CN217105267U - Middle support for bucket rod and excavator bucket rod - Google Patents

Abstract

The utility model relates to a bucket rod is with well support, for solving the problem that the reliability of butter filling structure is low, the processing assembly degree of difficulty is high on the current bucket rod is with well support, the utility model discloses construct a bucket rod is with well support and excavator bucket rod, wherein the bucket rod is with well support structure as an organic whole, and it includes pipy main part, is close to the radial protruding weld part that the position of tip set up at the main part both ends, every one end of its characterized in that be provided with the screw hole that is used for installing the grease nipple on the axial lateral surface of radial protruding weld part, the screw hole is through hole, and its inside end communicates with each other with the main part hole and to main part center part direction slope. The utility model discloses in, to the filling port setting of annotating the butter in well support hole at the tip of well support, avoided the drawback of welding yellow oil pipe at well support middle part, the reliability improves, and manufacturing is simple.

Description

Middle support for bucket rod and excavator bucket rod

Technical Field

The utility model relates to a support, more specifically say, relate to a support and excavator dipper in dipper is used.

Background

As shown in fig. 1, the middle support 10 for the arm is installed at the front of the arm 20, and a pin is installed in an inner hole thereof for fixedly connecting with the swing lever 52. As shown in fig. 2, the middle support 10 is generally tubular, and includes a tubular main body, and the two ends of the tubular main body near the end portions are provided with circular radial protruding welding portions, and the radial side surfaces of the radial protruding welding portions are step-shaped. Round holes are formed in the webs on the two sides of the bucket rod and used for accommodating the two ends of the middle support. The radial convex welding parts at the two ends of the middle support 10 are used for welding with the webs at the two sides of the bucket rod. Therefore, only two ends of the middle support are exposed to the outside of the bucket rod after the middle support is welded and installed.

As shown in fig. 1, two ends of a pin shaft of the middle support 10 are fixedly connected with the lower end of a rocker 52, the upper end of the rocker 52 is connected with the front end of a bucket cylinder (not shown) and a connecting rod 53, the rear end of the bucket cylinder is hinged with a bucket cylinder hinged seat 51 on a bucket rod 50, the front end of the connecting rod 53 is hinged with a bucket 54, and the rocker 52 is driven to swing to rotate the pin shaft when the bucket cylinder is telescopic, so that grease is required to be filled into the middle support for lubricating the middle support during daily use and maintenance of the excavator. As shown in fig. 2, the conventional grease filling structure on the middle support 10 is to form a hole in the middle of the middle support, weld a grease tube 60 at the hole, extend the other end of the grease tube 60 to the web of the arm 50, form a hole on the web to expose the end of the grease tube 60, and mount a grease nipple 55 at the end of the grease tube.

The existing grease filling structure on the middle support seat is composed of a welding grease pipe, and has the following defects:

1. well support is in generating the transportation in-process, and the butter pipe is easy to be collided with and is out of shape, and butter pipe and well support welding department easily appear the defect, and can cause the intraductal foreign matter that has of butter, block up, butter pipe fracture with have defects such as hole, position size and quality are difficult to guarantee, and the problem of oil leak or not advancing the butter can appear in well support department like this.

2. When the middle support is assembled with the bucket rod web plate, two holes at the middle support and the yellow oil pipe need to be aligned, the precision requirement is high during assembly, and two holes need to be formed at the web plate on each side, so that the manufacturing difficulty is high and the efficiency is low; the grease pipe interferes with an ultrasonic flaw detection area, ultrasonic flaw detection cannot be implemented, and potential quality hazards exist.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is the shortcoming of butter filling structure on the support among the current excavator bucket rod is used, and provides a bucket rod is with well support and excavator bucket rod, avoids opening the problem that arouses of butter pipe lead-out hole on butter pipe deformation, welding seam fracture, the bucket rod web.

The utility model discloses a realize that the technical scheme of its purpose is like: the middle support for the bucket rod is of an integral structure and comprises a tubular main body and radial protruding welding parts arranged at the positions, close to the end parts, of the two ends of the main body. The utility model discloses in, to the filling port setting of annotating the butter in well support hole at the tip of well support, avoided the drawback of welding yellow oil pipe at well support middle part, the reliability improves, and manufacturing is simple.

In the middle support for the bucket rod, the threaded hole is a stepped hole, and the thread of the threaded hole is arranged on the small-bore section. The large aperture section can protect the grease nipple when the grease nipple is installed in the threaded hole.

In the middle support for the bucket rod, the middle support is mirror-symmetrical about the central plane of the middle support.

In the middle support for the bucket rod, a protruding portion with a radial protruding size larger than the radial protruding size of other positions on the radial protruding welding portion is arranged on the radial protruding welding portion, and the threaded hole is formed in the outer side face of the protruding portion. The bulge provides space for the setting of the threaded hole, and the threaded hole is convenient to set.

In the middle support for the bucket rod, a reinforcing rib is arranged between the inner side surface of the protruding part and the main body. Further, the width of the reinforcing rib is larger than the aperture of the threaded hole. The strengthening rib not only strengthens the intensity of bulge, still provides the space for setting up the screw hole simultaneously, makes the medial extremity of screw hole incline to main part center.

In the middle support for the bucket rod, the radial side face of the protruding portion is composed of the arc side face at the top and the side planes which are located at two ends of the arc side face and tangent to the arc side face, the radial side faces of other positions on the radial protruding welding portion are cylindrical side faces, and the side planes of the protruding portion are tangent to the cylindrical side faces of the other positions. The structure enables the radial side surface of the radial protrusion welding part to be in a cam shape and to be easily matched with the hole in the bucket rod side web plate.

In the middle support for the bucket arm, the radial protrusion welding part is of a stepped structure in the axial direction, and the radial dimension of the inner part close to the center of the main body is larger than the radial dimension of the outer part far away from the center of the main body. The radial bulge welding part is in a stepped structure in the axial direction, axial limiting is carried out when the radial bulge welding part is matched with the web, and the connection strength of the web and the middle support in the axial direction is improved.

The utility model discloses a realize that the technical scheme of its purpose is like: the excavator bucket rod is characterized by comprising the middle support for the bucket rod, and the welding parts of the radial protrusions of the middle support are positioned in the holes of the webs on the two sides of the front part of the bucket rod and are welded with the holes. Furthermore, a bushing is arranged in an inner hole of the middle support, and the inner side end of the threaded hole is communicated with an oil groove in the bushing.

Compared with the prior art, the utility model discloses in, to the filling port setting of annotating the butter in well support hole at the tip of well support, avoided the drawback of middle part welding yellow oil pipe of well support, the reliability improves, and manufacturing is simple.

Drawings

Fig. 1 is a schematic structural view of a conventional stick.

Fig. 2 is a schematic structural view of a conventional middle support for a stick.

Fig. 3 is a schematic structural view of the middle support of the present invention.

Fig. 4 is a longitudinal sectional view of the middle support of the present invention.

Fig. 5 is a schematic structural view of the bucket rod of the present invention.

Fig. 6 is a schematic structural view of the bushing in the middle support of the bucket rod of the present invention.

Part names and serial numbers in the figure:

the bucket comprises a middle support 1, a main body 10, a bush mounting position 11, a radial protrusion welding part 20, a convex part 21, a circular arc side surface 211, a side plane 212, other parts 22, a cylindrical side surface 221, a reinforcing rib 23, a front web 3, a threaded hole 30, an arm 50, a bucket cylinder hinge seat 51, a rocker 52, a connecting rod 53, a bucket 54, a grease nipple 55 and a grease pipe 60.

Detailed Description

The following description of the embodiments refers to the accompanying drawings.

As shown in fig. 3 and 4, the bucket arm middle support 1 in the present embodiment is a unitary structure, and includes a tubular main body 10, and radial protrusion welding portions 20 provided at both ends of the main body near the ends, wherein the middle support 10 is mirror-symmetrical about a central plane thereof.

The radial projection welding part 20 of each end is provided with a screw hole 30 for mounting a grease nipple on the axial outer side surface, the screw hole 30 is a straight hole, the inner side end of the screw hole 30 is communicated with the inner hole of the main body 10 and inclines towards the center direction of the main body 10. The threaded hole 30 is a stepped hole, and threads thereof are provided in a small-bore section. The large bore section can protect the grease nipple when the grease nipple is installed in the threaded hole 30.

The radial projection welding part 20 is provided with a projection part 21 with a radial projection size larger than that of other parts 22 on the radial projection welding part 20, and the threaded hole 30 is arranged on the outer side surface of the projection part 21. The bulge 21 provides radial space for the threaded hole arrangement, facilitating the arrangement of the threaded hole 30.

A reinforcing rib 23 is arranged between the inner side surface of the convex part 21 and the main body 10, and the width of the reinforcing rib 23 is larger than the aperture of the threaded hole 30. The reinforcing ribs 23 not only reinforce the strength of the protrusions 21 but also provide a space for disposing the screw holes 30 so that the inner ends of the screw holes 30 can be deflected toward the center of the main body 10.

The radial side surface of the projecting portion 21 is composed of a circular arc side surface 211 at the top and side flat surfaces 212 which are positioned at both ends of the circular arc side surface and are tangent to the circular arc side surface 211, the radial side surface of the other portion 22 on the radial projection welding portion 20 is a cylindrical side surface 221, and the side flat surfaces 212 in the radial side surface of the projecting portion 21 are tangent to the cylindrical side surfaces 221 of the other portions 22. This structure allows the radial side surface of the radial projection welding portion 20 to be cam-shaped and easily fit into the hole in the front web 3 of the arm 50. The radial projection weld 20 has a stepped structure in the axial direction, and the radial dimension of the inner portion near the center of the body 10 is larger than the radial dimension of the outer portion away from the center of the body. The step structure of the radial protrusion welding part 20 in the axial direction performs axial limiting when being matched with the front web plate 3 and improves the connection strength of the front web plate 3 and the middle support in the axial direction.

As shown in fig. 5 and 6, the middle support 1 is mounted at the front part of the excavator bucket rod, holes matched with the shapes of the radial protrusion welding parts at two ends of the middle support 1 are formed in the front web plates 3 at two sides of the bucket rod, and the radial protrusion welding parts 20 are welded with the front web plates in the holes. Two bushing installation positions 11 are respectively arranged at two ends of an inner hole of the middle support 1, and a pin shaft connected with the rocker is inserted into the inner hole of the bushing 40. The center of the bush 40 is provided with an oil groove 41, and the inner side end of the threaded hole 30 on the middle support 1 is communicated with the oil groove on the same side bush 40. A grease nipple 55 is mounted in the threaded hole 30 for injecting grease between the pin and the bushing.

The utility model discloses in, to the filling port setting of filling butter in 1 hole of well support at the tip of well support, avoided well support middle part welding yellow oil pipe's drawback again, the reliability improves, and manufacturing is simple.

Claims (10)

1. The utility model provides a bucket rod uses well support, structure as an organic whole, its includes the tubulose main part, is close to the radial protruding weld part that the position of tip set up at the main part both ends, its characterized in that every one end be provided with the screw hole that is used for installing the grease nipple on the axial lateral surface of radial protruding weld part, the screw hole is through hole, and its inboard end communicates with each other with the main part hole and to main part center part direction slope.

2. The middle support for the bucket arm of claim 1, wherein the threaded hole is a stepped hole, and threads of the stepped hole are arranged on the small-bore section.

3. The stick intermediate support of claim 1 or 2, wherein the intermediate support is mirror symmetric about its central plane.

4. The middle support for the bucket rod of claim 3, wherein the radial protrusion welding portion has a protrusion with a radial protrusion size larger than other portions of the radial protrusion welding portion, and the threaded hole is formed in an outer side surface of the protrusion.

5. The mid-support for a stick of bucket of claim 4, wherein a stiffener is disposed between the inner side surface of the protrusion and the main body.

6. The bucket rod center pedestal of claim 5, wherein the width of the reinforcing rib is greater than the diameter of the threaded hole.

7. The middle support for the bucket rod of claim 4, wherein the radial side surface of the protrusion is formed by a circular arc side surface at the top and side planes which are positioned at two ends of the circular arc side surface and tangent to the circular arc side surface, the radial side surface of the other part of the welding part of the radial protrusion is a cylindrical side surface, and the side plane of the protrusion is tangent to the cylindrical side surface of the other part of the welding part of the radial protrusion.

8. The stick center pedestal of any of claims 4-7, wherein the radial projection weld is stepped in the axial direction, and an inner portion near the body center has a larger radial dimension than an outer portion away from the body center.

9. An excavator arm having a mid-mount for an arm as claimed in any one of claims 1 to 8, the mid-mount radially projecting weld being located in and welded to apertures in webs on either side of the front of the arm.

10. The excavator stick of claim 9, wherein the inner bore of the middle support is provided with a bushing, and an inner end of the threaded bore is in communication with an oil groove in the bushing.

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