A telescopic outrigger

Abstract

A telescopic outrigger, comprising a cylinder block, an outrigger, an elongation end input module, a lifting end input module, a top block, a support plate, a bottom plate, a sealing block, a left cavity, a lifting cavity, and a pressing cavity; wherein the elongation end input module includes an elongation input pipe, and the lifting end input module includes a lifting input pipe and a connection box; the cylinder block is provided with a lifting input port and an elongation input port; the outrigger includes a piston plate, an I-shaped leg, a positioning block, and an inner cavity; a wheel is connected to the lower end of the outrigger, the I-shaped leg includes an I-shaped cross-section, the I-shaped leg can be telescopic in the cylinder block, the lower end of the I-shaped leg extends out of the cylinder block, and the piston plate is arranged at the upper end of the I-shaped leg.

Description

Technical Field

[0001] The present invention relates to the field of components of autonomous mobile vehicles, and particularly to a telescopic outrigger leg. Background Art

[0002] With the progress of modern science and technology, autonomous mobile vehicles have been widely used in various fields. They are widely used in urban and field environments, and also widely used in various fields such as detection, transportation, and rescue. In the face of the intricate environment, there is still a considerable room for improvement in the research of autonomous mobile vehicles.

[0003] In actual engineering practice, the following problems exist:

[0004] First, for the existing autonomous mobile vehicles in the prior art, in the face of intricate terrains, they cannot automatically and effectively adjust their heights flexibly, resulting in poor functionality and adaptability.

[0005] Second, in the prior art, the hydraulic cylinder realizes the stroke change through the movement of the piston. However, for the telescopic outrigger leg of a vehicle, the telescopic structure size between the outrigger leg and the housing is already very long. If the length of the hydraulic cylinder is added, the proportion of the outrigger leg relative to the whole vehicle will be too large, which is obviously infeasible.

[0006] Third, in the prior art, the supply pressures on both sides of the piston in the hydraulic cylinder are similar. However, for the outrigger leg hydraulic cylinder, the different structures on both sides lead to different sizes of the piston chambers, and the size of the piston chamber will affect the pressure and the pressure response.

[0007] Fourth, as mentioned above, for the outrigger leg hydraulic cylinder, the different structures on both sides lead to different sizes of the piston chambers. When the size of the piston chamber is too small, the liquid will be blocked and reflected back, causing an undesired water hammer phenomenon.

[0008] Fifth, the piston in the prior art does not have a stroke positioning function. The sliding parts in other fields may have a stop, but the stop cannot effectively position.

[0009] Sixth, the sliding parts in the prior art may only have a stop, but this is not enough for the telescopic outrigger leg. The telescopic outrigger leg is also affected by gravity, and the combination of gravity and hydraulic pressure will cause too much downward pressure. Summary of the Invention

[0010] In order to overcome the above problems, the present invention proposes a solution to simultaneously solve the above multiple problems.

[0011] The technical solution adopted by the present invention to solve its technical problems is as follows: A telescopic outrigger, comprising a cylinder block, an outrigger, an elongation end input module, a lifting end input module, a top block, a support plate, a bottom plate, a sealing block, a left cavity, a lifting cavity, and a pressing cavity; wherein the elongation end input module includes an elongation input pipe, and the lifting end input module includes a lifting input pipe and a connection box; the cylinder block is provided with a lifting input port and an elongation input port; the outrigger includes a piston plate, an I-shaped leg, a positioning block, and an inner cavity;

[0012] A wheel is connected to the lower end of the outrigger. The I-shaped leg includes an I-shaped cross-section. The I-shaped leg can be telescopic in the cylinder block. The lower end of the I-shaped leg extends out of the cylinder block. The piston plate is arranged at the upper end of the I-shaped leg. A gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder block. The lifting input port is communicated with the gap. The bottom plate is arranged at the lower end of the cylinder block. The thickness of the top wall of the cylinder block is greater than the thickness of the bottom plate;

[0013] The inner wall of the cylinder block is connected with the sealing block. A sliding sealing fit is formed between the sealing block and the I-shaped leg; when placed horizontally, the left cavity is formed on the left side of the sealing block in the cylinder block, the lifting cavity is formed between the sealing block and the piston plate, and the pressing cavity is formed on the right side of the piston plate; the inner cavity is arranged in the I-shaped leg, and the inner cavity is communicated with the lifting cavity through a through hole;

[0014] The positioning block is arranged on the I-shaped leg. When the positioning block abuts against the sealing block, the projection of the axis direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing the inner cavity; the elongation input pipe is communicated with the pressing cavity through the elongation input port, the lifting input pipe is communicated with the lifting cavity through the connection box and the lifting input port, the diameter of the connection box is twice the diameter of the lifting input pipe, and the diameter of the connection box is twice the diameter of the elongation input pipe;

[0015] The top block and the support plate are arranged on the I-shaped leg. The top block is connected with the support plate. The top block and the support plate are located outside the cylinder block. During the retraction stroke of the I-shaped leg into the cylinder block, the support plate can abut against the bottom plate for stroke limit.

[0016] Preferably, the diameter of the lifting input port is twice the diameter of the through hole.

[0017] Preferably, the diameter of the connection box is equal to the diameter of the lifting input port.

[0018] Preferably, the diameter of the lifting input port is twice the diameter of the elongation input port.

[0019] Preferably, the thickness of the top wall is three times the thickness of the bottom plate.

[0020] Preferably, the gap includes a left chamber and a lifting chamber.

[0021] Preferably, the lifting input port communicates with the lifting chamber.

[0022] Preferably, the positioning block does not abut against the inner wall of the cylinder block.

[0023] Preferably, the cylinder block has a rectangular cross-section.

[0024] Preferably, the lifting input port is arranged on the cylinder wall corresponding to the long side of the cross-section of the cylinder block.

[0025] The beneficial effects of the present invention are as follows:

[0026] First, in response to the first point raised in the background art, a hydraulic-controlled telescopic support leg is provided, so as to better achieve automatic control of the telescopic movement of the support leg and adapt to different terrains.

[0027] Second, in response to the second point raised in the background art, the telescopic movement of the support leg is combined with the telescopic movement of the hydraulic cylinder, and the support leg is incorporated into the hydraulic cylinder module. At the same time, the support leg is set as an I-shaped structure, and the concave part of the I-shaped structure initially provides the space for the piston chamber, thereby constructing a preliminary hydraulic space between the support leg and the hydraulic cylinder body, reducing the overall length of the telescopic module, and better serving the lifting action.

[0028] Third, in response to the third point raised in the background art, by using the principle of "slower flow rate and increased pressure" involved in Bernoulli's principle, a connecting diffuser box is arranged between the input pipe corresponding to the lifting input end of the support leg and the hydraulic cylinder body. The diffuser box increases the input space to reduce the flow rate, thereby objectively increasing the pressure and enlarging the input space to better achieve the lifting action.

[0029] Fourth, in response to the fourth point raised in the background art, a further enlarged space is constructed. Specifically, a cavity is opened inside the I-shaped support leg, and the cavity is connected to the lifting space through a hole, thereby further enlarging the lifting piston chamber and avoiding the blocking water hammer caused by the too small lifting piston chamber.

[0030] Fifth, in response to the fifth point raised in the background art, a positioning block is arranged on the I-shaped support leg, which can not only achieve stopping, but also directly align the lifting input port with the internal cavity of the support leg when the support leg is in the extended position, so that the input liquid directly enters the internal cavity to avoid blocking water hammer.

[0031] Sixth, in response to the sixth point raised in the background art, an external stop structure is arranged outside the hydraulic cylinder. The external stop structure includes a top block and a support plate, and the support plate supports the hydraulic cylinder body, thereby simultaneously playing the roles of external stop and supporting gravity.

[0032] Note: The above designs are not in any particular order, and each of them makes the present invention different and significantly improved compared with the prior art. Brief Description of the Drawings

[0033] The present invention will be further described below in conjunction with the drawings and embodiments.

[0034] Figure 1 It is a schematic diagram of the retracted state of the outrigger of the present invention.

[0035] Figure 2 It is a schematic diagram of the extended state of the outrigger of the present invention

[0036] Figure 3 It is a cross-sectional view of the inside of the hydraulic cylinder in the retracted state of the present invention.

[0037] Figure 4 It is a cross-sectional view of the inside of the hydraulic cylinder in the extended state of the present invention

[0038] Figure 5 It is a cross-sectional view of the lateral position of the sealing block of the present invention

[0039] In the figure, the reference numerals are as follows:

[0040] 1. cylinder block, 2. outrigger, 3. rotating shaft, 4. wheel, 5. extension end input module, 6. lifting end input module, 7. top block, 8. support plate, 9. top wall, 10. bottom plate, 11. lifting input port, 12. extension input port, 13. lifting input pipe, 14. connection box, 15. extension input pipe, 16. positioning block, 17. piston plate, 18. I-shaped leg, 19. left chamber, 20. sealing block, 21. lifting chamber, 22. pressing chamber, 23. through hole, 24. inner cavity, 25. gap. Detailed Description of the Invention

[0041] As shown in the figure: A telescopic outrigger includes a cylinder block, an outrigger, an extension end input module, a lifting end input module, a top block, a support plate, a bottom plate, a sealing block, a left chamber, a lifting chamber, and a pressing chamber; wherein the extension end input module includes an extension input pipe, and the lifting end input module includes a lifting input pipe and a connection box; the cylinder block is provided with a lifting input port and an extension input port; the outrigger includes a piston plate, an I-shaped leg, a positioning block, and an inner cavity.

[0042] The lower end of the outrigger is connected with a wheel, the I-shaped leg includes an I-shaped cross-section, the I-shaped leg can be telescopic in the cylinder block, the lower end of the I-shaped leg extends out of the cylinder block, the piston plate is arranged at the upper end of the I-shaped leg, a gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder block, the lifting input port is communicated with the gap, the bottom plate is arranged at the lower end of the cylinder block, and the thickness of the top wall of the cylinder block is greater than the thickness of the bottom plate;

[0043] The inner wall of the cylinder body is connected with the sealing block, and a sliding sealing fit is formed between the sealing block and the I-shaped leg; when placed horizontally, the left cavity is formed on the left side of the sealing block in the cylinder body, the lifting cavity is formed between the sealing block and the piston plate, and the downward pressing cavity is formed on the right side of the piston plate; an inner cavity is arranged in the I-shaped leg, and the inner cavity communicates with the lifting cavity through a through hole.

[0044] The I-shaped leg is provided with the positioning block. When the positioning block abuts against the sealing block, the projection of the axis direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing the inner cavity; the elongation input pipe communicates with the downward pressing cavity through the elongation input port, the lifting input pipe communicates with the lifting cavity through the connection box and the lifting input port, the diameter of the connection box is twice the diameter of the lifting input pipe, and the diameter of the connection box is twice the diameter of the elongation input pipe.

[0045] The I-shaped leg is provided with the top block and the support plate. The top block is connected with the support plate. The top block and the support plate are located outside the cylinder body. During the retraction stroke of the I-shaped leg into the cylinder body, the support plate can abut against the bottom plate for stroke limit.

[0046] As shown in the figure: the diameter of the lifting input port is twice the diameter of the through hole. The diameter of the connection box is equal to the diameter of the lifting input port. The diameter of the lifting input port is twice the diameter of the elongation input port. The thickness of the top wall is three times the thickness of the bottom plate. The gap includes the left cavity and the lifting cavity. The lifting input port communicates with the lifting cavity. The positioning block does not abut against the inner wall of the cylinder body. The cylinder body includes a rectangular cross-section. The lifting input port is arranged on the cylinder wall corresponding to the long side of the cross-section of the cylinder body.

[0047] The working principle of the unmanned vehicle corresponding to the telescopic leg is that each wheel corresponds to a hub motor, and each hub motor drives the corresponding wheel to move respectively.

[0048] The above detailed description is a specific description of the feasible embodiments of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or change without departing from the present invention shall be included in the patent scope of this case.

Claims

1. A telescopic outrigger, characterized in that: it includes a cylinder block, an outrigger, an elongation end input module, a lifting end input module, a top block, a support plate, a bottom plate, a sealing block, a left cavity, a lifting cavity, and a pressing cavity; wherein the elongation end input module includes an elongation input pipe, and the lifting end input module includes a lifting input pipe and a connection box; the cylinder block is provided with a lifting input port and an elongation input port; the outrigger includes a piston plate, an I-shaped leg, a positioning block, and an inner cavity; a wheel is connected to the lower end of the outrigger, the I-shaped leg includes an I-shaped cross-section, the I-shaped leg can be telescopic in the cylinder block, the lower end of the I-shaped leg extends out of the cylinder block, the piston plate is arranged at the upper end of the I-shaped leg, a gap is formed between the concave part of the I-shaped leg and the inner wall of the cylinder block, the lifting input port is communicated with the gap, the bottom plate is arranged at the lower end of the cylinder block, and the thickness of the top wall of the cylinder block is greater than the thickness of the bottom plate; the sealing block is connected to the inner wall of the cylinder block, and a sliding sealing fit is formed between the sealing block and the I-shaped leg; when placed flat, the left cavity is formed on the left side of the sealing block in the cylinder block, the lifting cavity is formed between the sealing block and the piston plate, and the pressing cavity is formed on the right side of the piston plate; the inner cavity is arranged in the I-shaped leg, and the inner cavity is communicated with the lifting cavity through a through hole; the positioning block is arranged on the I-shaped leg, when the positioning block abuts against the sealing block, the projection in the axial direction of the lifting input port extends to cover the through hole, and the piston plate participates in enclosing the inner cavity; the elongation input pipe is communicated with the pressing cavity through the elongation input port, the lifting input pipe is communicated with the lifting cavity through the connection box and the lifting input port, the diameter of the connection box is twice the diameter of the lifting input pipe, and the diameter of the connection box is twice the diameter of the elongation input pipe; the top block and the support plate are arranged on the I-shaped leg, the top block is connected to the support plate, the top block and the support plate are located outside the cylinder block, and during the retraction stroke of the I-shaped leg into the cylinder block, the support plate can abut against the bottom plate for stroke limit.

2. A telescopic outrigger according to claim 1, characterized in that: the diameter of the lifting input port is twice the diameter of the through hole.

3. A telescopic outrigger according to claim 1, characterized in that: the diameter of the connection box is equal to the diameter of the lifting input port.

4. A telescopic outrigger according to claim 3, characterized in that: the diameter of the lifting input port is twice the diameter of the elongation input port.

5. A telescopic outrigger according to claim 1, characterized in that: the thickness of the top wall is three times the thickness of the bottom plate.

6. A telescopic outrigger according to claim 1, characterized in that: the gap includes the left cavity and the lifting cavity.

7. A telescopic outrigger according to claim 6, characterized in that: the lifting input port is communicated with the lifting cavity.

8. A telescopic outrigger according to claim 1, characterized in that: the positioning block does not abut against the inner wall of the cylinder block.

9. A telescopic outrigger according to claim 1, characterized in that: the cylinder block includes a rectangular cross-section.

10. A telescopic outrigger according to claim 9, characterized in that: the lifting input port is arranged on the cylinder wall corresponding to the long side of the cylinder cross-section.

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