Suspension combination pin of mining truck

Abstract

The utility model provides a suspension combination pin of a mining truck, belongs to the technical field of suspension combination pins of mining trucks, and mainly solves the problem that in the prior art, a pin hole and a pin shaft are easy to grind and difficult to disassemble. Which comprises a supporting pad and a pin body and is characterized by further comprising an elastic taper sleeve, the elastic taper sleeve is in a circular tube shape, an end cover with a central hole is arranged at one end of the circular tube, the diameter of the central hole of the end cover is slightly larger than that of a thin buckle bolt, and a plurality of expansion joints are formed in the tube wall of the two ends of the circular tube in the central axis direction of the circular tube. An anti-cracking arc is arranged at the tail end of the expansion joint; the middle of the pin shaft body is cylindrical, the two ends of the pin shaft body are conical surfaces, and a through hole is formed in the center of the pin shaft body. An oil groove is formed in the surface of the pin shaft body, an oil hole is formed in the oil groove, a conical surface oil groove is formed in the conical surface of the pin shaft body, and a conical surface oil hole is formed in the conical surface oil groove; and the oil hole and the conical surface oil hole are communicated with the through hole.

Description

Technical Field

[0001] This utility model belongs to the technical field of suspension combination pins for mining trucks, specifically relating to suspension combination pins for mining trucks. Background Technology

[0002] The following conditions are commonly observed in the suspension pins of mining trucks: 1. Pin hole wear. Pin hole wear is a common problem in all equipment. Once the lug (pin seat) begins to wear, the entire process accelerates, severely affecting equipment efficiency and stability. Re-boring and welding are expensive and time-consuming, and the wear will reappear. Examples include steering cylinder pins and tie rod pins in trucks. 2. Complete seizure. This manifests as a) the pin and bearing seizure, which severely affects bearing lubrication, reduces bearing life, and thus affects equipment uptime. b) the pin and pin seat seizure. This makes it very difficult to remove the pin when replacing the bearing. When on-site workers have no other options, they often resort to forceful or destructive disassembly methods, which are time-consuming and wasteful, and also increase safety hazards, such as with truck suspension pins. Summary of the Invention

[0003] The purpose of this utility model is to solve the problems existing in the prior art and to provide a combination pin for the suspension of mining trucks. By adding elastic cone sleeves at both ends of the pin shaft, the elastic cone sleeves can be in direct contact with the pin shaft, avoiding direct contact between the pin shaft and the pin seat. In this way, the service life of the pin seat and the pin shaft can be extended by replacing the elastic cone sleeves.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] The suspension combination pin for mining truck includes a support pad and a pin body. It is characterized by further including an elastic cone sleeve, which is in the shape of a round tube. An end cap with a central opening is provided at one end of the round tube. The diameter of the central opening of the end cap is slightly larger than the diameter of the fine thread bolt. Several expansion joints are opened on the tube wall along the central axis of the round tube at both ends. Anti-crack arcs are provided at the ends of the expansion joints.

[0006] The pin body is cylindrical in the middle and tapered at both ends. A through hole is opened in the center of the pin body. An oil groove is opened on the surface of the pin body, and an oil hole is opened in the oil groove. A tapered oil groove is opened on the tapered surface of the pin body, and a tapered oil hole is opened in the tapered oil groove. The oil hole and the tapered oil hole are connected to the through hole.

[0007] Compared with the prior art, this utility model has the following advantages:

[0008] This utility model adopts an elastic tapered sleeve and a pin body with tapered ends. The tapered shaft hole ensures the sliding state between the tapered surface and the elastic tapered sleeve, which is convenient for disassembly. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] In the diagram: 1—fine thread bolt; 1-1—oil nozzle; 1-2—oil passage; 2—support pad; 3—elastic tapered sleeve; 3-1—expansion joint; 3-1a—anti-crack arc; 4—pin body; 4-1—oil groove; 4-1a—oil hole; 4-2—conical oil groove; 4-2a—conical oil hole; 4-3—through hole. Detailed Implementation

[0011] like Figure 1 As shown, the suspension combination pin for a mining truck includes a support pad 2 and a pin body 4. Its features include: an elastic cone sleeve 3, which is tubular in shape. One end of the tubular tube has a centrally located end cap with a hole slightly larger in diameter than the fine-threaded bolt 1. Several expansion joints 3-1 are formed on the tube wall along the central axis at both ends of the tubular tube. Anti-crack arcs 3-1a are provided at the ends of the expansion joints 3-1. The pin body 4 has a central section... The pin body 4 is cylindrical with tapered ends. A through hole 4-3 is located in the center of the pin body 4. An oil groove 4-1 is formed on the surface of the pin body 4, and an oil hole 4-1a is formed within the oil groove 4-1. A tapered oil groove 4-2 is formed on the tapered surface of the pin body 4, and a tapered oil hole 4-2a is formed within the tapered oil groove 4-2. Both the oil hole 4-1a and the tapered oil hole 4-2a communicate with the through hole 4-3. The installation sequence of the through hole 4-3 during use is as follows:

[0012] The two ends of the pin body 4 are fitted into the elastic tapered sleeve 3. At this time, the elastic tapered sleeve 3 has not yet been deformed by force. Then, the pin with the elastic tapered sleeve 3 is inserted into the pin seat hole and through the connecting component. Support pads 2 are then placed on both ends of the pin. Finally, the fine threaded bolts 1 at both ends are screwed into the fine threaded holes at the ends of the through holes 4-3. An oil passage 1-2 is opened in the center of the fine threaded bolt 1, and an oil injection nozzle 1-1 is provided on the nut of the fine threaded bolt 1.

[0013] During routine maintenance, lubricating oil is injected into this utility model through the grease nipple 1-1. The lubricating oil enters the through hole 4-3 in the center of the pin body 4 through the oil passage 1-2 on the fine thread bolt 1, and enters the oil groove 4-1 and the conical oil groove 4-2 through the oil hole 4-1a and the conical oil groove 4-2 connected to the through hole 4-3, forming an oil film on the pin surface, protecting the pin and extending its service life. In terms of the use and wear resistance of the various components after material treatment, the elastic tapered sleeve 3 is shorter than the pin body 4 and the pin seat hole. In this way, by replacing the elastic tapered sleeve 3, the service life of the overall combination pin is extended, and violent or destructive disassembly is avoided.

Claims

1. A mining truck suspension group pin comprising a support pad (2) and a pin shaft body (4), characterized in that: Also include elastic cone sleeve (3), the elastic cone sleeve (3) is circular tubular, is provided with the end cover of the center hole in one end of the circular tube, the diameter of the end cover center hole is slightly larger than the diameter of the fine pin bolt (1), is provided with several expansion joints (3-1) on the pipe wall along the center axis direction of the circular tube in both ends of the circular tube, is provided with anti-cracking arc (3-1a) in the end of the expansion joint (3-1);The pin shaft body (4) is cylindrical in the middle, both ends are conical, the pin shaft body (4) is provided with a through hole (4-3) in the center;Oil groove (4-1) is set up on the surface of pin shaft body (4), oil hole (4-1a) is set up in the oil groove (4-1), taper oil groove (4-2) is set up on the taper surface of pin shaft body (4), taper oil hole (4-2a) is set up in the taper oil groove (4-2);The oil hole (4-1a) and the taper oil hole (4-2a) are communicated with the through hole (4-3); The both ends of the pin shaft body (4) are respectively provided with the elastic cone sleeve (3), the pin shaft provided with the elastic cone sleeve (3) is arranged in the pin seat hole and penetrates the connecting component, the both ends of the pin shaft body (4) are provided with the support pad (2), the fine pin bolt (1) outside the support pad (2) is respectively connected with the fine pin thread in the pin shaft body (4) end through hole (4-3);The oil channel (1-2) is set up in the center of the fine pin bolt (1), the oil nozzle (1-1) is set up on the cap of the fine pin bolt (1); The design life of the elastic cone sleeve (3) is shorter than the pin shaft body (4) and the pin seat hole.

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