Double-section vertical hydraulic jack

Abstract

The utility model discloses a double-section vertical hydraulic jack which comprises a shell, an ejector rod cavity, an outer sleeve ejector rod, a first limiting edge covering ring, a first positioning locking screw, an inner rod cavity, an inner ejector rod, a second limiting edge covering ring, a second positioning locking screw, a rubber sealing sleeve, an oil return pipeline, a hydraulic oil inlet pipeline, an oil storage cavity, a piston connecting rod cavity, an oil guide pipeline and a telescopic support bottom plate. According to the lifting jack, the inner ejector rod is matched with the outer sleeve ejector rod to conduct two-section type rapid lifting, on the premise that the lifting height of an automobile chassis is guaranteed, the overall height of the jack is low, the jack is convenient to carry and store, and meanwhile the telescopic supporting bottom plate is arranged around the bottom of the shell to improve the supporting stability of the jack; and base instability caused by too high jack supporting height is avoided, and the supporting stability of the jack is improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of jacks, in particular to the technical field of double-section vertical hydraulic jacks. [Background technology]

[0002] A hydraulic jack is a jack that uses a plunger or hydraulic cylinder as a rigid lifting member. It has the characteristics of compact structure, stable operation, strong lifting force, and self-locking. The hydraulic jack has a strong lifting capacity. The working principle of the hydraulic jack is to use oil as the working medium, transmit movement through the change of the sealed volume, and transmit power through the internal pressure of the oil, driving the top support seat to lift and lower the heavy objects. Jacks are often used in car maintenance. Since the chassis of general cars is relatively low, the placement and operation space of the jack is limited, and the maintenance operation has certain requirements for the lifting height of the car chassis. Conventional jack structures, under the premise of ensuring the lifting height of the car chassis, are often too high in overall height and are difficult to adapt to the low chassis design of the car. [Contents of the utility model]

[0003] The purpose of the utility model is to solve the problems in the prior art and propose a double-section vertical hydraulic jack, which can perform two-stage rapid lifting and lowering through the cooperation of an inner push rod and an outer push rod. On the premise of ensuring the height of the automobile chassis being raised, the overall height of the jack is relatively low, which is convenient for carrying and storing the jack. At the same time, telescopic supporting plates are arranged around the bottom of the shell to improve the supporting stability of the jack, avoid the instability of the base caused by the jack's supporting height being too high, and improve the supporting stability of the jack.

[0004] To achieve the above-mentioned purpose, the utility model proposes a double-section vertical hydraulic jack, including a shell, a push rod cavity, an outer sleeve push rod, a first limit edge ring, a first positioning locking screw, an inner rod cavity, an inner push rod, a second limit edge ring, a second positioning locking screw, a rubber sealing sleeve, an oil return pipeline, a hydraulic oil inlet pipeline, an oil storage cavity, a piston connecting rod cavity, an oil guide pipeline and a telescopic support bottom plate. The shell is provided with a push rod cavity opening vertically upward, and an outer sleeve push rod is slidably installed in the push rod cavity. The top opening position ring of the push rod cavity is provided with a first limit edge ring, and the first limit edge ring is provided with a plurality of first positioning locking screws corresponding to the side positions of the outer sleeve push rod. The inner axial penetration of the outer sleeve push rod An inner rod cavity is provided through it, and an inner push rod is slidably installed in the inner rod cavity, and a second limiting edging ring is provided around the top opening position of the inner rod cavity, and a plurality of second positioning locking screws are provided on the second limiting edging ring corresponding to the side positions of the inner push rod, and a rubber sealing sleeve is fixedly provided on the lower part of the outer side surface of the outer sleeve push rod and the lower part of the outer side surface of the inner push rod, and an oil return pipe and a hydraulic oil inlet pipe are respectively connected to the bottom of the push rod cavity, and the oil return pipe is connected to the oil storage cavity, and the oil storage cavity is arranged inside the shell, and the hydraulic oil inlet pipe is connected to the piston connecting rod cavity, and the piston connecting rod cavity is connected to the oil storage cavity through an oil guide pipe, and a plurality of telescopic supporting plates are evenly arranged around the bottom of the shell.

[0005] Preferably, a throttle valve is provided in the oil return pipeline, and one-way check valves are provided in both the hydraulic oil inlet pipeline and the oil guide pipeline.

[0006] Preferably, the housing, push rod cavity, oil return pipeline, hydraulic oil inlet pipeline, oil storage cavity, piston connecting rod cavity and oil guide pipeline are an integrated structure.

[0007] Preferably, the outer side surfaces of the outer sleeve push rod and the inner sleeve push rod are both rough surfaces, the first positioning locking screw is in conflict with the outer side surface of the outer sleeve push rod, and the second positioning locking screw is in conflict with the outer side surface of the inner sleeve push rod.

[0008] Preferably, a top supporting plate is detachably provided on the top end of the inner push rod.

[0009] The beneficial effects of the utility model: the utility model combines a shell, a push rod cavity, an outer sleeve push rod, a first limit edge ring, a first positioning locking screw, an inner rod cavity, an inner push rod, a second limit edge ring, a second positioning locking screw, a rubber sealing sleeve, an oil return pipe, a hydraulic oil inlet pipe, an oil storage chamber, a piston connecting rod cavity, an oil guide pipe and a telescopic support plate together, and after experimental optimization, it can perform two-stage rapid lifting and lowering through the cooperation of the inner push rod with the outer sleeve push rod. On the premise of ensuring the lifting height of the automobile chassis, the overall height of the jack is low, which is convenient for carrying and storing the jack. At the same time, telescopic support plates are arranged around the bottom of the shell to improve the supporting stability of the jack, avoid instability of the base caused by excessive support height of the jack, and improve the supporting stability of the jack.

[0010] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0011] Figure 1 The utility model is a structural schematic diagram of a double-section vertical hydraulic jack.

[0012] In the figure: 1-housing, 2-rod cavity, 3-jacket rod, 4-first limiting edging ring, 5-first positioning locking screw, 6-inner rod cavity, 7-inner push rod, 8-second limiting edging ring, 9-second positioning locking screw, 10-rubber sealing sleeve, 11-return oil pipeline, 12-hydraulic oil inlet pipeline, 13-oil storage chamber, 14-piston connecting rod chamber, 15-oil guide pipeline, 16-telescopic support bottom plate. [Specific implementation method]

[0013] See also Figure 1The utility model double-section vertical hydraulic jack includes a housing 1, a push rod cavity 2, a jacket push rod 3, a first limit edge ring 4, a first positioning locking screw 5, an inner rod cavity 6, an inner push rod 7, a second limit edge ring 8, a second positioning locking screw 9, a rubber sealing sleeve 10, an oil return pipeline 11, a hydraulic oil inlet pipeline 12, an oil storage cavity 13, a piston connecting rod cavity 14, an oil guide pipeline 15 and a telescopic bottom plate 16. The housing 1 is provided with a push rod cavity 2 with an opening vertically upward, and a jacket push rod 3 is slidably installed in the push rod cavity 2. The top opening position of the push rod cavity 2 is ringed with a first limiting edging ring 4, and the first limiting edging ring 4 is provided with a plurality of first positioning locking screws 5 corresponding to the side positions of the outer sleeve push rod 3. The inner axial portion of the outer sleeve push rod 3 is provided with an inner rod cavity 6, and an inner push rod 7 is slidably installed in the inner rod cavity 6. The top opening position of the inner rod cavity 6 is ringed with a second limiting edging ring 8, and the second limiting edging ring 8 is provided with a plurality of second positioning locking screws 9 corresponding to the side positions of the inner push rod 7. The lower part of the outer side surface of the outer sleeve push rod 3 and A rubber sealing sleeve 10 is fixedly arranged at the lower part of the outer side surface of the inner push rod 7. The bottom of the push rod cavity 2 is connected with an oil return pipeline 11 and a hydraulic oil inlet pipeline 12. The oil return pipeline 11 is connected to an oil storage cavity 13. The oil storage cavity 13 is arranged inside the housing 1. The hydraulic oil inlet pipeline 12 is connected to a piston connecting rod cavity 14. The piston connecting rod cavity 14 is connected to the oil storage cavity 13 through an oil guide pipeline 15. A plurality of telescopic bottom support plates 16 are evenly arranged around the bottom of the housing 1. The oil return pipeline 11 is provided with Throttle valve, one-way check valves are arranged in the hydraulic oil inlet pipeline 12 and the oil guide pipeline 15, the housing 1, the push rod cavity 2, the return oil pipeline 11, the hydraulic oil inlet pipeline 12, the oil storage cavity 13, the piston connecting rod cavity 14 and the oil guide pipeline 15 are an integrated structure, the outer side surfaces of the outer sleeve push rod 3 and the inner push rod 7 are both rough surfaces, the first positioning locking screw 5 conflicts with the outer side surface of the outer sleeve push rod 3, the second positioning locking screw 9 conflicts with the outer side surface of the inner push rod 7, and the top end of the inner push rod 7 is detachably provided with a support plate.

[0014] The utility model combines a shell body 1, a push rod cavity 2, an outer sleeve push rod 3, a first limit edge ring 4, a first positioning locking screw 5, an inner rod cavity 6, an inner push rod 7, a second limit edge ring 8, a second positioning locking screw 9, a rubber sealing sleeve 10, an oil return pipeline 11, a hydraulic oil inlet pipeline 12, an oil storage cavity 13, a piston connecting rod cavity 14, an oil guide pipeline 15 and a telescopic bottom support plate 16 together, and after experimental optimization, it can perform two-stage rapid lifting and lowering through the inner push rod 7 and the outer sleeve push rod 3. Under the premise of ensuring the height of the automobile chassis being lifted, the overall height of the jack is relatively low, which is convenient for carrying and storing the jack. At the same time, telescopic bottom support plates 16 are arranged around the bottom of the shell body 1 to improve the support stability of the jack, avoid the instability of the base caused by the excessively high support height of the jack, and improve the support stability of the jack.

[0015] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. Double-section vertical hydraulic jack, characterized by: The invention comprises a housing (1), a push rod cavity (2), an outer sleeve push rod (3), a first limiting edging ring (4), a first positioning locking screw (5), an inner rod cavity (6), an inner push rod (7), a second limiting edging ring (8), a second positioning locking screw (9), a rubber sealing sleeve (10), an oil return pipeline (11), a hydraulic oil inlet pipeline (12), an oil storage cavity (13), a piston connecting rod cavity (14), an oil guide pipeline (15) and a telescopic bottom plate (16). The housing (1) is provided with a push rod cavity (2) with an opening vertically upward, an outer sleeve push rod (3) is slidably installed in the push rod cavity (2), a first limiting edging ring (4) is provided around the top opening position of the push rod cavity (2), a plurality of first positioning locking screws (5) are provided on the first limiting edging ring (4) at positions corresponding to the side positions of the outer sleeve push rod (3), an inner rod cavity (6) is axially penetrated inside the outer sleeve push rod (3), and the inner rod cavity (6) is provided inside the outer sleeve push rod (3). An inner push rod (7) is slidably installed in the cavity (6); a second limiting edging ring (8) is provided around the top opening position of the inner rod cavity (6); a plurality of second positioning locking screws (9) are provided on the second limiting edging ring (8) at positions corresponding to the side positions of the inner push rod (7); a rubber sealing sleeve (10) is fixedly provided on the lower portion of the outer side surface of the outer sleeve push rod (3) and the lower portion of the outer side surface of the inner push rod (7); an oil return pipe (11) and a hydraulic oil inlet pipe (12) are respectively connected at the bottom of the push rod cavity (2); the oil return pipe (11) is connected to an oil storage cavity (13); the oil storage cavity (13) is provided inside the housing (1); the hydraulic oil inlet pipe (12) is connected to a piston connecting rod cavity (14); the piston connecting rod cavity (14) is connected to the oil storage cavity (13) via an oil guide pipe (15); and a plurality of telescopic bottom support plates (16) are evenly provided around the bottom of the housing (1).

2. The double-section vertical hydraulic jack according to claim 1, characterized in that: A throttle valve is provided in the oil return pipeline (11), and one-way check valves are provided in the hydraulic oil inlet pipeline (12) and the oil guide pipeline (15).

3. The double-section vertical hydraulic jack according to claim 1, characterized in that: The housing (1), the push rod chamber (2), the oil return pipeline (11), the hydraulic oil inlet pipeline (12), the oil storage chamber (13), the piston connecting rod chamber (14) and the oil guide pipeline (15) are an integrated structure.

4. The double-section vertical hydraulic jack according to claim 1, characterized in that: The outer side surfaces of the outer sleeve push rod (3) and the inner sleeve push rod (7) are both rough surfaces; the first positioning locking screw (5) abuts against the outer side surface of the outer sleeve push rod (3); and the second positioning locking screw (9) abuts against the outer side surface of the inner sleeve push rod (7).

5. The double-section vertical hydraulic jack according to claim 1, characterized in that: The top end of the inner push rod (7) is detachably provided with a top supporting plate.

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