CN209813950U - Novel tractor braking system assembly - Google Patents

Abstract

The utility model provides a novel tractor braking system assembly, include the end transmission casing with rear axle housing body coupling, the one end that rear axle casing was kept away from to the end transmission casing is equipped with the dish subassembly of stopping, and the dish subassembly of stopping includes at least a set of brake subassembly and brake disc, and the brake disc is installed on the brake hub, the wheel hub steel ring of another termination wheel of brake hub. The utility model discloses stop traditional drum and change into the better dish of brake effect and stop, redesign tractor end drive casing, the subassembly is stopped to better installation dish, the brake disc that the dish was stopped utilizes the brake spindle nose and the vehicle wheel hub steel ring of brand-new design to be connected, better brake performance has when guaranteeing intensity, set up special big axle and the planet wheel carrier connection structure of pulling, under the condition of not dismantling end drive casing from the rear axle casing, can relax will pull the axle greatly and dismantle, the bearing end face of pulling the axle greatly sets up adjusting nut, can be comparatively simple adjust the clearance between two bearings, convenient maintenance, and long service life is prolonged.

Description

Novel tractor braking system assembly

Technical Field

The utility model relates to a large-scale heavy vehicle brake technical field especially relates to a tractor braking system, specifically indicates a novel tractor braking system assembly.

Background

At present, the common braking modes include disk brake, drum brake and air brake, and a plurality of old vehicles are front disks and rear drums.

At present, a plurality of trolleys adopt front and rear disc brakes, and because the heat dissipation of the disc brake is better than that of a drum brake, the heat fading is not easy to generate in a high-speed braking state, and the high-speed braking effect is good. However, for many reasons, such as price and low-speed braking, drum brakes are still used in trucks, buses, tractors, etc. which require large braking force.

At present, the traditional drum brake is adopted by the commercial tractors, as shown in figure 1, the work of the tractor is far away from that the brake component arranged in a rear axle and a tail end transmission shell brakes a planet wheel driving shaft, namely a commonly-called small pulling shaft, the brake component utilizes lubricating oil in the rear axle shell to carry out a cold area, but in the walking process of the tractor with larger load, the heat generated by continuous braking can not be well dissipated, the temperature is overhigh, the heat fading phenomenon is easy to generate, and the braking effect is poor.

In addition, a driving shaft for driving wheels to rotate on the existing tractor is commonly called as a 'large pull shaft' and a planet wheel transmission support and is connected with a screw inside a rear axle through a screw installed in a tail end transmission shell, as shown in fig. 2, the large pull shaft and the planet wheel support are locked by the screw in advance before the tail end transmission shell is installed, when the large pull shaft needs to be disassembled for maintenance, the tail end transmission shell needs to be disassembled from the rear axle shell, the large pull shaft can be disassembled, the maintenance is troublesome, the maintenance is inconvenient, when small problems occur, the maintenance cost and the maintenance man-hour are considered, the maintenance is usually selected to be not carried out, and the large maintenance is carried out under the condition that the normal work cannot be carried out, at the moment, a great number of mechanical parts are seriously damaged, and the maintenance cost is increased.

The inside two sets of bearings that are equipped with of heavy spanner axle, through market research, the tractor is after long-time the use, and the clearance between the bearing can the grow, influences the transmission efficiency, and the symptom that shows is the abnormal sound, because adjust the clearance and need dismantle heavy spanner axle, consider loaded down with trivial details, man-hour of maintenance, also take the mode of not maintaining under the many situations, wait to carry out the overhaul when equipment can not normally use.

Disclosure of Invention

The to-be-solved technical problem of the utility model is weak point to prior art exists, a novel tractor braking system assembly is provided, this brake assembly is stopped traditional drum and is changed into the better dish of brake effect and stop, in order to stop the system reasonable installation on the tractor with the dish, redesign tractor end-to-end transmission casing, the subassembly is stopped to better installation dish, the brake disc that the dish was stopped utilizes the brake spindle nose and the vehicle wheel hub steel ring of brand-new design to be connected, better brake performance has when intensity is guaranteed, utilize the easy heat dissipation and the radiating advantage of wind-force of dish brake, traditional oil cooling device has been saved, under high-speed brake state, be difficult to produce the heat decline, high-speed braking effect is good.

In addition, set up special big spanner axle and planet wheel carrier connection structure, under the condition of not dismantling terminal transmission casing from the rear axle casing, can be light dismantle big spanner axle, set up adjusting nut at the bearing terminal surface of big spanner axle, clearance between two bearings of regulation that can be comparatively simple, convenient maintenance improves life.

The technical solution of the utility model is that, a following novel tractor braking system assembly is provided, include the end transmission casing with rear-axle housing body coupling, the one end that rear-axle housing was kept away from to the end transmission casing is equipped with the dish subassembly of stopping, the dish subassembly of stopping includes at least a set of brake subassembly and brake disc, the brake disc is installed on the brake shaft head, the wheel hub steel ring of another termination wheel of brake shaft head.

Preferably, the brake spindle head is a cylindrical revolving body structure with large outer diameter sizes at two ends and small outer diameter size in the middle, and the brake spindle head is respectively connected with a brake disc and a wheel hub steel ring of a wheel through flange plates arranged at two ends of the brake spindle head.

Preferably, a large pulling shaft is installed in the tail end transmission shell, one end of the large pulling shaft close to the rear axle shell is connected with the planetary gear carrier, one end of the large pulling shaft far away from the rear axle shell extends to the outside of the tail end transmission shell, and the end part of the large pulling shaft is connected with the wheel hub.

Preferably, the large spanner shaft is connected with the planet carrier through a pin shaft, the tail end transmission shell is provided with two operation holes which can remove the pin shaft from the large spanner shaft and the planet carrier, and the operation holes are provided with sealing covers.

Preferably, the operating holes are two, and opposite sides of the operating holes are arranged on the tail end transmission shell.

Preferably, the part of the large wrench shaft located in the terminal transmission shell is sleeved with two sets of thrust bearings, a thrust bearing end face away from the rear axle shell is provided with a gap adjusting device, the gap adjusting device is an adjusting nut arranged on the thrust bearing end face, an external thread is arranged at the position where the nut is assembled on the large wrench shaft in a rotating mode, one side, away from the thrust bearing, of the adjusting nut is further provided with a limiting clip for limiting rotation of the adjusting nut, a limiting component is arranged between the limiting clip and the adjusting nut, the limiting component is a limiting hole arranged on the limiting clip, a limiting bulge arranged on the adjusting nut or a limiting threaded hole arranged on the limiting nut, a limiting screw arranged between the limiting hole and the limiting nut hole, and one side, away from the adjusting nut, of the limiting clip is further provided with a locking nut.

Preferably, the subassembly of stopping is two sets of, the subassembly offside setting of braking is kept away from the tip of rear-axle housing one side at terminal transmission housing.

Preferably, one end of the tail end transmission shell, which is far away from the rear axle shell, is provided with an oil seal assembly which is sleeved on the large wrench shaft and is used for sealing a gap between the large wrench shaft and the tail end transmission shell, the end part of the tail end transmission shell is also provided with an oil seal cover which is sleeved on the large wrench shaft, and the oil seal cover is fixed on the end surface of the tail end transmission shell through a screw.

As preferred, the shaft hole at brake spindle nose center is the bell mouth, and the shaft hole size that closes on brake subassembly one end is less than the shaft hole of keeping away from brake subassembly one end, be equipped with the toper connecting piece between the central shaft hole of brake spindle nose and the big axle of pulling, the toper link suit is on pulling the axle greatly, the one end that the brake subassembly was kept away from to the toper connecting piece is equipped with the boss that is used for connecting the brake spindle nose to be connected through screw and brake spindle nose.

Preferably, the conical connecting piece is in key connection or linear tooth connection with the large spanner shaft, the inner ring of the thrust bearing is installed on the large spanner shaft, and the outer ring of the thrust bearing is installed inside the tail end transmission shell.

The beneficial effects of the technical scheme are as follows: this technical scheme has three utility model innovation point, first is that the brake is external, it stops to change into the better dish of brake effect to stop traditional drum, in order to stop the rational installation of system on the tractor with the dish, redesign tractor end-drive casing, the subassembly is stopped to better installation dish, the brake disc that the dish was stopped utilizes the brake spindle nose and the vehicle wheel hub steel ring of brand-new design to be connected, better brake performance has when the proof strength, utilize the easy heat dissipation and the wind-force radiating advantage of dish brake, traditional oil cooling device has been saved, under high-speed brake state, be difficult to produce heat decline, high-speed braking effect is good.

Secondly, a special connection structure of the large spanner shaft and the planet wheel carrier is arranged, so that the large spanner shaft can be easily disassembled without disassembling the tail end transmission shell from the rear axle shell.

And thirdly, the bearing end face of the large spanner shaft is provided with the adjusting nut, so that the gap between the two bearings can be simply adjusted, the maintenance is convenient, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural view of a brake device of a rear axle of a conventional tractor, a tail end power shell and a large spanner shaft.

Fig. 2 is a schematic structural view of a conventional installation manner of a thrust bearing in a large spanner shaft.

Figure 3 is a schematic view of the connection between the novel tractor brake system assembly and the rear axle housing of the tractor.

Fig. 4 is a schematic perspective view of a brake system assembly.

FIG. 5 is a schematic front view of the brake system assembly.

Fig. 6 is a cross-sectional view at a-a in fig. 5.

Fig. 7 is a partially enlarged view of a stopper at the connection between the planetary carrier and the large throw shaft in fig. 6.

Fig. 8 is a schematic structural view of a gap adjusting device between a large spanner shaft and a thrust bearing.

Fig. 9 is a cross-sectional view at B-B in fig. 8.

Fig. 10 is a schematic perspective view of fig. 8.

Detailed Description

For convenience of explanation, the novel tractor brake system assembly of the invention will be described in detail with reference to fig. 3-10.

As shown in fig. 3 to 6, a novel tractor braking system assembly comprises an end transmission housing 2 connected with a rear axle housing 1, wherein a disc brake component 3 is arranged at one end of the end transmission housing 2 away from the rear axle housing 1, the disc brake component 3 comprises at least one group of brake components 3.1 and brake discs 3.2, the brake discs 3.2 are arranged on a brake spindle head 4, and the other end of the brake spindle head 4 is connected with a wheel hub steel ring 5 of a wheel; the brake spindle nose 4 is the tube-shape solid of revolution structure that both ends external diameter is big, and middle external diameter is little to flange dish through setting up at 4 both ends of brake spindle nose has connect the wheel hub steel ring 5 of brake disc 3.2 and wheel respectively, install in the end drive casing 2 and pull axle 6 greatly, pull axle 6 greatly and close on the one end of rear axle housing 1 and be connected with planet wheel carrier 7, pull axle 6 greatly and keep away from the one end of rear axle housing 1 and extend to the end drive casing 2 outside, the end connects the wheel hub steel ring 5 of wheel.

As shown in fig. 4, 6, and 7, a detachable limiting member 8 for limiting axial movement between the planetary carrier 7 and the large wrench shaft 6 is disposed between the planetary carrier 7 and the large wrench shaft 6, an operation hole 9 capable of detaching and installing the limiting member 8 without detaching the terminal transmission housing 2 is disposed on the terminal transmission housing 2, two sealing covers 27 are disposed on the operation hole 9, the opposite sides of the two operation holes 9 are disposed on the terminal transmission housing 2, an installation seat 28 for supporting a carport is further disposed on the terminal transmission housing, the limiting member is one or more of a pin shaft, a screw, and a clip, and when the limiting member is the pin shaft 21, a pin shaft hole 22 is coaxially disposed on the planetary carrier and the large wrench shaft; when the limiting component is a screw, the planet wheel carrier and the large spanner shaft are provided with threaded holes which are coaxially arranged; taking a pin shaft limiting component in the attached drawing as an example, when a large pulling shaft and components thereof in equipment need to be maintained, a sealing cover on an operation hole is disassembled, after internal lubricating oil is drained, a punching needle is utilized to impact the pin shaft from one operation hole, the pin shaft is taken out from the other operation hole, after the pin shaft is separated from a pin shaft hole, the large pulling shaft and a planetary gear frame can be separated in the axial direction, the large pulling shaft is pulled out from the planetary gear frame, after maintenance and repair are completed, the large pulling shaft is inserted into the planetary gear frame, the pin shaft hole is overlapped, the pin shaft is inserted into the pin shaft hole again, the sealing cover is covered, the tail end transmission shell installed on a rear axle shell is not required to be disassembled in the disassembly of the large pulling shaft in the whole process, parts between the two parts are not required to be disassembled, the maintenance efficiency is improved, and the maintenance cost.

The planetary gear carrier is sleeved on the large wrench shaft, the planetary gear carrier and the large wrench shaft are connected through the wire teeth 24, the right side of the planetary gear carrier is one side provided with a rear axle shell, the planetary gear carrier is sleeved on the left side and connected with a planetary gear 14, the planetary gear is engaged with a transmission gear 26 at the end part of a small wrench shaft 23, a sealing cover is arranged on the operation hole, the number of the operation holes is two, and the opposite side of the operation hole is arranged on a tail end power shell.

As shown in fig. 6 and 8 to 10, two thrust bearings 10 are sleeved on a portion of the large wrench shaft 6 located in the terminal transmission housing 2, a gap adjusting device is arranged on an end surface of one thrust bearing 10 far away from the rear axle housing 1, the gap adjusting device is an adjusting nut 11 arranged on the end surface of the thrust bearing 10, an external thread 12 is arranged at a position on the large wrench shaft 6 where the adjusting nut 11 is assembled, a limit clip 13 for limiting the rotation of the adjusting nut 11 is further arranged on one side of the adjusting nut 11 far away from the thrust bearing 10, and a lock nut 15 is further arranged on one side of the limit clip 13 far away from the adjusting nut 11; be equipped with spacing subassembly between spacing checkpost 13 and the adjusting nut 11, spacing subassembly is including setting up spacing hole 16 on spacing checkpost 13, the spacing arch of setting on adjusting nut 11, perhaps set up the spacing screw hole on spacing nut, spacing screw between spacing hole 16 and the spacing nut hole, the adjustment mechanism of adopting above-mentioned structure, when maintenance, need not to adopt the mode of overhaul, with the rear axle box, terminal transmission casing, pull greatly the axle etc. all dismantle, only need with terminal transmission casing installation wheel hub one side sealed lid dismantle can, sealed lid dismantlement back, spill adjusting nut and lock nut of the inside, can directly adjust with the spanner, the operation is simple, high durability and convenient use, the man-hour of maintenance has been saved greatly, increase equipment life.

As shown in fig. 4 to 6, the brake assemblies 3.1 are two groups, and the opposite sides of the brake assemblies 3.1 are arranged at the end part of the end transmission housing 2 far away from the rear axle housing 1.

As shown in fig. 6, one end of the terminal transmission housing 2, which is far away from the rear axle housing 1, is provided with an oil seal assembly 17 which is sleeved on the large wrench shaft 6 and is used for sealing a gap between the large wrench shaft 6 and the terminal transmission housing 2, the end of the terminal transmission housing 2 is further provided with an oil seal cover 18 which is sleeved on the large wrench shaft 6, and the oil seal cover 18 is fixed on the end face of the terminal transmission housing 2 through screws.

The central shaft hole of the brake spindle head 4 is a tapered hole, the size of the shaft hole at one end close to the brake component 3.1 is smaller than that of the shaft hole at one end far away from the brake component 3.1, a conical connecting piece 19 is arranged between the central shaft hole of the brake spindle head 4 and the large pulling shaft 6, the conical connecting piece 19 is sleeved on the large pulling shaft 6, and one end, far away from the brake component 3.1, of the conical connecting piece 19 is provided with a boss 20 used for connecting the brake spindle head 4 and is connected with the brake spindle head 4 through a screw; the conical connecting piece 19 is connected with the large spanner shaft 6 through a key 25 or in a linear tooth connection mode, the inner ring of the thrust bearing 10 is installed on the large spanner shaft 6, and the outer ring of the thrust bearing 10 is installed inside the tail end transmission shell 2.

In the above embodiments, the best mode of the present invention has been described, it is obvious that many changes can be made under the inventive concept, and here, it should be explained that any changes made under the inventive concept will fall into the protective scope of the present invention.

Claims (10)

1. The utility model provides a novel tractor braking system assembly, includes end transmission casing (2) of being connected with rear-axle housing (1), characterized by: the one end that rear axle casing (1) was kept away from in terminal transmission casing (2) is equipped with the dish and stops subassembly (3), the dish is stopped subassembly (3) and is included at least a set of brake subassembly (3.1) and brake disc (3.2), install on brake spindle nose (4) brake disc (3.2), wheel hub steel ring (5) of another termination wheel of brake spindle nose (4).

2. The novel tractor braking system assembly as claimed in claim 1, wherein: the brake spindle nose (4) is a cylindrical revolving body structure with large outer diameter sizes at two ends and small outer diameter size in the middle, and is respectively connected with a brake disc (3.2) and a wheel hub steel ring (5) of a wheel through flange plates arranged at two ends of the brake spindle nose (4).

3. The novel tractor braking system assembly as claimed in claim 1, wherein: install in terminal transmission casing (2) and pull axle (6) greatly, pull axle (6) greatly and be close to the one end of rear axle casing (1) and be connected with planet wheel carrier (7), pull axle (6) greatly and keep away from the one end of rear axle casing (1) and extend to the outside of terminal transmission casing (2), the tip connects wheel hub steel ring (5) of wheel.

4. The novel tractor braking system assembly as claimed in claim 3, wherein: the novel gear box is characterized in that a detachable limiting component (8) which limits axial movement between the planet gear carrier (7) and the large wrench shaft (6) is arranged between the planet gear carrier (7) and the large wrench shaft (6), an operation hole (9) which can detach and install the limiting component (8) under the condition that the tail end transmission shell (2) is not detached is formed in the tail end transmission shell (2), a sealing cover is arranged on the operation hole (9), the number of the operation holes (9) is two, and the opposite sides of the operation holes are arranged on the tail end transmission shell (2).

5. The novel tractor braking system assembly as claimed in claim 3, wherein: the part cover that lies in terminal transmission casing (2) on big axle (6) is equipped with two sets of thrust bearing (10), and a thrust bearing (10) terminal surface of keeping away from rear axle casing (1) is equipped with clearance adjustment device, clearance adjustment device is adjusting nut (11) of setting on thrust bearing (10) terminal surface, the position of assembly adjusting nut (11) is equipped with external screw thread (12) on big axle (6), adjusting nut (11) are kept away from thrust bearing (10) one side and still are equipped with and prescribe a limit to adjusting nut (11) pivoted spacing checkpost (13), one side that adjusting nut (11) were kept away from to spacing checkpost (13) still is equipped with lock nut (15).

6. The novel tractor braking system assembly as claimed in claim 5, wherein: the adjustable limiting clamp is characterized in that a limiting assembly is arranged between the limiting clamp (13) and the adjusting nut (11), and comprises a limiting hole (16) formed in the limiting clamp (13), a limiting protrusion arranged on the adjusting nut (11), or a limiting threaded hole formed in the limiting nut, and a limiting screw arranged between the limiting hole (16) and the limiting nut hole.

7. The novel tractor braking system assembly as claimed in claim 1, wherein: brake subassembly (3.1) are two sets of, brake subassembly (3.1) offside sets up the tip of keeping away from rear axle casing (1) one side in terminal transmission casing (2).

8. The novel tractor braking system assembly as claimed in claim 1, wherein: the one end that rear axle casing (1) was kept away from in terminal transmission casing (2) is equipped with oil blanket subassembly (17) that the suit was used for sealing up clearance between big spanner axle (6) and terminal transmission casing (2) on big spanner axle (6), terminal transmission casing (2) tip still is equipped with oil seal lid (18) of suit on big spanner axle (6), oil seal lid (18) are fixed on terminal transmission casing (2) terminal surface through the screw.

9. The novel tractor braking system assembly as claimed in claim 5, wherein: the shaft hole at brake spindle nose (4) center is the bell mouth, and the shaft hole size that closes on brake subassembly (3.1) one end is less than the shaft hole of keeping away from brake subassembly (3.1) one end, be equipped with toper connecting piece (19) between the central shaft hole of brake spindle nose (4) and pull axle (6) greatly, toper connecting piece (19) suit is on pulling axle (6) greatly, the one end that brake subassembly (3.1) was kept away from in toper connecting piece (19) is equipped with boss (20) that are used for connecting brake spindle nose (4) to be connected with brake spindle nose (4) through the screw.

10. The novel tractor braking system assembly as claimed in claim 9, wherein: the conical connecting piece (19) is in key connection or linear tooth connection with the large spanner shaft (6), the inner ring of the thrust bearing (10) is installed on the large spanner shaft (6), and the outer ring of the thrust bearing (10) is installed inside the tail end transmission shell (2).