Front axle swinging device of underground mine car

Abstract

The utility model relates to a front axle swinging device of an underground mine car, which comprises a frame fixing beam I and a frame fixing beam II which are fixedly connected with a front frame, a swinging frame assembly is movably arranged between the frame fixing beam I and the frame fixing beam II, and a front axle is arranged on the swinging frame assembly; the swing frame assembly comprises a swing frame welding piece of a box type structure, a left pressing plate, a right pressing plate and bolt sets, wherein the left pressing plate and the right pressing plate are symmetrically arranged on the two end sides of the top of the swing frame welding piece, and the bolt sets are used for connecting the left pressing plate and the right pressing plate with the swing frame welding piece respectively. After the front axle is arranged between the swing frame welding piece and the pressing plate, the front axle is installed and fixed through the bolt set, then the front axle swing device is promoted to be installed on a front frame to achieve front axle swing through the front pin shaft, the rear pin shaft and other parts used in cooperation with the pin shafts in the scheme, the structure is simple, installation and maintenance are easy, and the front axle swing device is suitable for popularization and application. The method is more suitable for under-mine driving conditions, facilitates a driver to anticipate dangers in time, and is high in safety coefficient.

Description

Technical Field

[0001] The utility model relates to the technical field of underground mine transportation machinery, in particular to a front axle swinging device of an underground mine transport vehicle. Background Art

[0002] The underground ore transporter is the main equipment for trackless transportation in underground mines. It is mainly composed of a front frame, a rear frame, a carriage, a power transmission system, a hydraulic system, an electrical system, etc. The frame structure adopts an articulated frame, and a double-cylinder bending steering form to reduce the turning radius and improve the vehicle's passability. Due to the complex underground environment and the common potholes on the road, the underground ore transporter needs to have a certain up and down swing ability to improve the vehicle's overturning stability.

[0003] The common swing device of underground mining trucks adopts the central rotation form of the front and rear frames, that is, a rotating structure is set near the hinge of the rear frame. When the road surface is bumpy, the front and rear frames swing relative to each other. This form has a complex structure, high requirements on the strength and sealing of the central rotating structure, and is not easy to maintain. Under heavy loads, the front and rear axles bear a large load, the inertia is large when the frames swing relative to each other, and the stability risk is high. At the same time, this structure makes the relative swing of the front and rear frames a normal situation, which can easily make the driver's road sense worse and unable to predict danger in time.

[0004] After searching, the announcement number CN219115163U discloses a central articulated steering structure, including a front frame, a rear frame, an articulated mechanism and a driving member, wherein: the front frame and the rear frame are connected by an articulated mechanism; the driving member is installed in the front frame, and is used to drive the articulated mechanism to drive the rear frame to steer. In the disclosed patent, the central articulated steering structure proposed has a simple overall structure and convenient connection, which is convenient for the front frame of the vehicle to drive the rear frame to steer and swing, which is conducive to reducing the turning radius, and has low performance requirements and control requirements for the vehicle, which is conducive to practical use. The central articulated steering structure of this patent application can solve the problems of complex traditional axle structure and inconvenience in use, but it still cannot solve the problems existing in the actual use of underground mining vehicles, and is not suitable for use as underground mining vehicles. Utility Model Content

[0005] The utility model provides a front axle swinging device of an underground ore transport vehicle to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A front axle swing device for an underground mining vehicle comprises a frame fixing beam 1 and a frame fixing beam 2 fixedly connected to a front frame, a swing frame assembly is movably installed between the frame fixing beam 1 and the frame fixing beam 2, and a front axle is arranged on the swing frame assembly;

[0008] The swing frame assembly includes a swing frame weldment of a box-shaped structure, a left pressure plate and a right pressure plate symmetrically arranged at both ends of the top of the swing frame weldment, and a bolt group used to connect the left pressure plate and the right pressure plate to the swing frame weldment respectively, and the front axle is fixedly mounted on the swing frame weldment through the left pressure plate, the right pressure plate and the bolt group;

[0009] Coaxially arranged pin holes are respectively opened on the front and rear ends of the swing frame welding part, and the front and rear pin holes are correspondingly provided with front pin shafts, rear pin shafts and shaft sleeves respectively matched with the front pin shaft and the rear pin shaft. The frame fixed beam 1 and the frame fixed beam 2 are respectively installed on the swing frame assembly through the corresponding front pin shaft and rear pin shaft.

[0010] Preferably, grooves are respectively provided on the outer end surfaces of the pin holes at the front and rear ends, and a sealing ring is respectively installed in the two grooves.

[0011] Preferably, annular grooves are respectively provided at the tail portions of the inner end surfaces of the pin holes at the front and rear ends, and sealing rings 2 are respectively installed in the two annular grooves.

[0012] Preferably, a front baffle is installed on the inner end surface side of the pin hole at the front end, and a rear baffle is installed on the inner end surface side of the pin hole at the rear end.

[0013] Preferably, the first frame fixing beam and the second frame fixing beam are respectively provided with circumferentially distributed through holes on their surfaces that are away from each other, and the two groups of through holes are respectively connected to the corresponding front pin shaft and rear pin shaft through bolts;

[0014] Preferably, the first and second frame fixing beams are provided with coaxially arranged inner stop holes on their surfaces close to each other, and the annular bosses on the large ends of the front and rear pin shafts are respectively arranged in the corresponding inner stop holes.

[0015] Preferably, an upper clamp and a lower clamp which are connected as one body are provided at the shoulder of the rear pin shaft, the upper clamp is provided with a smooth hole, the lower clamp is provided with a threaded hole, and the lower clamp is connected as one body with the upper clamp by bolts.

[0016] Preferably, a top screw hole is provided at a middle position of the second frame fixing beam, and an adjustment gasket is provided between the top screw hole on the second frame fixing beam and the rear pin shaft.

[0017] Preferably, the adjusting gasket has a semicircular shape, and the adjusting gasket has a straight-edge surface with evenly distributed semi-U-shaped grooves, and a plurality of distributed semi-U-shaped grooves are symmetrically arranged.

[0018] Preferably, a raised semicircular mounting portion is provided on the arc-shaped side surface of the adjusting gasket, and the semicircular mounting portion is arranged at the center of the arc-shaped side surface of the adjusting gasket.

[0019] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0020] In the utility model, after the front axle is arranged between the swing frame welding part and the pressure plate, the front axle is installed and fixed by using a bolt group, and then the front pin shaft, the rear pin shaft and other components used in conjunction with the pin shaft in this scheme are used to promote the front axle swing device to be installed on the front frame to realize the front axle swing. The structure is simple, easy to install and maintain, more suitable for underground driving conditions, and conducive to the driver to timely predict danger, and the safety factor is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the front axle swing device according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a front axle swing device according to an embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the overall structure of the swing frame assembly of an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the front pin shaft and the rear pin shaft structure of an embodiment of the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of an adjusting gasket according to an embodiment of the utility model.

[0026] In the figure: 1, front axle; 2, frame fixed beam 1; 3, front fender; 4, front pin shaft;

[0027] 5. Swing frame assembly; 501. Swing frame welding parts; 502. Sealing ring 1; 503. Bolt group; 504. Left pressure plate; 505. Sealing ring 2; 506. Right pressure plate;

[0028] 6. Rear fender; 7. Bushing; 8. Lower clamp; 9. Adjustment gasket; 10. Rear pin shaft; 11. Frame fixing beam 2; 12. Upper clamp. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0031] The front and rear vehicles of underground mining trucks with articulated frames should have a certain ability to swing up and down to improve the overturning stability of the vehicle on bumpy roads. The common swing device of underground mining trucks adopts the central rotation of the front and rear frames, that is, a rotating structure is set near the hinge of the rear frame. When the road surface is bumpy, the front and rear frames swing relative to each other. This form has a complex structure, high requirements on the strength and sealing of the central rotating structure, and is not easy to maintain. Under heavy loads, the front and rear axles bear a large load, and the inertia is large when the frames swing relative to each other, and the stability risk is high. At the same time, this structure makes the relative swing of the front and rear frames a normal situation, which can easily make the driver's road sense worse and unable to predict danger in time.

[0032] In view of this, if Figures 1 to 5 As shown, in one aspect of the present disclosure, a front axle swing device of an underground mining vehicle is provided, comprising a frame fixing beam 1 2 and a frame fixing beam 2 11 fixedly connected to a front frame, a swing frame assembly 5 is movably installed between the frame fixing beam 1 2 and the frame fixing beam 2 11, a front axle 1 is arranged on the swing frame assembly 5, the frame fixing beam 1 2 and the frame fixing beam 2 11 are fixed on the front frame, and the frame fixing beam 1 2 and the frame fixing beam 2 11 are spaced a certain distance apart for installing the swing frame assembly 5;

[0033] The swing frame assembly 5 includes a swing frame weldment 501 of a box-shaped structure, a left pressure plate 504 and a right pressure plate 506 symmetrically arranged at both ends of the top of the swing frame weldment 501, and a bolt group 503 used to connect the left pressure plate 504 and the right pressure plate 506 to the swing frame weldment 501 respectively. The front axle 1 is fixedly installed on the swing frame weldment 501 through the left pressure plate 504, the right pressure plate 506 and the bolt group 503, and a front axle mounting plate is provided on the swing frame weldment 501 to serve as a bottom plate for installing the front axle 1.

[0034] Coaxially arranged pin holes are respectively provided on the front and rear ends of the swing frame weldment 501, and the front and rear pin shafts 4, the rear pin shaft 10 and the shaft sleeves 7 respectively matched with the front and rear pin shafts 4 and the rear pin shaft 10 are correspondingly arranged in the pin holes at the front and rear ends. The frame fixed beam 1 2 and the frame fixed beam 2 11 are respectively installed on the swing frame assembly 5 through the corresponding front pin shaft 4 and the rear pin shaft 10.

[0035] The shaft sleeve 7 is installed in the front and rear pin holes of the swing frame assembly 5, and is matched with the small end annular surfaces of the front pin shaft 4 and the rear pin shaft 10.

[0036] Grooves are respectively provided on the outer end faces of the pin holes at the front and rear ends, and sealing rings 502 are respectively installed in the two grooves; annular grooves are respectively provided at the tail ends of the inner end faces of the pin holes at the front and rear ends, and sealing rings 505 are respectively installed in the two annular grooves; a front baffle plate 3 is installed on the inner end face side of the pin hole at the front end, and a rear baffle plate 6 is installed on the inner end face side of the pin hole at the rear end, which are used to seal the small ends of the front pin shaft 4 and the rear pin shaft 10 to prevent dust from entering the interior and accelerating the wear of the small ends of the pin shafts.

[0037] After the front axle 1 is arranged between the swing frame welding part 501 and the pressure plate, the front axle 1 is installed and fixed by the bolt group 503, and then the front pin shaft 4, the rear pin shaft 10 and other components used in conjunction with the pin shaft in this scheme are used to facilitate the installation of the front axle swing device on the front frame. The swing of the front axle is achieved by the swing device with two front and rear hinge points, providing an underground mining vehicle with a swing structure that is simple in structure, easy to install, and more suitable for underground driving conditions.

[0038] Circumferentially distributed through holes are respectively provided on the sides of the frame fixing beam 1 2 and the frame fixing beam 2 11 that are away from each other, and the two groups of through holes are respectively connected to the corresponding front pin shaft 4 and the rear pin shaft 10 by bolts; coaxially arranged inner stop holes are respectively opened on the sides of the frame fixing beam 1 2 and the frame fixing beam 2 11 that are close to each other, and the annular bosses on the large ends of the front pin shaft 4 and the rear pin shaft 10 are respectively arranged in the corresponding inner stop holes.

[0039] The front pin shaft 4 and the rear pin shaft 10 are both variable-section pin shafts, and their large end heads are provided with threaded holes and annular bosses, which are connected to the frame fixing beam 1 2 and the frame fixing beam 2 11 by bolts. At the same time, the annular bosses correspond to the inner stop holes on the frame fixing beam 1 2 and the frame fixing beam 2 11.

[0040] An upper clamp 12 and a lower clamp 8 are integrally connected at the shoulder of the rear pin shaft 10. The upper clamp 12 is provided with a smooth hole, the lower clamp 8 is provided with a threaded hole, and the lower clamp 8 is integrally connected to the upper clamp 12 by bolts.

[0041] A top screw hole is provided at the middle position of the frame fixed beam 11, and an adjustment gasket 9 is provided between the top screw hole on the frame fixed beam 11 and the rear pin shaft 10. The top screw is used to adjust the gap between the overall structure of the swing frame assembly 5 and the fixed beam, and the adjustment gasket 9 is installed at the same time to make the axial gap of the swing device appropriate.

[0042] The outer shape of the adjusting gasket 9 is semicircular, and the adjusting gasket 9 is provided with evenly distributed semi-U-shaped grooves on a straight side, and a plurality of distributed semi-U-shaped grooves are symmetrically arranged.

[0043] A raised semicircular mounting portion is provided on the arc-shaped side surface of the adjusting gasket 9 , and the semicircular mounting portion is arranged at the center of the arc-shaped side surface of the adjusting gasket 9 .

[0044] In the present utility model, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The term "and / or" used in this article includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0045] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0046] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A front axle swing device for an underground mining vehicle, characterized in that: It comprises a first frame fixing beam (2) and a second frame fixing beam (11) fixedly connected to the front frame, a swing frame assembly (5) is movably installed between the first frame fixing beam (2) and the second frame fixing beam (11), and a front axle (1) is arranged on the swing frame assembly (5); The swing frame assembly (5) comprises a swing frame weldment (501) of a box-shaped structure, a left pressure plate (504) and a right pressure plate (506) symmetrically arranged at both ends of the top of the swing frame weldment (501), and a bolt group (503) used to connect the left pressure plate (504) and the right pressure plate (506) to the swing frame weldment (501), respectively; the front axle (1) is fixedly mounted on the swing frame weldment (501) via the left pressure plate (504), the right pressure plate (506) and the bolt group (503); Coaxially arranged pin holes are respectively provided at the front and rear ends of the swing frame weldment (501), and the pin holes at the front and rear ends are correspondingly provided with a front pin shaft (4), a rear pin shaft (10), and axle sleeves (7) respectively matched with the front pin shaft (4) and the rear pin shaft (10), and the frame fixing beam 1 (2) and the frame fixing beam 2 (11) are respectively installed on the swing frame assembly (5) through the corresponding front pin shaft (4) and rear pin shaft (10).

2. The front axle swinging device of an underground mining vehicle according to claim 1, characterized in that: Grooves are respectively provided on the outer end surfaces of the pin holes at the front and rear ends, and sealing rings (502) are respectively installed in the two grooves.

3. The front axle swinging device of an underground mining vehicle according to claim 2, characterized in that: Annular grooves are respectively provided at the tails of the inner end surfaces of the pin holes at the front and rear ends, and sealing rings (505) are respectively installed in the two annular grooves.

4. The front axle swinging device of an underground mining vehicle according to claim 3, characterized in that: A front baffle (3) is installed on the inner end surface side of the pin hole at the front end, and a rear baffle (6) is installed on the inner end surface side of the pin hole at the rear end.

5. The front axle swinging device of an underground mining vehicle according to claim 1, characterized in that: The first frame fixing beam (2) and the second frame fixing beam (11) are respectively provided with circumferentially distributed through holes on a surface away from each other, and the two groups of through holes are respectively connected to the corresponding front pin shaft (4) and rear pin shaft (10) via bolts.

6. The front axle swinging device of an underground mining vehicle according to claim 1, characterized in that: The first frame fixing beam (2) and the second frame fixing beam (11) are respectively provided with coaxially arranged inner stop holes on their surfaces close to each other, and the annular bosses on the large ends of the front pin shaft (4) and the rear pin shaft (10) are respectively arranged in the corresponding inner stop holes.

7. The front axle swinging device of an underground mining vehicle according to claim 1, characterized in that: An upper clamp (12) and a lower clamp (8) connected in one piece are provided at the shoulder of the rear pin shaft (10); a light hole is provided on the upper clamp (12); a threaded hole is provided on the lower clamp (8); and the lower clamp (8) is connected in one piece to the upper clamp (12) via bolts.

8. The front axle swinging device of an underground mining vehicle according to claim 1, characterized in that: A top screw hole is provided at the middle position of the second frame fixing beam (11), and an adjustment gasket (9) is provided between the top screw hole on the second frame fixing beam (11) and the rear pin shaft (10).

9. The front axle swinging device of an underground mining vehicle according to claim 8, characterized in that: The adjusting gasket (9) has a semicircular shape, and the adjusting gasket (9) has a straight-side surface with evenly distributed semi-U-shaped grooves, and the multiple distributed semi-U-shaped grooves are symmetrically arranged.

10. The front axle swinging device of an underground mining vehicle according to claim 9, characterized in that: A raised semicircular mounting portion is provided on the arc-shaped side surface of the adjusting gasket (9), and the semicircular mounting portion is arranged at the center of the arc-shaped side surface of the adjusting gasket (9).

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