CN212074211U - Trackless equipment central authorities hinge structure - Google Patents

Abstract

The utility model discloses a trackless equipment central hinge structure, wherein an upper hinge component and a lower hinge component are arranged between a front frame and a rear frame, the hinge components comprise a front frame hinge frame, a rear frame hinge frame and a hinge shaft, the hinge shaft is connected with a hinge gland, two ends of the hinge gland are connected with the front frame hinge frame and the rear frame hinge frame, and a gasket is arranged between the two ends of the hinge gland; the front frame hinged frame and the rear frame hinged frame are connected with a bearing seat sleeve, a tapered roller bearing is arranged in the bearing seat sleeve, the tapered roller bearing, the bearing seat sleeve and a bearing gland are fastened, and one end face of the bearing seat sleeve and one end face of the bearing gland respectively press the end face of an outer ring of the tapered roller bearing; one end surface of the inner ring of the tapered roller bearing is contacted with the hinged shaft, and the other end surface of the inner ring of the tapered roller bearing is contacted with the end surface of the hinged gland; the utility model is convenient to install, strong in reliability and low in failure rate; the replacement is convenient, the maintenance is short in time consumption and low in cost, and the stress state before the frame body is not influenced.

Description

Trackless equipment central authorities hinge structure

The technical field is as follows:

the utility model relates to a trackless equipment central authorities hinge structure belongs to engineering machine tool mining engineering technical field.

Background art:

the central hinged structure of underground trackless equipment is an important component of trackless equipment, and the central hinged structure is connected with front and rear frames to realize flexible steering of the frames. The central hinge structure is very stressed and complex in stress condition, related parts are easy to wear and deform under continuous high-stress impact, the impact force is increased after the wear and deformation, gaps among the related parts are increased, the original stress structure is changed, and the vehicle frame is subjected to overlarge stress deformation and cracking, so that the design of a good central hinge structure is very important.

At present, a central hinge structure of underground trackless equipment adopts a pin shaft type, a spherical hinge type and a conical bearing type, and the pin shaft type, the spherical hinge type and the conical bearing type are respectively provided with advantages and disadvantages, so that the conical bearing type structure can bear horizontal force and vertical force, the rotation is more flexible, and the application range is wider. However, the conical bearing type structure is high in assembly process requirement, the structural design is often complex in order to meet the assembly process requirement, on the other hand, in the use process of underground trackless equipment, a bearing can be gradually worn along with the use time, the impact wear gap between the bearing outer sleeve connecting sleeves is enlarged, in the previous design, the frame body needs to be bored again, the dimensional tolerance required by the bearing is achieved, the mode is long in time consumption and high in processing cost, and the stress state of the frame body before can be influenced.

The utility model has the following contents:

the utility model aims to overcome the defects of the prior art and provide a trackless equipment central hinge structure.

The utility model provides a technical scheme as follows: a trackless equipment central hinge structure comprises a front frame and a rear frame, and is characterized in that an upper hinge assembly and a lower hinge assembly are symmetrically arranged between the front frame and the rear frame, the upper hinge assembly comprises a front frame upper hinge frame connected with the front frame, a rear frame upper hinge frame connected with the rear frame and an upper hinge shaft, the upper end of the upper hinge shaft is in threaded connection with a hinge upper gland, one end of the hinge upper gland is connected to the front frame upper hinge frame, and the other end of the hinge upper gland is connected to the rear frame upper hinge frame; upper gaskets are arranged between the hinged upper gland and the upper hinged frame of the front frame and between the hinged upper gland and the upper hinged frame of the rear frame; the upper hinge frame of the front frame and the upper hinge frame of the rear frame are connected with an upper bearing seat sleeve, an upper tapered roller bearing is arranged in an upper bearing seat sleeve, an outer ring of the upper tapered roller bearing, the upper bearing seat sleeve and an upper bearing pressure cover are fastened together through a fourth upper bolt and a threaded hole in the upper bearing pressure cover, and one end face of the upper bearing seat sleeve and one end face of the upper bearing pressure cover respectively compress the end face of the outer ring of the upper tapered roller bearing; one end face of the inner ring of the upper tapered roller bearing is contacted with the upper hinge shaft, the other end face of the inner ring of the upper tapered roller bearing is contacted with the end face of the upper hinge cover, and the inner ring of the upper tapered roller bearing is tightly pressed and combined with the threaded hole on the upper hinge shaft through a first upper bolt; the lower hinge assembly comprises a front frame lower hinge frame connected with the front frame, a rear frame lower hinge frame connected with the rear frame and a lower hinge shaft, the upper hinge shaft and the lower hinge shaft are arranged in a concentric manner, the lower end of the lower hinge shaft is in threaded connection with a lower hinge cover, one end of the lower hinge cover is connected below the front frame lower hinge frame, and the other end of the lower hinge cover is connected below the rear frame lower hinge frame; lower gaskets are arranged between the hinged lower gland and the lower hinged frame of the front frame and between the hinged lower gland and the lower hinged frame of the rear frame; the lower hinged frame of the front frame and the lower hinged frame of the rear frame are connected with a lower bearing sleeve, a lower tapered roller bearing is arranged in the lower bearing sleeve, a bearing outer ring of the lower tapered roller bearing, the lower bearing sleeve and a lower bearing gland are fastened together through a bolt and a threaded hole on the lower bearing gland, and one end surface of the lower bearing sleeve and one end surface of the lower bearing gland respectively press the end surface of an outer ring of the lower tapered roller bearing; one end face of the lower tapered roller bearing inner ring is in contact with a shaft shoulder of the lower hinged shaft, the other end face of the lower tapered roller bearing inner ring is in contact with the end face of the hinged lower pressing cover, and the lower tapered roller bearing inner ring and the lower hinged shaft are tightly pressed through the first lower bolt and the threaded hole in the lower hinged shaft.

Furthermore, the upper hinge shaft and the hinged upper gland are fixed through two groups of first upper bolts and gaskets which are symmetrically arranged, one end of the hinged upper gland is fastened on the hinge frame on the front frame through a second upper bolt and gasket, and the other end of the hinged upper gland is fastened on the hinge frame on the rear frame through a third upper bolt and gasket; the lower articulated shaft and the articulated lower pressure cover are fixed through two groups of first lower bolts and washers which are symmetrically arranged; one end of the hinged lower pressing cover is fastened below the front frame lower hinged frame through a second lower bolt and a gasket, and the other end of the hinged lower pressing cover is fastened below the rear frame lower hinged frame through a third lower bolt and a gasket.

The utility model has the advantages that: the utility model discloses be equipped with tapered roller bearing, bearing housing and bearing gland between car frame body and tapered roller bearing, even do not damage the original structure of automobile body after tapered roller bearing wearing and tearing yet, bearing housing and bearing gland adopt bolted connection tightly to fix tapered roller bearing outer lane moreover, on adjusting tapered roller bearing position and pretightning force, through the adjustment of adjusting shim, have guaranteed the technological requirement of tapered roller bearing installation. The utility model discloses be convenient for install, can guarantee the assembly process requirement of bearing, the good reliability, the fault rate is low. And after the bearing is worn, only need to change corresponding seat cover and bearing can, need not to reprocess the automobile body, maintenance consuming time is short, the expense is low, does not influence the stress state before the automobile frame body.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows: the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:

as shown in figure 1, the trackless equipment central hinge structure comprises a front frame 3 and a rear frame 4, wherein an upper hinge assembly and a lower hinge assembly are symmetrically arranged between the front frame 3 and the rear frame 4, the upper hinge assembly 1 comprises a front frame upper hinge frame 1-12 connected with the front frame 3, a rear frame upper hinge frame 1-11 connected with the rear frame 4 and an upper hinge shaft 1-4, the upper end of the upper hinge shaft 1-4 is in threaded connection with a hinge upper gland 1-5 and is fixed through two groups of first upper bolts 1-8 and gaskets which are symmetrically arranged, and therefore the upper hinge shaft 1-4 can be rapidly assembled and disassembled. One end of the hinged upper gland 1-5 is fastened on the hinged frame 1-12 on the front frame through a second upper bolt 1-6 and a gasket, and the other end of the hinged upper gland 1-5 is fastened on the hinged frame 1-11 on the rear frame through a third upper bolt 1-7 and a gasket; upper gaskets 1-9 are arranged between the hinged upper gland 1-5 and the hinged frames 1-12 on the front frame and 1-11 on the rear frame. The upper hinge frame 1-12 of the front frame and the upper hinge frame 1-11 of the rear frame are connected with an upper bearing sleeve 1-2 in a welding mode, an upper tapered roller bearing 1-3 is arranged in the upper bearing sleeve 1-2, a bearing outer ring of the upper tapered roller bearing 1-3, the upper bearing sleeve 1-2 and an upper bearing cover 1-1 are fastened together through a fourth upper bolt 1-10 and a threaded hole in the upper bearing cover 1-1, one end face of the upper bearing sleeve 1-2 and one end face of the upper bearing cover 1-1 respectively press the end face of the outer ring of the upper tapered roller bearing 1-3 to tightly fix the upper bearing sleeve 1-2 and the upper bearing cover 1-1, and the upper bearing sleeve, the upper bearing sleeve and the upper bearing. One end face of an inner ring of the upper tapered roller bearing 1-3 is contacted with an upper hinge shaft 1-4, the other end face is contacted with an end face of a hinge upper gland 1-5, and the inner ring is tightly pressed and combined with a threaded hole on the upper hinge shaft 1-4 through a first upper bolt 1-8; the hinged upper gland 1-5 applies pretightening force to the upper hinged shaft 1-4, so that the upper end face and the lower end face of the inner ring of the upper tapered roller bearing 1-3 are tightly attached to the end face of the hinged upper gland 1-5 and the end face of the upper hinged shaft 1-4. Therefore, the inner ring and the outer ring of the upper tapered roller bearing 1-3 can be tightly fixed, and the bearing is prevented from being excessively worn and damaged due to untight matching. The upper tapered roller bearing 1-3 is arranged in the upper bearing sleeve 1-2, even if the upper tapered roller bearing 1-3 is impacted and damaged in a clearance, the inner contact surface of the upper bearing sleeve 1-2 is firstly impacted in an abrasion mode, a hinged hole in the frame after abrasion is avoided, and the difficulty and the operation time of maintenance and repair are reduced.

The lower hinge member 2 has substantially the same construction as the upper hinge member 1. The upper articulated shafts 1-4 and the lower articulated shafts 2-4 are arranged in a concentric manner, the lower articulated assembly 2 comprises front frame lower articulated frames 2-12 connected with the front frame 3, rear frame lower articulated frames 2-11 connected with the rear frame 4 and lower articulated shafts 2-4, the lower ends of the lower articulated shafts 2-4 are in threaded connection with lower pressing covers 2-5 and are fixed through two groups of first lower bolts 2-8 and gaskets which are symmetrically arranged, and therefore the upper articulated shafts 1-4 can be quickly disassembled and assembled. One end of the hinged lower gland 2-5 is fastened below a lower hinged frame 2-12 of the front frame through a second lower bolt 2-6 and a gasket, and the other end of the hinged lower gland 2-5 is fastened below a lower hinged frame 2-11 of the rear frame through a third lower bolt 2-7 and a gasket; lower gaskets 2-9 are arranged between the hinged lower gland 2-5 and the lower hinged frame 2-12 of the front frame and the lower hinged frame 2-11 of the rear frame. The front frame lower hinged frame 2-12 and the rear frame lower hinged frame 2-11 are connected with the lower bearing sleeve 2-2 in a welding mode, the lower tapered roller bearing 2-3 is arranged in the lower bearing sleeve 2-2, a bearing outer ring of the lower tapered roller bearing 2-3, the lower bearing sleeve 2-2 and the lower bearing gland 2-1 are fastened together through a fourth lower bolt 2-10 and a threaded hole in the lower bearing gland 2-1, and one end face of the lower bearing sleeve 2-2 and one end face of the lower bearing gland 2-1 respectively press the end face of the outer ring of the lower tapered roller bearing 2-3 to tightly fix the end faces so that the front frame lower hinged frame 2-12 and the rear frame lower hinged frame 2-11 form a whole. One end surface of the inner ring of the lower tapered roller bearing 2-3 is contacted with the shaft shoulder of the lower articulated shaft 2-4, the other end surface is contacted with the end surface of the articulated lower gland 2-5, and the first lower bolt 2-8 and the threaded hole on the lower articulated shaft 2-4 are tightly pressed. Therefore, the inner ring and the outer ring of the lower tapered roller bearing 2-3 can be tightly fixed, and the bearing is prevented from being excessively worn and damaged due to untight matching. The lower tapered roller bearing 2-3 is arranged in the lower bearing sleeve 2-2, even if the lower tapered roller bearing 2-3 is impacted and damaged in a clearance mode, the inner contact surface of the lower bearing sleeve 2-2 is firstly impacted in an abrasion mode, the lower hinged hole of the frame after abrasion damage is avoided, and the difficulty and the operation time of maintenance and repair are reduced.

The relative positions of the front frame 3 and the rear frame 4 can be adjusted by adjusting the thicknesses of the upper gaskets 1-9 and the lower gaskets 2-9. Therefore, the front frame 3 and the rear frame 4 can flexibly rotate under the action of the upper tapered roller bearings 1-3 and the lower tapered roller bearings 2-3, and the structural design can ensure that the inner ring and the outer ring of the bearings are accurately installed and the pretightening force is accurately controlled.

It should be understood that parts of the specification not set forth in detail are well within the prior art. The above description of the preferred embodiments is in great detail, but should not be construed as limiting the scope of the invention.

Claims (2)

1. A trackless equipment central hinge structure comprises a front frame (3) and a rear frame (4), and is characterized in that an upper hinge assembly and a lower hinge assembly are symmetrically arranged between the front frame (3) and the rear frame (4), the upper hinge assembly (1) comprises a front frame upper hinge frame (1-12) connected with the front frame (3), a rear frame upper hinge frame (1-11) connected with the rear frame (4) and an upper hinge shaft (1-4), the upper end of the upper hinge shaft (1-4) is in threaded connection with an upper hinge gland (1-5), one end of the upper hinge gland (1-5) is connected to the front frame upper hinge frame (1-12), and the other end of the upper hinge gland (1-5) is connected to the rear frame upper hinge frame (1-11); upper gaskets (1-9) are arranged between the hinged upper gland (1-5) and the upper hinged frame (1-12) of the front frame and the upper hinged frame (1-11) of the rear frame; an upper bearing sleeve (1-2) is connected with an upper hinged frame (1-12) of the front frame and an upper hinged frame (1-11) of the rear frame, an upper tapered roller bearing (1-3) is arranged in the upper bearing sleeve (1-2), an outer bearing ring of the upper tapered roller bearing (1-3), the upper bearing sleeve (1-2) and an upper bearing cover (1-1) are fastened together through a fourth upper bolt (1-10) and a threaded hole in the upper bearing cover (1-1), and one end face of the upper bearing sleeve (1-2) and one end face of the upper bearing cover (1-1) respectively compress the end face of the outer ring of the upper tapered roller bearing (1-3); one end face of an inner ring of the upper tapered roller bearing (1-3) is contacted with the upper hinge shaft (1-4), the other end face is contacted with the end face of the upper hinge cover (1-5), and the inner ring is tightly pressed and combined with a threaded hole on the upper hinge shaft (1-4) through a first upper bolt (1-8); the lower hinge assembly (2) comprises a front frame lower hinge frame (2-12) connected with the front frame (3), a rear frame lower hinge frame (2-11) connected with the rear frame (4) and a lower hinge shaft (2-4), the upper hinge shaft (1-4) and the lower hinge shaft (2-4) are arranged in a concentric manner, the lower end of the lower hinge shaft (2-4) is connected with a hinge lower gland (2-5) in a threaded manner, one end of the hinge lower gland (2-5) is connected below the front frame lower hinge frame (2-12), and the other end of the hinge lower gland (2-5) is connected below the rear frame lower hinge frame (2-11); lower gaskets (2-9) are arranged between the hinged lower gland (2-5) and the lower hinged frame (2-12) of the front frame and the lower hinged frame (2-11) of the rear frame; the front frame lower hinged frame (2-12) and the rear frame lower hinged frame (2-11) are connected with a lower bearing sleeve (2-2), a lower tapered roller bearing (2-3) is arranged in the lower bearing sleeve (2-2), a bearing outer ring of the lower tapered roller bearing (2-3), the lower bearing sleeve (2-2) and a lower bearing gland (2-1) are fastened together through a bolt (2-10) and a threaded hole in the lower bearing gland (2-1), and one end face of the lower bearing sleeve (2-2) and one end face of the lower bearing gland (2-1) respectively press the end face of an outer ring of the lower tapered roller bearing (2-3); one end face of the inner ring of the lower tapered roller bearing (2-3) is contacted with the shaft shoulder of the lower hinged shaft (2-4), the other end face is contacted with the end face of the hinged lower gland (2-5), and the lower tapered roller bearing is tightly pressed and connected with the threaded hole on the lower hinged shaft (2-4) through a first lower bolt (2-8).

2. A trackless equipment central hinge structure according to claim 1, characterized in that the upper hinge shaft (1-4) and the upper hinge cover (1-5) are fixed by two sets of first upper bolts (1-8) and washers which are symmetrically arranged, one end of the upper hinge cover (1-5) is fastened on the upper hinge frame (1-12) of the front frame by the second upper bolts (1-6) and washers, and the other end of the upper hinge cover (1-5) is fastened on the upper hinge frame (1-11) of the rear frame by the third upper bolts (1-7) and washers; the lower articulated shaft (2-4) and the articulated lower gland (2-5) are fixed through two groups of first lower bolts (2-8) which are symmetrically arranged and a gasket; one end of the hinged lower gland (2-5) is fastened below the lower hinged frame (2-12) of the front frame through a second lower bolt (2-6) and a gasket, and the other end of the hinged lower gland (2-5) is fastened below the lower hinged frame (2-11) of the rear frame through a third lower bolt (2-7) and a gasket.

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