Pushing jack with piston convenient to disassemble

Abstract

The utility model provides an advancing jack with a piston convenient to disassemble, which relates to the technical field of advancing jacks and comprises a cylinder body, a sealing cover is in threaded connection with the position, close to the top, of the outer surface of the cylinder body, a piston assembly is arranged on the inner side of the cylinder body, and the top of the piston assembly is fixedly connected with a connecting assembly. In the use process, after the sealing cover is screwed out of the surface of the cylinder body in a threaded mode, the fixing nut is screwed through a tool, and after the fixing nut is separated from the threaded rod, the connecting plate, the fixing block and the piston body which are used for abutting and fixing can be sequentially taken down from the multiple fixing rods and the outer surface of the threaded rod; the fixing block and the piston body which are replaced are replaced, in the dismounting and replacing process, the piston of the pushing jack can be rapidly replaced only by screwing one fixing nut, and the using effect of the pushing jack is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of push jacks, in particular to a push jack with a piston that is easy to disassemble. Background Art

[0002] Push jacks are widely used in various industries such as mining, transportation, railways, bridges, and shipbuilding. A push jack is a small and light lifting device that uses a rigid lifting piece as a working device and jacks up heavy objects within the stroke through a top bracket or a bottom pawl. Jacks are mainly used in factories, mines, transportation and other departments for vehicle repair and other lifting and supporting work.

[0003] In the prior art, due to long-term use, the piston of the traditional push jack is corroded by oil and worn against the inner wall of the cylinder body, resulting in easy damage and the need for replacement. However, the piston of the jack is generally fixedly connected to the telescopic rod body, making it extremely troublesome to disassemble and replace the piston, and thus inconvenient to use. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that the piston of the jack is generally fixedly connected to the telescopic rod body, resulting in extremely troublesome disassembly and replacement of the piston and inconvenient use, and to propose a push jack with a piston that is easy to disassemble.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A push jack with a piston that is easy to disassemble, comprising: a cylinder body, a sealing cover is threadedly connected to a position near the top of the outer surface of the cylinder body, a piston assembly is arranged inside the cylinder body, and a connection assembly is fixedly connected to the top of the piston assembly; the piston assembly includes a rod body, a piston body is arranged at the bottom of the rod body, a fixing block is arranged on the inner surface of the piston body, a connecting plate is arranged on the inner surface of the fixing block, a plurality of fixing rods are fixedly connected at equal intervals near the edge of the bottom of the rod body, the outer surfaces of the plurality of fixing rods sequentially pass through the top of the piston body and the fixing block in a movable manner, a threaded rod is fixedly connected to the center of the bottom of the rod body, the outer surface of the threaded rod sequentially passes through the top of the piston body, the fixing block and the connecting plate in a movable manner, and a fixing nut is threadedly rotatably connected to a position near the bottom of the outer surface of the threaded rod.

[0006] Preferably, the connection assembly includes a connection block, an arc-shaped plate is arranged in a matching manner on the inner surface of the connection block, guide rods are symmetrically fixedly connected to the outer surface of the arc-shaped plate, the outer surfaces of the two guide rods both pass through the top of the connection block in a sliding manner, and a wing bolt is threadedly rotatably connected to the inner wall of the connection block, and the wing bolt is arranged in a matching manner with the arc-shaped plate.

[0007] Preferably, a plurality of through holes are equidistantly formed in the top of the connecting plate, and a plurality of hollow cylinders are fixedly connected to the bottom of the connecting plate at equal intervals. The hollow cylinders are communicated with the through holes.

[0008] Preferably, the position of the outer surface of the fixing rod near the bottom is located inside the through hole, and the bottom of the fixing rod is attached to the inner bottom of the hollow cylinder.

[0009] Preferably, the connecting plate is located between the fixing nut and the fixing block, and the fixing nut is matched with the connecting plate.

[0010] Preferably, a spring is sleeved on the outer surface of the guide rod near the top, and the top cross section of the guide rod is larger than the bottom cross section.

[0011] Preferably, a sealing ring block is fixedly connected to the inner surface of the sealing cover, and the inner surface of the sealing ring block is slidably connected to the outer surface of the rod body.

[0012] Preferably, a sealing ring is arranged between the sealing cover and the sealing ring block. The bottom of the sealing ring is attached to the top of the cylinder block, and the sealing ring is matched with the cylinder block.

[0013] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0014] 1. In the present utility model, during use, by screwing the sealing cover to threadedly remove it from the surface of the cylinder block, and then using a tool to screw the fixing nut, after the fixing nut is separated from the threaded rod, the connecting plate, the fixing block and the piston body used for abutting and fixing can be removed from the outer surfaces of the plurality of fixing rods and the threaded rod in sequence, and the replaced fixing block and piston body can be replaced. During the disassembly and replacement process, only one fixing nut needs to be screwed to quickly replace the piston of the pushing jack, improving the use effect of the pushing jack.

[0015] 2. In the present utility model, during use, by arranging an arc-shaped plate on the inner surface of the connecting block for connection, the arc-shaped plate is suspended at the inner top of the connecting block through the elastic reset action of the springs on the surfaces of the two guide rods. When the butterfly bolt is screwed to move downward in the inner wall of the connecting block, it will gradually abut against and push the arc-shaped plate, making it fit on the surface of the inserted object, so that the connecting block can be used for connecting pieces with different diameters, further improving the use effect of the pushing jack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a pushing jack with a piston that is easy to disassemble according to the present utility model;

[0017] Figure 2 is a schematic structural diagram of a piston assembly of a pushing jack with a piston that is easy to disassemble according to the present utility model;

[0018] Figure 3 This is a schematic structural diagram of a connecting plate of a push jack with a piston that is easy to disassemble according to the present utility model;

[0019] Figure 4 This is a schematic structural diagram of a connecting component of a push jack with a piston that is easy to disassemble according to the present utility model;

[0020] Figure 5 This is a schematic partial structural diagram of a push jack with a piston that is easy to disassemble according to the present utility model.

[0021] Legend: 1. Cylinder block; 2. Piston assembly; 201. Rod body; 202. Fixed rod; 203. Threaded rod; 204. Piston body; 205. Fixed block; 206. Connecting plate; 207. Fixed nut; 208. Hollow cylinder; 209. Through hole; 3. Connecting component; 301. Connecting block; 302. Arc plate; 303. Guide rod; 304. Spring; 305. Wing bolt; 4. Sealing cover; 5. Sealing ring; 6. Sealing ring block. Detailed implementation manners

[0022] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0023] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model may be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0024] Example 1, as Figures 1 - 5As shown in the figure, the utility model provides a push jack with a piston that is convenient to disassemble, including: a cylinder block 1, a sealing cover 4 is threadedly connected to a position near the top of the outer surface of the cylinder block 1, a piston assembly 2 is arranged inside the cylinder block 1, and a connecting assembly 3 is fixedly connected to the top of the piston assembly 2; the piston assembly 2, the piston assembly 2 includes a rod body 201, a piston body 204 is arranged at the bottom of the rod body 201, a fixing block 205 is arranged on the inner surface of the piston body 204, a connecting plate 206 is arranged on the inner surface of the fixing block 205, a plurality of fixing rods 202 are equidistantly and fixedly connected to the bottom of the rod body 201 near the edge, the outer surfaces of the plurality of fixing rods 202 sequentially pass through the top of the piston body 204 and the fixing block 205, a threaded rod 203 is fixedly connected to the center of the bottom of the rod body 201, the outer surface of the threaded rod 203 sequentially passes through the top of the piston body 204, the fixing block 205 and the connecting plate 206, a fixing nut 207 is threadedly rotatably connected to a position near the bottom of the outer surface of the threaded rod 203, a plurality of through holes 209 are equidistantly formed in the top of the connecting plate 206, a plurality of hollow cylinders 208 are equidistantly fixedly connected to the bottom of the connecting plate 206, the hollow cylinders 208 are communicated with the through holes 209, the outer surface of the fixing rod 202 near the bottom is located inside the through hole 209, the bottom of the fixing rod 202 is attached to the inner bottom of the hollow cylinder 208, the connecting plate 206 is located between the fixing nut 207 and the fixing block 205, the fixing nut 207 and the connecting plate 206 are in a matching setting, a sealing ring block 6 is fixedly connected to the inner surface of the sealing cover 4, the inner surface of the sealing ring block 6 is slidably connected to the outer surface of the rod body 201, a sealing ring 5 is arranged between the sealing cover 4 and the sealing ring block 6, the bottom of the sealing ring 5 is attached to the top of the cylinder block 1, and the sealing ring 5 and the cylinder block 1 are in a matching setting.

[0025] The effect achieved by the entire Embodiment 1 is that when disassembling and maintaining the piston of the push jack, after fixing the cylinder block 1 with a tool, turn the sealing cover 4 to screw it out from the surface thread of the cylinder block 1. At this time, the rod body 201 and the internal piston assembly 2 can be pulled out upward. Then, turn the fixing nut 207 to screw it out from the outer surface of the threaded rod 203, and sequentially remove the connecting plate 206 and the fixing block 205, so that the piston body 204 provided on the outer surface of the fixing block 205 can be replaced. The piston body 204 is closely attached to the fixing block 205 to form a whole. After replacement, align the whole formed by the replaced piston body 204 and the fixing block 205 with multiple fixing rods 202 and the threaded rod 203 and insert them. Then, insert the connecting plate 206 through multiple through holes 209 to align with the multiple fixing rods 202 until the inner bottoms of the multiple hollow cylinders 208 abut against the bottoms of the multiple fixing rods 202. Use a tool to thread the fixing nut 207 onto the surface of the threaded rod 203 until the fixing nut 207 tightly abuts against the inner top of the connecting plate 206, so that the top of the piston body 204 will be closely attached to the top of the rod body 201. After the piston body 204 is inserted into the cylinder block 1, turn the sealing cover 4 to thread it onto the outer surface of the cylinder block 1. The bottom of the sealing ring 5 will tightly fill the gap between the sealing cover 4 and the sealing ring block 6, playing a sealing role. During the disassembly and replacement process, only one fixing nut 207 needs to be turned to quickly replace the piston of the push jack, improving the use effect of the push jack.

[0026] Embodiment 2, as Figures 1 - 5 shown, the connecting component 3 includes a connecting block 301. An arc-shaped plate 302 is provided on the inner surface of the connecting block 301 in a matching manner. Guide rods 303 are symmetrically and fixedly connected to the outer surface of the arc-shaped plate 302. The outer surfaces of the two guide rods 303 slidably penetrate through the top of the connecting block 301. A butterfly bolt 305 is rotationally connected to the inner wall of the connecting block 301 by threading. The butterfly bolt 305 is provided in a matching manner with the arc-shaped plate 302. A spring 304 is sleeved on the outer surface of the guide rod 303 near the top. The top cross-section of the guide rod 303 is larger than the bottom cross-section.

[0027] The effect achieved by the entire Embodiment 2 is that during use, by providing the arc-shaped plate 302 on the inner surface of the connecting block 301 for connection, the arc-shaped plate 302 is suspended at the inner top of the connecting block 301 through the elastic reset function of the springs 304 on the surfaces of the two guide rods 303. When the butterfly bolt 305 is turned to move downward in the inner wall of the connecting block 301 by threading, it will gradually abut against and push the arc-shaped plate 302 to make it fit against the surface of the inserted object, enabling the connecting block 301 to be used for connecting pieces with different diameters, further improving the use effect of the push jack.

[0028] Working principle: When disassembling and maintaining the piston of the push jack, after fixing the cylinder block 1 with a tool, turn the sealing cover 4 to screw it out from the surface thread of the cylinder block 1. At this time, the rod body 201 and the internal piston assembly 2 can be pulled out upward. Then, turn the fixing nut 207 to screw it out from the outer surface of the threaded rod 203, and sequentially remove the connecting plate 206 and the fixing block 205, so that the piston body 204 arranged on the outer surface of the fixing block 205 can be replaced. The piston body 204 and the fixing block 205 are closely attached to form a whole. After replacement, align the whole formed by the replaced piston body 204 and the fixing block 205 with multiple fixing rods 202 and the threaded rod 203 and insert them. Then, insert the connecting plate 206 through multiple through holes 209 to align with the multiple fixing rods 202 until the inner bottoms of the multiple hollow cylinders 208 abut against the bottoms of the multiple fixing rods 202. Use a tool to thread the fixing nut 207 onto the surface of the threaded rod 203 until the fixing nut 207 tightly abuts against the inner top of the connecting plate 206, so that the top of the piston body 204 will closely fit against the top of the rod body 201. After the piston body 204 is inserted into the cylinder block 1, turn the sealing cover 4 to thread it onto the outer surface of the cylinder block 1. The bottom of the sealing ring 5 will tightly fill the gap between the sealing cover 4 and the sealing ring block 6, playing a sealing role. By arranging an arc-shaped plate 302 on the inner surface of the connecting block 301 for connection, the arc-shaped plate 302 is suspended at the inner top of the connecting block 301 through the elastic reset function of the spring 304 on the surfaces of the two guide rods 303. When turning the butterfly bolt 305 to make it move downward in a threaded manner in the inner wall of the connecting block 301, it will gradually abut against and push the arc-shaped plate 302 to make it fit against the surface of the inserted object, so that the connecting block 301 can be used for connecting pieces with different diameters, further improving the use effect of the push jack.

[0029] The above is only the preferred embodiment of the present invention, and does not limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A push jack with an easily disassembled piston, characterized in that: include: A cylinder body (1), wherein a sealing cover (4) is threadedly connected to a position near the top of the outer surface of the cylinder body (1), a piston assembly (2) is arranged on the inner side of the cylinder body (1), and a connecting assembly (3) is fixedly connected to the top of the piston assembly (2); A piston assembly (2), the piston assembly (2) comprising a rod body (201), a piston body (204) being arranged at the bottom of the rod body (201), a fixing block (205) being arranged on the inner surface of the piston body (204), a connecting plate (206) being arranged on the inner surface of the fixing block (205), a plurality of fixing rods (202) being equidistantly fixedly connected to the bottom of the rod body (201) near the edge, the outer surfaces of the plurality of fixing rods (202) being movably connected to and passing through the piston body (204) and the top of the fixing block (205) in sequence, a threaded rod (203) being fixedly connected to the center of the bottom of the rod body (201), the outer surface of the threaded rod (203) being movably connected to and passing through the piston body (204), the fixing block (205) and the top of the connecting plate (206) in sequence, and a fixing nut (207) being rotatably connected to the outer surface of the threaded rod (203) near the bottom.

2. The push jack with easily disassembled piston according to claim 1, characterized in that: The connection assembly (3) comprises a connection block (301), the inner surface of the connection block (301) is matched with an arc plate (302), the outer surface of the arc plate (302) is symmetrically fixedly connected with guide rods (303), the outer surfaces of the two guide rods (303) are slidably penetrated through the top of the connection block (301), the inner surface wall of the connection block (301) is threadedly connected with a butterfly bolt (305), and the butterfly bolt (305) is matched with the arc plate (302).

3. The push jack with easily disassembled piston according to claim 1, characterized in that: The top of the connection plate (206) is provided with a plurality of through holes (209) at equal intervals, and the bottom of the connection plate (206) is fixedly connected with a plurality of hollow cylinders (208) at equal intervals, and the hollow cylinders (208) are connected to the through holes (209).

4. The push jack with easily disassembled piston according to claim 1, characterized in that: The position of the outer surface of the fixing rod (202) close to the bottom is located inside the through hole (209), and the bottom of the fixing rod (202) fits with the inner bottom of the hollow cylinder (208).

5. The push jack with easily disassembled piston according to claim 1, characterized in that: The connecting plate (206) is located between the fixing nut (207) and the fixing block (205), and the fixing nut (207) and the connecting plate (206) are matched to each other.

6. The push jack with easily disassembled piston according to claim 2, characterized in that: A spring (304) is sleeved on a position close to the top of the outer surface of the guide rod (303), and the top cross-section of the guide rod (303) is larger than the bottom cross-section.

7. The push jack with easily disassembled piston according to claim 1, characterized in that: The inner surface of the sealing cover (4) is fixedly connected to a sealing ring block (6), and the inner surface of the sealing ring block (6) is slidably connected to the outer surface of the rod body (201).

8. The push jack with easily disassembled piston according to claim 7, characterized in that: A sealing ring (5) is arranged between the sealing cover (4) and the sealing ring block (6); the bottom of the sealing ring (5) is in contact with the top of the cylinder body (1); and the sealing ring (5) and the cylinder body (1) are arranged in a matching manner.

Images