Steering power take-off device for steering system of hydraulic flat car

Abstract

The utility model discloses a steering power take-off device for a steering system of a hydraulic flat car, which relates to the field of hydraulic flat car devices and comprises an upper steering turntable and a lower steering turntable. Two sets of steering main shafts are arranged between the upper steering rotary disc and the lower steering rotary disc at intervals in the transverse width direction, and each set of steering main shafts are used for being connected with plungers of the corresponding hydraulic cylinders. The steering device is characterized in that each group of steering main shafts axially penetrates through an upper steering turntable and a lower steering turntable which are arranged up and down, the upper ends of the steering main shafts are fixed at the top of the upper steering turntable, and the lower ends of the steering main shafts are fixed at the bottom of the lower steering turntable; the steering main shaft is located in the area between the upper base plate and the lower base plate of the lower steering rotary disc and connected with a plunger of the corresponding hydraulic cylinder through a shaft sleeve. According to the utility model, the whole structure is simpler, the assembly and disassembly are convenient, and the stability of the whole structure can be improved; and meanwhile, the problem of non-coaxial movement between parts is solved, and steering transmission during operation is more effective.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic flatbed trucks, and in particular to a steering power take-off device for a steering system of a hydraulic flatbed truck. Background Art

[0002] Hydraulic flatbed truck is a key equipment in large-scale transportation vehicles, such as Figure 1 As shown, the hydraulic flatbed truck includes a traction rod A, a traction turntable B, an upper transmission rod C, a steering power take-off device D, a lower transmission rod E, an axle bridge steering wheel F, a steering tie rod G and a trailer axle bridge H. The torque transmission process of the hydraulic flatbed truck is: the traction vehicle drives the traction rod A, the traction rod A drives the traction turntable B, the traction turntable B drives the upper transmission rod C, the upper transmission rod C drives the steering power take-off device D, the steering power take-off device D drives the lower transmission rod E, the lower transmission rod E drives the axle bridge steering wheel F, the axle bridge steering wheel F drives the steering tie rod G, and the steering tie rod G drives the trailer axle bridge H (including the wheel axle tire) to steer. It can be seen that the steering power take-off device is a key structure in the steering system of the hydraulic flatbed truck.

[0003] The existing steering power take-off device used in the steering system of the hydraulic flatbed truck, such as Figure 2-3 As shown, it includes an upper steering turntable 1, a lower steering turntable 10, a limit pin sleeve 4, a steering spindle 2', a shaft sleeve 9 and other components. Among them, the upper steering turntable 1 is connected and fixed to the lower steering turntable 10 through a plurality of fastening bolts 3 and the steering spindle 2'. In this steering power take-off device, since there is a through-installation gap between the fastening bolts 3 and the bolt holes, and the steering spindle 2' is assembled between the upper steering turntable 1 and the lower steering turntable 10 in a blind hole through-installation manner, not only is the assembly difficult, but also there is a technical problem of coaxiality difference between the upper steering turntable 1 and the lower steering turntable 10 under the action of the blind hole assembly structure of the steering spindle 2', resulting in a poor limiting effect, which directly affects the steering stability of the connected upper transmission rod and the lower transmission rod, and is prone to jamming failure. Utility Model Content

[0004] The utility model provides a steering power take-off device for a hydraulic flatbed truck steering system, in order to solve the technical problems in the prior art that the steering power take-off device is difficult to assemble, difficult to ensure coaxiality and easy to be damaged.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A steering power take-off device for a hydraulic flatbed truck steering system comprises an upper steering turntable and a lower steering turntable; the lower steering turntable comprises an upper base plate and a lower base plate connected together by a limit pin sleeve; the upper steering turntable is fixedly connected to the upper base plate; between the upper steering turntable and the lower steering turntable, two groups of steering spindles are arranged along the horizontal width direction, and each group of steering spindles is used to connect the plunger of the corresponding hydraulic cylinder;

[0007] Each group of steering spindles axially penetrates the upper steering turntable and the lower steering turntable arranged in the upper and lower positions, the upper end of the steering spindle is fixed at the top of the upper steering turntable, and the lower end of the steering spindle is fixed at the bottom of the lower steering turntable; the steering spindle is located in the area between the upper base plate and the lower base plate, and is connected to the plunger of the corresponding hydraulic cylinder through a bushing.

[0008] The above technical measures make the overall structure simpler and easier to assemble and disassemble by having each group of steering spindles pass through the upper steering turntable box and the lower steering turntable arranged in the upper and lower positions; the upper end of the steering spindle is fixed to the top of the upper steering turntable, and the lower end of the steering spindle is fixed to the bottom of the lower steering turntable, thereby improving the stability of the overall structure; it is conducive to solving the problem of axial movement between components, making steering transmission during operation more efficient.

[0009] Furthermore, an upper sleeve for inserting the steering spindle is connected to the bottom of the upper base plate; the steering spindle at the lower end of the upper sleeve is connected to the plunger of the corresponding hydraulic cylinder. The above technical measures are conducive to improving the structural strength by setting the upper sleeve, and at the same time limit the movement of the plunger to a certain extent.

[0010] Furthermore, a lower sleeve for inserting the steering spindle is connected to the top of the lower base plate; the steering spindle at the upper end of the lower sleeve is connected to the plunger of the corresponding hydraulic cylinder. The above technical measures are conducive to improving the structural strength by setting the lower sleeve, and at the same time limit the movement of the plunger to a certain extent.

[0011] Furthermore, the upper end of the steering spindle is connected with a radially outwardly extending upper end cap; the upper end cap has eccentrically arranged positioning holes, and anti-loosening bolts are installed in the positioning holes, and the anti-loosening bolts are fixed to the upper steering turntable. The above technical measures are conducive to solving the problem of non-coaxial movement between components by arranging anti-loosening bolts and fixing them on the upper steering turntable, so that the upper end of the steering spindle is fixedly connected to the upper steering turntable.

[0012] Furthermore, an oiling nozzle is provided at the upper end of the steering spindle, and an oiling hole communicating with the oiling nozzle is provided on the steering spindle; the oiling nozzle is used to contain lubricating oil. The above technical measures can more conveniently inject lubricating oil into the shaft by providing an oiling nozzle and an oiling hole communicating with the oiling nozzle at the upper end of the steering spindle, thereby simplifying the maintenance process, reducing friction, and extending the life of the steering spindle.

[0013] Furthermore, the steering spindle is a 40Cr alloy steel structure. The above technical measures can improve the structural strength of the steering spindle and enhance safety.

[0014] Furthermore, the roundness error of the steering spindle is ±0.05 mm, and the surface roughness is Ra0.8 um. The above technical measures can improve the manufacturing accuracy of the steering spindle, improve stability, and extend service life.

[0015] Furthermore, the lower end of the steering spindle is connected to a locking nut at the bottom of the lower base plate with a threaded structure. The above technical measure can limit the movement of the steering spindle by threading the locking nut at the bottom of the lower base plate, making the connection between the steering spindle and the lower steering turntable more secure, and at the same time achieving the purpose of easy disassembly and assembly through the threaded connection.

[0016] Furthermore, a detachable limit pin is connected to the steering spindle at the bottom of the locking nut. The above technical measure can limit the movement of the steering spindle by setting the limit pin, and at the same time achieve the purpose of easy disassembly and assembly.

[0017] Furthermore, the upper steering turntable is fixed to the upper base plate by a plurality of fastening bolts; and the joint between the upper steering turntable and the upper base plate is connected by welding. In the above technical measures, the joint between the upper steering turntable and the upper base plate of the lower steering turntable is connected by welding, which improves the structural stability and helps to solve the problem of non-coaxial movement between components.

[0018] One or more technical solutions provided by the utility model have at least the following technical effects or advantages:

[0019] In the utility model, each group of steering spindles passes through the upper steering turntable box and the lower steering turntable arranged in the upper and lower positions, so that the overall structure is simpler and convenient for assembly and disassembly; the upper end of the steering spindle is fixed to the top of the upper steering turntable, and the lower end of the steering spindle is fixed to the bottom of the lower steering turntable, so as to improve the stability of the overall structure; it is helpful to solve the problem of different axis movement between components, so that the steering transmission during operation is more effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of the present utility model, and do not constitute a limitation on the embodiments of the present utility model;

[0021] Figure 1 It is a structural schematic diagram of a hydraulic flatbed truck steering system in the prior art;

[0022] Figure 2 It is a structural schematic diagram of a steering power take-off device in the prior art;

[0023] Figure 3 is a cross-sectional view of a steering power take-off device in the prior art;

[0024] Figure 4 It is a structural schematic diagram of the steering power take-off device in the utility model;

[0025] Figure 5 It is a cross-sectional view of the steering power take-off device in the utility model;

[0026] Figure 6 It is a structural schematic diagram of the upper steering turntable in the utility model;

[0027] Figure 7 It is a structural schematic diagram of the lower steering turntable in the utility model;

[0028] Figure 8 It is a structural schematic diagram of the steering spindle in the utility model;

[0029] Fig. 9 It is a schematic diagram of the top view of the steering spindle in the utility model;

[0030] Among them, 1-upper steering turntable, 2-steering spindle, 3-fastening bolt, 4-limit pin sleeve, 5-upper end cap, 6-anti-loosening bolt, 7-oil nozzle, 8-limit pin hole, 9-shaft sleeve, 10-lower steering turntable, 101-upper base plate, 102-lower base plate, 11-upper sleeve, 12-lower sleeve, A-traction rod, B-traction turntable, C-upper transmission rod, D-steering power take-off device, E-lower transmission rod, F-axle bridge steering wheel, G-steering tie rod, H-trailer axle bridge. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those within the scope of this description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0033] Reference Figure 4-8 The present embodiment provides a steering power take-off device for a hydraulic flatbed truck steering system, comprising an upper steering turntable 1 and a lower steering turntable 10; the lower steering turntable 10 has an upper base plate and a lower base plate connected together by a limit pin sleeve 4; the upper steering turntable 1 is fixedly connected to the upper base plate 101; between the upper steering turntable 1 and the lower steering turntable 10, two groups of steering spindles 2 are arranged along the horizontal width direction, and each group of steering spindles 2 is used to connect the plunger of the corresponding hydraulic cylinder;

[0034] Each group of steering spindles 2 axially penetrates the upper steering turntable 1 and the lower steering turntable 10 arranged in the upper and lower positions. The upper end of the steering spindle 2 is fixed at the top of the upper steering turntable 1, and the lower end of the steering spindle 2 is fixed at the bottom of the lower steering turntable 10; the steering spindle 2 is located in the area between the upper base plate 101 and the lower base plate 102, and is connected to the plunger of the corresponding hydraulic cylinder through the shaft sleeve 9.

[0035] In the above embodiment, the upper steering turntable 1 and the lower steering turntable 2 are both correspondingly provided with through holes, so that the steering shaft can axially penetrate the upper steering turntable 1 and the lower steering turntable 2 arranged in the upper and lower positions through the through holes.

[0036] Reference Figure 7 In some embodiments of the present invention, an upper sleeve 11 for mounting the steering spindle 2 is connected to the bottom of the upper base plate 101; the steering spindle 2 at the lower end of the upper sleeve 11 is connected to the plunger of the corresponding hydraulic cylinder.

[0037] When in use, the upper sleeve 11 can limit the movement of the plunger.

[0038] Reference Figure 7 In some embodiments of the present invention, a lower sleeve 12 for mounting the steering spindle 2 is connected to the top of the lower base plate 102; the steering spindle 2 at the upper end of the lower sleeve 12 is connected to the plunger of the corresponding hydraulic cylinder.

[0039] When in use, the lower sleeve 12 can limit the movement of the plunger.

[0040] Reference Figure 8-9 In some embodiments of the utility model, the upper end of the steering spindle 2 is connected to a radially outwardly extending upper end cap 5; the upper end cap 5 has eccentrically arranged positioning holes, and anti-loosening bolts 6 are installed in the positioning holes, and the anti-loosening bolts 6 are fixed on the upper steering turntable 1.

[0041] When in use, the anti-loosening bolt 6 can securely connect the upper end of the steering spindle 2 to the upper steering turntable 1 .

[0042] Reference Figure 8-9 In some embodiments of the utility model, an oiling nozzle 7 is provided at the upper end of the steering spindle 2, and an oil distribution hole communicating with the oiling nozzle 7 is provided on the steering spindle 2; the oiling nozzle 7 is used to contain lubricating oil.

[0043] When the lubricating oil is exhausted, the lubricating oil is filled into the oil filling nozzle from the upper end of the steering spindle 2, and the lubricating oil is distributed to various parts through the oil distribution holes.

[0044] In some embodiments of the present invention, the steering spindle 2 is a 40Cr alloy steel structure.

[0045] In the above embodiment, the tensile strength of 40Cr alloy steel is 1000 MPa, the yield strength is 800 MPa, and the impact toughness is 60 J / cm².

[0046] In some embodiments of the present invention, the roundness error of the steering spindle 2 is ±0.05 mm, and the surface roughness is Ra0.8 um.

[0047] In the above embodiment, the roundness error of the shaft hole corresponding to the steering spindle 2 can be ±0.05mm, and the surface roughness can be Ra0.8um.

[0048] In some embodiments of the present invention, a locking nut is connected to the lower end of the steering spindle 2 at the bottom of the lower base plate 102 by a threaded structure.

[0049] When in use, rotate the locking nut to achieve the limiting function, and turn the locking nut back to remove the locking nut.

[0050] In some embodiments of the present invention, a detachable limit pin is connected to the steering spindle 2 at the bottom of the locking nut.

[0051] Reference Figure 8 In the above embodiment, a limit pin hole 8 is provided at the lower end of the steering spindle 2, and the limit pin hole 8 is fastened to the lower end of the steering spindle 2 and the lower steering turntable 10 by cooperating with the limit pin.

[0052] When in use, the limiting purpose is achieved by inserting the limiting pin into the limiting pin hole 8 . When disassembly is required, the limiting effect on the lower end of the steering spindle 2 can be released by removing the limiting pin.

[0053] In some embodiments of the present invention, the upper steering turntable 1 is connected and fixed to the upper base plate 101 by a plurality of fastening bolts 3; and the joint between the upper steering turntable 1 and the upper base plate 101 is connected by welding.

[0054] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0055] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A steering power take-off device for a hydraulic flatbed truck steering system, comprising an upper steering turntable (1) and a lower steering turntable (10); The lower turning disc (10) comprises an upper base plate (101) and a lower base plate (102) connected together by a limit pin sleeve (4); The upper turning disc (1) is fixedly connected to the upper base plate (101); Between the upper steering turntable (1) and the lower steering turntable (10), two groups of steering spindles (2) are arranged at intervals along the horizontal width direction, and each group of steering spindles (2) is used to connect the plunger of the corresponding hydraulic cylinder; Features: Each set of steering spindles (2) axially penetrates the upper steering turntable (1) and the lower steering turntable (10) arranged in an upper and lower position, the upper end of the steering spindle (2) is fixed to the top of the upper steering turntable (1), and the lower end of the steering spindle (2) is fixed to the bottom of the lower steering turntable (10); The steering spindle (2) is located in the area between the upper base plate (101) and the lower base plate (102), and is connected to the plunger of the corresponding hydraulic cylinder via a shaft sleeve (9).

2. According to claim 1, the steering power take-off device for the hydraulic flatbed truck steering system is characterized in that: An upper sleeve (11) for inserting the steering spindle (2) is connected to the bottom of the upper base plate (101); The steering spindle (2) at the lower end of the upper sleeve (11) is connected to the plunger of a corresponding hydraulic cylinder.

3. According to claim 1, the steering power take-off device for the hydraulic flatbed truck steering system is characterized in that: A lower sleeve (12) for inserting the steering spindle (2) is connected to the top of the lower base plate (102); The steering spindle (2) at the upper end of the lower sleeve (12) is connected to the plunger of the corresponding hydraulic cylinder.

4. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 1, characterized in that: The upper end of the steering spindle (2) is connected to a radially outwardly extending upper end cap (5); The upper end cap (5) has eccentrically arranged positioning holes, and anti-loosening bolts (6) are installed in the positioning holes. The anti-loosening bolts (6) are fixed on the upper steering turntable (1).

5. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 1 or 4, characterized in that: An oil injection nozzle (7) is provided at the upper end of the steering main shaft (2), and an oil distribution hole communicating with the oil injection nozzle (7) is provided on the steering main shaft (2); The oiling nozzle (7) is used to contain lubricating oil.

6. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 5, characterized in that: The steering spindle (2) is made of 40Cr alloy steel.

7. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 6, characterized in that: The roundness error of the steering spindle (2) is ±0.05 mm, and the surface roughness is Ra0.8 um.

8. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 1, characterized in that: The lower end of the steering spindle (2) is connected to a locking nut at the bottom of the lower base plate (102) via a threaded structure.

9. The steering power take-off device for a hydraulic flatbed truck steering system according to claim 8, characterized in that: A detachable limit pin is connected to the steering spindle (2) at the bottom of the locking nut.

10. The steering power take-off device for a hydraulic flatbed vehicle steering system according to claim 1, characterized in that: The upper steering turntable (1) is connected and fixed to the upper base plate (101) via a plurality of fastening bolts (3); Furthermore, the joint between the upper steering turntable (1) and the upper base plate (101) is connected by welding.

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