Hollow double-acting oil jack
By designing overload protection components and adjustment components in the oil pressure jack, the safety problems of traditional oil pressure jacks are solved under overload, and the controllability of effective leaks and high pistons of hydraulic oil has been achieved. Safety and use efficiency.
Patent Information
- Application Number
- CN202420564749.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-22
AI Technical Summary
Traditional hydraulic jacks may continue to work in overload situations, resulting in equipment damage, oil leakage and even serious safety accidents, and lack effective overload protection devices.
Design a dual -acting oil pressure jack, adopts overload protection components and adjustment components, to achieve one -way exercise and reflux of hydraulic oil by blocking the ball and the drain tract, prevent hydraulic oil leakage, and adjust the large piston through scale and telescopic spring spring. The speed of falling.
Effectively prevent the external seepage of hydraulic oil, enhance the safety of the oil pressure jack, avoid the risk of sudden decline in the large piston, and improve the safety and use efficiency of the equipment.
Smart Images
Figure CN222410852U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of jacks, and more specifically to a hollow double-acting hydraulic jack. Background Art
[0002] Hydraulic jack, also known as hydraulic jack, is a lifting tool that uses a plunger or hydraulic cylinder as a rigid lifting piece. It has a simple structure and is easy to operate, suitable for repair work in a variety of occasions. It is widely used in power maintenance, bridge maintenance, heavy lifting, static pile pressure, foundation settlement, bridge and ship repair and construction, especially in highway and railway construction, machinery adjustment and equipment disassembly.
[0003] In current engineering construction, automobile maintenance and other fields that require heavy lifting, jacks, as an important lifting tool, play an irreplaceable role. Although traditional jacks can lift heavy objects, they still have certain deficiencies in structural design and work efficiency. Safety considerations are crucial. As a lifting tool, hydraulic jacks may encounter various unforeseen factors during work, such as heavy objects exceeding their designed load capacity, operating errors or mechanical failures. If there is no overload protection device, the jack may continue to work under overload conditions, resulting in equipment damage, oil leakage and even serious safety accidents. By setting an overload protection device, it can automatically stop working when the rated load is exceeded, effectively preventing potential safety risks. Utility Model Content
[0004] 1. Technical issues to be solved
[0005] In view of the deficiencies in the prior art, the utility model provides a hollow double-acting hydraulic jack to solve the above-mentioned problems.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hollow double-acting hydraulic jack, comprising a sleeve, the outer surface of the sleeve is fixedly connected to a base, the top of the base is fixedly connected to a column, the outer surface of the column is rotatably connected to a pressure rod, the pressure rod and the other end of the base are rotatably connected to the top of the base through a connecting shaft, the outer surface of the sleeve is fixedly connected to an oil inlet, a large piston is arranged inside the sleeve, and the outer surface of the sleeve is movably connected to a release valve, and further comprises:
[0008] An overload protection component is located inside the casing and below the oil inlet, and is used to control the oil inlet amount of the oil inlet;
[0009] The regulating component is located on the outer surface of the release valve and is used to adjust the release speed of the oil quantity.
[0010] Preferably, the overload protection component includes a blocking ball and a flow guide, the flow guide is fixedly connected to the interior of the sleeve, the blocking ball is movably connected to the interior of the flow guide, and the blocking ball is movably connected to the bottom of the oil inlet.
[0011] Preferably, the upper side and the lower side of the flow guide channel are both open and closed, and are in a shape with a small upper opening, a large middle opening, and a small lower opening.
[0012] Preferably, the adjustment assembly includes a scale and a telescopic spring, the release valve is located inside the sleeve and is fixedly connected to the telescopic spring, the outer surface of the sleeve is fixedly connected to a connecting ring, the outer surface of the connecting ring is provided with a plurality of annular scales equidistantly distributed, and the connecting ring is movably connected to the release valve.
[0013] Preferably, symmetrically distributed oil storage cavities are fixedly connected to the inside of both sides of the sleeve, an oil pipe is fixedly connected to the inside of the sleeve, the large piston is movably connected to the inside of the oil pipe, and the release valve is movably connected to the inside of the oil pipe.
[0014] Preferably, a thermal insulation layer is provided between the oil storage cavity and the outer surface of the thermal insulation layer, and the thermal insulation layer is a thermal insulation material for improving thermal insulation performance.
[0015] Preferably, a small piston is movably connected inside the column, the top of the small piston is fixedly connected to the outer surface of the pressure rod, two pipes are fixedly connected between the sleeve and the base, and balls are movably connected inside the two pipes.
[0016] (III) Beneficial effects
[0017] Compared with the prior art, the utility model provides a hollow double-acting hydraulic jack, which has the following beneficial effects:
[0018] 1. This hollow double-acting hydraulic jack has an overload protection component. The hydraulic oil moves in one direction when entering the casing, thereby pushing the blocking ball to move downward in the guide channel. The bottom port of the guide channel is small, so that the blocking ball moves to the tail of the guide channel to clamp it to prevent the hydraulic oil from leaking. Conversely, when the hydraulic oil is overfull, the hydraulic oil will flow back along the guide channel, thereby pushing the blocking ball to move above the guide channel, so that the blocking ball blocks the upper end of the guide channel to prevent the hydraulic oil from leaking out and enhance the safety of the hydraulic jack.
[0019] 2. This hollow double-acting hydraulic jack controls the speed of the large piston's descent by adjusting the assembly and observing the scale to display the tightness of the telescopic spring on the control release valve, thereby avoiding the danger of the large piston's sudden descent. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the utility model;
[0021] Figure 2 This is a cross-sectional view of the structure of the utility model;
[0022] Figure 3 This is a cross-sectional view of the structure of the utility model;
[0023] Figure 4 This is a schematic diagram of the structure of the overload protection component of the utility model;
[0024] Figure 5 This is a schematic diagram of the structure of the release valve of the utility model.
[0025] In the figure: 1. casing; 2. base; 3. oil inlet; 4. release valve; 5. large piston; 6. pressure rod; 7. cylinder; 8. small piston; 9. sphere; 10. oil pipe; 11. insulation layer; 12. oil storage chamber; 13. blocking ball; 14. flow guide; 15. scale; 16. telescopic spring. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] See also Figure 1-5 , the utility model provides a technical solution:
[0028] A hollow double-acting hydraulic jack includes a sleeve 1, a base 2 is fixedly connected to the outer surface of the sleeve 1, a column 7 is fixedly connected to the top of the base 2, a pressure rod 6 is rotatably connected to the outer surface of the column 7, and the other end of the pressure rod 6 and the base 2 are rotatably connected to the top of the base 2 through a connecting shaft, an oil inlet 3 is fixedly connected to the outer surface of the sleeve 1, and a large piston 5 is arranged inside the sleeve 1. It is characterized in that a release valve 4 is movably connected to the outer surface of the sleeve 1, and further includes:
[0029] An overload protection component, which is located inside the sleeve 1 and below the oil inlet 3, and is used to control the oil inlet amount of the oil inlet 3;
[0030] The regulating component is located on the outer surface of the release valve 4 and is used to adjust the speed of oil release. The hydraulic oil is poured into the oil inlet 3, and then flows into the sleeve 1 through the guide channel 14. The pressure rod 6 is pulled upward so that the pressure rod 6 lifts the small piston 8 in the column 7 upward. During the upward movement of the column 7, the hydraulic oil will enter the column 7 through the inlet channel. At this time, the ball 9 allows the hydraulic oil to pass through. When the pressure rod 6 is pressed down, it will pressurize the hydraulic oil in the column 7 and press the small ball back into the sleeve 1. The hydraulic oil enters the oil pipe 10 along the channel, and then the hydraulic oil lifts the large piston 5. The reciprocating operation can complete the jacking work.
[0031] Furthermore, the overload protection component includes a blocking ball 13 and a guide channel 14. The guide channel 14 is fixedly connected to the inside of the sleeve 1, and the blocking ball 13 is movably connected to the inside of the guide channel 14. The blocking ball 13 is movably connected to the bottom of the oil inlet 3. The hydraulic oil moves in one direction during the process of entering the sleeve 1, thereby pushing the blocking ball 13 to move downward in the guide channel 14. The bottom port of the guide channel 14 is small, so that the blocking ball 13 is moved to the tail of the guide channel 14 to clamp it to prevent the hydraulic oil from leaking.
[0032] Furthermore, the upper side and the lower side of the flow guide channel 14 are both open and closed, and are in a shape with a small upper opening, a large middle opening, and a small lower opening, so that the blocking ball 13 can move in the flow guide channel 14 .
[0033] Furthermore, the adjustment component includes a scale 15 and a telescopic spring 16. The release valve 4 is located inside the sleeve 1 and is fixedly connected to the telescopic spring 16. The outer surface of the sleeve 1 is fixedly connected to a connecting ring. The outer surface of the connecting ring is provided with a plurality of annular scales 15 equidistantly distributed. The connecting ring and the release valve 4 are movably connected. The tightness of the telescopic spring 16 on the release valve 4 can be displayed by observing the scale 15, thereby controlling the descending speed of the release piston 5.
[0034] Furthermore, symmetrically distributed oil storage chambers 12 are fixedly connected to the inside of both sides of the casing 1, an oil pipe 10 is fixedly connected to the inside of the casing 1, the large piston 5 is movably connected to the inside of the oil pipe 10, the release valve 4 is movably connected to the inside of the oil pipe 10, the hydraulic oil enters the oil pipe 10 along the channel, and then the hydraulic oil lifts the large piston 5, and the reciprocating operation can complete the jacking work.
[0035] Furthermore, a heat-insulating layer 11 is provided between the oil storage cavity 12 and the outer surface of the heat-insulating layer 11 . The heat-insulating layer 11 is a heat-insulating material used to improve the heat-insulating performance. The provision of the heat-insulating layer 11 can improve the heat-insulating performance.
[0036] Furthermore, a small piston 8 is movably connected inside the column 7, and the top of the small piston 8 is fixedly connected to the outer surface of the pressure rod 6. Two pipes are fixedly connected between the sleeve 1 and the base 2. The insides of the two pipes are movably connected with a ball 9. The hydraulic oil will enter the column 7 through the inlet channel, and the ball 9 allows the hydraulic oil to pass through.
[0037] Working principle: When the staff needs to use the hollow double-acting hydraulic jack, first pour the hydraulic oil into the oil inlet 3, then flow into the casing 1 through the guide channel 14, pull the pressure rod 6 upward so that the pressure rod 6 lifts the small piston 8 in the column 7 upward, and the hydraulic oil will enter the column 7 through the inlet channel during the upward movement of the column 7. At this time, the ball 9 allows the hydraulic oil to pass through. When the pressure rod 6 is pressed down, it will pressurize the hydraulic oil in the column 7, press the small ball back into the casing 1, and the hydraulic oil will enter the oil pipe 10 along the channel. Then the hydraulic oil lifts the large piston 5. The reciprocating operation can complete the jacking work. When the jacking work is completed, the release valve 4 can be rotated to allow the hydraulic oil to flow into the storage along the channel. In the oil chamber 12, the tightness of the telescopic spring 16 on the control release valve 4 can be displayed by observing the scale 15, thereby controlling the descending speed of the release piston 5. The hydraulic oil moves in one direction during the process of entering the sleeve 1, thereby pushing the blocking ball 13 to move downward in the guide channel 14. The bottom port of the guide channel 14 is small, so that the blocking ball 13 is moved to the tail of the guide channel 14 to clamp it to prevent the hydraulic oil from leaking. On the contrary, when the hydraulic oil is overfull, the hydraulic oil will flow back along the guide channel 14, thereby pushing the blocking ball 13 to move above the guide channel 14, so that the blocking ball 13 blocks the upper end of the guide channel 14 to prevent the hydraulic oil from leaking out. The setting of the insulation layer 11 can improve the thermal insulation performance.
[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A hollow double-acting hydraulic jack, comprising a sleeve (1), the outer surface of the sleeve (1) is fixedly connected to a base (2), the top of the base (2) is fixedly connected to a column (7), the outer surface of the column (7) is rotatably connected to a pressure rod (6), the other end of the pressure rod (6) and the base (2) are rotatably connected to the top of the base (2) through a connecting shaft, the outer surface of the sleeve (1) is fixedly connected to an oil inlet (3), and a large piston (5) is provided inside the sleeve (1), characterized in that: The outer surface of the sleeve (1) is movably connected with a release valve (4), and further comprises: An overload protection component, which is located inside the sleeve (1) and below the oil inlet (3) and is used to control the oil inlet amount of the oil inlet (3); The regulating component is located on the outer surface of the release valve (4) and is used to adjust the speed of oil release.
2. A hollow double-acting hydraulic jack according to claim 1, characterized in that: The overload protection component comprises a blocking ball (13) and a flow guide (14); the flow guide (14) is fixedly connected to the interior of the sleeve (1); the blocking ball (13) is movably connected to the interior of the flow guide (14); and the blocking ball (13) is movably connected to the bottom of the oil inlet (3).
3. A hollow double-acting hydraulic jack according to claim 2, characterized in that: The upper side and the lower side of the flow guide channel (14) are both in an open and closed shape, and are in a shape with a small upper opening and a large middle opening and a small lower opening.
4. A hollow double-acting hydraulic jack according to claim 1, characterized in that: The adjustment component comprises a scale (15) and a telescopic spring (16); the release valve (4) is located inside the sleeve (1) and is fixedly connected to the telescopic spring (16); the outer surface of the sleeve (1) is fixedly connected to a connecting ring; the outer surface of the connecting ring is provided with a plurality of scales (15) equidistantly distributed in annular shapes; the connecting ring is movably sleeved with the release valve (4).
5. The hollow double-acting hydraulic jack according to claim 1, characterized in that: The inside of both sides of the sleeve (1) are fixedly connected with symmetrically distributed oil storage chambers (12), the inside of the sleeve (1) is fixedly connected with an oil pipe (10), the large piston (5) is movably connected to the inside of the oil pipe (10), and the release valve (4) is movably connected to the inside of the oil pipe (10).
6. A hollow double-acting hydraulic jack according to claim 5, characterized in that: A thermal insulation layer (11) is provided between the oil storage cavity (12) and the outer surface of the thermal insulation layer (11); the thermal insulation layer (11) is a thermal insulation material used to improve thermal insulation performance.
7. The hollow double-acting hydraulic jack according to claim 1, characterized in that: A small piston (8) is movably connected inside the column (7), and the top of the small piston (8) is fixedly connected to the outer surface of the pressure rod (6). Two pipes are fixedly connected between the sleeve (1) and the base (2), and balls (9) are movably connected inside the two pipes.