External mechanical range-extending type oil cylinder jacking device with locking nut

Abstract

The utility model discloses an external mechanical extended-range oil cylinder jacking device with a locking nut, which belongs to the technical field of oil cylinder jacking, and is characterized by comprising an extended-range oil cylinder body, the outer side of the extended-range oil cylinder body is movably connected with a sealing and lubricating mechanism, and the outer side of the extended-range oil cylinder body is movably connected with the locking nut. The top of the range extending type oil cylinder body is movably connected with a quick press-fit mechanism, the quick press-fit mechanism is arranged at the top of the sealing lubricating mechanism, the lubricating function can be effectively achieved, and when a piston rod of the compensation oil-saving cylinder ascends and shakes, a rubber ring is extruded through a ball to enable lubricating oil to seep out and be attached to the piston rod of the compensation oil-saving cylinder. According to the lifting device, the friction resistance is reduced, the abrasion of parts is reduced, the lifting operation can be smoothly carried out, the sealing performance is reliably ensured, a good sealing state can still be maintained even under the conditions of ball movement and lubricating oil seepage, the problems of oil leakage and the like are prevented, and the efficient, safe and stable operation of the whole lifting operation can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil cylinder jacking, especially relates to an external mechanical range extending type oil cylinder jacking device with locking nuts. BACKGROUND

[0002] In traditional engineering machinery equipment, the power source of the oil cylinder is mostly driven by a single energy source. With the increasing requirements of engineering operations on the performance of the equipment, the traditional oil cylinder has many limitations. For example, in some complex working conditions, such as large-scale construction and mining, there are strict requirements on the output force stability, response speed, and energy utilization efficiency of the oil cylinder. However, the conventional oil cylinder may not be able to quickly adjust to different loads due to the fixed power supply mode, resulting in low work efficiency and high energy consumption. At the same time, the problems of oil leakage and component wear in the traditional hydraulic system also affect the reliability and service life of the equipment. Therefore, the mechanical range extending type oil cylinder body technology is developed to solve these problems. Through innovative structural design and power coupling mode, multiple energy inputs or optimized power transmission paths are integrated, so that the oil cylinder can flexibly allocate power according to the actual working conditions, improve the overall performance, reduce the operating cost, and provide strong support for the efficient and stable operation of modern engineering machinery equipment.

[0003] In the prior art, the hydraulic oil cylinder jacking device can provide sufficient support force to the lifting rod through the support device to prevent the lifting rod from deforming too early and increase the service life of the hydraulic jacking cylinder. However, the device is prone to oil leakage outside the hydraulic cylinder during use, which reduces its applicability during use.

[0004] To solve the above problems, the existing patent (publication number: CN220956268U) proposes an external mechanical range extending type oil cylinder jacking device with locking nuts. The cylinder bottom is provided with a cylinder barrel on the outer side. The cylinder bottom is provided with a hydraulic pump on the side away from the cylinder barrel. The inside of the cylinder barrel is provided with a piston body. The piston body is provided with a compensation oil saving cylinder piston rod on the side away from the cylinder bottom. The cylinder barrel is provided with a sealing structure on the end away from the cylinder bottom. The sealing structure includes a cylinder cover, a sealing ring, and a fixing bolt. The cylinder cover is arranged on one side of the cylinder barrel. The utility model is provided with a sealing structure. The cylinder cover is placed on one side of the cylinder barrel. The fixing bolt is rotated to fix the cylinder cover and the cylinder barrel. Under the action of the sealing ring, the sealing function is realized, thereby improving the applicability of the external mechanical range extending type oil cylinder body jacking device during use.

[0005] In view of the above problems, the existing patent provides a solution, but the above examples mainly realize the sealing effect of the range extending oil cylinder body through the cylinder cover, the sealing ring and the fixing bolt, but the cylinder cover may be damaged in long-term use, the sealing effect of the sealing ring may be reduced, and the fixing bolt may be loose, the sealing structure is not convenient to replace, which leads to reduced sealing effect in long-term use and potential safety hazards, and the compensation oil saving cylinder piston rod may be easily shaken due to increased friction during long-term use, which cannot be lubricated in time and leads to potential safety hazards.

[0006] Therefore, an external mechanical range extending cylinder jacking device with a locking nut is provided. Content of the utility model

[0007] The utility model discloses a kind of external mechanical range extending cylinder jacking devices with locking nut, can solve the problem that sealing effect reduces in long-term use of existing sealing structure, and sealing structure is difficult to replace and compensation oil saving cylinder piston rod is not lubricated in time due to increased friction in long-term use.

[0008] To achieve the above object, the utility model provides the following technical scheme: an external mechanical range extending cylinder jacking device with a locking nut, including range extending cylinder body, the outer side of the range extending cylinder body is movably connected with sealing lubricating mechanism, the top of the range extending cylinder body is movably connected with quick compression mechanism, the quick compression mechanism is set at the top of sealing lubricating mechanism.

[0009] The sealing lubricating mechanism includes sealing box, sealing ring, sealing groove and extrusion lubricating assembly, the sealing box is movably connected at the outer side of the range extending cylinder body, the sealing ring is fixedly connected at the bottom of sealing box, the sealing groove is set at the outer side of the range extending cylinder body, the sealing ring is movably connected at the inner side of sealing groove, and the extrusion lubricating assembly 24 is movably connected at the inner side of sealing box.

[0010] Preferably, the quick compression mechanism includes piston limiting top plate, compression plate, multi-stage telescopic strut, compression spring, elastic soft clamping block, rotating rod, linkage block and electric telescopic rod.

[0011] Preferably, the piston limiting top plate is movably connected at the top of the range extending cylinder body, the multi-stage telescopic strut is fixedly connected at the bottom of piston limiting top plate, the compression plate is fixedly connected at the bottom of multi-stage telescopic strut, and the compression plate is set at the top of sealing box.

[0012] Preferably, the elastic soft clamp block is slidingly connected to the left side of the bottom of the piston limiting top plate, the linkage block is slidingly connected to the right side of the bottom of the piston limiting top plate, the rotating rod is rotatably connected to the outer side of the elastic soft clamp block and the linkage block, the electric telescopic rod is fixedly connected to the right side of the linkage block, and the electric telescopic rod is fixedly connected to the outer side of the piston limiting top plate.

[0013] Preferably, the extrusion lubricating assembly comprises a rubber ring, an extrusion ring, an oil leakage hole, an elastic fixing block and a ball.

[0014] Preferably, the rubber ring is movably connected to the inner side of the sealing box, the extrusion ring is fixedly connected to the outer side of the rubber ring, the extrusion ring is arranged on the inner side of the sealing box, the elastic fixing block is movably connected to the inner side of the extrusion ring, the ball is movably connected to the outer side of the elastic fixing block, the ball is arranged on the inner side of the extrusion ring, and the oil leakage hole is arranged on the outer side of the ball.

[0015] Preferably, the outer sides of the piston limiting top plate and the range extender cylinder body are movably connected with positioning magnetic absorbers.

[0016] Preferably, the top of the positioning magnetic absorber is movably connected with a bearing plate, and the top of the bearing plate is movably connected with an antiskid pad.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The sealing lubricating mechanism can effectively realize the lubricating function, and when the compensation oil saving cylinder piston rod shakes upward, the lubricating oil is exuded and attached to the compensation oil saving cylinder piston rod through the extrusion of the ball on the rubber ring, so as to reduce the frictional resistance and the wear of parts, facilitate smooth lifting operation, reliably ensure the sealing performance, maintain a good sealing state even in the case of ball movement and lubricating oil exudation, prevent oil leakage and other problems, effectively reduce the lifting operation safety hazards caused by lubrication and sealing problems, and ensure the efficient and safe and stable operation of the whole lifting operation.

[0019] 2. The quick pressing mechanism can quickly complete the installation of the sealing box through a series of operations such as pressing the sealing box, clamping the sealing ring and clamping back the piston limiting top plate, saves the installation time and improves the work efficiency, and in the clamping process, the cooperation of the pressing plate, the multi-stage telescopic support and the compression spring enables the sealing box to be firmly installed at the contact end of the compensation oil saving cylinder piston rod and the cylinder body lifting part, thereby ensuring the stability of the sealing box installation, ensuring that the sealing and lubricating functions can effectively play in the lifting operation process, and reducing the risks caused by the loosening of the sealing box. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1The utility model discloses an external mechanical range extending type oil cylinder body jacking device with locking nut's overall structural diagram.

[0021] Figure 2 The utility model discloses range extending type oil cylinder's overall structural diagram.

[0022] Figure 3 The utility model discloses sealing lubrication mechanism's overall structural diagram.

[0023] Figure 4 The utility model discloses extruding lubricating assembly's overall structural diagram.

[0024] Figure 5 The utility model discloses quick pressing mechanism's overall structural diagram.

[0025] In the drawing, 1, range extending type oil cylinder body;2, sealing lubrication mechanism;21, sealing box;22, sealing ring;23, sealing groove;24, extruding lubricating assembly;24a, rubber ring;24b, extruding ring;24c, oil leakage hole;24d, elastic fixed block;24e, ball;3, quick pressing mechanism;31, piston limiting roof board;32, pressing board;33, multistage telescopic support;34, compression spring;35, elastic soft clamping block;36, rotating rod;37, linkage block;38, electric telescopic rod;4, positioning magnetic attraction;5, bearing plate;6, antiskid pad. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1-5 The utility model provides technical scheme:

[0028] An external mechanical range extending type oil cylinder jacking device with locking nut, comprising a range extending type oil cylinder body 1, a sealing lubrication mechanism 2 movably connected to the outer side of the range extending type oil cylinder body 1, a quick pressing mechanism 3 movably connected to the top of the range extending type oil cylinder body 1, and the quick pressing mechanism 3 is arranged at the top of the sealing lubrication mechanism 2.

[0029] The sealing and lubricating mechanism 2 comprises a sealing box 21, a sealing ring 22, a sealing groove 23 and an extrusion lubricating assembly 24. The sealing box 21 is movably connected to the outer side of the range-extending oil cylinder body 1. The sealing ring 22 is fixedly connected to the bottom of the sealing box 21. The sealing groove 23 is arranged on the outer side of the range-extending oil cylinder body 1. The sealing ring 22 is movably connected to the inner side of the sealing groove 23. The extrusion lubricating assembly 24 is movably connected to the inner side of the sealing box 21.

[0030] In the embodiment, the range-extending oil cylinder body 1 is used for mechanical range extension lifting operation. The range-extending oil cylinder body 1 comprises a compensation oil-saving cylinder oil inlet A, a compensation oil-saving cylinder bottom, a compensation oil-saving cylinder piston, a compensation oil-saving cylinder barrel, a compensation oil-saving cylinder oil inlet B, a compensation oil-saving cylinder cover, a compensation oil-saving cylinder piston rod, a compensation oil-saving cylinder piston locking nut, a mechanical range extension threaded rod body, a mechanical range extension threaded rod body wrench positioning, a compensation oil-saving cylinder piston rod internal mechanical range extension thread, a rod cavity and a rodless cavity. The sealing box 21 is arranged on the outer side of the range-extending oil cylinder body 1, and the sealing box 21 is preliminarily installed by being clamped into the sealing groove 23 through the sealing ring 22. The extrusion lubricating assembly 24 is used for timely lubrication of the compensation oil-saving cylinder piston rod during lifting of the compensation oil-saving cylinder piston rod, so as to prevent safety hazards.

[0031] Specifically, as shown in Figure 1 , Figure 2 , Figure 5 , the quick pressing mechanism 3 comprises a piston limiting top plate 31, a pressing plate 32, a multi-stage telescopic support 33, a compression spring 34, an elastic soft clamping block 35, a rotating rod 36, a linkage block 37 and an electric telescopic rod 38.

[0032] Specifically, as shown in Figure 1 , Figure 2 , Figure 5 , the piston limiting top plate 31 is movably connected to the top of the range-extending oil cylinder body 1. The multi-stage telescopic support 33 is fixedly connected to the bottom of the piston limiting top plate 31. The pressing plate 32 is fixedly connected to the bottom of the multi-stage telescopic support 33. The pressing plate 32 is arranged on the top of the sealing box 21.

[0033] Specifically, as shown in Figure 1 , Figure 2 , Figure 5 , the elastic soft clamping block 35 is slidably connected to the left side of the bottom of the piston limiting top plate 31. The linkage block 37 is slidably connected to the right side of the bottom of the piston limiting top plate 31. The rotating rod 36 is rotatably connected to the outer sides of the elastic soft clamping block 35 and the linkage block 37. The electric telescopic rod 38 is fixedly connected to the right side of the linkage block 37. The electric telescopic rod 38 is fixedly connected to the outer side of the piston limiting top plate 31.

[0034] In the embodiment, the piston limiting top plate 31 is clamped back to compensate for the original position of the oil saving cylinder piston rod top, and the pressing plate 32 is pressed against the top of the sealing box 21 when clamped. At this time, the multi-stage telescopic support 33 and the inner side compression spring 34 between the pressing plate 32 and the piston limiting top plate 31 are taut, and the piston limiting top plate 31 is fixed on the top of the piston limiting top plate 31. After that, the electric telescopic rod 38 is started to drive the connecting block 37 to slide along the top of the piston limiting top plate 31, pull the rotating rod 36 to make the elastic soft clamp block 35 clamp the outer side of the piston limiting top plate 31 inward, and complete the installation of the sealing box 21 and the piston limiting top plate 31.

[0035] Specifically, as shown in Figure 1 、 Figure 2 , the extrusion lubricating assembly 24 includes a rubber ring 24a, an extrusion ring 24b, an oil leakage hole 24c, an elastic fixing block 24d and a ball 24e.

[0036] Specifically, as shown in Figure 5 、 Figure 3 , the rubber ring 24a is movably connected to the inner side of the sealing box 21, the extrusion ring 24b is fixedly connected to the outer side of the rubber ring 24a, the extrusion ring 24b is arranged on the inner side of the sealing box 21, the elastic fixing block 24d is movably connected to the inner side of the extrusion ring 24b, the ball 24e is movably connected to the outer side of the elastic fixing block 24d, the ball 24e is arranged on the inner side of the extrusion ring 24b, and the oil leakage hole 24c is arranged on the outer side of the extrusion ring 24b and the rubber ring 24a. The oil leakage hole 24c is arranged on the outer side of the ball 24e.

[0037] In the embodiment, when the compensation oil saving cylinder piston rod rises and shakes, it will extrude the ball 24e in the sealing box 21 on the outer side of the cylinder contact point, the ball 24e will roll in the elastic fixing block 24d and extrude the extrusion ring 24b, and then extrude the rubber ring 24a in the sealing box 21. The rubber ring 24a is an elastic hollow storage body and stores lubricating oil. When the ball 24e is extruded, the shape of the oil leakage hole 24c between the rubber ring 24a and the extrusion ring 24b changes, and the ball 24e is no longer blocked. The lubricating oil leaks outward and adheres to the ball 24e and is applied to the outer side of the piston limiting top plate 31 to achieve lubrication. The inner side of the sealing box 21 can ensure sealing, which can avoid the risk of lifting caused by high friction and poor sealing.

[0038] Specifically, as shown in Figure 4 、 Figure 3 , the outer sides of the piston limiting top plate 31 and the range increasing type oil cylinder body 1 are movably connected with the positioning magnetic attraction 4.

[0039] Specifically, as shown in Figure 4 、 Figure 1 Figure 2 Figure 1 Figure 2 , the top of the positioning magnetic attraction 4 is movably connected with the bearing plate 5, and the top of the bearing plate 5 is movably connected with the anti-skid pad 6.

[0040] In this embodiment: when it is necessary to increase the bearing surface, the bearing plate 5 can be installed by positioning magnetic suction 4 to increase the support surface, and the friction between the lifting and the object being lifted can be increased by setting anti-slip pads 6.

[0041] Working Principle: In situations requiring significant lifting force and adjustable lifting stroke, a range-extender cylinder body 1 can be used for lifting operations. The range-extender cylinder body 1, through the oil inlet A and oil inlet B of the compensating cylinder, raises and lowers the piston inside the compensating cylinder barrel and its top piston rod. Simultaneously, the compensating cylinder head limits its movement. Once the maximum lifting distance is reached, the mechanically extended threaded rod is rotated, moving within the mechanically extended thread inside the compensating cylinder piston rod, thereby increasing the lifting distance and achieving the effect of extending the mechanical motion range. Before using the range-extender cylinder body 1, the top of the compensating cylinder piston rod should be removed. The piston limiting top plate 31 presses the sealing box 21 down along the piston rod of the compensating cylinder, installing it at the contact end between the piston rod and the cylinder body lifting part. A sealing groove 23 is provided on the outer side of this contact end. After the sealing ring 22 at the bottom of the sealing box 21 is inserted into the sealing groove 23, the piston limiting top plate 31 is then snapped back into its original position at the top of the compensating cylinder piston rod. During this snapping process, the pressing plate 32 presses the top of the sealing box 21 tightly. At this time, the multi-stage telescopic support 33 between the pressing plate 32 and the piston limiting top plate 31, and its inner compression spring 34, are in a taut state. After pressing the piston limiting top plate 31 to fix it at the top of the compensating cylinder piston rod, the electric telescopic rod 38 is activated, driving the connecting block. 37 slides along the bottom of the piston limiting top plate 31, pulling the connecting block 37 and the rotating rod 36 on the outside of the elastic soft clamp 35, so that the elastic soft clamp 35 clamps the outside of the compensating cylinder piston rod inward, completing the installation of the sealing box 21 and the piston limiting top plate 31. After installation, the lifting operation can be carried out. During lifting, the multi-stage telescopic support column 33 will extend as the compensating cylinder piston rod rises. When the compensating cylinder piston rod is at the highest point, the compression spring 34 is in a relaxed state. If there is swaying during the rise of the compensating cylinder piston rod, it will squeeze the ball 24e in the sealing box 21 outside the contact point with the cylinder barrel, causing the ball 24e to roll slightly inside the elastic fixing block 24d and squeeze the compression ring 2. 4b, which then compresses the rubber ring 24a inside the sealing box 21. The rubber ring 24a is an elastic hollow storage body containing lubricating oil. When the ball 24e rolls and compresses the rubber ring 24a, it changes the shape of the oil leakage hole 24c between the rubber ring 24a and the compression ring 24b, so that it is no longer blocked by the ball 24e. The internal lubricating oil then leaks out and adheres to the ball 24e, and is applied to the outside of the piston rod of the compensating oil cylinder, achieving a lubrication effect. At the same time, the inside of the sealing box 21 can also be sealed, effectively avoiding the lifting risk caused by excessive friction and poor sealing. In addition, the sealing box 21 with insufficient oil can be quickly replaced by the above method, reducing the safety hazards of each lifting operation.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An external mechanical range extender cylinder jacking device with locking nut, comprising a range extender cylinder body (1), characterized in that: The outer side of the range-extending oil cylinder body (1) is movably connected with a sealing and lubricating mechanism (2), and the top of the range-extending oil cylinder body (1) is movably connected with a quick pressing mechanism (3), which is arranged at the top of the sealing and lubricating mechanism (2). The sealing and lubricating mechanism (2) comprises a sealing box (21), a sealing ring (22), a sealing groove (23) and an extrusion lubricating assembly (24), the sealing box (21) is movably connected to the outer side of the range-extending oil cylinder body (1), the sealing ring (22) is fixedly connected to the bottom of the sealing box (21), the sealing groove (23) is arranged on the outer side of the range-extending oil cylinder body (1), the sealing ring (22) is movably connected to the inner side of the sealing groove (23), and the extrusion lubricating assembly (24) is movably connected to the inner side of the sealing box (21).

2. The external mechanical range extender cylinder jacking device with locking nut according to claim 1, characterized in that: The quick pressing mechanism (3) comprises a piston limiting top plate (31), a pressing plate (32), a multi-stage telescopic support (33), a compression spring (34), an elastic soft clamping block (35), a rotating rod (36), a linkage block (37) and an electric telescopic rod (38).

3. The external mechanical range extender cylinder jacking device with locking nut according to claim 2, characterized in that: The piston limiting top plate (31) is movably connected to the top of the range-extending oil cylinder body (1), the multi-stage telescopic support (33) is fixedly connected to the bottom of the piston limiting top plate (31), the pressing plate (32) is fixedly connected to the bottom of the multi-stage telescopic support (33), and the pressing plate (32) is arranged at the top of the sealing box (21).

4. The external mechanical range extender cylinder jacking device with locking nut according to claim 2, characterized in that: The elastic soft clamping block (35) is slidably connected to the left side of the bottom of the piston limiting top plate (31), the linkage block (37) is slidably connected to the right side of the bottom of the piston limiting top plate (31), the rotating rod (36) is rotatably connected to the outer sides of the elastic soft clamping block (35) and the linkage block (37), the electric telescopic rod (38) is fixedly connected to the right side of the linkage block (37), and the electric telescopic rod (38) is fixedly connected to the outer side of the piston limiting top plate (31).

5. The external mechanical range extender cylinder jacking device with locking nut according to claim 1, characterized in that: The extrusion lubricating assembly (24) comprises a rubber ring (24a), an extrusion ring (24b), an oil leakage hole (24c), an elastic fixing block (24d) and a ball (24e).

6. The external mechanical range extender cylinder jacking device with locking nut according to claim 5, characterized in that: The rubber ring (24a) is movably connected to the inner side of the sealing box (21), the extrusion ring (24b) is fixedly connected to the outer side of the rubber ring (24a), the extrusion ring (24b) is arranged at the inner side of the sealing box (21), the elastic fixing block (24d) is movably connected to the inner side of the extrusion ring (24b), the ball (24e) is movably connected to the outer side of the elastic fixing block (24d), the ball (24e) is arranged at the inner side of the extrusion ring (24b), the oil leakage hole (24c) is arranged on the outer sides of the extrusion ring (24b) and the rubber ring (24a), and the oil leakage hole (24c) is arranged at the outer side of the ball (24e).

7. The external mechanical range extender cylinder jacking device with locking nut according to claim 2, characterized in that: The outer sides of the piston limiting top plate (31) and the range-extending oil cylinder body (1) are movably connected with a positioning magnetic attraction (4).

8. The external mechanical range extender cylinder jacking device with locking nut according to claim 7, characterized in that: The top of the positioning magnetic attraction (4) is movably connected with a bearing plate (5), and the top of the bearing plate (5) is movably connected with an anti-skid pad (6).

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