Compact hydraulic oil cylinder with high temperature resistance

Abstract

The utility model relates to the technical field of hydraulic oil pumps, and discloses a compact hydraulic oil cylinder with high temperature resistance, which comprises a main body component, a piston rod component is mounted in the main body component, and a fixed support rod component is fixedly mounted at the top of the main body component. And a convenient connecting assembly is fixedly mounted at the tail end of the piston rod assembly. According to the butt joint device, the convenient connecting assembly is installed on the butt joint device, so that when the butt joint device is used and the butt joint device is connected, the convenient connecting work can be carried out through the arranged convenient connecting assembly, and the convenient working effect can be provided during follow-up replacement and disassembly work.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic oil pump, specifically is a compact hydraulic oil cylinder with high temperature resistance. BACKGROUND

[0002] In the industrial production field, the hydraulic oil cylinder is used as the hydraulic execution element for converting hydraulic energy into mechanical energy to realize linear reciprocating motion (or swing motion), and has the advantages of simple structure, reliable work, and no need to remove the speed reducer when realizing reciprocating motion, no transmission gap, smooth motion, etc. It is widely used in hydraulic systems of various machines. However, in high-temperature working conditions such as die casting mold, hot runner injection system, etc., the conventional hydraulic oil cylinder exposes many problems. When the hydraulic oil cylinder piston rod extends into the inner cavity of the die casting mold to contact the liquid metal, the high temperature is conducted to the hydraulic oil in the oil cylinder through the piston rod, causing the temperature of the hydraulic oil to rise sharply. This not only reduces the viscosity of the hydraulic oil and worsens the lubrication performance, aggravating the wear of the hydraulic components, affecting the service life of the hydraulic pump, valve and other key components, but also increases the internal leakage, reduces the working accuracy of the hydraulic system, and blocks the movement of the control valve core, which seriously affects the operation performance.

[0003] The application number CN201921039943.X discloses a compact hydraulic oil cylinder, which comprises a cylinder bottom provided at the right end of a cylinder barrel, a piston, a piston rod and a guide sleeve arranged in the cylinder barrel, a first oil port and a second oil port arranged on the cylinder barrel, the first oil port being located between the guide sleeve and the piston, the second oil port being located between the piston and the cylinder bottom, the guide sleeve being fitted on the cylinder barrel and having a mounting hole on the inner side, the piston rod being mounted on the piston and passing through the mounting hole, a boss being arranged on one end of the guide sleeve facing the piston, a groove being arranged on the piston and matched with the boss, the piston moving to make the boss matched into the groove to form a first oil gap between the piston and the guide sleeve, and the first oil port being communicated with the first oil gap for oil passage. Through the above-mentioned mode, the compact hydraulic oil cylinder can effectively avoid the over-turning of the oil port of the oil cylinder, has simple structure, is compact and has low processing cost. However, the above device still cannot provide a convenient connection mode during the connection and docking work of the device with other devices, which brings certain inconvenience during the connection and replacement work. UTILITY MODEL CONTENTS

[0004] The purpose of the present application is to provide a compact hydraulic oil cylinder with high temperature resistance, which solves the problem of inconvenience during the connection and docking work of the device with other devices.

[0005] To solve the above technical problems, the utility model is realized through the following technical schemes:

[0006] The utility model discloses a compact hydraulic cylinder with high temperature resistance, including main part assembly, the inside installation of main part assembly has piston rod assembly, and the top fixed mounting of main part assembly has fixed support rod subassembly, the fixed mounting of convenient connection subassembly has at the end of piston rod assembly,

[0007] Convenient connection subassembly includes connecting sleeve, and the front end of piston rod body is fixedly connected through the fixed nut ring, and the end fixed mounting of connecting sleeve has the limit half ring, the top of limit half ring is equipped with the limit slot, the inside limit of limit slot installs the rotary half ring, the rotary half ring is matched with limit half ring, and the fixed mounting of silica gel ring pad is all installed in the rotary half ring and limit half ring inner wall, and the bottom side end fixed mounting of rotary half ring has the assembling block, the both sides outer wall fixed mounting of assembling block has the elastic strip, and the end fixed mounting of elastic strip has the limit block.

[0008] Further, the main part assembly includes a cylinder body, a support seat is fixedly installed on the rear side of the cylinder body, and a rodless cavity is formed in the cylinder body.

[0009] Further, the fixed support rod subassembly includes a positioning rod, a support cross bar is installed on the top of the positioning rod, and the positioning rod is fixedly installed on the top of the support seat, and the other end of the support cross bar is fixedly installed on the top of the fixed seat.

[0010] Further, the piston rod assembly includes a piston rod body, a buffer sleeve is limitingly installed on the middle outer side of the piston rod body, and a piston is fixedly installed on the rear side of the piston rod body, the other end of the piston corresponds to a nut, and the piston is limitingly installed in the rodless cavity, and the nut is fixedly installed at the end of the piston rod body.

[0011] Further, assembly sliding grooves are formed on the bottom side outer ends of the limit half ring, a locking slot is formed at the end of the assembly sliding groove, and the locking slot is matched with the limit block.

[0012] Further, alloy steel is installed on the surface of the piston rod body, a support steel frame is installed on the surface of the alloy steel, and stainless steel is installed on the surface of the support steel frame.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model discloses a compact hydraulic cylinder with high temperature resistance has convenient connection assembly through installing on the device, can make when using this device, when the connecting work of docking device is carried out, can carry out convenient connection work through the convenient connection assembly of setting, and can provide convenient working effect when subsequent replacement and dismounting work.

[0015] (2) The utility model discloses a compact hydraulic cylinder with high temperature resistance has high temperature resistant material layer through installing on the piston rod body surface in the device, can make when using this device, during working, whether the heating caused by hydraulic device or the high temperature condition of working environment can be realized through the above high temperature resistant material layer device guarantee.

[0016] Of course, it is not necessary to achieve all the advantages described above while implementing any product of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be needed to use the drawings of the embodiment to introduce briefly, obviously, the drawings in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0018] Figure 1 It is the whole structure schematic diagram of the utility model discloses a compact hydraulic cylinder with high temperature resistance;

[0019] Figure 2 It is the sectional structure schematic diagram of the utility model discloses a compact hydraulic cylinder with high temperature resistance;

[0020] Figure 3 It is the convenient connection assembly structure schematic diagram of the utility model discloses a compact hydraulic cylinder with high temperature resistance;

[0021] Figure 4 It is the limiting half ring structure schematic diagram of the utility model discloses a compact hydraulic cylinder with high temperature resistance;

[0022] In the drawings, the component list represented by each sign is as follows:

[0023] As shown in the figure: 1, the main body assembly; 2, the fixed support rod assembly; 3, the piston rod assembly; 4, the convenient connection assembly; 101, the cylinder body; 102, the support seat; 103, the rodless cavity; 201, the positioning rod; 202, the support cross bar; 203, the fixed seat; 301, the piston rod body; 302, the buffer sleeve; 303, the piston; 304, the nut; 401, the connecting sleeve; 402, the fixed nut ring; 403, the limiting half ring; 404, the limiting notch; 405, the rotating half ring; 406, the silica gel ring pad; 407, the assembly block; 408, the elastic strip; 409, the limiting block; 3011, stainless steel; 3012, support steel frame; 3013, alloy steel; 4031, assembly sliding groove; 4032, locking notch. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figures 1-4 As shown in the figure, the utility model is a compact hydraulic cylinder with high temperature resistance, which comprises a main body assembly 1, a piston rod assembly 3 is installed inside the main body assembly 1, and a fixed support rod assembly 2 is fixedly installed at the top of the main body assembly 1, and a convenient connection assembly 4 is fixedly installed at the end of the piston rod assembly 3;

[0026] The convenient connection assembly 4 comprises a connecting sleeve 401, the connecting sleeve 401 is fixedly connected to the front end of the piston rod body 301 through a fixed nut ring 402, a limiting half ring 403 is fixedly installed at the end of the connecting sleeve 401, a limiting notch 404 is formed at the top of the limiting half ring 403, a rotating half ring 405 is limitingly installed inside the limiting notch 404, the rotating half ring 405 is matched with the limiting half ring 403, silica gel ring pads 406 are fixedly installed on the inner walls of the rotating half ring 405 and the limiting half ring 403, assembly blocks 407 are fixedly installed at the bottom end of the rotating half ring 405, elastic strips 408 are fixedly installed on the outer walls of the two sides of the assembly blocks 407, and limiting blocks 409 are fixedly installed at the ends of the elastic strips 408.

[0027] By installing the convenient connection assembly 4 on the device, when connecting the device, the convenient connection assembly 4 can be used for convenient connection, and the device can be conveniently replaced and disassembled.

[0028] The main body assembly 1 comprises a cylinder body 101, a support seat 102 is fixedly installed at the rear side of the cylinder body 101, and a rodless cavity 103 is formed in the interior of the cylinder body 101, the rodless cavity 103 in the interior of the cylinder body 101 in the main body assembly 1 provides a working space for hydraulic oil, when the hydraulic oil is injected into the rodless cavity 103, due to the incompressibility of the liquid, the pressure is uniformly transmitted to push the piston 303 to move.

[0029] The fixed support rod assembly 2 comprises a positioning rod 201, a support cross rod 202 is installed at the top of the positioning rod 201, and the positioning rod 201 is fixedly installed at the top of the support seat 102, the other end of the support cross rod 202 is fixedly installed at the top of a fixed seat 203, the positioning rod 201 of the fixed support rod assembly 2 is fixedly installed at the top of the support seat 102, and the support cross rod 202 connects the positioning rod 201 and the fixed seat 203, thereby stably supporting the main body assembly 1, enhancing the structural stability of the entire hydraulic oil cylinder, and ensuring that the hydraulic oil cylinder will not shake or displace during the working process.

[0030] The piston rod assembly 3 comprises a piston rod body 301, a buffer sleeve 302 is limitingly installed at the middle outer side of the piston rod body 301, a piston 303 is fixedly installed at the rear side of the piston rod body 301, a nut 304 is correspondingly installed at the other end of the piston 303, the piston 303 is limitingly installed in the interior of the rodless cavity 103, and the nut 304 is fixedly installed at the end of the piston rod body 301, the surface of the piston rod body 301 in the piston rod assembly 3 is provided with alloy steel 3013, a support steel frame 3012 and stainless steel 3011, these special materials endow the piston rod body 301 with the properties of high temperature resistance and high strength, thereby ensuring stable work in harsh working conditions. The piston 303 is driven by the hydraulic oil pressure in the rodless cavity 103 to make the piston rod body 301 do linear reciprocating motion, and the nut 304 is fixed at the end of the piston rod body 301, thereby ensuring the stable connection of the piston 303 and the piston rod body 301.

[0031] The bottom side outer end of the limiting half ring 403 is provided with an assembly sliding groove 4031 on both sides, the end of the assembly sliding groove 4031 is provided with a locking slot 4032, the locking slot 4032 is matched with the limiting block 409, the connecting sleeve 401 of the convenient connecting assembly 4 is installed at the front end of the piston rod body 301 through the fixing nut ring 402, the rotating half ring 405 is matched with the limiting half ring 403 through the limiting slot 404, the assembly sliding groove 4031, the locking slot 4032 and the elastic strip 408 and the limiting block 409, thereby achieving flexible opening and locking, facilitating connection with external equipment, and the silica gel ring pad 406 on the inner wall can prevent the connection part from loosening and leaking.

[0032] The surface of the piston rod body 301 is provided with alloy steel 3013, the surface of the alloy steel 3013 is provided with a support steel frame 3012, and the surface of the support steel frame 3012 is provided with stainless steel 3011.

[0033] The hydraulic cylinder is based on Pascal's principle, and the pressure is transmitted in the closed space by hydraulic oil to realize the conversion and transmission of force, thereby driving the piston rod assembly to move. The rodless cavity 103 inside the cylinder body 101 in the main body assembly 1 provides a working space for the hydraulic oil. When the hydraulic oil is injected into the rodless cavity 103, due to the incompressibility of the liquid, the pressure is uniformly transmitted to push the piston 303 to move. The piston rod body 301 in the piston rod assembly 3 is provided with alloy steel 3013, support steel frame 3012 and stainless steel 3011 on the surface, which endows it with high temperature resistance, high strength and other properties to ensure stable work in harsh working conditions. The piston 303 is affected by the hydraulic oil pressure in the rodless cavity 103, driving the piston rod body 301 to do linear reciprocating motion. The nut 304 is fixed at the end of the piston rod body 301, ensuring the stable connection of the piston 303 and the piston rod body 301. The positioning rod 201 of the fixed support rod assembly 2 is fixedly installed at the top of the support seat 102. The support cross rod 202 connects the positioning rod 201 and the fixed seat 203, which plays a role in stabilizing the main body assembly 1 and enhancing the structural stability of the entire hydraulic cylinder, so as to prevent shaking or displacement during work. The connecting sleeve 401 of the convenient connection assembly 4 is installed at the front end of the piston rod body 301 through the fixed nut ring 402. The rotating half ring 405 and the limiting half ring 403 are matched through the limiting slot 404, the assembly sliding groove 4031, the locking slot 4032, the elastic strip 408 and the limiting block 409, so as to realize flexible opening and locking, and facilitate connection with external equipment. At the same time, the silica gel ring pad 406 on the inner wall can prevent the connection part from loosening and leaking. During use, the main body assembly 1 of the hydraulic cylinder is installed and fixed at the working position through the support seat 102, and the fixed support rod assembly 2 is installed in place to ensure the stability of the main structure. Through the convenient connection assembly 4, the rotating half ring 405 is slid along the assembly sliding groove 4031 of the limiting half ring 403, so that the limiting block 409 is clamped into the locking slot 4032, and the connection preparation with the external equipment is completed. If necessary, the connection angle can be adjusted by rotating the half ring 405. Hydraulic oil is injected from the specific interface of the cylinder body 101 to the rodless cavity 103. As the hydraulic oil is injected, the pressure in the rodless cavity 103 gradually rises. When the pressure in the rodless cavity 103 reaches a certain value, the hydraulic oil pressure pushes the piston 303, and the piston 303 drives the piston rod body 301 to stretch out. The buffer sleeve 302 on the outside of the piston rod body 301 plays a role in buffering and shock absorption during movement, reducing the impact of movement. At the same time, the piston rod body 301 transmits power to the external equipment through the convenient connection assembly 4 to realize work. When it is necessary to retract the piston rod body 301, the hydraulic oil in the rodless cavity 103 is discharged through a specific oil way. Under the action of external load or other reset devices, the piston 303 drives the piston rod body 301 to retract, completing a working cycle. If the connected equipment needs to be replaced, the rotating half ring 405 can be unlocked and separated from the limiting half ring 403. After reconnecting the new equipment, the work can continue.

[0034] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A compact hydraulic cylinder with high temperature resistance, comprising a main body assembly (1), characterized in that: The inside of the main body assembly (1) is provided with a piston rod assembly (3), and the top of the main body assembly (1) is fixedly provided with a fixed support rod assembly (2), and the end of the piston rod assembly (3) is fixedly provided with a convenient connection assembly (4); The convenient connection assembly (4) comprises a connecting sleeve (401), the connecting sleeve (401) is fixedly connected to the front end of the piston rod body (301) through a fixed nut ring (402), and the end of the connecting sleeve (401) is fixedly provided with a limiting half ring (403), the top of the limiting half ring (403) is provided with a limiting notch (404), the inside of the limiting notch (404) is provided with a rotating half ring (405), the rotating half ring (405) is matched with the limiting half ring (403), and the inner walls of the rotating half ring (405) and the limiting half ring (403) are both fixedly provided with a silica gel ring pad (406), and the bottom end of the rotating half ring (405) is fixedly provided with an assembly block (407), the two side outer walls of the assembly block (407) are fixedly provided with elastic strips (408), and the ends of the elastic strips (408) are fixedly provided with limiting blocks (409).

2. The compact hydraulic cylinder with high temperature resistance according to claim 1, characterized in that: The main body assembly (1) comprises a cylinder body (101), and the rear side of the cylinder body (101) is fixedly provided with a support seat (102), and the inside of the cylinder body (101) is provided with a rodless cavity (103).

3. The compact hydraulic cylinder with high temperature resistance according to claim 1, characterized in that: The fixed support rod assembly (2) comprises a positioning rod (201), and the top of the positioning rod (201) is provided with a support cross rod (202), and the positioning rod (201) is fixedly provided on the top of the support seat (102), and the other end of the support cross rod (202) is fixedly provided on the top of a fixed seat (203).

4. The compact hydraulic cylinder with high temperature resistance according to claim 1, characterized in that: The piston rod assembly (3) comprises a piston rod body (301), and the middle outer side of the piston rod body (301) is provided with a buffer sleeve (302), and the rear side of the piston rod body (301) is fixedly provided with a piston (303), and the other end of the piston (303) is correspondingly provided with a nut (304), and the piston (303) is limitingly provided in the rodless cavity (103), and the nut (304) is fixedly provided at the end of the piston rod body (301).

5. The compact hydraulic cylinder with high temperature resistance according to claim 1, characterized in that: The bottom side outer end of the limiting half ring (403) is provided with an assembly sliding groove (4031), and the end of the assembly sliding groove (4031) is provided with a locking notch (4032), and the locking notch (4032) is matched with the limiting block (409).

6. The compact hydraulic cylinder with high temperature resistance according to claim 4, characterized in that: The surface of the piston rod body (301) is provided with an alloy steel (3013), the surface of the alloy steel (3013) is provided with a support steel frame (3012), and the surface of the support steel frame (3012) is provided with a stainless steel (3011).

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