CJT type standard hydraulic cylinder with locking function

Abstract

The utility model discloses a CJT type standard hydraulic cylinder with a locking function. The CJT type standard hydraulic cylinder comprises a limiting mechanism and a hydraulic cylinder body installed in the middle of the limiting mechanism. A buffering mechanism is fixedly installed at the center position of the top face of the limiting mechanism, and one side of the buffering mechanism is fixedly connected to one side of the hydraulic cylinder body. The limiting mechanism comprises a hydraulic cylinder body, a piston rod is slidably connected to the interior of the hydraulic cylinder body, and supporting sleeves are fixedly connected to the left side and the right side of the hydraulic cylinder body; limiting frames are fixedly connected to the upper side and the lower side of one end of the supporting sleeve, and limiting columns are fixedly connected to one sides of the interiors of the limiting frames. By arranging the limiting mechanism, the situation that the hydraulic cylinder is damaged due to the fact that the piston rod retreats when the hydraulic cylinder is subjected to counter-acting force of a pushed object in the using process can be avoided, and by arranging the buffering mechanism, the hydraulic cylinder body can be protected and prevented from being damaged due to collision in the using process and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a CJT type standard hydraulic cylinder with a locking function. Background Art

[0002] The hydraulic cylinder is the actuator in the hydraulic transmission system. It is an energy conversion device that converts hydraulic energy into mechanical energy, realizes the reciprocating linear motion of the hydraulic rod, outputs speed and thrust, has a simple structure, and works reliably. It has been widely used in the hydraulic system of machine tools.

[0003] Publication No. CN214788318U discloses a hydraulic cylinder with a locking function. By providing a positioning plate and a positioning hole, the front cylinder cover can be installed in cooperation with the fixing bolts, so as to facilitate the installation of the hydraulic cylinder. By cooperating with the fixing rod provided between the front cylinder cover and the rear cylinder cover, the stability of the hydraulic cylinder itself during operation can be ensured. By providing an anti-collision plate, a connecting plate, a reinforcing rod and a positioning screw, the stability of the hydraulic cylinder after installation can be improved, so that the hydraulic cylinder has a locking function, and at the same time, the hydraulic cylinder itself is prevented from colliding with hard objects in the external environment, which has a protective effect on the hydraulic cylinder. However, the patent still has the following problems in actual use:

[0004] Although this hydraulic cylinder with a locking function is convenient for installing the front cylinder cover by providing a positioning plate and a positioning hole, which cooperates with the fixing bolts to facilitate the installation of the hydraulic cylinder, the hydraulic cylinder is easily affected by the reaction force of the pushed object when in use, causing the hydraulic rod to retreat, resulting in damage to the hydraulic cylinder and poor pushing effect.

[0005] A CJT type standard hydraulic cylinder with a locking function is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a CJT type standard hydraulic cylinder with a locking function to solve the problem raised in the above-mentioned background technology that a positioning plate and a positioning hole are provided to cooperate with the fixing bolts to facilitate the installation of the front cylinder cover, thereby facilitating the installation of the hydraulic cylinder, but the hydraulic cylinder is easily affected by the reaction force of the pushed object when in use, causing the hydraulic rod to retreat, resulting in damage to the hydraulic cylinder and poor pushing effect.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CJT type standard hydraulic cylinder with a locking function, comprising a limit mechanism, and a hydraulic cylinder body installed in the middle of the limit mechanism;

[0008] A buffer mechanism is fixedly installed at the center position of the top surface of the limiting mechanism, and one side of the buffer mechanism is fixedly connected to one side of the hydraulic cylinder body;

[0009] Also includes:

[0010] The limiting mechanism comprises a hydraulic cylinder body, a piston rod is slidably connected inside the hydraulic cylinder body, and support sleeves are fixedly connected to the left and right sides of the hydraulic cylinder body;

[0011] Wherein, both upper and lower sides of one end of the support sleeve are fixedly connected to the limit frame, and one side inside the limit frame is fixedly connected to the limit column;

[0012] A stopper is rotatably connected to the outer side of the limiting column, an elastic strip is fittedly connected to one side of the stopper, and one end of the elastic strip away from the stopper is fixedly connected to the limiting frame.

[0013] Preferably, one end of the stopper away from the elastic strip passes through the support sleeve and is closely connected to the top strip.

[0014] Preferably, one end of the top strip is fixedly connected to a first spring, an end of the first spring away from the top strip is fixedly connected to the support sleeve, the other end of the top strip is fixedly connected to a connecting rod, and an end of the connecting rod away from the top strip is fixedly connected to the piston rod.

[0015] Preferably, the buffer mechanism comprises a bottom plate, one side of the bottom plate is fixedly connected to the hydraulic cylinder body, a buffer groove is provided inside the bottom plate, and a guide rod is fixedly connected inside the buffer groove.

[0016] Preferably, a second spring is sleeved on the outer side of the guide rod, and upper and lower ends of the second spring are both fittedly connected with sleeves, and the interior of the sleeve is slidably connected to the guide rod.

[0017] Preferably, one end of the sleeve is fixedly connected to a first connecting block, one end of the first connecting block is rotatably connected to a connecting rod, one end of the connecting rod away from the first connecting block is rotatably connected to a second connecting block, and one end of the second connecting block is fixedly connected to a rubber plate.

[0018] Preferably, both upper and lower ends of the rubber plate are fixedly connected with cylinders, the outer sides of the two cylinders are provided with limit sleeves, one end of the limit sleeves is fixedly connected to the bottom plate, one end inside the limit sleeves is fixedly connected to a third spring, one end of the third spring is fit-connected to the cylinders, the other end inside the limit sleeves is fixedly connected to damping particles, and the inside of the damping particles is through-connected to the cylinders.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the CJT type standard hydraulic cylinder with locking function can prevent the hydraulic cylinder from being damaged by the reaction force of the pushed object during use by setting a limit mechanism, and can protect the hydraulic cylinder body by setting a buffer mechanism to prevent the hydraulic cylinder body from being damaged by impact during use. The specific contents are as follows:

[0020] 1. The setting of the limit mechanism can prevent the hydraulic cylinder from being damaged by the piston rod due to the reaction force of the pushed object when in use. The piston rod is used to drive the push bar to move outward inside the support sleeve. The position of the push bar can be limited by the cooperation between the stopper, the limit column, the elastic strip and the push bar, so as to prevent the piston rod from being damaged by the reaction force of the pushed object when in use, thereby improving the stability of the hydraulic cylinder body.

[0021] 2. By setting up a buffer mechanism, the hydraulic cylinder body can be protected to avoid damage to the hydraulic cylinder body due to impact during use. When the hydraulic cylinder body is impacted, the third spring is compressed to reduce a part of the impact force, and then the third spring causes the cylinder to rise and reset. The rising cylinder connects to the damping particles to absorb the rebound force, thereby further playing a buffering role. The sleeve is driven to move on the surface of the guide rod through the connecting rod, and the second spring is compressed to reduce a part of the impact force, thereby protecting the hydraulic cylinder body and reducing the damage caused by the impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front cross-section structure of the utility model;

[0023] Figure 2 For this utility model Figure 1 Schematic diagram of the internal cross-sectional structure of the middle support sleeve;

[0024] Figure 3 For this utility model Figure 2 Schematic diagram of the installation structure of the middle connecting rod from the side;

[0025] Figure 4 For this utility model Figure 2 A schematic diagram of a partially enlarged structure after the middle stopper rotates;

[0026] Figure 5 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0027] In the figure: 1. limit mechanism; 101. hydraulic cylinder body; 102. piston rod; 103. support sleeve; 104. limit frame; 105. limit column; 106. block; 107. elastic strip; 108. top strip; 109. first spring; 110. connecting rod; 2. buffer mechanism; 201. bottom plate; 202. buffer groove; 203. guide rod; 204. second spring; 205. sleeve; 206. first connecting block; 207. connecting rod; 208. second connecting block; 209. rubber sheet; 210. cylinder; 211. limit sleeve; 212. third spring; 213. damping particles. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a CJT type standard hydraulic cylinder with a locking function, comprising a limiting mechanism 1, and a hydraulic cylinder body 101 installed in the middle of the limiting mechanism 1; a buffer mechanism 2 is fixedly installed at the center position of the top surface of the limiting mechanism 1, and one side of the buffer mechanism 2 is fixedly connected to one side of the hydraulic cylinder body 101; the limiting mechanism 1 comprises a hydraulic cylinder body 101, a piston rod 102 is slidably connected inside the hydraulic cylinder body 101, and support sleeves 103 are fixedly connected to the left and right sides of the hydraulic cylinder body 101, and the top bar 108 is limited by setting the support sleeve 103;

[0030] The upper and lower sides of one end of the support sleeve 103 are fixedly connected to the limit frame 104, and one side inside the limit frame 104 is fixedly connected to the limit column 105. By setting the limit column 105, the stopper 106 can be limited;

[0031] The outer side of the limiting column 105 is rotatably connected with a stopper 106, and one side of the stopper 106 is fitted with an elastic strip 107. The end of the elastic strip 107 away from the stopper 106 is fixedly connected to the limiting frame 104. By providing the elastic strip 107, it can be ensured that the stopper 106 is always fitted and connected with the top strip 108 without being subjected to external force. When the piston rod 102 needs to be retracted, it is only necessary to rotate the stopper 106 to release the limit of the stopper 106 on the top strip 108 to retract it.

[0032] One end of the stopper 106 away from the elastic strip 107 penetrates the support sleeve 103 and is closely connected with a top strip 108, one end of the top strip 108 is fixedly connected with a first spring 109, one end of the first spring 109 away from the top strip 108 is fixedly connected to the support sleeve 103, and the other end of the top strip 108 is fixedly connected with a connecting rod 110, and one end of the connecting rod 110 away from the top strip 108 is fixedly connected to the piston rod 102. By using the cooperation among the stopper 106, the limiting column 105, the elastic strip 107 and the top strip 108, the position of the top strip 108 can be limited, so as to avoid the hydraulic cylinder body 101 from being subjected to the reaction force of the pushed object when in use, causing the piston rod 102 to retreat, thereby improving the stability of the hydraulic cylinder body 101;

[0033] The buffer mechanism 2 includes a bottom plate 201, one side of the bottom plate 201 is fixedly connected to the hydraulic cylinder body 101, a buffer groove 202 is provided inside the bottom plate 201, a guide rod 203 is fixedly connected inside the buffer groove 202, a second spring 204 is sleeved outside the guide rod 203, the upper and lower ends of the second spring 204 are both fitted and connected with a sleeve 205, the inside of the sleeve 205 is slidably connected to the guide rod 203, and the position of the sleeve 205 can be limited by setting the guide rod 203;

[0034] One end of the sleeve 205 is fixedly connected to a first connection block 206, one end of the first connection block 206 is rotatably connected to a connecting rod 207, one end of the connecting rod 207 away from the first connection block 206 is rotatably connected to a second connection block 208, one end of the second connection block 208 is fixedly connected to a rubber plate 209, and the rubber plate 209 can absorb part of the impact force;

[0035] The upper and lower ends of the rubber plate 209 are fixedly connected with cylinders 210, and the outer sides of the two cylinders 210 are sleeved with limiting sleeves 211, one end of the limiting sleeve 211 is fixedly connected to the bottom plate 201, and one end of the limiting sleeve 211 is fixedly connected to the third spring 212, and one end of the third spring 212 is fitted and connected to the cylinder 210, and the other end of the limiting sleeve 211 is fixedly connected to damping particles 213, and the inside of the damping particles 213 is connected through the cylinder 210. The third spring 212 is compressed to reduce a part of the impact force, and then the third spring 212 makes the cylinder 210 rise and reset, and the cylinder 210 rises and connects the damping particles 213 to absorb the rebound force, thereby further playing a buffering role.

[0036] Working principle: Before using this CJT standard hydraulic cylinder with locking function, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 5As shown, firstly, the piston rod 102 is used to drive the push bar 108 to move outward inside the support sleeve 103, and the position of the push bar 108 can be limited by the cooperation among the stopper 106, the limit column 105, the elastic strip 107 and the push bar 108, so as to prevent the hydraulic cylinder body 101 from being subjected to the reaction force of the pushed object when in use, causing the piston rod 102 to retreat, thereby improving the stability of the hydraulic cylinder body 101;

[0037] Secondly, when the hydraulic cylinder body 101 is hit from the side, the third spring 212 is compressed to reduce a portion of the impact force, and then the third spring 212 causes the cylinder 210 to rise and reset. The cylinder 210 rises and connects to the damping particles 213 to absorb the rebound force, thereby further playing a buffering role. The sleeve 205 is driven to move on the surface of the guide rod 203 through the connecting rod 207, and the second spring 204 is compressed to reduce a portion of the impact force, thereby protecting the hydraulic cylinder body 101 and reducing the damage caused by the impact.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A CJT type standard hydraulic cylinder with a locking function, comprising a limit mechanism (1), and a hydraulic cylinder body (101) installed in the middle of the limit mechanism (1); A buffer mechanism (2) is fixedly installed at the center position of the top surface of the limiting mechanism (1), and one side of the buffer mechanism (2) is fixedly connected to one side of the hydraulic cylinder body (101); It is characterized in that Also includes: The limiting mechanism (1) comprises a hydraulic cylinder body (101), a piston rod (102) is slidably connected inside the hydraulic cylinder body (101), and support sleeves (103) are fixedly connected to the left and right sides of the hydraulic cylinder body (101); The upper and lower sides of one end of the support sleeve (103) are fixedly connected to the limiting frame (104), and one side inside the limiting frame (104) is fixedly connected to the limiting column (105); The outer side of the limiting column (105) is rotatably connected to a stopper (106), one side of the stopper (106) is fittedly connected to an elastic strip (107), and one end of the elastic strip (107) away from the stopper (106) is fixedly connected to the limiting frame (104).

2. A CJT type standard hydraulic cylinder with locking function according to claim 1, characterized in that: One end of the stopper (106) away from the elastic strip (107) passes through the support sleeve (103) and is closely connected to the top strip (108).

3. A CJT type standard hydraulic cylinder with locking function according to claim 2, characterized in that: One end of the top strip (108) is fixedly connected to a first spring (109), and one end of the first spring (109) away from the top strip (108) is fixedly connected to the support sleeve (103); the other end of the top strip (108) is fixedly connected to a connecting rod (110), and one end of the connecting rod (110) away from the top strip (108) is fixedly connected to the piston rod (102).

4. The CJT type standard hydraulic cylinder with locking function according to claim 1, characterized in that: The buffer mechanism (2) comprises a bottom plate (201), one side of the bottom plate (201) is fixedly connected to the hydraulic cylinder body (101), a buffer groove (202) is provided inside the bottom plate (201), and a guide rod (203) is fixedly connected inside the buffer groove (202).

5. The CJT type standard hydraulic cylinder with locking function according to claim 4, characterized in that: A second spring (204) is sleeved on the outer side of the guide rod (203), and the upper and lower ends of the second spring (204) are both fitted and connected with sleeves (205), and the interior of the sleeve (205) is slidably connected to the guide rod (203).

6. The CJT type standard hydraulic cylinder with locking function according to claim 5, characterized in that: One end of the sleeve (205) is fixedly connected to a first connecting block (206), one end of the first connecting block (206) is rotatably connected to a connecting rod (207), one end of the connecting rod (207) away from the first connecting block (206) is rotatably connected to a second connecting block (208), and one end of the second connecting block (208) is fixedly connected to a rubber plate (209).

7. A CJT type standard hydraulic cylinder with locking function according to claim 6, characterized in that: The upper and lower ends of the rubber plate (209) are fixedly connected to cylinders (210), and the outer sides of the two cylinders (210) are sleeved with limiting sleeves (211), one end of the limiting sleeve (211) is fixedly connected to the bottom plate (201), one end of the inside of the limiting sleeve (211) is fixedly connected to a third spring (212), one end of the third spring (212) is fitted and connected to the cylinder (210), and the other end of the inside of the limiting sleeve (211) is fixedly connected to damping particles (213), and the inside of the damping particles (213) is connected through the cylinder (210).

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