Hydraulic cylinder and rapidly combinable multipurpose hydraulic tool

Abstract

This utility model relates to a hydraulic cylinder and a multi-purpose hydraulic tool that can be quickly assembled. It includes a cylinder body with a first cylinder head and a second cylinder head at both ends. One end of a piston rod is located inside the cylinder body, and the other end passes through the second cylinder head. The second cylinder head has multiple connecting lugs circumferentially arranged. One end of the piston rod located outside the cylinder body has an axially inwardly threaded hole. In addition to the hydraulic cylinder, it also includes a center, flat plug, chuck, base, support rod, extension rod, etc. Construction personnel can flexibly assemble the multi-purpose hydraulic tool according to actual usage needs. Thus, during on-site maintenance, because the hydraulic cylinder is the basic component, only a small number of parts need to be stored or transported to achieve multiple different tool functions. This reduces the overall storage space and weight of the maintenance tools, making them easier to manage, use, or carry during on-site work.

Description

Technical Field

[0001] This utility model relates to hydraulic cylinders, and in particular to hydraulic cylinders and multi-purpose hydraulic tools that can be quickly assembled. Background Technology

[0002] When equipment needs repair and maintenance, such as disassembling the inner and outer rings of bearings, disassembling pulleys, interfering with shafts and shaft holes, and removing mounting pins (mounting shafts) in the same repair scenario, different operating tools are often required. For example, a puller is often used for disassembling and repairing the inner and outer rings of bearings and the pulleys; a press is needed for interfering with shafts and shaft holes; and a pin (shaft) puller is needed for removing mounting pins (mounting shafts). Therefore, in the complex assembly and repair process, three different tools may be used frequently. Purchasing multiple repair tools requires too much storage and placement space, and it is also inconvenient to carry and transport them when going out for construction.

[0003] In summary, how to address the issues of consuming procurement funds and storage space for various maintenance tools, and how to facilitate their transport, has become an urgent problem for researchers in this field. Utility Model Content

[0004] The technical problem this utility model aims to solve is: how to reduce the floor space occupied by various maintenance tools and make them easier to move; To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This utility model is a hydraulic cylinder, comprising: a cylinder body, a first cylinder cover and a second cylinder cover respectively provided at both ends of the cylinder body, a piston rod with one end located inside the cylinder body and the other end passing through the second cylinder cover; the second cylinder cover is provided with a plurality of connecting lugs in the circumferential direction, and the piston rod with a connecting threaded hole axially opened inward at the end located outside the cylinder body, the connecting threaded hole being used to install a center, a flat plug or an extension rod.

[0005] Furthermore, the first cylinder head is provided with a handle for easy manual gripping or lifting.

[0006] This utility model provides a first type of quick-assembly multi-purpose hydraulic tool, including a hydraulic cylinder; multiple claws, one end of which is hinged to the corresponding connecting lug, and the other end of which is bent inward to form a hook; a tip, one end of which is connected to the connecting threaded hole of the piston rod, and the other end of which is conical.

[0007] This utility model provides a second type of quick-assembly multi-purpose hydraulic tool, including a hydraulic cylinder; multiple support rods, one end of which is connected to the corresponding connecting lug; The base plate is connected to the other end of the plurality of support rods; The plug has one end connected to the threaded hole of the piston rod, and the other end is a flat surface.

[0008] This utility model provides a third type of quick-assembly multi-purpose hydraulic tool, including a hydraulic cylinder, multiple support rods, one end of which is connected to the corresponding connecting lug; a support ring, the other end of the multiple support rods is connected to the support ring; an extension rod, one end of which is connected to the connecting threaded hole of the piston rod; and a pin puller, one end of which is connected to the extension rod, and the other end is provided with an external thread.

[0009] The beneficial effects of this utility model are as follows: This utility model is a hydraulic cylinder and a multi-purpose hydraulic tool that can be quickly assembled. Construction personnel can flexibly assemble the multi-purpose hydraulic tool according to actual usage needs. In this way, when construction personnel go out for maintenance, since the hydraulic cylinder is the basic component, only a small number of parts need to be stored or transported to realize the functions of multiple different tools. Therefore, the overall storage space of maintenance tools can be reduced, and the weight of the overall maintenance tools is also reduced, making it convenient for management, use, or carrying when going out for construction. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the hydraulic cylinder. Figure 2 This is a structural schematic diagram of Example 1; Figure 3 This is a structural schematic diagram of Example 2; Figure 4 This is a schematic diagram of the structure of Example 3. Detailed Implementation

[0012] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0013] Example 1

[0014] See Figure 2 This embodiment provides a puller that can be quickly assembled into a multi-purpose hydraulic tool for disassembling the inner and outer rings of a bearing or a pulley. Specifically, one end of the chuck 21 is hinged to the connecting lug 15 of the second cylinder head 12 in the hydraulic cylinder 1, and the tip 22 is threadedly connected to the connecting threaded hole 16. When disassembling a bearing or pulley is required, the other end of the chuck 21 is hooked onto the outer ring of the bearing or the pulley. After positioning, the operator holds the handle 17, and the piston rod 14 moves to the right, extending the piston rod 14 out of the cylinder body 13. The cone-shaped tip 22 acts on the inner ring of the bearing or the connecting shaft, thus achieving the disassembly of the inner and outer rings of the bearing or the pulley.

[0015] Example 2

[0016] See Figure 3 This embodiment provides a press that can quickly assemble a multi-purpose hydraulic tool for interference fit installation of shafts and bushings. Specifically, the hydraulic cylinder 1 in embodiment 1 is used. One end of the support rod 31 is connected to the connecting lug 15. The other end of multiple support rods 31 is connected to the base plate 32. The flat plug 33 is connected to the connecting threaded hole 16 by a thread. When it is necessary to install the shaft and bushing, the bushing is placed on the base plate 32, and the shaft is positioned between the bushing and the flat plug 33. After positioning, the construction worker holds the handle 17, and the piston rod 14 moves to the right, extending the piston rod 14 out of the cylinder body 11. The flat plug 33 acts on the shaft, pressing the shaft into the bushing, thus achieving interference fit installation of the shaft and bushing. In this embodiment, the base plate 32 can be designed as a flat plate structure, or it can be connected using the support ring 41 in embodiment 3. When using the support ring 41 for connection, a flat plate must be placed on the end face of the support ring 41 to achieve interference fit of the shaft and bushing.

[0017] Example 3

[0018] See Figure 4 This embodiment provides a pin (shaft) puller, a multi-purpose hydraulic tool that can be quickly assembled for pulling out and disassembling mounting pins (mounting shafts). Specifically, the hydraulic cylinder 1 in Embodiment 1 is used. One end of the support rod 31 is connected to the connecting lug 15. The other end of multiple support rods 31 is connected to a support ring 41. The other end of the piston rod 14 is connected to an extension rod 42. The extension rod 42 and the piston rod 14 are connected by a threaded pair. The other end of the extension rod 42 is connected to a pin puller head 43. The pin puller head 43 is provided with an external thread, which is threaded to the end of the mounting pin (mounting shaft). The piston rod 14 is in the extreme position of the extended state, and the pin puller head 4 is connected to the mounting pin (mounting shaft). The part to be disassembled is placed on the right end face of the support ring 41. After positioning, the operator holds the handle 17, and the piston rod 14 moves to the left. The pin puller head 43 acts on the shaft, pulling the mounting pin (mounting shaft) to the left to the part to be disassembled, thus realizing the disassembly of the mounting pin (mounting shaft).

[0019] In summary, Examples 1, 2, and 3 all use the same hydraulic cylinder, meaning that the same hydraulic cylinder is used for maintenance in the same maintenance scenario; see [link / reference] Figure 1 The hydraulic cylinder 1 includes: a cylinder body 13, with a first cylinder cover 11 and a second cylinder cover 12 respectively provided at both ends of the cylinder body 13; a piston rod 14 with one end located inside the cylinder body 13 and the other end passing through the second cylinder cover 12; the second cylinder cover 12 is provided with a plurality of connecting lugs 15 in the circumferential direction; and the piston rod 14 is provided with a connecting threaded hole 16 axially inward at one end located outside the cylinder body 11.

[0020] Construction workers can flexibly assemble multi-purpose hydraulic tools according to actual usage needs. In this way, when construction workers go out for maintenance, since the hydraulic cylinder is the basic component, only a small number of parts need to be stored or transported to realize the functions of multiple different tools. Therefore, the overall storage space of maintenance tools can be reduced, and the weight of the overall maintenance tools is also reduced, making them convenient to manage, use, or carry when going out for construction.

[0021] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A hydraulic cylinder, characterized in that, include: The cylinder body has a first cylinder head and a second cylinder head at its two ends. One end of the piston rod is located inside the cylinder body, and the other end passes through the second cylinder head. The second cylinder head has multiple connecting lugs circumferentially. The piston rod has a connecting threaded hole axially opened inward at the end outside the cylinder body. The connecting threaded hole is used to install a center, a flat plug, or an extension rod.

2. The hydraulic cylinder according to claim 1, characterized in that, The first cylinder head is provided with a handle for easy manual gripping or lifting.

3. A multi-purpose hydraulic tool capable of rapid assembly, comprising the hydraulic cylinder as described in any one of claims 1-2, characterized in that, Also includes: Multiple claws, one end of which is hinged to the corresponding connecting ear, and the other end of which is bent inward with a hook; The tip has one end connected to the threaded hole of the piston rod, and the other end is tapered.

4. A multi-purpose hydraulic tool capable of rapid assembly, comprising the hydraulic cylinder as described in any one of claims 1-2, characterized in that, Also includes: Multiple support rods, one end of which is connected to the corresponding connecting ear; The base plate is connected to the other end of the plurality of support rods; The plug has one end connected to the threaded hole of the piston rod, and the other end is a flat surface.

5. A multi-purpose hydraulic tool capable of rapid assembly, comprising the hydraulic cylinder according to any one of claims 1-2, characterized in that, Also includes: Multiple support rods, one end of which is connected to the corresponding connecting ear; A support ring is attached to the other end of one of the plurality of support rods; An extension rod, one end of which is connected to the threaded hole of the piston rod; The pin head has one end connected to the extension rod and the other end provided with an external thread.

Images