Circulating ball mechanical steering gear shell with oil drainage hole

Abstract

The utility model provides a recirculating ball mechanical steering gear shell with an oil drain hole, which comprises an integrated shell structure composed of an input shell and an output shell arranged at the bottom of the input shell, and an input inner cavity of the input shell is perpendicular to an output inner cavity of the output shell. An oil filling hole is formed in the top shell of the integrated shell structure, an oil discharging hole is formed in the shell at the middle lower end, and the oil filling hole and the oil discharging hole are arranged in a diagonal mode. The recirculating ball mechanical steering gear shell with the oil drainage hole is simple in structure, safe, reliable and good in sealing performance, gear oil replacement maintenance of a recirculating ball steering gear can be facilitated, and the service life of the steering gear is prolonged. The device can be widely popularized and applied to automobile steering gear production enterprises.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering gears, in particular to a circulating ball mechanical steering gear housing with an oil drain hole. Background Art

[0002] The existing commercial vehicle recirculating ball mechanical steering gear, especially the recirculating ball mechanical steering gear on various light trucks, has an internal structure involving high-precision mechanical transmission, which requires the addition of gear oil to reduce the wear of gears and other moving parts, extend the life of gears, and reduce vibration and impact between gears. According to the requirements of the use and maintenance instructions of the recirculating ball mechanical steering gear, the gear oil of the steering gear needs to be replaced every 5,000 kilometers for the first time and every 20,000 kilometers thereafter.

[0003] The housing of the recirculating ball mechanical steering gear has never had an oil drain hole, which is not conducive to oil change and maintenance of the steering gear. Wear of mechanical transmission generally occurs in the early stage. Timely discharge of worn iron chips between gears can increase the service life of the steering gear. Iron chips inside the steering gear can easily cause the steering gear to get stuck. At the same time, iron chips will accelerate the mechanical wear of the steering gear. Severe wear can easily cause the vehicle to have large clearance, abnormal noise, deviation, and return error, affecting the driving comfort of the whole vehicle. Utility Model Content

[0004] The utility model aims at the above technical defects of the existing recirculating ball mechanical steering gear and provides a recirculating ball mechanical steering gear housing with an oil drain hole which has simple structure, is safe and reliable and has good sealing performance.

[0005] The utility model adopts the following technical solutions to solve the above technical problems:

[0006] A recirculating ball mechanical steering gear housing with an oil drain hole comprises an integrated housing structure consisting of an input housing and an output housing arranged at the bottom of the input housing, wherein: the input inner cavity of the input housing is arranged vertically with the output inner cavity of the output housing, a refueling hole is arranged on the top housing of the integrated housing structure, an oil drain hole is arranged on the housing at the middle and lower ends, and the refueling hole and the oil drain hole are arranged diagonally.

[0007] Preferably, the oil filling hole is arranged at the top position of the input end of the input housing, and the oil drain hole is arranged at the lower position of the rear end of the input housing.

[0008] Preferably, a sinking cavity communicating with the oil drain hole is formed on the inner end surface of the tail portion of the input inner cavity of the input housing.

[0009] Preferably, the input port of the refueling hole is arranged obliquely, and the direction of the input port forms an angle of 30-80° with the input direction of the inner cavity of the input housing.

[0010] Preferably, the input port direction of the oil drain hole is in the same direction as the input direction of the inner cavity of the input housing and they are arranged in parallel.

[0011] Preferably, the inner peripheral wall of the oil drain hole is provided with a fine thread and is sealed with a sealing gasket and a plug screw.

[0012] Preferably, the housing of the recirculating ball mechanical steering gear with an oil drain hole further comprises a mounting plate disposed at the bottom of one side of the output housing, wherein:

[0013] The upper end of the mounting plate is integrally connected to the output housing, and the lower end thereof is provided with a first mounting foot, a second mounting foot and a third mounting foot at intervals.

[0014] More preferably, the third mounting foot is vertically arranged at the left end of the mounting plate, and is fixedly connected to the output housing via a reinforcing plate.

[0015] Preferably, the housing of the recirculating ball mechanical steering gear with an oil drain hole further comprises at least two groups of divergently distributed reinforcing ribs arranged on the back of the output housing, wherein:

[0016] A set of reinforcing ribs at the top connects the output end sleeve of the output housing and the bottom of the input housing;

[0017] Another group of reinforcing ribs at the bottom connects the output end sleeve of the output housing and the mounting plate.

[0018] Preferably, each group of reinforcing ribs comprises a first reinforcing rib and a second reinforcing rib, wherein:

[0019] The first reinforcing rib and the second reinforcing rib are both right-angled triangle block structures, and the thickness of the first reinforcing rib is greater than the thickness of the second reinforcing rib.

[0020] The utility model adopts the above technical solution, and compared with the prior art, has the following technical effects:

[0021] The utility model provides a circulating ball mechanical steering gear housing with an oil drain hole. A filling hole is arranged on the top housing of an integrated housing structure, an oil drain hole is arranged on the housing at the middle and lower ends, and the filling hole and the oil drain hole are arranged diagonally. The filling hole and the oil drain hole can be used to facilitate the replacement of gear oil and maintenance of the circulating ball steering gear, thereby extending the service life of the steering gear. The circulating ball mechanical steering gear housing with an oil drain hole has a simple structure, is safe and reliable, and has good sealing performance, and can be widely promoted and applied to automobile steering gear production enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The three-dimensional structure of the housing of a circulating ball mechanical steering gear with an oil drain hole of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the main structure of a recirculating ball mechanical steering gear housing with an oil drain hole of the utility model;

[0024] Figure 3 It is a cross-sectional structural schematic diagram of a housing of a circulating ball mechanical steering gear with an oil drain hole of the utility model;

[0025] Figure 4 The three-dimensional structure of the housing of a circulating ball mechanical steering gear with an oil drain hole of the utility model is shown in FIG. Figure 2 ;

[0026] Figure 5 It is a rear view structural schematic diagram of a recirculating ball mechanical steering gear housing with an oil drain hole of the utility model;

[0027] Figure 6 It is a schematic diagram of the top view of the structure of a recirculating ball mechanical steering gear housing with an oil drain hole of the utility model;

[0028] Figure 7 It is a left-side structural schematic diagram of a recirculating ball mechanical steering gear housing with an oil drain hole of the utility model;

[0029] Figure 8 The utility model is a right side structural schematic diagram of a circulating ball mechanical steering gear housing with an oil drain hole. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0032] In some embodiments, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a recirculating ball mechanical steering gear housing with an oil drain hole is provided, which is simple in structure, safe and reliable, and has good sealing performance. The steering gear housing mainly includes an integrated housing structure consisting of an input housing 10 and an output housing 20, wherein the output housing 20 is arranged at the bottom of the input housing 10. In a recirculating ball mechanical steering gear, the steering gear housing is used to support and fix the input and output, so the input inner cavity of the input housing 10 and the output inner cavity of the output housing 20 are arranged vertically, and are used to arrange the input shaft and the output shaft of the steering gear respectively.

[0033] In order to solve the problem that the shell of the existing recirculating ball mechanical steering gear has no oil drain hole, which is not conducive to the oil change and maintenance of the steering gear, according to the installation arrangement of the recirculating ball mechanical steering gear on the whole vehicle, a refueling hole 40 is provided on the top shell of the integrated shell structure, and an oil drain hole 50 is provided on the shell at the lower end of the integrated shell structure, that is, the refueling hole 40 is arranged at a higher position of the shell, and the oil drain hole 50 is arranged at a lower position of the shell, and the refueling hole 40 and the oil drain hole 50 are arranged diagonally, and the diagonal arrangement is convenient for the discharge and replacement of the gear oil.

[0034] As a preferred embodiment thereof, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the oil filling hole 40 is arranged at the top position of the input end of the input housing 10, and the oil drain hole 50 is arranged at the lower position of the tail end of the input housing 10. The oil filling hole 40 and the oil drain hole 50 are arranged diagonally, which is convenient for filling and draining the recirculating ball mechanical steering gear. The oil filling hole 40 and the oil drain hole 50 can be used to facilitate the maintenance of the gear oil of the recirculating ball steering gear and extend the service life of the steering gear.

[0035] In addition, if Figure 3 and Figure 7 As shown, in order to facilitate the discharge of iron filings inside the steering gear, a sinking cavity 12 connected to the oil drain hole 50 is opened on the inner end surface of the tail of the input inner cavity of the input housing 10, and the depth of the sinking cavity 12 is 2-5mm, preferably 3mm. It can effectively overcome the problem that the iron filings inside the steering gear easily cause the steering gear to get stuck and accelerate the mechanical wear of the steering gear, reduce the occurrence rate of large clearance, abnormal noise, deviation, and return error caused by severe wear, and improve the driving comfort of the whole vehicle.

[0036] In some of the embodiments, Figures 1 to 8 As shown, in order to facilitate the injection of gear oil, the input port of the filling hole 40 is arranged at an angle, and its input port direction is at an angle of 30-80° with the input direction of the inner cavity of the input shell 10; preferably, the input port direction of the filling hole 40 is at an angle of 45° inclined upward with the input direction of the inner cavity of the input shell 10.

[0037] Accordingly, the input port direction of the oil drain hole 50 is arranged in the same direction and parallel to the input direction of the inner cavity of the input housing 10. The inner peripheral wall of the oil drain hole 50 is set to a fine pitch thread, the roughness of the end surface of the housing oil drain hole is Ra3.2, and a sealing gasket and a plug screw are used to seal it to prevent leakage.

[0038] In some of the embodiments, Figures 1 to 8As shown, to facilitate the installation and fixation of the steering gear housing, the recirculating ball mechanical steering gear housing also includes a mounting plate 30 arranged at the bottom of one side of the output housing 20, the upper end of the mounting plate 30 is integrally connected to the output housing 20, and the lower end thereof is spaced apart with a first mounting foot 31, a second mounting foot 32 and a third mounting foot 33.

[0039] The first mounting foot 31 and the second mounting foot 32 are hollow columnar structures, which are vertically mounted at the right end and the middle position of the lower part of the mounting plate 30, and corresponding through holes are opened on the mounting plate 30 for mounting bolts.

[0040] The third mounting leg 33 is a block structure, one end of which is provided with a mounting hole, and the other end is vertically arranged at the left end of the mounting plate 30. The side wall of the third mounting leg 33 is fixedly connected to the output housing 20 through a reinforcing plate 34 to improve the stability of the third mounting leg 33 structure and ensure the stability of the steering gear housing installation.

[0041] In some of the embodiments, Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, because the steering torque of the steering gear at the protruding part of the housing output end is relatively large when the steering gear is in use, the steering gear housing further includes at least two groups of divergently distributed reinforcing ribs 60 arranged on the back of the output housing 20, and the upper group of reinforcing ribs 60 connects the output end sleeve 21 of the output housing 20 and the bottom of the input housing 10, and is used to strengthen the connection between the output housing 20 and the housing input housing 10. The other group of reinforcing ribs 60 at the lower side connects the output end sleeve 21 of the output housing 20 and the mounting plate 30, and is used to strengthen the connection between the output housing 20 and the mounting plate 30.

[0042] Specifically, each group of the reinforcing ribs 60 includes a first reinforcing rib 61 and a second reinforcing rib 62, and the two groups of the first reinforcing ribs 61 and the second reinforcing ribs 62 are scatteredly arranged. The first reinforcing ribs 61 and the second reinforcing ribs 62 are both right-angled triangular block structures, which are welded to the input housing 10, the output housing 20 and the mounting plate 30 as a whole. And according to the installation requirements, the thickness of the first reinforcing rib 61 is set to be greater than the thickness of the second reinforcing rib 62, so as to improve the local force bearing capacity of the housing.

[0043] In summary, the circulating ball mechanical steering gear housing with an oil drain hole has a simple structure, is safe and reliable, has good sealing performance, can facilitate the replacement of gear oil and maintenance of the circulating ball steering gear, and prolongs the service life of the steering gear. It can be widely promoted and used in automobile steering gear manufacturers, and has good practical value and social promotion and application value.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0045] Secondly, the drawings of the embodiments disclosed in the present utility model only involve structures related to the embodiments disclosed in the present utility model, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0046] Finally, 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A recirculating ball mechanical steering gear housing with an oil drain hole, characterized in that: It comprises an integrated shell structure consisting of an input shell and an output shell arranged at the bottom of the input shell, wherein: the input inner cavity of the input shell is arranged vertically with the output inner cavity of the output shell, a refueling hole is arranged on the top shell of the integrated shell structure, an oil drain hole is arranged on the shell at the middle and lower ends, and the refueling hole and the oil drain hole are arranged diagonally.

2. The recirculating ball mechanical steering gear housing with oil drain hole according to claim 1, characterized in that: The top position of the input end of the input housing is provided with the oil filling hole, and the lower position of the rear end of the input housing is provided with the oil drain hole.

3. The recirculating ball mechanical steering gear housing with oil drain hole according to claim 2, characterized in that: The inner end surface of the tail of the input inner cavity of the input housing is provided with a sinking cavity connected to the oil drain hole.

4. The recirculating ball mechanical steering gear housing with an oil drain hole according to claim 2, characterized in that: The input port of the refueling hole is arranged obliquely, and the direction of the input port forms an angle of 30-80° with the input direction of the inner cavity of the input shell.

5. The recirculating ball mechanical steering gear housing with oil drain hole according to claim 2, characterized in that: The input port direction of the oil drain hole is in the same direction as the input direction of the inner cavity of the input housing and they are arranged in parallel.

6. The recirculating ball mechanical steering gear housing with oil drain hole according to claim 1, characterized in that: The inner peripheral wall of the oil drain hole is arranged with a fine pitch thread and is sealed with a sealing gasket and a plug screw.

7. The recirculating ball mechanical steering gear housing with an oil drain hole according to claim 1, characterized in that: It also includes a mounting plate disposed at the bottom of one side of the output housing, wherein: The upper end of the mounting plate is integrally connected to the output housing, and the lower end thereof is provided with a first mounting foot, a second mounting foot and a third mounting foot at intervals.

8. The recirculating ball mechanical steering gear housing with oil drain hole according to claim 7, characterized in that: The third mounting foot is vertically arranged at the left end of the mounting plate, and is fixedly connected to the output housing via a reinforcing plate.

9. The recirculating ball mechanical steering gear housing with an oil drain hole according to claim 1, characterized in that: It also includes at least two groups of divergently distributed reinforcing ribs arranged on the back of the output housing, wherein: A set of reinforcing ribs at the top connects the output end sleeve of the output housing and the bottom of the input housing; Another group of reinforcing ribs at the bottom connects the output end sleeve of the output housing and the mounting plate.

10. The recirculating ball mechanical steering gear housing with an oil drain hole according to claim 9, characterized in that: Each group of reinforcing ribs comprises a first reinforcing rib and a second reinforcing rib, wherein: The first reinforcing rib and the second reinforcing rib are both right-angled triangle block structures, and the thickness of the first reinforcing rib is greater than the thickness of the second reinforcing rib.

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