Fracturing Pumps and Fracturing Trucks

Abstract

The present invention discloses a fracturing pump and a fracturing vehicle, 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 meshes 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 wherein the second-stage transmission assembly comprises a reduction gear component, a first crankshaft and a second crankshaft, wherein the first crankshaft and the second crankshaft are respectively arranged on both sides of the reduction gear component in the axial direction, wherein the reduction gear component meshes 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 invention relates to the technical field of pump bodies, and in particular to a fracturing pump and a fracturing vehicle. 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 also 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 reduction gear component, a first crankshaft and a second crankshaft, the first crankshaft and the second crankshaft are respectively arranged on both sides of the reduction gear component in the axial direction, and the reduction 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 reduction, which can make the transmission of the fracturing pump more stable, the structure of the fracturing pump is more reasonable, and the stroke of the fracturing pump can be increased, the number of strokes of the fracturing pump can be reduced, and the service life of the fracturing pump can be longer. In addition, since the first crankshaft and the second crankshaft are respectively arranged on both sides of the axial direction of the reduction gear component, the first crankshaft and the second crankshaft can correspond to different numbers of cylinders, which can improve the use effect of the fracturing pump and have better stability during transmission.

[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 section, the reduction gear component includes a herringbone reduction gear, the herringbone gear section is meshed with the herringbone reduction gear, the herringbone gear section 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, the herringbone reduction gear includes a 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 hub, and the hub is sleeved on the first crankshaft and the second crankshaft. The left-handed herringbone gear and the right-handed herringbone gear are both meshed with the herringbone gear segment.

[0012] In some embodiments, the reduction gear component also includes a spline sleeve, the outer circumferential wall of the spline sleeve has an external spline, the inner circumferential wall of the spline sleeve has an internal spline, the outer circumferential wall of the spline sleeve cooperates with the inner circumferential wall of the wheel hub, a part of the inner circumferential wall of the spline sleeve cooperates with the first crankshaft, and another part of the inner circumferential wall of the spline sleeve cooperates with the second crankshaft.

[0013] 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.

[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 fracturing pump also includes a guide assembly, which includes a first guide box, a second guide box, a crosshead connecting rod component and a pull rod. There are multiple crosshead connecting rod components, wherein a portion of the crosshead connecting rod components are connected to the first crankshaft and are disposed in the first guide box, and another portion of the crosshead connecting rod components are connected to the second crankshaft and are disposed in the second guide box. The crosshead connecting rod components are connected to the pull rod to push the pull rod to reciprocate.

[0016] A fracturing vehicle according to another embodiment of the present invention includes: a vehicle body; a power device, which is arranged on the vehicle body; a fracturing pump, which is the fracturing pump described in any one of the above embodiments, and 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.

[0017] According to a fracturing truck of another embodiment of the present invention, when the fracturing pump is installed on the fracturing truck, 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 truck, thereby facilitating the longitudinal installation of the fracturing pump on the fracturing truck. In addition, the fracturing pump of the embodiment of the present invention adopts a two-stage transmission reduction, which can make the transmission of the fracturing pump more stable, the structure of the fracturing pump more reasonable, and the stroke of the fracturing pump can be increased and the stroke frequency of the fracturing pump can be reduced, so that the service life of the fracturing pump is longer, and the problem of vehicle vibration of the fracturing truck can be reduced.

[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 reduction gear component of a fracturing pump according to an embodiment of the present invention.

[0027] Fig. 9 1 is an exploded view of a reduction 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. Reduction gear component; 1311. Herringbone reduction gear; 13111. Wheel hub; 13112. Herringbone left-handed gear; 13113. Herringbone right-handed gear; 13114. Screw; 13115. Nut; 13116. Anti-loosening washer; 1312. Spline sleeve; 1313. Second cylindrical roller bearing; 132. First crankshaft; 133. Second crankshaft; 134. Guide assembly; 1341. First guide box; 1342. Second guide box; 1343. Crosshead connecting rod component; 1344. 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 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 reduction gear component 131, a first crankshaft 132 and a second crankshaft 133, the first crankshaft 132 and the second crankshaft 133 are respectively arranged on both sides of the reduction gear component 131 in the axial direction, and the reduction 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 reduction gear component 131 drives the first crankshaft 132 and the second crankshaft 133 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 reduction, which can make the transmission of the fracturing pump 10 more stable, the structure of the fracturing pump 10 more reasonable, and the stroke of the fracturing pump 10 can be increased, the number of strokes of the fracturing pump 10 can be reduced, and the service life of the fracturing pump 10 is longer. In addition, since the first crankshaft 132 and the second crankshaft 133 are respectively arranged on both sides of the axial direction of the reduction gear component 131, the first crankshaft 132 and the second crankshaft 133 can correspond to different numbers of cylinders, which can improve the use effect of the fracturing pump 10 and have better stability during transmission.

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

[0042] Alternatively, if Figures 4 to 6 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] In some embodiments, Figure 7 As shown, the second transmission member 122 also includes a herringbone gear segment 1223, the reduction gear component 131 includes a herringbone reduction gear 1311, and the herringbone gear segment 1223 is meshed with the herringbone reduction gear 1311. Since the first-stage transmission assembly 12 and the second-stage transmission assembly 13 are meshed and transmitted through the structure of the herringbone gear teeth, the transmission of the fracturing pump 10 can be more stable, and the structure of the fracturing pump 10 can be more reasonable. Further, the herringbone gear segment 1223 is integrally formed with the second transmission shaft 1221, and the second bevel gear 1222 is detachably connected to the second transmission shaft 1221, so as to facilitate the assembly and processing of the fracturing pump 10, and the manufacturing cost is low.

[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] Alternatively, if Figure 4 and Figure 8 As shown, the herringbone reduction gear 1311 includes a wheel hub 13111, a herringbone left-handed gear 13112 and a herringbone right-handed gear 13113, the herringbone left-handed gear 13112 and the herringbone right-handed gear 13113 are sleeved on the wheel hub 13111, the wheel hub 13111 is sleeved on the first crankshaft 132 and the second crankshaft 133, and the herringbone left-handed gear 13112 and the herringbone right-handed gear 13113 are both engaged with the herringbone gear segment 1223. It can be understood that the herringbone left-handed gear 13112 and the herringbone right-handed gear 13113 are detachably connected to the wheel hub 13111, for example, the herringbone reduction gear 13111 also includes a screw 13114, a nut 13115 and a locking washer 13116. The screw rod 13114 passes through the herringbone left-handed gear 13112, the wheel hub 13111 and the herringbone right-handed gear 13113 in sequence, and are connected through the nut 13115. The anti-loosening gasket 13116 is arranged on the screw rod 13114 to improve the reliability of the herringbone reduction gear 1311 after assembly.

[0046] Alternatively, if Figure 4 and Fig.10As shown, the reduction gear component 131 also includes a spline sleeve 1312, the outer peripheral wall of the spline sleeve 1312 has an outer spline, the inner peripheral wall of the spline sleeve 1312 has an inner spline, the outer peripheral wall of the spline sleeve 1312 cooperates with the inner peripheral wall of the hub 13111, a part of the inner peripheral wall of the spline sleeve 1312 cooperates with the first crankshaft 132, and another part of the inner peripheral wall of the spline sleeve 1312 cooperates with the second crankshaft 133. It can be understood that the inner ring of the hub 13111 cooperates with the outer ring of the spline sleeve 1312, and the inner ring of the spline sleeve 1312 cooperates with the outer peripheral surfaces of the first crankshaft 132 and the second crankshaft 133, so that when the herringbone reduction gear 1311 rotates, the first crankshaft 132 and the second crankshaft 133 can be driven to rotate through the spline sleeve 1312, thereby making the transmission stability of the fracturing pump 10 better, and easy to manufacture and process, and low in use cost.

[0047] Alternatively, if Figure 4 As shown, the hub 13111 is respectively provided with second cylindrical roller bearings 1313 at both ends along the axial direction thereof, and an axial floating clearance is provided in the second cylindrical roller bearing 1313. For example, the second cylindrical roller bearing 1313 may be an NJ-type cylindrical roller bearing, and since the NJ-type bearings used in pairs have a certain floating clearance in the axial direction, the reduction gear component 131 can be "automatically centered" under the action of the second transmission shaft 1221, thereby enabling the reduction gear component 131 to find the best meshing position with the herringbone gear segment 1223.

[0048] In some embodiments, Figure 5 and Figure 6 As shown, the fracturing pump 10 also includes a guide assembly 134, which includes a first guide box 1341, a second guide box 1342, a crosshead connecting rod component 1343 and a pull rod 1344. There are multiple crosshead connecting rod components 1343, wherein a part of the crosshead connecting rod components 1343 is connected to the first crankshaft 132 and is arranged in the first guide box 1341, and another part of the crosshead connecting rod components 1343 is connected to the second crankshaft 133 and is arranged in the second guide box 1342. The crosshead connecting rod component 1343 is connected to the pull rod 1344 to push the pull rod 1344 to reciprocate.

[0049] Alternatively, if Figure 5 and Figure 6 As shown, the first guide box 1341 and the second guide box 1342 can be designed according to actual needs. For example, the first guide box 1341 and the second guide box 1342 can be designed as 2 cylinders, 3 cylinders or 4 cylinders, and the first guide boxes 1341 and the second guide boxes 1342 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.

[0050] 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.

[0051] According to a fracturing vehicle of another 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. 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, thereby extending the service life of the fracturing pump 10.

[0052] 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 its crankshaft axis 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.

[0053] 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 reduction 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.

[0054] Specifically, Figure 1As 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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 reduction gear component, a first crankshaft and a second crankshaft, wherein the first crankshaft and the second crankshaft are respectively arranged on both sides of the reduction gear component in an axial direction, and the reduction 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 includes a herringbone gear segment, the reduction gear component includes a herringbone reduction gear, the herringbone gear segment is meshed with the herringbone reduction gear, the herringbone gear segment is integrally formed with the second transmission shaft, the second bevel gear is detachably connected to the second transmission shaft, the herringbone reduction gear includes 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 first crankshaft and the second crankshaft, the herringbone left-handed gear and the herringbone right-handed gear are both meshed with the herringbone gear segment; It also includes a guide assembly, which includes a first guide box, a second guide box, a crosshead connecting rod component and a pull rod. There are multiple crosshead connecting rod components, wherein a part of the crosshead connecting rod components are connected to the first crankshaft and are arranged in the first guide box, and another part of the crosshead connecting rod components are connected to the second crankshaft and are arranged in the second guide box. The crosshead connecting rod components are connected to the pull rod to push the pull rod to reciprocate.

2. The fracturing pump according to claim 1, characterized in that: The reduction gear component also includes 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, a part of the inner circumferential wall of the spline sleeve cooperates with the first crankshaft, and another part of the inner circumferential wall of the spline sleeve cooperates with the second crankshaft.

3. The fracturing pump according to claim 1, characterized in that: 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.

4. 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.

5. 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 4, 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.

6. The fracturing truck according to claim 5, 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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