A mechanical hydraulic push rod

Abstract

The present invention relates to the technical field of push rods, and in particular to a mechanical hydraulic push rod. A mechanical hydraulic push rod comprises a base, a hydraulic cylinder and a sleeve are fixedly connected to the base, a first piston is slidably connected in the sleeve, a support rod is fixedly connected to the first piston, a second piston is slidably connected in the hydraulic cylinder, a driving mechanism for driving the second piston to slide up and down is connected to the second piston, an oil guide pipe is connected between the hydraulic cylinder and the sleeve, hydraulic oil is arranged in the hydraulic cylinder, the hydraulic oil is located below the second piston, an air intake pipe is arranged on the hydraulic cylinder, a nozzle is arranged on the sleeve, and the jet end of the nozzle is aimed at the side wall of the support rod; the present invention facilitates the control of the extension and retraction of the support rod through the arrangement of the sleeve, the first piston, the driving mechanism, the hydraulic cylinder, and the second piston, and facilitates the cleaning of dust attached to the outer wall of the support rod when the support rod is retracted through the arrangement of the air intake pipe, the exhaust pipe, and the nozzle.

Description

Technical Field

[0001] The present invention relates to the technical field of push rods, and in particular to a mechanical hydraulic push rod. Background Art

[0002] Mechanical hydraulic push rods are suitable for the need to push and pull in a straight line, or reciprocate a certain angle, and can also be used in places where workpieces need to be raised, lowered or clamped. They can also be used for centralized or program control at long distances and in dangerous areas. They have been widely used in metallurgy, mining, coal, electricity, machinery, food, cement, chemical industry, water conservancy, transportation and other departments, and are a universal power source.

[0003] Most existing mechanical hydraulic push rods are inconvenient to clean the dust and water vapor attached to the telescopic end of the push rod, which causes the telescopic end to rust after being retracted into the push rod, thus shortening the service life of the push rod. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is inconvenient to clean the dust and water vapor attached to the telescopic end of the push rod, resulting in rust after the telescopic end is retracted into the push rod, and a mechanical hydraulic push rod is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A mechanical hydraulic push rod comprises a base, a hydraulic cylinder and a sleeve are fixedly connected to the base, a first piston is slidably connected in the sleeve, a support rod is fixedly connected to the first piston, a second piston is slidably connected in the hydraulic cylinder, a driving mechanism for driving the second piston to slide up and down is connected to the second piston, an oil guide pipe is connected between the hydraulic cylinder and the sleeve, hydraulic oil is provided in the hydraulic cylinder, and the hydraulic oil is located below the second piston, an air intake pipe is provided on the hydraulic cylinder, a nozzle is provided on the sleeve, the jet end of the nozzle is aligned with the side wall of the support rod, an exhaust pipe is connected between the hydraulic cylinder and the nozzle, and both the air intake pipe and the exhaust pipe are provided with a one-way valve.

[0007] Preferably, the driving mechanism comprises a forward and reverse motor, an output end of the forward and reverse motor is fixedly connected to a threaded rod, a sleeve is threadedly connected to the threaded rod, and one end of the sleeve away from the threaded rod is fixedly connected to the second piston.

[0008] Preferably, a cleaning brush is fixedly connected to the nozzle, and the cleaning brush is in contact with the side wall of the support rod.

[0009] Preferably, a slot is provided on the sleeve, and the nozzle is connected to the slot by interference fit.

[0010] Preferably, one end of the support rod away from the sleeve is threadedly connected to a support plate, and the support plate is provided with anti-slip grooves.

[0011] Compared with the prior art, the present invention provides a mechanical hydraulic push rod, which has the following beneficial effects:

[0012] 1. For the mechanical hydraulic push rod, the staff fixedly connects the base of the push rod with the equipment. When the push rod is put into use, the driving mechanism is started to drive the second piston to slide in the hydraulic cylinder in the direction close to the oil guide pipe, and the hydraulic oil in the hydraulic cylinder is pressed into the casing along the oil guide pipe. The hydraulic oil entering the casing pushes the first piston to move in the direction close to the support rod, thereby causing the support rod to slide out of the casing. At the same time, the outside air enters the hydraulic cylinder along the air inlet pipe for storage. The driving mechanism is started to drive the second piston to slide in the hydraulic cylinder in the direction away from the oil guide pipe. The hydraulic oil in the casing enters the hydraulic cylinder along the oil guide pipe, and the support rod slides into the casing. At the same time, the second piston discharges the air in the hydraulic cylinder into the nozzle along the exhaust pipe, and the nozzle sprays the gas on the side wall of the support rod to clean the dust attached to the side wall of the support rod.

[0013] 2. This mechanical hydraulic push rod, when the forward and reverse motor drives the threaded rod to rotate forward, the threaded rod drives the second piston to slide downward in the hydraulic cylinder through the sleeve. When the forward and reverse motor drives the threaded rod to rotate reversely, the threaded rod drives the second piston to slide upward in the hydraulic cylinder through the sleeve.

[0014] 3. When the mechanical hydraulic push rod slides through the support rod, the cleaning brush cleans the dust adhering to the outer wall of the support rod. The setting of the cleaning brush facilitates increasing the cleaning effect of the nozzle on the support rod.

[0015] 4. For this mechanical hydraulic push rod, the staff can clean the cleaning brush by removing the nozzle.

[0016] 5. The mechanical hydraulic push rod can increase the supporting effect of the support rod by setting the support plate, and the anti-slip pattern can increase the friction of the support surface of the support plate.

[0017] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The present invention facilitates the control of the extension and retraction of the support rod through the arrangement of the sleeve, the first piston, the driving mechanism, the hydraulic cylinder, and the second piston. The arrangement of the air intake pipe, the exhaust pipe, and the nozzle facilitates the cleaning of dust attached to the outer wall of the support rod when the support rod is retracted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a mechanical hydraulic push rod proposed by the present invention;

[0019] Figure 2This is a structural schematic diagram of part A of a mechanical hydraulic push rod proposed by the present invention;

[0020] Figure 3 This is a structural schematic diagram of part B of a mechanical hydraulic push rod proposed by the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of a mechanical hydraulic push rod according to another embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of a mechanical hydraulic push rod structure according to another embodiment of the present invention.

[0023] In the figure: 1. base; 2. sleeve; 201. first piston; 202. support rod; 203. support plate; 3. hydraulic cylinder; 301. second piston; 302. sleeve; 303. oil guide pipe; 304. intake pipe; 305. exhaust pipe; 4. forward and reverse motor; 401. threaded rod; 5. nozzle; 501. cleaning brush; 306. second sleeve; 6. groove; 7. spring; 8. triangular block; 9. triangular groove. DETAILED DESCRIPTION

[0024] 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 the embodiments.

[0025] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] See also Figures 1 to 5 , the present invention provides a technical solution:

[0027] Reference Figure 1-5A mechanical hydraulic push rod comprises a base 1, a hydraulic cylinder 3 and a sleeve 2 are fixedly connected to the base 1, a first piston 201 is slidably connected in the sleeve 2, a support rod 202 is fixedly connected to the first piston 201, a second piston 301 is slidably connected in the hydraulic cylinder 3, a driving mechanism for driving the second piston 301 to slide up and down is connected to the second piston 301, an oil guide pipe 303 is connected between the hydraulic cylinder 3 and the sleeve 2, hydraulic oil is arranged in the hydraulic cylinder 3, and the hydraulic oil is located below the second piston 301, an air inlet pipe 304 is arranged on the hydraulic cylinder 3, a nozzle 5 is arranged on the sleeve 2, the jet end of the nozzle 5 is aligned with the side wall of the support rod 202, an exhaust pipe 305 is connected between the hydraulic cylinder 3 and the nozzle 5, and both the air inlet pipe 304 and the exhaust pipe 305 are provided with a one-way valve.

[0028] The staff fixedly connected the base 1 of the push rod to the equipment. When the push rod was put into use, the driving mechanism was started to drive the second piston 301 to slide in the hydraulic cylinder 3 in the direction close to the oil guide pipe 303, and the hydraulic oil in the hydraulic cylinder 3 was pressed into the casing 2 along the oil guide pipe 303. The hydraulic oil entering the casing 2 pushed the first piston 201 to move in the direction close to the support rod 202, thereby causing the support rod 202 to slide out of the casing 2. At the same time, the outside air entered the hydraulic cylinder 3 along the air inlet pipe 304 and was stored. The driving mechanism was started to drive the second piston 301 to slide in the hydraulic cylinder 3 in the direction away from the oil guide pipe 303, and the casing 2 The hydraulic oil in the hydraulic cylinder 3 enters the hydraulic cylinder 3 along the oil guide pipe 303, and the support rod 202 slides into the sleeve 2. At the same time, the second piston 301 discharges the air in the hydraulic cylinder 3 into the nozzle 5 along the exhaust pipe 305. The nozzle 5 sprays gas on the side wall of the support rod 202 to clean the dust attached to the side wall of the support rod 202. The arrangement of the sleeve 2, the first piston 201, the driving mechanism, the hydraulic cylinder 3 and the second piston 301 facilitates the control of the extension and retraction of the support rod 202. The arrangement of the air inlet pipe 304, the exhaust pipe 305 and the nozzle 5 facilitates the cleaning of the dust attached to the outer wall of the support rod 202 when the support rod 202 is retracted.

[0029] Specifically, the driving mechanism includes a forward and reverse motor 4, the output end of which is fixedly connected to a threaded rod 401, a sleeve 302 is threadedly connected to the threaded rod 401, and one end of the sleeve 302 away from the threaded rod 401 is fixedly connected to the second piston 301. When the forward and reverse motor 4 drives the threaded rod 401 to rotate forward, the threaded rod 401 drives the second piston 301 to slide downward in the hydraulic cylinder 3 through the sleeve 302. When the forward and reverse motor 4 drives the threaded rod 401 to reverse, the threaded rod 401 drives the second piston 301 to slide upward in the hydraulic cylinder 3 through the sleeve 302.

[0030] Specifically, a cleaning brush 501 is fixedly connected to the nozzle 5, and the cleaning brush 501 is in contact with the side wall of the support rod 202. When the support rod 202 slides, the cleaning brush 501 cleans the dust adhered to the outer wall of the support rod 202. The setting of the cleaning brush 501 facilitates increasing the cleaning effect of the nozzle 5 on the support rod 202.

[0031] Specifically, a slot is provided on the sleeve 2 , and the nozzle 5 is connected to the slot by interference fit, and the staff can clean the cleaning brush 501 by removing the nozzle 5 .

[0032] Specifically, one end of the support rod 202 away from the sleeve 2 is threadedly connected to a support plate 203, and anti-slip grooves are provided on the support plate 203. The setting of the support plate 203 is convenient for increasing the supporting effect of the support rod 202, and the setting of the anti-slip grooves is convenient for increasing the friction of the supporting surface of the support plate 203.

[0033] Specifically, the sleeve 302 is threadedly connected with a second sleeve 306, and the second sleeve 306 is provided for threaded connection with the sleeve 302 to increase the compression space; the second sleeve 306 is fixedly connected with the second piston 301 at the bottom, and the threaded rod 401 is provided with a groove 6 at the bottom, and a spring 7 is fixedly connected to the inner wall of the groove 6, and the other end of the spring 7 is fixedly connected with a triangular block 8, and the spring 7 is used for the triangular block 8 to move left and right in the groove 6; the top of the sleeve 302 is provided with a triangular groove 9, and the triangular block 8 is consistent with the shape of the triangular groove 9, and the triangular groove 9 is used for the triangular block 8 to engage with the triangular groove 9 to enable the second sleeve 306 to be threadedly transmitted; the sum of the heights of the threaded rod 401, the sleeve 302, the second sleeve 306 and the second piston 301 is greater than the height of the hydraulic cylinder 3.

[0034] Specifically, the model of the forward and reverse motor 4 is YB2-132S-9, the speed of the forward and reverse motor 4 is 660 revolutions per minute, the maximum oil storage height of the hydraulic oil in the hydraulic cylinder 3 is 550 mm, the radius of the hydraulic cylinder 3 is 400 mm, the radius of the sleeve 2 is 200 mm, and the threaded transmission distance of each rotation of the threaded rod 401, the sleeve 302 and the second sleeve 306 is 1 mm;

[0035] The volume V3 of the hydraulic oil compressed and dropped in the hydraulic cylinder 3 is equal to the volume V2 of the hydraulic oil rising in the casing 2. The maximum oil storage height h3 of the hydraulic oil in the hydraulic cylinder 3 is 550 mm, the radius r3 of the hydraulic cylinder 3 is 400 mm, and the radius r2 of the casing 2 is 200 mm.

[0036] According to the volume formula V = hπr 2 :

[0037] V3=V2

[0038] 550×3.14×4002 =h×3.14×200 2

[0039] h2=2200mm

[0040] The maximum rising height h2 of the hydraulic oil in the sleeve 2 is 2200mm, and h2 is equal to 4 times h3. For every 1mm drop of the hydraulic oil in the hydraulic cylinder 3, the hydraulic oil entering the sleeve 2 rises by 4mm. Since the threaded transmission distance of the threaded rod 401, the sleeve 302 and the second sleeve 306 is 1mm per rotation, and the rotation speed of the forward and reverse motor 4 is 11 revolutions per second, it is concluded that when the forward and reverse motors are started, the hydraulic oil in the hydraulic cylinder 3 is compressed and dropped by the second piston 301 by 11mm per second, and the height of the support rod 202 in the sleeve 2 extending per second is 44mm.

[0041] In the present invention, the arrangement of the sleeve 2, the first piston 201, the driving mechanism, the hydraulic cylinder 3 and the second piston 301 facilitates the control of the extension and retraction of the support rod 202, and the arrangement of the air inlet pipe 304, the exhaust pipe 305 and the nozzle 5 facilitates the cleaning of dust attached to the outer wall of the support rod 202 when the support rod 202 is retracted.

[0042] The working principle of another embodiment of the present invention is as follows: when the push rod is put into use, the forward and reverse motor 4 is started to rotate clockwise, and the sleeve 302 is threaded downward on the threaded rod 401. When the top of the sleeve 302 moves to the bottom of the threaded rod 401, the spring 7 pushes the triangular block 8 into the triangular groove 9 to make the threaded rod 401 engage with the sleeve 302. The sleeve 302 rotates to make the second sleeve 306 threaded downward to drive the second piston 301 to compress downward, and the hydraulic oil in the hydraulic cylinder 3 will be compressed into the sleeve 2 to push the support rod 202 upward. Since the sum of the heights of the threaded rod 401, the sleeve 302, the second sleeve 306 and the second piston 301 is greater than the height of the hydraulic cylinder 3, there is no need to worry that the second sleeve 306 will fall off the sleeve 302.

[0043] When the support rod 202 is to be retracted, the forward and reverse motor 4 is started to rotate counterclockwise. During the reverse rotation of the threaded rod 401, the inclined surface of the triangular block 8 fits with the inclined surface of the triangular groove 9. The inclined surface of the triangular groove 9 will push the triangular block 8 back into the groove 6 so that the sleeve 302 is threaded upward on the threaded rod 401. When the sleeve 302 is transmitted to the top, the threaded rod 401 will drive the sleeve 302 to rotate so that the second sleeve 306 is threaded upward on the sleeve 302 until the second sleeve 306 and the sleeve 302 are contracted together, effectively increasing the compression space and the moving stroke of the push rod.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical hydraulic push rod, comprising a base (1), characterized in that: The base (1) is fixedly connected with a hydraulic cylinder (3) and a sleeve (2); a first piston (201) is slidably connected in the sleeve (2); a support rod (202) is fixedly connected to the first piston (201); a second piston (301) is slidably connected in the hydraulic cylinder (3); a driving mechanism for driving the second piston (301) to slide up and down is connected to the second piston (301); an oil guide is connected between the hydraulic cylinder (3) and the sleeve (2). The hydraulic cylinder (3) is provided with a hydraulic oil, the hydraulic oil is located below the second piston (301), the hydraulic cylinder (3) is provided with an air inlet pipe (304), the sleeve (2) is provided with a nozzle (5), the nozzle end of the nozzle (5) is aimed at the side wall of the support rod (202), an exhaust pipe (305) is connected between the hydraulic cylinder (3) and the nozzle (5), and both the air inlet pipe (304) and the exhaust pipe (305) are provided with a one-way valve.

2. A mechanical hydraulic push rod according to claim 1, characterized in that: The driving mechanism comprises a forward and reverse motor (4), the output end of the forward and reverse motor (4) is fixedly connected to a threaded rod (401), a sleeve (302) is threadedly connected to the threaded rod (401), and one end of the sleeve (302) away from the threaded rod (401) is fixedly connected to the second piston (301).

3. A mechanical hydraulic push rod according to claim 1, characterized in that: A cleaning brush (501) is fixedly connected to the nozzle (5), and the cleaning brush (501) is in contact with the side wall of the support rod (202).

4. A mechanical hydraulic push rod according to claim 3, characterized in that: The sleeve (2) is provided with a slot, and the nozzle (5) is connected to the slot by means of interference fit.

5. A mechanical hydraulic push rod according to claim 4, characterized in that: One end of the support rod (202) away from the sleeve (2) is threadedly connected to a support plate (203), and the support plate (203) is provided with anti-slip grooves.

6. A mechanical hydraulic push rod according to claim 2, characterized in that: The sleeve (302) is threadedly connected to a second sleeve (306), the bottom of the second sleeve (306) is fixedly connected to a second piston (301), the bottom of the threaded rod (401) is provided with a groove (6), the inner wall of the groove (6) is fixedly connected to a spring (7), the other end of the spring (7) is fixedly connected to a triangular block (8), the top of the sleeve (302) is provided with a triangular groove (9), the shape of the triangular block (8) matches that of the triangular groove (9), and the sum of the heights of the threaded rod (401), the sleeve (302), the second sleeve (306) and the second piston (301) is greater than the height of the hydraulic cylinder (3); The forward and reverse motor (4) has a rotation speed of 660 revolutions per minute, the maximum oil storage height of the hydraulic oil in the hydraulic cylinder (3) is 550 mm, the radius of the hydraulic cylinder (3) is 400 mm, the radius of the sleeve (2) is 200 mm, and the thread transmission distance of each rotation of the threaded rod (401), the sleeve (302) and the second sleeve (306) is 1 mm.

Images