Mining gear selecting and shifting mechanism assembly and mining truck

Abstract

The utility model provides a mining gear selecting and shifting mechanism assembly which comprises a gearbox, a fixing base, a gear shifting flexible shaft assembly and a gear selecting flexible shaft assembly, the fixing base is fixedly connected to the gearbox, the gearbox comprises a gear shifting rocker arm and a gear selecting rocker arm, one end of the gear shifting flexible shaft assembly is connected with the fixing base, and the other end of the gear selecting flexible shaft assembly is connected with the gear selecting rocker arm. One end of the gear-shifting flexible shaft assembly is connected with the gear-shifting rocker arm, the other end of the gear-shifting flexible shaft assembly is connected with the gear-shifting rocker arm, the plane where the push-pull stroke of the gear-shifting flexible shaft assembly is located is parallel to or coincides with the plane where the gear-shifting rocker arm is located when the gear-shifting rocker arm rotates, one end of the gear-selecting flexible shaft assembly is connected with the fixed seat, and the other end of the gear-selecting flexible shaft assembly is connected with the gear-selecting rocker arm. The plane where the push-pull stroke of the gear selecting flexible shaft assembly is located is parallel to or coincides with the plane where the gear selecting rocker arm rotates. According to the mining gear selecting and shifting mechanism assembly, a driver can operate the mining gear selecting and shifting mechanism assembly accurately, conveniently and rapidly, the hand feeling is good, and the fatigue life of the mining gear selecting and shifting mechanism assembly is prolonged. The utility model further relates to a mine truck.

Description

Technical Field

[0001] This utility model relates to the field of basic construction technology, and in particular to a mining gear shifting mechanism assembly and a mining vehicle. Background Technology

[0002] Mining off-highway dump trucks operate in harsh environments and require high power output, thus necessitating the use of large-scale manual transmissions with significant shifting forces. This, in turn, increases the load on the shifting cable assembly during gear changes. Furthermore, the cable routing of the shifting cable directly affects its stroke and load efficiency. Current technology has not yet resolved this issue, therefore a fixed bracket for the shifting cable needs to be designed. This bracket must minimize the direct load on the cable assembly while ensuring smooth cable routing (i.e., a large bending radius, reducing friction between the cable core and the protective tube), thereby achieving high stroke and load efficiency. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a mining gear shifting mechanism assembly that enables the driver to operate accurately, easily, quickly and with good feel, thereby improving the fatigue life of the mining gear shifting mechanism assembly.

[0004] This utility model provides a mining gear shifting mechanism assembly, including a gearbox, a fixed base, a shifting flexible shaft assembly, and a selection flexible shaft assembly. The fixed base is fixedly connected to the gearbox. The gearbox includes a shift rocker arm and a selection rocker arm. One end of the shifting flexible shaft assembly is connected to the fixed base, and the other end is connected to the shift rocker arm. The plane of the push-pull stroke of the shifting flexible shaft assembly is parallel or coincident with the plane of the shift rocker arm during rotation. One end of the selection flexible shaft assembly is connected to the fixed base, and the other end is connected to the selection rocker arm. The plane of the push-pull stroke of the selection flexible shaft assembly is parallel or coincident with the plane of the selection rocker arm during rotation.

[0005] In one embodiment, when the gearbox is in neutral, the shift rocker arm is vertically positioned and the shift cable assembly is horizontally positioned.

[0006] In one embodiment, the gear selection flexible shaft assembly is horizontally arranged, and the line connecting the rotation center point of the gear selection rocker arm and the center of the fixing hole is perpendicular to the rod end of the gear selection flexible shaft assembly.

[0007] In one embodiment, the fixed base includes an upright plate, a first connecting plate, and a second connecting plate. The first connecting plate and the second connecting plate are disposed opposite to each other. The upright plate is vertically connected to the first connecting plate and the second connecting plate. The shift flexible shaft assembly is connected to the upright plate. The gear selection flexible shaft assembly is connected to the first connecting plate. The second connecting plate is fixedly connected to the gearbox.

[0008] In one embodiment, the fixing base further includes a reinforcing member, which is fixedly connected between the first connecting plate and the second connecting plate.

[0009] In one embodiment, the shift flexible shaft assembly is connected to the upright plate via a first fixing member, the first fixing member including a first fixing part and a first connecting part fixedly connected, the first fixing part being connected to the shift flexible shaft assembly, and the first connecting part being connected to the upright plate; the gear selection flexible shaft assembly is connected to the first connecting plate via a second fixing member, the second fixing member including a second fixing part and a second connecting part fixedly connected, the second fixing part being connected to the gear selection flexible shaft assembly, and the second connecting part being connected to the first connecting plate.

[0010] In one embodiment, the second connecting plate is connected to the gearbox via at least four first fasteners. The plane containing the four first fasteners is defined as a fixed surface. The maximum vertical distance between the path point of the plane where the shift rocker arm rotates and the fixed surface is defined as a first distance. The length of the first fixed part is less than the first distance. The maximum vertical distance between the path point of the plane where the shift rocker arm rotates and the fixed surface is defined as a second distance. The length of the second fixed part is less than the second distance.

[0011] In one embodiment, the first fixing part includes a first fitting and a second fitting. The first fitting has a first groove, and the second fitting has a second groove. When the first fitting and the second fitting cooperate, the first groove and the second groove form a first through hole, and one end of the gear shifting flexible shaft assembly passes through the first through hole. The second fixing part includes a third fitting and a fourth fitting. The third fitting has a third groove, and the fourth fitting has a fourth groove. When the third fitting and the fourth fitting cooperate, the third groove and the fourth groove form a second through hole, and one end of the gear shifting flexible shaft assembly passes through the second through hole.

[0012] In one embodiment, the first assembly is U-shaped, and the third assembly is U-shaped.

[0013] This utility model also relates to a mining vehicle, including the above-mentioned mining gear shifting mechanism assembly.

[0014] In this utility model, the shifting flexible shaft assembly of the mining gear shifting mechanism is connected between the shifting rocker arm and the fixed base. The plane of the push-pull stroke of the shifting flexible shaft assembly is parallel or coincident with the plane of the shifting rocker arm during rotation. The selection flexible shaft assembly is connected between the selection rocker arm and the fixed base, and the plane of the push-pull stroke of the selection flexible shaft assembly is parallel or coincident with the plane of the selection rocker arm during rotation. This ensures that the direct load on the flexible shaft assembly is small, while also allowing for smooth routing of the flexible shaft, resulting in a large bending radius and a smooth connection between the flexible shaft axis and the surrounding structure. The friction between them is smaller, resulting in higher stroke efficiency and load efficiency. This ensures that the torque of the gear selection flexible shaft assembly and the gear shift flexible shaft assembly is maximized during the push-pull process, improving gear shifting efficiency. At the same time, it reduces the load on the ball joints at the ends of the gear shift flexible shaft assembly and the gear selection flexible shaft assembly. This not only allows the driver to operate accurately, easily, quickly, and with a good feel, but also ensures that the strength of the selected flexible shaft meets the actual use requirements, improving the fatigue life of the mining gear shift mechanism assembly. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the gear shifting flexible shaft assembly of this utility model.

[0017] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 yes Figure 1 A magnified structural diagram at point B in the middle.

[0019] Figure 4 This is a front view structural diagram of the gear shifting flexible shaft assembly of this utility model.

[0020] Figure 5 This is a top view of the gear shifting flexible shaft assembly of this utility model.

[0021] Figure 6 This is a structural schematic diagram of the fixing base of this utility model.

[0022] Reference numerals: Gearbox - 11; Shift rocker arm - 111; Selector rocker arm - 112; Mounting base - 12; Vertical plate - 121; First part - 1211; Second part - 1212; First connecting plate - 122; Second connecting plate - 123; Third part - 1231; Fourth part - 1232; Reinforcing member - 124; Shift flexible shaft assembly - 13; Selector flexible shaft assembly - 14; First fixing member - 15; First fixing part - 151; First assembly - 1511; Second assembly - 1512; First connecting part - 152; Second fixing member - 16; Second fixing part - 161; Third assembly - 1611; Fourth assembly - 1612; Second connecting part - 162; First fastener - 17.

[0023] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0028] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0029] like Figures 1 to 6 As shown, the mining gear shifting mechanism assembly is used in the vehicle's transmission control system. The mining gear shifting mechanism assembly includes a gearbox 11, a fixed base 12, a shift flexible shaft assembly 13, and a selection flexible shaft assembly 14. The fixed base 12 is fixedly connected to the gearbox 11. The gearbox 11 includes a shift rocker arm 111 and a selection rocker arm 112. One end of the shift flexible shaft assembly 13 is connected to the fixed base 12, and the other end is connected to the shift rocker arm 111. The plane of the push-pull stroke of the shift flexible shaft assembly 13 is parallel to the plane of the shift rocker arm 111 during rotation. The planes on which the gear shift flexible shaft assembly 13 is located are parallel or coincident with each other. The plane on which the gear shift flexible shaft assembly 13 is located during its push-pull stroke refers to the plane formed by the compression or relaxation of the spring on the gear shift flexible shaft assembly 13. One end of the gear selection flexible shaft assembly 14 is connected to the fixed seat 12, and the other end of the gear selection flexible shaft assembly 14 is connected to the gear selection rocker arm 112. The plane on which the gear selection flexible shaft assembly 14 is located during its push-pull stroke is parallel or coincident with the plane on which the gear selection rocker arm 112 rotates. The plane on which the gear selection flexible shaft assembly 14 is located during its push-pull stroke refers to the plane formed by the compression or relaxation of the spring on the gear selection flexible shaft assembly 14. In this embodiment, the gear shift rocker arm 111 and the gear shift flexible shaft assembly 13 are connected by bolts, and the gear selection rocker arm 112 and the gear selection flexible shaft assembly 14 are connected by bolts. The gear shift rocker arm 111 and the gear selection rocker arm 112 are each provided with three connecting holes to facilitate adjustment of the gear selection flexible shaft assembly 14 or the gear shift flexible shaft assembly 13 during connection.

[0030] In this utility model, the shifting flexible shaft assembly 13 of the mining gear shifting mechanism is connected between the shifting rocker arm 111 and the fixed base 12. The plane of the push-pull stroke of the shifting flexible shaft assembly 13 is parallel or coincident with the plane of the shifting rocker arm 111 during rotation. The selection flexible shaft assembly 14 is connected between the selection rocker arm 112 and the fixed base 12, and the plane of the push-pull stroke of the selection flexible shaft assembly 14 is parallel or coincident with the plane of the selection rocker arm 112 during rotation. This ensures that the direct force load on the flexible shaft assembly is small, while also making the flexible shaft routing smooth and having a large bending radius. The friction between the flexible shaft axis and the interlocking parts is reduced, resulting in higher stroke efficiency and load efficiency. This ensures that the torque of the gear selection flexible shaft assembly 14 and the gear shift flexible shaft assembly 13 is maximized during the push-pull process, improving gear shifting efficiency. At the same time, it reduces the load on the ball joint at the end of the gear shift flexible shaft assembly 13 and the ball joint at the end of the gear selection flexible shaft assembly 14. This not only enables the driver to operate accurately, easily, quickly, and with a good feel, but also ensures that the strength of the selected flexible shaft meets the actual use requirements, improving the fatigue life of the mining gear shift mechanism assembly.

[0031] like Figure 6As shown, the fixed base 12 is an integrated fixed bracket. The fixed base 12 includes a vertical plate 121, a first connecting plate 122, and a second connecting plate 123. The first connecting plate 122 and the second connecting plate 123 are arranged opposite to each other. The vertical plate 121 is vertically connected to the first connecting plate 122 and the second connecting plate 123. The shift flexible shaft assembly 13 is connected to the vertical plate 121, and the gear selection flexible shaft assembly 14 is connected to the first connecting plate 122. The second connecting plate 123 is fixedly connected to the gearbox 11. The second connecting plate 123 is connected to the gearbox 11 by at least four first fasteners 17, which are preferably bolts. The mounting base 12 also includes a reinforcing member 124, which is fixedly connected between the first connecting plate 122 and the second connecting plate 123. In this embodiment, the reinforcing member 124 is, for example, a reinforcing block or a reinforcing plate. When the reinforcing member 124 is a reinforcing block, it is fixedly connected between the first connecting plate 122 and the second connecting plate 123. When the reinforcing member 124 is a reinforcing plate, it includes a first reinforcing plate and a second reinforcing plate. The first and second reinforcing plates are vertically arranged, spaced apart and opposite to each other, and fixedly connected between the first connecting plate 122 and the second connecting plate 123. It can be understood that the reinforcing member 124 and the mounting base 12 are integrally formed or connected by welding. The upright plate 121, the first connecting plate 122, and the second connecting plate 123 are all L-shaped to avoid structural interference during installation, while also reducing costs and weight. The vertical plate 121 includes a first part 1211 and a second part 1212 that are fixedly connected. The first part 1211 and the second part 1212 are arranged perpendicularly to each other, and the connection between the first part 1211 and the second part 1212 is an arc-shaped connection. A first connecting plate 122, a reinforcing member 124, and a second connecting plate 123 are respectively fixedly connected to the first part 1211. The gear selector flexible shaft assembly 14 is fixedly connected to the second part 1212. The second connecting plate 123 includes a third part 1231 and a fourth part 1232 that are fixedly connected. The third part 1231 and the fourth part 1232 are arranged perpendicularly to each other, and the connection between the third part 1231 and the fourth part 1232 is an arc-shaped connection. The reinforcing member 124 is fixedly connected to the third part 1231, and the fourth part 1232 is fixedly connected to the gearbox 11.

[0032] like Figures 1 to 3As shown, the gear shift flexible shaft assembly 13 is connected to the upright plate 121 via a first fixing member 15. The first fixing member 15 includes a first fixing part 151 and a first connecting part 152 that are fixedly connected. The first fixing part 151 is connected to the gear shift flexible shaft assembly 13, and the first connecting part 152 is connected to the upright plate 121. The gear selection flexible shaft assembly 14 is connected to the first connecting plate 122 via a second fixing member 16. The second fixing member 16 includes a second fixing part 161 and a second connecting part 162 that are fixedly connected. The second fixing part 161 is connected to the gear selection flexible shaft assembly 14, and the second connecting part 162 is connected to the first connecting plate 122. In this embodiment, the first fixing member 15 is disposed through the second part 1212. The first fixing member 15 is preferably a U-bolt and is fastened with two nuts. The second fixing member 16 is disposed through the first connecting plate 122 near one end of the gear selection rocker arm 112. The second fixing member 16 is preferably a U-bolt and is fastened with two nuts.

[0033] Preferably, the first fixing part 151 includes a first mounting part 1511 and a second mounting part 1512. The first mounting part 1511 is U-shaped and has a first groove. The second mounting part 1512 has a second groove. When the first mounting part 1511 and the second mounting part 1512 are engaged, the first groove and the second groove form a first through hole. One end of the shift flexible shaft assembly 13 passes through the first through hole. The second fixing part 161 includes a third mounting part 1611 and a fourth mounting part 1612. The third mounting part 1611 is U-shaped and has a third groove. The fourth mounting part 1612 has a fourth groove. The third mounting part 1611 and the fourth mounting part 1612 are engaged so that the third groove and the fourth groove form a second through hole. One end of the shift flexible shaft assembly 14 passes through the second through hole. In this embodiment, the second assembly 1512 and the third assembly 1611 are reinforcing ribs, so that the first assembly 1511 and the second assembly 1512, and the third assembly 1611 and the fourth assembly 1612 respectively form a box-shaped structure to ensure structural strength.

[0034] Preferably, when the gearbox 11 is in neutral, the shift rocker arm 111 is vertically positioned and the shift flexible shaft assembly 13 is horizontally positioned to ensure that the rod end of the shift flexible shaft assembly 13 remains perpendicular to the shift rocker arm 111. This facilitates assembly and maintenance for workers, because if the shift rocker arm 111 is facing downwards in neutral, assembly and maintenance would be very difficult due to the limited space between the gearbox 11 and the frame. On the other hand, it reduces the vertical distance between the end of the cab control lever and the fixing point of the shift rocker arm 111 of the gearbox 11. Typically, the end of the cab control lever is higher than the fixing point of the shift rocker arm 111. Therefore, the design of the above structure allows for smoother routing of the flexible shaft, i.e., a larger bending radius, thereby giving the flexible shaft higher forming efficiency and load efficiency. Meanwhile, when the gearbox 11 is in neutral, the rod end of the gear selector flexible shaft assembly 14 is horizontally positioned, and the line connecting the rotation center point of the gear selector rocker arm 112 and the center of the fixing hole is perpendicular to the rod end of the gear selector flexible shaft assembly 14. The rotation center of the gear selector rocker arm 112 refers to the connection point between the gear selector rocker arm 112 and the gearbox 11, and the fixing hole refers to the connection point between the gear selector rocker arm 112 and the gear selector flexible shaft assembly 14.

[0035] Preferably, the plane containing the four first fasteners 17 is defined as the fixed plane (e.g., Figure 1 As shown), the maximum vertical distance between the path point of the plane in which the gear selector rocker arm 112 rotates and the fixed surface is defined as the first distance. The length of the first fixed part 151 is less than the first distance. The maximum vertical distance between the path point of the plane in which the gear shift rocker arm 111 rotates and the fixed surface is defined as the second distance. The length of the second fixed part 161 is less than the second distance. This ensures that the lengths of the first fixed part 151 and the second fixed part 161 of the gear selector flexible shaft assembly 14 and the gear shift flexible shaft assembly 13 are minimized. This not only reduces costs but also enhances the working strength of the mining gear selector flexible shaft assembly. If the lengths of the first fixed part 151 and the second fixed part 161 are defined as cantilever lengths, the cantilever length is minimized while ensuring effective installation, thus reducing costs. The first fastener 17 is preferably a bolt.

[0036] This utility model also relates to a mining vehicle, including the above-mentioned mining gear shifting mechanism assembly.

[0037] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A mining gear shifting mechanism assembly, characterized in that, The system includes a gearbox (11), a mounting base (12), a shift cable assembly (13), and a selector cable assembly (14). The mounting base (12) is fixedly connected to the gearbox (11). The gearbox (11) includes a shift rocker arm (111) and a selector rocker arm (112). One end of the shift cable assembly (13) is connected to the mounting base (12), and the other end of the shift cable assembly (13) is connected to the shift rocker arm (111). The plane in which the push-pull stroke of the shift flexible shaft assembly (13) is located is parallel or coincident with the plane in which the shift rocker arm (111) rotates. One end of the shift flexible shaft assembly (14) is connected to the fixed seat (12), and the other end of the shift flexible shaft assembly (14) is connected to the shift rocker arm (112). The plane in which the push-pull stroke of the shift flexible shaft assembly (14) is located is parallel or coincident with the plane in which the shift rocker arm (112) rotates.

2. The mining gear shifting mechanism assembly as described in claim 1, characterized in that, When the gearbox (11) is in neutral, the shift rocker arm (111) is vertically positioned and the shift flexible shaft assembly (13) is horizontally positioned.

3. The mining gear shifting mechanism assembly as described in claim 2, characterized in that, The gear selection flexible shaft assembly (14) is set horizontally, and the line connecting the rotation center point of the gear selection rocker arm (112) and the center of the fixed hole is perpendicular to the rod end of the gear selection flexible shaft assembly (14).

4. The mining gear shifting mechanism assembly as described in claim 1, characterized in that, The fixed base (12) includes a vertical plate (121), a first connecting plate (122), and a second connecting plate (123). The first connecting plate (122) and the second connecting plate (123) are arranged opposite to each other. The vertical plate (121) is vertically connected to the first connecting plate (122) and the second connecting plate (123). The shift flexible shaft assembly (13) is connected to the vertical plate (121). The gear selection flexible shaft assembly (14) is connected to the first connecting plate (122). The second connecting plate (123) is fixedly connected to the gearbox (11).

5. The mining gear shifting mechanism assembly as described in claim 4, characterized in that, The mounting base (12) also includes a reinforcing member (124), which is fixedly connected between the first connecting plate (122) and the second connecting plate (123).

6. The mining gear shifting mechanism assembly as described in claim 4, characterized in that, The shift flexible shaft assembly (13) is connected to the upright plate (121) via a first fixing member (15). The first fixing member (15) includes a first fixing part (151) and a first connecting part (152) that are fixedly connected. The first fixing part (151) is connected to the shift flexible shaft assembly (13), and the first connecting part (152) is connected to the upright plate (121). The gear selection flexible shaft assembly (14) is connected to the first connecting plate (122) via a second fixing member (16). The second fixing member (16) includes a second fixing part (161) and a second connecting part (162) that are fixedly connected. The second fixing part (161) is connected to the gear selection flexible shaft assembly (14), and the second connecting part (162) is connected to the first connecting plate (122).

7. The mining gear shifting mechanism assembly as described in claim 6, characterized in that, The second connecting plate (123) is connected to the gearbox (11) by at least four first fasteners (17). The plane where the four first fasteners (17) are located is defined as the fixed plane. The maximum vertical distance between the path point of the plane where the shift rocker arm (112) rotates and the fixed plane is defined as the first distance. The length of the first fixed part (151) is less than the first distance. The maximum vertical distance between the path point of the plane where the shift rocker arm (111) rotates and the fixed plane is defined as the second distance. The length of the second fixed part (161) is less than the second distance.

8. The mining gear shifting mechanism assembly as described in claim 6, characterized in that, The first fixing part (151) includes a first mounting part (1511) and a second mounting part (1512). The first mounting part (1511) is provided with a first groove, and the second mounting part (1512) is provided with a second groove. When the first mounting part (1511) and the second mounting part (1512) are engaged, the first groove and the second groove form a first through hole. One end of the shift flexible shaft assembly (13) is disposed through the first through hole. The second fixing part (161) includes a third mounting part (1611) and a fourth mounting part (1612). The third mounting part (1611) is provided with a third groove, and the fourth mounting part (1612) is provided with a fourth groove. The third mounting part (1611) and the fourth mounting part (1612) cooperate to form a second through hole with the third groove and the fourth groove. One end of the selector flexible shaft assembly (14) is disposed through the second through hole.

9. The mining gear shifting mechanism assembly as described in claim 8, characterized in that, The first assembly (1511) is U-shaped, and the third assembly (1611) is U-shaped.

10. A mining vehicle, characterized in that, Includes the mining gear shifting mechanism assembly as described in any one of claims 1 to 9.

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