An abrasion-resistant and easy-to-maintain rear axle housing for agricultural vehicles and its usage method

Abstract

The present invention relates to the technical field of rear axles of agricultural vehicles, and more specifically, to a wear-resistant and easy-to-maintain agricultural vehicle rear axle box and a method for using the same. The rear axle housing, a sealing plate mechanism, a base and an inner buckle assembly are provided. First, the base cooperates with the inner buckle assembly and the sealing plate mechanism provided at the upper end to connect the base with the mounting opening at the bottom of the rear axle housing, thereby connecting the base to the rear axle housing. During the connection process, the sealing plate mechanism is extended to perform auxiliary sealing on the inner side of the mounting opening of the rear axle housing. The sealing can also assist in positioning and reduce the shaking of the base. At the same time, the more the driving screw in the inner buckle assembly rotates, the tighter the connection between the mounting block and the downwardly inclined inner buckle pin and the inner buckle groove. The connection is thus more secure, with one-step operation and two effects. At the same time, the heat dissipation assembly provided at the bottom of the base can conduct heat and dissipate heat to the base, the rear axle housing and the oil in the rear axle housing, thereby greatly improving the maintenance efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rear axles for agricultural vehicles, and more specifically to a wear-resistant and easy-to-maintain agricultural vehicle rear axle box and a use method thereof. Background Art

[0002] The rear axle refers to the rear drive shaft component of the vehicle's power transmission. It consists of two half-bridges and can implement half-bridge differential movement. At the same time, it is also a device used to support the wheels and connect the rear wheels. If it is a front-axle driven vehicle, the rear axle is just a trailing axle and only plays a role in bearing.

[0003] Most tractors are driven by diesel, and tractors can carry a lot of heavy objects, which leads to a large amount of energy transfer in the driving link. The rear axle housing has a lot of energy loss when transmitting power, resulting in a lot of heat. The parts at the rear axle housing are not easy to maintain and replace because the housing is relatively closed. For this reason, a new type of tractor rear axle housing has appeared on the market, which can quickly disassemble and replace the rear axle housing.

[0004] For example, application number CN202021918247.9 discloses a new type of tractor rear axle housing. The utility model has a first bearing seat at the rear axle outer shell for placing bearings, providing a stable foundation for the use of the power input shaft; and the first output shaft and the second output shaft on both sides are respectively limited by the second bearing seat and the support column for position limitation, providing safety guarantee for power output. At the same time, the setting of this structure facilitates the maintenance of the device.

[0005] However, the device does not provide a method for quick and convenient disassembly, resulting in inconvenience in disassembly. As a result, a long time is required during the maintenance and installation processes, resulting in reduced efficiency. In addition, the installation opening is at the top, and when the debris generated inside the rear axle housing during use needs to be cleaned, all internal parts must be removed. Due to the irregular shape of the interior of the rear axle housing, it is inconvenient to clean the debris, and the overall maintenance efficiency is reduced. In addition, the heat dissipation of the device is only carried out through the heat dissipation opening, and there are many gear parts inside the rear axle housing. Setting up the heat dissipation opening will inevitably cause dust to enter the interior, thus reducing the service life of the rear axle housing and the rear axle as a whole. Summary of the invention

[0006] The object of the present invention is to provide a rear axle box for an agricultural vehicle which is wear-resistant and easy to maintain, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a wear-resistant and easy-to-maintain rear axle box for an agricultural vehicle, comprising a rear axle housing, a mounting opening at the bottom of the rear axle housing, and a base connected to the outside of the mounting opening, wherein a mounting cavity is formed inside the rear axle housing, and an output shaft mounting hole is provided through the mounting cavity;

[0008] An inner buckle assembly is arranged on one side of the base close to the mounting opening, an inner buckle groove is arranged on the inner side of the mounting opening in the rear axle housing, and the inner buckle assembly can be plugged into the inner buckle groove;

[0009] A heat dissipation component for dissipating heat for the entire rear axle is disposed on the other side of the base away from the mounting opening, and the heat dissipation component is connected to the base via a fixing mechanism;

[0010] The inner buckle assembly includes a convex seat arranged above the base, a driving groove opened at the central axis position of the base and a driving screw installed in the driving groove. The convex seat is a ramp with a high inside and a low outside. Two sealing plate mechanisms are placed on both sides of the convex seat in cooperation with each other, and the two sealing plate mechanisms can be spliced ​​into a complete sealing plate and fit and seal with the inner wall of the installation opening;

[0011] Telescopic mechanisms are symmetrically arranged at both ends of the driving screw, and a single telescopic mechanism can be connected to a corresponding sealing plate mechanism. The upper end of a single sealing plate mechanism is connected to one end of a mounting block, and a downward-inclined inner buckle pin is connected to the outer side of the other end of the mounting block. The inner buckle pin can be sloped by rotating the driving screw and is connected to the inner buckle groove.

[0012] A further technical solution of the present application is as follows: the telescopic mechanism comprises an adjusting screw sleeve connected to the outside of the driving screw, and a telescopic seat installed on the outside of the adjusting screw sleeve, a telescopic cavity is formed inside the telescopic seat, one end of a pull-back spring is arranged at the bottom of the telescopic cavity, the other end of the pull-back spring is connected to one side of a limiting block, one end of a telescopic block is arranged on the other side of the limiting block, and the other end of the telescopic block is connected to the bottom of a single sealing plate mechanism, the driving screw comprises a first screw and a second screw, one end of the first screw and one end of the second screw are connected to each other, the other end of the second screw is connected to one end inside the driving groove, and the thread lengths of the outer sides of the first screw and the second screw are the same, and the thread directions are opposite, and the adjusting screw sleeve is threadedly connected to the first screw and the second screw;

[0013] The other end of the first screw is provided with a rotation groove for connecting to an external rotating device.

[0014] A further technical solution of the present application is that the number of the pull-back springs is several.

[0015] A further technical solution of the present application is: a single sealing plate mechanism includes an outer sealing plate, an inner sealing plate and a fixed sealing plate, the two ends of the fixed sealing plate are respectively connected to one end of the outer sealing plate and one end of the inner sealing plate, the two sealing plate mechanisms are arranged in coordination with each other and spliced ​​to form a complete sealing plate, and the inner side of the sealing plate is placed on a convex seat.

[0016] A further technical solution of the present application is that the inner side of the outer sealing plate and the outer side of the inner sealing plate are both provided with splicing grooves, and splicing sliders are correspondingly provided at the ends of both, and the splicing sliders on the same side are slidably connected to the splicing grooves to complete the extension.

[0017] A further technical solution of the present application: the heat dissipation assembly includes a bottom cavity provided at the bottom of the base, connecting grooves provided at both sides of the bottom cavity, a heat dissipation seat, and a fixing mechanism provided on a side of the heat dissipation seat away from the base, the fixing mechanism includes a mounting groove provided at the bottom surface of the heat dissipation seat, and sliding blocks symmetrically provided in the mounting groove, a tightening spring is connected between the sides of the two sliding blocks close to each other, the sides of the two sliding blocks away from each other are both connected to one end of a connecting plate extending to the outer side surface of the heat dissipation seat, and the other end of the connecting plate can be connected to the connecting grooves provided at both sides of the bottom cavity;

[0018] A heat dissipation strip is disposed on the other side of the heat dissipation seat, and the heat dissipation strip can fit in the interior of the bottom cavity.

[0019] A further technical solution of the present application is that the number of the fixing mechanism, the heat dissipation strips and the clamping springs is several.

[0020] A further technical solution of the present application is as follows: a receiving groove is formed on the base at the center of the convex seat, and a receiving box for receiving debris inside the rear axle housing is provided in the receiving groove.

[0021] A further technical solution of the present application is that positioning rings are formed on both sides of the output shaft mounting hole, and a plurality of positioning grooves for positioning the output shaft are formed on the inner side wall of the positioning ring;

[0022] A support plate is also arranged inside the installation cavity.

[0023] A method for using a rear axle box body of a wear-resistant and easy-to-maintain agricultural vehicle, the method comprising the following steps:

[0024] Step 1: When in use, the rear axle drive parts need to be installed inside the installation cavity, and the rear axle drive shaft is connected to the output shaft installation hole. Both sides of the rear axle drive shaft can be connected to the positioning ring and spliced ​​with the positioning groove to achieve the installation of the rear axle drive shaft. After the rear axle drive parts are installed, they can be connected to the outside of the installation port through the base to seal the rear axle housing;

[0025] The second step is to connect the two sealing plates to the base, and the two sealing plates are in a state of being close to each other before the two sealing plates are connected. At this time, the mounting block and the inner buckle pin are in a position on the convex seat close to the receiving groove. The inner sealing plates and the outer sealing plates on both sides of the sealing plate mechanism are in a retracted state. When the rear axle housing is placed on the base, the first screw and the second screw inside the screw can be driven to rotate by rotating the driving screw. At the same time, the adjusting screw sleeve inside the telescopic mechanism will rotate accordingly. Since the telescopic seat and the telescopic block at the upper end of the adjusting screw sleeve are connected to the fixed sealing plate, the rotation of the adjusting screw sleeve is restricted. Moreover, since the threads on the outer sides of the first screw and the second screw are in opposite directions, the telescopic mechanisms and the telescopic seat connected to them will be driven to move in opposite directions, and the sealing plate mechanism will be telescoped.

[0026] Step 3, then, the inner sealing plate and the outer sealing plate inside the two sealing plate mechanisms move away from each other, and at the same time, the fixed sealing plate moves away from each other, and at this time, the return spring inside the telescopic mechanism pulls back the telescopic block, driving the fixed sealing plates connected to each other to fit the slope of the convex seat to move downward at the same time, and the inner buckle pin moves downward at the same time, and is connected to the oblique opening inner buckle groove on the inner side of the rear axle housing to achieve the connection between the base and the rear axle housing, and at this time, the outer sealing plate, the inner sealing plate and the fixed sealing plate fit the inner side of the rear axle housing installation port, so that the base is connected and sealed at the same time;

[0027] Step 4. Finally, the heat dissipation component arranged at the bottom of the base dissipates heat for the base and the rear axle housing, and the receiving box can collect debris generated during the operation of the rear axle parts in the rear axle housing. During subsequent maintenance, you only need to dismantle the base as a whole, take out the receiving box, and clean up the debris. To disassemble the base, you only need to turn the drive screw.

[0028] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0029] The present invention provides a rear axle housing, a sealing plate mechanism, a base and an inner buckle assembly. First, the base cooperates with the inner buckle assembly and the sealing plate mechanism provided at the upper end to connect the base with the mounting opening at the bottom of the rear axle housing, thereby connecting the base to the rear axle housing. During the connection process, the sealing plate mechanism is extended to assist in sealing the inner side of the mounting opening of the rear axle housing. The sealing can also assist in positioning and reduce the shaking of the base. At the same time, the more the driving screw in the inner buckle assembly rotates, the tighter the connection between the mounting block and the downwardly inclined inner buckle pin and the inner buckle groove. Thus, the connection is more secure, with one-step operation and two effects. At the same time, the heat dissipation assembly provided at the bottom of the base can conduct heat and dissipate heat to the base, the rear axle housing and the oil in the rear axle housing, and maintain sealing. At the same time, the heat dissipation effect is better, thereby greatly improving the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1A schematic diagram of the overall structure of a rear axle box of a wear-resistant and easy-to-maintain agricultural vehicle provided by the present invention;

[0031] Figure 2 A schematic structural diagram of a heat dissipation assembly for a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention;

[0032] Figure 3 A schematic structural diagram of a support plate of a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention;

[0033] Figure 4 A schematic structural diagram of an inner buckle assembly of a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention;

[0034] Figure 5 A schematic structural diagram of a mounting block and an inner buckle pin of a rear axle box of a wear-resistant and easy-to-maintain agricultural vehicle provided by the present invention;

[0035] Figure 6 A schematic structural diagram of a convex seat and a receiving groove of a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention;

[0036] Figure 7 A schematic diagram of the structure of a receiving box of a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention;

[0037] Figure 8 A schematic structural diagram of a side view of a base of a rear axle box of a wear-resistant and easy-to-maintain agricultural vehicle provided by the present invention;

[0038] Fig. 9 For the present invention Figure 8 Enlarged view of point A in the middle;

[0039] Fig.10 A structural schematic diagram of a telescopic mechanism of a rear axle box of an agricultural vehicle that is wear-resistant and easy to maintain provided by the present invention.

[0040] Explanation of the symbols in the schematic diagram:

[0041] 1. Rear axle housing; 101. Output shaft mounting hole; 102. Positioning ring; 103. Positioning groove; 104. Support plate;

[0042] 2. Base; 201. Bottom cavity; 202. Connecting groove; 203. Heat sink; 204. Heat sink strip; 205. Sliding block; 206. Pressing spring; 207. Mounting groove; 208. Connecting plate; 209. Inner buckle groove; 210. First screw; 211. Second screw; 212. Splicing groove; 213. Outer sealing plate; 214. Inner sealing plate; 215. Splicing slider; 216. Fixed sealing plate; 217. Boss; 218. Mounting block; 219. Inner buckle pin; 220. Receiver groove; 221. Receiver box; 222. Rotating groove; 223. Limiting block; 224. Telescopic block; 225. Telescopic seat; 226. Adjusting screw sleeve; 227. Pull-back spring; 228. Telescopic cavity. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. The present invention is further described below in combination with the embodiments.

[0044] See also Figures 1 to 10 In one embodiment of the present application, a rear axle housing for an agricultural vehicle that is wear-resistant and easy to maintain includes a rear axle housing 1, a mounting opening at the bottom of the rear axle housing 1, and a base 2 connected to the outside of the mounting opening, characterized in that: a mounting cavity is formed inside the rear axle housing 1, and an output shaft mounting hole 101 is provided through the mounting cavity;

[0045] An inner buckle assembly is disposed on one side of the base 2 close to the mounting opening, and an inner buckle groove 209 is disposed on the inner side of the mounting opening in the rear axle housing 1, and the inner buckle assembly can be plugged into the inner buckle groove 209;

[0046] A heat dissipation component for dissipating heat for the entire rear axle is disposed on the other side of the base 2 away from the mounting opening, and the heat dissipation component is connected to the base 2 via a fixing mechanism;

[0047] The inner buckle assembly includes a convex seat 217 arranged above the base 2, a driving groove opened at the central axis position of the base 2 and a driving screw installed in the driving groove. The convex seat 217 is a ramp with a high inside and a low outside. Two sealing plate mechanisms are placed on both sides of the convex seat 217 in a mirror-symmetrical manner, and the two sealing plate mechanisms can be spliced ​​into a complete sealing plate and fit and seal with the inner wall of the installation opening;

[0048] Telescopic mechanisms are symmetrically arranged at both ends of the driving screw, and a single telescopic mechanism can be connected to the corresponding sealing mechanism. The upper end of a single sealing mechanism is connected to one end of a mounting block 218, and a downward-inclined inner buckle pin 219 is connected to the outer side of the other end of the mounting block 218. The inner buckle pin 219 can be sloped by rotating the driving screw and is connected to the inner buckle groove 209.

[0049] This embodiment is implemented as follows: the inner buckle assembly works to connect the base 2 and the rear axle housing 1 from the inside by inner buckling, and the sealing plate mechanism fits the inner high and outer low slope of the convex seat 217 to translate and move downward at the same time, so as to achieve the connection between the inner buckle pin 219 and the inner buckle groove 209, and achieve the effect of the tighter the connection, the tighter the connection, and at the same time achieve the inner side of the installation port to improve the sealing effect. After the connection, the upper end surface of the base 2 located on the outer periphery of the convex seat 217 will fit on the lower end plane of the rear axle housing 1, so as to achieve the tightening and sealing on both sides, and the upper end surface of the base 2 located on the outer periphery of the convex seat 217 can also be provided with a sealing part, such as a rubber gasket for auxiliary sealing, so as to achieve better sealing and tightening effects.

[0050] See also Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As a preferred embodiment of the present application, the telescopic mechanism includes an adjusting screw sleeve 226 connected to the outside of the driving screw, and a telescopic seat 225 installed on the outside of the adjusting screw sleeve 226, a telescopic cavity 228 is formed inside the telescopic seat 225, and one end of a pull-back spring 227 is arranged at the bottom of the telescopic cavity 228, and the other end of the pull-back spring 227 is connected to one side of the limit block 223, and one end of the telescopic block 224 is arranged on the other side of the limit block 223, and the other end of the telescopic block 224 is connected to the bottom of the single sealing mechanism, the driving screw includes a first screw rod 210 and a second screw rod 211, one end of the first screw rod 210 and one end of the second screw rod 211 are connected to each other, and the other end of the second screw rod 211 is connected to one end inside the driving groove, and the thread lengths of the outer sides of the first screw rod 210 and the second screw rod 211 are the same, and the thread directions are opposite, and the adjusting screw sleeve 226 is threadedly connected to the first screw rod 210 and the second screw rod 211;

[0051] The other end of the first screw rod 210 is provided with a rotation groove 222 for connecting to an external rotation device;

[0052] Further, the number of the pull-back springs 227 is several;

[0053] Further, a single sealing plate mechanism includes an outer sealing plate 213, an inner sealing plate 214 and a fixed sealing plate 216, and two ends of the fixed sealing plate 216 are respectively connected to one end of the outer sealing plate 213 and one end of the inner sealing plate 214, and the two sealing plate mechanisms are arranged and spliced ​​with each other to form a complete sealing plate, and the inner side of the sealing plate can be placed on the convex seat 217;

[0054] Furthermore, a splicing groove 212 is provided on the inner side of the outer sealing plate 213 and the outer side of the inner sealing plate 214, and a splicing slider 215 is provided at the ends of both, and the splicing slider 215 on the same side is slidably connected to the splicing groove 212 to complete the extension.

[0055] This embodiment is implemented as follows: before connecting the base 2, the two sealing plate mechanisms are in a state of being close to each other, at this time, the mounting block 218 and the inner buckle pin 219 are located on the convex seat 217 near the receiving groove 220, wherein the inner sealing plate 214 and the outer sealing plate 213 on both sides of the sealing plate mechanism are in a retracted state, and when the rear axle housing 1 is placed on the base 2, the first screw 210 and the second screw 211 inside the driving screw can be driven by rotating the driving screw, and at the same time, the adjusting screw sleeve 226 inside the telescopic mechanism will rotate along with it, because the telescopic seat 225 and the telescopic block 224 at the upper end of the adjusting screw sleeve 226 are connected to the fixed sealing plate 216, the rotation of the adjusting screw sleeve 226 is restricted, and because both the first screw 210 and the second screw 211 The threads on the outside are in opposite directions, which will drive the telescopic mechanisms and telescopic seats 225 connected to them to move in opposite directions, and the sealing plate mechanism will be extended. At the same time, the fixed sealing plate 216 will follow the movement. During the movement, the telescopic mechanism will work, and the return spring 227 inside the telescopic mechanism will pull back the telescopic block 224, driving the fixed sealing plates 216 connected to them to move in accordance with the slope of the convex seat 217 while moving downward. The inner buckle pin 219 moves downward at the same time and is connected to the obliquely opened inner buckle groove 209 on the inner side of the rear axle housing 1, thereby connecting the base 2 with the rear axle housing 1. At the same time, the splicing slider 215 arranged on the inner side of the outer sealing plate 213 and the outer side of the inner sealing plate 214 slides in the splicing groove 212 to extend and fit the inner side of the opening of the rear axle housing 1.

[0056] See also Figure 1 , Figure 2 , Figure 3 and Figure 5As a preferred embodiment of the present application, the heat dissipation assembly includes a bottom cavity 201 opened at the bottom of the base 2, connecting grooves 202 opened on both sides of the bottom cavity 201, a heat sink 203, and a fixing mechanism arranged on a side of the heat sink 203 away from the base 2, the fixing mechanism includes a mounting groove 207 opened on the bottom surface of the heat sink 203, and sliding blocks 205 symmetrically arranged in the mounting groove 207, a tightening spring 206 is connected between the sides of the two sliding blocks 205 close to each other, and the sides of the two sliding blocks 205 away from each other are both connected to one end of a connecting plate 208 extending to the outer side of the heat sink 203, and the other end of the connecting plate 208 can be connected to the connecting grooves 202 opened on both sides of the bottom cavity 201;

[0057] A heat dissipation bar 204 is disposed on the other side of the heat dissipation seat 203 , and the heat dissipation bar 204 can fit in with the inside of the bottom cavity 201 .

[0058] Furthermore, the number of the fixing mechanism, the heat dissipation strip 204 and the pressing spring 206 is multiple.

[0059] Furthermore, a receiving groove 220 is formed on the base 2 at the center of the protruding seat 217 , and a receiving box 221 for receiving debris inside the rear axle housing 1 is arranged in the receiving groove 220 .

[0060] This embodiment is implemented as follows: the receiving box 221 is in the receiving groove 220. After the base 2 is connected, the receiving box 221 will be inside the rear axle housing 1. At this time, the oil and parts inside the rear axle housing 1 will fill the inside. Similarly, the oil will enter or settle in the receiving box 221. The debris generated during the working process will also enter the receiving box 221 and settle. In this way, the debris is collected, and the receiving box 221 will contact the oil, conduct heat, and transfer heat to the base 2 and the heat sink 203. The heat on the heat sink 203 The strips 204 are used to dissipate temperature, thereby improving the heat dissipation effect and reducing the number of maintenance times. The heat sink 203 shell is connected to the base 2 through a fixing mechanism. During the connection process, the tightening springs 206 can be pushed out to both sides, pushing the sliding blocks 205 and the connecting plates 208 out to connect with the connecting grooves 202 on both sides of the bottom cavity 201, and thus fixing them. When disassembling, slide the two sliding blocks 205, contract the tightening springs 206, and pull out the connecting plates 208, thereby achieving quick disassembly. At the same time, multiple heat dissipation strips 204 will increase the heat dissipation contact area and improve the heat dissipation effect.

[0061] See also Figure 1 , Figure 2 and Figure 3 In this embodiment, positioning rings 102 are formed on both sides of the output shaft mounting hole 101, and the inner wall of the positioning ring 102 is provided with a plurality of positioning grooves 103 for positioning the output shaft;

[0062] A support plate 104 is also disposed inside the installation cavity.

[0063] In actual application, the rear axle drive parts need to be installed inside the installation cavity, and the rear axle drive shaft is connected to the output shaft mounting hole 101. The two sides of the rear axle drive shaft can be connected to the positioning ring 102 and spliced ​​with the positioning groove 103 to realize the installation of the rear axle drive shaft, reduce the shaking of the rear axle drive shaft, and increase the service life.

[0064] See also Figure 1 - Fig. 9 The present invention provides a method for using a wear-resistant and easy-to-maintain agricultural vehicle rear axle box, the method comprising the following steps:

[0065] Step 1: When in use, the rear axle drive parts need to be installed inside the installation cavity, and the rear axle drive shaft is connected to the output shaft installation hole 101. Both sides of the rear axle drive shaft can be connected to the positioning ring 102 and spliced ​​with the positioning groove 103 to achieve the installation of the rear axle drive shaft. After the rear axle drive parts are installed, they can be connected to the outside of the installation port through the base 2 to seal the rear axle housing 1;

[0066] Step 2, before connecting the base 2, the two sealing plate mechanisms should be in a state of being close to each other, at this time, the mounting block 218 and the inner buckle pin 219 are in a position on the convex seat 217 close to the receiving groove 220, wherein the inner sealing plate 214 and the outer sealing plate 213 on both sides of the sealing plate mechanism are in a retracted state, and when the rear axle housing 1 is placed on the base 2, the first screw 210 and the second screw 211 inside the driving screw can be driven to rotate by rotating the driving screw, and at the same time, the adjusting screw sleeve 226 inside the telescopic mechanism will rotate along with it, because the telescopic seat 225 and the telescopic block 224 at the upper end of the adjusting screw sleeve 226 are connected to the fixed sealing plate 216, the rotation of the adjusting screw sleeve 226 is restricted, and because the threads on the outer sides of the first screw 210 and the second screw 211 are in opposite directions, the telescopic mechanisms and the telescopic seat 225 connected to each other will be driven to move in opposite directions, so that the sealing plate mechanism can be telescoped;

[0067] Step 3, then, the inner sealing plate 214 and the outer sealing plate 213 inside the two sealing plate mechanisms move away from each other, and at the same time, the fixed sealing plate 216 moves away from each other, and at this time, the return spring 227 inside the telescopic mechanism will pull back the telescopic block 224, driving the fixed sealing plates 216 connected to each other to fit the slope of the convex seat 217 and move downward at the same time, and the inner buckle pin 219 moves downward at the same time and connects with the oblique opening inner buckle groove 209 on the inner side of the rear axle housing 1, so as to realize the connection between the base 2 and the rear axle housing 1, and at this time, the outer sealing plate 213, the inner sealing plate 214 and the fixed sealing plate 216 fit with the inner side of the installation port of the rear axle housing 1, so as to realize the connection of the base 2 and seal at the same time;

[0068] Step 4. Finally, the heat dissipation component arranged at the bottom of the base 2 dissipates heat for the base 2 and the rear axle housing 1, and the receiving box 221 can collect debris generated during the operation of the rear axle parts in the rear axle housing 1. During subsequent maintenance, it is only necessary to dismantle the base 2 as a whole, take out the receiving box 221, and clean up the debris. To disassemble the base 2, it is only necessary to turn the drive screw.

[0069] In summary, the present invention provides a rear axle housing, a sealing plate mechanism, a base and an inner buckle assembly. First, the base cooperates with the inner buckle assembly and the sealing plate mechanism provided on the upper end to connect the base with the mounting opening at the bottom of the rear axle housing, thereby connecting the base to the rear axle housing. During the connection process, the sealing plate mechanism is extended to assist in sealing the inner side of the mounting opening of the rear axle housing. The sealing can also assist in positioning and reduce the shaking of the base. At the same time, the more the driving screw in the inner buckle assembly rotates, the tighter the connection between the mounting block and the downwardly inclined inner buckle pin and the inner buckle groove is, thereby achieving a more stable connection. One-step operation and two effects. At the same time, the heat dissipation assembly provided at the bottom of the base can conduct heat and dissipate heat to the base, the rear axle housing and the oil in the rear axle housing, and maintain sealing. At the same time, the heat dissipation effect is better, thereby greatly improving the maintenance efficiency.

[0070] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

[0071] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wear-resistant and easy-to-maintain rear axle housing for an agricultural vehicle, comprising a rear axle housing, a mounting opening at the bottom of the rear axle housing, and a base connected to the outside of the mounting opening, characterized in that: A mounting cavity is formed inside the rear axle housing, and an output shaft mounting hole is provided through the mounting cavity; An inner buckle assembly is arranged on one side of the base close to the installation opening, an inner buckle groove is arranged on the inner side of the installation opening in the rear axle housing, and the inner buckle assembly is plugged into the inner buckle groove; A heat dissipation component for dissipating heat for the entire rear axle is provided on the other side of the base away from the mounting opening, and the heat dissipation component is connected to the base through a fixing mechanism; The inner buckle assembly includes a convex seat arranged above the base, a driving groove opened at the central axis position of the base and a driving screw installed in the driving groove. The convex seat is a ramp with a high inside and a low outside. Two sealing plate mechanisms are placed on both sides of the convex seat in cooperation with each other, and the two sealing plate mechanisms are spliced ​​into a complete sealing plate, and are sealed with the inner wall of the installation opening; Telescopic mechanisms are symmetrically arranged at both ends of the driving screw, and a single telescopic mechanism is connected to a corresponding sealing plate mechanism. The upper end of each sealing plate mechanism is connected to one end of a mounting block, and a downwardly inclined inner buckle pin is connected to the outer side of the other end of the mounting block, and the inner buckle pin is inclined by rotating the driving screw and is connected to the inner buckle groove; The telescopic mechanism includes an adjusting screw sleeve connected to the outside of a driving screw rod, and a telescopic seat installed on the outside of the adjusting screw sleeve, a telescopic cavity is formed inside the telescopic seat, one end of a pull-back spring is arranged at the bottom of the telescopic cavity, the other end of the pull-back spring is connected to one side of a limit block, one end of a telescopic block is arranged on the other side of the limit block, and the other end of the telescopic block is connected to the bottom of a single sealing plate mechanism, the driving screw rod includes a first screw rod and a second screw rod, one end of the first screw rod and one end of the second screw rod are connected to each other, the other end of the second screw rod is connected to one end inside the driving groove, and the thread lengths of the first screw rod and the second screw rod are the same, and the thread directions are opposite, and the adjusting screw sleeve is threadedly connected to the first screw rod and the second screw rod; The other end of the first screw is provided with a rotation groove for connecting to an external rotating device; The single sealing plate mechanism comprises an outer sealing plate, an inner sealing plate and a fixed sealing plate, and two ends of the fixed sealing plate are respectively connected to one end of the outer sealing plate and one end of the inner sealing plate.

2. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 1, characterized in that: The number of the pull-back springs (227) is several.

3. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 1, characterized in that: The two sealing plate mechanisms are arranged in cooperation with each other and spliced ​​to form a complete sealing plate, and the inner side of the sealing plate is placed on the convex seat (217).

4. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 3, characterized in that: The inner side of the outer sealing plate (213) and the outer side of the inner sealing plate (214) are both provided with splicing grooves (212), and splicing sliders (215) are correspondingly provided at the ends of both, and the splicing sliders (215) on the same side are slidably connected to the splicing grooves (212) to complete the extension.

5. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 1, characterized in that: The heat dissipation component comprises a bottom cavity (201) provided at the bottom of the base (2), connection grooves (202) provided at both sides of the bottom cavity (201), a heat dissipation seat (203), and a fixing mechanism provided on a side of the heat dissipation seat (203) away from the base (2), the fixing mechanism comprising a mounting groove (207) provided at the bottom surface of the heat dissipation seat (203), and sliding blocks (205) symmetrically provided in the mounting groove (207), a tightening spring (206) being connected between the mutually approaching sides of the two sliding blocks (205), and the mutually distant sides of the two sliding blocks (205) being connected to one end of a connecting plate (208) extending to the outer side surface of the heat dissipation seat (203), and the other end of the connecting plate (208) being connected to the connection grooves (202) provided at both sides of the bottom cavity (201); A heat dissipation bar (204) is provided on the other side of the heat dissipation seat (203), and the heat dissipation bar (204) is in contact with the inside of the bottom cavity (201).

6. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 5, characterized in that: The fixing mechanism, the heat dissipation strip (204) and the pressing spring (206) are all present in a plurality.

7. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 3, characterized in that: A receiving groove (220) is formed on the base (2) at the center of the convex seat (217), and a receiving box (221) for receiving debris inside the rear axle housing (1) is arranged in the receiving groove (220).

8. The wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to claim 1, characterized in that: A positioning ring (102) is formed on both sides of the output shaft mounting hole (101), and a plurality of positioning grooves (103) for positioning the output shaft are formed on the inner wall of the positioning ring (102); A support plate (104) is also provided inside the installation cavity.

9. A method for using a wear-resistant and easy-to-maintain agricultural vehicle rear axle box according to any one of claims 1 to 8, characterized in that: The method of use comprises the following steps: Step 1: When in use, the rear axle drive parts need to be installed inside the installation cavity, and the rear axle drive shaft is connected to the output shaft installation hole (101). Both sides of the rear axle drive shaft are connected to the positioning ring (102) and spliced ​​with the positioning groove (103) to achieve the installation of the rear axle drive shaft. After the rear axle drive parts are installed, they are connected to the outside of the installation port through the base (2) to seal the rear axle housing (1); Step 2: Before connecting the base (2), the two sealing plate mechanisms are in a state of being close to each other, at which time the mounting block (218) and the inner buckle pin (219) are located on the convex seat (217) near the receiving groove (220), wherein the inner sealing plate (214) and the outer sealing plate (213) on both sides of the sealing plate mechanism are in a retracted state, and when the rear axle housing (1) is placed on the base (2), the first screw (210) and the second screw (211) inside the driving screw are driven to rotate by rotating the driving screw. At the same time, the adjusting screw sleeve (226) inside the telescopic mechanism will rotate accordingly. Since the telescopic seat (225) and the telescopic block (224) at the upper end of the adjusting screw sleeve (226) are connected to the fixed sealing plate (216), the rotation of the adjusting screw sleeve (226) is restricted. Moreover, since the threads on the outer sides of the first screw rod (210) and the second screw rod (211) are in opposite directions, the telescopic mechanisms and the telescopic seat (225) connected to them will be driven to move in opposite directions, and the sealing plate mechanism can be telescoped. Step 3, then, the inner sealing plate (214) and the outer sealing plate (213) inside the two sealing plate mechanisms move away from each other, and at the same time, the fixed sealing plate (216) moves away from each other, and at this time, the return spring (227) inside the telescopic mechanism will pull back the telescopic block (224), driving the fixed sealing plates (216) connected to each other to fit the slope of the convex seat (217) and move downward at the same time, and the inner buckle pin (219) moves downward at the same time and is connected to the oblique opening inner buckle groove (209) on the inner side of the rear axle housing (1), thereby realizing the connection between the base (2) and the rear axle housing (1), and at this time, the outer sealing plate (213), the inner sealing plate (214) and the fixed sealing plate (216) fit the inner side of the installation port of the rear axle housing (1), so that the base (2) is connected and sealed at the same time; Step 4. Finally, the heat dissipation component arranged at the bottom of the base (2) dissipates heat for the base (2) and the rear axle housing (1), and the receiving box (221) collects debris generated during the operation of the rear axle parts in the rear axle housing (1). During subsequent maintenance, it is only necessary to dismantle the base (2) as a whole and take out the receiving box (221) to clean up the debris. The base (2) can be disassembled by simply rotating the drive screw.

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