Fracturing pump and fracturing vehicle having the same

Abstract

The present invention discloses a fracturing pump and a fracturing vehicle having the same, wherein the fracturing pump comprises a first-stage transmission assembly and a second-stage transmission assembly, wherein the first-stage transmission assembly comprises a first transmission member and a second transmission member, wherein the first transmission member is meshed with the second transmission member, wherein the rotation direction of the first transmission member is orthogonal to the rotation direction of the second transmission member, and the second-stage transmission assembly comprises a connected herringbone gear component and a crankshaft, wherein the herringbone gear component is meshed with the second transmission member. The fracturing pump of the present invention has a reasonable structural design and is convenient for longitudinal installation on a fracturing vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of pump bodies, and in particular to a fracturing pump and a fracturing vehicle having the same. Background Art

[0002] Fracturing refers to a method of using hydraulic force to create cracks in oil and gas layers during oil or gas production, also known as hydraulic fracturing. Fracturing is to artificially create cracks in the formation to improve the flow environment of oil underground and increase the production of oil wells. It plays an important role in improving the flow conditions at the bottom of the oil well, slowing down the interlayer and improving the utilization of the oil layer. Fracturing uses a fracturing truck, which is a special vehicle used to inject high-pressure, large-volume fracturing fluid into the well to press the formation open and squeeze the proppant into the cracks.

[0003] In the related art, conventional fracturing pumps can only be installed horizontally on fracturing trucks, and the stroke size and structure of the fracturing pumps are restricted by the width of the chassis of the fracturing trucks. Therefore, the transmission device design of the fracturing pumps in the related art is not reasonable, resulting in limited appearance structure and stroke design of the fracturing pumps, narrow application range, and low service life. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a fracturing pump with a reasonable structural design and convenient for longitudinal installation on a fracturing vehicle.

[0006] The embodiment of the present invention further provides a fracturing truck.

[0007] According to an embodiment of the present invention, a fracturing pump includes a first-stage transmission assembly and a second-stage transmission assembly, the first-stage transmission assembly includes a first transmission member and a second transmission member, the first transmission member is meshed with the second transmission member, the rotation direction of the first transmission member is orthogonal to the rotation direction of the second transmission member, the second-stage transmission assembly includes a connected herringbone gear component and a crankshaft, the herringbone gear component is meshed with the second transmission member.

[0008] According to the fracturing pump of the embodiment of the present invention, when the fracturing pump is installed on the fracturing vehicle, the rotation direction of the first transmission member is orthogonal to the rotation direction of the second transmission member, so that the axial direction of the fracturing pump input shaft is parallel to the length direction of the fracturing vehicle, thereby facilitating the longitudinal installation of the fracturing pump on the fracturing vehicle, and the fracturing pump of the embodiment of the present invention adopts a two-stage transmission to increase the stroke of the fracturing pump, reduce the number of strokes of the fracturing pump, and prolong the service life of the fracturing pump. In addition, since the first-stage transmission component and the second-stage transmission component are meshed and driven through the structure of the herringbone gear, the transmission of the fracturing pump can be made more stable, making the structure of the fracturing pump more reasonable.

[0009] In some embodiments, the first transmission member includes a first transmission shaft and a first bevel gear coaxially connected, the second transmission member includes a second transmission shaft and a second bevel gear coaxially connected, the fracturing pump also includes a casing, the first transmission shaft and the second transmission shaft are both pivotally connected to the casing, and the first bevel gear is meshed with the second bevel gear.

[0010] In some embodiments, the second transmission member further includes a herringbone gear segment, the herringbone gear segment is meshed with the herringbone gear component, the herringbone gear segment is integrally formed with the second transmission shaft, and the second bevel gear is detachably connected to the second transmission shaft.

[0011] In some embodiments, a first cylindrical roller bearing is installed between one end of the second transmission shaft and the housing, and a first tapered roller bearing is installed between the other end of the second transmission shaft and the housing.

[0012] In some embodiments, the herringbone gear component includes a wheel hub, a left-handed herringbone gear and a right-handed herringbone gear. The left-handed herringbone gear and the right-handed herringbone gear are sleeved on the wheel hub, and the wheel hub is sleeved on the crankshaft. The left-handed herringbone gear and the right-handed herringbone gear are both meshed with the herringbone gear segment.

[0013] In some embodiments, the herringbone gear component further comprises a spline sleeve, the outer circumferential wall of the spline sleeve has external splines, the inner circumferential wall of the spline sleeve has internal splines, the outer circumferential wall of the spline sleeve cooperates with the inner circumferential wall of the wheel hub, and the inner circumferential wall of the spline sleeve cooperates with the crankshaft.

[0014] In some embodiments, second cylindrical roller bearings are respectively installed at two ends of the hub along the axial direction, and an axial floating clearance is provided in the second cylindrical roller bearing.

[0015] In some embodiments, the guide assembly also includes a guide box, a cross-head connecting rod component and a pull rod. The cross-head connecting rod component is connected to the crankshaft and is arranged in the guide box. The cross-head connecting rod component is connected to the pull rod to push the pull rod to reciprocate.

[0016] According to another embodiment of the present invention, a fracturing vehicle comprises: a vehicle body, a power unit and a fracturing pump, wherein the power unit is arranged on the vehicle body, the fracturing pump is any one of the fracturing pumps in the embodiments of the present invention, and the first transmission member is connected to the power unit, and the axial direction of the first transmission member is consistent with the length direction of the vehicle body.

[0017] According to the fracturing vehicle of the embodiment of the present invention, when the fracturing pump is installed on the fracturing vehicle, the rotation direction of the first transmission member is orthogonal to the rotation direction of the second transmission member, so that the axial direction of the fracturing pump input shaft is parallel to the length direction of the fracturing vehicle, thereby facilitating the longitudinal installation of the fracturing pump on the fracturing vehicle, and the fracturing pump of the embodiment of the present invention adopts a two-stage transmission to increase the stroke of the fracturing pump, reduce the number of strokes of the fracturing pump, and prolong the service life of the fracturing pump. In addition, since the first-stage transmission component and the second-stage transmission component are meshed and driven through the structure of the herringbone gear, the transmission of the fracturing pump can be made more stable, making the structure of the fracturing pump more reasonable.

[0018] In some embodiments, the power device includes an engine, a torque converter and a transmission, the engine is connected to the torque converter and the transmission, and the axis of the output shaft of the transmission is parallel to the axial direction of the first transmission member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of a fracturing truck according to an embodiment of the present invention.

[0020] Figure 2 is a schematic diagram of a fracturing pump according to an embodiment of the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of a fracturing pump according to an embodiment of the present invention.

[0022] Figure 4 is a cross-sectional view of a fracturing pump according to an embodiment of the present invention.

[0023] Figure 5 is an exploded view of a fracturing pump according to an embodiment of the present invention.

[0024] Figure 6 FIG. 4 is an exploded view of a fracturing pump according to another embodiment of the present invention.

[0025] Figure 7 Schematic diagram of a first transmission member of a fracturing pump according to an embodiment of the present invention.

[0026] Figure 8 Schematic diagram of a herringbone gear component of a fracturing pump according to an embodiment of the present invention.

[0027] Fig. 9 1 is an exploded view of a herringbone gear component of a fracturing pump according to an embodiment of the present invention.

[0028] Fig.10 Schematic diagram of a spline sleeve of a fracturing pump according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] 10. Fracturing pump;

[0031] 11. Box body;

[0032] 12. first stage transmission assembly; 121. first transmission member; 1211. first transmission shaft; 1212. first bevel gear; 122. second transmission member; 1221. second transmission shaft; 1222. second bevel gear; 1223. herringbone gear segment; 1224. first cylindrical roller bearing; 1225. first tapered roller bearing;

[0033] 13. Second stage transmission assembly; 131. Herringbone gear component; 1311. Wheel hub; 1312. Herringbone left-handed gear; 1313. Herringbone right-handed gear; 1314. Spline sleeve; 1315. Second cylindrical roller bearing; 1316. Screw; 1317. Nut; 1318. Anti-loosening washer; 132. Crankshaft; 1321. First crankshaft; 1322. Second crankshaft; 133. Guide assembly; 1331. Guide box; 13311. First guide box; 13312. Second guide box; 1332. Crosshead connecting rod component; 1333. Pull rod;

[0034] 20. Vehicle body;

[0035] 30. Power plant;

[0036] 31. Engine; 32. Torque converter; 33. Transmission. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0038] Please refer to the following Figures 1 to 10 A fracturing pump 10 and a fracturing vehicle having the same according to an embodiment of the present invention are described.

[0039] like Figures 2 to 6 As shown, the fracturing pump 10 of the embodiment of the present invention includes: a first-stage transmission assembly 12 and a second-stage transmission assembly 13, the first-stage transmission assembly 12 includes a first transmission member 121 and a second transmission member 122, the first transmission member 121 is meshed with the second transmission member 122, the rotation direction of the first transmission member 121 is orthogonal to the rotation direction of the second transmission member 122, the second-stage transmission assembly 13 includes a connected herringbone gear component 131 and a crankshaft 132, the herringbone gear component 131 is meshed with the second transmission member 122. It can be understood that when the fracturing pump 10 is working, the first transmission member 121 can drive the second transmission member 122 to rotate, so that the herringbone gear component 131 drives the crankshaft 132 to rotate.

[0040] According to the fracturing pump 10 of the embodiment of the present invention, when the fracturing pump 10 is installed on the fracturing vehicle, the rotation direction of the first transmission member 121 is orthogonal to the rotation direction of the second transmission member 122, so that the axial direction of the input shaft of the fracturing pump 10 is parallel to the length direction of the fracturing vehicle, thereby facilitating the longitudinal installation of the fracturing pump 10 on the fracturing vehicle, and the fracturing pump 10 of the embodiment of the present invention adopts a two-stage transmission to increase the stroke of the fracturing pump 10, reduce the number of strokes of the fracturing pump 10, and make the service life of the fracturing pump 10 longer. In addition, since the first-stage transmission component 12 and the second-stage transmission component 13 are meshed and driven through the structure of the herringbone gear, the transmission of the fracturing pump 10 can be made more stable, and the structure of the fracturing pump 10 is made more reasonable.

[0041] Specifically, the fracturing pump 10 further includes a casing 11 , and at least a portion of the first-stage transmission assembly 12 and the second-stage transmission assembly 13 are disposed in the casing 11 .

[0042] In some embodiments, Figures 2 to 7 As shown, the first transmission member 121 includes a first transmission shaft 1211 and a first bevel gear 1212 connected coaxially, and the second transmission member 122 includes a second transmission shaft 1221 and a second bevel gear 1222 connected coaxially, and the first transmission shaft 1211 and the second transmission shaft 1221 are both pivotally connected to the housing 11, and the first bevel gear 1212 is meshed with the second bevel gear 1222. It can be understood that the first transmission member 121 and the second transmission member 122 are transmitted by bevel gear transmission, so that the transmission direction of the first transmission member 121 can be orthogonal to the transmission direction of the second transmission member 122, and the stability of the transmission between the first transmission member 121 and the second transmission member 122 is improved.

[0043] Alternatively, if Figure 7 As shown, the second transmission member 122 also includes a herringbone gear segment 1223, which is meshed with the herringbone gear component 131, and the herringbone gear segment 1223 and the second transmission shaft 1221 are integrally formed, and the second bevel gear 1222 is detachably connected to the second transmission shaft 1221, thereby facilitating the assembly and processing of the fracturing pump 10 and having a low manufacturing cost.

[0044] Alternatively, if Figure 4 As shown, a first cylindrical roller bearing 1224 is installed between one end of the second transmission shaft 1221 and the housing 11, and a first tapered roller bearing 1225 is installed between the other end of the second transmission shaft 1221 and the housing 11. It can be understood that the first cylindrical roller bearing 1224 can be a NU-type cylindrical roller bearing, and the first tapered roller bearing 1225 is a tapered bearing installed face to face, thereby improving the stability of the second transmission shaft 1221 when rotating.

[0045] In some embodiments, Figures 4 to 9As shown, the herringbone gear component 131 includes a hub 1311, a herringbone left-handed gear 1312 and a herringbone right-handed gear 1313. The herringbone left-handed gear 1312 and the herringbone right-handed gear 1313 are sleeved on the hub 1311, and the hub 1311 is sleeved on the crankshaft 132. The herringbone left-handed gear 1312 and the herringbone right-handed gear 1313 are both engaged with the herringbone gear segment 1223. It can be understood that the herringbone left-handed gear 1312 and the herringbone right-handed gear 1313 are detachably connected to the hub 1311. For example, the herringbone gear component 131 also includes a screw 1316, a nut 1317 and an anti-loosening gasket 1318. The screw rod 1316 passes through the left-handed herringbone gear 1312, the wheel hub 1311 and the right-handed herringbone gear 1313 in sequence, and is connected through a nut 1317. An anti-loosening gasket 1318 is provided on the screw rod 1316 to improve the reliability of the herringbone gear component 131 after assembly.

[0046] Alternatively, if Figure 4 and Fig.10 As shown, the herringbone gear component 131 also includes a spline sleeve 1314, the outer peripheral wall of the spline sleeve 1314 has an outer spline, the inner peripheral wall of the spline sleeve 1314 has an inner spline, the outer peripheral wall of the spline sleeve 1314 matches with the inner peripheral wall of the hub 1311, and the inner peripheral wall of the spline sleeve 1314 matches with the crankshaft 132. It can be understood that the inner ring of the hub 1311 matches with the outer ring of the spline sleeve 1314, and the inner ring of the spline sleeve 1314 matches with the outer peripheral surface of the crankshaft 132, so that when the herringbone gear component 131 rotates, the crankshaft 132 can be driven to rotate through the spline sleeve 1314, thereby making the transmission stability of the fracturing pump 10 better, and easy to manufacture and process, and low in cost.

[0047] Specifically, Figure 4 As shown, the crankshaft 132 includes a first crankshaft 1321 and a second crankshaft 1322, and the first crankshaft 1321 and the second crankshaft 1322 are respectively arranged on both sides of the spline sleeve 1314 in the axial direction. It can be understood that a part of the spline sleeve 1314 cooperates with the outer circumferential surface of the first crankshaft 1321, and the other part of the spline sleeve 1314 cooperates with the outer circumferential surface of the second crankshaft 1322, so as to facilitate the use of the crankshaft 132.

[0048] Furthermore, if Figure 4 As shown, the hub 1311 is respectively provided with second cylindrical roller bearings 1315 at both ends along the axial direction thereof, and an axial floating clearance is provided in the second cylindrical roller bearings 1315. For example, the second cylindrical roller bearings 1315 may be NJ-type cylindrical roller bearings, and since the NJ-type bearings used in pairs have a certain floating clearance in the axial direction, the herringbone gear component 131 can be "automatically centered" under the action of the second transmission shaft 1221, thereby enabling the herringbone gear component 131 and the herringbone gear segment 1223 to find the best meshing position.

[0049] In some embodiments, Figure 5 and Figure 6 As shown, the fracturing pump 10 further includes a guide assembly 133, which includes a guide box 1331, a cross-head connecting rod component 1332 and a pull rod 1333. The cross-head connecting rod component 1332 is connected to the crankshaft 132 and is disposed in the guide box 1331. The cross-head connecting rod component 1332 is connected to the pull rod 1333 to push the pull rod 1333 to reciprocate. Specifically, the guide box 1331 includes a first guide box 13311 and a second guide box 13312, wherein a portion of the cross-head connecting rod component 1332 is disposed in the first guide box 13311 and is connected to the first crankshaft 1321, and another portion of the cross-head connecting rod component 1332 is disposed in the second guide box 13312 and is connected to the second crankshaft 1322.

[0050] Alternatively, if Figure 5 and Figure 6 As shown, the first guide box 13311 and the second guide box 13312 can be designed according to actual needs. For example, the first guide box 13311 and the second guide box 13312 can be designed as 2 cylinders, 3 cylinders or 4 cylinders, and the first guide box 13311 and the second guide box 13312 with different numbers of cylinders can be combined according to actual design needs to meet different application scenarios of the fracturing pump 10, thereby increasing the scope of use of the fracturing pump 10 and reducing design and production costs.

[0051] like Figures 1 to 6 As shown, a fracturing vehicle according to another embodiment of the present invention includes: a vehicle body 20, a power unit 30 and a fracturing pump 10, the power unit 30 is arranged on the vehicle body 20, the fracturing pump 10 is the fracturing pump 10 of the embodiment of the present invention, the first transmission member 121 is connected to the power unit 30, and the axial direction of the first transmission member 121 is consistent with the length direction of the vehicle body 20.

[0052] According to the fracturing truck of the embodiment of the present invention, when the fracturing pump 10 is installed on the fracturing truck, the rotation direction of the first transmission member 121 is orthogonal to the rotation direction of the second transmission member 122, so that the axial direction of the input shaft of the fracturing pump 10 is parallel to the length direction of the fracturing truck, thereby facilitating the longitudinal installation of the fracturing pump 10 on the fracturing truck. In addition, the fracturing pump 10 of the embodiment of the present invention adopts a two-stage transmission to increase the stroke of the fracturing pump 10 and reduce the stroke frequency of the fracturing pump 10, so that the service life of the fracturing pump 10 is longer.

[0053] In addition, since the first-stage transmission assembly 12 and the second-stage transmission assembly 13 are meshed and driven through the structure of the herringbone gear, the fracturing pump 10 can be driven more smoothly, making the structure of the fracturing pump 10 more reasonable. In addition, the fracturing pump 10 in the present invention is longitudinally installed on the fracturing vehicle, and the axis of its crankshaft 132 is perpendicular to the axis of the high-power diesel engine 31 on the vehicle, so that the vibration of the fracturing vehicle can be effectively reduced, so that the use effect of the fracturing vehicle is better.

[0054] The primary transmission of the fracturing pump 10 in the present invention is a bevel gear transmission. The purpose of such a design is to change the spatial direction of the input shaft (first transmission shaft 1211) and the output shaft, so that the herringbone gear component 131 is perpendicular to the first transmission shaft 1211, so that the fracturing pump 10 can be installed longitudinally on the fracturing vehicle. Since the fracturing pump 10 is installed longitudinally on the fracturing vehicle, its stroke design is no longer limited by the width limit of the chassis of the fracturing vehicle, so the stroke of the fracturing pump 10 can be designed to be larger, and the stroke of the fracturing pump 10 in the present invention can far exceed 11 inches. Under the same power, the stroke of the fracturing pump 10 can be designed to be lower, thereby extending the service life of the wearing parts of the fracturing pump 10. In addition, the present invention adopts a two-stage gear reduction design, so that the diameter of the herringbone gear is smaller, which can effectively reduce the width and height of the fracturing pump 10, making the fracturing pump 10 shorter in length and more compact in structure.

[0055] Specifically, Figure 1 As shown, the power device 30 includes an engine 31, a torque converter 32 and a transmission 33. The engine 31 is connected to the torque converter 32 and the transmission 33. The axis of the output shaft of the transmission 33 is parallel to the axial direction of the first transmission member 121. It can be understood that the engine 31, the torque converter 32, the transmission 33 and the fracturing pump 10 are arranged in sequence along the length direction of the vehicle body 20, so that the structure of the fracturing vehicle can be more reasonable and the vibration problem of the whole vehicle of the fracturing vehicle can be reduced.

[0056] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0060] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0061] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A fracturing pump, characterized in that: The invention comprises a first-stage transmission assembly and a second-stage transmission assembly, wherein the first-stage transmission assembly comprises a first transmission member and a second transmission member, wherein the first transmission member is meshed with the second transmission member, and the rotation direction of the first transmission member is orthogonal to the rotation direction of the second transmission member, and the second-stage transmission assembly comprises a connected herringbone gear component and a crankshaft, wherein the herringbone gear component is meshed with the second transmission member; The first transmission member includes a first transmission shaft and a first bevel gear coaxially connected, the second transmission member includes a second transmission shaft and a second bevel gear coaxially connected, the fracturing pump also includes a casing, the first transmission shaft and the second transmission shaft are both pivotally connected to the casing, and the first bevel gear is meshed with the second bevel gear; The second transmission member further comprises a herringbone gear segment, the herringbone gear segment is meshed with the herringbone gear component, the herringbone gear segment is integrally formed with the second transmission shaft, and the second bevel gear is detachably connected to the second transmission shaft; The herringbone gear component comprises a wheel hub, a herringbone left-handed gear and a herringbone right-handed gear, the herringbone left-handed gear and the herringbone right-handed gear are sleeved on the wheel hub, the wheel hub is sleeved on the crankshaft, and the herringbone left-handed gear and the herringbone right-handed gear are both meshed with the herringbone gear segment; A first cylindrical roller bearing is installed between one end of the second transmission shaft and the housing, and a first tapered roller bearing is installed between the other end of the second transmission shaft and the housing; It also includes a guide assembly, which includes a guide box, a cross-head connecting rod component and a pull rod. The cross-head connecting rod component is connected to the crankshaft and is arranged in the guide box. The cross-head connecting rod component is connected to the pull rod to push the pull rod to reciprocate.

2. The fracturing pump according to claim 1, characterized in that: The herringbone gear component also includes a spline sleeve, the outer peripheral wall of the spline sleeve has external splines, the inner peripheral wall of the spline sleeve has internal splines, the outer peripheral wall of the spline sleeve cooperates with the inner peripheral wall of the wheel hub, and the inner peripheral wall of the spline sleeve cooperates with the crankshaft.

3. The fracturing pump according to claim 1, characterized in that: The wheel hub is respectively provided with second cylindrical roller bearings at two ends along the axial direction thereof, and an axial floating clearance is arranged in the second cylindrical roller bearing.

4. A fracturing truck, characterized in that: include: Vehicle body; A power device, wherein the power device is arranged on the vehicle body; A fracturing pump, wherein the fracturing pump is the fracturing pump according to any one of claims 1 to 3, wherein the first transmission member is connected to the power device, and the axial direction of the first transmission member is consistent with the length direction of the vehicle body.

5. The fracturing truck according to claim 4, characterized in that: The power device includes an engine, a torque converter and a transmission. The engine is connected to the torque converter and the transmission. The axis of the output shaft of the transmission is parallel to the axial direction of the first transmission member.

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