone (15) is embedded in the bottom of the connecting ring (11).

3. The heavy duty truck high tenacity wear resistant knurled bolt of claim 1 wherein: The top of the connecting ring (11) and the tapered anti-skid sleeve (13) is attached to the bottom of the knurled bolt (1), and the top of the pressing ring (12) is attached to the bottom of the connecting ring (11).

4. The heavy duty truck high tenacity wear resistant knurled bolt of claim 1 wherein: The bottom of the cross bolt (14) is flush with the bottom of the pressing ring (12), and the bottom of the pressing ring (12) is provided with anti-skid knurling.

5. The heavy duty truck high tenacity wear resistant knurled bolt of claim 1 wherein: The knurled bolt (1), the pressing ring (12), the cross bolt (14) and the fixed cone (15) are all made of alloy steel material.

6. The heavy duty truck high tenacity wear resistant knurled bolt of claim 1 wherein: The surface of the knurled bolt (1), the pressing ring (12), the cross bolt (14) and the fixed cone (15) are all plated with hard chromium.

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