High-pressure cleaning machine

Abstract

The high-pressure cleaning machine comprises a reciprocating mechanism and a pump assembly, the reciprocating mechanism comprises a rotating transmission part, a reciprocating body and a rolling part, the pump assembly comprises a cylinder body, an input pipe, an output pipe and a plunger, the cylinder body is provided with a volume cavity, a first inlet, a second inlet, a first outlet and a second outlet, and the first inlet, the second inlet, the first outlet and the second outlet communicate with the volume cavity; the plunger divides the volume cavity into a first containing cavity and a second containing cavity, and the plunger is driven by the reciprocating body to reciprocate in the volume cavity, so that the input pipe alternately pumps fluid into the first containing cavity or the second containing cavity through the first inlet or the second inlet. And fluid in the first accommodating cavity or the second accommodating cavity is alternately discharged from the output pipe through the first outlet or the second outlet. According to the high-pressure cleaning machine, rotation of the rotary transmission piece is converted into linear reciprocating motion of the reciprocating body through movement of the rolling piece along the guide groove, and therefore the axial stability of the reciprocating body is good; the plunger is driven by the reciprocating body to alternately conduct compression work on the first containing cavity and the second containing cavity, so that the liquid pumping efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of high-pressure cleaning, and in particular to a high-pressure cleaning machine. Background Art

[0002] A high-pressure cleaning machine is a machine that uses a power device to make a high-pressure plunger pump generate high-pressure water to wash the surface of an object. It can peel off and wash away dirt to achieve the purpose of cleaning the surface of an object.

[0003] In the related art, high-pressure cleaning machines mainly include inclined disk three-plunger cleaning machines and crankshaft three-plunger cleaning machines. However, no matter whether it is an inclined disk three-plunger cleaning machine or a crankshaft three-plunger cleaning machine, when it is working, the reciprocating motion of the plunger will be subject to the deflection force from the power device, and the greater the pressure, the greater the eccentric friction, which will affect the stability of the plunger movement and thus affect the stability of the pumping liquid; moreover, the plunger can only work in one direction, for example, the plunger only works when moving forward. Therefore, the pumping efficiency of this type of high-pressure cleaning machine is generally not high. Summary of the invention

[0004] Based on this, it is necessary to provide a high-pressure cleaning machine to improve the stability and efficiency of the pump liquid.

[0005] The present application provides a high-pressure cleaning machine, comprising:

[0006] A reciprocating mechanism, comprising a rotating transmission member, a reciprocating body and a rolling member, wherein the rotating transmission member is provided with a guide groove, the rolling member is provided between the rotating transmission member and the reciprocating body, and the rolling member is used to move along the guide groove and drive the reciprocating body to move along the axial direction of the rotating transmission member when the rotating transmission member rotates;

[0007] A pump assembly, comprising a cylinder, an input pipe, an output pipe and a plunger, wherein the cylinder has a volume chamber and a first inlet, a second inlet, a first outlet and a second outlet connected to the volume chamber, wherein the first inlet and the second inlet are both unidirectionally connected to the input pipe, and the first outlet and the second outlet are both unidirectionally connected to the output pipe; the plunger is arranged in the volume chamber to separate the volume chamber into a first volume chamber and a second volume chamber, and the plunger is connected to the reciprocating body and is used to reciprocate in the volume chamber driven by the reciprocating body;

[0008] When the plunger moves in a first direction relative to the cylinder body, the input pipe pumps fluid into the first cavity through the first inlet, and the plunger discharges the fluid in the second cavity from the output pipe through the second outlet; when the plunger moves in a second direction relative to the cylinder body, the input pipe pumps fluid into the second cavity through the second inlet, and the plunger discharges the fluid in the first cavity from the output pipe through the first outlet, and the first direction and the second direction are opposite directions.

[0009] In one embodiment, the first inlet, the second inlet, the first outlet and the second outlet are all provided with a one-way valve for directing the fluid from the input pipe to the output pipe.

[0010] In one of the embodiments, a one-way valve is provided in the output pipe to allow the fluid to flow out of the output pipe in one direction.

[0011] In one embodiment, the output pipe is provided with a pressure gauge and / or a pressure switch.

[0012] In one embodiment, the guide groove includes a first guide groove and a second guide groove located on the circumferential surface of the rotating transmission member, the first guide groove and the second guide groove are arranged at intervals along the axial direction of the rotating transmission member, and their trajectories are closed curves that surround the rotating transmission member, the closed curve has peaks and troughs that are staggered in the axial and circumferential directions of the rotating transmission member, and the peaks in the trajectory of the first guide groove and the peaks in the trajectory of the second guide groove are staggered in the circumferential direction of the rotating transmission member; the reciprocating body is provided with a first mounting portion and a second mounting portion that are relatively fixed, the rolling element includes a first rolling element and a second rolling element, the first rolling element is arranged on the first mounting portion and cooperates with the first guide groove, the second rolling element is arranged on the second mounting portion and cooperates with the second guide groove, when the rotating transmission member rotates, the first rolling element moves along the first guide groove, the second rolling element moves along the second guide groove, and the displacement changes of the first rolling element and the second rolling element in the axial direction of the rotating transmission member are equal.

[0013] In one embodiment, the trajectories of the first guide groove and the second guide groove are both sinusoidal curves with the same amplitude, and the number of peaks and troughs in the trajectories of the first guide groove and the second guide groove are equal, and in the axial direction of the rotating transmission member, the peaks in the trajectory of the first guide groove are opposite to the troughs in the trajectory of the second guide groove.

[0014] In one embodiment, the number of the first rolling elements and the number of the second rolling elements are both 2, and the connecting line of the two first rolling elements and the connecting line of the two second rolling elements both intersect the center line of the rotating transmission element at right angles.

[0015] In one embodiment, the reciprocating mechanism also includes a base, a box and at least two guide rods, the box is connected to the base to enclose a movable space, the rotating transmission member, the reciprocating body and the guide rods are all arranged in the movable space, the two ends of each guide rod are respectively connected to the base and the box, and the guide rods are parallel to the axial direction of the rotating transmission member, the reciprocating body is slidably connected to the guide rods, and when the rotating transmission member rotates relative to the base, the reciprocating body reciprocates along the guide rods in the movable space driven by the rotating transmission member.

[0016] In one embodiment, it also includes a driving mechanism, which is arranged on the side of the base facing away from the box body, and the driving mechanism includes a motor, a planetary reduction gear set and a planetary carrier output shaft, the planetary reduction gear set is connected between the motor and the planetary carrier output shaft, the planetary carrier output shaft is connected to the rotating transmission member, and the planetary carrier output shaft is used to transmit the torque output by the motor to the rotating transmission member, so that the rotating transmission member rotates relative to the base.

[0017] In one embodiment, the planetary carrier output shaft includes a rotating disk and a rotating shaft that are coaxially connected, and the end of the rotating transmission member facing the rotating disk is formed with a mounting hole and a clamping protrusion located on the outer periphery of the mounting hole, and the end of the rotating shaft away from the rotating disk is passed through the mounting hole and connected to the rotating transmission member; the base is provided with a through hole for mounting the planetary carrier output shaft, and the through hole has a tapered section, and the two ends of the tapered section respectively form a first step groove and a second step groove; the base is provided with a coaxially arranged first plane bearing, a second plane bearing, a first rolling bearing and a second rolling bearing, the first plane bearing is arranged in the first step groove, one side of the first plane bearing axially abuts against the rotating disk, and the other side maintains a gap with the rotating shaft; the second plane bearing is arranged in the second step groove, one side of the second plane bearing axially abuts against the end face of the clamping protrusion, and the other side maintains a gap with the rotating shaft; the first rolling bearing is sleeved between the peripheral side wall of the rotating disk and the inner wall of the base, and the second rolling bearing is sleeved between the outer peripheral wall of the clamping protrusion and the inner wall of the base.

[0018] In the above-mentioned high-pressure cleaning machine, since the reciprocating mechanism utilizes the movement of the rolling element along the guide groove to convert the rotation of the rotating transmission element into the linear reciprocating motion of the reciprocating body, the axial stability of the reciprocating body is good. Therefore, when the reciprocating body is utilized to drive the plunger to reciprocate in the cylinder body, the plunger will not be subjected to a biasing force, so that the friction between the plunger and the cylinder body is small, and a more stable axial reciprocating motion can be obtained. Moreover, in the high-pressure cleaning machine of the present application, when the plunger moves in a first direction relative to the cylinder body, the input pipe pumps fluid into the first cavity through the first inlet, and the plunger discharges the fluid in the second cavity from the output pipe through the second outlet; when the plunger moves in a second direction relative to the cylinder body, the input pipe pumps fluid into the second cavity through the second inlet, and the plunger discharges the fluid in the first cavity from the output pipe through the first outlet, and the first direction and the second direction are opposite directions. Based on this, during the rotation of the rotating transmission part, the plunger can alternately compress the first cavity and the second cavity to perform work. Then, when the high-pressure cleaning machine is used for cleaning, the plunger can perform work both forward and backward, thereby improving the pumping stability and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying any creative work.

[0020] FIG. 1 is a schematic diagram of the assembly structure of a high-pressure cleaning machine according to an embodiment of the present application.

[0021] FIG. 2 is a schematic diagram of the structure of the high-pressure cleaning machine shown in FIG. 1 from a top view.

[0022] FIG3 is a schematic diagram of the cross-sectional structure of the high-pressure cleaning machine in FIG2 along line II.

[0023] FIG. 4 is a schematic diagram of the cross-sectional structure of the high-pressure cleaning machine in FIG. 2 along line II-II.

[0024] FIG5 is a schematic cross-sectional view of a portion of a pump assembly in a high-pressure cleaning machine according to an embodiment.

[0025] FIG6 is a schematic diagram of an exploded structure of a reciprocating mechanism of a high-pressure cleaning machine according to another embodiment of the present application.

[0026] FIG. 7 is a schematic diagram of the arrangement positions of the first rolling element and the second rolling element relative to the reciprocating body in the reciprocating mechanism of the high-pressure cleaning machine shown in FIG. 6 .

[0027] FIG. 8 is a schematic structural diagram of a rotating transmission member in the reciprocating mechanism of the high-pressure cleaning machine shown in FIG. 6 .

[0028] FIG. 9 is a schematic structural diagram of the rotating transmission member in the reciprocating mechanism of the high-pressure cleaning machine shown in FIG. 6 from another perspective.

[0029] Description of Figure Numbers:

[0030] 100, high pressure cleaning machine; 10, reciprocating mechanism; 11, rotating transmission member; C, guide groove; 11a, first guide groove; 11b, second guide groove; 111, mounting hole; 112, cam; 12, reciprocating body; 12a, first mounting portion; 12b, second mounting portion; 12c, linear bearing; 121, mounting groove; 122, ball sleeve; 123, ball; 124, end cover; 13, rolling member; 13a, first rolling member; 13b, second rolling member; 14, base; 141, through hole; 141a, necking section; 141b, first step groove; 141c, second step groove; 14a, first plane bearing; 14b, second plane bearing; 14c , first rolling bearing; 14d, second rolling bearing; 15, housing; 15a, shaft hole; 16, guide rod; 18, bushing; 19, grid ring; 20, pump assembly; DT, one-way valve; 21, cylinder; 211, volume chamber; 211a, first volume chamber; 211b, second volume chamber; 212, first inlet; 213, second inlet; 214, first outlet; 215, second outlet; 22, input pipe; 23, output pipe; 24, plunger; 25, piston rod; 26, pressure gauge; 27, pressure switch; 30, driving mechanism; 31, motor; 32, planetary reduction gear set; 33, planetary carrier output shaft; 33a, rotating disk; 33b, rotating shaft. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] In the description of the present application, it should be understood that if 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0033] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; 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 this application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0036] It should be noted that if an element is referred to as being "fixed to" or "provided on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0037] As shown in FIG. 1 , an embodiment of the present application provides a high-pressure cleaning machine 100 , including a reciprocating mechanism 10 and a pump assembly 20 , wherein the reciprocating mechanism 10 is used to provide a reciprocating force for the pump assembly 20 when pumping.

[0038] As shown in combination with Figures 2 and 3, the reciprocating mechanism 10 includes a rotating transmission member 11, a reciprocating body 12 and a rolling member 13. The rotating transmission member 11 is provided with a guide groove C, and the rolling member 13 is provided between the rotating transmission member 11 and the reciprocating body 12. The rolling member 13 is used to move along the guide groove C when the rotating transmission member 11 rotates and drive the reciprocating body 12 to move along the axial direction of the rotating transmission member 11.

[0039] As shown in combination with FIG. 4 and FIG. 5 , the pump assembly 20 includes a cylinder 21, an input pipe 22, an output pipe 23 and a plunger 24. The cylinder 21 has a volume chamber 211 and a first inlet 212, a second inlet 213, a first outlet 214 and a second outlet 215 connected to the volume chamber 211. The first inlet 212 and the second inlet 213 are both unidirectionally connected to the input pipe 22, and the first outlet 214 and the second outlet 215 are both unidirectionally connected to the output pipe 23. The plunger 24 is disposed in the volume chamber 211 to separate the volume chamber 211 into a first volume chamber 211a and a second volume chamber 211b. The plunger 24 is connected to the reciprocating body 12 and is used to reciprocate in the volume chamber 211 driven by the reciprocating body 12.

[0040] In the high-pressure cleaning machine 100 of the embodiment of the present application, when the plunger 24 moves in the first direction relative to the cylinder body 21, the input pipe 22 pumps fluid into the first cavity 211a through the first inlet 212, and the plunger 24 discharges the fluid in the second cavity 211b from the output pipe 23 through the second outlet 215; when the plunger 24 moves in the second direction relative to the cylinder body 21, the input pipe 22 pumps fluid into the second cavity 211b through the second inlet 213, and the plunger 24 discharges the fluid in the first cavity 211a from the output pipe 23 through the first outlet 214, and the first direction is opposite to the second direction. Based on this, during the rotation of the rotating transmission member 11, the plunger 24 can alternately compress the first cavity 211a and the second cavity 211b to do work, and then when the high-pressure cleaning machine 100 is used for cleaning, the plunger 24 can do work both forward and backward, thereby improving the pumping efficiency.

[0041] It should be noted here that since the reciprocating mechanism 10 utilizes the movement of the rolling member 13 along the guide groove C to convert the rotation of the rotating transmission member 11 into the linear reciprocating motion of the reciprocating body 12, the reciprocating body 12 has good axial stability. Therefore, when the reciprocating body 12 is used to drive the plunger 24 to reciprocate in the cylinder body 21, the plunger 24 will not be subjected to a deflection force, so that the friction between the plunger 24 and the cylinder body 21 is small, and a more stable axial reciprocating motion can be obtained, thereby improving the stability of the pump liquid.

[0042] 5 , in some embodiments, the first inlet 212, the second inlet 213, the first outlet 214, and the second outlet 215 are all provided with a one-way valve DT for directing the fluid from the input pipe 22 to the output pipe 23. Thus, the one-way valve DT at the corresponding position allows the fluid to flow in only one direction.

[0043] Specifically in this embodiment, as shown in combination with FIG. 4 and FIG. 5 , the fluid in the input pipe 22 can only flow into the volume chamber 211 in one direction through the first inlet 212 and the second inlet 213. When the plunger 24 moves in the first direction relative to the cylinder body 21, the volume of the first volume chamber 211a increases, and the volume of the second volume chamber 211b decreases. Based on the one-way flowability of the one-way valve DT, the one-way valve DT at the first inlet 212 conducts the input pipe 22 and the first volume chamber 211a, so that the fluid can be pumped from the input pipe 22 into the first volume chamber 211a, and the one-way valve DT at the second inlet 213 is closed to prevent the fluid in the second volume chamber 211b from being squeezed into the input pipe 22 by the plunger 24. Correspondingly, when the plunger 24 moves in the second direction relative to the cylinder body 21, the volume of the first chamber 211a decreases and the volume of the second chamber 211b increases. Based on the one-way flowability of the one-way valve DT, the one-way valve DT at the first inlet 212 is closed to prevent the fluid in the first chamber 211a from being squeezed into the input pipe 22 by the plunger 24. The one-way valve DT at the second inlet 213 connects the input pipe 22 and the second chamber 211b, so that the fluid can be pumped from the input pipe 22 into the second chamber 211b.

[0044] The first outlet 214 and the second outlet 215 can only discharge the fluid in the first cavity 211a and the second cavity 211b out of the output pipe 23 in one direction. When the plunger 24 moves in the first direction relative to the cylinder body 21, the volume of the first cavity 211a increases, and the volume of the second cavity 211b decreases. Based on the one-way flow of the one-way valve DT, the one-way valve DT at the first outlet 214 is closed to facilitate the increase of the volume of the first cavity 211a, increase the negative pressure generated by the first cavity 211a to pump the fluid from the input pipe 22 through the first inlet 212 into the first cavity 211a, and the one-way valve DT at the second outlet 215 connects the second cavity 211b and the output pipe 23, so that the fluid in the second cavity 211b is squeezed to the output pipe 23 by the plunger 24 to be discharged from the output pipe 23. Correspondingly, when the plunger 24 moves toward the second direction relative to the cylinder body 21, the volume of the first volume chamber 211a decreases, and the volume of the second volume chamber 211b increases. Based on the one-way flow of the one-way valve DT, the one-way valve DT at the second outlet 215 is closed to facilitate the increase of the volume of the second volume chamber 211b, increase the negative pressure generated by the second volume chamber 211b to pump the fluid from the input pipe 22 into the second volume chamber 211b through the second inlet 213, and the one-way valve DT at the first outlet 214 conducts the first volume chamber 211a and the output pipe 23, so that the fluid in the first volume chamber 211a is squeezed to the output pipe 23 by the plunger 24 to be discharged from the output pipe 23.

[0045] In some embodiments, a one-way valve DT is provided in the output pipe 23 to allow the fluid to flow out of the output pipe 23 in one direction, thereby avoiding backflow when the fluid is pumped out of the output pipe 23, effectively increasing the pressure of the fluid pumped out of the output pipe 23, and improving the cleaning effect of the high-pressure cleaning machine 100 on the object to be cleaned. The output pipe 23 is provided with a pressure gauge 26 and / or a pressure switch 27, so as to facilitate the checking of hydraulic pressure and pressure control.

[0046] As shown in combination with Figures 6 and 7, in another embodiment of the reciprocating mechanism 10, the guide groove C includes a first guide groove 11a and a second guide groove 11b provided on the circumferential surface of the rotating transmission member 11. The first guide groove 11a and the second guide groove 11b are arranged at intervals along the axial direction of the rotating transmission member 11, and their trajectories are closed curves that surround the rotating transmission member 11. The reciprocating body 12 is provided with a relatively fixed first mounting portion 12a and a second mounting portion 12b. The rolling element includes a first rolling element 13a and a second rolling element 13b. It can be understood that the first mounting portion 12a can be multiple, so as to meet the need of installing multiple first rolling elements 13a. Correspondingly, the second mounting portion 12b can be multiple to meet the need of installing multiple second rolling elements 13b.

[0047] The first rolling member 13a is disposed on the first mounting portion 12a and matches with the first guide groove 11a. The second rolling member 13b is disposed on the second mounting portion 12b and matches with the second guide groove 11b. The first rolling member 13a and the first guide groove 11a are rolling matched, and the second rolling member 13b and the second guide groove 11b are rolling matched, so that the friction force when the first rolling member 13a moves along the first guide groove 11a and the friction force when the second rolling member 13b moves along the second guide groove 11b can be reduced, thereby improving the smoothness of the reciprocating motion of the reciprocating body 12 in the reciprocating mechanism 10.

[0048] As shown in combination with FIG8 and FIG9, the closed curve has crests and troughs staggered in the axial and circumferential directions of the rotary transmission member 11, and the crests in the trajectory of the first guide groove 11a and the crests in the trajectory of the second guide groove 11b are staggered in the circumferential direction of the rotary transmission member 11. Therefore, during the rotation of the rotary transmission member 11, the first rolling member 13a moving along the first guide groove 11a and the second rolling member 13b moving along the second guide groove 11b can respectively play a stabilizing supporting effect at different positions on the circumferential side of the corresponding rotary transmission member 11, so that the reciprocating body 12 is driven by the first rolling member 13a and the second rolling member 13b to move more stably in the axial direction.

[0049] It should be noted that when the rotary transmission member 11 rotates, the first rolling member 13a moves along the first guide groove 11a, and the second rolling member 13b moves along the second guide groove 11b. The displacement changes of the first rolling member 13a and the second rolling member 13b in the axial direction of the rotary transmission member 11 are equal, so that the axial driving steps of the first rolling member 13a and the second rolling member 13b on the rotary transmission member 11 are coordinated and consistent, reducing the probability of the rotary transmission member 11 being stuck, so as to improve the reliability of the reciprocating motion.

[0050] As shown in Figures 8 and 9, the trajectories of the first guide groove 11a and the second guide groove 11b are both sinusoidal curves with the same amplitude. In this way, the trajectories of the first guide groove 11a and the second guide groove 11b are sinusoidal curves. On the one hand, this arrangement ensures that the first guide groove 11a and the second guide groove 11b respectively guide the periodic movement of the first rolling element 13a and the second rolling element 13b to achieve the reciprocating motion of the reciprocating body 12. On the other hand, with this structural design, the trajectories of the first rolling element 13a and the second rolling element 13b when rolling along the first guide groove 11a and the second guide groove 11b are relatively smooth, thereby avoiding situations such as ball jumping or jamming. Since the amplitudes of the sinusoidal curves corresponding to the trajectories of the first guide groove 11a and the second guide groove 11b are the same, it is only necessary to set the first rolling member 13a and the second rolling member 13b correspondingly at the peak position or the trough position of the first guide groove 11a and the second guide groove 11b, so that when the rotating transmission member 11 rotates, the displacement change of the first rolling member 13a along the first guide groove 11a in the axial direction of the rotating transmission member 11 is consistent with the displacement change of the second rolling member 13b along the second guide groove 11b in the axial direction of the rotating transmission member 11. Therefore, this structural setting is conducive to determining the installation position of the first rolling member 13a and the second rolling member 13b relative to the rotating transmission member 11, making the assembly of the reciprocating mechanism 10 more convenient.

[0051] It should be noted that the number of peaks and troughs in the trajectory of the first guide groove 11a and the second guide groove 11b are equal. Specifically, the number of peaks in the trajectory of the first guide groove 11a is equal to the number of troughs in the trajectory of the first guide groove 11a, and the number of peaks in the trajectory of the second guide groove 11b is the same as the number of troughs in the trajectory of the second guide groove 11b, and is consistent with the number of peaks in the trajectory of the first guide rail. In this embodiment, in the axial direction of the rotating transmission member 11, the peaks in the trajectory of the first guide groove 11a are directly opposite to the troughs in the trajectory of the second guide groove 11b. In this way, when the first rolling member 13a is located at the trough position of the first guide groove 11a, the second rolling member 13b is located at the trough position of the second guide groove 11b, and the first rolling member 13a and the second rolling member 13b are staggered with each other in the circumferential direction of the rotating transmission member 11.

[0052] In the embodiment of the present application, the first rolling member 13a and the second rolling member 13b are staggered with each other in the circumferential direction of the rotating transmission member 11, which means that the line connecting the first rolling member 13a and the second rolling member 13b is not parallel to the center line of the rotating transmission member 11. In other words, the first rolling member 13a and the second rolling member 13b have different positions in the circumferential direction of the corresponding rotating transmission member 11.

[0053] In some embodiments, the number of the first rolling elements 13a and the number of the second rolling elements 13b are both 2, and the connecting line of the two first rolling elements 13a and the connecting line of the two second rolling elements 13b are perpendicular to the center line of the rotating transmission member 11. In this embodiment, the two first rolling elements 13a and the two second rolling elements 13b can realize the support and positioning between the reciprocating body 12 and the rotating transmission member 11 in two perpendicular directions perpendicular to the center line of the rotating transmission member 11, so that the reciprocating body 12 can move smoothly in the axial direction driven by the rotating transmission member 11 and is not easy to shake in the radial direction, so that the reciprocating body 12 can maintain good motion stability in the axial direction of the rotating transmission member 11.

[0054] In some embodiments, the reciprocating mechanism 10 further includes a base 14, a box 15 and at least two guide rods 16. The box 15 is connected to the base 14 to enclose an activity space, and the rotating transmission member 11, the reciprocating body 12 and the guide rods 16 are all arranged in the activity space. The two ends of each guide rod 16a are respectively connected to the base 14 and the box 15. The guide rods 16 are parallel to the axial direction of the rotating transmission member 11, and the reciprocating body 12 is slidably connected to the guide rods 16. When the rotating transmission member 11 rotates, the reciprocating body 12 reciprocates in the activity space along the guide rods 16 driven by the rotating transmission member 11. In this embodiment, the activity space formed by the connection and enclosure of the box 15 and the base 14 can provide a space for assembly and activity for the rotating transmission member 11, the reciprocating body 12 and the guide rods 16, thereby improving the assembly stability between these structures. At the same time, under this structural setting, the structural members in the activity space are not easy to enter dust, so that this structural setting of the box 15 and the base 14 is conducive to dust prevention of the reciprocating mechanism 10. In some embodiments, sealing rings, sealing rings and other structures may be provided at corresponding positions of the box body 15 and the base 14 to achieve waterproofing.

[0055] Since the reciprocating body 12 is slidably connected to the guide rod 16, when the rotary transmission member 11 rotates, the reciprocating body 12 slides smoothly along the guide rod 16. The reciprocating body 12 and the guide rod 16 may be slidably connected via a linear bearing 12c, thereby utilizing the linear bearing 12c to reduce the sliding friction between the reciprocating body 12 and the guide rod 16.

[0056] The rotating transmission member 11 is axially limited at the base 14, that is, the rotating transmission member 11 will not move axially relative to the base 14, so that when the rotating transmission member 11 rotates relative to the base 14, the rotational energy can be transmitted to the first rolling member 13a and the second rolling member 13b through the first guide groove 11a and the second guide groove 11b as much as possible, thereby maximizing the displacement change of the first rolling member 13a and the second rolling member 13b along the axial direction of the rotating transmission member 11, which is beneficial to maximizing the reciprocating motion stroke of the reciprocating body 12, so as to improve the transmission efficiency of the reciprocating mechanism 10.

[0057] The reciprocating body 12 is a cavity having an inner cavity, and the rotating transmission member 11 is located in the inner cavity. The side wall of the reciprocating body 12 is provided with a mounting groove 121 penetrating into the inner cavity. The first mounting portion 12a and the second mounting portion 12b both have the mounting groove 121, so that the first rolling member 13a and the second rolling member 13b can be mounted from the outside of the reciprocating body 12 to the corresponding mounting groove 121, so that the first rolling member 13a and the second rolling member 13b can respectively match the first guide groove 11a and the second guide groove 11b.

[0058] As shown in combination with FIG. 6 and FIG. 7 , in some embodiments, a plurality of balls 123 are respectively arranged in the mounting grooves 121 at the first mounting portion 12a and the second mounting portion 12b through ball sleeves 122, and the plurality of balls 123 arranged in the first mounting portion 12a abut against the first rolling member 13a, thereby improving the smoothness of the movement of the first rolling member 13a along the first guide groove 11a. Correspondingly, the plurality of balls 123 arranged in the second mounting portion 12b abut against the second rolling member 13b, thereby improving the smoothness of the movement of the second rolling member 13b along the second guide groove 11b. An end cover 124 is provided at the mounting groove 121. After the plurality of balls 123 are arranged in the corresponding mounting groove 121 by using the ball sleeve 122, the notch of the mounting groove 121 can be covered by the end cover 124 to limit the ball sleeve 122 from detaching from the mounting groove 121. The end cover 124 is detachably connected to the reciprocating body 12, so that when the rolling element or the ball 123 is worn, the end cover 124 can be opened for replacement.

[0059] Of course, in some embodiments, after the ball sleeve 122 installs the plurality of balls 123 into the installation groove 121 , the ball sleeve 122 can be fixed to the reciprocating body 12 by means of clamping or welding.

[0060] The first rolling member 13a and the second rolling member 13b can be balls. Understandably, the diameter of the balls is greater than the diameter of the rolling balls 123, so that the plurality of rolling balls 123 are against the surface of the balls, so that when the balls are rolling, the rolling balls 123 can reduce the friction between the balls and the reciprocating body 12, thereby reducing the stuck phenomenon.

[0061] A guide rod 16 is provided between any adjacent first rolling members 13a and second rolling members 13b in the circumferential direction of the rotating transmission member 11. In this embodiment, the guide rod 16 is provided in the space vacated by the staggered arrangement of the first rolling members 13a and the second rolling members 13b in the circumferential direction of the rotating transmission member 11, so that the reciprocating mechanism 10 does not need to provide additional space for the arrangement. This structural arrangement improves the space utilization rate of the activity space formed by the box body 15 and the base 14, and the guide rod 16 can be used to support and guide the reciprocating body 12, so as to enhance the stability of the reciprocating motion of the reciprocating body 12 in the activity space.

[0062] In the embodiment where the reciprocating mechanism 10 is provided with two first rolling elements 13a and two second rolling elements 13b, the two first rolling elements 13a are arranged at intervals of 180° in the circumferential direction of the rotating transmission element 11, the two second rolling elements 13b are arranged at intervals of 180° in the circumferential direction of the rotating transmission element 11, and any adjacent first rolling elements 13a and second rolling elements 13b are spaced 90° in the circumferential direction of the rotating transmission element 11. At this time, the reciprocating body 12 is subjected to four supporting forces perpendicular to the axial direction of the rotating transmission element 11, and each supporting force is evenly arranged in the axial direction around the rotating transmission element 11, so that the stability of the reciprocating body 12 moving along the axial direction relative to the rotating transmission element 11 is good.

[0063] Furthermore, the guide rod 16 is arranged at the middle position of the circumferential direction of the reciprocating body 12 corresponding to the adjacent first rolling element 13a and the second rolling element 13b. That is to say, in the axial direction of the rotating transmission member 11, the guide rod 16 is arranged at a 45° interval with the first rolling element 13a, and the guide rod 16 is arranged at a 45° interval with the second rolling element 13b. In this way, the first rolling element 13a, the second rolling element 13b and the guide rod 16 are arranged in the reciprocating mechanism 10 in a central rotationally symmetrical manner around the axial direction of the rotating transmission member 11, which is conducive to maintaining the consistency of the structural weighting in all directions of the reciprocating mechanism 10, so as to reduce the centrifugal phenomenon that occurs when the reciprocating mechanism 10 is biased to one side when working, and therefore, it is conducive to maintaining the overall stability of the reciprocating mechanism 10 when working.

[0064] Again in conjunction with FIG. 3 and FIG. 4 , in some embodiments, the high pressure cleaning machine 100 further includes a driving mechanism 30, which is disposed on the side of the base 14 facing away from the housing 15. The driving mechanism 30 includes a motor 31, a planetary reduction gear set 32, and a planetary carrier output shaft 33. The planetary reduction gear set 32 ​​is connected between the motor 31 and the planetary carrier output shaft 33, and the planetary carrier output shaft 33 is connected to the rotating transmission member 11. The planetary carrier output shaft 33 is used to transmit the torque output by the motor 31 to the rotating transmission member 11, so that the rotating transmission member 11 rotates relative to the base 14. In this embodiment, the planetary reduction gear set 32 ​​can be used to transmit the torque output by the motor 31 to the planetary carrier output shaft 33 with a greater torque, and then the planetary carrier output shaft 33 can drive a heavier load, so as to facilitate the smooth rotation of the rotating transmission member 11.

[0065] 3 and 4, the planet carrier output shaft 33 includes a coaxially connected rotating disk 33a and a rotating shaft 33b. The end of the rotating transmission member 11 facing the rotating disk 33a is formed with a mounting hole 111 and a clamping protrusion 112 located at the periphery of the mounting hole 111, and the end of the rotating shaft 33b away from the rotating disk 33a is penetrated through the mounting hole 111 and connected to the rotating transmission member 11.

[0066] The base 14 is provided with a through hole 141 for mounting the planetary carrier output shaft 33. The through hole 141 has a constricted section 141a, and the two ends of the constricted section 141a respectively form a first step groove 141b and a second step groove 141c. The base 14 is provided with a first plane bearing 14a, a second plane bearing 14b, a first rolling bearing 14c and a second rolling bearing 14d arranged coaxially. The first plane bearing 14a is arranged in the first step groove 141b, one side of the first plane bearing 14a axially abuts against the rotating disk 33a, and the other side maintains a gap with the rotating shaft 33b, so that there is no rotational interference between the rotating shaft 33b and the base 14. The second plane bearing 14b is arranged in the second step groove 141c, one side of the second plane bearing 14b axially abuts against the end face of the clamping protrusion 112, and the other side maintains a gap with the rotating shaft 33b, so that there is no rotational interference between the rotating shaft 33b and the base 14.

[0067] The first rolling bearing 14 c is sleeved between the peripheral wall of the rotating disk 33 a and the inner wall of the base 14 , and the second rolling bearing 14 d is sleeved between the outer peripheral wall of the protrusion 112 and the inner wall of the base 14 .

[0068] The first plane bearing 14 a , the second plane bearing 14 b , the first rolling bearing 14 c and the second rolling bearing 14 d may be formed to have rotation dimensions in the axial direction and the circumferential direction, thereby improving the smoothness of the rotation of the rotating transmission member 11 .

[0069] The rotating shaft 33b and the mounting hole 111 of the rotating transmission member 11 can be connected by clamping or welding, or can be locked by a nut after the rotating shaft 33b passes through the mounting hole 111. The connection method between the rotating shaft 33b and the rotating transmission member 11 is not limited here.

[0070] It should be noted that, in some embodiments, the high-pressure cleaning machine 100 further includes a piston rod 25, and the plunger 24 and the reciprocating body 12 can be connected via the piston rod 25. Specifically, one end of the piston rod 25 is connected to the reciprocating body 12, and the other end of the piston rod 25 is connected to the plunger 24. The piston rod 25 and the reciprocating body 12 can be connected by thread, hot melt or snap connection, or the piston rod 25 and the reciprocating body 12 can be connected by bolts. The plunger 24 can be threadedly connected to the piston rod 25, or it can be snap-connected to the piston rod 25. The connection method between the piston rod 25 and the plunger 24, and the connection method between the piston rod 25 and the reciprocating body 12 are not limited here.

[0071] In some embodiments, the box body 15 is provided with an axial hole 15a for the piston rod 25 to extend out, and a bushing 18 is sleeved between the inner wall of the axial hole 15a and the outer wall of the piston rod 25. The bushing 18 is used to seal the gap between the inner wall of the axial hole 15a and the outer wall of the piston rod 25, thereby achieving waterproof and dustproof effects.

[0072] The bushing 18 can be made of wear-resistant materials such as plastic or rubber.

[0073] In some embodiments, a Gly ring 19 may be further provided in the shaft hole 15a, and the Gly ring 19 is sleeved on the piston rod 25, so as to further enhance the sealing effect by using the Gly ring 19. It should be noted here that the Gly ring 19 has low friction, no creeping, small starting force, and high pressure resistance, so that the Gly ring 19 is used to seal between the piston rod 25 and the shaft hole 15a, and will not hinder the piston rod 25 from moving smoothly relative to the box body 15 under the drive of the reciprocating body 12.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the inventive concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A high pressure cleaning machine, characterized in that: include: A reciprocating mechanism, comprising a rotating transmission member, a reciprocating body and a rolling member, wherein the rotating transmission member is provided with a guide groove, the rolling member is provided between the rotating transmission member and the reciprocating body, and the rolling member is used to move along the guide groove and drive the reciprocating body to move along the axial direction of the rotating transmission member when the rotating transmission member rotates; A pump assembly, comprising a cylinder, an input pipe, an output pipe and a plunger, wherein the cylinder has a volume chamber and a first inlet, a second inlet, a first outlet and a second outlet connected to the volume chamber, wherein the first inlet and the second inlet are both unidirectionally connected to the input pipe, and the first outlet and the second outlet are both unidirectionally connected to the output pipe; the plunger is arranged in the volume chamber to separate the volume chamber into a first volume chamber and a second volume chamber, and the plunger is connected to the reciprocating body and is used to reciprocate in the volume chamber driven by the reciprocating body; When the plunger moves in a first direction relative to the cylinder body, the input pipe pumps fluid into the first cavity through the first inlet, and the plunger discharges the fluid in the second cavity from the output pipe through the second outlet; When the plunger moves in a second direction relative to the cylinder body, the input pipe pumps fluid into the second cavity through the second inlet, and the plunger discharges the fluid in the first cavity from the output pipe through the first outlet. The first direction is opposite to the second direction.

2. The high pressure cleaning machine according to claim 1, characterized in that: The first inlet, the second inlet, the first outlet and the second outlet are all provided with a one-way valve for directing the fluid from the input pipe to the output pipe.

3. The high pressure cleaning machine according to claim 1 or 2, characterized in that: A one-way valve is arranged in the output pipe to allow the fluid to flow out of the output pipe in one direction.

4. The high pressure cleaning machine according to claim 3, characterized in that: The output pipe is provided with a pressure gauge and / or a pressure switch.

5. The high pressure cleaning machine according to claim 1, characterized in that: The guide groove includes a first guide groove and a second guide groove located on the circumferential surface of the rotating transmission member, the first guide groove and the second guide groove are arranged at intervals along the axial direction of the rotating transmission member, and their trajectories are closed curves that surround the rotating transmission member, the closed curve has peaks and troughs that are staggered in the axial and circumferential directions of the rotating transmission member, and the peaks in the trajectory of the first guide groove and the peaks in the trajectory of the second guide groove are staggered in the circumferential direction of the rotating transmission member; the reciprocating body is provided with a first mounting portion and a second mounting portion that are relatively fixed, and the rolling element includes a first rolling element and a second rolling element, the first rolling element is arranged on the first mounting portion and cooperates with the first guide groove, and the second rolling element is arranged on the second mounting portion and cooperates with the second guide groove, when the rotating transmission member rotates, the first rolling element moves along the first guide groove, the second rolling element moves along the second guide groove, and the displacement changes of the first rolling element and the second rolling element in the axial direction of the rotating transmission member are equal.

6. The high pressure cleaning machine according to claim 5, characterized in that: The trajectories of the first guide groove and the second guide groove are both sinusoidal curves with the same amplitude, and the number of peaks and troughs in the trajectories of the first guide groove and the second guide groove is equal. In the axial direction of the rotating transmission member, the peaks in the trajectory of the first guide groove are opposite to the troughs in the trajectory of the second guide groove.

7. The high pressure cleaning machine according to claim 5 or 6, characterized in that: The number of the first rolling elements and the number of the second rolling elements are both 2, and a line connecting the two first rolling elements and a line connecting the two second rolling elements both intersect perpendicularly with a center line of the rotating transmission element.

8. The high pressure cleaning machine according to claim 7, characterized in that: The reciprocating mechanism also includes a base, a box body and at least two guide rods. The box body is connected to the base to enclose an activity space. The rotating transmission member, the reciprocating body and the guide rods are all arranged in the activity space. The two ends of each guide rod are respectively connected to the base and the box body, and the guide rods are parallel to the axial direction of the rotating transmission member. The reciprocating body is slidably connected to the guide rods. When the rotating transmission member rotates relative to the base, the reciprocating body reciprocates along the guide rods in the activity space driven by the rotating transmission member.

9. The high pressure cleaning machine according to claim 8, characterized in that: It also includes a driving mechanism, which is arranged on a side of the base facing away from the box body, and includes a motor, a planetary reduction gear set and a planetary carrier output shaft, the planetary reduction gear set is connected between the motor and the planetary carrier output shaft, the planetary carrier output shaft is connected to the rotating transmission member, and the planetary carrier output shaft is used to transmit the torque output by the motor to the rotating transmission member, so that the rotating transmission member rotates relative to the base.

10. The high pressure cleaning machine according to claim 9, characterized in that: The planetary carrier output shaft includes a rotating disk and a rotating shaft that are coaxially connected, and an installation hole and a clamping protrusion located on the outer periphery of the installation hole are formed at the end of the rotating transmission member facing the rotating disk, and an end of the rotating shaft away from the rotating disk is passed through the installation hole and connected to the rotating transmission member; the base is provided with a through hole for mounting the planetary carrier output shaft, and the through hole has a tapered section, and the two ends of the tapered section respectively form a first step groove and a second step groove; the base is provided with a first plane bearing, a second plane bearing, a first rolling bearing and a second rolling bearing that are coaxially arranged, the first plane bearing is arranged in the first step groove, one side of the first plane bearing axially abuts against the rotating disk, and the other side maintains a gap with the rotating shaft; the second plane bearing is arranged in the second step groove, one side of the second plane bearing axially abuts against the end face of the clamping protrusion, and the other side maintains a gap with the rotating shaft; the first rolling bearing is sleeved between the peripheral side wall of the rotating disk and the inner wall of the base, and the second rolling bearing is sleeved between the outer peripheral wall of the clamping protrusion and the inner wall of the base.

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