Integrated jack and ejector device

Abstract

The present invention discloses an integrated jack and a push-up device, the jack includes an outer frame body and a jack body, the jack body includes a cylinder body, a piston rod and a piston, the outer frame body includes a rectangular parallelepiped frame, the rectangular parallelepiped frame is sleeved outside the cylinder body, and the cylinder body is fixedly connected to the rectangular parallelepiped frame through a connecting component; the outer frame body also includes a plurality of positioning docking components, the positioning docking components include a vertically arranged slot and a vertical plug rod adapted to the slot, the slot and the vertical plug rod are arranged in a one-to-one correspondence, the slot is fixedly installed on one of the horizontally arranged surfaces of the rectangular parallelepiped frame, the vertical plug rod is fixedly installed on another horizontally arranged surface of the rectangular parallelepiped frame, and the central axis of the vertical plug rod and the slot is located on the same vertical straight line. The jack adopts this structure to conveniently realize the precise positioning and combined assembly of multiple jacks to form a push-up device, so as to increase the thrust of the push-up device by superimposing the jacks, thereby improving the assembly efficiency of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic machinery, and in particular relates to an integrated jack and a pushing device. Background Art

[0002] At present, with the construction of submarine tunnels, immersed tube technology is being applied in more and more occasions. After the immersed tube is initially installed and placed underwater, its position may deviate, and the adjustment of the position deviation is very critical. The position adjustment of large structures such as immersed tubes requires a very large jacking force. The pushing force of a single jack cannot meet the construction requirements, and multiple jacks are required to work together as a jacking device.

[0003] However, in order to apply force stably during the pushing process, the force-applying surfaces of multiple jacks need to be assembled on the same plane. The assembly positioning requirements are high, and the working surface for adjusting the position of the immersed tube is narrow, resulting in problems such as complicated assembly and installation process of the pushing device, inconvenient construction, and low efficiency. Summary of the invention

[0004] The present invention aims at the deficiencies of the prior art and proposes an integrated jack and a push-up device. The integrated jack adopts this structure and can conveniently realize the precise positioning and assembly of multiple jacks to form a push-up device, so as to increase the thrust of the push-up device by superimposing the jacks and improve the assembly efficiency of the device.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An integrated jack comprises an outer frame body and a jack body, wherein the jack body comprises a cylinder body, a piston rod, and a piston slidingly and sealingly matched with the inner wall of the cylinder body, with the center axis of the cylinder body as a horizontal reference line, the outer frame body comprises a rectangular frame constructed by framing profiles, the lateral sides of the rectangular frame are arranged parallel to the horizontal reference line, and the top surface and the bottom surface of the rectangular frame are both arranged as horizontal setting surfaces, the rectangular frame is sleeved outside the cylinder body, and the cylinder body is fixedly connected to the rectangular frame by a connecting component; the outer frame body also comprises a plurality of positioning and docking assemblies, the positioning and docking assemblies comprise a vertically arranged slot and a vertical plug rod adapted to the slot, the slot and the vertical plug rod are arranged in a one-to-one correspondence, the slot is fixedly installed on one of the horizontal setting surfaces of the rectangular frame, the vertical plug rod arranged corresponding to the slot is fixedly installed on another horizontal setting surface of the rectangular frame, and the center axis of the vertical plug rod and the corresponding slot are located on the same vertical straight line.

[0007] Preferably, there are four slots, which are respectively fixedly mounted on the four corners of the top surface of the rectangular frame, and the slot openings are arranged upward; there are four vertical plug rods, which are respectively fixedly mounted on the four corners of the bottom surface of the rectangular frame, and the vertical plug rods are arranged vertically downward from the bottom surface of the rectangular frame.

[0008] Preferably, the slot is provided on a first positioning block, the first positioning block is fixedly mounted on the top surface of the rectangular frame, the vertical plug rod is provided on a second positioning block, and the second positioning block is fixedly mounted on the bottom surface of the rectangular frame.

[0009] Preferably, the jack body also includes a leveling unit, which includes an extension tube, a rear saddle and a pad component that are fixedly connected in sequence, the extension tube, the rear saddle and the pad component are all coaxially arranged with the center axis of the cylinder body, and the two end surfaces of the extension tube are respectively fixedly connected to the cylinder bottom of the cylinder body and the rear saddle; the connecting end of the rear saddle and the pad component, and the radial dimensions of the pad component are both larger than the radial dimensions of the cylinder body.

[0010] Preferably, the connecting component comprises a clamping plate fixedly mounted in the rectangular frame, the clamping plate is provided with a clamping socket for clamping the outer wall of the cylinder body or the outer wall of the extension tube, and the clamping socket is sleeved outside the outer wall of the cylinder body or the outer wall of the extension tube.

[0011] Preferably, the center axis of the cylinder body is colinearly arranged with the transverse center axis of the rectangular frame, with the side of the rectangular frame perpendicular to the horizontal reference line as the longitudinal plane, the telescopic end of the piston of the cylinder body and the connecting end of the extension tube and the rear saddle respectively pass through the rectangular frame from the two longitudinal planes, and the connecting component includes two clamping plates, which respectively clamp the outer wall of the cylinder body and the outer wall of the extension tube, and the two clamping plates are respectively fixedly mounted on the two longitudinal planes.

[0012] Preferably, the pad component comprises a plurality of thick pads whose central axes are coaxially arranged and connected in sequence, the thick pads are detachably connected to each other, and the thick pads are detachably connected to the rear saddle.

[0013] Preferably, the jack body further comprises a first oil port and a second oil port opened in the cylinder body, a cylinder opening portion is provided at the telescopic end of the piston rod of the cylinder body, the piston and the rod head plug body are respectively fixedly mounted at both ends of the piston rod, the radial dimensions of the piston and the rod head plug body are both larger than the radial dimensions of the piston rod, the cylinder body opening portion is sleeved on the rod head plug body, and the rod head plug body and the cylinder body opening portion are slidingly sealed in the axial direction of the piston rod; a sealing ring is fixedly mounted on the inner wall of the cylinder body, the sealing ring and the cylinder bottom of the cylinder body are respectively arranged on both sides of the piston, the sealing ring is sleeved outside the piston rod, and the piston rod and the sealing ring are slidingly sealed in the axial direction of the piston rod; the space surrounded by the inner wall of the cylinder body, the sealing ring and the rod head plug body constitutes a first oil chamber, the space surrounded by the inner wall of the cylinder body, the piston and the sealing ring constitutes a second oil chamber, and the space surrounded by the inner wall of the cylinder body, the cylinder bottom and the piston constitutes a third oil chamber; the first oil port is connected to the first oil chamber and the third oil chamber, and the second oil port is connected to the second oil chamber.

[0014] Preferably, the cylinder body, the cylinder body opening, the piston, the piston rod, the sealing ring, and the rod head plug body are all coaxially arranged with their central axes, and the outer side wall of the rod head plug body is set to be cylindrical.

[0015] Preferably, the cylinder body is provided with a first oil delivery channel and a second oil delivery channel, the first oil port is connected to the first oil chamber and the third oil chamber through the first oil delivery channel, and the second oil port is connected to the second oil chamber through the second oil delivery channel.

[0016] Preferably, the jack body also includes a self-locking structure for fixing the position of the piston rod to prevent it from retracting, the self-locking structure includes an external thread provided on the outer wall of the rod head plug body, and a locking nut sleeved on the rod head plug body, the internal thread of the locking nut is adapted to the external thread of the rod head plug body, and the locking nut is provided outside the cylinder body and can abut against the opening of the cylinder body.

[0017] Preferably, the force-applying surface of the rod head plug body for pushing up a force-bearing object is provided with a front end plate, and the front end plate is configured as a disc-shaped plate coaxially arranged with the piston rod, and the radial dimension of the front end plate is larger than the radial dimension of the rod head plug body.

[0018] Preferably, the rectangular frame, cylinder body, piston, piston rod, sealing ring and rod head plug body are all made of aviation aluminum alloy structure.

[0019] Preferably, the piston rod is provided with an elastic seal for sealing the gap between the piston and the inner wall of the cylinder body, the inner ring of the sealing ring is provided with an elastic seal for sealing the gap between the piston rod and the sealing ring, and the rod head plug body is provided with an elastic seal for sealing the rod head plug body and the cylinder body opening.

[0020] Preferably, the elastic sealing members are all rubber sealing rings.

[0021] The present invention also discloses a pushing device, comprising a plurality of the above-mentioned integrated jacks, wherein the rectangular parallelepiped frames of the plurality of integrated jacks are stacked and connected in sequence from top to bottom along the vertical direction, and two adjacent integrated jacks are connected via the positioning docking assembly.

[0022] Compared with the prior art, the invention has the beneficial effects of: providing an integrated jack and a push-up device. The integrated jack adopts this structure to conveniently realize the precise positioning and assembly of multiple jacks to form a push-up device, so as to increase the thrust of the push-up device by superimposing the jacks and improve the assembly efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of the integrated jack of this embodiment;

[0024] Figure 2 is a top view of the integrated jack of this embodiment;

[0025] Figure 3 is a schematic structural diagram of the outer frame body of this embodiment;

[0026] Figure 4 is an exploded view of the jack body of this embodiment;

[0027] Figure 5 is a cross-sectional view of the jack body of this embodiment without the leveling unit;

[0028] Figure 6 This is a schematic diagram of the pre-assembly state of the ejection device of this embodiment;

[0029] In the above figure, 1-outer frame body, 11-rectangular frame, 12-first positioning block, 121-slot, 13-second positioning block, 131-vertical plug rod, 14-clamping plate, 141-bayonet, 2-jack body, 21-cylinder body, 22-second oil port, 23-first oil port, 24-locking nut, 25-rod head plug body, 26-front end plate, 27-extension cylinder, 28-rear saddle, 29-thick pad, 3-third oil chamber, 4-second oil chamber, 5-first oil chamber, 7-sealing ring, 6-piston, 8-piston rod. DETAILED DESCRIPTION

[0030] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that elements, structures, and features in one embodiment may also be beneficially combined in other embodiments without further description.

[0031] It should be noted that, in the description of the present invention, the directions or positional relationships indicated by terms such as “inside”, “outside”, “up”, “down”, “left”, “right”, “front” and “back” are based on the positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] like Figures 1 to 5 As shown, an integrated jack includes an outer frame body 1 and a jack body 2, wherein the jack body 2 includes a cylinder 21, a piston rod 8, and a piston 6 that is slidably sealed with the inner wall of the cylinder 21. The central axis of the cylinder 21 is used as a horizontal reference line. The outer frame body 1 includes a rectangular parallelepiped frame 11 formed by framing materials. The lateral sides of the rectangular parallelepiped frame 11 are arranged parallel to the horizontal reference line, and the top and bottom surfaces of the rectangular parallelepiped frame 11 are both arranged as horizontal setting surfaces. The rectangular parallelepiped frame 11 is sleeved outside the cylinder 21, and the cylinder 21 is fixedly connected to the rectangular parallelepiped frame by a connecting component. Frame 11; the outer frame body 1 also includes a plurality of positioning and docking components, the positioning and docking components include a vertically arranged slot 121 and a vertical plug rod 131 adapted to the slot 121, the slot 121 and the vertical plug rod 131 are arranged in a one-to-one correspondence, the slot 121 is fixedly installed on one of the horizontal setting surfaces of the rectangular frame 11, the vertical plug rod 131 corresponding to the slot 121 is fixedly installed on the other horizontal setting surface of the rectangular frame 11, and the central axis of the vertical plug rod 131 and the corresponding slot 121 are located on the same vertical straight line.

[0033] like Figure 6 As shown, a pushing device comprises a plurality of the above-mentioned integrated jacks, wherein the rectangular parallelepiped frames 11 of the plurality of the integrated jacks are stacked and connected in sequence from top to bottom along the vertical direction, and two adjacent integrated jacks are connected via the positioning docking assembly.

[0034] The push-up device includes a plurality of the above-mentioned jacks stacked and connected in sequence from top to bottom. The two adjacent layers of the rectangular parallelepiped frame 11 realize the connection of the two integrated jacks through the insertion of the slots 121 on the docking surface and the vertical plug rods 131, and cooperate with the gravity to stably connect the upper and lower layers of jacks. Through the setting of the outer frame body 1 with the positioning docking assembly, it is convenient to realize the precise positioning and assembly of multiple jacks to form a push-up device, and it is convenient to assemble the force-applying surfaces of multiple jack bodies 2 on the same plane, so as to increase the thrust of the push-up device through the superposition of the jacks, so that it can meet the construction requirements of large-scale construction push-up operations, and can improve the assembly efficiency and construction efficiency of the device.

[0035] Specifically, there are four slots 121, which are fixedly mounted at the four corners of the top surface of the rectangular frame 11, and the slots 121 are opened upward. There are four vertical rods 131, which are fixedly mounted at the four corners of the bottom surface of the rectangular frame 11, and the vertical rods 131 are vertically downward from the bottom surface of the rectangular frame 11. Figure 4 As shown, when the push-up device is assembled using the integrated jack of the above structure, the vertical plug rod 131 of the upper rectangular frame 11 is inserted into the slot 121 of the lower rectangular frame 11 to achieve the connection between the two integrated jacks.

[0036] Specifically, the slot 121 is provided on the first positioning block 12, and the first positioning block 12 is fixedly mounted on the top surface of the rectangular parallelepiped frame 11. The vertical plug rod 131 is provided on the second positioning block 13, and the second positioning block 13 is fixedly mounted on the bottom surface of the rectangular parallelepiped frame 11. The first positioning block 12 and the second positioning block 13 can be fixed to the rectangular parallelepiped frame 11 by any existing fixing and mounting method. For example, screw holes can be provided on the first positioning block 12, the second positioning block 13 and the rectangular parallelepiped frame 11, and the first positioning block 12 and the second positioning block 13 can be fixed to the rectangular parallelepiped frame 11 by fixing screws.

[0037] Specifically, the jack body 2 further includes a leveling unit, which includes an extension tube 27, a rear saddle 28 and a pad component that are fixedly connected in sequence. The extension tube 27, the rear saddle 28 and the pad component 29 are all coaxially arranged with the central axis of the cylinder body 21, and the two end surfaces of the extension tube 27 are respectively fixedly connected to the cylinder bottom of the cylinder body 21 and the rear saddle 28. When the jack is pushing, the piston rod 8 moves away from the cylinder bottom of the cylinder body 21, which will cause the jack to tip over. The jack body 2 is provided with a leveling unit to move the body center and the center of gravity of the jack body 2 toward the cylinder bottom of the cylinder body 21, thereby improving the stability of the jack when the piston rod 8 is extended.

[0038] Specifically, the connection end of the rear saddle 28 and the pad component, and the radial dimension of the pad component are larger than the radial dimension of the cylinder body 21. The arrangement of the saddle 28 and the pad component increases the contact area between the cylinder bottom and its supporting surface, so that the cylinder bottom of the cylinder body 21 contacts the supporting surface more fully, thereby improving the stability of the construction process.

[0039] Specifically, the pad component includes a plurality of thick pads 29 coaxially arranged with a central axis and connected in sequence, the thick pads 29 are detachably connected to each other, and the thick pads 29 are detachably connected to the rear saddle 28. The above structure can be used to adjust the center of mass and the center of gravity of the jack body 2 according to different construction spaces and working conditions by adjusting the number of thick pads 29 of the pad component. The plurality of thick pads 29 of the pad component can be connected in any detachable connection manner, for example, screw holes are provided on the thick pads 29 and connected by fixing screws. Similarly, the cylinder bottom of the cylinder body 21, the rear saddle 28 and the pad component can also be connected in any detachable connection manner.

[0040] Specifically, the connecting component includes a clamping plate 14 fixedly installed in the rectangular parallelepiped frame 11, and the clamping plate 14 is provided with a clamping hole 141 for clamping the outer wall of the cylinder body 21 or the outer wall of the extension tube 27, and the clamping hole 141 is sleeved outside the outer wall of the cylinder body 21 or the outer wall of the extension tube 27. The clamping plate 14 can be used to fix the jack body 2 and the outer frame body 1. In addition to the clamping plate 14 structure, the connecting component can also use any fixed connection structure to connect the jack body 2 and the outer frame body 1. The clamping plate 14 can be fixedly installed on the rectangular parallelepiped frame 11 in any fixed connection mode, such as the clamping plate 14 can be welded on the rectangular parallelepiped frame 11.

[0041] Specifically, the central axis of the cylinder body 21 is colinearly arranged with the transverse central axis of the rectangular frame 11, and the side of the rectangular frame 11 perpendicular to the horizontal reference line is used as the longitudinal plane. The telescopic end of the piston of the cylinder body 21 and the connecting end of the extension tube 27 and the rear saddle 28 respectively pass through the rectangular frame 11 from the two longitudinal planes. The connecting component includes two clamping plates 14, which respectively clamp the outer wall of the cylinder body 21 and the outer wall of the extension tube 27, and the two clamping plates 14 are respectively fixedly installed on the two longitudinal planes.

[0042] Specifically, the jack body also includes a first oil port 23 and a second oil port 22 opened in the cylinder body 21, and a cylinder opening portion is provided at the telescopic end of the piston rod of the cylinder body 21, and the telescopic end of the piston rod is the opposite end of the cylinder bottom, and the two ends of the piston rod 8 are respectively fixedly installed with the piston 6 and the rod head plug body 25, and the radial dimensions of the piston 6 and the rod head plug body 25 are larger than the radial dimension of the piston rod 8, and the cylinder opening portion is sleeved outside the rod head plug body 25, and the rod head plug body 25 and the cylinder opening portion are slidably sealed along the axial direction of the piston rod 8; a sealing ring 7 is fixedly installed on the inner wall of the cylinder body 21, and the sealing The ring 7 and the cylinder bottom are respectively arranged on both sides of the piston 6, the sealing ring 7 is sleeved on the outside of the piston rod 8, and the piston rod 8 and the sealing ring 7 are slidably sealed along the axial direction of the piston rod 8; the space surrounded by the inner wall of the cylinder body 21, the sealing ring 7 and the rod head plug body 25 constitutes a first oil chamber 5, the space surrounded by the inner wall of the cylinder body 21, the piston 6 and the sealing ring 7 constitutes a second oil chamber 4, and the space surrounded by the inner wall of the cylinder body 21, the cylinder bottom and the piston 6 constitutes a third oil chamber 3; the first oil port 23 connects the first oil chamber 5 and the third oil chamber 3, and the second oil port 22 connects the second oil chamber 4.

[0043] The jack body adopts the above structure, and its first oil chamber 5 and the third oil chamber 3 are the jack push working chambers, and are connected to the first oil port 23 at the same time. When the jack is pushing, the two oil chambers are filled with oil at the same time. The added effect can increase the jack push force area, thereby achieving the purpose of increasing the jack thrust. The first oil chamber 5 and the third oil chamber 3 are the oil inlet chambers when the hydraulic cylinder piston rod 8 is extended, and the oil return chamber when the jack is retracted. The second oil chamber 4 is the jack retraction chamber, which is connected to the second oil port 2. When the jack push operation is completed, the second oil chamber 4 is filled with oil to push the piston rod 8 to retract the cylinder body 21. By improving the jack structure, the device can achieve the improvement of the jack push force without basically increasing the equipment volume and deadweight.

[0044] Specifically, the cylinder bottom is used for supporting the bottom of the jack and sealing the working chamber of the cylinder body 21. It is connected to the side wall of the cylinder body 21 through threads, and a seal is installed at the contact point between the cylinder bottom and the side wall of the cylinder body 21 for sealing; the rod head plug body 25 is provided with a threaded blind hole, and the end of the piston rod 8 is provided with an external thread structure adapted to the threaded blind hole, and the rod head plug body 25 and the piston rod 8 are connected through a threaded structure.

[0045] Specifically, the cylinder body 21, the cylinder body opening, the piston 6, the piston rod 8, the sealing ring 7, and the rod head plug body 25 are all coaxially arranged with their central axes, and the outer side wall of the rod head plug body 25 is set to be cylindrical.

[0046] Specifically, the cylinder body 21 is provided with a first oil delivery channel and a second oil delivery channel, the first oil port 23 is connected to the first oil chamber 5 and the third oil chamber 3 through the first oil delivery channel, and the second oil port 22 is connected to the second oil chamber 4 through the second oil delivery channel.

[0047] Specifically, the jack body also includes a self-locking structure for fixing the position of the piston rod 8 to prevent it from retracting. The self-locking structure includes an external thread provided on the outer wall of the rod head plug body 25, and a locking nut 24 sleeved on the rod head plug body 25. The internal thread of the locking nut 24 is adapted to the external thread of the rod head plug body 25. The locking nut 24 is provided outside the cylinder body 21 and can abut against the opening of the cylinder body. When the self-locking structure is provided, when the piston rod 8 is extended to reach the target position, its position is fixed by the self-locking structure to prevent the piston rod 8 from retracting during the pushing process and reduce equipment failures. That is, when the piston rod 8 is extended to a certain length, the locking nut 24 is tightened to abut against the opening of the cylinder body, thereby locking the position of the rod head plug body 25 and preventing the piston rod 8 from retracting.

[0048] Specifically, the force-applying surface of the rod head plug body 25 for pushing the force-bearing object is provided with a front end plate 26, and the front end plate 26 is set as a disc-shaped plate coaxially arranged with the piston rod 8, and the radial dimension of the front end plate 26 is greater than the radial dimension of the rod head plug body 25. The front end plate 26 is provided on the force-applying surface of the rod head plug body 25 to increase the contact area between the rod head plug body 25 and the force-bearing object, so that the rod head plug body 25 and the force-bearing object are more fully in contact, and the force is more evenly applied.

[0049] Specifically, the rectangular frame 11, cylinder body 21, piston 6, piston rod 8, sealing ring 7, and rod head plug body 25 are all made of aviation aluminum alloy. The main structural material of the integrated jack is all aluminum alloy, which can achieve the purpose of reducing the weight of the hydraulic cylinder and overcome the problem of inconvenient installation and transportation of the hydraulic cylinder. At the same time, aviation aluminum alloy has good mechanical properties, and its application in the jack body can further increase the maximum thrust of the jack.

[0050] Specifically, the piston rod 8 is provided with an elastic seal for sealing the gap between the piston 6 and the inner wall of the cylinder body 21, the inner ring of the sealing ring 7 is provided with an elastic seal for sealing the gap between the piston rod 8 and the sealing ring 7, and the rod head plug body 25 is provided with an elastic seal for sealing the rod head plug body 25 and the cylinder body opening.

[0051] Specifically, the elastic sealing members are all configured as rubber sealing rings.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An integrated jack, characterized in that: The jack body comprises an outer frame body and a jack body, wherein the jack body comprises a cylinder body, a piston rod, and a piston which is slidably sealed with the inner wall of the cylinder body, and the center axis of the cylinder body is used as a horizontal reference line. The outer frame body comprises a rectangular frame constructed by framing profiles, the lateral sides of the rectangular frame are arranged parallel to the horizontal reference line, and the top and bottom surfaces of the rectangular frame are both arranged as horizontal setting surfaces, the rectangular frame is sleeved outside the cylinder body, and the cylinder body is fixedly connected to the rectangular frame through a connecting component; the outer frame body also comprises a plurality of positioning and docking assemblies, wherein the positioning and docking assemblies comprise a vertically arranged slot and a vertical plug rod adapted to the slot, the slot and the vertical plug rod are arranged in a one-to-one correspondence, the slot is fixedly installed on one of the horizontal setting surfaces of the rectangular frame, the vertical plug rod arranged corresponding to the slot is fixedly installed on another horizontal setting surface of the rectangular frame, and the center axis of the vertical plug rod and the corresponding slot are located on the same vertical straight line.

2. The integrated jack according to claim 1, characterized in that: There are four slots, which are respectively fixedly mounted on the four corners of the top surface of the rectangular frame, and the slot openings are arranged upward; there are four vertical plug rods, which are respectively fixedly mounted on the four corners of the bottom surface of the rectangular frame, and the vertical plug rods are arranged vertically downward from the bottom surface of the rectangular frame.

3. The integrated jack according to claim 2, characterized in that: The slot is formed on a first positioning block, which is fixedly mounted on the top surface of the rectangular parallelepiped frame. The vertical insertion rod is arranged on a second positioning block, which is fixedly mounted on the bottom surface of the rectangular parallelepiped frame.

4. The integrated jack according to claim 1, characterized in that: The jack body also includes a leveling unit, which includes an extension tube, a rear saddle and a pad component that are fixedly connected in sequence. The extension tube, the rear saddle and the pad component are all coaxially arranged with the center axis of the cylinder body. The two end surfaces of the extension tube are respectively fixedly connected to the cylinder bottom of the cylinder body and the rear saddle; the connecting end of the rear saddle and the pad component, as well as the radial dimensions of the pad component are both larger than the radial dimensions of the cylinder body.

5. The integrated jack according to claim 4, characterized in that: The connecting component comprises a clamping plate fixedly installed in the rectangular parallelepiped frame, the clamping plate is provided with a clamping socket for clamping the outer wall of the cylinder body or the outer wall of the extension tube, and the clamping socket is sleeved outside the outer wall of the cylinder body or the outer wall of the extension tube.

6. The integrated jack according to claim 5, characterized in that: The central axis of the cylinder body is colinearly arranged with the transverse central axis of the rectangular frame, and the side of the rectangular frame perpendicular to the horizontal reference line is used as the longitudinal surface. The telescopic end of the piston of the cylinder body and the connecting end of the extension tube and the rear saddle respectively pass through the rectangular frame from the two longitudinal surfaces. The connecting component includes two clamping plates, which respectively clamp the outer wall of the cylinder body and the outer wall of the extension tube, and the two clamping plates are respectively fixedly installed on the two longitudinal surfaces.

7. The integrated jack according to claim 4, characterized in that: The pad component comprises a plurality of thick pads whose central axes are coaxially arranged and connected in sequence, the thick pads are detachably connected to each other, and the thick pads are detachably connected to the rear saddle.

8. The integrated jack according to claim 1, characterized in that: The jack body also includes a first oil port and a second oil port opened in the cylinder body, a cylinder opening portion is provided at the telescopic end of the piston rod of the cylinder body, the piston and the rod head plug body are fixedly installed at both ends of the piston rod, the radial dimensions of the piston and the rod head plug body are larger than the radial dimensions of the piston rod, the cylinder body opening portion is sleeved on the rod head plug body, and the rod head plug body and the cylinder body opening portion are slidingly sealed in the axial direction of the piston rod; a sealing ring is fixedly installed on the inner wall of the cylinder body, the sealing ring and the cylinder bottom of the cylinder body are respectively arranged on both sides of the piston, the sealing ring is sleeved outside the piston rod, and the piston rod and the sealing ring are slidingly sealed in the axial direction of the piston rod; the space surrounded by the inner wall of the cylinder body, the sealing ring and the rod head plug body constitutes a first oil chamber, the space surrounded by the inner wall of the cylinder body, the piston and the sealing ring constitutes a second oil chamber, and the space surrounded by the inner wall of the cylinder body, the cylinder bottom and the piston constitutes a third oil chamber; the first oil port is connected to the first oil chamber and the third oil chamber, and the second oil port is connected to the second oil chamber.

9. The integrated jack according to claim 8, characterized in that: The jack body also includes a self-locking structure for fixing the position of the piston rod to prevent it from retracting, the self-locking structure including an external thread provided on the outer side wall of the rod head plug body, and a locking nut sleeved on the rod head plug body, the internal thread of the locking nut being adapted to the external thread of the rod head plug body, the locking nut being provided outside the cylinder body and being abuttable against the opening of the cylinder body; the force-applying surface of the rod head plug body for pushing the force-bearing object is provided with a front end plate, the front end plate is provided as a disc-shaped plate coaxially provided with the piston rod, and the radial dimension of the front end plate is larger than the radial dimension of the rod head plug body; the rectangular frame, cylinder body, piston, piston rod, sealing ring, and rod head plug body are all provided as aviation aluminum alloy structures, the piston rod is provided with an elastic sealing member for sealing the gap between the piston and the inner wall of the cylinder body, the inner ring of the sealing ring is provided with an elastic sealing member for sealing the gap between the piston rod and the sealing ring, and the rod head plug body is provided with an elastic sealing member for sealing the rod head plug body and the opening of the cylinder body.

10. A push-up device, characterized in that: It comprises a plurality of integrated jacks as claimed in any one of claims 1 to 9, wherein the rectangular parallelepiped frames of the plurality of integrated jacks are stacked and connected in sequence from top to bottom along the vertical direction, and two adjacent integrated jacks are connected via the positioning docking assembly.

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