CN209340706U - The connection of hydraulic fluid port compact and sealing device and articulated truck - Google Patents

Abstract

The utility model discloses a compact oil port connection and sealing device and an articulated dump truck. The oil port compact connection and sealing device includes a connector I and a connector II; the connector I is provided with an oil inlet and an oil outlet. The connecting piece I is detachably installed on the oil port of the oil container, so that the oil inlet on the connecting piece I communicates with the oil container; the connecting piece I is also provided with a connection for fastening the connecting piece I with an installation tool Connecting piece II is provided with an oil inlet and an oil outlet, and the connecting piece II is sealed and sleeved in the connecting piece I, so that the oil outlet on the connecting piece I is connected with the oil inlet on the connecting piece II, and the connecting piece The oil outlet on the II is connected with the external oil pipe; the utility model realizes the construction of a large flow, no impact change of the flow direction and a small pressure loss oil guide channel in a small installation space, and avoids oil leakage, so as to solve the problem that the space is relatively small. Small oil port connection and sealing, compact structure, high degree of standardization, convenient disassembly, economical and practical, and easy to realize.

Description

Oil port compact connection and sealing device and articulated dump truck

technical field

The utility model relates to the technical field of articulated dump trucks, in particular to a compact connection and sealing device for an oil port and an articulated dump truck.

Background technique

The body of the articulated dump truck is narrow, so that the installation space of each component is correspondingly narrow. The O-ring seal internal thread oil port of the oil container is not only small in distance from the frame, but also in the adjacent oil ports. The connection and sealing It is necessary to meet the requirements of convenient disassembly and assembly in a narrow space, but also sufficient oil flow, no impact change in flow direction, and low pressure loss, while standard universal hydraulic joints cannot meet the requirements of disassembly and assembly in a narrow space.

Contents of the invention

According to the deficiencies of the prior art, the utility model provides a compact connection and sealing device for the oil port, which realizes the construction of an oil guide channel with a large flow rate, no impact change of the flow direction and a small pressure loss in a small installation space, and avoids oil leakage. of leaks.

The utility model is realized according to the following technical solutions:

A compact connection and sealing device for oil ports, including connecting piece I and connecting piece II; said connecting piece I is provided with at least one oil inlet and at least one oil outlet, and said connecting piece I is detachably installed in a container On the oil port of the oil container, so that the oil inlet on the connecting piece I communicates with the oil container; the connecting piece I is also provided with a connecting head for fastening the connecting piece I with an installation tool; on the connecting piece II At least one oil inlet and at least one oil outlet are provided, and the connecting piece II is sealed and sleeved in the connecting piece I, so that the oil outlet on the connecting piece I communicates with the oil inlet on the connecting piece II, The oil outlet on the connector II communicates with the external oil pipe; the connection and sealing of the oil port in a small space is realized through the cooperation of the connector I and the connector II.

Further, the connecting piece I is a multi-way bolt; the radial surface of the tail of the multi-way bolt is provided with external threads to match the internal threads in the oil port of the oil receiver; the connecting head is set on the multi-way The head of the bolt, and a tightening annular plate is set at the root of the connecting head; the middle part of the multi-way bolt is one inlet and multiple oil outlets, and the oil inlet is located on the end face of the multi-way bolt tail, and the oil outlet is close to the tightening annular plate.

Further, the connecting head is a regular hexagonal structure; the diameter of the circumscribed circle of the regular hexagonal structure is smaller than the diameter of the clamping ring plate.

Further, an O-ring groove is provided on the radial surface of the multi-way bolt at the root of the external thread, and the O-ring is placed in the groove to realize the sealing between the connecting piece I, the connecting piece II and the oil container.

Further, a composite sealing gasket is provided between the clamping annular plate and the connecting piece II to realize the sealing between the connecting piece I and the connecting piece II; the diameter of the clamping annular plate is not smaller than that of the combined sealing gasket Metal ring outer diameter.

Further, the connecting piece II is a hollow T-shaped joint; the hollow T-shaped joint is a T-shaped hollow oil passage formed by two cylindrical hollow tubes, one horizontal and one vertical, perpendicular to each other, and threads are provided on the outside of the end of the longitudinal hollow tube , used to connect with the external oil pipe; the through hole in the transverse hollow pipe is composed of a large drum-shaped hole in the middle and small end holes at both ends; the oil outlet on the connector I is located in the drum-shaped hole.

Further, the inner diameter of the end holes at both ends of the transverse hollow tube is slightly larger than the outer diameter of the connector I, so that the connector I passes through; the diameter of the drum-shaped hole in the transverse hollow tube is larger than the outer diameter of the connector I .

Further, the inner side of the end of the longitudinal hollow tube is set as a tapered bell mouth.

Further, the end face of the transverse hollow tube that fits the end face of the oil port of the oil container is an annular protruding end face.

The articulated dump truck includes an oil container, and three oil ports are provided on the same vertical sectional plane of the oil container, wherein standard universal hydraulic joints are provided on the upper and lower oil ports. The middle oil port of the oil container is provided with a compact connection and sealing device for the oil port.

Beneficial effects of the utility model:

By setting multi-way bolts through the combined sealing gasket, hollow T-shaped joint and O-ring in sequence, and fastening to the oil port of the oil receiver, it solves the problem of building a large flow rate in a small installation space, no impact change of flow direction and pressure loss Small oil guide channel and avoid oil leakage, so as to solve the connection and sealing of oil ports with small space, small structure, high degree of standardization, convenient disassembly and assembly, economical and practical, and easy to realize.

Description of drawings

Fig. 1 is a structural schematic diagram of a preferred embodiment of the oil port compact connection and sealing device of the present invention;

Fig. 2 is the sectional view of multi-way bolt of the present utility model;

Fig. 3 is a side view of the multi-way bolt of the present utility model;

Fig. 4 is a sectional view of the hollow T-shaped joint of the utility model;

Fig. 5 is a side view of the hollow T-shaped joint of the present invention.

Numbers in the above figure: 1. Multi-way bolt; 2. Combined sealing gasket; 3. Hollow T-shaped joint; 4. O-ring; 5. Oil container; 6. Rack; 7. O-ring groove; 8. Top-tight annular plate; 9. Regular hexagonal structure; 10. Horizontal hollow tube; 11. Vertical hollow tube.

Figure 6 is a structural diagram of an application example of a compact connection and sealing device between the standard part I (that is, the combined elbow) and the oil port;

Figure 7 is a structural diagram of the application example of standard part I (that is, combined elbow) and standard part II13 (that is, straight-through joint) + standard part III14 (that is, the form of right-angle elbow);

Figure 8 is a schematic diagram of the structure of the standard part I (that is, the combined elbow);

Figure 9 is a schematic diagram of the structure of the standard part II13 (i.e., the straight-through connector);

Figure 10 is a schematic diagram of the structure of the standard part III14 (that is, in the form of a right-angle elbow).

Numbers in the above figure: 12, standard part Ⅰ; 12-1, the oil inlet thread of standard part Ⅰ; 12-2, the oil inlet fitting surface of standard part Ⅰ; 12-3, the regular hexagonal structure of standard part Ⅰ ;12-4, the thread of the oil outlet of the standard part I; 13, the standard part II; 13-1, the fastening thread of the oil port of the standard part II; 13-2, the fitting surface of the oil port of the standard part II; 13- 3. The regular hexagonal structure of standard part II; 13-4. The oil outlet thread of standard part II; 14. Standard part III; 14-1. The oil inlet thread of standard part III; 14-2. The thread of standard part III Regular hexagonal structure; 14-3, the oil outlet thread of standard part III.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model more clear, the technical solution in the utility model embodiment will be described in more detail below in conjunction with the accompanying drawings in the utility model embodiment. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some embodiments of the present utility model, but not all embodiments. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model. Embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the oil port compact connection and sealing device includes a connector I and a connector II; the connector I is provided with at least one oil inlet and at least one oil outlet, and the connector I is detachably installed On the oil port of the oil container, the oil inlet on the connecting piece I is connected with the oil container; the connecting piece I is also provided with a connecting head for fastening the connecting piece I with an installation tool; the connecting piece II is provided with At least one oil inlet and at least one oil outlet, the connector II is sealed and sleeved in the connector I, so that the oil outlet on the connector I communicates with the oil inlet on the connector II, and the outlet on the connector II The oil port is connected with the external oil pipe; the connection and sealing of the oil port in a small space is realized through the cooperation of the connecting piece I and the connecting piece II.

The following provides a preferred embodiment about the connector I in the above-mentioned embodiment:

As shown in Figure 2 and Figure 3, the connector I is a multi-way bolt 1; the radial surface of the tail of the multi-way bolt 1 is provided with external threads to match the internal threads in the oil port of the oil container 5; the connector It is arranged on the head of multi-way bolt 1, and a tight ring plate 5 is set at the root of the connecting head; the middle part of multi-way bolt 1 is one inlet and multiple oil outlets, and the oil inlet is located on the end face of the multi-way bolt tail, and the oil outlet is close to Tighten the ring plate 8.

A further solution: a combined sealing gasket 2 is provided between the clamping annular plate 8 and the connecting piece II to realize the sealing between the connecting piece I and the connecting piece II. The radial surface of the multi-way bolt 1 located at the root of the external thread is provided with an O-ring groove 7, and the O-ring 4 is placed in it to realize the sealing between the connecting piece I, the connecting piece II and the oil container 5.

A preferred embodiment of the above-mentioned connector is provided below:

The connecting head is a regular hexagonal structure 9 ; The diameter of the clamping annular plate 8 is not smaller than the outer diameter of the metal ring of the combined sealing gasket 2 . In this way, not only the universal wrench can be used for fastening instead of special tools, but also the wrench with smaller specifications can be used for fastening, which solves the problem of convenient disassembly of the oil port connector when the distance between adjacent oil ports is small. Pack.

The following provides a preferred embodiment about the connector II in the above-mentioned embodiment:

As shown in Figure 4 and Figure 5, the connector II is a hollow T-shaped joint 3; the hollow T-shaped joint 3 is a T-shaped hollow oil passage formed by two cylindrical hollow tubes, one horizontal and one vertical, perpendicular to each other, and the vertical hollow tube 11 Threads are provided on the outside of the end to connect with the external oil pipe; the inner through hole of the transverse hollow pipe 10 is composed of a large drum-shaped hole in the middle and small end holes at both ends; the oil outlet on the multi-way bolt 1 is located in the drum-shaped in the hole.

The inner diameter of the end holes at both ends of the transverse hollow tube 10 is slightly larger than the outer diameter of the multi-way bolt 1 so that the multi-way bolt 1 passes through; The inner side of the end of the longitudinal hollow tube 11 is set as a 24° tapered bell mouth. The end face of the transverse hollow tube 10 that fits with the end face of the oil port of the oil container 5 (that is, the B face in Fig. 4 ) is an annular protruding end face.

Continuing to refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, and Fig. 5, the multi-way bolt 1 passes through the combined sealing washer 2, hollow T-shaped joint 3 and O-ring 4 in sequence and is fastened to the oil tank of the oil container 5. After the port, the oil outlet of the multi-way bolt 1 is located inside the drum-shaped hole in the middle of the transverse hollow tube 10 of the hollow T-shaped joint 3 . The diameter of the holes at both ends of the transverse hollow tube 10 of the hollow T-shaped joint 3 is slightly larger than the diameter of the multi-way bolt 1, and only for the multi-way bolt 1 to pass through; the diameter of the middle drum-shaped hole is much larger than the diameter of the multi-way bolt 1 many. In this way, a large flow oil guide channel is built, so that the oil with small oil pressure loss enters the oil inlet of the multi-way bolt 1 from the oil port of the oil container 5, and then flows into the hollow T-shaped joint 3 through its multiple oil outlets. In the middle drum-shaped hole of the transverse hollow pipe 10, it flows to the longitudinal hollow pipe 11 of the hollow T-shaped joint 3, and finally flows into the oil pipe connected with its external thread through the end of the longitudinal hollow pipe 11. This setting effectively guarantees sufficient flow in the oil passage, no impact change in flow direction and small pressure loss, and satisfies the oil port connection in a narrow installation space. The B surface of the hollow T-shaped joint 3 fits the oil port end surface of the oil container 5, and the A surface of the multi-way bolt 1 fits the O-ring 4, and the A surface is located outside the B surface. The mouth, the O-ring groove 7 of the multi-way bolt 1 and the B surface of the hollow T-shaped joint 3 together form a sealing surface requiring O-ring sealing.

The other side opposite to the B surface of the hollow T-shaped joint 3 and the clamping ring plate 8 of the multi-way bolt 1 are sealed with a standard general-purpose metal ring-rubber combination gasket, and the diameter of the clamping ring plate 8 is not less than the metal of the combined sealing gasket 2. The outer diameter of the ring and the joint surface are evenly stressed to meet the sealing requirements. Together with the inner side of the longitudinal hollow tube 11 of the hollow T-shaped joint 3, there is a general 24° tapered bell mouth, which adopts a standardized design concept, and the entire structure is small and versatile. High, convenient disassembly and assembly, economical and practical and easy to implement.

To sum up, the utility model solves the problem in a small installation space by arranging the multi-way bolt 1 to pass through the combined sealing gasket 2, the hollow T-shaped joint 3 and the O-ring 4, and fastening to the oil port of the oil container 5. (that is, the distance between the oil port of the container 5 and the frame 6 in Figure 1) to build an oil guide channel with a large flow rate, no impact change of the flow direction, and a small pressure loss to avoid oil leakage, so as to solve the problem of small space Advanced oil port connection and sealing, compact structure, high degree of standardization, convenient disassembly, economical and practical, and easy to implement.

The application examples of the above-mentioned compact connection and sealing device for oil ports are given below:

As shown in Figure 6, the distance from the end surface of the oil container 5 oil port on the articulated dump truck is L1=92mm from the frame, and there are three oil ports on the same vertical section plane, and the thread specifications are the same, that is, D1=M42mm, two by two The spacing L2=62mm, the size of the oil port is large, and the spacing is relatively small. When installing, both the upper and lower oil ports adopt the standard part I12 (that is, the combined elbow), and the oil inlet thread 12-1 of the standard part I is fastened to the oil port through the regular hexagonal structure 12-3 of the standard part I with a wrench , the fitting surface 12-2 of the oil inlet of the standard part I fits the end face of the oil port of the oil container 5, and the thread 12-4 of the oil outlet of the standard part I connects the external oil pipe. The diameter of the circumscribed circle of the regular hexagonal structure 12-3 of the standard part I is 60 mm.

Application of standard part connection scheme 1: As shown in Figure 8, if the middle oil port is still connected to the standard part I12 (that is, the combined elbow), and the fitting surfaces of the three regular hexagonal oil inlet ports are fitted to the oil container 5 at the same time, then the two The minimum distance in the vertical direction of the regular hexagonal structure 12-3 of the two standard parts I is 62mm -60mm=2mm. Excluding processing errors leads to insufficient space for the tightening wrench of the standard part I12 (that is, the combined elbow) installed in the middle oil port. But it cannot be fastened directly. If the solution is to be solved according to the tightening sequence, that is, the standard part I12 is fastened in the order of the middle first and then the two sides. When only the standard part I12 in the middle needs to be disassembled, the standard part on either side must be disassembled first. Only Ⅰ12 can free up the wrench space required to disassemble the intermediate standard part Ⅰ12, which brings inconvenience to the maintenance of the connection of the intermediate oil port. Therefore, because the radial distance cannot meet the wrench space, this solution brings inconvenience to maintenance and is not feasible enough.

Application of standard part connection scheme 2: as shown in Figure 7, Figure 9, and Figure 10, if the middle oil port adopts standard part Ⅱ13 (that is, straight-through joint) + standard part Ⅲ14 (that is, the form of right-angle elbow), that is, standard part Ⅱ The oil port fastening thread 13-1 is fastened to the oil port through the regular hexagonal structure 13-3 of the standard part II with a wrench, and the oil port fitting surface 13-2 of the standard part II fits the oil port end face of the oil container 5, The oil outlet thread 13-4 of the standard part II is connected with the oil inlet thread 14-1 of the standard part III, and a wrench is used to fasten the standard part II13 through the regular hexagonal structure 14-2 of the standard part III, and the outlet of the standard part III The oil port thread 14-3 connects the external oil pipe. In this scheme, the diameter of the circumscribed circle of the regular hexagonal structure 13-3 of the standard part II is 56mm, so the radial distance between it and any standard part I12 is at least 62mm÷2-56mm÷2=3mm, which satisfies the wrench space, Thereby solving the problem of applying the standard part connection scheme one. The axial distance, after the fastening is completed, the distance between the tail of the standard part 3 and the end face of the oil port of the oil container 5 is 94mm, which is greater than the distance between the end face of the oil port of the oil container 5 and the frame L1 = 92mm, so the axial distance of the scheme If the oil port installation requirements cannot be met, the scheme is not feasible.

Continue to refer to shown in Figure 6, after the installation of the utility model is completed, the distance between the end face of the multi-way bolt 1 screwed into the oil port of the oil container 5 and the end face of the oil port of the oil container 5 is L4=15mm, which is less than the distance between the multi-way bolt 1 and the machine. The minimum distance of the frame 6 is L3=18mm, which means that the disassembly and assembly of the multi-way bolt 1 can not interfere with other parts around.

It is necessary to meet the sufficient oil flow rate and make the outer diameter of the horizontal hollow tube 10 small enough. After calculation, the diameter of the multi-way bolt 1 is consistent with the diameter of the oil port. Take D2=53mm, the processing technology is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not limit it; although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand that: still The specific implementation of the utility model can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solution of the utility model, all of them should be included in the scope of the technical solution claimed by the utility model.

Claims (10)

1. The oil port compact connection and sealing device is characterized in that it includes connecting piece I and connecting piece II; The connecting piece I is provided with at least one oil inlet and at least one oil outlet, and the connecting piece I is detachably installed on the oil port of the oil container, so that the oil inlet on the connecting piece I and the oil container connected; the connecting piece I is also provided with a connecting head for fastening the connecting piece I with an installation tool; The connecting piece II is provided with at least one oil inlet and at least one oil outlet, and the connecting piece II is sealed and sleeved in the connecting piece I, so that the oil outlet on the connecting piece I and the oil outlet on the connecting piece II The oil inlet is connected, and the oil outlet on the connector II is connected with the external oil pipe; Through the cooperation of the connecting piece I and the connecting piece II, the connection and sealing of the oil port that the hydraulic joint of the standard universal piece cannot meet the requirements of disassembly and assembly in a narrow space is realized. 2. The oil port compact connection and sealing device according to claim 1, characterized in that: said connecting piece I is a multi-way bolt; The radial surface of the tail of the multi-way bolt is provided with an external thread to match the internal thread in the oil port of the oil receiver; the connecting head is arranged on the head of the multi-way bolt, and a top tight annular plate; The middle part of the multi-way bolt is one inlet and multiple oil outlets, and the oil inlet is located on the end face of the multi-way bolt tail, and the oil outlet is close to the clamping ring plate. 3. The compact connection and sealing device for oil ports according to claim 2, characterized in that: the connecting head is a regular hexagonal structure; the diameter of the circumscribed circle of the regular hexagonal structure is smaller than the diameter of the clamping ring plate. 4. The oil port compact connection and sealing device according to claim 2, characterized in that: the radial surface of the multi-way bolt located at the root of the external thread is provided with an O-ring groove, which is realized by placing an O-ring in it. Seal between connection piece I, connection piece II and oil container. 5. The oil port compact connection and sealing device according to claim 2, characterized in that: a combined sealing gasket is provided between the clamping annular plate and the connecting piece II to realize the connection between the connecting piece I and the connecting piece II. Seal between Ⅱ; The diameter of the clamping annular plate is not smaller than the outer diameter of the metal ring of the combined sealing gasket. 6. The oil port compact connection and sealing device according to claim 1, characterized in that: the connecting piece II is a hollow T-shaped joint; The hollow T-shaped joint is a T-shaped hollow oil passage formed by two cylindrical hollow pipes, one horizontal and one vertical, which are perpendicular to each other. Threads are provided on the outside of the end of the longitudinal hollow pipe to connect with the external oil pipe; the through hole in the horizontal hollow pipe It consists of a large drum-shaped hole in the middle and small end holes at both ends; the oil outlet on the connector I is located in the drum-shaped hole. 7. The oil port compact connection and sealing device according to claim 6, characterized in that: the inner diameters of the end holes at both ends of the transverse hollow tube are slightly larger than the outer diameter of the connecting piece I, so that the connecting piece I can pass through; The diameter of the drum-shaped hole in the transverse hollow tube is larger than the outer diameter of the connector I. 8. The compact oil port connection and sealing device according to claim 6, characterized in that: the inner side of the end of the longitudinal hollow tube is set as a tapered bell mouth. 9. The compact connection and sealing device for the oil port according to claim 6, characterized in that: the end face of the transverse hollow tube that fits the end face of the oil port of the oil receiver is an annular protruding end face. 10. An articulated dump truck, including an oil container, three oil ports are provided on the same vertical sectional plane of the oil container, wherein standard universal hydraulic joints are provided on the upper and lower oil ports. The feature is that the oil port compact coupling and sealing device described in any one of claims 1 to 9 is provided on the middle oil port of the oil container.