Large-spacing transfer case water pump

Abstract

The utility model relates to the technical field of water pump structures, in particular to a large-spacing transfer case water pump which comprises a pump body, a transfer case and a pump shaft, an impeller set is arranged in the pump body, the impeller set is sleeved on the pump shaft, the pump shaft is arranged in the pump body and the transfer case in a penetrating mode, and an input shaft, an intermediate shaft, an output shaft and a gear shifting assembly are arranged in the transfer case. The input shaft, the intermediate shaft and the output shaft are arranged in parallel, the gear shifting assembly comprises a shifting fork and a piston assembly, one end of the shifting fork is connected with the piston assembly, the other end of the shifting fork is connected with the input shaft, an air pipe is arranged at the top of the transfer case, and the piston assembly moves in the air pipe to drive the shifting fork to move synchronously so as to control the pump shaft and the output shaft to rotate. According to the transfer case, the intermediate shaft is additionally arranged between the input shaft and the output shaft, more gear combinations can be provided due to the existence of the intermediate shaft, wider transmission ratio changes are achieved, the rotating speed of the output shaft can better meet actual requirements, and therefore the transmission efficiency of the transfer case is improved, and transmission stability and reliability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump structures, in particular to a large-spacing transfer case water pump. Background Art

[0002] A water pump is a machine that transports liquid or pressurizes liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the liquid energy. It is mainly used to transport liquids including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. The main purpose of setting a transfer case in a water pump is to achieve more flexible power distribution and transmission control. The introduction of the transfer case enables the water pump to adjust the speed and torque ratio between the input shaft and the output shaft according to different working requirements and working conditions. For example, when it is necessary to change the flow or head of the water pump, the transfer case can be used to adjust the transmission ratio to meet various requirements in practical applications. In addition, the transfer case can also protect the water pump and the power source. When the water pump encounters an overload or abnormal working condition, the transfer case can adjust the transmission ratio or cut off the power transmission to avoid equipment damage.

[0003] The Chinese utility model patent with patent application number 201822073261.2 includes a housing, a driving shaft mounted on the housing, a driving gear assembly installed on the driving shaft, a driven shaft assembly, and a clutch assembly for controlling the clutch of the driving gear assembly and the driving shaft. The air source is used to control the movement of the first fork shaft and the second fork shaft respectively, and then the first spline sleeve and the second spline sleeve are controlled to cooperate with the splines of the first driving tooth and the second driving gear respectively, so as to solve the technical problem of synchronous transmission of the first driven shaft and the second driven shaft, and realize the synchronous rotation of the first driven shaft and the second driven shaft by the driving shaft on the automobile, so as to drive the synchronous operation of the sprinkler pump and the hydraulic pump or the sprinkler pump and the spray pump.

[0004] Although the patent can complete different tasks separately or synchronously through the transfer case, there are some disadvantages in the transmission of the input shaft. Different modules have different requirements for torque. Secondly, the speeds of the input shaft, output shaft and pump shaft do not directly match. When different modules work synchronously, it is easy to cause problems such as reduced transmission efficiency, accelerated wear of components and increased risk of failure.

[0005] Therefore, there is an urgent need for a large-spacing transfer case water pump that can optimize the transmission structure, improve transmission efficiency, synchronization and reliability. Utility Model Content

[0006] In view of the above problems, the utility model provides a large-pitch transfer case water pump, by adding an intermediate shaft between the input shaft and the output shaft, and the input shaft, the intermediate shaft and the output shaft are connected by gear meshing. The existence of the intermediate shaft can provide more gear combinations, thereby achieving a wider range of transmission ratio changes, so that the speed of the output shaft can better meet actual needs. The introduction of the intermediate shaft can achieve the same transmission effect through multi-stage transmission and use smaller-sized gears, thereby reducing the overall size and weight of the transfer case. Secondly, a reasonable gear ratio and transmission route of the intermediate shaft can reduce energy loss, improve the transmission efficiency of the transfer case, and make energy transfer more direct and efficient.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A large-spacing transfer case water pump, comprising:

[0009] Pump body, transfer case and pump shaft;

[0010] An impeller group is arranged in the pump body, the impeller group is sleeved on the pump shaft, the pump body is connected to the transfer case by bolts, and the pump shaft passes through the pump body and the transfer case;

[0011] The transfer case is provided with an input shaft, an intermediate shaft, an output shaft and a shift assembly, wherein the input shaft, the intermediate shaft and the output shaft are arranged in parallel, and the shift assembly is arranged above the input shaft. The shift assembly includes a shift fork and a piston assembly, wherein one end of the shift fork is connected to the piston assembly, and the other end of the shift fork is connected to the input shaft. An air pipe is provided on the top of the transfer case, and the piston assembly is arranged in the air pipe. The movement of the piston assembly in the air pipe drives the shift fork to move synchronously, thereby respectively controlling the rotation of the pump shaft and the output shaft.

[0012] As an improvement, the input shaft is sleeved with a first driving gear and a second driving gear, the first driving gear is arranged opposite to the second driving gear, and sliding bearings are respectively arranged between the first driving gear and the second driving gear and the input shaft, and the sliding bearings are sleeved on the input shaft.

[0013] As an improvement, a spline sleeve is provided between the first driving gear and the second driving gear, the spline sleeve is sleeved on the input shaft, the spline sleeve is slidably provided on the input shaft, the openings at both ends of the spline sleeve are respectively meshed with the first driving gear and the second driving gear, and the spline sleeve is connected to the tail end of the shift fork.

[0014] As an improvement, internal splines meshing with the first driving gear and the second driving gear are arranged inside the openings at both ends of the spline sleeve, and external splines corresponding to the internal splines are arranged at the meshing positions of the first driving gear and the second driving gear with the spline sleeve.

[0015] As an improvement, the first driving gear is meshed with a first driven gear sleeved on the pump shaft, and the input shaft drives the first driven gear to rotate through the first driving gear, thereby driving the pump shaft to rotate.

[0016] As an improvement, the input shaft is connected to the output shaft through the intermediate shaft, a transition gear is sleeved on the intermediate shaft, a second driven gear is sleeved on the output shaft, and the second driving gear is meshedly connected with the transition gear and the second driven gear, so that the input shaft drives the output shaft to rotate synchronously.

[0017] As an improvement, a bearing is arranged between the input shaft and the spline sleeve, an anti-wear plate is arranged between the bearing and the sliding bearing, the anti-wear plate is sleeved on the input shaft, the anti-wear plate is arranged in contact with the sliding bearing, and the spline sleeve slides back and forth along the length direction of the bearing.

[0018] As an improvement, the piston assembly is divided into a first piston and a second piston, the first piston and the second piston are both arranged in the air pipe, the first piston and the second piston are clamped together, and the first piston and the second piston are both provided with a return spring on the side close to the air inlet, and a sealing ring is provided between the outer wall of the first piston and the second piston and the inner wall of the air pipe.

[0019] As an improvement, the impeller assembly includes a first impeller and a second impeller, the first impeller and the second impeller are arranged in parallel, and the first impeller and the second impeller are both fixedly connected to the pump shaft, and a guide vane is also arranged on the back of the first impeller.

[0020] The beneficial effects of the utility model are:

[0021] (1) The utility model provides an intermediate shaft between the input shaft and the output shaft. The existence of the intermediate shaft can provide more gear combinations. Through the combination of gears with different numbers of teeth on the intermediate shaft, a wider range of transmission ratio changes can be achieved, which enables the transfer case to adapt to different usage requirements. Secondly, the intermediate shaft can share the load of the input shaft and the output shaft, reducing the force on a single shaft, thereby improving the service life and reliability of the shaft;

[0022] (2) The arrangement of the intermediate shaft in the utility model helps to arrange the positions of the gears and other components more reasonably, making the structure of the transfer case more compact and easier to install in a limited space. In addition, the gears on the intermediate shaft can play a certain buffering role, reducing the impact and vibration between the input shaft and the output shaft, making the power transmission more stable, reducing noise, and improving the reliability of the entire transmission system.

[0023] In summary, the utility model has the advantages of flexible adjustment of transmission ratio, reduction of load on input shaft and output shaft, improvement of transmission stability and reliability, compact structure, etc., and is particularly suitable for the technical field of water pump structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the side structure of the utility model's large-spacing transfer case water pump;

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model's large-spacing transfer case water pump Figure 1 ;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model's large-spacing transfer case water pump Figure 2 ;

[0028] Figure 5 for Figure 4 Enlarged view of point B in the middle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 a limitation on the present invention.

[0031] 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 one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Example:

[0033] like Figures 1 to 5 As shown, a large-spacing transfer case water pump comprises:

[0034] Pump body 1, transfer case 2 and pump shaft 3;

[0035] The pump body 1 is provided with an impeller assembly 11, the impeller assembly 11 is sleeved on the pump shaft 3, the pump body 1 is connected to the transfer case 2 by bolts, and the pump shaft 3 is penetrated in the pump body 1 and the transfer case 2;

[0036] The transfer case 2 is provided with an input shaft 21, an intermediate shaft 22, an output shaft 23 and a shift assembly 24. The input shaft 21, the intermediate shaft 22 and the output shaft 23 are arranged in parallel. The shift assembly 24 is arranged above the input shaft 21. The shift assembly 24 includes a shift fork 241 and a piston assembly 242. One end of the shift fork 241 is connected to the piston assembly 242, and the other end of the shift fork 241 is connected to the input shaft 21. An air pipe 25 is provided on the top of the transfer case 2. The piston assembly 242 is arranged in the air pipe 25. The piston assembly 242 moves in the air pipe 25 to drive the shift fork 241 to move synchronously, thereby respectively controlling the rotation of the pump shaft 3 and the output shaft 23.

[0037] Among them, the input shaft 21 is sleeved with a first driving gear 211 and a second driving gear 212, the first driving gear 211 and the second driving gear 212 are arranged opposite to each other, the first driving gear 211 and the second driving gear 212 can have different numbers of teeth and sizes to meet different transmission ratio requirements, a sliding bearing 213 is arranged between the first driving gear 211, the second driving gear 212 and the input shaft 21, the sliding bearing 213 is sleeved on the input shaft 21, the sliding bearing 213 has good self-lubricating performance and thermal stability, and when the input shaft 21 rotates at a high speed, the sliding bearing 213 can effectively reduce friction and wear, thereby improving the reliability and service life of the entire transmission system.

[0038] Furthermore, a spline sleeve 214 is provided between the first driving gear 211 and the second driving gear 212. The spline sleeve 214 is sleeved on the input shaft 21. The spline sleeve 214 is slidably provided on the input shaft 21. The openings at both ends of the spline sleeve 214 are respectively meshed with the first driving gear 211 and the second driving gear 212. The spline sleeve 214 is connected to the rear end of the shift fork 241. The movement of the shift fork 241 drives the spline sleeve 214 to move. The spline sleeve 214 plays the role of transmitting power and switching the transmission path. Through the connection with the shift fork 241, when the shift fork 241 moves, it can drive the spline sleeve 214 to move, thereby realizing the power transmission switching between different gears.

[0039] Furthermore, internal splines 2141 meshing with the first driving gear 211 and the second driving gear 212 are provided on the inner sides of the openings at both ends of the spline sleeve 214, and external splines 2111 corresponding to the internal splines 2141 are provided at the meshing positions of the first driving gear 211 and the second driving gear 212 with the spline sleeve 214. The spline meshing method can provide stable transmission, effectively transmit torque, and ensure that no relative sliding occurs between the gears and the spline sleeve 214 during operation.

[0040] It should be noted that the first driving gear 211 is meshed with the first driven gear 30 sleeved on the pump shaft 3 , and the input shaft 21 drives the first driven gear 30 to rotate through the first driving gear 211 , thereby driving the pump shaft 3 to rotate.

[0041] It should be further explained that the input shaft 21 is connected to the output shaft 23 through the intermediate shaft 22, the intermediate shaft 22 is sleeved with a transition gear 221, the output shaft 23 is sleeved with a second driven gear 231, the second driving gear 212 is meshed and connected with the transition gear 221 and the second driven gear 231, so that the input shaft 21 drives the output shaft 23 to rotate synchronously, the rotation directions of the input shaft 21 and the output shaft 23 are opposite, the rotation speed of the input shaft 21 is V1, and the rotation speed of the output shaft 23 is V2, satisfying the relationship: V1:V2=1.

[0042] In addition, a bearing 215 is provided between the input shaft 21 and the spline sleeve 214, and an anti-wear sheet 216 is provided between the bearing 215 and the sliding bearing 213. The anti-wear sheet 216 is sleeved on the input shaft 21, and the anti-wear sheet 216 is arranged in contact with the sliding bearing 213. The spline sleeve 214 slides back and forth along the length direction of the bearing 215. The setting of the bearing 215 reduces the friction when the input shaft 21 and the spline sleeve 214 rotate relative to each other, and improves the smoothness and efficiency of the rotation. The presence of the anti-wear sheet 216 further enhances the wear resistance, can effectively share and withstand the friction pressure, reduce the wear between components, and extend the service life. In the process of the spline sleeve 214 sliding back and forth along the length direction of the bearing 215, due to the synergistic effect of the bearing 215 and the anti-wear sheet 216, the sliding is smoother and more stable, and the occurrence of jamming and wear is reduced.

[0043] Furthermore, the piston assembly 242 is divided into a first piston 2421 and a second piston 2422. The first piston 2421 and the second piston 2422 are both arranged in the air pipe 25. The first piston 2421 and the second piston 2422 are arranged to be engaged with each other. A return spring 2423 is provided on the side of the first piston 2421 and the second piston 2422 close to the air inlet. A sealing ring 2424 is provided between the outer wall of the first piston 2421 and the second piston 2422 and the inner wall of the air pipe 25. The sealing ring 2424 can effectively prevent gas leakage between the first piston 2421, the second piston 2422 and the inner wall of the air pipe 25, thereby ensuring the stability of the air pressure and the normal operation of the system.

[0044] Furthermore, a first air inlet 251 and a second air inlet 252 are provided at both ends of the air pipe 25. The first air inlet 251 takes in air, pushing the first piston 2421 to move toward the second piston 2422, thereby driving the shift fork 241 to move. The shift fork 241 drives the spline sleeve 214 to move, and the spline sleeve 214 moves toward the second driving gear 212. The opening on one side of the spline sleeve 214 meshes with the second driving gear 212, thereby enabling the input shaft 21 to drive the output shaft 23 to rotate. Similarly, after the second air inlet 252 takes in air, the spline sleeve 214 meshes with the first driving gear 211, thereby enabling the input shaft 21 to drive the pump shaft 3 to rotate. The intake air pressure of the first air inlet 251 and the second air inlet 252 is 0.6-0.8MPa.

[0045] In addition, the impeller group 11 includes a first impeller 111 and a second impeller 112. The first impeller 111 and the second impeller 112 are arranged in parallel so that they can work together during operation to reduce liquid reflux and energy loss. The first impeller 111 and the second impeller 112 are both fixedly connected to the pump shaft 3. A guide vane 113 is also provided on the back of the first impeller 111, which can rectify and guide the liquid flowing out of the first impeller 111, further optimize the flow state of the liquid, and improve the overall efficiency of the pump.

[0046] Working process: When the equipment is started, the gas enters the air pipe 25 through the first air inlet 251 or the second air inlet 252. Assume that the gas first enters from the first air inlet 251, pushing the first piston 2421 to move toward the second piston 2422. The movement of the first piston 2421 drives the shift fork 241 to move, and the shift fork 241 then drives the spline sleeve 214 to slide along the input shaft 21, and the spline sleeve 214 moves toward the side of the second driving gear 212 until the opening on one side thereof engages with the second driving gear 212. At this time, the rotational power of the input shaft 21 is transmitted to the second driven gear 231 through the second driving gear 212 and the transition gear 221 in turn, thereby driving the output shaft 23 to rotate, so that the input shaft 21 drives the output shaft 23 to rotate synchronously. When the working mode needs to be switched, the gas enters from the second air inlet 252. Similarly, the piston assembly 242 is pushed to move. , driving the shift fork 241 and the spline sleeve 214 to move, so that the spline sleeve 214 is meshed with the first driving gear 211. In this way, the rotation of the input shaft 21 drives the first driven gear 30 to rotate through the first driving gear 211, thereby driving the pump shaft 3 to rotate. In the pump body 1, the rotation of the pump shaft 3 drives the first impeller 111 and the second impeller 112 in the impeller group 11 to rotate. The first impeller 111 and the second impeller 112 are arranged in parallel and work together to suck in the liquid and output it with boost pressure. The guide vane 113 on the back of the first impeller 111 rectifies and guides the outflowing liquid, optimizes the flow state of the liquid, and improves the working efficiency of the pump.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A large-spacing transfer case water pump, characterized in that: include: Pump body (1), transfer case (2) and pump shaft (3); An impeller assembly (11) is arranged in the pump body (1), the impeller assembly (11) is sleeved on the pump shaft (3), the pump body (1) and the transfer case (2) are connected by bolts, and the pump shaft (3) is inserted into the pump body (1) and the transfer case (2); The transfer case (2) is provided with an input shaft (21), an intermediate shaft (22), an output shaft (23) and a shift assembly (24); the input shaft (21), the intermediate shaft (22) and the output shaft (23) are arranged in parallel; the shift assembly (24) is arranged above the input shaft (21); the shift assembly (24) comprises a shift fork (241) and a piston assembly (242); one end of the shift fork (241) is connected to the piston assembly (242); the other end of the shift fork (241) is connected to the input shaft (21); an air pipe (25) is provided at the top of the transfer case (2); the piston assembly (242) is arranged in the air pipe (25); the piston assembly (242) moves in the air pipe (25) to drive the shift fork (241) to move synchronously, thereby respectively controlling the rotation of the pump shaft (3) and the output shaft (23).

2. A large-spacing transfer case water pump according to claim 1, characterized in that : A first driving gear (211) and a second driving gear (212) are sleeved on the input shaft (21); the first driving gear (211) and the second driving gear (212) are arranged opposite to each other; sliding bearings (213) are respectively arranged between the first driving gear (211) and the second driving gear (212) and the input shaft (21); the sliding bearings (213) are sleeved on the input shaft (21).

3. A large-spacing transfer case water pump according to claim 2, characterized in that : A spline sleeve (214) is provided between the first driving gear (211) and the second driving gear (212); the spline sleeve (214) is sleeved on the input shaft (21); the spline sleeve (214) is slidably provided on the input shaft (21); openings at both ends of the spline sleeve (214) are respectively meshed with the first driving gear (211) and the second driving gear (212); and the spline sleeve (214) is connected to the rear end of the shift fork (241).

4. A large-spacing transfer case water pump according to claim 3, characterized in that : Internal splines (2141) meshing with the first driving gear (211) and the second driving gear (212) are arranged on the inner sides of the openings at both ends of the spline sleeve (214); external splines (2111) corresponding to the internal splines (2141) are arranged at the meshing positions of the first driving gear (211) and the second driving gear (212) with the spline sleeve (214).

5. A large-spacing transfer case water pump according to claim 2, characterized in that : The first driving gear (211) is meshed with a first driven gear (30) sleeved on the pump shaft (3); the input shaft (21) drives the first driven gear (30) to rotate via the first driving gear (211), thereby driving the pump shaft (3) to rotate.

6. A large-spacing transfer case water pump according to claim 2, characterized in that : The input shaft (21) is connected to the output shaft (23) via the intermediate shaft (22); a transition gear (221) is sleeved on the intermediate shaft (22); a second driven gear (231) is sleeved on the output shaft (23); the second driving gear (212) is meshingly connected with the transition gear (221) and the second driven gear (231), so that the input shaft (21) drives the output shaft (23) to rotate synchronously.

7. A large-spacing transfer case water pump according to claim 2, characterized in that : A bearing (215) is arranged between the input shaft (21) and the spline sleeve (214), and an anti-wear sheet (216) is arranged between the bearing (215) and the sliding bearing (213). The anti-wear sheet (216) is sleeved on the input shaft (21), the anti-wear sheet (216) is arranged to abut against the sliding bearing (213), and the spline sleeve (214) slides back and forth along the length direction of the bearing (215).

8. The large-spacing transfer case water pump according to claim 1, characterized in that : The piston assembly (242) is divided into a first piston (2421) and a second piston (2422). The first piston (2421) and the second piston (2422) are both arranged in the air pipe (25). The first piston (2421) and the second piston (2422) are arranged to engage with each other. A return spring (2423) is arranged on the side of the first piston (2421) and the second piston (2422) close to the air inlet. A sealing ring (2424) is arranged between the outer wall of the first piston (2421) and the second piston (2422) and the inner wall of the air pipe (25).

9. A large-spacing transfer case water pump according to claim 1, characterized in that : The impeller assembly (11) comprises a first impeller (111) and a second impeller (112); the first impeller (111) and the second impeller (112) are arranged in parallel, and the first impeller (111) and the second impeller (112) are both fixedly connected to the pump shaft (3); and a guide vane (113) is further arranged on the back of the first impeller (111).

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